CN215204407U - Electromechanical coupling transmission device and automobile - Google Patents
Electromechanical coupling transmission device and automobile Download PDFInfo
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- CN215204407U CN215204407U CN202120205970.0U CN202120205970U CN215204407U CN 215204407 U CN215204407 U CN 215204407U CN 202120205970 U CN202120205970 U CN 202120205970U CN 215204407 U CN215204407 U CN 215204407U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The utility model belongs to the technical field of the new forms of energy, especially, relate to an electromechanical coupling transmission and car. The electromechanical coupling transmission device comprises an engine, a first motor, a second motor, a first shaft, a second shaft, a first gear assembly, a planetary gear mechanism, a brake and a first clutch arranged on the planetary gear mechanism; the first motor is connected with an output shaft of the engine; the planetary gear mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier provided with transmission teeth; the sun gear and the gear ring are both meshed with the planet gear, and the planet carrier is connected with the planet gear; the gear ring and the sun gear are both connected with a first shaft; the output shaft of the second motor is connected with the gear ring, and the brake is used for braking the sun gear; the first gear assembly comprises a first gear and a second gear which are both arranged on the second shaft; the first gear is meshed with the transmission gear, and the second gear is meshed with a differential gear of an automobile differential. The utility model discloses in, this electromechanical coupling transmission simple structure, low in manufacturing cost, and dynamic nature is strong.
Description
Technical Field
The utility model belongs to the technical field of the new forms of energy, especially, relate to an electromechanical coupling transmission and car.
Background
With the increasing scarcity of petrochemical energy and the increasing deepening of environmental protection concepts, the development of environment-friendly and energy-saving automobiles has become a new trend of the development of the automobile industry. At present, the technical bottlenecks of long charging time, short driving mileage in winter and the like of the pure electric vehicle are not broken through yet; the cost of fuel cells is high, and the construction of infrastructure such as hydrogenation requires time. The hybrid electric vehicle can utilize the existing energy charging facilities for energy charging and also has the advantages of energy conservation and emission reduction, so that the hybrid electric vehicle is a realistic and feasible solution at present. The hybrid electric vehicle needs to have a plurality of working modes and is switched to the working mode with the best economy according to the actual conditions such as vehicle speed, vehicle torque and the like; the electromechanical coupling transmission device is a key component for realizing various working modes of the hybrid electric vehicle.
However, the electromechanical coupling transmission device in the prior art has a complex structure and high manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a current electromechanical coupling transmission's structure complicated, technical problem such as manufacturing cost height provides an electromechanical coupling transmission and electric automobile.
In view of the above problems, an embodiment of the present invention provides an electromechanical coupling transmission device, including an engine, a first motor, a second motor, a first shaft, a second shaft, a first gear assembly, a planetary gear mechanism, a first clutch, and a brake; the first motor is connected with an output shaft of the engine;
the planetary gear mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier provided with transmission teeth; the sun gear and the gear ring are both meshed with the planet gear, and the planet carrier is connected with the planet gear; the gear ring and the sun gear are both connected with the first shaft; an output shaft of the second motor is connected with the gear ring, and the brake is used for braking the sun gear;
the first gear assembly comprises a first gear and a second gear both mounted on the second shaft; the first gear is meshed with the transmission gear, and the second gear is meshed with a differential gear of an automobile differential;
the first clutch is connected between the sun gear and the ring gear; or the first clutch is connected between the sun gear and the planet carrier; or the first clutch is connected between the ring gear and the carrier.
Optionally, the electro-mechanically coupled transmission further comprises a second gear assembly, and the first motor is connected to the output shaft of the engine through the second gear assembly.
Optionally, the electromechanical coupling transmission further comprises a third gear assembly, and the second motor is connected with the ring gear through the third gear assembly.
Optionally, the first axis and the second axis are parallel to each other.
