JP6950081B2 - Electric vehicle - Google Patents

Description

The present invention relates to an electric vehicle.
The present application claims priority based on Japanese Patent Application No. 2018-071105 filed in Japan on April 2, 2018, the contents of which are incorporated herein by reference.

As a conventional electric vehicle, for example, Patent Document 1 discloses an electric vehicle in which the front vehicle body can swing in the roll direction (rotation direction around an axis facing the vehicle front-rear direction) with respect to the rear vehicle body. This electric vehicle has the following configuration. A trunk 16 is provided at the rear end of the vehicle body frame 1 (front vehicle body, swinging vehicle body). A fixing bracket 3 is provided at a position below the seat 15 of the vehicle body frame 1. A movable bracket 5 is rotatably supported on the fixed bracket 3 via a swing shaft 4.
A power unit P is supported on the movable bracket 5 via a ball joint 6 so as to swing up and down. A battery support frame 9 including an upper support frame 55 and a lower support frame 56 is welded to the movable bracket 5. A front tray 62 and a rear tray 65 are fixed to the upper support frame 55 and the lower support frame 56. A plurality of batteries 10 are mounted on the front tray 62 and the rear tray 65.

Japanese Patent No. 3189977

By the way, in the above-mentioned conventional technique, the battery 10 is covered with the battery support frame 9 (upper support frame 55, lower support frame 56, connecting frame 57, reinforcing plate 58, front support frame 59 and reinforcing pipes 60, 61). There is. Therefore, it is difficult to attach / detach the battery 10. Further, a trunk 16 provided at the rear end of the vehicle body frame 1 (front vehicle body, rocking vehicle body) is arranged above the battery 10 so as to be separated from each other. Therefore, when attaching or detaching the heavy battery 10, it is necessary to avoid the trunk 16. Therefore, there was room for improvement in terms of ease of attachment / detachment.

Therefore, an object of the present invention is to facilitate the attachment and detachment of a heavy battery in an electric vehicle.

As a means for solving the above problems, a first aspect of the present invention is an electric vehicle (1) including an electric motor (30) for traveling a vehicle and a battery (100) for supplying power to the electric motor (30). , 1', 201,301), which constitutes the rear part of the vehicle body and includes a rear frame (21A) extending upward of the rear wheels (4,4a, 4b). An electrical component storage unit (76) for detachably storing the battery (100) is configured, and a loading platform (75) is configured on the upper surface of the electrical component storage unit (76). The electrical component storage section (76) is provided with an opening / closing section (72, 74b, 78) for opening and closing the battery storage space, and the electrical component storage section (76) is inclined in an inclined direction (C41, C42) in which the battery (100) is inclined with respect to the vertical direction. ) Is provided, the battery (100) is composed of a pair of unit batteries (101, 102), and the pair of unit batteries (101, 102) is V. They are arranged in a character shape and are inserted and removed along the inclination directions (C41 and C42), respectively.
The eleventh aspect of the present invention (indicating an order for convenience of explanation; the same shall apply hereinafter) is a vehicle body front structure (3) and a vehicle body rear structure separated from the vehicle body front structure (3). 5), a rotating mechanism (50) that connects the vehicle body front structure (3) and the vehicle body rear structure (5) so as to be relatively swingable around an axis (C1) facing the vehicle front-rear direction, and a vehicle. An electric vehicle (1,1', 201,301) including an electric motor (30) for traveling and a battery (100) for supplying power to the electric motor (30), which constitutes the rear part of the vehicle body. A rear frame (21A) extending upward from the rear wheels (4,4a, 4b) is provided, and the rear frame (21A) is a removable electrical component storage unit (76) for detachably storing the battery (100). A loading platform (75) is formed on the upper surface of the electrical component storage section (76), and the electrical component storage section (76) is an opening / closing section (72, 74b, 78) for opening / closing the battery storage space. ), The electrical component storage unit (76) includes a battery case (100A) that supports the battery (100) so as to be inserted and removed in an inclined direction (C41, C42) inclined with respect to the vertical direction. The battery (100) can be inserted and removed from the front wall portion (71) of the rear vehicle body cover (70) that covers the vehicle body rear structure (5) at a position facing the battery (100) in the insertion / removal direction. The opening (77) is formed, and the opening (77) faces the gap (S1) between the vehicle body front structure (3) and the vehicle body rear structure (5).
In the twelfth aspect of the present invention, in the first or eleventh aspect, the electrical component storage unit (76) stores the charger (125) behind the battery (100).
In the thirteenth aspect of the present invention, in the eleventh aspect, the electrical component storage unit (76) can attach / detach the battery (100) from the front direction avoiding the upper surface of the loading platform (75). In any one of the first, eleventh to thirteenth aspects, the fourteenth aspect of the present invention is a swing arm that supports the rear wheels (4a, 4b) so as to be swingable up and down (4a, 4b). 40), a rear cushion (28) connecting the rear frame (21A) and the swing arm (40), and the rear cushion (28) viewed in the front-rear direction behind the battery (100). It is arranged so as to overlap the battery (100) or to overlap the battery (100) in a side view on the side of the battery (100).
A fifteenth aspect of the present invention is a swing arm (40) that supports the rear wheels (4a, 4b) so as to be swingable up and down in any one of the first, eleventh to fourteenth aspects. The swing arm (40) is provided with a motor case (43b) for accommodating the electric motor (30) at a position avoiding the rear wheels (4a, 4b) in a side view.
In the sixteenth aspect of the present invention, in the fifteenth aspect, the electric motor (30) has a swing axis (40a) rather than a central portion (40a) in the length direction (C2) of the swing arm (40). It is arranged on the 41) side, and the swing shaft (41) is provided adjacent to the motor case (43b).
In the seventeenth aspect of the present invention, in the fifteenth or sixteenth aspect, the electric motor (30) is arranged above the swing arm (40).
In the eighteenth aspect of the present invention, in any one of the first, eleventh to seventeenth aspects, the electrical component (130) housed in the electrical component storage unit (76) is the above. A power control unit (120) that controls an electric motor (30), a down regulator (126) that steps down the output voltage from the battery (100), and a battery (100), a power control unit (120), and a down regulator. It is provided with a junction box (123) for connecting (126).
In the nineteenth aspect of the present invention, in the eighteenth aspect, the battery (100) is provided with a battery connection terminal (101d, 102d) on one end side in the length direction, and the junction box (123) is provided. , In the length direction of the battery (100), the battery (100) is arranged closer to the battery connection terminal (101d, 102d) than the central portion (101e, 102e) in the length direction of the battery (100).

According to the first and eleventh aspects, the rear frame constituting the rear part of the vehicle body is provided with an electrical component storage section for mounting a heavy battery, a loading platform is provided on the upper surface of the electrical component storage section, and the electrical component is further provided. The parts storage section is provided with an opening / closing section that opens and closes the battery storage space. As a result, as compared with the case where the loading platform is provided above the electrical component storage portion, the operation of avoiding the loading platform is not required when attaching and detaching the heavy battery. Further, the electrical component storage unit opens and closes the battery storage space by the opening / closing unit using a part of the loading platform, so that the operation of avoiding the loading platform and attaching / detaching the battery becomes unnecessary in this respect as well. Therefore, it is possible to easily attach / detach a heavy battery. In addition, the upper surface of the electrical component storage unit can be used as a loading platform to make the electric vehicle compact.
In addition, compared to the case where the battery is inserted and removed in the vertical direction, it is easier to lift the heavy battery and it is possible to receive at least a part of the battery weight in the battery case, so that the battery can be easily attached and detached. Can be.
According to the twelfth aspect, by arranging the charger behind the battery, the charger is arranged near the rear end of the entire vehicle body, so that access to the charger becomes easy. Since the battery, which is a high-voltage component and is a heavy object, is relatively arranged closer to the center of the front and rear of the entire vehicle body, the influence of disturbance from the rear can be suppressed and contribute to the concentration of mass.
According to the thirteenth aspect, since the battery can be attached and detached while avoiding the upper surface of the loading platform, the battery can be attached and detached even when the cargo is loaded on the loading platform, and the convenience can be improved.
According to the fourteenth aspect, the rear cushion of the rear wheel suspension device can be used to suppress the influence of the disturbance from the rear or the side on the battery and improve the protection property of the battery.
According to the fifteenth aspect, the access to the electric motor from the side of the vehicle is easier and the electricity is different from the case where the electric motor is arranged so as to overlap the rear wheels in the side view like the in-wheel motor. Since the motor case for accommodating the motor is exposed on the side of the vehicle, it is possible to improve the assembleability and maintainability of the electric motor.
According to the sixteenth aspect, the operability of the swing arm can be improved by providing the electric motor, which is a heavy object, at a position close to the swing axis in the swing arm.
According to the seventeenth aspect, by providing the electric motor on the upper part of the swing arm, it is possible to suppress disturbance and water reception from the road surface side with respect to the electric motor.
According to the eighteenth aspect, by centrally arranging the electrical components on the rear frame, the harness length between the electrical components is shortened, and since the components do not move relative to each other, the wiring is bent or worn due to interference. Etc. can be suppressed.
According to the nineteenth aspect, by arranging the battery and the junction box close to each other, the wiring between the battery and the junction box can be further shortened.

It is a left side view of the electric vehicle in the 1st Embodiment of this invention. It is a left side view of the rear part of the vehicle body of the electric vehicle. It is a rear view of the said electric vehicle. It is a perspective view of the rear body of the electric vehicle. It is a perspective view of the state in which the rear body cover is removed from the rear body. It is a block diagram of the main electrical component of the electric vehicle. It is a top view which includes a partial cross section of the rotation mechanism of the electric vehicle. FIG. 7 is a cross-sectional view taken along the line XX of FIG. It is a left side view corresponding to FIG. 2 which shows the modification of 1st Embodiment. It is a left side view of the electric vehicle in the 2nd Embodiment of this invention. It is a left side view of the rear part of the vehicle body of the electric vehicle of the second embodiment. It is a right side view of the rear part of the vehicle body of the electric vehicle of the second embodiment. It is a rear view of the electric vehicle of the second embodiment. It is a perspective view of the rear body of the electric vehicle of the second embodiment. It is a perspective view of the state which removed the rear body cover from the rear body of the 2nd Embodiment. It is a left side view of the electric vehicle in the 3rd Embodiment of this invention. It is a left side view of the rear part of the vehicle body of the electric vehicle of the third embodiment. It is a rear view of the electric vehicle of the third embodiment. It is a perspective view of the rear body of the electric vehicle of the third embodiment. It is a perspective view of the state which removed the rear body cover from the rear body of the 3rd Embodiment. It is a front view of the rear part of the vehicle body when the front vehicle body of the electric vehicle of the third embodiment is in an upright state. It is a front view of the rear part of the vehicle body when the front vehicle body of the electric vehicle of the third embodiment is in a swinging state. It is a left side view corresponding to FIG. 1 which shows the modification of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Unless otherwise specified, the directions such as front, rear, left, and right in the following description are the same as the directions in the vehicle described below. Further, in the appropriate place in the figure used in the following description, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper part of the vehicle are shown.

First, the first embodiment of the present invention will be described with reference to FIGS. 1 to 9.
(Whole vehicle)
As shown in FIGS. 1 to 3, in the electric vehicle 1 of the present embodiment, one front wheel 2 which is a steering wheel is supported by a front vehicle body (vehicle body front structure) 3. The electric vehicle 1 supports a pair of left and right rear wheels 4a and 4b, which are driving wheels, on a rear vehicle body (vehicle body rear structure) 5. The electric vehicle 1 swings left and right (rolling motion) the front vehicle body (swinging side vehicle body) 3 on which the occupant rides with respect to the rear vehicle body (non-swinging side vehicle body) 5 with the left and right rear wheels 4a and 4b grounded. Make it possible. The electric vehicle 1 is configured as a swing-type electric tricycle.

The front vehicle body 3 includes a bar handle 6 for steering the front wheels and a seat 7 for seating an occupant. The front vehicle body 3 has a space 8 straddling between the bar handle 6 and the seat 7. The front vehicle body 3 is provided with a low floor 9 below the straddling space 8.
The front vehicle body 3 and the rear vehicle body 5 are connected to each other via a rotating mechanism (rolling joint) 50. In the figure, reference numeral C1 indicates a rotation axis extending in the vehicle front-rear direction in the rotation mechanism 50, line CL1 indicates a left-right center line of the front vehicle body 3, and line CL2 indicates a left-right center line of the rear vehicle body 5.

(Front body)
With reference to FIG. 1, the front vehicle body 3 includes a front vehicle body frame 11. The front body frame 11 includes a single front frame 14 that extends downward from the rear side of the head pipe 12 and then curves rearward, and a pair of left and right front frame 14 that branches left and right from both sides of the curved portion of the front frame 14 and extends rearward. The lower frame 15 and a pair of left and right rear frames 16 extending obliquely rearward and upwardly from the rear ends of the left and right lower frames 15 are provided. The rear end of the front frame 14 is coupled to the middle of the lower cross frame 17 that extends between the rear of the left and right lower frames 15. For example, a bottom link type front wheel suspension device 13 is steerably supported on the head pipe 12. The front wheel 2 is supported at the lower end of the front wheel suspension device 13.

