JP2008239067A - Automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automobile provided with a battery pack supported by a support member by simple structure. <P>SOLUTION: This automobile is provided with the battery pack 1 including storage batteries, and a cross member 51 for supporting the battery pack 1. The battery pack 1 includes a case 20 for the storage batteries. The case 20 has a lower case 22 for supporting the storage batteries from a downside. The lower case 22 has an extended part 29 extending in the longitudinal direction of a vehicle body outside of an area where the storage batteries are arranged. The extended part 29 is formed at the end on each side of the lower case 22. The extended part 29 of the lower case 22 is supported by the cross member 51. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automobile. In particular, the present invention relates to an automobile provided with a power storage pack including power storage devices.

  In recent years, an electric vehicle using an electric motor as a drive source and a so-called hybrid electric vehicle combining an electric motor and another drive source have been put into practical use. In such an automobile, a power storage device for supplying electricity as energy to the electric motor is mounted. As the power storage device, for example, a nickel-cadmium battery, a nickel-hydrogen battery, a lithium ion battery, or the like is used, and a secondary battery or a capacitor that can be repeatedly charged and discharged is used. The power storage device is housed in a case and mounted on the vehicle body as a power storage pack.

Japanese Patent Application Laid-Open No. 7-37566 discloses a battery clamping device that is positioned in a planar manner by mounting a battery with a shallow box-type battery case attached to a part of the body of an industrial vehicle. Yes. The battery clamping device includes an engaging portion that is elastically attached to the inner surface of the engine hood directly or via a spring, and the engaging portion is engaged with the engine hood to be engaged when the engine hood is closed. It is disclosed that the portion abuts on the upper surface of the battery to restrain the battery, and that the engaging portion releases the battery when the engine hood is opened.
JP 7-37566 A

  In an electric vehicle or a hybrid electric vehicle, a battery pack including a power storage device is fixed to the vehicle body. Since the electricity storage pack is heavy, it may be supported by a highly rigid support member. When the shape and size of the electricity storage pack do not match the position of the support member, a bracket is disposed on the electricity storage pack and is supported by the support member via the bracket. That is, a bracket for connecting to the vehicle body is used to fix the electricity storage pack to the vehicle body.

  An object of this invention is to provide a motor vehicle provided with the electrical storage pack currently supported by the support member by simple structure.

  The automobile of the present invention includes a power storage pack including a power storage device for storing electricity, and a support member for supporting the power storage pack. The power storage pack includes a case of the power storage device. The case includes a lower member for supporting the power storage device from the lower side. The lower member has an extending portion extending in the one direction outside an area where the power storage device is disposed. The extending portion is formed at both ends of the lower member in the one direction. As for the said lower side member, the said extension part is supported by the said supporting member.

  In the present invention, preferably, the lower member has a concave portion having a U-shaped cross section when cut along the one direction.

  In the present invention, preferably, the support member includes a cross member extending in the width direction of the vehicle body. The electricity storage pack is arranged such that the one direction is the front-rear direction of the vehicle body. The electricity storage pack has ends on both sides in the one direction fixed to the cross member.

In the above invention, preferably, the electricity storage pack is disposed below the seat.
In the above invention, preferably, a plurality of rows of seats are provided. The power storage pack is arranged on the rear side of the seat arranged on the rearmost side among the plurality of rows of seats.

  In the above invention, preferably, a plurality of rows of seats are provided. The plurality of rows of seats include a first seat and a second seat arranged in the width direction of the vehicle body. The power storage pack is disposed between the first seat and the second seat.

  ADVANTAGE OF THE INVENTION According to this invention, a motor vehicle provided with the electrical storage pack currently supported by the support member by simple structure can be provided.

(Embodiment 1)
The automobile in the first embodiment will be described with reference to FIGS. The automobile in the present embodiment is a hybrid automobile provided with a power storage pack.

  Power storage devices such as secondary batteries and capacitors are housed in cases and mounted on automobiles. In the present invention, a device including a case and a power storage device housed in the case is referred to as a power storage pack. The power storage pack may include other internal components. Other internal components include, for example, a cooling device for cooling a power storage device such as a cooling duct or a cooling fan, or an electric device for converting electric power.

  FIG. 1 is a first schematic cross-sectional view of an automobile in the present embodiment. FIG. 1 is a schematic cross-sectional view of the rear part of the vehicle body taken along a horizontal plane. The automobile in the present embodiment is a so-called sedan type automobile. An arrow 99 indicates the front direction of the vehicle body. The automobile includes a body 61. A rear wheel 60 is disposed at the rear of the vehicle body.

  The automobile in the present embodiment includes a battery pack 1 as a power storage pack. The battery pack 1 is disposed at the rear part of the vehicle body. The battery pack 1 has a longitudinal direction and is arranged so that the longitudinal direction is substantially parallel to the width direction of the vehicle body. The battery pack 1 includes a case 20. A storage battery as a power storage device is disposed inside the case 20. Case 20 in the present embodiment is formed of iron. The case of the electricity storage pack is not limited to this form, and can be formed of any material.

  The automobile in the present embodiment includes a floor member 52 as a floor member constituting the floor surface of the passenger compartment. The floor member 52 is formed in a plate shape. Floor member 52 in the present embodiment constitutes a floor surface of a luggage compartment (trunk room) in addition to the floor surface of the passenger compartment.

  The automobile in the present embodiment includes a support member for supporting battery pack 1. The support member in the present embodiment constitutes a part of the skeleton of the vehicle body. The support member includes a side member (side frame) 50. The side members 50 are arranged at both end portions in the width direction of the vehicle body. The side member 50 is formed to extend in the front-rear direction of the vehicle body.

  The support member in the present embodiment includes a cross member 51. The cross member 51 is formed to extend in the width direction of the vehicle body. The cross member 51 fixes the side members 50 to each other. The cross member 51 is formed so as to bridge the side members 50. The two cross members 51 in the present embodiment are arranged such that portions extending from each other are substantially parallel.

  The floor member 52 is disposed above the side member 50 and the cross member 51. The floor member 52 is disposed so as to straddle between the side members 50 disposed on both sides in the width direction of the vehicle body. Floor member 52 in the present embodiment is supported by a support member.

  The battery pack 1 is supported by the cross member 51 through the floor member 52 at the front end. The battery pack 1 is supported by the cross member 51 via the floor member 52 at the rear end. In battery pack 1 in the present embodiment, both ends in the front-rear direction are supported by cross member 51.

  The battery pack 1 in the present embodiment is fixed to the floor member 52 with bolts 72 as fastening members. As a fastening member of the battery pack 1, a bolt and a nut may be used, a screw hole may be formed in the cross member, and the bolt may be screwed into the screw hole. Any fastening member can be used as the fastening member.

  FIG. 2 shows an exploded perspective view of the battery pack in the present embodiment. The battery pack 1 in the present embodiment includes a storage battery 25 as a power storage device. Storage battery 25 includes a plurality of battery cells 25a. The battery cells 25a are arranged side by side so as to be stacked. The case 20 of the battery pack 1 is formed in a box shape. The case 20 includes an upper case 21 as an upper member. The case 20 includes a lower case 22 as a lower member.

  A storage battery 25 is disposed on the upper surface of the lower case 22. Lower case 22 is formed to support storage battery 25 from below. The lower case 22 in the present embodiment is formed so that the cross-sectional shape is a U-shape. The storage battery 25 is disposed on the bottom surface of the recessed portion. The upper case 21 is formed so as to cover the storage battery 25.

  Referring to FIGS. 1 and 2, upper case 21 has screw holes 21 a at the front end portion and the rear end portion. The lower case 22 has a screw hole 22a on the bottom surface of the recessed portion. Screw holes 22a are formed at the front end and the rear end of the recessed portion. The screw hole 22a is formed at a position corresponding to the screw hole 21a. The upper case 21 and the lower case 22 are fixed by inserting the bolts 71 into the screw holes 21a and 22a.

  The lower case 22 in the present embodiment is formed in a plate shape. The lower case 22 has an extending portion 29. The extending part 29 is formed so as to extend outwardly outside the region where the storage battery 25 is disposed. The extending portion 29 in the present embodiment is formed so as to extend in the front-rear direction of the vehicle body.

  The lower case 22 has screw holes 22b at the front end and the rear end. The screw hole 22 b is formed in the extending portion 29. The lower case 22 is fixed to the floor member 52 by inserting the bolts 72 into the screw holes 22b.

  FIG. 3 shows a second schematic cross-sectional view of the automobile in the present embodiment. FIG. 3 is a schematic cross-sectional view when the rear portion of the vehicle body is cut by a plane extending in the vertical direction. The automobile in the present embodiment includes a plurality of rows of seats. The rear seat 62 is the rearmost seat. The rear seat 62 is supported by the floor member 52.

  A partition panel 63 is disposed on the rear side of the rear seat 62. A partition panel 63 partitions a passenger compartment and a trunk room 64 as a luggage compartment. Battery pack 1 in the present embodiment is arranged in trunk room 64. The battery pack 1 is disposed on the rear side of the rear seat 62. The battery pack 1 is supported so as to be substantially horizontal when viewed from the side.

  In the battery pack 1, the extending portion 29 is supported by the cross member 51. The extending portion 29 is supported by the cross member 51 via the floor member 52.

  Floor member 52 in the present embodiment has a recess 52a. The recessed portion 52 a is formed to correspond to the recessed portion of the lower case 22 of the case 20. Battery pack 1 in the present embodiment is fixed to floor member 52 by bolts 72 and nuts 75 as fastening members. The fastening member in the present embodiment is disposed in a region where the cross member 51 is disposed.

  Since the battery pack 1 is heavy, it is preferable that the battery pack 1 is supported by a highly rigid support member such as a cross member or a side member. When the position of the support member does not correspond to the shape of the battery pack, a connection component such as a bracket is required to support the battery pack with the support member. In the battery pack 1 according to the present embodiment, since the extending part 29 is formed in the lower case 22, the extending part 29 can be supported by the cross member 51. For this reason, the battery pack 1 can be supported with a simple configuration without using another connection component such as a bracket. Further, the battery pack 1 can be fixed to the floor member 52 in the region where the cross member 51 is disposed.

  In the present embodiment, another device can be arranged on the upper side of the extending portion 29 of the lower case 22. For example, an electrical device such as a duct or a DC / DC converter for blowing cooling air to the power storage device can be disposed on the front side of the upper case 21.

  The battery pack according to the present embodiment can be easily implemented by changing the shape of the lower case. That is, it can be easily implemented by forming the lower case in consideration of the shape of the existing upper case and the arrangement of the cross members of the vehicle body.

  The lower case in the present embodiment has a concave portion whose cross-sectional shape is formed in a U shape, and the power storage device is disposed in the concave portion. With this configuration, when the battery pack is attached to the vehicle body, the height of the battery pack can be reduced. As a result, the occupied space of the room in which the electricity storage pack is arranged can be reduced. For example, when the battery pack is arranged in a luggage compartment, the battery pack can be arranged low and the luggage compartment can be enlarged.

  In the present embodiment, the lower case is formed to have a U-shaped cross section. However, the present invention is not limited to this form, and the lower case may have any shape. For example, the lower case may be formed in a flat plate shape.

  The battery pack according to the present embodiment is arranged in the hollow portion formed in the floor member, but is not limited to this form, the floor member is formed in a flat shape, and the battery pack is arranged in the flat portion. It does not matter.

  In the present embodiment, the longitudinal end of the vehicle body as one direction is supported by the cross member. However, the present invention is not limited to this configuration, and any direction can be adopted as one direction. . For example, the battery pack may be formed such that the lower case extends in the width direction of the vehicle body, and the lower case may be supported by the side member.

  The battery pack in the present embodiment is fixed to the floor member, but is not limited to this form, and the battery pack may be fixed to a support member such as a cross member or a side member.