Optionally, the electro-mechanically coupled transmission further comprises a second clutch; an output shaft of the engine is connected to the first shaft through the second clutch.
Optionally, the first clutch is connected between the sun gear and the ring gear.
Optionally, the first clutch is connected between the sun gear and the planet carrier.
Optionally, the first clutch is connected between the ring gear and the planet carrier.
An embodiment of the utility model provides a car is still provided, including foretell electromechanical coupling transmission.
The utility model discloses in, first motor lug connection the output shaft of engine, the engine need not to pass through planetary gear mechanism can directly drive first motor rotates, so the rotation of engine is not limited to the influence of planetary gear mechanism rotational speed upper limit, and the engine can obtain better dynamic property. In addition, the engine with first motor can be as a range extender, and at this moment, the engine with first motor all is not used for driving the automobile wheel and rotates, and this range extender can be for the second motor provides electric drive automobile wheel and rotates to make the car be equivalent to a pure electric vehicles, reduce the emission of automobile exhaust. And the electromechanical coupling transmission device has simple structure and low manufacturing cost.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of an electromechanical coupling transmission device according to a first embodiment of the present invention;
fig. 2 is a schematic view of an electromechanical coupling transmission device according to a second embodiment of the present invention;
fig. 3 is a schematic view of an electromechanical coupling transmission device according to a third embodiment of the present invention;
fig. 4 is a schematic view of an electromechanical coupling transmission device according to a fourth embodiment of the present invention;
fig. 5 is a schematic view of an electromechanical coupling transmission device according to a fifth embodiment of the present invention;
fig. 6 is a schematic view of an electromechanical coupling transmission device according to a sixth embodiment of the present invention;
fig. 7 is a schematic view of an electromechanical coupling transmission device according to a seventh embodiment of the present invention;
fig. 8 is a schematic view of an electromechanical coupling transmission device according to an eighth embodiment of the present invention;
fig. 9 is a schematic view of an electromechanical coupling transmission device according to a ninth embodiment of the present invention.
The reference numerals in the specification are as follows:
1. an engine; 2. a first motor; 3. a second motor; 4. a first shaft; 5. a second shaft; 6. a first gear assembly; 61. a first gear; 62. a second gear; 7. a planetary gear mechanism; 71. a sun gear; 72. a planet wheel; 73. a ring gear; 74. a planet carrier; 8. a first clutch; 9. a brake; 10. a differential gear; 101. a second clutch; 102. a second gear assembly; 103. a third gear assembly.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides an electromechanical coupling transmission device, including an engine 1, a first electric machine 2, a second electric machine 3, a first shaft 4, a second shaft 5, a first gear assembly 6, a planetary gear mechanism 7, a first clutch 8, and a brake 9; the first motor 2 is connected with an output shaft of the engine 1, and the first motor 2 is connected with the second motor 3; preferably, the first shaft 4 and the second shaft 5 are arranged in parallel.
The planetary gear mechanism 7 comprises a sun gear 71, a planet gear 72, a ring gear 73 and a planet carrier 74 provided with transmission teeth; the sun gear 71 and the ring gear 73 are both meshed with the planet gears 72, and the planet carrier 74 is connected with the planet gears 72; the ring gear 73 and the sun gear 71 are both connected to the first shaft 4; the output shaft of the second motor 3 is connected with the ring gear 73, and the brake 9 is used for braking the sun gear 71; the first clutch 8 is mounted on the planetary gear mechanism 7 and is used for controlling one degree of freedom of the planetary gear mechanism 7; it can be understood that the planet wheels 72 can be provided in a plurality according to actual requirements, and a plurality of the planet wheels 72 are all located in the ring gear 73 and are all meshed with the internal teeth of the ring gear 73; the sun gear 71 is positioned in the middle of a plurality of planet gears 72, and all the planet gears 72 of the sun gear 71 are meshed; all of the planet gears 72 are rotatably mounted on the planet carrier 74.