Behind the lower cross frame 17, a rear lower cross frame 18 extending between the lower parts of the left and right rear frames 16 is arranged. The front structure 51 of the rotating mechanism 50 is fixedly supported on the lower cross frame 17 and the rear lower cross frame 18.
When the electric vehicle 1 is turning, the front vehicle body 3 swings (banks) in the turning direction with respect to the vehicle body 5 after the left and right rear wheels 4a and 4b are grounded on the road surface G. .. As a result, the front vehicle body 3 causes the front wheels 2, which are steering wheels, to have a steering angle.

The entire front vehicle body 3 including the front vehicle body frame 11 is covered with the front vehicle body cover 60. The front body cover 60 includes a front cover 61 that covers the periphery of the head pipe 12 and the front frame 14 from the front, an inner cover 62 that covers the periphery of the head pipe 12 and the front frame 14 from the rear, and a lower end portion of the inner cover 62. A floor board 63 connected to the rear of the floor board 63, a rear inclined board 64 inclined diagonally upward and backward behind the floor board 63, and a seat under cover 65 extending to the lower part of the rising seat 7 at the left and right inner portions of the rear inclined board 64. And have. Reference numeral 61a in the figure indicates a pair of left and right rearview mirrors supported on both sides of the upper end portion of the front cover 61.

The floor board 63 constitutes a low floor floor 9 together with the left and right lower frames 15 and the like. The rear inclined board 64, together with the left and right rear frames 16 and the like, constitutes a rear inclined portion 9a connected to the rear of the low floor floor 9. Behind the seat 7, a backrest 66 that forms a substantially vertical front surface stands up. The backrest 66 is supported by the upper ends of the left and right rear frames 16. The rear surface side of the backrest 66 constitutes a loading platform front wall portion 66b that stands above the front end portion of the loading platform 75 in the rear vehicle body 5. A pair of left and right columns 66a extend above the backrest 66. A windscreen 67 extends above the front cover 61. A roof 68 extending rearwardly is connected to the upper end of the windscreen 67. The rear end portion of the roof 68 is supported by the upper end portions of the left and right columns 66a.

(Rear body)
As shown in FIGS. 1 to 3, the rear vehicle body 5 includes a rear vehicle body frame 21 that is independent of the front vehicle body frame 11. The rear body frame 21 includes a second rear frame 22 extending diagonally rearward and upward from the upper part of the rotating mechanism 50, a rear upper frame 23 extending rearwardly curved from the upper end portion of the second rear frame 22, and a rear upper frame 23. A rear upper cross frame 24 that is coupled to the rear portion and extends in the left-right direction, an intermediate upper cross frame 24a that is coupled to the front portion of the rear upper frame 23 and extends in the left-right direction, and a lower end portion of the second rear frame 22. A second rear lower cross frame 25 extending in the left-right direction, a pair of left and right rear lower side frames 26 extending rearward from both the left and right sides of the second rear lower cross frame 25, and diagonally from the rear end of the left and right rear lower side frames 26. It includes a pair of left and right rear side frames 27 that are curved and extend rearward and upward. The left and right rear side frames 27 are coupled to the left and right sides of the rear upper cross frame 24. The second rear frame 22 is substantially parallel to the rear frame 16 in a side view.

The second rear frame 22 and the rear upper frame 23 are integrally formed with each other, for example. The second rear frame 22 and the rear upper frame 23 are formed of, for example, a single metal member arranged at the center of the left and right sides of the rear vehicle body 5. The rear body frame 21 (particularly the second rear frame 22, the rear upper frame 23, the rear upper cross frame 24 and the intermediate upper cross frame 24a) constitutes the rear frame 21A. The rear frame 21A extends from the rear structure 52 (non-rotating region) of the rotating mechanism 50 toward the upper side of the rear wheels 4a and 4b in a side view.

The rear structure 52 of the rotating mechanism 50 is fixedly supported on the lower portion of the second rear frame 22. At the rear end of the rear structure 52, the front end of the swing unit 40 is supported so as to be swingable up and down via a swing shaft (pivot shaft) 41 along (extending) in the left-right direction. For example, the lower ends of the pair of left and right rear cushions 28 are connected to the outer cylinder 42a of the rear wheel axle 42 provided at the rear end of the swing unit 40 (see FIG. 3). The upper ends of the left and right rear cushions 28 are connected to the left and right sides of the rear upper cross frame 24, respectively. The rear end portion of the swing unit 40 is connected to and supported by the upper rear portion of the rear body frame 21 via the left and right rear cushions 28. The rear vehicle body 5 includes a swing unit 40, left and right rear cushions 28, and a rear wheel suspension device (rear suspension) 29 including a rear vehicle body frame 21.

With reference to FIG. 4, the entire rear vehicle body 5 including the rear vehicle body frame 21 is covered with the rear vehicle body cover 70. The rear body cover 70 includes a front wall portion 71 forming an inclined front surface substantially parallel to the second rear frame 22, an upper wall portion 72 extending substantially horizontally from the upper end portion of the front wall portion 71 to the rear, and an upper wall portion 72. A rear wall portion 73 extending downward from the rear end portion and a pair of left and right side wall portions 74 extending between the front wall portion 71 and the rear wall portion 73 are provided. Rear fenders 74a covering the upper parts of the left and right rear wheels 4a and 4b are formed on the left and right side wall portions 74. The upper wall portion 72, together with the rear upper frame 23, the rear upper cross frame 24, the intermediate upper cross frame 24a, and the like, constitutes a loading platform 75 on the upper surface of the rear vehicle body 5 (which is also the upper surface of the storage portion 76). The front wall portion 71 is substantially parallel to the rear inclined portion 9a of the front vehicle body 3. The front wall portion 71 is arranged with a gap S1 (see FIG. 2) between the rear inclined portion 9a and the rear inclined portion 9a so as not to interfere with the rear inclined portion 9a when the front and rear vehicle bodies 3 and 5 swing relative to each other. For convenience of illustration, FIGS. 1 to 3 show only a part of the rear body cover 70.

(Swing unit)
With reference to FIGS. 1 to 3, the swing unit 40 is arranged between the left and right rear wheels 4a and 4b. The swing unit 40 is arranged so as to extend from the swing shaft 41 to the rear wheel axle 42 in a side view. The swing unit 40 is arranged so that the length direction is directed to the front-rear direction. The swing unit 40 extends along the axis C2 connecting the swing shaft 41 and the rear wheel axle 42 in a side view. Hereinafter, the direction along the axis C2 is referred to as the length direction (arm length direction) C2 of the swing unit 40.

The swing unit 40 is configured as a power unit including an electric motor 30 which is a drive source of the electric vehicle 1. The swing unit 40 includes a unit case 43 as a structure (swing arm) that supports the left and right rear wheels 4a and 4b so as to be able to swing up and down, an electric motor 30 housed in the front portion of the unit case 43, and a unit case 43. A differential mechanism 44 housed in the rear portion and a drive shaft 45 extending from the drive shaft of the electric motor 30 to the input portion of the differential mechanism 44 are provided. The unit case 43 includes a single arm portion 43a extending along the axis C2 between the swing shaft 41 and the rear wheel axle 42 in a side view. The arm portion 43a includes a motor case 43b that bulges up and down with respect to other portions at a portion that accommodates the electric motor 30.

A pair of left and right rear wheel axles (output shafts) 42 that support the left and right rear wheels 4a and 4b respectively extend on both left and right sides in the rear portion of the swing unit 40. The driving force of the single electric motor 30 is transmitted to the differential mechanism 44 via the drive shaft 45. The driving force transmitted to the differential mechanism 44 is appropriately distributed from the differential mechanism 44 to the left and right rear wheel axles 42 to drive the left and right rear wheels 4a and 4b. Outer cylinders 42a for accommodating the left and right rear wheel axles 42 extend on both the left and right sides of the differential mechanism 44.

(Rotating mechanism)
With reference to FIGS. 2, 7, and 8, the rotating mechanism 50 includes a front structure 51 and a rear structure 52 that can rotate relative to each other. A so-called Knighthard mechanism 55 is formed between the front structure 51 and the rear structure 52. The front structure 51 includes a front casing 51a that is fixedly supported by the front body frame 11. The rear structure 52 includes a rear support shaft 52a that is fixedly supported by the rear body frame 21. The front portion of the rear support shaft 52a is inserted into the front casing 51a along the axis C1 and is rotatably supported around the axis C1.

A pivot bracket 52b is integrally connected to the rear portion of the rear support shaft 52a that projects rearward from the front casing 51a. The pivot bracket 52b supports the front end portion of the swing unit 40 so as to be swingable up and down. The front end of the unit case 43 of the swing unit 40 is connected to the pivot bracket 52b so as to be swingable up and down via a swing shaft 41 along the left-right direction. The front lower end portion of the rear body frame 21 is integrally connected to the rear support shaft 52a. The rear body frame 21 and thus the rear body frame 5 and the front body frame 11 and thus the front body 3 are connected so as to be relatively swingable at the center of the axis C1.

With reference to FIGS. 7 and 8, a Knighthard cam 56 is integrally rotatably provided at a front portion of the rear support shaft 52a inserted into the front casing 51a. The Knighthard cam 56 has a substantially rhombus shape having concave four sides when viewed in the axial direction. A case portion 57 having a substantially rectangular shape in the axial direction is provided at a portion of the front casing 51a where the Knighthard cam 56 is inserted. For example, cylindrical night hull travers 58 are arranged at the four corners of the space in the case portion 57 in the axial direction. Each night hull traverse 58 is arranged so as to be substantially parallel to the case portion 57 in the axial direction. In each of the night hull travers 58, in the upright state A of the front vehicle body 3 (the state in which the left and right center lines CL1 and CL2 of the front and rear vehicle bodies 3 and 5 coincide with each other in the front-rear direction view, see FIG. 3), the night hart cam 56 is viewed in the axial direction. The four sides are in contact.

The rotation mechanism 50 includes a Knighthardt mechanism (damper mechanism) 55 that applies a non-linear restoring force (damping force) to the relative rotation of the front casing 51a and the rear support shaft 52a. Each night hull travers 58 exerts the following actions when the front vehicle body 3 swings from the upright state A and the front casing 51a and the rear support shaft 52a rotate relative to each other. Each Knighthal travers 58 is compressed by the Knighthard cams 56 at the four corners of the case portion 57 to generate a non-linear restoring force against the swing of the front vehicle body 3.

(Parking lock device)
With reference to FIGS. 1, 2, and 7, the electric vehicle 1 includes a parking lock device 90. The parking lock device 90 operates the swing lock mechanism 93 and the parking brake (parking lock mechanism 99) to regulate the swing of the front vehicle body 3 and the rotation of the rear wheels 4a and 4b.
The parking lock device 90 is provided on, for example, a parking lever 91 (see FIG. 1) arranged near the center of the left and right sides of the bar handle 6, a parking cable 92 extending from the parking lever 91 (see FIG. 7), and a rotating mechanism 50. It is provided with a swing lock mechanism 93 (see FIG. 7) and a parking lock mechanism 99 (see FIG. 2) provided on the swing unit 40. The parking cable 92 is engaged with each of the swing lock mechanism 93 and the parking lock mechanism 99. In the parking lock device 90, when the parking lever 91 is operated, the swing lock mechanism 93 and the parking lock mechanism 99 are operated via the parking cable 92 to lock the swing and forward / backward movement of the vehicle body.

The parking lever 91 can be operated toward either the locked position or the unlocked position. At the locked position, the swing of the front vehicle body 3 and the rotation of the rear wheels 4a and 4b are restricted. At the unlocked position, the restrictions on the swing of the front vehicle body 3 and the rotation of the rear wheels 4a and 4b are released. The parking lever 91 can be operated when the main switch (not shown) of the electric vehicle 1 is on. If the main switch is turned off while the parking lever 91 is operated to the locked position, the parking lever 91 is mechanically locked, for example, and cannot be operated to the unlocked position. The parking lever 91 can be locked at the locked position. The parking lock device 90 can be locked in a locked state in which the swing of the front vehicle body 3 and the rotation of the rear wheels 4a and 4b are restricted.

The base end of the inner cable 92a in the parking cable 92 is engaged with the working end of the parking lever 91. The parking cable 92 extends rearward from the working end of the parking lever 91 through the lower part of the vehicle body, and the tip end side reaches the side of the rotating mechanism 50. On the side of the rotating mechanism 50, the inner cable 92a is engaged with the input end of the rocking lock mechanism 93.

The parking cable 92 extends further rearward from the side of the rotating mechanism 50, and the tip end side reaches the side of the swing unit 40. On the side of the swing unit 40, the inner cable 92a is engaged with the input end of the parking lock mechanism 99. When the parking lever 91 is operated to the lock position, the inner cable 92a of the parking cable 92 is pulled to lock the swing lock mechanism 93 and lock the parking lock mechanism 99.

