CN106321744A - Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof - Google Patents
Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof Download PDFInfo
- Publication number
- CN106321744A CN106321744A CN201610969077.9A CN201610969077A CN106321744A CN 106321744 A CN106321744 A CN 106321744A CN 201610969077 A CN201610969077 A CN 201610969077A CN 106321744 A CN106321744 A CN 106321744A
- Authority
- CN
- China
- Prior art keywords
- gear
- motor
- power
- output shaft
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention provides a dual-motor two-gear speed changing box for an electric vehicle and a gear-shifting control method thereof. The two-gear speed changing box consists of two coaxially arranged motors and one two-gear mechanical and automatic speed changing box, wherein the mechanical and automatic speed changing box comprises two input shafts, one output shaft, a first-gear gear pair, a second-gear gear pair and a gear-shifting combination sleeve, the two motors are respectively connected with the two input shafts, a large first-gear gear is installed on the output shaft through a one-way bearing and performs one-way torque transfer, and a small second-gear gear is a parallelly-connected gear fixedly connected to the second input shaft and corresponds to the gear-shifting combination sleeve connected to the first input shaft in a sleeving mode so as to achieve gear-shifting actions. The gear-shifting control method comprises the steps that two advance gears and one reverse gear are provided, and shifting between the two advance gears including a low-speed gear and a high-speed gear can be achieved by controlling the gear-shifting combination sleeve under the effect of the one-way bearing. The dual-motor two-gear speed changing box is simple in mechanical mechanism and good in accelerating and climbing capability, and the problem of power interruption in the gear-shifting process is effectively solved.
Description
Technical field
The invention belongs to electric vehicle drive technology field, be specifically related to a kind of electric motor car bi-motor two keep off change speed gear box and
Its shift control method.
Background technology
How to reduce the important directions that the dependence to traditional energy forms such as oil is modern automobile industry development.In recent years
Under national policy is supported, China's pure electric automobile quickly grows, and multiple enterprises the most commercially release the pure electronic vapour of many moneys
Car, pure electric automobile comes into industrialization.
The drive form of pure electric automobile has a variety of, and the list gear of what pure electric automobile was conventional now is no-clutch directly drives
Form, two independent electric motors and the fixing gear actuating device with drive shaft.This drive form i.e. motor is directly by solid
Constant-speed ratio deceleration device drives wheel, has the advantage that transmission irregularity is good, but the highest to the performance requirement of dynamo battery, car
Acceleration, climbing capacity be poor and motor inefficient.Also having a kind of typical drive form is that configuration keeps off transmission more
The conventional ADS driving system of device and clutch, has acceleration good, and climbing capacity is strong and motor operational efficiency advantages of higher, but passes
There is the problem of power interruption in system mechanical automatic gearbox in shift process, affects the ride comfort that vehicle travels.
Different from internal combustion engine, the high-efficiency operation interval of motor is wider.Therefore, pure electric vehicle is to gearbox-gear number requirement
Seldom, two gears are appropriate gear.And, transmission efficiency and gearshift variable block comfortableness to change speed gear box require higher.At present
Transmission scheme without the speed change of shifting power interruption has infinitely variable transmission CVT, dual-clutch transmission DCT etc., these sides
Case employing wet clutch or transmission band, not only complicated in mechanical structure, relatively costly, and also self transmission efficiency is relatively low.
Chinese invention patent (CN103939535 B) discloses a kind of electric motor car bi-motor two shift transmission and changes
Gear control method, by the combination of three gearshift combined covers, the power output for bi-motor provides two forward range and
Individual position of reversing gear.And in shift process, utilize bi-motor to provide power-assisted in turn, it is achieved power failure-free in shift process.But
It is the use of three combined covers, not only makes its frame for movement complex, and control process of shifting gears needs to take turns flow control three
Individual combined cover, shift time is longer and control action is complicated.
Chinese invention patent (CN105864368 A) discloses a kind of electric motor car power failure-free manual transmission and
Shift control method, is provided by the power output being coupled as singly driving motor of controllable overrunning clutch and dry clutch
Two forward range and a position of reversing gear.The principle utilizing clutch sliding wear provides power-assisted in shift process, it is achieved gearshift
Process power failure-free.But the use controlling gear mesh and dry clutch in controllable overrunning clutch makes its machinery
Structure is complex, and volume is relatively big, relatively costly.
Summary of the invention
The invention provides a kind of electric motor car bi-motor two and keep off change speed gear box and shift control method thereof, to solve existing skill
In art, electric vehicle gear box mechanical mechanism is complicated, accelerate, climbing capacity poor, and shift process exist power interruption etc. ask
Topic.In conjunction with Figure of description, the present invention is achieved by the following technical solutions:
A kind of electric motor car bi-motor two keeps off change speed gear box, by two motors and one two gear mechanical automatic gearbox 2 groups
Becoming, described mechanical automatic gearbox 2 includes that first power shaft the 4, second power shaft 7, output shaft 12, keep off little gear 3 and
The first gear of gear gear wheel 10 engagement composition to the second gear of, two little gears of gear 6 and two gear gear wheels 9 engagement compositions to
And gearshift combined cover 5；
First motor 1 is coaxially oppositely arranged with the second motor 8, and the first power shaft 4 coaxially connects with the first motor 1
Connecing, the second power shaft 7 is coaxially connected with the second motor 8；
One gear gear wheel 10 is arranged on output shaft 12 by unilateral bearing 11, unidirectional delivery moment of torsion, a gear gear wheel 10
With little gear 3 engaged transmission of gear being arranged on the first power shaft 4；
The two little gears 6 of gear are combination gear, are connected on the second power shaft 7, and two keep off the large diameter gear of little gears 6 with connected
On output gear 12 two gear large diameter gear 9 engaged transmission, two keep off little gears 6 small-diameter gear end be socketed in the first input
Gearshift combined cover 5 on axle 4 is corresponding, realizes gear shifting action by engaging with gearshift combined cover 5 or separate.