Further, the brake 9 includes a first coupling portion mounted on the transmission housing, and a second coupling portion mounted on the sun gear 71, when the first coupling portion and the second coupling portion are coupled, the sun gear 71 will be locked on the transmission housing, and the sun gear 71 will not rotate. The first clutch 8 includes a third engaging portion mounted on the ring gear 73, and a fourth engaging portion mounted on the sun gear 71; when the third joint portion and the fourth joint portion are joined, the sun gear 71 and the ring gear 73 are of an integral structure.
The first clutch 8 is connected between the sun gear 71 and the ring gear 73; or the first clutch 8 is connected between the sun gear 71 and the carrier 74; or the first clutch 8 is connected between the ring gear 73 and the carrier 74. It is to be understood that the first clutch 8 is connected between any two of the three of the sun gear 71, the ring gear 73, and the carrier 74, and the first clutch 8 can control one degree of freedom of the planetary gear mechanism 7 by a structure between any two of the three of the sun gear 71, the ring gear 73, and the carrier 74.
The first gear assembly 6 comprises a first gear 61 and a second gear 62 both mounted (by interference fit or the like) on the second shaft 5; the first gear 61 meshes with the gear teeth, and the second gear 62 meshes with a differential of an automobile differential. It will be appreciated that the automotive differential is connected to the left and right wheels of the automobile by left and right axle shafts, such that rotation of the second gear 62 will drive rotation of the automobile wheels through the differential.
Specifically, the electromechanical coupling transmission device has a pure electric first gear mode, a pure electric second gear mode and a range extending mode;
when the electromechanical coupling transmission device is in a pure electric first gear mode, the brake 9 is locked, the first clutch 8 is separated, and the second motor 3 drives the wheels of the automobile to rotate; specifically, the rotation of the second electric machine 3 drives the wheels of the automobile to rotate sequentially through the gear ring 73, the planetary gear 72, the transmission teeth of the planetary carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
When the electromechanical coupling transmission device is in a pure electric second-gear mode, the brake 9 is opened, and the first clutch 8 is combined with the second motor 3 to drive the wheels of the automobile to rotate. Specifically, the rotation of the second electric machine 3 drives the wheels of the automobile to rotate sequentially through the ring gear 73, the first clutch 8, the sun gear 71, the planet gear 72, the transmission teeth of the planet carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
When the electromechanical coupling transmission device is in a range extending mode, the first motor 2 generates electricity under the driving of the engine 1 and transmits the electricity to the second motor 3, and the second motor 3 drives the wheels of the automobile to rotate. Specifically, because the first motor 2 is directly connected to the output shaft of the engine 1, the rotating part of the engine drives the first motor 2 to generate power, and because the first motor 2 is connected to the second motor 3, the power of the first motor 2 can be transmitted to the second motor 3, so as to improve the range of the second motor 3, that is, the first motor 2 can be used as a range extender.
In this embodiment, the second motor 3 of the electromechanical coupling transmission device has two gears, the number of gears in the intermediate transmission in the pure electric first-gear mode is small, and the torque transmitted to the second gear 62 is large and the rotating speed is small, so that the hill start requirement of the automobile can be met, the number of gears in the intermediate transmission in the pure electric second-gear mode is large, and the rotating speed transmitted to the second gear 62 is large and the torque is small, so that the high-speed requirement of the automobile can be met. The manufacturing cost of the second motor 3 is reduced.
The utility model discloses in, first motor 2 lug connection the output shaft of engine 1, engine 1 need not to pass through planetary gear 7 can directly drive first motor 2 rotates, so the rotation of engine 1 is not restricted to the influence of 7 rotational speed upper limits of planetary gear 7, engine 1 can obtain better dynamic property. In addition, the engine 1 and the first motor 2 can be used as a range extender, at the moment, the engine 1 and the first motor 2 are not used for driving wheels of an electric vehicle to rotate, and the range extender can provide electric power for the second motor 3 to drive the wheels of the electric vehicle to rotate, so that the electric vehicle is equivalent to a pure electric vehicle, and the emission of tail gas of the electric vehicle is reduced. And the electromechanical coupling transmission device has simple structure and low manufacturing cost.
