Power drive system and vehicle

Abstract

The application discloses a power driving system and a vehicle. The power driving system comprises a first driving assembly, a second driving assembly and a third driving assembly. The first driving assembly comprises a first motor, a first gear set and a first driving shaft. The first gear set is in transmission connection between the first motor and the first driving shaft. The second driving assembly comprises a second motor, a second gear set and a second driving shaft. The second gear set is in transmission connection between the second motor and the second driving shaft. The third driving assembly comprises a power source, an output gear and a second brake. The output gear has a first part and a second part. The first part is in transmission connection with the first gear set. The second part is in transmission connection with the second gear set. The second brake is used for locking or unlocking the output gear. According to the power driving system, the structure is simple, the volume is small, the miniaturization design is facilitated, and the control difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of drive system technology, and in particular to a power drive system and a vehicle. Background Technology

[0002] With the rapid iteration of the automotive industry and new energy technologies, power drive systems are developing rapidly towards multi-functional integration. Existing power drive systems can already achieve the integration of multiple drive forms. However, while this multi-functional integrated drive system brings performance advantages, it inevitably increases the size and control difficulty of the drive system because it needs to integrate multiple independent power sources and match complex transmission and control mechanisms. Utility Model Content

[0003] This application provides a power drive system and a vehicle, aiming to improve the problem that the complexity of the transmission and control mechanisms of a multi-functional integrated power drive system leads to increased size and control difficulty of the drive system.

[0004] According to an embodiment of this application, a power drive system includes a first drive assembly comprising a first motor, a first gear set, and a first drive shaft, wherein the first gear set is driven between the first motor and the first drive shaft, and the first drive shaft is used to output power to a first driven component; a second drive assembly comprising a second motor, a second gear set, and a second drive shaft, wherein the second gear set is driven between the second motor and the second drive shaft, and the second drive shaft is used to output power to a second driven component; a third drive assembly comprising a power source, an output gear, and a second brake, wherein the power source is driven to the output gear, the output gear having a first portion and a second portion along the axial direction, the first portion being driven to the first gear set, the second portion being driven to the second gear set, and the second brake being connected between a housing and the output gear for locking or unlocking the output gear; and a transmission assembly driven to the first gear set, the second gear set, and the output gear, wherein when the output gear is locked, the first drive assembly and the second drive assembly operate independently.

[0005] According to the power drive system of the present application embodiment, by setting a third drive component and enabling the output gear of the third drive component to be simultaneously connected to the first drive component and the second drive component, the structure is simple, which can help simplify the power drive system. In addition, the output gear is relatively small, which helps to reduce the volume of the power drive system and thus optimize the spatial layout of the power drive system. Furthermore, the third drive component can not only transmit power to the first and second driven components respectively, but the output gear can also be simultaneously connected to the first and second drive components, so that the first, second, and third drive components can form a whole for mutual transmission of power energy. This can help to improve the energy for driving the first and second driven components to rotate, and also help to improve the rotational force of the first and second driven components, making it highly practical.

[0006] Therefore, the power drive system of this application embodiment can realize a dual-motor distributed drive mode and a multi-power centralized drive mode by controlling the locking or unlocking state of the output gear. In the dual-motor distributed drive mode, the first drive component and the second drive component drive the first and second driven components to rotate respectively. In the multi-power centralized drive mode, the first drive component, the second drive component, and the third drive component can form a whole that transmits power to each other. In addition, the switching of the above-mentioned multiple operating modes can be realized by controlling the engagement and disengagement state of the second brake, which helps to reduce the number of control mechanisms and thus can better reduce the control difficulty.

[0007] In some embodiments of this application, the first gear set includes a first planetary gear, the second gear set includes a second planetary gear, and the transmission component includes: a first gear ring and a first intermediate shaft gear, wherein the first gear ring meshes with the outside of the first planetary gear, and the first intermediate shaft gear meshes between the first gear ring and the first portion; a second gear ring and a second intermediate shaft gear, wherein the second gear ring meshes with the outside of the second planetary gear, and the second intermediate shaft gear meshes between the second gear ring and the second portion.