A kind of electric motor car bi-motor two keeps off the shift control method of change speed gear box, and two gear mechanical automatic gearboxes 2 are
Power output provides two forward range and a position of reversing gear, under the effect of unilateral bearing 11, by controlling gearshift combined cover 5
Keep off the joint between little gear 6 with two or separate, bottom gear and the conversion of two forward gears of top gear can be realized, wherein:
The shift control method rising to top gear from bottom gear is as follows:
Step one: change speed gear box is operated in bottom gear pattern, the first motor 1 power exported is successively through the first power shaft
4, after a gear little gear 3, a gear gear wheel 10, unilateral bearing 11, the output shaft 12 of change speed gear box export, by the second motor 8
The power of output after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9, is exported by the output shaft 12 of change speed gear box successively；
Step 2: reducing the rotating speed of the first motor 1, the rotating speed of a gear gear wheel 10 is less than output shaft 12, the most unidirectional
Bearing 11 dallies, and a gear gear wheel 10 cannot be by being transferred to output shaft 12 from the power of the first motor 1, by the second motor
After the power of 8 outputs still keeps off little gear 6, two gear gear wheel 9 via the second power shaft 7, two, defeated by the output shaft 12 of change speed gear box
Go out；
Step 3: adjust the rotating speed of the first motor 1, handles gearshift combined cover 5 and is combined with the two little gears 6 of gear, change speed gear box
Rising most top gear pattern, now the rotating speed of a gear gear wheel 10 is still below the rotating speed of output shaft 12, and now unilateral bearing 11 is empty
Turning, a gear gear wheel 10 cannot will be transferred to output shaft 12 from the power of the first motor 1, the first motor 1 export
Power successively after the first power shaft 4, gearshift combined cover 5, the two little gear of gear 6 keep off gear wheels 9 with two by the output shaft of change speed gear box
12 output, the second motor 8 power exported successively through second power shaft 7, two keep off little gear 6, two gear gear wheel 9 after, by
The output shaft 12 of change speed gear box exports；
The shift control method being down to bottom gear from top gear pattern is as follows:
Step one: change speed gear box is operated in top gear pattern, now rotating speed the turning less than output shaft 12 of a gear gear wheel 10
Speed, unilateral bearing 11 dallies, and a gear gear wheel 10 cannot will be transferred to output shaft 12 from the power of the first motor 1, by the
The power of one motor 1 output successively after the first power shaft 4, gearshift combined cover 5, the two little gear of gear 6 keep off gear wheels 9 with two by
The output shaft 12 of change speed gear box exports, the second motor 8 power exported keeps off little gear 6, two through the second power shaft 7, two successively
Exported by the output shaft 12 of change speed gear box after gear gear wheel 9；
Step 2: handling gearshift combined cover 5 and separate with the two little gears 6 of gear, now the rotating speed of a gear gear wheel 10 is less than defeated
The rotating speed of shaft 12, unilateral bearing 11 dallies, and the power from the first motor 1 cannot be transferred to output by a gear gear wheel 10
Axle 12, the second motor 8 power exported is the most successively via the second power shaft 7, the two little gear of gear 6 and two gear gear wheels 9
After, the output shaft 12 of change speed gear box export；
Step 3: raise the rotating speed of the first motor 1, when the rotating speed of a gear gear wheel 10 reaches the rotating speed of output shaft 12
Time, unilateral bearing 11 unidirectional delivery power, a gear gear wheel 10 will be transferred to output shaft 12 from the power of the first motor 1,
Now change speed gear box is operated in bottom gear pattern, the first motor 1 power exported keeps off little tooth through the first power shaft 4, successively
Exported by the output shaft 12 of change speed gear box after wheel 3, a gear gear wheel 10, unilateral bearing 11, the second motor 8 the power warp exported
After second power shaft 7, the two little gear of gear 6 and two gear gear wheels 9, the output shaft 12 of change speed gear box export.
A kind of electric motor car bi-motor two keeps off the shift control method of change speed gear box, and wherein, electric motor car bi-motor two gear becomes
The control method of reversing gear of speed case is as follows:
Handle gearshift combined cover 5 to separate with the two little gears 6 of gear, adjust the second motor 8 and invert, now by the second motor
The power of 8 outputs is successively after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9, defeated by the output shaft 12 of change speed gear box
Go out, control the first motor 1 simultaneously and invert, and adjust its rotating speed and make the reverse speed of a gear gear wheel 10 more than output shaft 12
Reverse speed, unilateral bearing 11 dallies, first gear to do not interfere reverse gear power transmission.
A kind of electric motor car bi-motor two keeps off the shift control method of change speed gear box, and described shift control method also includes braking
The control method of energy regenerating, detailed process is as follows:
When vehicle travels in bottom gear pattern, driver makes braking maneuver, the first motor 1 and the second motor 8
No longer driving, the power now inputting change speed gear box is defeated via output shaft 12, two gear gear wheel 9, the two little gear 6, second of gear successively
Entering axle 7, Brake energy recovery is to the second motor 8, and meanwhile, gear gear wheel 10 rotating speed is less than output shaft 12 rotating speed, single
Dallying to bearing 11, brake force cannot be transferred to a gear gear wheel 10 by output shaft 12, and it is electronic that braking energy is not recycled to first
Machine 1；
When vehicle travels in top gear pattern, driver makes braking maneuver, the first motor 1 and the second motor 8
No longer drive, now input power one tunnel of change speed gear box successively via output shaft 12, two gear gear wheel 9, two keep off little gear 6, the
Two power shafts 7, Brake energy recovery is to the second motor 8；Another road keeps off little gear via output shaft 12, two gear gear wheel 9, two
6, gearshift combined cover 5 and the first power shaft 4, Brake energy recovery is to the first motor 8, meanwhile, a gear gear wheel 10 turns
Speed is less than output shaft rotating speed, and unilateral bearing 11 dallies, and brake force cannot be transferred to a gear gear wheel 10, a gear tooth by output shaft 12
Take turns will not interfere with power transmission.