In an embodiment, as shown in fig. 2, 3, 6, 8 and 9, the electro-mechanical coupling transmission device further includes a second gear assembly 102, and the first motor 2 is connected to the output shaft of the engine 1 through the second gear assembly 102. It can be understood that the second gear assembly 102 includes at least two third gears that are meshed with each other, the number of the third gears can be set to 2, 3, 4, etc. according to actual requirements, and the first motor 2 can drive the wheels of the vehicle to rotate through a plurality of the third gears, so as to further meet the requirement of the vehicle for high speed, and improve the applicability of the vehicle.
In an embodiment, as shown in fig. 7 to 9, the electromechanical coupling transmission device further comprises a third gear assembly 103, and the second motor 3 is connected with the ring gear 73 through the third gear assembly 103. It is understood that the third gear assembly 103 includes at least two fourth gears engaged with each other, and the number of the fourth gears can be set to 2, 3, 4, etc. according to actual requirements. In this embodiment, the second motor 3 can be through a plurality of the fourth gear drives the auto wheel and rotates to further satisfy the high-speed demand of car, improved the suitability of car.
In one embodiment, as shown in fig. 4-9, the electro-mechanically coupled transmission further includes a second clutch 101; the output shaft of the engine 1 is connected to the first shaft 4 via the second clutch 101. As can be appreciated, the second clutch 101 includes a fifth engaging portion mounted on the output shaft of the engine 1, and a sixth engaging portion mounted on the first shaft 4; when the fifth combining part is combined with the sixth combining part, the engine 1 and/or the first motor 2 drive the wheels of the automobile to rotate through the second clutch 101, so that the driving modes of the automobile are increased, and the driving experience of the automobile is improved.
The following driving modes of the electromechanical coupling transmission are described by taking the case where the output shaft of the engine 1 is connected to the first shaft 4 via the second clutch 101, and the ring gear 73 is connected to the sun gear 71 via the first clutch 8 (that is, the embodiment in fig. 4 is described); the driving method of other embodiments is similar to that of the structure, and is not described herein again.
The electromechanical coupling transmission device has a pure electric first gear mode and a pure electric second gear mode;
when the electromechanical coupling transmission device is in a pure electric first gear mode, the brake 9 is locked, the first clutch 8 and the second clutch 101 are both separated, and the second motor 3 drives the wheels of the automobile to rotate; specifically, the rotation of the second electric machine 3 drives the wheels of the automobile to rotate sequentially through the gear ring 73, the planetary gear 72, the transmission teeth of the planetary carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
When the electromechanical coupling transmission device is in a pure electric second-gear mode, the brake 9 is opened, the first clutch 8 is combined, the second clutch 101 is separated, and the second motor 3 drives the automobile wheels to rotate. Specifically, the rotation of the second electric machine 3 drives the wheels of the automobile to rotate sequentially through the ring gear 73, the first clutch 8, the sun gear 71, the planet gear 72, the transmission teeth of the planet carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
In this embodiment, the electromechanical coupling transmission device includes a pure electric first gear mode and a pure electric second gear mode, that is, the second motor 3 has two gears, there are fewer gears in the middle of the pure electric first gear mode, and the torque transmitted to the second gear 62 is large and the rotation speed is small, so as to meet the requirement of vehicle hill start.
In one embodiment, as shown in fig. 4, the range-extended modes further include a series hybrid first gear mode and a series hybrid second gear mode; it can be understood that when the automobile is in the series hybrid first gear mode or the series hybrid second gear mode, the engine 1 can drive the first motor 2 to generate power, and the power of the first motor 2 can drive the wheels of the automobile to rotate through the second motor 3, so that the cruising range of the automobile is improved.