[0008] In the above example, the first drive component and the second drive component can drive the first driven component and the second driven component to rotate independently, respectively. The kinetic energy output by the first drive component and the second drive component can also be transferred to the third motor through the transmission component to realize energy recovery. The structure is simple and practical. Furthermore, in this example, the power transmission chain between the first drive component, the second drive component and the third drive component does not need to use a clutch, which can simplify the structure of the power drive system and also facilitate the miniaturization design of the power drive system.

[0009] In some embodiments of this application, the first gear set includes: a first sun gear, a first planet gear, and a first planet carrier; the first motor is drivenly connected to the first sun gear; the first planet gear is rotatably mounted on the first planet carrier; the first planet gear includes a first large planet gear and a first small planet gear coaxially connected; the first large planet gear meshes with the first sun gear; and the first planet carrier is drivenly connected to the first drive shaft. The second gear set includes: a second sun gear, a second planet gear, and a second planet carrier; the second motor is drivenly connected to the second sun gear; the second planet gear is rotatably mounted on the second planet carrier; the second planet gear includes a second large planet gear and a second small planet gear coaxially connected; the second large planet gear meshes with the second sun gear; and the second planet carrier is drivenly connected to the second drive shaft.

[0010] In the above example, the first gear set and the second gear set can drive the first and second driven components to rotate well through the above structural design. Moreover, the structures of the first gear set and the second gear set are relatively simple and the layout is relatively compact, which is conducive to the miniaturization of the first gear set and the second gear set, and thus conducive to the miniaturization of the power drive system.

[0011] In some embodiments of this application, the power source includes a third motor, and the third drive assembly further includes a planetary assembly, which includes a third sun gear, a third planet gear, a third ring gear, and a third planet carrier. The third planet gear and the output gear are both mounted on the third planet carrier, and the third planet gear meshes between the third sun gear and the third ring gear. The third motor is drively connected to the third ring gear.

[0012] In the above example, the planetary assembly has a simple structure and can better connect the power between the various components, making the power transmission between the third motor and the output gear more flexible. Therefore, the power drive system of this application has good flexibility.

[0013] In some embodiments of this application, the power source further includes an engine, which is connected to the third sun gear via a transmission.

[0014] In the above example, the planetary assembly enables flexible power transmission among the third motor, engine, and output gear. This allows for better control based on actual needs, such as the engine transmitting power to the first and second drive components, the third motor transmitting power to the first and second drive components, the engine transmitting power to the third motor to generate electricity, or both the engine and the third motor transmitting power to the first and second drive components. This provides good flexibility and strong practicality.

[0015] In some embodiments of this application, the third drive assembly further includes: a first brake connected between the housing and the third sun gear, for locking or unlocking the drive shaft between the engine and the third sun gear.

[0016] In the example above, by setting the first brake and the second brake, the power drive system can lock or unlock the third sun gear and the output gear when performing different driving modes, which is simple and convenient.

[0017] In some embodiments of this application, the third drive assembly further includes: a first clutch connected between the engine and the third sun gear, for controlling the power supply between the engine and the third sun gear.

[0018] In the example above, the first clutch can effectively deliver power to the engine and protect the engine when it is not running.

[0019] In some embodiments of this application, the power source includes a third motor, and the third drive assembly further includes a secondary drive gear, which is driven between the third motor and the output gear.

[0020] In the example above, the third motor can transmit power to the output gear relatively directly, and the structure is simple.

[0021] In some embodiments of this application, the power source further includes the engine, and the third drive assembly further includes a primary drive gear and a primary driven gear, the primary drive gear and the primary driven gear meshing with each other, the primary drive gear being drivenly connected to the output shaft of the engine, and the primary driven gear and the output gear being drivenly connected to the output shaft of the third motor.

[0022] In the example above, the power output of the engine and the third motor can be well realized through a first-stage driving gear and a first-stage driven gear, and the structure is simple.

[0023] In some embodiments of this application, the third drive assembly further includes: a second clutch connected between the engine and the first-stage drive gear for controlling the power supply between the engine and the first-stage drive gear; and / or, a second-stage drive gear and a third clutch, the second-stage drive gear being drive-connected between the first-stage driven gear and the output gear, and the third clutch being connected between the first-stage driven gear and the second-stage drive gear for controlling the power supply between the first-stage driven gear and the second-stage drive gear.

[0024] In the above example, by setting the second clutch and the third clutch, the power transmission of the engine can be better realized, as can the engine drive the third motor and realize the power generation and energy storage of the third motor.

[0025] In some embodiments of this application, the power drive system further includes a third brake connected between the housing and the secondary drive gear, for locking or unlocking the secondary drive gear.

[0026] In the example above, when neither the engine nor the third motor is started, the second-stage drive gear can be locked by the third brake. After the second-stage drive gear is locked, the output gear can also be locked and will not rotate, so that the first drive assembly and the second drive assembly can transmit power independently.

[0027] According to an embodiment of this application, the vehicle includes a first wheel, a second wheel, and a power drive system as described above. The first wheel is drive-connected to the first drive shaft, and the second wheel is drive-connected to the second drive shaft.

[0028] The vehicle according to the embodiments of this application, by being equipped with the power drive system of the above embodiments, and by providing a third drive component, and by enabling the output gear of the third drive component to be simultaneously connected to the first drive component and the second drive component, has a simple structure, which can help simplify the power drive system. In addition, the output gear is relatively small, which helps to reduce the volume of the power drive system, thereby helping to optimize the spatial layout of the power drive system. Furthermore, the third drive component can not only transmit power to the first wheel and the second wheel respectively, but the output gear can also be simultaneously connected to the first drive component and the second drive component, so that the first drive component, the second drive component and the third drive component can form a whole for mutual power transmission. This can help to increase the energy driving the first wheel and the second wheel to rotate, and at the same time help the first wheel and the second wheel to get out of trouble, which is highly practical.

[0029] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the power drive system according to the first embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the power drive system according to the second embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the working mode of the power drive system according to the first embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the working mode of the power drive system according to the second embodiment of this application.

[0034] Figure label: 100. Power drive system; 1. First driven component; 2. First drive shaft; 3. First motor; 4. First large planetary gear; 5. First small planetary gear; 6. First ring gear; 7. First intermediate shaft gear; 9. First sun gear; 10. First planetary carrier; 11. Second planetary carrier; 12. Second sun gear; 13. Second driven component; 14. Second drive shaft; 15. Second motor; 16. Second large planetary gear; 17. Second small planetary gear; 18. Second ring gear; 19. Second intermediate shaft gear; 20. Third motor; 21. Third sun gear; 22. Third planetary carrier; 23. Third planetary gear; 24. Third ring gear; 25. Second brake; 26. Output gear; 27. First brake; 28. First clutch; 29. ​​Engine; 30. First-stage driving gear; 31. First-stage driven gear; 32. Second-stage driving gear; 33. Second clutch; 34. Third clutch; 35. Third brake. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this application, it should be noted that, unless otherwise expressly 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] With the rapid iteration of the automotive industry and new energy technologies, power drive systems are developing rapidly towards multi-functional integration. Existing power drive systems can already achieve the integration of multiple drive forms. However, while this multi-functional integrated drive system brings performance advantages, it inevitably increases the size and control difficulty of the drive system because it needs to integrate multiple independent power sources and match complex transmission and control mechanisms.

[0039] like Figure 1 and Figure 2 As shown in the illustration, an embodiment of this application provides a power drive system 100, including a first drive assembly, a second drive assembly, and a third drive assembly. The first drive assembly includes a first motor 3, a first gear set, and a first drive shaft 2. The first gear set is driven between the first motor 3 and the first drive shaft 2, and the first drive shaft 2 is used to output power to a first driven component 1. The second drive assembly includes a second motor 15, a second gear set, and a second drive shaft 14. The second gear set is driven between the second motor 15 and the second drive shaft 14, and the second drive shaft 14 is used to output power to a second driven component 13. The third drive assembly includes a power source and an output gear 26. The power source is driven to the output gear 26. The output gear 26 has a first portion and a second portion along the axial direction. The first portion is driven to the first gear set, and the second portion is driven to the second gear set. The axial direction can refer to the direction of the rotation axis of the output gear 26.