Compared with prior art, the beneficial effects of the present invention is:
1, for the present invention is compared to directly driving type of belt drive, improve acceleration capacity and climbing capacity, it is possible to effectively utilize
The efficient operation of motor is interval, increases running distance of eletric vehicles.
2, power failure-free in shift process of the present invention, and only need to handle the joint of one combined cover of control or separate
Realizing gear shifting action, gearshift control action is simple and reliable.Need not single lock unit actuator, greatly simplifie machinery
Structure, has low cost, the feature that lightweight, reliability is high.
3, the present invention directly can rotate backward realization by the second motor and reverses gear, and need not be further added by the extra machine that reverses gear
Structure.
4, the present invention can be braked energy regenerating when braking, vehicle travels the kinetic energy produced and is converted into when braking
Part electric energy.The energy loss of battery can be reduced, reduce use cost, extending driving range.
5, the present invention uses gear train transmission, has the advantage that drive system efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of electric motor car bi-motor two of the present invention keeps off change speed gear box；
Fig. 2 is the first gear unilateral bearing installation direction explanation schematic diagram to connecting gear wheel and output shaft in mechanism；
Fig. 3 is that electric motor car bi-motor two keeps off change speed gear box gearshift combined cover view under bottom gear pattern；
Fig. 4 is that electric motor car bi-motor two keeps off change speed gear box power transmission line schematic diagram under bottom gear pattern；
Fig. 5 is that electric motor car bi-motor two keeps off change speed gear box gearshift combined cover view under top gear pattern；
Fig. 6 is that electric motor car bi-motor two keeps off change speed gear box power transmission line schematic diagram under top gear pattern；
Fig. 7 is that electric motor car bi-motor two keeps off change speed gear box gearshift combined cover view under reverse mode；
Fig. 8 is that electric motor car bi-motor two keeps off change speed gear box power transmission line schematic diagram under reverse mode；
Fig. 9 is that electric motor car bi-motor two keeps off change speed gear box power transmission line schematic diagram in shift process；
Figure 10 is that electric motor car bi-motor two keeps off change speed gear box power transmission line of energy regenerating when bottom gear is braked and shows
It is intended to；
Figure 11 is that electric motor car bi-motor two keeps off change speed gear box power transmission line of energy regenerating when top gear is braked and shows
It is intended to.
In figure:
1-the first motor, 2-two keeps off mechanical automatic gearbox, and 3-mono-keeps off little gear, 4-the first power shaft,
5-shifts gears combined cover, and 6-bis-keeps off little gear, 7-the second power shaft, 8-the second motor,
9-bis-keeps off gear wheel, and 10-mono-keeps off gear wheel, 11-unilateral bearing, 12-output shaft.
Detailed description of the invention
Hereinafter, referring to the drawings, specific embodiment party when technical solution of the present invention is applicable to electric vehicle is explained
Formula, and its work process is further described.
As it is shown in figure 1, the invention provides a kind of electric motor car bi-motor two to keep off change speed gear box, including two motor: the
One motor 1 and the second motor 8, and one two gear mechanical automatic gearbox 2.Described mechanical automatic gearbox 2 wraps
Include first power shaft the 4, second power shaft 7, the little gear of output shaft 12, gear 3 and a gear tooth of a gear gear wheel 10 engagement composition
Take turns the second gear to, two little gears of gear 6 and two gear gear wheels 9 engagement compositions to and gearshift combined cover 5.
Wherein, first power shaft the 4, second power shaft 7, the output shaft 12 shell by bearing with mechanical automatic gearbox 2
Body is connected.Power output shaft and first power shaft 4 of the first motor 1 are coaxially connected, the power output shaft of the second motor 8 with
Second power shaft is coaxially connected.First motor 1 is coaxially disposed with the second motor 8.First motor 1 and the second motor 8
Power input portion as mechanical automatic gearbox 2.Defeated through output shaft 12 via the power after mechanical automatic gearbox 2
Go out to drive electric vehicle to travel.
First gear centering, one keeps off little gear 3 is arranged on the stage casing of the first power shaft 4, connects transmission, a gear by spline
Gear wheel 10 is arranged on output shaft 12 by unilateral bearing 11 and is connected by meshing transmission with a little gear 3 of gear.Gearshift combined cover 5 overlaps
It is contained in the tail end of the first power shaft 4.Second gear centering, two keep off little gear 6 is arranged on the second power shaft 7, by spline even
Connecing transmission, two gear large diameter gears 9 are arranged on output gear 12, connect transmission also by spline.The two little gears 6 of gear are duplex-gear
Wheel, the gearshift combined cover on the small-diameter gear end of the two little gears 6 of gear and the first power shaft is corresponding, can engage with gearshift combined cover
Or separate to realize gear shifting action, when combined cover 5 of shifting gears engages with the two little gears 6 of gear, be equivalent to the first power shaft 4 and two
Keeping off little gear 6 to be connected, gearshift combined cover 5 can transmit torque；When combined cover 5 of shifting gears separates with the two little gears 6 of gear, be equivalent to
First power shaft 4 and two keeps off the little respective self-movement of gear 6, and non-interference, gearshift combined cover 5 does not transmit torque.Two keep off little tooth
The large diameter gear end of wheel 6 is connected by meshing transmission with the two gear gear wheels 9 being arranged on output shaft 12.