With reference to FIG. 7, in the rotation mechanism 50, an L-shaped space in a plan view is formed between the front casing 51a and the rear support shaft 52a. This space is formed so as to extend from the side of the front portion of the rear support shaft 52a to the front of the front end portion. A swing lock mechanism 93 is arranged in this space. On the side of the rear support shaft 52a, a front outer holding portion 51b is provided on the front wall of the front casing 51a. The front outer cable 51b holds the rear end of the front outer cable 92b on the parking lever 91 side of the parking cable 92. On the side of the rear support shaft 52a, a rear outer holding portion 51c is provided on the rear wall of the front casing 51a. The rear outer cable 51c holds the front end of the rear outer cable 92c on the parking lock mechanism 99 side of the parking cable 92. An intermediate portion of the inner cable 92a is inserted into the front casing 51a between the front and rear outer holding portions 51b and 51c.

In the front casing 51a, one end of the swing arm 94 is engaged with the inner cable 92a. The intermediate portion of the swing arm 94 in the length direction is swingably supported by a swing shaft 94a supported by the front casing 51a. The tip of the stopper pole 96 is connected to the other end of the swing arm 94 via a chain link 95. The base end portion of the stopper pole 96 is swingably supported by a swing shaft 96a supported by the front casing 51a. The stopper pole 96 extends the tip end side to the front of the front end portion of the rear support shaft 52a. A claw portion 96b facing the front end portion of the rear support shaft 52a is projected from the tip end portion of the stopper pole 96. A stopper plate 97 is integrally rotatably provided at the front end of the rear support shaft 52a. The stopper plate 97 is provided in a fan shape centered on the axis C1 in the axial direction. On the outer peripheral portion of the stopper plate 97, a plurality of groove portions 97b to which the claw portion 96b of the stopper pole 96 can be engaged are formed so as to be arranged in the circumferential direction about the axis C1.

In such a configuration, when the inner cable 92a is pulled by the operation of the parking lever 91, the swing arm 94 of the swing lock mechanism 93 is activated, and the claw portion 96b of the stopper pole 96 is set to any of the plurality of groove portions 97b of the stopper plate 97. Engage in the crab. As a result, the swing lock mechanism 93 is locked at the angle around the axis C1 of the groove portion 97b with which the claw portion 96b is engaged, and the rotation of the rear support shaft 52a with respect to the front casing 51a is restricted. That is, the rotation of the rear support shaft 52a with respect to the front casing 51a is regulated at an arbitrary angle within the angle range in which the plurality of groove portions 97b of the stopper plate 97 are formed. Therefore, the swing of the front vehicle body 3 with respect to the rear vehicle body 5 can be locked at an arbitrary swing angle in the angle range.

The inner cable 92a extends to the rear of the front casing 51a together with the rear outer cable 92c, and reaches the rear side of the swing unit 40. Similar to the swing lock mechanism 93, a parking lock mechanism 99 using a stopper pole and a stopper plate is configured in the gear case forming the rear portion of the swing unit 40. The inner cable 92a is engaged with the input end of the parking lock mechanism 99.
In such a configuration, when the inner cable 92a is pulled, the parking lock mechanism 99 is locked, and the rotation of the rear wheel axle 42 is restricted. As a result, the parking brake is activated in which the rotation of the rear wheels 4a and 4b is restricted, and the front-rear movement of the electric vehicle 1 is restricted.

(Electric motor)
With reference to FIG. 6, the electric motor 30 is driven by the electric power of the battery 100. The electric motor 30 is driven at a variable speed by, for example, VVVF (variable voltage variable frequency) control. The electric motor 30 is speed-shifted so as to have a continuously variable transmission, but the speed is not limited to this. For example, the electric motor 30 may be speed-shift controlled so as to have a stepped transmission.

With reference to FIG. 2, the electric motor 30 is arranged in a so-called vertical position with the drive shafts oriented in the front-rear direction of the vehicle. The middle line C3 in the figure shows the drive axis of the electric motor 30. The electric motor 30 (and the motor case 43b) is arranged at a position avoiding the rear wheels 4a and 4b in a side view. The motor case 43b is exposed to the side of the vehicle. The electric motor 30 (and the motor case 43b) is arranged so as to be offset to the front of the vehicle with respect to the rear wheels 4a and 4b.
The entire electric motor 30 (and the motor case 43b) is arranged in front of the outer circumferences of the rear wheels 4a and 4b in a side view. The electric motor 30 (and the motor case 43b) is arranged in front of the central portion 40a of the swing unit 40 in the length direction C2 (on the swing shaft 41 side). The electric motor 30 is arranged at a position adjacent to the swing shaft (pivot shaft) 41. The swing shaft 41 is provided adjacent to the front of the motor case 43b. As a result, the swing radius from the swing shaft 41 to the heavy electric motor 30 is shortened, and the operability of the swing unit 40 (road surface followability and rough road running performance of the rear suspension 29) is improved.

The electric motor 30 aligns the drive axis C3 with the axis C2 in a side view. The electric motor 30 is arranged at the same height as the arm portion 43a of the swing unit 40. As a result, the electric motor 30 (and the motor case 43b) is prevented from protruding above and below the swing unit 40, which contributes to the reduction of the swing space of the swing unit 40. Further, as compared with the case where the electric motor 30 (and the motor case 43b) projects below the swing unit 40, the ground clearance of the electric motor 30 (and the motor case 43b) is secured, and the disturbance from below the vehicle (road surface side) is secured. It suppresses the influence of the road surface and also suppresses the water ingress from the road surface side.

A battery 100 is arranged above the swing unit 40. The battery 100 is composed of a pair of left and right unit batteries 101 and 102 (hereinafter, may be simply referred to as a battery or a left and right battery). The left and right batteries 101 and 102 are arranged in a V shape when viewed in the front-rear direction. The lower surfaces of the left and right batteries 101 and 102 are arranged in an inverted V shape when viewed in the front-rear direction. Below the left and right batteries 101 and 102, a chevron-shaped space is formed in the front-rear direction. Therefore, the battery 100 can easily secure a clearance between the battery 100 and the swing unit 40 located at the center of the left and right sides of the vehicle body.

As shown in FIG. 9, the electric motor 30 (and the motor case 43b) is arranged so as to be displaced above the swing unit 40 (the drive axis C3 is offset above the axis C2 in a side view). You may. The electric motor 30 (and the motor case 43b) may be arranged above the arm portion 43a of the swing unit 40. In this case, the ground clearance of the electric motor 30 (and the motor case 43b) is further secured, and disturbance and water exposure from the road surface side are further suppressed.

Since the electric motor 30 is arranged so as to avoid the rear wheels 4a and 4b in a side view, it has the following functions. Compared with the arrangement in which the electric motor 30 overlaps the rear wheels 4a and 4b in a side view like the in-wheel motor, the electric motor 30 can be easily accessed from the side of the vehicle, and the assembling property and maintainability are improved.
When the electric vehicle 1 includes the left and right rear wheels 4a and 4b, the in-wheel motor requires the electric motors 30 for the left and right rear wheels 4a and 4b, respectively. In the present embodiment, a single electric motor 30 is provided at a position avoiding the rear wheels 4a and 4b in a side view, and the left and right rear wheels 4a and 4b are driven by the electric motor 30 to simplify the rear wheel drive system. It contributes to the conversion. The electric motor 30 may be arranged behind the rear wheels 4a and 4b as long as it is arranged so as to avoid the rear wheels 4a and 4b in the side view. Further, in the present embodiment, at least a part of the electric motor 30 may be arranged so as to overlap the rear wheels 4a and 4b in a side view (at least a part of the electric motor 30 is arranged between the left and right rear wheels 4a and 4b), or left and right. It does not exclude the adoption of in-wheel motors for the rear wheels 4a and 4b.

(Electrical parts)
With reference to FIGS. 2 and 5, a battery 100, which is a power source for the electric motor 30, is arranged below the loading platform 75. A junction box 123, a PCU (Power Control Unit) 120, a DC-DC converter 126, and a charger (charger) 125 are arranged below the loading platform 75 as electrical components 130 related to the electric motor 30 and the battery 100. The rear vehicle body 5 supports electrical components 130 such as the battery 100, the junction box 123, the PCU 120, the DC-DC converter 126, and the charger 125 on the rear vehicle body frame 21 which is on the spring of the rear suspension 29. The rear vehicle body 5 utilizes the upper surface of the storage portion 76 for storing the electrical component 130 as a large loading platform 75. Hereinafter, the storage unit 76 may be referred to as a battery storage unit 76 or an electrical component storage unit 76.
Various arrangements of the electrical components 130 can be considered, but in the present embodiment, the arrangements shown in FIGS. 1 to 5 will be described.

(Loading platform)
With reference to FIG. 2, the upper wall portion 72 (loading platform plate member) constituting the loading platform 75 in the rear vehicle body cover 70 is supported by, for example, the rear end portion of the rear upper frame 23 (upper rear end portion of the rear vehicle body frame 21). ing. The upper wall portion 72 is rotatably supported by the rear end portion of the rear upper frame 23 around a hinge shaft 75a along the left-right direction. The rear end portion of the upper wall portion 72 is supported by the rear end portion of the rear upper frame 23 via the loading platform hinge 75b having the hinge shaft 75a. The upper wall portion 72 rotates about the hinge shaft 75a from a used state (indicated by a solid line in the figure) arranged substantially horizontally, and the front portion is moved upward to stand up. At this time, the upper wall portion 72 is in an upright state (indicated by a chain line in the figure) by moving the front portion upward. When the upper wall portion 72 is in use, the upper surface of the storage portion 76 is closed. When the upper wall portion 72 is in the upright state, the upper surface of the storage portion 76 is opened. The upper wall portion 72 is also an opening / closing portion that can open and close the upper surface of the storage portion 76 (including the battery storage space).

The upper wall portion 72 is not limited to a configuration that opens and closes around a hinge shaft 75a arranged in the rear end side of the rear vehicle body 5 along the left-right direction. For example, as shown in FIG. 9, the upper wall portion 72 may be configured to open and close via a hinge shaft 75a and a loading platform hinge 75b arranged on the front end side of the rear vehicle body 5. Further, for example, the upper wall portion 72 may be configured to open and close around a hinge shaft (not shown) arranged on the left and right end sides of the rear vehicle body 5 along the front-rear direction. For example, the upper wall portion 72 may have a structure that is removable with respect to the rear body frame 21. For example, the upper wall portion 72 may be configured to partially open and close. The upper wall portion 72 is arranged as follows when the storage portion 76 is opened. The upper wall portion 72 is arranged so as to avoid a passing region (a region in the detaching direction of the batteries 101 and 102) when the batteries 101 and 102 are inserted and removed along the inclination directions C41 and C42 described later.

(Battery)
With reference to FIGS. 2 and 3, the battery 100 is mounted below the loading platform 75. The battery 100 is composed of a plurality of (for example, two left and right) unit batteries 101 and 102. The plurality of unit batteries 101 and 102 (hereinafter, may be simply referred to as batteries or left and right batteries) have the same configuration as each other. The left and right batteries 101 and 102 are provided symmetrically with the left and right center lines CL2 of the vehicle body interposed therebetween.
In the present embodiment, by mounting the left and right batteries 101 and 102 at a position lower than the loading platform 75 of the rear vehicle body 5, the height for lifting the left and right batteries 101 and 102, which are heavy objects, can be lowered, and the left and right batteries 101 and 102 can be lifted. Is easy to put on and take off. Further, since the upper surface of the battery accommodating space is a large loading platform 75, the convenience of the electric vehicle 1 is improved.

With reference to FIG. 5, the left and right batteries 101 and 102 each have a rectangular cross section (for example, a substantially square shape) and a rectangular parallelepiped shape extending in the longitudinal direction. The left and right batteries 101 and 102 are arranged so as to be inclined in a side view so that the rectangular upper surfaces 101c and 102c are directed diagonally upward and backward, respectively. The left and right batteries 101 and 102 are arranged so as to form a V shape when viewed from the normal direction of the back surface facing diagonally downward and rearward. The left and right batteries 101 and 102 are also inclined with respect to the side surface of the vehicle body orthogonal to the left and right directions. The upper surfaces 101c and 102c are provided with handles for the user to grip.

In the left and right batteries 101 and 102, the upper surfaces 101c and 102c facing diagonally upward and rearward are further directed to the left and right outward. The left and right batteries 101 and 102 are arranged in an inclined standing posture so as to be located on the rear side and the left and right outer sides toward the upper side, respectively. A V-shaped space is formed between the left and right batteries 101 and 102 when viewed from the normal direction. The axes along the longitudinal direction of the left and right batteries 101 and 102 are shown by the middle lines C41 and C42 in FIGS. 2 and 3. Hereinafter, the directions along the axes C41 and C42 are referred to as inclination directions C41 and C42, respectively.

