CN110406362A - Electric automobile and power assembly thereof - Google Patents
Electric automobile and power assembly thereof Download PDFInfo
- Publication number
- CN110406362A CN110406362A CN201810399204.5A CN201810399204A CN110406362A CN 110406362 A CN110406362 A CN 110406362A CN 201810399204 A CN201810399204 A CN 201810399204A CN 110406362 A CN110406362 A CN 110406362A
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- Prior art keywords
- planet carrier
- shell
- output shaft
- planet
- power assembly
- 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.)
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- 238000005096 rolling process Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 3
- 238000000429 assembly Methods 0.000 claims 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
An electric automobile and power assembly thereof, the power assembly includes: the driving motor, the speed reducing mechanism and the differential mechanism are sequentially arranged along the axial direction of the output shaft, and the driving motor is suitable for driving the output shaft to rotate; the speed reducing mechanism comprises a first planet row and a second planet row which are axially arranged, and the driving motor is suitable for transmitting power to the differential mechanism through the output shaft, the first planet row and the second planet row; the first planet row comprises a first planet carrier, a first sun gear, a first planet gear and a first gear ring which are sequentially engaged from inside to outside in the radial direction, and the second planet row comprises a second planet carrier, a second sun gear, a second planet gear and a second gear ring which are sequentially engaged from inside to outside in the radial direction; the first sun wheel is sleeved on the output shaft and is circumferentially fixed on the output shaft; one of the first gear ring and the first planet carrier is fixedly arranged on a shell of the power assembly, and the other one of the first gear ring and the first planet carrier is fixedly connected with a second sun gear; the second planet carrier is circumferentially and fixedly arranged on the shell, and the second gear ring is fixedly connected with the differential.
Description
Technical field
The present invention relates to automobile technical fields, and in particular to a kind of electric car and its power assembly.
Background technique
With environmental protection and fuel-saving requirement, electric car is increasingly had been favored by people.Electric car with
Battery is primary energy source, and power source is completely or partially provided by driving motor.For orthodox car, in electric car
The structure of power assembly biggish change has occurred.The change of power assembly specific structure necessarily will affect the comprehensive of electric car
Close performance, such as electric car NVH performance etc..Therefore, the specific structure for how designing power assembly in electric car makes electronic
Automobile has more superior comprehensive performance, is prior art technical problem urgently to be resolved.
Summary of the invention
Problems solved by the invention be the design of prior art power assembly of electric automobile so that electric car NVH performance
It is relatively poor.
To solve the above problems, the present invention provides a kind of power assembly of electric car, comprising: output shaft and along described defeated
The driving motor, gear reducer structure and differential mechanism that the axial direction of shaft is set gradually, the driving motor are suitable for driving output shaft rotation；
The deceleration mechanism includes the first planet row and the second planet row of axial alignment, and the driving motor is suitable for passing through the output
Power is transferred to the differential mechanism by axis, the first planet row and the second planet row；First planet row includes first planet carrier
With radial the first sun gear, the first planetary gear and the first gear ring successively engaged from inside to outside, second planet row includes the
Two planet carriers and radial the second sun gear, the second planetary gear and the second gear ring successively engaged from inside to outside；First sun
Wheel is sheathed on the output shaft, and circumferentially fixed in the output shaft；Wherein one in first gear ring and first planet carrier
A shell for being fixedly installed on the power assembly, another is fixedly connected with second sun gear；The second planet carrier week
To the shell is fixedly installed on, second gear ring is fixedly connected with the differential mechanism.
Optionally, first gear ring is fixedly installed on the shell, and the first planet carrier is fixedly connected with described second
Sun gear.
Optionally, the shell includes the housing wall suitable for separating the driving motor and deceleration mechanism, the first row
Carrier is close to one end of the housing wall by rolling bearing radial support in the housing wall.
Optionally, the first planet carrier passes through rolling bearing radial support in the difference close to one end of the differential mechanism
Fast device.
Optionally, the shell includes the housing wall suitable for separating the driving motor and deceleration mechanism, the first row
Carrier axial limiting is between the housing wall and second planet carrier.
Optionally, thrust bearing is equipped between the first planet carrier and the housing wall；And/or first planet
Thrust bearing is equipped between frame and second planet carrier.
Optionally, the shell includes first shell for accommodating the driving motor and for accommodating the speed reducer
The second shell of structure, the first shell, second shell share the housing wall between the driving motor and deceleration mechanism.
Optionally, first sun gear is fixedly installed on the output shaft or spline is connected to the output shaft；With/
Or, second planet carrier is fixedly installed on the shell or keyway is connected to the shell.
Optionally, the differential mechanism is by rolling bearing radial support in the shell.
In order to solve the above technical problems, the technical program also provides a kind of electric car, including above-described power is total
At.
Compared with prior art, technical solution of the present invention has the advantage that
In the power assembly of electric car, by making the first sun gear is circumferentially fixed to be set to output shaft, the first gear ring is solid
Surely it is set to shell, the second planet carrier is circumferentially fixed to be set to shell, and first planet carrier is made to be fixedly connected with the second sun gear, the
Two gear rings are fixedly connected with differential mechanism.Second planet carrier can be respectively used to the second sun gear of support and the second gear ring, i.e. the second row
Star row can be supported in shell, support the second planet row without using output shaft, allow output shaft to become shorter, thus not
Easily output shaft is made to deform, improves the NVH performance of electric car.
Also, the second planet carrier can preferably support differential mechanism by the second gear ring.At this point, without output shaft is utilized
Support differential mechanism, no setting is required between differential mechanism and output shaft rolling bearing so that when the second gear ring is fixedly connected with differential mechanism without
Axially extending longer distance is needed, the rigidity of the second gear ring will not be made to be deteriorated, so as to further promote the NVH of electric car
Performance.Meanwhile second gear ring be not necessarily to axially extending longer distance, not will cause the waste of exceptional space, so that power assembly
Structure it is more compact.
Further, the 4th rolling bearing is equipped between first planet carrier and housing wall with radial support first planet carrier,
The 5th rolling bearing is equipped between differential mechanism with radial support first planet carrier.First planet carrier is supported in shell and differential
Device can reduce the active force to the first sun gear, that is, reduce the active force to output shaft, further decrease the change of output shaft
Shape promotes the NVH performance of electric car.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of prior art power assembly of electric automobile；
Fig. 2 is the structural schematic diagram of specific embodiment of the invention power assembly of electric automobile.
Specific embodiment
Referring to Fig.1, the power assembly 110 of a kind of electric car of the prior art, including driving motor 120, deceleration mechanism
130 and differential mechanism 140.Wherein, driving motor 120, deceleration mechanism 130 and differential mechanism 140 are set gradually along axial direction, and are integrated into
Integral structure.Power assembly 110 respectively drives the wheels travel of two sides by left half axle 150 and right axle shaft 160.The power assembly
110 integrated levels are high, compact-sized, can effectively reduce the occupied space of power assembly 110, facilitate the cloth of power assembly 110
It sets.
Specifically, driving motor 120 has stator 121 and rotor 122, rotor 122 is fixedly connected with output shaft 170.Slow down
Mechanism 130 includes axially disposed the first planet row 131 and the second planet row 132.First planet row 131 includes first sun
131a, the first planetary gear 131b, first planet carrier 131c and the first gear ring 131d are taken turns, the second planet row 132 includes second sun
Take turns 132a, the second planetary gear 132b, the second planet carrier 132c and the second gear ring 132d.
In 110 course of work of power assembly, the power of driving motor 120 is successively by rotor 122, output shaft 170, first
Sun gear 131a, the first planetary gear 131b, first planet carrier 131c, the second sun gear 132a, the second planetary gear 132b, the second row
Carrier 132c, differential mechanism 140 are transferred to left half axle 150 and right axle shaft 160, drive wheels travel.
But output shaft 170 is relatively long in such power assembly 110, and the first planet row 131, the second planet row 132
It is both supported upon on output shaft 170 with differential mechanism 140, output shaft 170 is caused to be prone to deform, to largely influence
The NVH performance of electric car.
Moreover, differential mechanism 140 is arranged on output shaft 170 by rolling bearing 180, rolling bearing 180 is located at the second row
Between star row 132 and differential mechanism 140.However, the second planet carrier 132c is fixedly connected with differential mechanism 140.That is, the second planet
Frame 132c needs around rolling bearing 180 to be fixedly connected with differential mechanism 140, so that the axially extending distance of the second planet carrier 132c
It is longer, cause the rigidity of the second planet carrier 132c poor, further influences the NVH performance of electric car.
In addition, such design method also makes have biggish radial direction between rolling bearing 180 and the second planet carrier 132c
Space 190, and the radial space 190 cannot be effectively utilized.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Referring to Fig. 2, a kind of power assembly of electric car, including the shell K and output shaft Z being arranged in shell K, driving
Motor M, deceleration mechanism T and differential mechanism D.Wherein, driving motor M includes stator M1 and rotor M2, and rotor M2 is fixedly connected with output
Axis Z and deceleration mechanism T are to transmit power.Deceleration mechanism T includes the first planet row P and the second planet row G, driving motor M, first
Planet row P, the second planet row G and differential mechanism D are arranged successively setting along the axial direction of output shaft Z.
First planet row P includes: the first sun gear P1, the first planetary gear P2, the first gear ring P3 and first planet carrier P4.Its
In, the first planetary gear P2 be it is multiple, along the circumferentially distributed of the first sun gear P1, and can rotation setting in first planet carrier P4
On.First sun gear P1, multiple first planetary gear P2, the first gear ring P3 are radially successively engaged from inside to outside.
Second planet row G includes: the second sun gear G1, the second planetary gear G2, the second gear ring G3 and the second planet carrier G4.Its
In, the second planetary gear G2 be it is multiple, along the circumferentially distributed of the second sun gear G1, and can rotation setting in the second planet carrier G4
On.Second sun gear G1, multiple second planetary gear G2, the second gear ring G3 are radially successively engaged from inside to outside.
In the present embodiment, the first sun gear P1 is fixedly installed on output shaft Z, and the first gear ring P3 is fixedly installed on shell K.And
And second sun gear G1 be fixedly connected with first planet carrier P4, the second planet carrier G4 is fixedly installed on shell K, and the second gear ring G3 is solid
Determine connected with differential D.
Therefore, when driving motor M works, rotor M2 is able to drive output shaft Z rotation, to drive the first sun gear P1
Rotation.First sun gear P1 cooperates the first gear ring P3 to drive the first planetary gear P2 rotation, and rotates around the first sun gear P1.The
One planetary gear P2 rotates first planet carrier P4, and drives the second sun gear G1 rotation.Second sun gear G1 cooperates the second planet
Frame G4 drives the second planetary gear G2 rotation, the second gear ring G3 rotation.Differential mechanism D is finally transferred to by the second gear ring G3, and by a left side
Semiaxis S1 and right axle shaft S2 are transferred to automotive wheel.That is, the power of driving motor M is successively by output shaft Z, first sun
Wheel P1, the first planetary gear P2, first planet carrier P4, the second sun gear G1, the second planetary gear G2, the second gear ring G3 are transferred to differential
Device D realizes running car.
Wherein, output shaft Z is hollow structure, and left half axle S1 is adapted to pass through the hollow space of output shaft Z to connect Automobile
Wheel.
As shown in Fig. 2, the second planet carrier G4 can be respectively used to since the second planet carrier G4 is fixed on shell K
Support the second sun gear G1 and the second gear ring G3.That is, the second planet row G can be supported in shell K.At this point, without using output
Axis Z supports the second planet row G, and output shaft Z is allowed to become shorter, to be not easy that output shaft Z is made to deform, improves electronic
The NVH performance of automobile.
Further, differential mechanism D is fixedly connected with the second gear ring G3 close to the side of the second planet row G, and the other side passes through the
One rolling bearing B1 is supported in shell K.Second planet carrier G4 is fixedly installed on shell K, and the second planet carrier G4 can pass through second
Gear ring G3 preferably supports differential mechanism D.At this point, without using output shaft Z support differential mechanism D, differential mechanism D and output shaft Z it
Between no setting is required rolling bearing will not so that without axially extending longer distance when the second gear ring G3 is fixedly connected with differential mechanism D
The rigidity of the second gear ring G3 is set to be deteriorated, further to promote the NVH performance of electric car.
Also, compared to the prior art, since the second gear ring G3 is not necessarily to axially extending longer distance, not will cause additional
The waste in space is easy to arrange so that the structure of power assembly is more compact.
It should be noted that the first gear ring P3 is fixedly installed on shell K in the present embodiment, first planet carrier P4 is fixedly connected
Second sun gear G1.In other variations, first planet carrier P4 can also be made to be fixedly installed on shell K, and make the first gear ring
P3 is fixedly connected with the second sun gear G1.At this point, the power of driving motor M is successively by output shaft Z, the first sun gear P1, the first row
Star-wheel P2, the first gear ring P3, the second sun gear G1, the second planetary gear G2, the second gear ring G3 are transferred to differential mechanism D, drive automobile
Traveling, does not influence the implementation of the technical program.
In addition, the first sun gear P1 can not only be fixedly installed on output shaft Z, can also be connect with output shaft Z spline.
As long as equally the power of output shaft Z can be transferred to first that is, keeping the first sun gear P1 and output shaft Z circumferentially fixed
Sun gear P1.Likewise, the second planet carrier G4 can not only be fixedly installed on shell K, can also be connect with shell K keyway, together
The power of second sun gear G1 can be transferred to the second gear ring G3, driving differential mechanism D operating by sample.
Wherein, spline connection refers to being equally spaced on two parts and the identical key teeth of the number of teeth interconnects, and transmits dynamic
Power.And keyway connection refers to key and slot by being correspondingly arranged, to realize the connection of two objects, the quantity of key is unrestricted
The distance between system, two neighboring key are also unrestricted.The covered range of keyway connection is bigger, can be spline connection,
It can be the mating connection of the key and slot of other forms.
In the present embodiment, need to transmit power between the first sun gear P1 and output shaft Z, selection is fixedly connected or spline connects
Connect effective transmitting to guarantee power.Without transmitting power between second planet carrier G4 and shell K, can be fixedly connected, or choosing
It is connected with general keyway.
With continued reference to Fig. 2, shell K is made of multiple portions, and be spirally connected fixation between multiple portions.Specifically, shell K includes
First shell K1 and second shell K2.Driving motor M is fixed in the space that first shell K1 is surrounded, deceleration mechanism T
It is fixed in the space that second shell K2 is surrounded.Also, first shell K1, second shell K2, which are shared, is located at driving motor
Housing wall K3 between M and deceleration mechanism T, housing wall K3 are for separating driving motor M and deceleration mechanism T.
Wherein, shell K is by the second rolling bearing B2, third rolling bearing B3 connection output shaft Z so that output shaft Z with
It being capable of relative rotation between shell K.
In the present embodiment, first planet carrier P4 is supported in housing wall K3 close to one end of housing wall K3, far from housing wall K3
One end be supported in differential mechanism D.Specifically, being equipped with the 4th rolling bearing B4 between first planet carrier P4 and housing wall K3 with radial direction
It supports and is equipped with the 5th rolling bearing B5 between first planet carrier P4 and differential mechanism D with radial support first planet carrier P4.
First planet carrier P4 is supported in shell K and differential mechanism D, can reduce the active force to the first sun gear P1, that is, subtract
The small active force to output shaft Z, further decreases the deformation of output shaft Z, to further promote the NVH performance of electric car.
In the present embodiment, first planet carrier P4 also by axial limiting between housing wall K3 and the second planet carrier G4, to prevent
In the stopping power assembly course of work, axial float occurs for first planet carrier P4.Specifically, first planet carrier P4 and housing wall K3 it
Between be equipped between the first thrust bearing B6 and the second planet carrier G4 be equipped with the second thrust bearing B7.First thrust bearing B6, second
Thrust bearing B7 will not influence the relative rotation between first planet carrier P4 and housing wall K3, the second planet carrier G4.
The technical program also provides a kind of electric car, including above-described power assembly.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of power assembly of electric car, comprising: output shaft and the driving electricity set gradually along the axial direction of the output shaft
Machine, deceleration mechanism and differential mechanism, the driving motor are suitable for driving output shaft rotation；
The deceleration mechanism includes the first planet row and the second planet row of axial alignment, and the driving motor is suitable for by described
Power is transferred to the differential mechanism by output shaft, the first planet row and the second planet row；
First planet row includes first planet carrier and radial the first sun gear, the first planetary gear successively engaged from inside to outside
With the first gear ring, second planet row includes the second planet carrier and radial the second sun gear successively engaged from inside to outside, the
Two planetary gears and the second gear ring；
It is characterized in that, first sun gear is sheathed on the output shaft, and circumferentially fixed in the output shaft；Described first
One of them in gear ring and first planet carrier is fixedly installed on the shell of the power assembly, another is fixedly connected with described
Two sun gears；
Second planet carrier is circumferentially fixed to be set to the shell, and second gear ring is fixedly connected with the differential mechanism.
2. power assembly as described in claim 1, which is characterized in that first gear ring is fixedly installed on the shell, institute
It states first planet carrier and is fixedly connected with second sun gear.
3. power assembly as claimed in claim 2, which is characterized in that the shell include be suitable for separating the driving motor and
The housing wall of deceleration mechanism, the first planet carrier is close to one end of the housing wall by rolling bearing radial support in described
Housing wall.
4. power assembly as claimed in claim 2, which is characterized in that the first planet carrier is close to one end of the differential mechanism
By rolling bearing radial support in the differential mechanism.
5. power assembly as claimed in claim 2, which is characterized in that the shell include be suitable for separating the driving motor and
The housing wall of deceleration mechanism, the first planet carrier axial limiting is between the housing wall and second planet carrier.
6. power assembly as claimed in claim 5, which is characterized in that be equipped between the first planet carrier and the housing wall
Thrust bearing；And/or thrust bearing is equipped between the first planet carrier and second planet carrier.
7. power assembly as described in claim 1, which is characterized in that the shell includes for accommodating the driving motor
First shell and second shell for accommodating the deceleration mechanism, the first shell, second shell, which share, is located at the drive
Housing wall between dynamic motor and speed reducer structure.
8. such as the described in any item power assemblies of claim 1-7, which is characterized in that first sun gear is fixedly installed on
The output shaft or spline are connected to the output shaft；And/or second planet carrier is fixedly installed on the shell or keyway
It is connected to the shell.
9. such as the described in any item power assemblies of claim 1-7, which is characterized in that the differential mechanism passes through rolling bearing diameter
To being supported in the shell.
10. a kind of electric car, which is characterized in that including the described in any item power assemblies of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399204.5A CN110406362A (en) | 2018-04-28 | 2018-04-28 | Electric automobile and power assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810399204.5A CN110406362A (en) | 2018-04-28 | 2018-04-28 | Electric automobile and power assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110406362A true CN110406362A (en) | 2019-11-05 |
Family
ID=68356974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810399204.5A Pending CN110406362A (en) | 2018-04-28 | 2018-04-28 | Electric automobile and power assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110406362A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714872A (en) * | 2022-03-07 | 2022-07-08 | 上海汽车变速器有限公司 | Integrated speed reducer, power system of electric automobile and electric automobile |
| US20230003289A1 (en) * | 2021-07-05 | 2023-01-05 | Dana Belgium N.V. | Electric drive axle |
| CN116753298A (en) * | 2023-08-14 | 2023-09-15 | 江苏速豹动力科技有限公司 | Planet row limiting device and equipment using same |
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| WO2018045027A1 (en) * | 2016-08-30 | 2018-03-08 | Dana Heavy Vehicle Systems Group, Llc | Electric drive axle powerpath & the drive axle made therewith |
| CN107061681A (en) * | 2017-04-21 | 2017-08-18 | 吉林大学 | A kind of electric differential mechanism with torque fixed direction allocation function |
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| US20230003289A1 (en) * | 2021-07-05 | 2023-01-05 | Dana Belgium N.V. | Electric drive axle |
| US11719316B2 (en) * | 2021-07-05 | 2023-08-08 | Dana Belgium N.V. | Electric drive axle |
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Application publication date: 20191105 |