When vehicle travels with forward gear, if taking output shaft 12 to clockwise turn to direction of advance (in terms of output shaft end), institute
State unilateral bearing 11 unidirectional delivery power, i.e. when a gear gear wheel 10 rotating ratio output shaft 12 is high, in unilateral bearing 11, with defeated
The connected inner ring of shaft 12 and the outer ring locking being connected with one grade of gear wheel 10, a gear gear wheel 10 passes through unilateral bearing 11 to defeated
Shaft 12 and two gear large diameter gears 9 transmit power, and output shaft 12, gear gear wheel 10, two gear gear wheel 9 all turns clockwise,
As shown in Figure 2 a；When a gear gear wheel 10 rotating ratio output shaft 12 is low, in unilateral bearing 11, the inner ring being connected with output shaft 12
And relative with the outer ring that one grade of gear wheel 10 is connected trackslip, unilateral bearing 11 is equivalent to idle running.One gear gear wheel 10 is relative to defeated
Shaft 12 rotates counterclockwise, and cannot transmit power, does not drive output shaft 12 to rotate, as shown in Figure 2 b.
Therefore, installing and using of unilateral bearing 11 is capable of following functions: when vehicle travels with forward gear, when a gear
When gear wheel 10 rotating speed is not less than output shaft 12 rotating speed, one-way shaft 11 is held locking and transmits power, when one keeps off gear wheel 10 rotating speed
Time lower than output shaft 12 rotating speed, unilateral bearing 11 dallies and does not transmits power；On the contrary, when vehicle travels to reverse gear, when a gear
When gear wheel 10 reverse speed is higher than output shaft 12 reverse speed, unilateral bearing 11 dallies and does not transmits power, when one keeps off gear wheel 10
Unilateral bearing 11 locking transmit power when reverse speed is not higher than output shaft 12 reverse speed.
Keep off the frame for movement of change speed gear box in conjunction with above-mentioned a kind of electric motor car bi-motor two, the present invention also provides for a kind of electricity simultaneously
Motor-car bi-motor two keeps off the shift control method of change speed gear box.In described shift control method, two gear mechanical automatic speed changings
Case 2 provides two forward range and a position of reversing gear for power output.Under the effect of unilateral bearing 11, shifted gears by control
Combined cover 5 keeps off the joint between little gear 6 with two or separates, and can realize the conversion of two forward gears.Two forward range are respectively
For bottom gear and top gear.
As shown in Figure 3, Figure 4, electric motor car bi-motor two of the present invention keeps off change speed gear box control under bottom gear pattern
Method is: gearshift combined cover 5 keeps off little gear 6 with two and separates, and the i.e. first power shaft 4 keeps off little gear 6 with two and separates.First power shaft
4 and second power shaft 7 can individually transmit power to output shaft, be independent of each other.Due to the first motor 1 and the first power shaft
4 connected, the little gears of gear 3 and the first power shaft 4 are connected, and one keeps off little gear 3 engages with a gear gear wheel 10.Therefore, bottom gear
Under state, the power of the first motor 1 via first gear to being delivered to a gear gear wheel 10, and the rotating speed of the first motor 1
Determine the rotating speed of a gear gear wheel 10.Now, the rotating speed adjusting the first motor 1 is the most sufficiently high, turning of a gear gear wheel 10
Speed increases when reaching output shaft rotating speed therewith, unilateral bearing 11 locking, and the power of a gear gear wheel 10 is transferred to output shaft
12.Due to the second motor 8 and the second power shaft 7 be connected, the two little gears of gear 6 are connected with the second power shaft 7, two keep off gear wheels 9
Being connected with output shaft 12, two keep off little gear 6 engages with two gear gear wheels 9.So the power of the second motor 8 output can be by two
Gear gear mesh is directly delivered to output shaft 12.
Power transmission line under bottom gear pattern is: the power exported by the first motor 1 is successively through the first power shaft
4, after a gear little gear 3, a gear gear wheel 10, unilateral bearing 11, output shaft 12 export；By moving that the second motor 8 exports
Power after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9, is exported by output shaft 12 successively.
As shown in Figure 5, Figure 6, electric motor car bi-motor two keeps off change speed gear box control method under top gear pattern and is: gearshift
Combined cover 5 keeps off little gear 6 with two and is combined, and the first power shaft 4 keeps off little gear 6 with two and is combined.Owing to the two little gears 6 of gear are defeated with second
Entering axle 7 to be connected, therefore the first power shaft 4 is connected with the second power shaft 7 coaxial transmission.Again because the two little gears 6 of gear are defeated with second
Entering axle 7 to be connected, two gear gear wheels 9 are connected with output shaft 12, and two keep off little gear 6 engages with two gear gear wheels 9, so the first input
The power of axle 4 and the output of the second power shaft 7 all can by second gear to being directly delivered to output shaft 12, the first power shaft 4 with
Second power shaft 7 transmits power via second gear jointly to being transferred to output shaft 12.And under top gear pattern, the first input
Axle 4, one keeps off little gear 3, the two little gear 6 of gear and the second power shaft 7 has identical rotating speed.Now, due to a little gear of gear 3 with
Two keep off little gear 6 has same rotational speed, and the gear ratio of bottom gear is more than top gear, and therefore, the rotating speed of a gear gear wheel 10 is low
Rotating speed in the two gear gear wheels 9 being connected on output shaft 12.Therefore the rotating speed of a gear gear wheel 10 is less than output shaft 12, now single
To the Internal and external cycle not locking of bearing 11, relatively trackslip and do not transmit power.Therefore, under top gear pattern, first gear is to will not interfere with
Power transmits.
Power transmission line under top gear pattern is: the power exported by the first motor 1 is successively through the first power shaft
4, gearshift combined cover 5, two keeps off after little gear 6 keeps off gear wheels 9 with two and being exported by output shaft 12；By moving that the second motor 8 exports
Power is kept off little gear 6 through the second power shaft 7, two successively and is exported by output shaft 12 after two gear gear wheels 9.