When the electromechanical coupling transmission device is in a series hybrid first-gear mode, the brake 9 is locked, the first clutch 8 and the second clutch 101 are both separated, the first motor 2 is driven by the engine 1 to generate electricity and transmit the electricity to the second motor 3, and the second motor 3 drives the automobile wheels to rotate; specifically, a rotation path of the second motor 3 for driving the wheels of the vehicle to rotate is the same as a driving path in the pure electric first gear mode, and is not described herein again. Further, the rotation of the engine 1 will drive the first motor 2 to generate power, and the electric energy of the first motor 2 can be transmitted to the second motor 3, so as to increase the endurance mileage of the second motor.
When the electromechanical coupling transmission device is in a series hybrid-driven second-gear mode, the brake 9 is opened, the first clutch 8 is combined, the second clutch 101 is separated, the first motor 2 generates electricity under the driving of the engine 1 and transmits the electricity to the second motor 3, and the second motor 3 drives the automobile wheels to rotate. Specifically, a rotation path of the second motor 3 for driving the wheels of the vehicle to rotate is the same as a driving path in the pure electric second gear mode, and is not described herein again. Further, the rotation of the engine 1 will drive the first motor 2 to generate power, and the electric energy of the first motor 2 can be transmitted to the second motor 3, so as to increase the endurance mileage of the second motor.
In one embodiment, as shown in FIG. 4, the electro-mechanically coupled transmission has a parallel hybrid first gear mode and a parallel hybrid second gear mode; it can be understood that, when the automobile is in the parallel hybrid first-gear mode or the parallel hybrid second-gear mode, the first motor 2, the second motor 3 and the engine 1 can drive the automobile wheels to rotate, so that the dynamic property of the automobile is further improved, different driving modes can be selected under different working conditions of the automobile, and the applicability of the electromechanical coupling transmission device is improved.
When the electromechanical coupling transmission device is in a parallel hybrid first-gear mode, the brake 9 is locked, the first clutch 8 is separated, the second clutch 101 is combined, and the engine 1, the first motor 2 and the second motor 3 drive the wheels of the automobile to rotate; specifically, the engine 1 and the first electric machine 2 rotate simultaneously, and this rotation drives the wheels of the automobile to rotate sequentially through the second clutch 101, the first shaft 4, the ring gear 73, the planetary gear 72, the transmission teeth of the planetary carrier 74, the first gear 61, the second shaft 5, the second gear 62, and the differential gear 10; meanwhile, the rotation of the second motor 3 drives the wheels of the automobile to rotate sequentially through the gear ring 73, the planet gear 72, the transmission gear of the planet carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
Further, when the electromechanical coupling transmission device is in a parallel hybrid first-gear mode, the second electric machine 3 can also be in a non-operating mode and in a power generation mode; when the second motor 3 is in a non-operating mode, the second motor 3 does not actively output power, at this time, the engine 1 can drive the first motor 2 to generate power, and both the first motor 2 and the engine 1 can drive the wheels of the automobile to rotate; when the second electric machine 3 is in the power generation mode, the torque output by the second electric machine 3 to the first shaft 4 via the ring gear 73 is smaller than the torque output by the first electric machine 2 and the engine 1 to the first shaft 4, and the first electric machine 2 and the engine 1 drive the second electric machine 3 to generate power via the second clutch 101, the first shaft 4 and the ring gear 73.
