Powertrain and vehicle

Abstract

This utility model discloses a powertrain for a vehicle and a vehicle, relating to the field of vehicle engineering. The powertrain includes a planetary reducer, a first motor, a reducer, and a differential. The planetary reducer includes a sun gear, a planet carrier, and a ring gear that cooperate with each other. The stator of the first motor is disposed on the outer periphery of the planetary reducer, and the rotor of the first motor is connected to the sun gear and disposed on the outer periphery of the stator. The input end of the reducer is connected to the planet carrier. The differential is connected to the output end of the reducer. According to the powertrain of this utility model, by disposing the stator of the first motor on the outer periphery of the planetary reducer and placing the rotor on the outer periphery of the stator, efficient space utilization and improved motor performance are achieved.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to a powertrain for vehicles and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicle technology, powertrains are equipped with components such as motors, reducers, and differentials to achieve efficient power transmission and drive functions.

[0003] In related technologies, the powertrain has a complex overall structure, occupies a large space, and is not conducive to the optimization of vehicle layout. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a powertrain for a vehicle. According to the powertrain of this invention, by placing the stator of the first motor on the outer periphery of the planetary reducer and placing the rotor on the outer periphery of the stator, efficient space utilization and improved motor performance are achieved.

[0005] This utility model also proposes a vehicle having the above-mentioned powertrain.

[0006] The powertrain according to this utility model is used in a vehicle. The powertrain includes: a planetary reducer, the planetary reducer including a sun gear, a planet carrier, and a ring gear that cooperate with each other; a first motor, the stator of the first motor being disposed on the outer periphery of the planetary reducer, and the rotor of the first motor being connected to the sun gear and disposed on the outer periphery of the stator of the first motor; a reducer, the input end of the reducer being connected to the planet carrier; and a differential, the differential being connected to the output end of the reducer.

[0007] According to the powertrain of this utility model, by setting up a planetary reducer, space is effectively utilized, which helps to optimize vehicle design. By placing the stator of the first motor on the outer periphery of the planetary reducer, it is possible to compactly integrate the first motor and the planetary reducer. By placing the rotor of the first motor on the outer periphery of the stator of the first motor, not only is space saved for the arrangement of the planetary reducer, but the power density and torque density of the first motor are also improved.

[0008] According to some embodiments of the present invention, the powertrain further includes a power unit, which is connected to the planetary carrier.

[0009] According to some embodiments of the present invention, the power unit is provided with an output shaft, the output shaft is connected to the planetary carrier, and the output shaft passes through the sun gear and is connected to the reducer; the power assembly further includes a transmission component, which is disposed at the end of the rotor away from the power unit and connects the rotor to the sun gear.

[0010] According to some embodiments of the present invention, the stator is connected to the gear ring.

[0011] According to some embodiments of the present invention, the powertrain includes: a clutch, the clutch having a first engagement portion and a second engagement portion that can be selectively engaged, the first engagement portion being connected to the input end of the reducer, and the second engagement portion being connected to the output shaft of the power unit.

[0012] According to some embodiments of the present invention, the reducer includes: a first shaft, on which the first joint portion is provided; and a second shaft, which is linked to the first shaft and connected to the input end of the differential.

[0013] According to some embodiments of the present invention, the powertrain further includes a second motor, the output shaft of which is linked to the second shaft.

[0014] According to some embodiments of the present invention, a first shaft gear is provided on the first shaft, and a second shaft first gear, a second shaft second gear, and a second shaft third gear are provided on the second shaft; wherein the first shaft gear meshes with the second shaft first gear, the second shaft second gear is linked with the output shaft of the second motor, and the second shaft third gear is linked with the input end of the differential.

[0015] According to some embodiments of this utility model, the motor is constructed as an electric generator.

[0016] The vehicle according to this utility model is briefly described below.

[0017] The vehicle according to this utility model includes the powertrain described in any of the above embodiments. Because the vehicle according to this utility model includes the powertrain described in any of the above embodiments, it achieves efficient space utilization and performance improvement.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a structural layout diagram of a powertrain according to an embodiment of the present invention.

[0021] Figure label:

[0022] 11. Planetary gear reducer;

[0023] 12. First motor; 121. Stator; 122. Rotor;

[0024] 13. Reducer; 131. First shaft; 1311. First shaft gear; 132. Second shaft; 1321. Second shaft first gear; 1322. Second shaft second gear; 1323. Second shaft third gear;

[0025] 14. Differential; 15. Power unit; 16. Transmission components; 17. Clutch; 18. Second motor. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In related technologies, the powertrain has a complex overall structure, occupies a large space, and is not conducive to the optimization of vehicle layout.

[0030] The following is for reference. Figure 1 A powertrain according to an embodiment of the present invention is described.

[0031] like Figure 1 As shown, the powertrain according to this invention is used in a vehicle. The powertrain includes a planetary reducer 11, which is used to reduce speed and increase torque. The planetary reducer 11 includes a sun gear, a planet carrier, and a ring gear that mesh with each other. The sun gear is located at the center, and the planet carrier rotates around the sun gear and carries multiple planetary gears, which mesh with both the sun gear and the ring gear. Compared to the parallel shaft reducer 13 in related technologies, the planetary reducer 11 has higher transmission efficiency and a more compact structure. By setting up the planetary reducer 11, space is effectively utilized, which helps to optimize vehicle design.

[0032] The powertrain also includes a first motor 12, whose stator 121 is disposed on the outer periphery of the planetary reducer 11, facilitating the compact integration of the first motor 12 and the planetary reducer 11. The rotor 122 of the first motor 12 is connected to the sun gear and disposed on the outer periphery of the stator 121 of the first motor 12. The first motor 12 can be configured as a generator; it can also be configured as an electric motor. When acting as a generator, the rotor 122 of the first motor 12 is driven to rotate via the transmission mechanism of the planetary reducer 11, achieving energy recovery and utilization, and improving the vehicle's energy efficiency. When acting as an electric motor, the first motor 12 can receive electrical energy from the battery system, drive the sun gear or planetary carrier to rotate, and then output power to provide the necessary power support for vehicle operation. By disposing of the rotor 122 of the first motor 12 on the outer periphery of the stator 121 of the first motor 12, not only is space saved for the arrangement of the planetary reducer 11, but the power density and torque density of the first motor 12 are also improved.

[0033] The powertrain also includes a reduction gear 13 and a differential 14. The input end of the reduction gear 13 is connected to the planetary carrier to further reduce the speed and increase the torque to meet the vehicle's driving needs. The differential 14 is connected to the output end of the reduction gear 13 to distribute power to the left and right wheels, ensuring that the left and right wheels can rotate at different speeds when the vehicle is turning, thereby improving the vehicle's handling and stability.

[0034] Therefore, according to the powertrain of this utility model, by setting the stator 121 of the first motor 12 on the outer periphery of the planetary reducer 11 and placing the rotor 122 on the outer periphery of the stator 121, efficient use of space and improvement of motor performance are achieved.

[0035] According to some embodiments of this utility model, such as Figure 1 As shown, the powertrain also includes a power unit 15, which is connected to a planetary carrier. The power output from the power unit 15 is transmitted to the planetary reducer 11 via the planetary carrier. On one hand, the power output from the power unit 15 can be transmitted to the first motor 12 via the planetary reducer 11. The first motor 12 operates as a generator, converting mechanical energy into electrical energy to achieve the charging function. On the other hand, the power output from the power unit 15 can be transmitted to the reducer 13, and then to the differential 14, ultimately driving the wheels. The powertrain can flexibly adjust the power distribution according to the actual operating needs of the vehicle, thereby improving energy efficiency and the overall performance of the vehicle. Specifically, the power unit 15 can be either an engine or a drive motor.

[0036] According to some embodiments of this utility model, such as Figure 1 As shown, the power unit 15 is equipped with an output shaft connected to the planetary carrier, and the output shaft passes through the sun gear and connects to the reducer 13. The power assembly also includes a transmission component 16, which is located at the end of the rotor 122 away from the power unit 15 and connects the rotor 122 to the sun gear. The power output from the power unit 15 can be directly transmitted to the planetary carrier through the output shaft. After the speed is reduced and the torque is increased by the planetary reducer 11, the power is further transmitted to the transmission component 16 through the sun gear. By setting the transmission component 16, effective coupling between the rotor 122 and the planetary gear system is achieved. The power generated by the power unit 15 is reduced in speed and increased in torque through the gear meshing of the planetary reducer 11. Subsequently, the enhanced power is output through the sun gear and transmitted to the rotor 122 via the transmission component 16, ultimately driving the rotor 122 to work, enabling the first motor 12 to generate electricity.