The gearshift work process of two forward gears of elaboration in detail below:
Electric motor car bi-motor two keep off change speed gear box from bottom gear rise to top gear gearshift control process as follows:
Step one: as shown in Figure 4, change speed gear box is operated in bottom gear pattern: the power warp successively exported by the first motor 1
After first power shaft 4, keeps off little gear 3, a gear gear wheel 10, unilateral bearing 11, the output shaft 12 of change speed gear box export；By
The power of two motor 8 outputs is successively after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9, by the output of change speed gear box
Axle 12 exports；
Step 2: as it is shown in figure 9, reduce the rotating speed of the first motor 1, then the rotating speed of a gear gear wheel 10 is less than output shaft
12, now unilateral bearing 11 not locking, unilateral bearing 11 dallies, and a gear gear wheel 10 cannot be by moving from the first motor 1
Power is transferred to output shaft 12；The power exported by the second motor 8 still keeps off little gear 6, two gear via the second power shaft 7, two
After gear wheel 9, the output shaft 12 of change speed gear box export, this shift process power failure-free；
Step 3: the rotating speed adjusting the first motor 1 makes the first power shaft 4 identical with two little gear 6 rotating speeds of gear, now,
Handling gearshift combined cover 5 to be combined with the two little gears 6 of gear, as shown in Figure 6, change speed gear box rises most top gear pattern, and now a gear is big
The rotating speed of gear 10 is still below the rotating speed of output shaft 12, now unilateral bearing 11 not locking, and unilateral bearing 11 dallies, a gear canine tooth
Wheel 10 cannot will be transferred to output shaft 12 from the power of the first motor 1, the first motor 1 power exported is successively through the
One power shaft 4, gearshift combined cover 5, two keep off little gear 6 and are exported by the output shaft 12 of change speed gear box after two gear gear wheels 9；By second
The power of motor 8 output is successively after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9, by the output shaft of change speed gear box
12 outputs.
So far, described electric motor car bi-motor two keeps off change speed gear box and completes bottom gear pattern and rise to the gearshift of top gear pattern
Journey.
Electric motor car bi-motor two keep off change speed gear box from top gear pattern be down to bottom gear gearshift control process as follows:
Step one: as shown in Figure 6, change speed gear box is operated in top gear pattern: now the rotating speed of a gear gear wheel 10 is less than defeated
The rotating speed of shaft 12, therefore unilateral bearing 11 not locking, unilateral bearing 11 dallies, and a gear gear wheel 10 cannot be by electronic from first
The power of machine 1 is transferred to output shaft 12, the first motor 1 power exported successively through the first power shaft 4, gearshift combined cover 5,
Two keep off little gear 6 is exported by the output shaft 12 of change speed gear box after two gear gear wheels 9；The power exported by the second motor 8 is successively
Exported by the output shaft 12 of change speed gear box after the second power shaft 7, two keeps off little gear 6, two gear gear wheel 9；
Step 2: separate with the two little gears 6 of gear as it is shown in figure 9, handle gearshift combined cover 5, now one keep off gear wheel 10
Rotating speed is less than the rotating speed of output shaft 12, therefore unilateral bearing 11 not locking, unilateral bearing 11 dallies, and a gear gear wheel 10 cannot be in the future
Be transferred to output shaft 12 from the power of the first motor 1, the second motor 8 power exported is the most successively via the second input
After the little gear of axle 7, two gear 6 and two gear gear wheels 9, the output shaft 12 of change speed gear box export, it is achieved shift process power failure-free.
Step 3: raising the rotating speed of the first motor 1, the rotating speed of a gear gear wheel 10 increases therewith, when one keeps off gear wheel
When the rotating speed of 10 reaches the rotating speed of output shaft 12, unilateral bearing 11 locking, a gear gear wheel 10 is by moving from the first motor 1
Power is transferred to output shaft 12, and now change speed gear box is operated in bottom gear pattern, as shown in Figure 4, the first motor 1 power exported
Defeated by the output shaft 12 of change speed gear box after the first power shaft 4, keeps off little gear 3, a gear gear wheel 10, unilateral bearing 11 successively
Go out；The power exported by the second motor 8 is after the second power shaft 7, two little gear of gear 6 and two gear gear wheels 9, by change speed gear box
Output shaft 12 exports.
So far, described electric motor car bi-motor two keeps off change speed gear box and completes the gearshift that top gear Mode change is bottom gear pattern
Process.
As shown in Figure 7, Figure 8, electric motor car bi-motor two keeps off change speed gear box control method under reverse mode and is: gearshift knot
Trap 5 is kept off little gear 6 with two and is separated, therefore the first power shaft 4 separates with the two little gears 6 of gear.Adjust the second motor 8 to invert, this
Time reverse mode under power transmission line be: the power exported by the second motor 8 successively through second power shaft 7, two gear little
After gear 6, two gear gear wheel 9, the output shaft 12 of change speed gear box export.Now, also should control the first motor 1 and invert, and adjust
Its rotating speed whole makes the reverse speed reverse speed more than output shaft 12 of a gear gear wheel 10, unilateral bearing 11 not locking, list
It is in idling conditions to bearing 11, does not transmit torque, thus do not interfere power transmission of reversing gear.
As shown in Figure 10, Figure 11, electric motor car dual-motor variable speed case of the present invention also includes the control of Brake energy recovery
Method processed, specific as follows:
When vehicle travels in bottom gear pattern, driver makes braking maneuver, the first motor 1 and the second motor 8
No longer drive.Power transmission line now is: the power of input change speed gear box keeps off gear wheel 9, two via output shaft 12, two successively
Keep off little gear the 6, second power shaft 7, and then dragging the second motor 8 generates electricity.Now, owing to gear gear wheel 10 rotating speed is less than defeated
Shaft 12 rotating speed, unilateral bearing 11 not locking, brake force cannot be transferred to a gear gear wheel 10, and then cannot drag by output shaft 12
Dynamic first motor 1 generates electricity.