The battery 100 generates a predetermined high voltage (48 to 72V) by appropriately connecting the left and right batteries 101 and 102. The left and right batteries 101 and 102 are each composed of, for example, a lithium ion battery as energy storage that can be charged and discharged. The left and right batteries 101 and 102 include a BMU (Battery Managing Unit) (not shown) that monitors the charge / discharge status, temperature, and the like.

(Control system)
With reference to FIG. 6, the left and right batteries 101 and 102 are connected to a PDU (Power Driver Unit) (not shown) via a junction box (distributor) 123 including a contactor (electromagnetic switch). The PDU constitutes an integrated PCU (Power Control Unit) 120 together with an ECU (Electric Control Unit) (not shown). The electric power from the battery 100 is supplied to the PDU, which is a motor driver, via a contactor interlocking with the main switch. The electric power from the battery 100 is converted from direct current to three-phase alternating current by the PDU, and then supplied to the motor 30 which is a three-phase alternating current motor. The electric motor 30 performs power running operation according to the control by the PDU to drive the electric vehicle 1.

The output voltage from the battery 100 is stepped down via the DC-DC converter 126 and used for charging a 12V sub-battery (not shown) or the like. The sub-battery supplies electric power to general electrical components such as lighting equipment and control system components such as ECU. By mounting the sub-battery, various electromagnetic locks and the like can be operated even when the main battery 100 is removed.

The battery 100 is charged by a charger (DC-AC inverter) 125 connected to an external power source while being mounted on the vehicle body. The battery 100 (left and right batteries 101, 102) can be charged by a charger outside the vehicle while being removed from the vehicle body.

First connection cables 101a and 102a are arranged between the left and right batteries 101 and 102 and the junction box 123. A second connection cable 123a is laid between the junction box 123 and the PCU 120. A third connection cable 125a is laid between the junction box 123 and the charger 125.
A fourth connection cable 126a is arranged between the junction box 123 and the DC-DC converter (down regulator) 126. A three-phase cable 80 extends from the PDU, and the three-phase cable 80 is connected to the electric motor 30. A charging cable 125b is connected to the charger 125. The charging cable 125b may or may not be detachable from the charger 125, and may have an external charger configuration.

(Battery case)
With reference to FIGS. 2, 3 and 5, the battery 100 is inserted and removed from the battery case 100A fixed to the rear vehicle body 5. The battery case 100A includes a pair of left and right unit battery cases 103, 104 (hereinafter, may be simply referred to as a battery case or a left and right battery case) corresponding to a pair of left and right unit batteries 101, 102. The left and right batteries 101 and 102 are inserted and removed obliquely upward and backward and along the longitudinal direction (inclination directions C41 and C42) from the left and right outside with respect to the vertical direction, respectively. The left and right battery cases 103 and 104 are opened diagonally upward and backward and outward on the left and right, respectively. The left and right battery cases 103 and 104 may be integrated or separate from each other. The left and right battery cases 103 and 104 are provided with lock mechanisms (not shown) that regulate the upward release of the left and right batteries 101 and 102 inserted into the cases, respectively.

The left and right batteries 101 and 102 are inserted and removed while sliding diagonally with respect to the vertical direction, respectively. By inserting and removing the left and right batteries 101 and 102 diagonally with respect to the vertical direction, a part of the battery weight at the time of inserting and removing the battery is supported by the downward wall portion (slope portion) 100B of the battery cases 103 and 104. .. This facilitates the insertion / removal work of the left and right batteries 101 and 102. The battery case 100A may support the left and right batteries 101 and 102 so as to be inserted and removed in the inclined directions C41 and C42 inclined to at least one of the front and the left and right outer sides with respect to the vertical direction.

With reference to FIGS. 2 and 3, the batteries 101 and 102 are inserted and removed in a V-shaped locus along their respective longitudinal directions (inclination directions C41 and C42). The batteries 101 and 102 are a single frame member located at the center of the left and right sides of the rear vehicle body 5 (a second rear frame 22 located at the front portion of the rear vehicle body frame 21 and a rear upper frame located above the rear vehicle body frame 21. It can be inserted and removed while avoiding 23).

With reference to FIG. 2, battery connection terminals 101d and 102d are provided at the lower ends of the left and right batteries 101 and 102, respectively. Case connection terminals 103d and 104d are provided on the bottoms (lower ends) of the left and right battery cases 103 and 104 to detachably connect the battery connection terminals 101d and 102d. For example, by storing the left and right batteries 101 and 102 in the battery cases 103 and 104 and operating the lock mechanism in the locked state, the battery connection terminals 101d and 102d and the case connection terminals 103d and 104d are connected. First connection cables 101a and 102a extend from the case connection terminals 103d and 104d toward the junction box 123 (see FIG. 6).

The operation of the lock mechanism and the insertion / removal of the left and right batteries 101 and 102 are manual, and the left and right batteries 101 and 102 are attached to and detached from the vehicle body without tools. The left and right batteries 101 and 102 are mobile batteries that can be attached to and detached from the vehicle body. The left and right batteries 101 and 102 can be used independently, such as being charged by a charger outside the vehicle or being used as a mobile battery as a power source for an external device.

The left and right batteries 101 and 102 can be attached to and detached from the vehicle body in a state where the loading platform 75 is rotated to open the upper surface of the storage portion 76. The left and right batteries 101 and 102 switch between a state in which they can be attached to and detached from the vehicle body and a state in which they cannot be attached to and detached from the vehicle body by opening and closing the loading platform 75.

(Arrangement of rear cushion)
With reference to FIGS. 2 and 3, left and right rear cushions 28 are arranged behind the left and right batteries 101 and 102. The left and right rear cushions 28 are arranged so that the axial direction (expansion and contraction direction) is along the vertical direction. The left and right rear cushions 28 are arranged so as to overlap at least a part of the left and right batteries 101 and 102 in the front-rear direction view. As a result, the influence of the disturbance from the rear on the left and right batteries 101 and 102 is suppressed by the left and right rear cushions 28. For example, the load input to the left and right batteries 101 and 102 at the time of a rear surface collision is suppressed by the left and right rear cushions 28.

As shown by the chain line in FIG. 9, the left and right rear cushions 28 may be arranged on the left and right outer sides of the left and right batteries 101 and 102 in the left and right direction. In this case, the left and right rear cushions 28 are arranged so that at least a part of the left and right rear cushions 28 overlaps the left and right batteries 101 and 102 in the left-right direction view. As a result, the influence of disturbance from the outside in the left-right direction on the left and right batteries 101 and 102 is suppressed by the left and right rear cushions 28. For example, the load input to the left and right batteries 101 and 102 at the time of a fall or a side collision is suppressed by the left and right rear cushions 28.

(Arrangement of electrical components)
With reference to FIGS. 2 to 5, the electrical component 130 including the left and right batteries 101 and 102, the PCU 120, the junction box 123, the charger 125 and the DC-DC converter 126 is mounted on the rear vehicle body 5. The electrical component 130 is mounted on the spring of the rear suspension 29 configured on the rear vehicle body 5. As a result, the increase in the unsprung weight of the rear suspension 29 is suppressed to improve the operability, and the road surface followability and the rough road running performance are improved.

The PCU 120 has a flat shape with a reduced vertical thickness. The PCU 120 is arranged behind the front wall portion 71 of the rear body cover 70, for example, so as to be inclined substantially parallel to the front wall portion 71. The PCU 120 has a rectangular shape in a plan view, and is arranged in a state in which the longitudinal direction is inclined substantially parallel to the front wall portion 71. The PCU 120 is arranged adjacent to the right side of the second rear frame 22. A plurality of heat radiation fins 120a are erected on the upper surface of the PCU 120 facing forward. In front of the heat radiating fins 120a, a traveling wind intake 71a formed on the front wall portion 71 of the rear vehicle body cover 70 is arranged so as to face each other. As a result, the PCU 120 is effectively cooled by the traveling wind taken in from the traveling wind intake 71a, and the other electrical components 130 are also cooled together. The traveling wind intake 71a may be provided not only on the front wall portion 71 but also on the side wall portion 74 and the upper wall portion 72, and may have a wind guide hood. An exhaust port for exhausting the running wind taken into the rear vehicle body cover 70 may be provided at the rear portion of the rear vehicle body cover 70.

A junction box 123 and a DC-DC converter 126 are arranged on the left side of the PCU 120 (the left side of the second rear frame 22). The junction box 123 and the DC-DC converter 126 each have a flat shape with reduced vertical thickness. The junction box 123 and the DC-DC converter 126 are arranged behind the front wall portion 71 of the rear body cover 70, respectively, at an angle substantially parallel to the front wall portion 71. The junction box 123 and the DC-DC converter 126 are arranged adjacent to each other on the left side of the second rear frame 22. The junction box 123 and the DC-DC converter 126 are arranged side by side with each other. In this embodiment, the junction box 123 is arranged at the bottom and the DC-DC converter 126 is arranged at the top.

With reference to FIGS. 2 and 3, at least a part of the junction box 123 (at least a terminal block for connecting the first connection cables 101a and 102a) is arranged in the area R4. The area R4 is an area on the battery connection terminals 101d, 102d side of the central portions 101e, 102e in the length direction of the batteries 101, 102 in the length direction (longitudinal direction) of the batteries 101, 102. In other words, the region R4 is a region on the battery connection terminals 101d and 102d side of the following orthogonal planes (virtual planes). The orthogonal plane is a plane that passes through the central portions 101e and 102e in the length direction of the batteries 101 and 102 and is orthogonal to the length direction. As a result, the first connection cables 101a and 102a that connect the batteries 101 and 102 and the junction box 123 can be shortened.

With reference to FIG. 2, the battery 100 is tilted substantially parallel to the rear side frame 27 in a side view. A charger 125 is arranged between the battery 100 and the rear side frame 27 in a side view. The charger 125 has a flat shape with a reduced vertical thickness. The charger 125 is supported, for example, on a support member extending between the left and right rear side frames 27 in an inclined posture substantially parallel to the rear side frame 27. Since the charger 125 is arranged near the rear end of the rear vehicle body 5, it is easy for the user to access. In addition, the charging operation such as pulling out the charging cord from the charger 125 or connecting an external charging cord is facilitated. The charger 125 is arranged near the rear end of the rear vehicle body 5 to improve heat dissipation when charging the battery.

The charger 125 is located behind the battery 100. Therefore, the influence of the disturbance from the rear on the battery 100 (left and right batteries 101, 102) is suppressed by the charger 125. For example, the load input to the left and right batteries 101 and 102 at the time of a rear surface collision is suppressed by the charger 125.

With reference to FIGS. 3 to 5, the PCU 120, the junction box 123, and the DC-DC converter 126 are arranged on the left and right sides of the vehicle body left and right center line CL2, for example. The charger 125 is arranged so as to straddle the left and right center lines CL2 of the vehicle body, for example.

These electrical components 130 are arranged inside in the left-right direction with respect to the outer portions of the rear vehicle body 5 (left-right outer ends of the left and right rear wheels 4a and 4b). As a result, the influence of disturbance on the electrical component 130 from the outside of the vehicle can be suppressed.
With reference to FIG. 2, the electrical component 130 is arranged above the rear wheel axle 42 and above the left and right rear lower side frames 26 located at the lower ends of the rear body frame 21. As a result, the ground clearance of the electrical component 130 is secured, the influence of disturbance from below the vehicle (road surface side) is suppressed, and water exposure from the road surface side is also suppressed.

Among the electrical components 130, the drive systems such as the left and right batteries 101 and 102, the PCU 120, the junction box 123, and the DC-DC converter 126 are arranged in front of the rear wheel axle 42. As a result, the electrical component 130 of the drive system can be easily connected to the electric motor 30 offset to the front of the rear wheels 4a and 4b, and the wiring length can be shortened by centrally arranging the rear vehicle body 5 on the front side.
By arranging the electrical components 130 together in the rear vehicle body 5, the length of the wiring connecting the components is suppressed, and the occurrence of bending of the wiring due to the relative movement of each component and wear due to interference is suppressed.

Since the electrical component 130 is mounted on the rear vehicle body 5 which is the non-swinging side vehicle body, the weight of the electrical component 130 is suppressed from affecting the rocking of the front vehicle body 3 which is the rocking side vehicle body, and the electric vehicle 1 The effect on turning performance is suppressed.

(Battery insertion / removal)
With reference to FIG. 2, the left and right batteries 101 and 102 are inserted along the inclination directions C41 and C42 with respect to the left and right battery cases 103 and 104, respectively, in a state where the loading platform 75 is rotated to open the upper surface of the storage portion 76. Be taken off. The loading platform 75 opens and closes the upper opening of the storage portion 76 so that the left and right batteries 101 and 102 can be attached and detached. By erecting the large loading platform 75 substantially vertically to open the upper surface of the entire storage portion 76, the batteries 101 and 102 can be easily attached to and detached from the large upper opening. By providing the storage portion 76 below the loading platform 75, the height at which the battery 100 is lifted when the battery 100 is attached / detached can be lowered.