[0037] According to some embodiments of this utility model, the stator 121 is connected to the gear ring. By directly connecting the gear ring to the stator 121, efficient integration between the first motor 12 and the planetary reducer 11 is achieved, simplifying the structure of the powertrain, further optimizing the spatial layout, making the overall design more compact, and enhancing the stability of the motor structure.

[0038] According to some embodiments of this utility model, for example Figure 1 As shown, the powertrain includes a clutch 17, which has a first engagement portion and a second engagement portion that can be selectively engaged. The first engagement portion is connected to the input end of the reducer 13, and the second engagement portion is connected to the output shaft of the power unit 15. The clutch 17 allows for flexible control of power transmission between the power unit 15 and the reducer 13. When the first engagement portion is engaged with the second engagement portion, the power output from the power unit 15 can be transmitted to the reducer 13 via the output shaft, and then distributed to the wheels via the differential 14 to drive the vehicle. When the first engagement portion is disengaged from the second engagement portion, the power transmission between the power unit 15 and the reducer 13 is cut off, and the power output from the power unit 15 is used to drive the first motor 12 to generate electricity. The clutch 17 enables the powertrain to switch between multiple operating modes under different conditions, which not only improves the vehicle's power performance and energy efficiency but also enhances the adaptability and reliability of the powertrain, meeting diverse driving needs.

[0039] According to some embodiments of this utility model, such as Figure 1 As shown, the reducer 13 includes a first shaft 131 and a second shaft 132. A first engagement portion is provided on the first shaft 131. The second shaft 132 is linked to the first shaft 131 and connected to the input end of the differential 14. Through the linkage between the first shaft 131 and the second shaft 132, efficient power transmission and distribution can be achieved. When the first shaft 131 receives power input through the first engagement portion, the power, after being reduced in speed and increased in torque by the reducer 13, is transmitted to the input end of the differential 14 through the second shaft 132, and then distributed to the left and right wheels to drive the vehicle.

[0040] According to some embodiments of this utility model, such as Figure 1As shown, the powertrain also includes a second motor 18, which is a drive motor for outputting power. The output shaft of the second motor 18 is linked to the second shaft 132. Through the linkage between the second motor 18 and the second shaft 132, diversified power transmission and distribution can be achieved. When the second motor 18 is running, its output shaft transmits power to the second shaft 132, which then distributes the power to the left and right wheels through the reducer 13 and the differential 14, driving the vehicle. By setting the second motor 18, the vehicle can be driven by electric power, providing not only an additional power source but also enabling flexible switching of power output under different operating conditions. The second motor 18 allows the powertrain to operate in pure electric mode. When the power unit 15 is not working, the second motor 18 can drive the vehicle independently, achieving zero-emission driving; while in hybrid mode, the second motor 18 can work together with the power unit 15 to provide stronger power output or higher energy efficiency.

[0041] According to some embodiments of this utility model, such as Figure 1 As shown, a first shaft gear 1311 is provided on the first shaft 131, and a second shaft first gear 1321, a second shaft second gear 1322, and a second shaft third gear 1323 are provided on the second shaft 132. The first shaft gear 1311 meshes with the second shaft first gear 1321, the second shaft second gear 1322 is linked with the output shaft of the second motor 18, and the second shaft third gear 1323 is linked with the input end of the differential 14.

[0042] The meshing of the first shaft gear 1311 and the second shaft first gear 1321 enables efficient power transmission and distribution. When the first shaft 131 receives power input through the first shaft gear 1311, the power is transmitted to the second shaft 132 through the second shaft first gear 1321, and then transmitted to the input end of the differential 14 through the second shaft third gear 1323, thereby distributing the power to the left and right wheels and driving the vehicle.

[0043] The second motor 18 can directly participate in power transmission by being linked to the output shaft of the second shaft 1322 via the second gear 1322. When the second motor 18 is running, its output shaft transmits power to the second shaft 132 via the second gear 1322, and then to the differential 14 via the third gear 1323, thus driving the vehicle.