When vehicle travels in top gear pattern, driver makes braking maneuver, the first motor 1 and the second motor 8
No longer drive.Power transmission line now is: power one tunnel of input change speed gear box keeps off gear wheel via output shaft 12, two successively
9, two keep off little gear the 6, second power shaft 7, and then dragging the second motor 8 generates electricity；Another road keeps off canine tooth via output shaft 12, two
Wheel 9, the two little gear 6 of gear, shift gears combined cover 5 and the first power shaft 4, and then dragging the first motor 1 generate electricity.Now, a gear is big
Gear 10 rotating speed is less than output shaft rotating speed, and unilateral bearing 11 not locking, brake force cannot be transferred to a gear canine tooth by output shaft 12
Wheel 10, first gear is to will not interfere with power transmission.
The liter downshift action that the present invention provides only can need to be realized, greatly by the joint or separation that control a combined cover
Simplify vehicle shift control structure, gear shifting action easily realizes, and has feature lightweight, that low cost, reliability are high.Simultaneously
Vehicle can be travelled the kinetic energy produced and be converted into part electric energy when car braking.Therefore the present embodiment reduces the production of vehicle
Cost and use cost, improve vehicle economy.Under same battery capacity conditions, extend the continual mileage of electric motor car.
Claims (4)
1. electric motor car bi-motor two keeps off a change speed gear box, by two motors and one two gear mechanical automatic gearbox (2) group
Become, it is characterised in that:
Described mechanical automatic gearbox (2) includes that the first power shaft (4), the second power shaft (7), output shaft (12), a gear are little
Gear (3) and one gear gear wheel (10) engagement composition first gear to, two keep off little gear (6) and two gear gear wheel (9) engage
Composition second gear to and gearshift combined cover (5)；
First motor (1) is coaxially oppositely arranged with the second motor (8), and the first power shaft (4) is coaxial with the first motor (1)
Connecting, the second power shaft (7) is coaxially connected with the second motor (8)；
One gear gear wheel (10) is arranged on output shaft (12) by unilateral bearing (11), unidirectional delivery moment of torsion, a gear gear wheel
(10) with gear little gear (3) engaged transmission being arranged on the first power shaft (4)；
The two little gear of gears (6) are combination gear, are connected on the second power shaft (7), and two keep off the large diameter gear of little gear (6) with solid
Be connected on output gear (12) two gear large diameter gear (9) engaged transmission, two keep off little gear (6) small-diameter gear end be socketed in
Gearshift combined cover (5) on first power shaft (4) is corresponding, dynamic by engaging or separate realization gearshift with gearshift combined cover (5)
Make.
2. an electric motor car bi-motor two keeps off the shift control method of change speed gear box, it is characterised in that:
Two gears mechanical automatic gearbox (2) are that power output provides two forward range and a position of reversing gear, in one-way shaft
Hold under the effect of (11), keep off the joint between little gear (6) with two by controlling gearshift combined cover (5) or separate, can realize low
Speed gear and the conversion of two forward gears of top gear, wherein:
The shift control method rising to top gear from bottom gear is as follows:
Step one: change speed gear box is operated in bottom gear pattern, the first motor (1) power exported is successively through the first power shaft
(4), one keep off little gear (3), gear gear wheel (10), after unilateral bearing (11), the output shaft (12) of change speed gear box export, by the
The power that two motor (8) export is successively after the second power shaft (7), the two little gear of gears (6), two gears gear wheel (9), by speed change
Output shaft (12) output of case；
Step 2: reduce the rotating speed of the first motor (1), the rotating speed of gear gear wheel (10) is less than output shaft (12), now single
Dallying to bearing (11), the power from the first motor (1) cannot be transferred to output shaft (12) by gear gear wheel (10), by
After the power that second motor (8) exports is still via the second power shaft (7), the two little gear of gears (6), two gears gear wheel (9), by
Output shaft (12) output of change speed gear box；
Step 3: adjust the rotating speed of the first motor (1), handles gearshift combined cover (5) and keeps off little gear (6) combination, speed change with two
Case rises most top gear pattern, and now the rotating speed of gear gear wheel (10) is still below the rotating speed of output shaft (12), now one-way shaft
Holding (11) idle running, the power from the first motor (1) cannot be transferred to output shaft (12), by first by gear gear wheel (10)
The power that motor (1) exports is successively through the first power shaft (4), gearshift combined cover (5), the two little gear of gears (6) and two gear canine tooths
Wheel (9) after by change speed gear box output shaft (12) export, the second motor (8) power exported successively through the second power shaft (7),
After two keep off little gear (6), two gears gear wheel (9), the output shaft (12) of change speed gear box export；
The shift control method being down to bottom gear from top gear pattern is as follows:
Step one: change speed gear box is operated in top gear pattern, now rotating speed the turning less than output shaft (12) of gear gear wheel (10)
Speed, unilateral bearing (11) dallies, and gear gear wheel (10) cannot will be transferred to output shaft from the power of the first motor (1)
(12) power, the first motor (1) exported is successively through the first power shaft (4), gearshift combined cover (5), the two little gear of gears (6)
Export by the output shaft (12) of change speed gear box with after two gears gear wheel (9), the second motor (8) power exported is successively through second
Exported by the output shaft (12) of change speed gear box after power shaft (7), the two little gear of gears (6), two gears gear wheel (9)；
Step 2: handling gearshift combined cover (5) and separate with the two little gear of gears (6), now the rotating speed of gear gear wheel (10) is less than
The rotating speed of output shaft (12), unilateral bearing (11) dallies, and gear gear wheel (10) cannot be by the power from the first motor (1)
Be transferred to output shaft (12), the second motor (8) power exported is the most successively via the second power shaft (7), the two little teeth of gear
After wheel (6) keeps off gear wheel (9) with two, the output shaft (12) of change speed gear box export；
Step 3: raise the rotating speed of the first motor (1), when the rotating speed of gear gear wheel (10) reaches the rotating speed of output shaft (12)
Time, unilateral bearing (11) unidirectional delivery power, the power from the first motor (1) is transferred to output by gear gear wheel (10)
Axle (12), now change speed gear box is operated in bottom gear pattern, the first motor (1) power exported is successively through the first power shaft
(4), one keep off little gear (3), gear gear wheel (10), exported by the output shaft (12) of change speed gear box after unilateral bearing (11), by the
The power that two motor (8) export is after the second power shaft (7), the two little gear of gears (6) keep off gear wheel (9) with two, by change speed gear box
Output shaft (12) output.