By laying the loading platform 75 substantially horizontally and closing the upper surface of the entire storage portion 76, foreign matter, rainwater, etc. from above can be suppressed from entering the storage portion 76. The loading platform 75 may be locked in conjunction with (or independently of) the main switch.
The electrical component storage unit 76 that stores (mounts) the electrical component 130 including the batteries 101 and 102 is configured by using the rear frame 21A that constitutes the loading platform 75. Therefore, the vehicle body configuration can be simplified as compared with the case where the frames of the electrical component storage unit 76 and the loading platform 75 are individually provided.

As described above, the electric vehicle 1 in the above embodiment comprises an electric motor 30 for traveling the vehicle, a battery 100 for supplying electric power to the electric motor 30, and a rear portion of the vehicle body, and is above the rear wheels 4a and 4b. It is equipped with a rear frame 21A extending toward. The rear frame 21A constitutes an electrical component storage unit 76 that detachably stores the battery 100. A loading platform 75 is formed on the upper surface of the electrical component storage unit 76. The electrical component storage unit 76 includes an opening / closing unit (upper wall portion 72) for opening / closing the battery storage space.

According to this configuration, the rear frame 21A constituting the rear part of the vehicle body is provided with an electrical component storage unit 76 for mounting a heavy battery 100, a loading platform 75 is provided on the upper surface of the electrical component storage unit 76, and further electrical components. The storage portion 76 is provided with an opening / closing portion (upper wall portion 72) that opens and closes the battery storage space. As a result, as compared with the case where the loading platform 75 is provided above the electrical component storage portion 76, the operation of avoiding the loading platform 75 when attaching / detaching the heavy battery 100 becomes unnecessary. Further, the electrical component storage unit 76 opens and closes the battery storage space by an opening / closing unit using a part of the loading platform 75, so that the operation of avoiding the loading platform 75 and attaching / detaching the battery 100 becomes unnecessary. Therefore, it is possible to easily attach / detach the heavy battery 100. Further, the upper surface of the electrical component storage portion 76 can be utilized as the loading platform 75 to make the electric vehicle 1 compact.

In the electric vehicle 1, the electrical component storage unit 76 stores the charger 125 behind the battery 100.
According to this configuration, by arranging the charger 125 behind the battery 100, the charger 125 is arranged near the rear end of the entire vehicle body, so that the charger 125 can be easily accessed. Since the battery 100, which is a high-voltage component and is a heavy object, is relatively arranged closer to the center of the front and rear of the entire vehicle body, the influence of disturbance from the rear can be suppressed and contribute to the concentration of mass.

In the electric vehicle 1, the electrical component storage unit 76 includes a battery case 100A (unit battery cases 103 and 104). The battery case 100A supports the battery 100 (unit batteries 101, 102) so as to be inserted and removed in the inclined directions C41 and C42 inclined with respect to the vertical direction.
According to this configuration, it is easier to lift the heavy batteries 101 and 102 as compared with the case where the batteries 101 and 102 are vertically inserted and removed, and the battery cases 103 and 104 receive at least a part of the battery weight. Therefore, it is possible to facilitate the attachment / detachment work of the batteries 101 and 102.

The electric vehicle 1 includes a swing unit 40 that supports the rear wheels 4a and 4b so as to swing up and down, and a rear cushion 28 that connects the rear frame 21A and the swing unit 40. The rear cushion 28 is such that at least a part of the rear cushion 28 overlaps the battery 100 in a front-rear direction behind the battery 100, or at least a part of the rear cushion 28 overlaps the battery 100 in a side view on the side of the battery 100. Have been placed.
According to this configuration, the rear cushion 28 of the rear wheel suspension device 29 can be used to suppress the influence of disturbance from the rear or side on the battery 100 and improve the protection of the battery 100.

The electric vehicle 1 includes a swing unit 40 that supports the rear wheels 4a and 4b so as to swing up and down. The swing unit 40 includes a motor case 43b for accommodating the electric motor 30 at a position avoiding the rear wheels 4a and 4b in a side view. The motor case 43b is provided so as to be exposed to the side of the vehicle.
According to this configuration, it becomes easier to access the electric motor 30 from the side of the vehicle as compared with the case where the electric motor 30 is arranged so as to overlap the rear wheels 4a and 4b in a side view like an in-wheel motor. Moreover, since the motor case 43b for accommodating the electric motor 30 is provided so as to be exposed on the side of the vehicle, the assembling property and maintainability of the electric motor 30 can be improved.

In the electric vehicle 1, the electric motor 30 is arranged closer to the swing shaft 41 than the central portion 40a of the swing unit 40 in the length direction C2. The swing shaft 41 is provided adjacent to the motor case 43b.
According to this configuration, the operability of the swing unit 40 can be improved by providing the heavy electric motor 30 at a position close to the swing shaft 41 of the swing unit 40.

In the electric vehicle 1, the electric motor 30 may be arranged above the swing unit 40.
According to this configuration, by providing the electric motor 30 on the upper part of the swing unit 40, it is possible to suppress disturbance and water reception from the road surface side with respect to the electric motor 30.

In the electric vehicle 1, the electrical component 130 includes a power control unit 120 that controls the electric motor 30, a down regulator 126 that steps down the output voltage from the battery 100, the battery 100, the power control unit 120, and down. It includes a junction box 123 for connecting the regulator 126.
According to this configuration, by centrally arranging the electrical components 130 on the rear frame 21A, the harness length between the electrical components 130 is shortened, and since each component does not move relative to each other, wear due to bending of wiring or interference, etc. Can be suppressed.

In the electric vehicle 1, the battery 100 (battery 101, 102) is provided with battery connection terminals 101d, 102d on one end side in the length direction. The junction box 123 is arranged closer to the battery connection terminals 101d and 102d than the central portions 101e and 102e in the length direction of the battery 100 (batteries 101 and 102).
According to this configuration, by arranging the battery 100 and the junction box 123 close to each other, the wiring between the battery 100 and the junction box 123 can be further shortened.

(Second Embodiment)
Next, the second embodiment of the present invention will be described with reference to FIGS. 6 to 8 with reference to FIGS. 10 to 15.
In this embodiment, with respect to the first embodiment, the batteries 101 and 102 are arranged horizontally so that the length direction (longitudinal direction) is directed to the left and right, and the batteries 101 and 102 are stacked in two upper and lower stages. It is particularly different in that it is placed. Other same configurations as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 10 to 13, the electric vehicle 201 of the present embodiment is configured as a swing-type electric tricycle similar to that of the first embodiment. Therefore, detailed description of the front vehicle body 3, the rear vehicle body 5, the swing unit 40, the rotation mechanism 50, and the parking lock device 90 will be omitted.
Further, detailed description of the arrangement of the control system and the rear cushion will be omitted.

(Electrical parts)
With reference to FIGS. 11 and 12, a battery 100, which is a power source for the electric motor 30, is arranged below the loading platform 75. A junction box 123, a PCU (Power Control Unit) 120, a DC-DC converter 126, and a charger (charger) 125 are arranged below the loading platform 75 as electrical components 130 related to the electric motor 30 and the battery 100. The rear vehicle body 5 supports electrical components 130 such as the battery 100, the junction box 123, the PCU 120, the DC-DC converter 126, and the charger 125 on the rear vehicle body frame 21 which is on the spring of the rear suspension 29. The rear vehicle body 5 utilizes the upper surface of the storage portion 76 for storing the electrical component 130 as a large loading platform 75.

(Rear body cover)
With reference to FIG. 14, the left side wall portion 74 of the rear body cover 70 is arranged to face one end surface (upper surfaces 101c, 102c located at the left end) of the upper and lower batteries 101, 102 in the length direction. For example, the region of the left side wall portion 74 facing the one end surfaces of the upper and lower batteries 101 and 102 constitutes a lid member 74b that can be attached to and detached from the remaining portion (cover body) of the rear body cover 70. The lid member 74b is removed from the cover body by removing a locking claw or the like (not shown) from the mounted state integrally attached to the cover body. When the lid member 74b is in the attached state, the left side surface of the storage portion 76 is closed. When the lid member 74b is in the removed state, the left side surface of the storage portion 76 is opened. The lid member 74b is an opening / closing portion that can open / close the left side surface of the storage portion 76 (including the battery storage space). The lid member 74b is an opening / closing portion that can open / close the side surface of the storage portion 76 (including the battery storage space). The lid member 74b may be supported by the cover body or the rear body frame 21 via a hinge or the like.

When the lid member 74b opens the storage portion 76, the batteries 101 and 102 are inserted and removed along their respective length directions (left and right directions of the vehicle body). The regions of the batteries 101 and 102 in the detachment direction are provided so as to avoid the frame members of the rear body frame 21 (second rear frame 22, rear upper frame 23, rear lower side frame 26, rear side frame 27).

(Battery)
With reference to FIGS. 11 and 12, the battery 100 is mounted below the loading platform 75. The battery 100 is composed of a plurality of (for example, two upper and lower) unit batteries 101 and 102. The plurality of unit batteries 101 and 102 have the same configuration as each other.
In the present embodiment, by mounting the upper and lower batteries 101 and 102 at a position lower than the loading platform 75 of the rear vehicle body 5, the height for lifting the heavy upper and lower batteries 101 and 102 can be lowered, and the upper and lower batteries 101 and 102 can be lifted. Is easy to put on and take off. Further, since the upper surface of the battery accommodating space is a large loading platform 75, the convenience of the electric vehicle 201 is improved.

With reference to FIG. 15, the upper and lower batteries 101 and 102 each have a rectangular cross section (for example, a substantially square shape) and a prismatic shape (rectangular parallelepiped shape) extending in the longitudinal direction. The upper and lower batteries 101 and 102 are arranged in a horizontal position with the rectangular upper surfaces 101c and 102c facing left, respectively. The upper and lower batteries 101 and 102 are arranged so as to be inclined so that the front and rear sides of the upper surfaces 101c and 102c are substantially parallel to the second rear frame 22 in a side view. The upper and lower batteries 101 and 102 are arranged so that the upper battery 101 is displaced rearward with respect to the lower battery 102. The axes along the longitudinal direction of the upper and lower batteries 101 and 102 are shown by the middle lines C41 and C42 of FIGS. 11 to 13. The upper and lower batteries 101 and 102 have axes C41 and C42 aligned in the left-right direction of the vehicle body.

The battery 100 generates a predetermined high voltage (48 to 72V) by appropriately connecting the upper and lower batteries 101 and 102. The upper and lower batteries 101 and 102 are each composed of, for example, a lithium ion battery as energy storage that can be charged and discharged. The upper and lower batteries 101 and 102 include a BMU (Battery Managing Unit) (not shown) that monitors the charge / discharge status, temperature, and the like.

(Battery case)
With reference to FIGS. 11, 12, and 15, the battery 100 is inserted and removed from the battery case 100A fixed to the rear vehicle body 5. The battery case 100A includes upper and lower battery cases 103 and 104 corresponding to the upper and lower batteries 101 and 102. The upper and lower batteries 101 and 102 are inserted and removed from the upper and lower battery cases 103 and 104 along the longitudinal direction facing the left and right directions, respectively. The upper and lower battery cases 103 and 104 are opened toward the left (one side on the left and right), respectively. The left and right battery cases 103 and 104 may be integrated or separate from each other. The upper and lower battery cases 103 and 104 are provided with a lock mechanism (not shown) that regulates the release of the upper and lower batteries 101 and 102 inserted into the case to the left, respectively.

The upper and lower batteries 101 and 102 are inserted and removed while sliding substantially horizontally with respect to the battery cases 103 and 104, respectively. By inserting and removing the upper and lower batteries 101 and 102 substantially horizontally with respect to the battery cases 103 and 104, the weight of the battery at the time of inserting and removing the battery is supported by the wall portion of the battery cases 103 and 104. This facilitates the insertion / removal work of the upper and lower batteries 101 and 102.

With reference to FIG. 12, battery connection terminals 101d and 102d are provided at the right ends of the upper and lower batteries 101 and 102, respectively. Case connection terminals 103d and 104d for detachably connecting the battery connection terminals 101d and 102d are provided on the bottom (right end) of the upper and lower battery cases 103 and 104. For example, by storing the upper and lower batteries 101 and 102 in the battery cases 103 and 104 and operating the lock mechanism in the locked state, the battery connection terminals 101d and 102d and the case connection terminals 103d and 104d are connected. First connection cables 101a and 102a extend from the case connection terminals 103d and 104d toward the junction box 123 (see FIG. 6).

The operation of the lock mechanism and the insertion / removal of the upper and lower batteries 101 and 102 are manual, and the upper and lower batteries 101 and 102 are attached to and detached from the vehicle body without tools. The upper and lower batteries 101 and 102 are mobile batteries that can be attached to and detached from the vehicle body. The upper and lower batteries 101 and 102 can be used independently, such as being charged by a charger outside the vehicle or being used as a mobile battery as a power source for an external device.

The upper and lower batteries 101 and 102 can be attached to and detached from the vehicle body by removing the lid member 74b and forming an opening 74c in the left wall portion 74 into which the batteries 101 and 102 can be inserted and removed. The upper and lower batteries 101 and 102 switch between a detachable state and a non-detachable state with respect to the vehicle body by opening and closing the opening 74c of the left side wall portion 74 by attaching and detaching the lid member 74b.

(Arrangement of electrical components)
With reference to FIGS. 11 and 12, the electrical component 130 including the upper and lower batteries 101 and 102, the PCU 120, the junction box 123, the charger 125 and the DC-DC converter 126 is mounted on the rear vehicle body 5. The electrical component 130 is mounted on the spring of the rear suspension 29 configured on the rear vehicle body 5. As a result, the increase in the unsprung weight of the rear suspension 29 is suppressed to improve the operability, and the road surface followability and the rough road running performance are improved.

With reference to FIGS. 14 and 15, the PCU 120 is flattened with the vertical thickness suppressed. The PCU 120 is arranged behind the front wall portion 71 of the rear body cover 70, for example, so as to be inclined substantially parallel to the front wall portion 71. The PCU 120 has a rectangular shape in a plan view, and is arranged in a state in which the longitudinal direction is inclined substantially parallel to the front wall portion 71. The PCU 120 is arranged adjacent to the left side of the second rear frame 22. A plurality of heat radiation fins 120a are erected on the upper surface of the PCU 120 facing forward. In front of the heat radiating fins 120a, a traveling wind intake 71a formed on the front wall portion 71 of the rear vehicle body cover 70 is arranged so as to face each other. As a result, the PCU 120 is effectively cooled by the traveling wind taken in from the traveling wind intake 71a, and the other electrical components 130 are also cooled together. The traveling wind intake 71a may be provided not only on the front wall portion 71 but also on the side wall portion 74 and the upper wall portion 72, and may have a wind guide hood. An exhaust port for exhausting the running wind taken into the rear vehicle body cover 70 may be provided at the rear portion of the rear vehicle body cover 70.

A junction box 123 and a DC-DC converter 126 are arranged on the right side of the PCU 120 (on the right side of the second rear frame 22). The junction box 123 and the DC-DC converter 126 each have a flat shape with reduced vertical thickness. The junction box 123 and the DC-DC converter 126 are arranged behind the front wall portion 71 of the rear body cover 70, respectively, at an angle substantially parallel to the front wall portion 71. The junction box 123 and the DC-DC converter 126 are arranged adjacent to each other on the right side of the second rear frame 22. The junction box 123 and the DC-DC converter 126 are arranged side by side with each other. In this embodiment, the junction box 123 is arranged at the bottom and the DC-DC converter 126 is arranged at the top.

With reference to FIG. 13, at least a part of the junction box 123 (at least a terminal block for connecting the first connection cables 101a and 102a) is arranged in the area R4. The area R4 is an area on the battery connection terminals 101d, 102d side of the central portions 101e, 102e in the length direction of the batteries 101, 102 in the length direction (longitudinal direction) of the batteries 101, 102. In other words, the region R4 is a region on the battery connection terminals 101d and 102d side of the following orthogonal planes (virtual planes). The orthogonal plane is a plane that passes through the central portions 101e and 102e in the length direction of the batteries 101 and 102 and is orthogonal to the length direction. As a result, the first connection cables 101a and 102a that connect the batteries 101 and 102 and the junction box 123 can be shortened. In the present embodiment, the central portions 101e and 102e of the batteries 101 and 102 in the length direction are on the left and right center lines CL2 of the rear vehicle body 5 in the front-rear direction. Therefore, the region R4 is a region on the right side of the left and right center lines CL2.

With reference to FIGS. 11 and 12, a charger 125 is arranged behind the battery 100. The charger 125 has a flat shape with a reduced vertical thickness. The charger 125 is supported, for example, on a support member extending between the left and right rear side frames 27 in an inclined posture substantially parallel to the rear side frame 27. Since the charger 125 is arranged near the rear end of the rear vehicle body 5, it is easy for the user to access. In addition, the charging operation such as pulling out the charging cord from the charger 125 or connecting an external charging cord is facilitated. The charger 125 is arranged near the rear end of the rear vehicle body 5 to improve heat dissipation when charging the battery.

The charger 125 is located behind the battery 100. Therefore, the influence of the disturbance from the rear on the battery 100 (upper and lower batteries 101, 102) is suppressed by the charger 125. For example, the load input to the upper and lower batteries 101 and 102 at the time of a rear collision is suppressed by the charger 125.

With reference to FIGS. 13 to 15, the PCU 120, the junction box 123, and the DC-DC converter 126 are arranged on the left and right sides of the vehicle body left and right center line CL2, for example. The charger 125 is arranged so as to straddle the left and right center lines CL2 of the vehicle body, for example.

These electrical components 130 are arranged inside in the left-right direction with respect to the outer portions of the rear vehicle body 5 (left-right outer ends of the left and right rear wheels 4a and 4b). As a result, the influence of disturbance on the electrical component 130 from the outside of the vehicle can be suppressed.
With reference to FIGS. 11 and 12, the electrical components 130 are arranged above the rear wheel axle 42 and above the left and right rear lower side frames 26 located at the lower ends of the rear body frame 21. As a result, the ground clearance of the electrical component 130 is secured, the influence of disturbance from below the vehicle (road surface side) is suppressed, and water exposure from the road surface side is also suppressed.

Among the electrical components 130, the drive systems such as the upper and lower batteries 101 and 102, the PCU 120, the junction box 123, and the DC-DC converter 126 are arranged in front of the rear wheel axle 42. As a result, the electrical component 130 of the drive system can be easily connected to the electric motor 30 offset to the front of the rear wheels 4a and 4b, and the wiring length can be shortened by centrally arranging the rear vehicle body 5 on the front side.
By arranging the electrical components 130 together in the rear vehicle body 5, the length of the wiring connecting the components is suppressed, and the occurrence of bending of the wiring due to the relative movement of each component and wear due to interference is suppressed.

Since the electrical component 130 is mounted on the rear vehicle body 5 which is the non-swinging side vehicle body, the weight of the electrical component 130 is suppressed from affecting the rocking of the front vehicle body 3 which is the rocking side vehicle body, and the electric vehicle 201 The effect on turning performance is suppressed.

(Battery insertion / removal)
With reference to FIG. 14, the upper and lower batteries 101 and 102 are provided with respect to the upper and lower battery cases 103 and 104, respectively, in a state where the lid member 74b is removed and an opening 74c in which the batteries 101 and 102 can be inserted and removed is formed in the left wall portion 74. Is inserted and removed. The upper and lower batteries 101 and 102 are inserted and removed while sliding substantially horizontally with respect to the battery cases 103 and 104, respectively. As a result, the weight of the battery when the battery is inserted and removed is supported by the downward wall portion of the battery cases 103 and 104. By providing the storage portion 76 below the loading platform 75, the height at which the battery 100 is lifted when the battery 100 is attached / detached can be lowered. The storage unit 76 allows the battery 100 to be attached and detached from the side of the vehicle while avoiding the upper surface of the loading platform 75. As a result, the battery 100 can be attached and detached even when the load is loaded on the loading platform 75, improving convenience.

The storage portion 76 attaches the lid member 74b to close the opening 74c of the left side wall portion 74. As a result, even when a large opening 74c is formed, it is possible to prevent foreign matter, rainwater, or the like from entering the storage portion 76 through the opening 74c. The lid member 74b may be lockable in conjunction with (or independently of) the main switch.
The electrical component storage unit 76 that stores (mounts) the electrical component 130 including the batteries 101 and 102 is configured by using the rear frame 21A that constitutes the loading platform 75. Therefore, the vehicle body configuration can be simplified as compared with the case where the frames of the electrical component storage unit 76 and the loading platform 75 are individually provided.

As described above, also in the electric vehicle 201 according to the above embodiment, the electric motor 30 for traveling the vehicle, the battery 100 for supplying electric power to the electric motor 30, and the rear portion of the vehicle body are formed, and the rear wheels 4a and 4b are formed. It includes a rear frame 21A that extends upward. The rear frame 21A constitutes an electrical component storage unit 76 that detachably stores the battery 100. A loading platform 75 is formed on the upper surface of the electrical component storage unit 76. The electrical component storage section 76 includes an opening / closing section (cover member 74b) for opening / closing the battery storage space.

According to this configuration, the rear frame 21A constituting the rear part of the vehicle body is provided with an electrical component storage unit 76 for mounting a heavy battery 100, a loading platform 75 is provided on the upper surface of the electrical component storage unit 76, and further electrical components. The storage portion 76 is provided with an opening / closing portion (cover member 74b) for opening and closing the battery storage space. As a result, as compared with the case where the loading platform 75 is provided above the electrical component storage portion 76, the operation of avoiding the loading platform 75 when attaching / detaching the heavy battery 100 becomes unnecessary. Further, the electrical component storage unit 76 opens and closes the battery storage space by an opening / closing unit using a part of the loading platform 75, so that the operation of avoiding the loading platform 75 and attaching / detaching the battery 100 becomes unnecessary. Therefore, it is possible to easily attach / detach the heavy battery 100. Further, the upper surface of the electrical component storage portion 76 can be utilized as a loading platform 75 to make the electric vehicle 201 compact.

In the electric vehicle 201, the electrical component storage unit 76 allows the battery 100 to be attached and detached from the side of the vehicle while avoiding the upper surface of the loading platform 75.
According to this configuration, since the battery 100 can be attached / detached while avoiding the upper surface of the loading platform 75, the battery 100 can be attached / detached even when the load is loaded on the loading platform 75, and the convenience can be improved.

(Third Embodiment)
Next, the third embodiment of the present invention will be described with reference to FIGS. 6 to 8 with reference to FIGS. 16 to 22.
This embodiment is particularly different from the first embodiment in that the left and right batteries 101 and 102 are tilted forward and arranged in an inclined standing posture so as to be located on the front side and the left and right outside toward the upper side. Other same configurations as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 16 to 18, the electric vehicle 301 of the present embodiment is configured as a swing-type electric tricycle similar to that of the first embodiment. Therefore, detailed description of the front vehicle body 3, the rear vehicle body 5, the swing unit 40, the rotation mechanism 50, and the parking lock device 90 will be omitted.
Further, detailed description of the arrangement of the control system and the rear cushion will be omitted.

(Electrical parts)
With reference to FIGS. 17 and 20, a battery 100, which is a power source for the electric motor 30, is arranged below the loading platform 75. A junction box 123, a PCU (Power Control Unit) 120, a DC-DC converter 126, and a charger (charger) 125 are arranged below the loading platform 75 as electrical components 130 related to the electric motor 30 and the battery 100. The rear vehicle body 5 supports electrical components 130 such as the battery 100, the junction box 123, the PCU 120, the DC-DC converter 126, and the charger 125 on the rear vehicle body frame 21 which is on the spring of the rear suspension 29. The rear vehicle body 5 utilizes the upper surface of the storage portion 76 for storing the electrical component 130 as a large loading platform 75.

(Battery)
With reference to FIGS. 17 and 18, the battery 100 is mounted below the loading platform 75. The battery 100 is composed of a plurality of (for example, two left and right) unit batteries 101 and 102. The plurality of unit batteries 101 and 102 have the same configuration as each other. The left and right batteries 101 and 102 are provided symmetrically with the left and right center lines CL2 of the vehicle body interposed therebetween.
In the present embodiment, by mounting the left and right batteries 101 and 102 at a position lower than the loading platform 75 of the rear vehicle body 5, the height for lifting the left and right batteries 101 and 102, which are heavy objects, can be lowered, and the left and right batteries 101 and 102 can be lifted. Is easy to put on and take off. Further, since the upper surface of the battery accommodating space is a large loading platform 75, the convenience of the electric vehicle 301 is improved.

With reference to FIG. 20, the left and right batteries 101 and 102 each have a rectangular cross section (for example, a substantially square shape) and a rectangular parallelepiped shape extending in the longitudinal direction. The left and right batteries 101 and 102 are arranged so as to be inclined in a side view so that the rectangular upper surfaces 101c and 102c are directed diagonally upward and forward, respectively. The left and right batteries 101 and 102 are arranged so as to form a V shape when viewed from the normal direction of the back surface facing diagonally upward and rearward. The left and right batteries 101 and 102 are also inclined with respect to the side surface of the vehicle body orthogonal to the left and right directions.

In the left and right batteries 101 and 102, the upper surfaces 101c and 102c facing diagonally upward and forward are further directed to the left and right outward. The left and right batteries 101 and 102 are arranged in an inclined standing posture so as to be located on the front side and the left and right outer sides toward the upper side, respectively. A V-shaped space is formed between the left and right batteries 101 and 102 when viewed from the normal direction. Axis lines along the longitudinal direction of the left and right batteries 101 and 102 are shown by middle lines C41 and C42 in FIGS. 17 and 18. Hereinafter, the directions along the axes C41 and C42 are referred to as inclination directions C41 and C42, respectively.

The battery 100 generates a predetermined high voltage (48 to 72V) by appropriately connecting the left and right batteries 101 and 102. The left and right batteries 101 and 102 are each composed of, for example, a lithium ion battery as energy storage that can be charged and discharged. The left and right batteries 101 and 102 include a BMU (Battery Managing Unit) (not shown) that monitors the charge / discharge status, temperature, and the like.

(Battery case)
With reference to FIGS. 17, 18, and 20, the battery 100 is inserted and removed from the battery case 100A fixed to the rear vehicle body 5. The battery case 100A includes left and right battery cases 103 and 104 corresponding to the left and right batteries 101 and 102. The left and right batteries 101 and 102 are inserted and removed from the left and right battery cases 103 and 104 diagonally upward and forward and from the left and right outside along the longitudinal direction (inclination directions C41 and C42), respectively. The left and right battery cases 103 and 104 are opened diagonally upward and forward and outward to the left and right, respectively. The left and right battery cases 103 and 104 may be integrated or separate from each other. The left and right battery cases 103 and 104 are provided with lock mechanisms (not shown) that regulate the upward release of the left and right batteries 101 and 102 inserted into the cases, respectively.

The left and right batteries 101 and 102 are inserted and removed while sliding diagonally with respect to the vertical direction, respectively. By inserting and removing the left and right batteries 101 and 102 diagonally with respect to the vertical direction, a part of the battery weight at the time of inserting and removing the battery is supported by the downward wall portion (slope portion) 100B of the battery cases 103 and 104. .. This facilitates the insertion / removal work of the left and right batteries 101 and 102.

With reference to FIGS. 17 and 18, the batteries 101 and 102 are inserted and removed in a V-shaped locus along their respective longitudinal directions (inclination directions C41 and C42). The batteries 101 and 102 are a single frame member located at the center of the left and right sides of the rear vehicle body 5 (a second rear frame 22 located at the front portion of the rear vehicle body frame 21 and a rear upper frame located above the rear vehicle body frame 21. It can be inserted and removed while avoiding 23).

With reference to FIG. 17, battery connection terminals 101d and 102d are provided at the lower ends of the left and right batteries 101 and 102, respectively. Case connection terminals 103d and 104d are provided on the bottoms (lower ends) of the left and right battery cases 103 and 104 to detachably connect the battery connection terminals 101d and 102d. For example, by storing the left and right batteries 101 and 102 in the battery cases 103 and 104 and operating the lock mechanism in the locked state, the battery connection terminals 101d and 102d and the case connection terminals 103d and 104d are connected. First connection cables 101a and 102a extend from the case connection terminals 103d and 104d toward the junction box 123 (see FIG. 6).

The operation of the lock mechanism and the insertion / removal of the left and right batteries 101 and 102 are manual, and the left and right batteries 101 and 102 are attached to and detached from the vehicle body without tools. The left and right batteries 101 and 102 are mobile batteries that can be attached to and detached from the vehicle body. The left and right batteries 101 and 102 can be used independently, such as being charged by a charger outside the vehicle or being used as a mobile battery as a power source for an external device.

As will be described later, the left and right batteries 101 and 102 can be attached to and detached from the vehicle body in a state where the front vehicle body 3 is swung with respect to the rear vehicle body 5. The left and right batteries 101 and 102 switch between a detachable state and a non-detachable state with respect to the vehicle body depending on whether or not the front vehicle body 3 is in a swinging state.

(Arrangement of electrical components)
With reference to FIGS. 17 to 20, the electrical component 130 including the left and right batteries 101, 102, the PCU 120, the junction box 123, the charger 125, and the DC-DC converter 126 is mounted on the rear vehicle body 5. The electrical component 130 is mounted on the spring of the rear suspension 29 configured on the rear vehicle body 5. As a result, the increase in the unsprung weight of the rear suspension 29 is suppressed to improve the operability, and the road surface followability and the rough road running performance are improved.

With reference to FIGS. 19 and 20, the PCU 120 is flattened with a reduced vertical thickness. The PCU 120 is arranged behind the front wall portion 71 of the rear body cover 70, for example, so as to be inclined substantially parallel to the front wall portion 71. The PCU 120 has a rectangular shape in a plan view, and is arranged so that the longitudinal direction is directed to the left-right direction. A plurality of heat radiation fins 120a are erected on the upper surface of the PCU 120 facing forward. In front of the heat radiating fins 120a, a traveling wind intake 71a formed on the front wall portion 71 of the rear vehicle body cover 70 is arranged so as to face each other. As a result, the PCU 120 is effectively cooled by the traveling wind taken in from the traveling wind intake 71a, and the other electrical components 130 are also cooled together. The traveling wind intake 71a may be provided not only on the front wall portion 71 but also on the side wall portion 74 and the upper wall portion 72, and may have a wind guide hood. An exhaust port for exhausting the running wind taken into the rear vehicle body cover 70 may be provided at the rear portion of the rear vehicle body cover 70.

A junction box 123 and a DC-DC converter 126 are arranged in a space surrounded by the PCU 120, the battery 100, and the rear lower side frame 26 when viewed from the side. The junction box 123 and the DC-DC converter 126 each have a flat shape with reduced vertical thickness, and are supported substantially horizontally on a support member extending between the left and right rear lower side frames 26, for example.

With reference to FIG. 17, at least a part of the junction box 123 (at least the terminal block connecting the first connection cables 101a and 102a) is centered in the length direction of the batteries 101 and 102 in the length direction of the batteries 101 and 102. It is arranged in the area R4 on the battery connection terminals 101d and 102d side of the parts 101e and 102e. In other words, at least a part of the junction box 123 is closer to the battery connection terminals 101d and 102d than the orthogonal plane (virtual plane) that passes through the central portions 101e and 102e in the length direction of the batteries 101 and 102 and is orthogonal to the length direction. It is arranged in the area R4 of. As a result, the first connection cables 101a and 102a that connect the batteries 101 and 102 and the junction box 123 can be shortened.

With reference to FIG. 19, the charger 125 is arranged in a space surrounded by the battery 100, the rear upper frame 23, and the rear side frame 27 in a side view. The charger 125 has a flat shape with a reduced vertical thickness. The charger 125 is supported, for example, on a support member extending between the left and right rear side frames 27 in an inclined posture substantially parallel to the rear side frame 27. Since the charger 125 is arranged near the rear end of the rear vehicle body 5, it is easy for the user to access. In addition, the charging operation such as pulling out the charging cord from the charger 125 or connecting an external charging cord is facilitated. The charger 125 is arranged near the rear end of the rear vehicle body 5 to improve heat dissipation when charging the battery.

The charger 125 is located behind the battery 100. Therefore, the influence of the disturbance from the rear on the battery 100 (left and right batteries 101, 102) is suppressed by the charger 125. For example, the load input to the left and right batteries 101 and 102 at the time of a rear surface collision is suppressed by the charger 125.

The PCU 120 is arranged so as to straddle the left and right center lines CL2 of the vehicle body, for example. The junction box 123 and the DC-DC converter 126 are arranged side by side with the left and right center lines CL2 of the vehicle body interposed therebetween, for example. The charger 125 is arranged so as to straddle the left and right center lines CL2 of the vehicle body, for example.

These electrical components 130 are arranged inside in the left-right direction with respect to the outer portions of the rear vehicle body 5 (left-right outer ends of the left and right rear wheels 4a and 4b). As a result, the influence of disturbance on the electrical component 130 from the outside of the vehicle can be suppressed.
The electrical components 130 are arranged above the rear axle 42 and above the left and right rear lower side frames 26 located at the lower ends of the rear body frame 21. As a result, the ground clearance of the electrical component 130 is secured, the influence of disturbance from below the vehicle (road surface side) is suppressed, and water exposure from the road surface side is also suppressed.

Among the electrical components 130, the drive systems such as the left and right batteries 101 and 102, the PCU 120, the junction box 123, and the DC-DC converter 126 are arranged in front of the rear wheel axle 42. As a result, the electrical component 130 of the drive system can be easily connected to the electric motor 30 offset to the front of the rear wheels 4a and 4b, and the wiring length can be shortened by centrally arranging the rear vehicle body 5 on the front side.
By arranging the electrical components 130 together in the rear vehicle body 5, the length of the wiring connecting the components is suppressed, and the occurrence of bending of the wiring due to the relative movement of each component and wear due to interference is suppressed.

Since the electrical component 130 is mounted on the rear vehicle body 5 which is the non-swinging side vehicle body, the weight of the electrical component 130 is suppressed from affecting the rocking of the front vehicle body 3 which is the rocking side vehicle body, and the electric vehicle 301 The effect on turning performance is suppressed.

(Battery insertion / removal)
With reference to FIGS. 17 and 19, the front wall portion 71 of the rear body cover 70 has left and right openings 77 at positions facing the upper surfaces 101c and 102c of the left and right batteries 101 and 102 in the insertion / removal direction (longitudinal direction), respectively. It is formed. The left and right openings 77 open the battery housing portion 76 toward the front. The left and right openings 77 have, for example, a rectangular shape when viewed in the front-rear direction, and the prismatic left and right batteries 101 and 102 can be inserted and removed, respectively. The left and right openings 77 face the gap S1 between the front and rear vehicle bodies 3 and 5.

Also referring to FIG. 21, when the front vehicle body 3 is in the upright state A, at least a part of the rear inclined portion 9a of the front vehicle body 3 is at a position facing the opening 77 with a gap S1. The gap S1 is smaller than the length of the left and right batteries 101 and 102 in the insertion / removal direction. Therefore, the left and right batteries 101 and 102 cannot be inserted or removed. In order to enable the insertion and removal of the left and right batteries 101 and 102, it is necessary to swing the front vehicle body 3 to the swing state B (see FIG. 22) and retract the rear inclined portion 9a from the position facing the opening 77. be.

With reference to FIG. 22, the front vehicle body 3 is brought into the swinging state B by rotating from the upright state A (see FIG. 21) around the axis C1 of the rotating mechanism 50 by a predetermined angle θ. The front vehicle body 3 retracts the rear inclined portion 9a from the position facing the opening 77 in the rocking state B, and enables the left and right batteries 101 and 102 to be inserted and removed. At this time, the swing angle θ of the front vehicle body 3 is within an angle range in which the rotation mechanism 50 can lock the relative rotation. As a result, the front vehicle body 3 can be locked in the swinging state B when the left and right batteries 101 and 102 are inserted and removed.

The left and right openings 77 are each provided with a lid 78 that can be opened and closed. By providing the lid 78 in the left and right openings 77 facing the front of the vehicle, it is possible to prevent foreign matter and rainwater from entering the battery side. The lid 78 may be formed with a running air intake that allows the running air (cooling air) to be taken into the battery side. The lid 78 may be lockable in conjunction with (or independently of) the main switch.

In the upright state A of the front vehicle body 3, the left and right openings 77 make the left and right batteries 101 and 102 non-detachable due to the rear inclined portion 9a of the front vehicle body 3. When the front vehicle body 3 swings to the left or right to enter the swing state B, the left and right openings 77 can be attached to or detached from the left and right batteries 101 and 102. When the front vehicle body 3 is in the swing state B, the rear inclined portion 9a retracts from the opening 77 on the side opposite to the swing direction, and the corresponding ones of the left and right batteries 101 and 102 can be attached to and detached from the opening 77.

That is, as shown in FIG. 8, when the front vehicle body 3 is rolled to the right side, the opening 77 on the left side of the rear vehicle body 5 is exposed forward, and the battery 101 on the left side can be attached and detached. On the other hand, although not shown, when the front vehicle body 3 is rolled to the left side, the opening 77 on the right side of the rear vehicle body 5 is exposed to the front, and the battery 102 on the right side can be attached and detached. Since any of the left and right batteries 101 and 102 can be attached and detached from the side opposite to the tilting direction (swing direction) of the front vehicle body 3, the left and right batteries 101 and 102 can be attached and detached from the user standing on the side opposite to the tilting direction of the front vehicle body 3. Easy to put on and take off.

In this way, the left and right batteries 101 and 102 are switched between the state in which the left and right batteries 101 and 102 are detachable and the state in which the left and right batteries 101 and 102 are not detachable according to the relative swing of the front and rear vehicle bodies 3 and 5. Therefore, when the electric vehicle 301 is parked, the left and right batteries 101 and 102 cannot be reliably attached and detached only by operating the parking lock, and the anti-theft property of the battery 100 is improved. Since the periphery of the battery 100 is covered with the rear body cover 70 and shielded from the outside, the anti-theft property of the battery 100 is also improved in this respect.

The electric vehicle 301 includes a parking lock device 90 that regulates the swing of the front vehicle body 3 by operating the parking lever 91. The parking lever 91 is locked when the main switch is turned off at the locked position where the swing of the front vehicle body 3 is locked. The electric vehicle 301 can be locked in a locked state in which the left and right batteries 101 and 102 cannot be taken out by the following procedure.

That is, the parking lever 91 is operated to the locked position with the front vehicle body 3 equivalent to the upright state A, and the main switch is turned off in this state. Then, the swing of the front vehicle body 3 is locked in the upright state A, and the left and right batteries 101 and 102 are locked in a state where they cannot be taken out. In order to operate the parking lever 91 from this state to release the swing lock (lock for taking out the left and right batteries 101 and 102) of the front vehicle body 3, it is necessary to turn on the main switch.

As described above, the electric vehicle 301 can be locked in a state where the left and right batteries 101 and 102 cannot be taken out when parking or the like, and the anti-theft property of the battery 100 is improved. Then, the anti-theft lock of the battery 100 is locked by using the swing lock mechanism 93 (parking lock device 90) of the front vehicle body 3 that is banked when the electric vehicle 301 is turning, so that the anti-theft lock has a simple configuration. The structure can be realized.

Further, by providing the storage portion 76 below the loading platform 75, the height at which the battery 100 is lifted when the battery 100 is attached / detached can be lowered.
Since the electrical component storage section 76 for storing (mounting) the electrical component 130 including the batteries 101 and 102 is configured by using the rear frame 21A constituting the loading platform 75, the frame of the electrical component storage section 76 and the loading platform 75 is used. The vehicle body configuration can be simplified as compared with the case where the above are individually provided.

As described above, also in the electric vehicle 301 according to the above embodiment, the electric motor 30 for traveling the vehicle, the battery 100 for supplying electric power to the electric motor 30, and the rear portion of the vehicle body are formed, and the rear wheels 4a and 4b are formed. It includes a rear frame 21A that extends upward. The rear frame 21A constitutes an electrical component storage unit 76 that detachably stores the battery 100. A loading platform 75 is formed on the upper surface of the electrical component storage unit 76. The electrical component storage unit 76 includes an opening / closing unit (lid 78) for opening / closing the battery storage space.

According to this configuration, the rear frame 21A constituting the rear part of the vehicle body is provided with an electrical component storage unit 76 for mounting a heavy battery 100, a loading platform 75 is provided on the upper surface of the electrical component storage unit 76, and further electrical components. The storage unit 76 is provided with an opening / closing unit (lid 78) that opens and closes the battery storage space. As a result, as compared with the case where the loading platform 75 is provided above the electrical component storage portion 76, the operation of avoiding the loading platform 75 when attaching / detaching the heavy battery 100 becomes unnecessary. Further, the electrical component storage unit 76 opens and closes the battery storage space by an opening / closing unit using a part of the loading platform 75, so that the operation of avoiding the loading platform 75 and attaching / detaching the battery 100 becomes unnecessary. Therefore, it is possible to easily attach / detach the heavy battery 100. Further, the upper surface of the electrical component storage unit 76 can be utilized as a loading platform 75 to make the electric vehicle 301 compact.

In the electric vehicle 301, the electrical component storage unit 76 allows the battery 100 to be attached and detached from the front of the vehicle while avoiding the upper surface of the loading platform 75.
According to this configuration, since the battery 100 can be attached / detached while avoiding the upper surface of the loading platform 75, the battery 100 can be attached / detached even when the load is loaded on the loading platform 75, and the convenience can be improved.

The present invention is not limited to the above embodiment. For example, in the embodiment, a covered tricycle is illustrated, but the present invention is not limited to this. The present invention is widely applicable to saddle-riding vehicles in which the front and rear bodies can rotate relative to each other, including vehicles without a roof. The saddle-riding type vehicle includes all vehicles that the driver rides across the vehicle body, and includes not only motorcycles (including motorized bicycles and scooter type vehicles) but also three wheels (one front wheel and two rear wheels). , Front two-wheeled and rear one-wheeled vehicles) or four-wheeled vehicles are also included.

FIG. 23 shows an electric vehicle 1'as a motorcycle in this embodiment. The electric vehicle 1'has "the rear frame 21A constitutes an electrical component storage unit 76 that detachably stores the battery 100", "a loading platform 75 is formed on the upper surface of the electrical component storage unit 76", and ". The electrical component storage unit 76 includes an opening / closing unit (upper wall portion 72) for opening / closing the battery storage space. ” Hereinafter, the electric vehicle 1'will be described, but the same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted.

The electric vehicle 1'supports one front wheel 2, which is a steering wheel, on the front vehicle body 3. The electric vehicle 1'supports a single rear wheel 4, which is a driving wheel, on the rear vehicle body 5. The front body frame 11 of the front body 3 and the rear body frame 21 of the rear body 5 are integrated so as not to rotate relative to each other. The rear body frame 21 constitutes a rear frame 21A extending upward of the rear wheels 4 when viewed from the side.

A pivot bracket 19 is fixed to the lower cross frame 17 and the rear lower cross frame 18 of the front body frame 21. The front end portion of the swing arm 40'is supported on the pivot bracket 19 so as to be swingable up and down via a swing shaft (pivot shaft) 41' along the left-right direction. A rear wheel 4 is supported at the rear end of the swing arm 40'. The swing arm 40'is arranged with the length direction facing the front-rear direction so as to extend from the swing shaft 41'to the rear wheel axle 42 in a side view.

The electric motor 30', which is the drive source of the electric vehicle 1, is mounted, for example, in the middle portion of the swing arm 40'in the length direction. The electric motor 30'is arranged so-called horizontally with the drive shaft oriented in the left-right direction of the vehicle, and is linked to the rear wheel 4 via the drive chain 45'. The electric motor 30'is mounted under the spring of the rear suspension 29 including the rear cushion 28, but may be mounted on the front body frame 11 or the rear frame 21A on the spring of the rear suspension 29.

Batteries 100 (left and right batteries 101, 102) that can be attached to and detached from the rear vehicle body 5 are arranged above the swing arm 40'and below the loading platform 75. A junction box 123, a PCU (Power Control Unit) 120, a DC-DC converter 126, and a charger (charger) 125 are arranged below the loading platform 75 as electrical components 130 related to the electric motor 30'and the battery 100. .. The rear frame 21A constitutes an electrical component storage unit 76 for accommodating the electrical component 130. The upper wall portion 72 forming the upper surface of the loading platform 75 is connected to the rear body frame 11 via a hinge or the like. The upper wall portion 72 constitutes an opening / closing portion that can open / close the upper surface of the electrical component storage portion 76 (including the battery storage space).

Also in this electric vehicle 1', when the heavy battery 100 is attached / detached, the operation of avoiding the loading platform 75 becomes unnecessary, and the heavy battery 100 can be easily attached / detached. Note that FIG. 23 illustrates the arrangement of the electrical component 130 in the first embodiment, but the present invention is not limited to this. For example, it is also possible to apply the arrangement of the electrical component 130 in the second embodiment and the third embodiment.

Further, the electrical component 130 may be mounted on the spring of the rear suspension 29. For example, a rear frame extending rearward above the rear wheels 4 may be integrally provided on the front vehicle body 3, and the electrical component 130 may be mounted on the rear frame. When the rear frame is provided on the front vehicle body 3, it becomes easy to secure the swing space of the swing unit 40 and the rear wheel 4.
The rear cushion 28 may be arranged in front of the battery 100. In this case, the rear cushion 28 may be provided as a single unit. Further, the rear cushion 28 may be connected to the vehicle body via a link mechanism.

In the first embodiment, the entire upper wall portion 72 forming the upper surface (cargo loading surface) of the loading platform 75 is used as an opening / closing portion for opening and closing the upper surface of the electrical component storage portion 76, but the present invention is not limited to this. For example, a part of the upper wall portion 72 may be used as an opening / closing portion. Further, in the third embodiment, the entire front wall portion 71 may be used as an opening / closing portion for opening / closing the front surface of the electrical component storage portion 76. Further, in the second embodiment, the entire side wall portion 74 may be used as an opening / closing portion for opening / closing the side surface of the electrical component storage portion 76. Further, at least a part of the rear wall portion 73 may be an opening / closing portion for opening / closing the rear surface of the electrical component storage portion 76. That is, at least a part of the rear body cover 70 that covers the electrical component storage portion 76 may be an opening / closing portion that allows the battery 100 to be attached / detached.
The configuration in the above embodiment is an example of the present invention, and various modifications can be made without departing from the gist of the present invention, such as replacing the constituent elements of the embodiment with well-known constituent elements.

1,1', 201,301 Electric vehicle 2 Front wheel 4 Rear wheel 4a, 4b Left and right rear wheel 21A Rear frame 28 Rear cushion 30, 30'Electric motor 40 Swing unit (swing arm)
40'Swing arm 40a Central part C2 Length direction 41 Swing shaft 43b Motor case 72 Upper wall part (opening and closing part)
74b Lid member (opening and closing part)
75 Loading platform 76 Electrical parts storage 78 Lid (opening and closing)
100 Battery 101,102 Unit Battery 101d, 102d Battery Connection Terminal 101e, 102e Central C41, C42 Tilt 100A Battery Case 103,104 Unit Battery Case 120 Power Control Unit 123 Junction Box 125 Charger
126 Down regulator 130 Electrical components

Claims (10)

An electric motor (30) for running a vehicle and
An electric vehicle (1,1', 201,301) including a battery (100) that supplies electric power to the electric motor (30).
It is equipped with a rear frame (21A) that constitutes the rear part of the vehicle body and extends upward toward the rear wheels (4,4a, 4b).
The rear frame (21A) constitutes an electrical component storage unit (76) that detachably stores the battery (100), and also constitutes a loading platform (75) on the upper surface of the electrical component storage unit (76).
The electrical component storage unit (76) includes an opening / closing unit (72, 74b, 78) for opening / closing the battery storage space.
The electrical component storage unit (76) includes a battery case (100A) that supports the battery (100) so as to be inserted and removed in an inclined direction (C41, C42) inclined with respect to the vertical direction.
The battery (100) is composed of a pair of unit batteries (101, 102).
The pair of unit batteries (101, 102) are electric vehicles arranged in a V shape and inserted and removed along the inclination directions (C41, C42), respectively. Body front structure (3) and
The vehicle body rear structure (5) separated from the vehicle body front structure (3) and
A rotating mechanism (50) that connects the vehicle body front structure (3) and the vehicle body rear structure (5) so as to be relatively swingable around an axis (C1) facing the vehicle front-rear direction.
An electric motor (30) for running a vehicle and
An electric vehicle (1,1', 201,301) including a battery (100) that supplies electric power to the electric motor (30).
It is equipped with a rear frame (21A) that constitutes the rear part of the vehicle body and extends upward toward the rear wheels (4,4a, 4b).
The rear frame (21A) constitutes an electrical component storage unit (76) that detachably stores the battery (100), and also constitutes a loading platform (75) on the upper surface of the electrical component storage unit (76).
The electrical component storage unit (76) includes an opening / closing unit (72, 74b, 78) for opening / closing the battery storage space.
The electrical component storage unit (76) includes a battery case (100A) that supports the battery (100) so as to be inserted and removed in an inclined direction (C41, C42) inclined with respect to the vertical direction.
The battery (100) can be inserted and removed from the front wall portion (71) of the rear vehicle body cover (70) that covers the vehicle body rear structure (5) at a position facing the battery (100) in the insertion / removal direction. An opening (77) is formed.
The opening (77) is an electric vehicle facing the gap (S1) between the vehicle body front structure (3) and the vehicle body rear structure (5). The electric vehicle according to claim 1 or 11, wherein the electrical component storage unit (76) stores a charger (125) behind the battery (100). The electric vehicle according to claim 11, wherein the electrical component storage unit (76) allows the battery (100) to be attached and detached from the front direction avoiding the upper surface of the loading platform (75). A swing arm (40) that supports the rear wheels (4a, 4b) so as to be able to swing up and down, and a rear cushion (28) that connects the rear frame (21A) and the swing arm (40) are provided.
The rear cushion (28) overlaps the battery (100) in the front-rear direction behind the battery (100), or overlaps the battery (100) in the side view from the side of the battery (100). The electric vehicle according to any one of claims 1, 11 to 13, which is arranged in such a manner. It is equipped with a swing arm (40) that supports the rear wheels (4a, 4b) so that it can swing up and down.
The swing arm (40) includes a motor case (43b) for accommodating the electric motor (30) at a position avoiding the rear wheels (4a, 4b) in a side view. The electric vehicle according to any one of the items. The electric motor (30) is arranged on the swing axis (41) side of the central portion (40a) of the swing arm (40) in the length direction (C2).
The electric vehicle according to claim 15, wherein the swing shaft (41) is provided adjacent to the motor case (43b). The electric vehicle according to claim 15 or 16, wherein the electric motor (30) is arranged above the swing arm (40). The electrical component (130) housed in the electrical component storage unit (76) is
A power control unit (120) that controls the electric motor (30) and
A down regulator (126) that steps down the output voltage from the battery (100), and
The electric vehicle according to any one of claims 1, 11 to 17, further comprising a junction box (123) for connecting the battery (100), the power control unit (120), and the down regulator (126). The battery (100) is provided with a battery connection terminal (101d, 102d) on one end side in the length direction.
The junction box (123) is arranged closer to the battery connection terminals (101d, 102d) than the central portion (101e, 102e) in the length direction of the battery (100) in the length direction of the battery (100). The electric vehicle according to claim 18.

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