  In the present embodiment, a hybrid car is taken as an example of the car, but the present invention is not limited to this form, and the present invention can be applied to any car provided with a power storage pack.

(Embodiment 2)
With reference to FIG. 4, the automobile in the second embodiment will be described. The automobile in the present embodiment is a hybrid automobile provided with a power storage pack.

  FIG. 4 is a schematic cross-sectional view of the automobile in the present embodiment. FIG. 4 is a schematic cross-sectional view when the rear portion of the vehicle body is cut by a plane extending in the vertical direction. The automobile in the present embodiment includes a battery pack 1, and the battery pack 1 is disposed below the rear seat 62.

  The automobile in the present embodiment includes a floor member 54 as a floor member. The floor member 54 has a recess 54a. The recessed portion 54 a is disposed below the rear seat 62. The battery pack 1 is disposed in the recessed portion 54a.

  The automobile in the present embodiment has a cross member 53 as a support member. The cross member 53 is disposed below the rear seat 62. The cross member 53 is disposed below the front end of the rear seat and below the rear end. The battery pack 1 in the present embodiment is fixed to the cross member 53 by bolts 72 as fastening members. The bolt 72 passes through the floor member 54 and is fixed to the cross member 53. The battery pack 1 is fixed to the cross member 53 with the floor member 54 interposed therebetween.

  Battery pack 1 includes a case 20. The case 20 has an upper case 21 and a lower case 22. The lower case 22 has an extending portion 29 formed to extend in the front-rear direction of the vehicle body. The extending portion 29 is supported by the cross member 53. In the case 20, the extending portion 29 is fixed to the cross member 53 by a bolt 72.

  Also in the automobile in the present embodiment, the battery pack can be supported by the support member without using the connection member for connecting the battery pack and the support member.

  In the present embodiment, the battery pack is disposed below the rear seat as the seat, but the present invention is not limited to this configuration, and the present invention is applied to the battery pack disposed below any seat. be able to.

  Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof will not be repeated here.

(Embodiment 3)
With reference to FIG. 5 to FIG. 7, the automobile in the third embodiment will be described. The automobile in the present embodiment is a hybrid automobile provided with a power storage pack.

  FIG. 5 shows a first schematic cross-sectional view of the automobile in the present embodiment. FIG. 5 is a schematic cross-sectional view when cut in the width direction of the vehicle body at a portion in front of the driver seat and the passenger seat. FIG. 5 is a schematic cross-sectional view when viewed from the front side to the rear side of the vehicle body.

  The automobile in the present embodiment includes a plurality of rows of seats. The automobile in the present embodiment includes a driver seat 31 as a first seat and a passenger seat 32 as a second seat. The driver's seat 31 and the passenger seat 32 are arranged in the foremost row among a plurality of rows of seats. The driver seat 31 and the passenger seat 32 are arranged side by side in the width direction of the vehicle body indicated by an arrow 98.

  The driver's seat 31 and the passenger seat 32 are fixed to a floor member 57 as a floor member. The driver seat 31 and the passenger seat 32 each have a leg portion 33. The leg portion 33 is fixed to the floor member 57.

  The automobile in the present embodiment includes a battery pack 3 as a power storage pack. Battery pack 3 includes a case 26 and a power storage device disposed inside case 26. The battery pack 3 is disposed between the driver seat 31 and the passenger seat 32. The battery pack 3 is fixed to the floor member 57. The battery pack 3 is disposed on the upper side of the floor member 57. Floor member 57 in the present embodiment includes a recessed portion 57a. The battery pack 3 is disposed in the recess 57a.

  FIG. 6 shows a second schematic cross-sectional view of the automobile in the present embodiment. FIG. 6 is a schematic cross-sectional view when the automobile in the present embodiment is cut into a horizontal plane. FIG. 6 is a schematic cross-sectional view of a driver seat and a passenger seat. FIG. 7 shows a third schematic cross-sectional view of the automobile in the present embodiment. FIG. 7 is a schematic cross-sectional view of the passenger seat section cut along a plane extending in the vertical direction.

  6 and 7, arrow 99 indicates the front side of the vehicle body. The battery pack 3 has a longitudinal direction and is arranged such that the longitudinal direction is the front-rear direction of the vehicle body. The battery pack 3 in the present embodiment includes a case 26. The case 26 includes a lower case 28. The case 26 includes an upper case 27. The lower case 28 has an extending portion 30. In the battery pack 3, the extending portion 30 is supported by the cross member 56. The lower case 28 is formed so as to bridge the two cross members 56.

  The automobile in the present embodiment includes a side member 55 and a cross member 56 formed so as to connect the side members 55 to each other. The cross member 56 in the present embodiment is disposed below the driver seat 31 and the passenger seat 32. The automobile in the present embodiment includes two cross members 56. In the battery pack 3, the extending portion 30 is fixed to the cross member 56 by a bolt 73 as a fastening member.

  Also in the automobile in the present embodiment, the power storage pack can be supported by the support member without using a connection member such as a bracket.

  In the present embodiment, the battery pack is arranged on the surface of the floor member so that the battery pack is exposed. However, the present invention is not limited to this form, and for example, a box-like shape is provided between the driver seat and the passenger seat. A console may be arranged, and a battery pack may be arranged inside the console.

  Since other configurations, operations, and effects are the same as those in the first embodiment, description thereof will not be repeated here.

  In the respective drawings described above, the same or corresponding parts are denoted by the same reference numerals.

  In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

1 is a first schematic cross-sectional view of an automobile in a first embodiment. 3 is a schematic exploded perspective view of the battery pack according to Embodiment 1. FIG. 4 is a second schematic cross-sectional view of the automobile in the first embodiment. FIG. 6 is a schematic cross-sectional view of an automobile in a second embodiment. FIG. FIG. 6 is a first schematic cross-sectional view of an automobile in a third embodiment. FIG. 10 is a second schematic cross sectional view of the automobile in the third embodiment. FIG. 10 is a third schematic cross sectional view of the automobile in the third embodiment.

Explanation of symbols

  1, 3 battery pack, 20, 26 case, 21, 27 upper case, 21a screw hole, 22, 28 lower case, 22a, 22b screw hole, 25 storage battery, 25a battery cell, 29, 30 extension, 31 driver's seat, 32 Passenger seat, 33 Leg, 50, 55 Side member, 51, 53, 56 Cross member, 52, 54, 57 Floor member, 52a, 54a, 57a Recessed part, 60 Rear wheel, 61 Body, 62 Rear seat, 63 Partition panel, 64 trunk room, 71-73 volts, 75 nuts, 98, 99 arrows.

Claims (6)

An electricity storage pack including an electricity storage device for storing electricity;
A support member for supporting the electricity storage pack,
The electricity storage pack includes a case of the electricity storage device,
The case has a lower member for supporting the power storage device from the lower side,
The lower member has an extending portion extending in the one direction outside the region where the power storage device is disposed,
The extending portion is formed at both ends of the lower member in the one direction,
The lower member is an automobile in which the extending portion is supported by the support member.   2. The automobile according to claim 1, wherein the lower member has a recess having a U-shaped cross-section when cut along the one direction. The support member includes a cross member extending in the width direction of the vehicle body,
The electricity storage pack is disposed such that the one direction is a front-rear direction of the vehicle body,
The automobile according to claim 1, wherein the power storage pack has end portions on both sides in the one direction fixed to the cross member.   The automobile according to any one of claims 1 to 3, wherein the electricity storage pack is disposed below a seat. With multiple rows of seats,
The automobile according to any one of claims 1 to 3, wherein the electricity storage pack is arranged on the rear side of a seat arranged on the rearmost side among the plurality of rows of seats. With multiple rows of seats,
The plurality of rows of seats include a first seat and a second seat arranged in the width direction of the vehicle body,
The automobile according to any one of claims 1 to 3, wherein the power storage pack is disposed between the first seat and the second seat.

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