A kind of electric motor car bi-motor two the most as claimed in claim 2 keeps off the shift control method of change speed gear box, it is characterised in that:
The control method of reversing gear that electric motor car bi-motor two keeps off change speed gear box is as follows:
Handle gearshift combined cover (5) to separate with the two little gear of gears (6), adjust the second motor (8) reversion, now electronic by second
The power that machine (8) exports successively through the second power shaft (7), two keep off little gear (6), two gears gear wheel (9) after, defeated by change speed gear box
Shaft (12) exports, and controls the first motor (1) reversion simultaneously, and adjusts its rotating speed and make reversely turning of a gear gear wheel (10)
Speed dallies more than the reverse speed of output shaft (12), unilateral bearing (11), and first gear is to not interfering power transmission of reversing gear.
4. as described in Claims 2 or 3, a kind of electric motor car bi-motor two keeps off the shift control method of change speed gear box, and its feature exists
In:
Described shift control method also includes the control method of Brake energy recovery, and detailed process is as follows:
When vehicle travels in bottom gear pattern, driver makes braking maneuver, the first motor (1) and the second motor (8)
No longer drive, now input the power of change speed gear box successively via output shaft (12), two gears gear wheel (9), two keep off little gear (6),
Second power shaft (7), Brake energy recovery is to the second motor (8), and meanwhile, gear gear wheel (10) rotating speed is less than output
Axle (12) rotating speed, unilateral bearing (11) dallies, and brake force cannot be transferred to a gear gear wheel (10), Brake Energy by output shaft (12)
Amount is not recycled to the first motor (1)；
When vehicle travels in top gear pattern, driver makes braking maneuver, the first motor (1) and the second motor (8)
No longer drive, now input power one tunnel of change speed gear box successively via output shaft (12), two gears gear wheel (9), the two little gears of gear
(6), the second power shaft (7), Brake energy recovery to the second motor (8)；Another road is via output shaft (12), two gear gear wheels
(9), two keep off little gear (6), gearshift combined cover (5) with the first power shaft (4), Brake energy recovery to the first motor (8), with
This simultaneously, gear gear wheel (10) rotating speed dallies less than output shaft rotating speed, unilateral bearing (11), and output shaft (12) cannot will be braked
Power is transferred to a gear gear wheel (10), and first gear is to will not interfere with power transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969077.9A CN106321744B (en) | 2016-11-04 | 2016-11-04 | The electronic automobile-used bi-motor two of one kind keeping off gearbox and its shift control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610969077.9A CN106321744B (en) | 2016-11-04 | 2016-11-04 | The electronic automobile-used bi-motor two of one kind keeping off gearbox and its shift control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321744A true CN106321744A (en) | 2017-01-11 |
| CN106321744B CN106321744B (en) | 2018-07-17 |
Family
ID=57816425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610969077.9A Active CN106321744B (en) | 2016-11-04 | 2016-11-04 | The electronic automobile-used bi-motor two of one kind keeping off gearbox and its shift control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321744B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018145231A1 (en) * | 2017-02-08 | 2018-08-16 | 南京越博动力系统股份有限公司 | Dual axis, horizontal, pure electric driving force system for use in vehicles |
| CN108679172A (en) * | 2018-07-18 | 2018-10-19 | 樊朝晖 | A kind of coaxial straight line gear |
| CN108980337A (en) * | 2018-07-10 | 2018-12-11 | 绿传（北京）科技有限公司 | Two-speed automatic transmission and its control method |
| CN109356979A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of single clutch two-shift automatic variable speed device having reverse gear |
| CN109466298A (en) * | 2018-11-30 | 2019-03-15 | 浙江伊控动力系统有限公司 | Compact dual-motor drive system and driving method |
| CN110725907A (en) * | 2019-09-04 | 2020-01-24 | 淮阴工学院 | Two-gear transmission of electric automobile and control method thereof |
| CN111114268A (en) * | 2018-10-30 | 2020-05-08 | 郑州宇通客车股份有限公司 | Two keep off electricelectric moves sanitation car driving system and electricelectric moves sanitation car |
| CN113007291A (en) * | 2021-03-01 | 2021-06-22 | 凯博易控车辆科技(苏州)股份有限公司 | Electrically-driven heavy truck multi-gear transmission system and control method thereof |
| CN113232515A (en) * | 2021-06-28 | 2021-08-10 | 上海中科深江电动车辆有限公司 | Device for realizing low-speed braking energy recovery and integration |
| CN114435126A (en) * | 2022-02-15 | 2022-05-06 | 浙江吉利控股集团有限公司 | Driving device and vehicle |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415967Y (en) * | 2000-05-09 | 2001-01-24 | 财团法人工业技术研究院 | Two-gear automatic varing speed mechanism |
| CN102700407A (en) * | 2012-06-06 | 2012-10-03 | 吉林大学 | Horizontal power-driven device based on two-gear mechanical automatic transmission for pure electric automobile |
| CN202641339U (en) * | 2012-06-06 | 2013-01-02 | 北京汽车新能源汽车有限公司 | Twin-motor double-gear electric driving system |
| US20140033844A1 (en) * | 2012-08-06 | 2014-02-06 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Step-variable transmission for a motor vehicle |