[0044] According to some embodiments of this utility model, the motor is configured as an electric generator. By configuring the motor as an electric generator, the powertrain can operate efficiently under various working conditions. On the one hand, when the motor operates as an electric motor, it can receive electrical energy provided by the battery system, drive the sun gear or planetary carrier to rotate, and then output power to provide the power support required for vehicle driving; on the other hand, when the motor operates as a generator, it drives the rotor 122 of the motor to rotate through the transmission mechanism of the planetary reducer 11, converting mechanical energy into electrical energy, realizing energy recovery and utilization, thereby improving the energy efficiency of the vehicle.

[0045] The vehicle according to this utility model is briefly described below.

[0046] The vehicle according to this utility model includes the powertrain of any of the above embodiments. Because the vehicle according to this utility model includes the powertrain of any of the above embodiments, it achieves efficient space utilization and performance improvement.

[0047] The following reference Figure 1 This invention introduces various operating modes of a vehicle having a powertrain according to one embodiment of the present invention.

[0048] Power generation mode: When clutch 17 is disengaged, power unit 15 is in operation, and its output power drives the first motor 12, which acts as a generator, through planetary reducer 11, converting mechanical energy into electrical energy and charging the battery system.

[0049] Engine drive mode: When clutch 17 is engaged, power unit 15 operates as a power source, and the output power is transmitted to reducer 13, and then distributed to the wheels via differential 14 to drive the vehicle.

[0050] EV mode: Clutch 17 is disengaged, the second motor 18 operates as a power source, and its output power is transmitted to reducer 13, and then distributed to the wheels via differential 14 to drive the vehicle.

[0051] Parallel mode: When clutch 17 is engaged, power unit 15 and second motor 18 operate simultaneously as power sources. The power output from power unit 15 and second motor 18 are both transmitted to the final drive 13, and together they are distributed to the wheels via differential 14 to drive the vehicle.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powertrain for a vehicle, characterized by, include: Planetary reducer (11), the planetary reducer (11) includes a sun gear, a planet carrier and a ring gear that cooperate with each other; The first motor (12) has a stator (121) disposed on the outer periphery of the planetary reducer (11) and a rotor (122) connected to the sun gear and disposed on the outer periphery of the stator (121) of the first motor (12). A speed reducer (13), the input end of which is connected to the planetary carrier; Differential (14) is connected to the output end of the reducer (13).

2. The powertrain according to claim 1, characterized in that, Also includes: A power unit (15) is connected to the planetary carrier.

3. The powertrain of claim 2, wherein, The power unit (15) is provided with an output shaft, which is connected to the planet carrier and passes through the sun gear and is connected to the reducer (13); The powertrain further includes a transmission component (16), which is disposed at one end of the rotor (122) away from the power unit (15) and connects the rotor (122) to the sun gear.

4. The powertrain of claim 3, wherein, The stator (121) is connected to the gear ring.

5. The powertrain of claim 3, wherein, include: The clutch (17) is provided with a first engagement portion and a second engagement portion that can be selectively engaged. The first engagement portion is connected to the input end of the reducer (13), and the second engagement portion is connected to the output shaft of the power unit (15).

6. The powertrain of claim 5, wherein, The reducer (13) includes: A first shaft (131) is provided with the first joint portion; The second shaft (132) is linked to the first shaft (131) and connected to the input end of the differential (14).

7. The powertrain of claim 6, wherein, Also includes: The second motor (18) is linked to the second shaft (132).

8. The powertrain of claim 7, wherein, A first shaft gear (1311) is provided on the first shaft (131), and a second shaft first gear (1321), a second shaft second gear (1322), and a second shaft third gear (1323) are provided on the second shaft (132); wherein The first shaft gear (1311) meshes with the second shaft first gear (1321), the second shaft second gear (1322) is linked with the output shaft of the second motor (18), and the second shaft third gear (1323) is linked with the input end of the differential (14).

9. The powertrain of claim 1, wherein, The motor is constructed as an electric generator.

10. A vehicle characterized by comprising: Includes the powertrain described in any one of claims 1-9.

Images