When the electromechanical coupling transmission device is in a parallel hybrid second-gear mode, the brake 9 is opened, the first clutch 8 and the second clutch 101 are combined, and the engine 1, the first motor 2 and the second motor 3 drive the wheels of the automobile to rotate. Specifically, the engine 1 and the first electric machine 2 rotate simultaneously, and this rotation drives the wheels of the automobile to rotate sequentially via the second clutch 101, the first shaft 4, the ring gear 73, the first clutch 8, the sun gear 71, the planetary gear 72, the transmission teeth of the carrier 74, the first gear 61, the second shaft 5, the second gear 62, and the differential gear 10; meanwhile, the rotation of the second motor 3 drives the wheels of the automobile to rotate sequentially through the gear ring 73, the first clutch 8, the sun gear 71, the planet gear 72, the transmission teeth of the planet carrier 74, the first gear 61, the second shaft 5, the second gear 62 and the differential gear 10.
Further, when the electromechanical coupling transmission device is in a parallel hybrid second-gear mode, the second motor 3 can also be in a non-operating mode and a power generation mode, the second motor 3 does not actively output power, at this time, the engine 1 can drive the first motor 2 to generate power, and both the first motor 2 and the engine 1 can drive the wheels of the automobile to rotate; when the second electric machine 3 is in the power generation mode, the torque output by the second electric machine 3 to the first shaft 4 via the ring gear 73 is smaller than the torque output by the first electric machine 2 and the engine 1 to the first shaft 4, and the first electric machine 2 and the engine 1 drive the second electric machine 3 to generate power via the second clutch 101, the first shaft 4 and the ring gear 73.
In summary, the driving modes of the electromechanical coupling transmission device are shown in table 1:
TABLE 1 drive mode table for an electromechanically coupled transmission
Another embodiment of the present invention further provides an automobile, including the electromechanical coupling transmission device.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An electromechanical coupling transmission, comprising an engine, a first electric machine, a second electric machine, a first shaft, a second shaft, a first gear assembly, a planetary gear mechanism, a brake and a first clutch mounted on the planetary gear mechanism; the first motor is connected with an output shaft of the engine;
the planetary gear mechanism comprises a sun gear, a planet gear, a gear ring and a planet carrier provided with transmission teeth; the sun gear and the gear ring are both meshed with the planet gear, and the planet carrier is connected with the planet gear; the gear ring and the sun gear are both connected with the first shaft; an output shaft of the second motor is connected with the gear ring, and the brake is used for braking the sun gear;
the first gear assembly comprises a first gear and a second gear both mounted on the second shaft; the first gear is meshed with the transmission gear, and the second gear is meshed with a differential gear of an automobile differential.
2. The electro-mechanically coupled transmission of claim 1, further comprising a second gear assembly, wherein the first electric machine is coupled to the output shaft of the engine through the second gear assembly.
3. The electro-mechanically coupled transmission of claim 1, further comprising a third gear assembly, wherein the second electric machine is connected to the ring gear through the third gear assembly.
4. The electro-mechanically coupled transmission of claim 1, wherein said first axis and said second axis are parallel to each other.
5. The electro-mechanically coupled transmission of claim 1, further comprising a second clutch; an output shaft of the engine is connected to the first shaft through the second clutch.
6. An electro-mechanically coupled transmission, according to claim 1, wherein said first clutch is connected between said sun gear and said ring gear.
7. An electro-mechanically coupled transmission, as set forth in claim 1, wherein said first clutch is connected between said sun gear and said planet carrier.
8. An electro-mechanically coupled transmission, as set forth in claim 1, wherein said first clutch is connected between said ring gear and said planet carrier.
9. A motor vehicle comprising an electro-mechanically coupled transmission according to any one of claims 1 to 8.
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| CN202120205970.0U CN215204407U (en) | 2021-01-25 | 2021-01-25 | Electromechanical coupling transmission device and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120205970.0U CN215204407U (en) | 2021-01-25 | 2021-01-25 | Electromechanical coupling transmission device and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789651A (en) * | 2021-01-25 | 2022-07-26 | 广州汽车集团股份有限公司 | Electromechanical coupling transmission device and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789651A (en) * | 2021-01-25 | 2022-07-26 | 广州汽车集团股份有限公司 | Electromechanical coupling transmission device and automobile |
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