| CN203796867U (en) * | 2014-04-19 | 2014-08-27 | 吉林大学 | Dual-motor two-level speed changer for electric car |
| CN203836098U (en) * | 2014-05-29 | 2014-09-17 | 重庆市佳南工贸有限公司 | Electric bicycle one-way gliding system with two-gear structure |
| CN204327879U (en) * | 2014-12-17 | 2015-05-13 | 重庆宗申发动机制造有限公司 | A kind of electric motor car two grades of speed variator systems |
| CN105644335A (en) * | 2014-11-14 | 2016-06-08 | 上海汽车集团股份有限公司 | Dual-motor power system and dual-motor hybrid power system for vehicle |
| CN206268387U (en) * | 2016-11-04 | 2017-06-20 | 吉林大学 | A kind of electric motor car keeps off gearbox with bi-motor two |
-
2016
- 2016-11-04 CN CN201610969077.9A patent/CN106321744B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415967Y (en) * | 2000-05-09 | 2001-01-24 | 财团法人工业技术研究院 | Two-gear automatic varing speed mechanism |
| CN102700407A (en) * | 2012-06-06 | 2012-10-03 | 吉林大学 | Horizontal power-driven device based on two-gear mechanical automatic transmission for pure electric automobile |
| CN202641339U (en) * | 2012-06-06 | 2013-01-02 | 北京汽车新能源汽车有限公司 | Twin-motor double-gear electric driving system |
| US20140033844A1 (en) * | 2012-08-06 | 2014-02-06 | Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg | Step-variable transmission for a motor vehicle |
| CN203796867U (en) * | 2014-04-19 | 2014-08-27 | 吉林大学 | Dual-motor two-level speed changer for electric car |
| CN203836098U (en) * | 2014-05-29 | 2014-09-17 | 重庆市佳南工贸有限公司 | Electric bicycle one-way gliding system with two-gear structure |
| CN105644335A (en) * | 2014-11-14 | 2016-06-08 | 上海汽车集团股份有限公司 | Dual-motor power system and dual-motor hybrid power system for vehicle |
| CN204327879U (en) * | 2014-12-17 | 2015-05-13 | 重庆宗申发动机制造有限公司 | A kind of electric motor car two grades of speed variator systems |
| CN206268387U (en) * | 2016-11-04 | 2017-06-20 | 吉林大学 | A kind of electric motor car keeps off gearbox with bi-motor two |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018145231A1 (en) * | 2017-02-08 | 2018-08-16 | 南京越博动力系统股份有限公司 | Dual axis, horizontal, pure electric driving force system for use in vehicles |
| CN108980337A (en) * | 2018-07-10 | 2018-12-11 | 绿传（北京）科技有限公司 | Two-speed automatic transmission and its control method |
| CN108679172A (en) * | 2018-07-18 | 2018-10-19 | 樊朝晖 | A kind of coaxial straight line gear |
| CN111114268A (en) * | 2018-10-30 | 2020-05-08 | 郑州宇通客车股份有限公司 | Two keep off electricelectric moves sanitation car driving system and electricelectric moves sanitation car |
| CN109356979A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of single clutch two-shift automatic variable speed device having reverse gear |
| CN109466298A (en) * | 2018-11-30 | 2019-03-15 | 浙江伊控动力系统有限公司 | Compact dual-motor drive system and driving method |
| CN110725907A (en) * | 2019-09-04 | 2020-01-24 | 淮阴工学院 | Two-gear transmission of electric automobile and control method thereof |
| CN113007291A (en) * | 2021-03-01 | 2021-06-22 | 凯博易控车辆科技(苏州)股份有限公司 | Electrically-driven heavy truck multi-gear transmission system and control method thereof |
| CN113232515A (en) * | 2021-06-28 | 2021-08-10 | 上海中科深江电动车辆有限公司 | Device for realizing low-speed braking energy recovery and integration |
| CN114435126A (en) * | 2022-02-15 | 2022-05-06 | 浙江吉利控股集团有限公司 | Driving device and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321744B (en) | 2018-07-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106321744A (en) | Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof | |
| CN201980080U (en) | Electric vehicle motive power assembly | |
| CN104728364A (en) | Power transmission apparatus for hybrid electric vehicle | |
| CN101780768A (en) | Two-speed automatic transmission for electric vehicle | |
| CN103863086A (en) | Multi-gear driving device of hybrid power vehicle | |
| CN211059305U (en) | Two keep off derailleur gearshift | |
| CN106609815A (en) | Plug-in multi-gears hybrid transmission | |
| CN107599823A (en) | Differential multimodal fusion power car drive system | |
| CN109296721A (en) | The two-speed automatic transmission of electric vehicle | |
| CN203126521U (en) | Pure electric vehicle double-gear dual clutch transmission arranger | |
| CN107972461A (en) | A kind of pure electric automobile bi-motor coupler | |
| CN102734458A (en) | Energy-efficient full-automatic speed change system | |
| CN104976303B (en) | A kind of composite box type hydraulic coupler | |
| CN107606076A (en) | A kind of two gear power transmissions with synchronizer | |
| CN206268387U (en) | A kind of electric motor car keeps off gearbox with bi-motor two | |
| CN110549847A (en) | Driving transmission device for automobile power system | |
| CN209688009U (en) | The double reduction gear of pure electric vehicle retarder | |
| CN114811036B (en) | Multi-mode double-motor two-gear gearbox for electric automobile | |
| CN2931929Y (en) | Energy-saving double-driving transmission device used for automobile | |
| CN1773142A (en) | Speed feedback stepless speed changer | |
| CN212022289U (en) | Dual-motor dual-clutch hybrid variable-speed transmission mechanism for vehicle | |
| CN102829140A (en) | Automatic eight-gear hybrid gearbox | |
| CN108016267A (en) | A kind of single motor coupler of pure electric vehicle | |
| CN209240860U (en) | Power-driven system and vehicle | |
| CN201714940U (en) | Automotive speed changing power transmission mechanism using hydraulic motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |