CN108177512A - Two grades of speed change electricity of integrated form drive assembly system and application process - Google Patents
Two grades of speed change electricity of integrated form drive assembly system and application process Download PDFInfo
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- CN108177512A CN108177512A CN201711195598.4A CN201711195598A CN108177512A CN 108177512 A CN108177512 A CN 108177512A CN 201711195598 A CN201711195598 A CN 201711195598A CN 108177512 A CN108177512 A CN 108177512A
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- brake
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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
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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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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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
Abstract
The present invention provides a kind of two grades of speed change electricity of integrated form to drive assembly system and application process, including：Driving motor, the first brake, second brake, compound planetary gearing, master subtracts and differential assembly；The output shaft of driving motor is connected by spline with front-seat planet carrier；Front-seat gear ring and rear ring gear are connected as a single entity, and heel row sun gear ditto ranks carrier and is connected；The steel disc group of first brake and second brake is engaged with gear box, and the friction plate group of the first brake is engaged with external toothing, and the friction plate group of second brake is engaged with the elongated end of front-seat sun gear；Heel row planet carrier output terminal subtracts with master and the input shaft of differential assembly is connected and exports power to wheel.Present invention decreases the axial dimensions of power assembly, the difficulty of arrangement is reduced while reducing mechanical noise, compact overall structure is small, light-weight, the design of two gears allows motor to work long hours in high efficient district, improves the dynamic property and economy of vehicle.
Description
Technical field
The present invention relates to technical field of electric vehicle transmission, and in particular, to two grades of speed change electricity of integrated form drive assembly system
And application process.
Background technology
Presently commercially available pure electric automobile, cannot although its is simple in structure, at low cost mostly using single-stage speed reducing mechanism
The dynamic property and economy of pure electric automobile are taken into account, driving motor can not always work at high efficient district, reduce electric drive assembly
The efficiency of system.Especially under the running on the lower load with max. speed of starting to walk, motor is in inefficient area, seriously affects battery
Service life and cruising ability.
A kind of driving motor of electric vehicle is disclosed in the patent of Publication No. CN102152738A to move with speed changer
Power integrates, which reduces mechanical noise and vibration by the way that motor front end cover and case of transmission are designed to an entirety,
The difficulty of arrangement is reduced, improves the reliability of electric drive power assembly, but it is substantially still a gear
Deceleration mechanism.
The drawbacks of in order to avoid using single-stage speed reducing mechanism, pure electric automobile should use multi-shifting speed variator.Compared with more multi gear
The step change transmission or even contiuously variable transmission of position, two keep off more compact, the relevant technologies relative maturity in gear structures, can be with low
Cost realizes higher transmission efficiency, improves the dynamic property and economy of pure electric automobile.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of two grades of speed change electricity of integrated form to drive assembly system
And application process.
Assembly system is driven according to two grades of speed change electricity of integrated form provided by the invention, including：Driving motor 1, the first brake
4th, second brake 11, compound planetary gearing, main subtract and differential assembly 7；Wherein：
The output shaft of driving motor 1 is connected by spline with the front-seat planet carrier in compound planetary gearing；Double row
The front-seat gear ring and rear ring gear of star gear mechanism are connected as a single entity, and heel row sun gear ditto ranks carrier and is connected；First braking
The steel disc group of device 4 and second brake 11 is engaged with gear box, and the friction plate group of the first brake 4 is engaged with external toothing,
The friction plate group of second brake 11 is engaged with the elongated end of front-seat sun gear；Heel row planet carrier output terminal subtracts with master and differential mechanism
The input shaft of assembly 7 is connected and exports power to wheel.
Preferably, the master subtracts and differential assembly 7 includes：Final gear group, main differential mechanism；The master subtracts and differential
The shell of device assembly 7 is cast with gear-box case Integrated design；The final gear group structure type includes：Roller gear
Formula, conical gear and hypoid gear；The main differential mechanism is symmetrical bevel differential.
Preferably, the driving motor 1 includes：Stator 101, rotor 102 and motor housing, the motor housing and speed change
Case shell Integrated design is cast, and stator 101 is fixed inside the shell, and rotor 102 is embedded in stator 101, driving motor output
The external part of axis is fixedly connected with the planet carrier of front-seat planetary gear set by spline.
Preferably, the sun gear of front and rear planetary gear set, the first system in the driving motor 1, compound planetary gearing
The steel disc group and friction plate group of dynamic device 4, the steel disc group of second brake 11 and friction plate group, master subtracts and the master of differential assembly subtracts
The driving gear of fast gear set is coaxial arrangement.
Preferably, first brake 4 and second brake 11 include：Wet brake or Wedge clutch.
Assembly systematic difference method is driven according to two grades of speed change electricity of integrated form provided by the invention, is included the following steps：
Pre-treatment step：Recording the characteristic parameter of planetary gear set, i.e. the gear ratio of gear ring and sun gear is k, wherein before
The characteristic parameter of planet row is k1, the characteristic parameter of rear planet row is k2, speed ratio of main reducer i0；
Operating mode step is set：Two fast ratios are realized by the cooperation of the first brake 4 and second brake 11, are realized
Transformation between electric vehicle different working modes.
Preferably, different working modes include in the setting operating mode step：
Neutral mode, i.e. N：
When first brake 4 and second brake 11 are in discrete state, two grades of speed change electricity of integrated form drive assembly at this time
Degree of freedom for 2, power can not be transmitted to main subtract and differential assembly, vehicle rely on inertia traveling or stopping from input shaft；
Forward mode, i.e. D, including：Two grades of forward gear and advance are denoted as D1 gears and D2 gears respectively；
D1 gear patterns：First brake 4 is in engagement state, when second brake 11 is in discrete state, front and rear planet
The gear ring of gear set is by 4 locking of the first brake, after the planet carrier input of the premenstrual planetary gear set of power of motor, the planet after
The sun gear and planet carrier of gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio is 1+k2,
D1 gears are bottom gear, and the speed of entire transaxle is than being i0*(1+k2)；
D2 gear patterns：First brake 4 is in discrete state, when second brake 11 is in engagement state, preceding planet tooth
The sun gear of wheel group is by 11 locking of second brake, after the planet carrier input of the premenstrual planetary gear set of power of motor, the row after
The sun gear and planet carrier of star gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio isD2 gears are overgear, and the fast ratio of entire transaxle is
Reverse mode, i.e. R, rotor rotation direction at D on the contrary, the first brake 4 is in joint shape at this time
State, second brake 11 are in discrete state.
Compared with prior art, the present invention has following advantageous effect：
Two grades of speed change electricity of integrated form provided by the invention drive assembly, and by driving motor, transmission portion and master subtracts and differential
The design of device assembly is integral, reduces the axial dimension of power assembly, arrangement is reduced while reducing mechanical noise
Difficulty；Driving motor rotor shaft is directly connected with transmission gear, avoids motor output shaft and matches with transmission input shaft
Close installation and caused by concentricity tolerance, eliminate the mechanical oscillation thus brought；It, should compared with commercially available single-stage speed reducing mechanism
Inventive structure is compact, small, light-weight, and the design of two gears allows motor to work long hours in high efficient district, improves whole
The dynamic property and economy of vehicle.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 drives the mechanical connection figure of assembly for two grades of speed change electricity of integrated form that embodiment in the present invention is provided；
Fig. 2 drives the structure diagram of assembly for two grades of speed change electricity of integrated form that embodiment in the present invention is provided；
In figure：
1 is driving motor；
101 be stator；
102 be rotor；
2 be front planetary line；
3 be preceding planet toothrow circle；
4 be the first brake；
5 be rear planet row gear ring；
6 be rear planet row planet carrier；
Subtract based on 7 and differential assembly；
Subtract gear set based on 701；
702 be differential mechanism；
8 be power output shaft；
9 be rear planet row sun gear；
10 be preceding planet row sun gear；
11 be second brake.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
Assembly system is driven according to two grades of speed change electricity of integrated form provided by the invention, including：Driving motor 1, the first brake
4th, second brake 11, compound planetary gearing, main subtract and differential assembly 7；Wherein：
The output shaft of driving motor 1 is connected by spline with the front-seat planet carrier in compound planetary gearing；Double row
The front-seat gear ring and rear ring gear of star gear mechanism are connected as a single entity, and heel row sun gear ditto ranks carrier and is connected；First braking
The steel disc group of device 4 and second brake 11 is engaged with gear box, and the friction plate group of the first brake 4 is engaged with external toothing,
The friction plate group of second brake 11 is engaged with the elongated end of front-seat sun gear；Heel row planet carrier output terminal subtracts with master and differential mechanism
The input shaft of assembly 7 is connected and exports power to wheel.
The master subtracts and differential assembly 7 includes：Final gear group, main differential mechanism；The master subtracts and differential assembly 7
Shell and gear-box case Integrated design cast；The final gear group structure type includes：Cylinder Gear is wheeled, circular cone tooth
Wheel and hypoid gear；The main differential mechanism is symmetrical bevel differential.
The driving motor 1 includes：Stator 101, rotor 102 and motor housing, the motor housing and gear-box case
Integrated design is cast, and stator 101 is fixed inside the shell, and rotor 102 is embedded in stator 101, and driving motor output shaft is stretched
Outlet is fixedly connected with the planet carrier of front-seat planetary gear set by spline.
The sun gear of front and rear planetary gear set in the driving motor 1, compound planetary gearing, the first brake 4
Steel disc group and friction plate group, the steel disc group of second brake 11 and friction plate group, master subtracts and the final gear of differential assembly
The driving gear of group is coaxial arrangement.
First brake 4 and second brake 11 include：Wet brake or Wedge clutch.
Assembly systematic difference method is driven according to two grades of speed change electricity of integrated form provided by the invention, is included the following steps：
Pre-treatment step：Recording the characteristic parameter of planetary gear set, i.e. the gear ratio of gear ring and sun gear is k, wherein before
The characteristic parameter of planet row is k1, the characteristic parameter of rear planet row is k2, speed ratio of main reducer i0；
Operating mode step is set：Two fast ratios are realized by the cooperation of the first brake 4 and second brake 11, are carried out
The transformation of following operating mode：
Neutral mode, i.e. N：
When first brake 4 and second brake 11 are in discrete state, two grades of speed change electricity of integrated form drive assembly at this time
Degree of freedom for 2, power can not be transmitted to main subtract and differential assembly, vehicle rely on inertia traveling or stopping from input shaft；
Forward mode, i.e. D, including：Two grades of forward gear and advance are denoted as D1 gears and D2 gears respectively；
D1 gear patterns：First brake 4 is in engagement state, when second brake 11 is in discrete state, front and rear planet
The gear ring of gear set is by 4 locking of the first brake, after the planet carrier input of the premenstrual planetary gear set of power of motor, the planet after
The sun gear and planet carrier of gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio is 1+k2。
This gear is bottom gear, and the speed of entire transaxle is than being i0*(1+k2), it runs at a low speed and climbs in being mainly used for.
D2 gear patterns：First brake 4 is in discrete state, when second brake 11 is in engagement state, preceding planet tooth
The sun gear of wheel group is by 11 locking of second brake, after the planet carrier input of the premenstrual planetary gear set of power of motor, the row after
The sun gear and planet carrier of star gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio isThis gear is overgear, and the fast ratio of entire transaxle isIt is mainly used for
It runs at high speed.
Reverse mode, i.e. R (opposite when rotor rotation direction is with D)：
First brake 4 is in engagement state, and second brake 11 is in discrete state.Power transmission line keeps off phase with D1
Together, due to rotor rotation direction at D on the contrary, last wheel reversing output power.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments creates.
As depicted in figs. 1 and 2, the present embodiment includes：Driving motor 1, front planetary line 2, preceding planet toothrow circle 3,
First brake 4, rear planet row gear ring 5, rear planet row planet carrier 6, master subtracts and differential assembly 7, power output shaft 8, rear row
Star arranges sun gear 9, preceding planet row sun gear 10, second brake 11.
Specifically, the front end of front planetary line 2 is fixedly connected by spline with the output shaft of driving motor 1, rear end
It is connected with rear planet row sun gear 9；Preceding planet toothrow circle 3 and rear planet row gear ring 5 are processed into an entirety, and can pass through first
Brake 4 is connected with gear-box case；Preceding planet row sun gear 10 is fixed positioned at one end of hollow axle, and the other end passes through second
Brake 11 is connected with gear-box case, which is coaxially set on the output shaft of driving motor；Preceding planet rows of planetary
There are two above front-seat planetary gears and more than two rear rows of planetary respectively in the support shaft of frame 2 and rear planet row planet carrier 6
Wheel, and engaged respectively with preceding planet toothrow circle 3 and rear planet row gear ring 5；The output terminal of planet row planet carrier 6 subtracts and poor with main afterwards
The input shaft of fast device assembly 7 is connected.
The driving motor 1 is made of stator 101, rotor 102 and housing, and wherein motor housing is integrated with gear-box case
Design casting, stator are fixed inside the shell, and rotor is embedded in stator, the external part of motor output shaft and preceding planet rows of planetary
Frame 2 is connected connection by spline.
The master subtracts and differential assembly 7 is made of final gear group 701 and differential mechanism 702, wherein master subtracts and differential
The shell of device assembly is cast with gear-box case Integrated design.In the present embodiment, main speed reducing gear pair structure type can be circle
Stud wheel formula, conical gear and hypoid gear etc., main differential mechanism can be symmetrical bevel gear open differential.
The driving motor 1, rear planet row sun gear 9, preceding planet row sun gear 10, the first brake 4 and the second braking
The steel disc group and friction plate group of device 11, the master subtract and the coaxial arrangement of the driving gear of the final gear group of differential assembly 7.
In the present embodiment, driving motor 1 can be the permanent magnet synchronous motor of permanent magnet in outer winding, the first brake 4
With second brake 11 can be spot-type disc brake, electromagnetic brake or hydraulic frictional piece-type brake, planetary gear set structure
Part 2,3,5,6,9 and 10 can be high intensity, low noise, appropriate correction of the flank shape gear (for realize motor reverse gear need it is special plus
Work), power output shaft 8 can be the constant velocity driving shaft of high efficiency, low vibration.
Two grades of speed change electricity of integrated form provided by the invention, which drive assembly, can make power drive system have N, D and R etc.
Operating mode is below described working method of the electric drive assembly system provided by the invention in each operating mode.
The executive component working condition of each gear is as shown in table 1.
The gearshift executive component worksheet of table 1
| Gear title | First brake | Second brake |
| Neutral gear | ○ | ○ |
| Advance one grade | ● | ○ |
| Advance two gears | ○ | ● |
| It reverses gear | ● | ○ |
Note："●" represents engagement in table, and "○" represents separation
For the present embodiment in neutral gear, the first brake 4 and second brake 11 are in discrete state, at this time the integrated form
The degree of freedom that two grades of speed change electricity drive assemblies is 2, and power can not be transmitted to main subtract and differential assembly 7, vehicle are relied on from input shaft
Inertia traveling comes to a halt.
For the present embodiment in forward gear, the first brake 4 is in engagement state, and second brake 11 is in separation shape
State, preceding planet toothrow circle 3 and rear planet row gear ring 5 are by 4 locking of the first brake, and the power of motor 1 is through front planetary line 2
After input, after planet row sun gear 9 and after planet row planet carrier 6, master subtracts gear set 7-1 and main differential mechanism 7-2 causes wheel
Rotation output power.
The present embodiment advance two grades when, the first brake 4 is in discrete state, and second brake 11 is in joint shape
State, preceding planet row sun gear 10 is by 11 locking of second brake, and the power of motor 1 is after the input of front planetary line 2, after
Planet row sun gear 9 and rear planet row planet carrier 6, the main gear set 7-1 and main differential mechanism 7-2 that subtracts so that wheel rotation output is dynamic
Power.
The present embodiment when reversing gear, the rotation direction of the rotor 1-2 of driving motor 1 with during forward gear on the contrary, at this time first
Brake 4 is in engagement state, and second brake 11 is in discrete state.Power transmission line with advance one grade when identical, vehicle
Wheel reversion output power.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (7)
1. a kind of two grades of speed change electricity of integrated form drive assembly system, which is characterized in that including：Driving motor (1), the first brake
(4), second brake (11), compound planetary gearing, main subtract and differential assembly (7)；Wherein：
The output shaft of driving motor (1) is connected by spline with the front-seat planet carrier in compound planetary gearing；Double planet
The front-seat gear ring and rear ring gear of gear mechanism are connected as a single entity, and heel row sun gear ditto ranks carrier and is connected；First brake
(4) it is engaged with the steel disc group of second brake (11) with gear box, the friction plate group of the first brake (4) is nibbled with external toothing
It closes, the friction plate group of second brake (11) is engaged with the elongated end of front-seat sun gear；Heel row planet carrier output terminal subtract with main and
The input shaft of differential assembly (7) is connected and exports power to wheel.
2. two grades of speed change electricity of integrated form according to claim 1 drive assembly system, which is characterized in that the master subtracts and differential
Device assembly (7) includes：Final gear group, main differential mechanism；The master subtracts and the shell and gear-box case of differential assembly (7)
Integrated design is cast；The final gear group structure type includes：Cylinder Gear is wheeled, conical gear and hypoid gear
Wheel；The main differential mechanism is symmetrical bevel differential.
3. two grades of speed change electricity of integrated form according to claim 1 drive assembly system, which is characterized in that the driving motor
(1) include：Stator (101), rotor (102) and motor housing, the motor housing are cast with gear-box case Integrated design, fixed
Sub (101) are fixed, and rotor (102) is embedded in stator (101) inside the shell, external part and the front row of driving motor output shaft
The planet carrier of planetary gear set is fixedly connected by spline.
4. two grades of speed change electricity of integrated form according to claim 1 drive assembly system, which is characterized in that the driving motor
(1), the sun gear of front and rear planetary gear set, the steel disc group of the first brake (4) and friction plate group in compound planetary gearing,
The steel disc group and friction plate group of second brake (11), master subtracts and the driving gear of the final gear group of differential assembly is same
Axis is set.
5. two grades of speed change electricity of integrated form according to claim 1 drive assembly system, which is characterized in that first brake
(4) include with second brake (11)：Wet brake or Wedge clutch.
6. a kind of two grades of speed change electricity of integrated form drive assembly systematic difference method, which is characterized in that include the following steps：
Pre-treatment step：The characteristic parameter of planetary gear set is recorded, i.e. the gear ratio of gear ring and sun gear is k, wherein preceding planet
The characteristic parameter of row is k1, the characteristic parameter of rear planet row is k2, speed ratio of main reducer i0；
Operating mode step is set：Two fast ratios are realized by the cooperation of the first brake (4) and second brake (11), are realized
Transformation between electric vehicle different working modes.
7. two grades of speed change electricity of integrated form according to claim 6 drive assembly systematic difference method, which is characterized in that described
Different working modes include in setting operating mode step：
Neutral mode, i.e. N：
When first brake (4) and second brake (11) are in discrete state, two grades of speed change electricity of integrated form drive assembly at this time
Degree of freedom for 2, power can not be transmitted to main subtract and differential assembly, vehicle rely on inertia traveling or stopping from input shaft；
Forward mode, i.e. D, including：Two grades of forward gear and advance are denoted as D1 gears and D2 gears respectively；
D1 gear patterns：First brake (4) is in engagement state, when second brake (11) is in discrete state, front and rear planet
The gear ring of gear set is by the first brake (4) locking, after the planet carrier input of the premenstrual planetary gear set of power of motor, the row after
The sun gear and planet carrier of star gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio is 1+
k2, D1 gears are bottom gear, and the speed of entire transaxle is than being i0*(1+k2)；
D2 gear patterns：First brake (4) is in discrete state, when second brake (11) is in engagement state, preceding planet tooth
The sun gear of wheel group is by second brake (11) locking, after the planet carrier input of the premenstrual planetary gear set of power of motor, after
The sun gear and planet carrier of planetary gear set, master subtract gear set and differential mechanism causes wheel rotation output power, this speed per hour ratio isD2 gears are overgear, and the fast ratio of entire transaxle is
Reverse mode, i.e. R, rotor rotation direction at D on the contrary, at this time the first brake (4) in engagement state,
Second brake (11) is in discrete state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017203227618 | 2017-03-29 | ||
| CN201720322761 | 2017-03-29 |
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| Publication Number | Publication Date |
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| CN108177512A true CN108177512A (en) | 2018-06-19 |
| CN108177512B CN108177512B (en) | 2019-11-01 |
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| CN201711195598.4A Expired - Fee Related CN108177512B (en) | 2017-03-29 | 2017-11-24 | Two grades of speed change electricity of integrated form drive assembly system and application method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109058402A (en) * | 2018-08-30 | 2018-12-21 | 上海迪鲲机电科技有限公司 | A kind of dual planetary gear speed changer and control method for electric vehicle |
| CN109050228A (en) * | 2018-08-23 | 2018-12-21 | 广州汽车集团股份有限公司 | Pure electric automobile and power assembly system |
| CN109099131A (en) * | 2018-08-30 | 2018-12-28 | 上海迪鲲机电科技有限公司 | A kind of electric drive transmission device and control method for electric vehicle |
| CN109466319A (en) * | 2018-12-13 | 2019-03-15 | 广州市新域动力技术有限公司 | Automobile large speed ratio double speed power assembly |
| CN109751380A (en) * | 2019-03-25 | 2019-05-14 | 吉林大学 | Three gear speed change lightweight electric drive axle assemblies |
| CN110071597A (en) * | 2019-06-05 | 2019-07-30 | 吉林大学 | Power failure-free internal rotor hub motor two keeps off speed change system and electric car |
| CN110281765A (en) * | 2019-07-26 | 2019-09-27 | 上海伊控动力系统有限公司 | Two grades of coaxial electric bridges of one kind and its process for gear |
| CN110435419A (en) * | 2019-07-30 | 2019-11-12 | 重庆青山工业有限责任公司 | A kind of two grades of rear axle power systems of pure electric automobile |
| CN110843490A (en) * | 2019-12-06 | 2020-02-28 | 格特拉克（江西）传动系统有限公司 | Two-gear coaxial electric drive system |
| CN111853179A (en) * | 2020-06-04 | 2020-10-30 | 义乌吉利自动变速器有限公司 | Two-gear speed reducer device and vehicle |
| WO2020244703A1 (en) * | 2019-06-07 | 2020-12-10 | Schaeffler Technologies AG & Co. KG | Electric axle drive unit having a two-gear transmission device; and motor vehicle |
| CN113085519A (en) * | 2021-05-06 | 2021-07-09 | 华中科技大学 | Dual-motor electric automobile driving system |
| CN110281765B (en) * | 2019-07-26 | 2024-05-03 | 上海伊控动力系统有限公司 | Two-gear coaxial bridge and gear shifting method thereof |
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