[0040] According to the power drive system 100 provided in this application, the first drive component can drive the first driven component 1 to rotate independently, and the second drive component can drive the second driven component 13 to rotate independently. Furthermore, the output gear 26, which includes a first part and a second part along the axial direction, is connected to a first gear set and a second part is connected to a second gear set. When the first drive component drives the first driven component 1 to rotate, the power output by the first motor 3 can also be transmitted to the second driven component 13 sequentially through the first gear set, the output gear 26, the second gear set, and the second drive shaft 14. Similarly, when the second drive component drives the second driven component 13 to rotate, the power output by the second motor 15 can also be transmitted to the first driven component 1 sequentially through the second gear set, the output gear 26, the first gear set, and the first drive shaft 2. Additionally, for the third drive component, the power output by the power source can be transmitted to the first drive component and the second drive component respectively through the output gear 26, thereby driving the first driven component 1 and the second driven component 13 to rotate.

[0041] Therefore, based on the above power transmission, the above examples of this application have at least the following power drive modes: 1. Dual-motor drive mode, that is, the first drive component drives the first driven component 1 to rotate through the first motor 3, while the second drive component drives the second driven component 13 to rotate through the second motor 15.

[0042] II. Power Source + Dual Motor Drive Mode: The first drive assembly drives the first driven component 1 to rotate via the first motor 3, and the second drive assembly drives the second driven component 13 to rotate via the second motor 15. Simultaneously, the power output from the power source by the third drive assembly is transmitted to the first and second drive assemblies via the output gear 26, thereby driving the first and second driven components 1 and 13 to rotate. This mode effectively increases the energy required to drive the first and second driven components 1 and 13 to rotate. When the first driven component 1 is trapped, all three drive assemblies can transmit their output power to it, facilitating its escape. Similarly, it also helps the second driven component 13 escape when facing the same problem. Further details are omitted here.

[0043] In addition, the third drive component of this application can be directly connected to the first drive component and the second drive component through an output gear 26. The structure is simple and can help simplify the power drive system 100. Moreover, the output gear 26 is relatively small, which helps to reduce the volume of the power drive system 100 and thus helps to optimize the spatial layout of the power drive system 100.

[0044] Furthermore, the third drive assembly also includes a second brake 25, which is connected between the housing and the output gear 26 for locking or unlocking the output gear 26. The power drive system 100 also includes a transmission assembly, which is drively connected between the first gear set, the second gear set and the output gear 26, so that when the output gear 26 is locked, the first drive assembly and the second drive assembly can operate independently.

[0045] For example, taking the case where the power source does not output power and the output gear 26 does not rotate, since the output gear 26 does not rotate, when the first motor 3 of the first drive assembly outputs power, the first motor 3 can smoothly drive the first gear set to rotate through the transmission assembly, thereby causing the first driveable component 1 to rotate. Similarly, the second motor 15 can smoothly drive the second gear set to rotate, thereby causing the second driveable component 13 to rotate. In this example, the mode is that the first motor 3 and the second motor 15 drive the first driveable component 1 and the second driveable component 13 to rotate, respectively.

[0046] In the above example, by setting up a transmission component, the first drive component and the second drive component can independently drive the first driven component 1 and the second driven component 13 to rotate, respectively. The kinetic energy output by the first and second drive components can also be transferred to the third motor 20 through the transmission component, achieving energy recovery. The structure is simple and highly practical. Furthermore, in this example, a clutch is not required in the power transmission chain between the first, second, and third drive components, which simplifies the structure of the power drive system 100 and facilitates its miniaturization. Simultaneously, switching between the multiple operating modes can be achieved by controlling the engagement and disengagement of the second brake 25, which helps reduce the number of control mechanisms and thus reduces control complexity.

[0047] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the first gear set includes a first planetary gear 5, the second gear set includes a second planetary gear 17, and the transmission assembly includes a first gear ring 6, a first intermediate shaft gear 7, a second gear ring 18, and a second intermediate shaft gear 19. The first gear ring 6 meshes with the outside of the first planetary gear 5, the first intermediate shaft gear 7 meshes with the first gear ring 6 and the first part, the second gear ring 18 meshes with the outside of the second planetary gear 17, and the second intermediate shaft gear 19 meshes with the second gear ring 18 and the second part.

[0048] For example, taking the case where the power source does not output power and the output gear 26 does not rotate, when the first motor 3 of the first drive assembly outputs power, the first motor 3 can drive the first planetary gear 5 to rotate. Since the output gear 26 does not rotate, the first gear ring 6 and the first intermediate shaft gear 7 also do not rotate. When the first motor 3 drives the first planetary gear 5 to rotate, the first planetary gear 5 meshes with the internal teeth of the first gear ring 6. The first planetary gear 5 can rotate along the radially inner tooth surface of the first gear ring 6, that is, the first planetary gear 5 not only rotates on its own axis but also revolves around the inner side of the first gear ring 6. For example, the first... The planetary gear 5 can be connected to the first drive shaft 2 via the first planetary carrier 10. That is, the rotation axis of the first planetary carrier 10 and the axis of the first drive shaft 2 are both collinear with the axis of the first gear ring 6. Thus, when the first planetary gear 5 revolves, it drives the first planetary carrier 10 and the first output shaft to rotate, thereby causing the first driven component 1 to rotate. Similarly, when the second motor 15 drives the second planetary gear 17 to rotate, it can cause the second driven component 13 to rotate. This will not be elaborated here. In this example, the first motor 3 and the second motor 15 drive the first driven component 1 and the second driven component 13 to rotate, respectively.

[0049] For example, taking the case where the power source does not output power but the output gear 26 can rotate, as can be seen from the above example, when the first motor 3 drives the first planetary gear 5 to rotate, the first planetary gear 5 can not only rotate on its own axis but also revolve around the sun. Similarly, when the second motor 15 drives the second planetary gear 17 to rotate, the second planetary gear 17 can also not only rotate on its own axis but also revolve around the sun. Thus, the first planetary gear 5 can transmit power to the first part of the output gear 26 through the first gear ring 6 and the first intermediate shaft gear 7, and the second planetary gear 17 can transmit power to the second part of the output gear 26 through the second gear ring 18 and the second intermediate shaft gear 19. Thus, the output gear 26 can rotate, thereby driving the third motor 20 to rotate. The rotation of the third motor 20 can generate electricity and store energy. This mode can be applied to the kinetic energy recovery mode. When the first driven component 1 and the second driven component 13 stop rotating, and the first motor 3 and the second motor 15 stop outputting power, the power drive system 100 can realize energy recovery through the above power transmission chain.

[0050] In the above example, by setting a transmission component, the first drive component and the second drive component can independently drive the first driven component 1 and the second driven component 13 to rotate. The kinetic energy output by the first drive component and the second drive component can also be transferred to the third motor 20 through the transmission component to realize energy recovery. The structure is simple and practical. In addition, in this example, the power transmission chain between the first drive component, the second drive component and the third drive component does not need to use a clutch, which can simplify the structure of the power drive system 100 and also facilitate the miniaturization design of the power drive system 100.

[0051] In some embodiments of this application, such as Figure 1 and Figure 2 As shown, the first gear set includes: a first sun gear 9, a first planet gear, and a first planet carrier 10. A first motor 3 is driven by the first sun gear 9. The first planet gear is rotatably mounted on the first planet carrier 10. The first planet gear includes a first large planet gear 4 and a first small planet gear 5 coaxially connected. The first large planet gear 4 meshes with the first sun gear 9, and the first small planet gear 5 meshes with the first ring gear 6. The first planet carrier 10 is driven by the first drive shaft 2. The second gear set includes: a second sun gear 12, a second planet gear, and a second planet carrier 11. A second motor 15 is driven by the second sun gear 12. The second planet gear is rotatably mounted on the second planet carrier 11. The second planet gear includes a second large planet gear 16 and a second small planet gear 17 coaxially connected. The second large planet gear 16 meshes with the second sun gear 12, and the second small planet gear 17 meshes with the second ring gear 18. The second planet carrier 11 is driven by the second drive shaft 14.

[0052] In other words, the first motor 3 can drive the first sun gear 9 to rotate. The first sun gear 9 can drive the first large planetary gear 4 to rotate on its own axis while revolving around the axis of rotation of the first sun gear 9. This allows the first small planetary gear 5 to also rotate on its own axis while revolving around the axis of rotation of the first sun gear 9. The axis of revolution of the first small planetary gear 5 coincides with the axis of the first drive shaft 2, thus enabling the first planetary carrier 10 to effectively drive the first drive shaft 2 to rotate when it rotates, thereby driving the first driven component 1 to rotate. The first gear set has a simple structure and is combined with... Figure 1 It is evident that the layout of the first gear set is relatively compact, which is conducive to the miniaturization of the first gear set, and thus to the miniaturization of the power drive system 100.

[0053] Similarly, the second gear set, through the above structure, can also effectively drive the second driven component 13 to rotate. The second gear set has a simple structure and is well-integrated. Figure 1 It is evident that the layout of the second gear set is relatively compact, which is conducive to the miniaturization of the second gear set, and thus to the miniaturization of the power drive system 100.

[0054] In the above example, the first gear set and the second gear set can drive the first drive component 1 and the second drive component 13 to rotate well through the above structural design. Moreover, the structures of the first gear set and the second gear set are relatively simple and the layout is relatively compact, which is conducive to the miniaturization of the first gear set and the second gear set, and thus conducive to the miniaturization of the power drive system 100.

[0055] In some embodiments of this application, such as Figure 1 and Figure 2As shown, the power source includes a third electric motor 20 and / or an engine 29.

[0056] For example, the power source may consist only of the third motor 20, that is, the power drive system 100 is a pure electric drive system.

[0057] For example, the power source may consist only of engine 29, that is, the power drive system 100 is a hybrid power drive system 100.

[0058] For example, the power source may include a third motor 20 and an engine 29 at the same time. Thus, the engine 29 and the third motor 20 can provide kinetic energy to the first driven component 1 and the second driven component 13, respectively. The engine 29 can also drive the third motor 20, so that the third motor 20 becomes a generator to generate electricity and store energy.

[0059] In the above example, the power source can be equipped with a third motor 20 and an engine 29 according to actual needs, which is highly flexible and practical.

[0060] In some embodiments of this application, such as Figure 1 As shown, the power source includes a third motor 20, and the third drive assembly also includes a planetary assembly, which includes a third sun gear 21, a third planet gear 23, a third ring gear 24, and a third planet carrier 22. The third planet gear 23 and the output gear 26 are both mounted on the third planet carrier 22, and the third planet gear 23 meshes between the third sun gear 21 and the third ring gear 24. The third motor 20 is connected to the third ring gear 24 in a transmission connection.

[0061] In other words, when the third motor 20 starts, the third motor 20 drives the third gear ring 24 to rotate, which in turn causes the third gear ring 24 to rotate on its own axis and revolve around the sun, thereby driving the output gear 26 to rotate, and then transmitting power to the first drive assembly and the second drive assembly through the output gear 26.

[0062] In the above example, the planetary assembly has a simple structure and can better connect the power between the various components, making the power transmission between the third motor 20 and the output gear 26 more flexible. Therefore, the power drive system 100 of this application has good flexibility.

[0063] In some embodiments of this application, such as Figure 1 As shown, the power source includes a third motor 20 and an engine 29. The third drive assembly also includes a planetary assembly, which is connected between the engine 29 and the third motor 20. Power is transmitted between the third motor 20, the engine 29 and the output gear 26 through the planetary assembly.

[0064] In other words, the planetary assembly not only enables transmission between the engine 29 and the third motor 20, but also between the engine 29 and the output gear 26, and between the third motor 20 and the output gear 26. Thus, through this structure, for example, when the engine 29 is running and the third motor 20 is not running, the power of the engine 29 can be output to the first drive assembly and the second drive assembly via the planetary assembly and the output gear 26. The power of the engine 29 can also be output to the third motor 20 via the planetary assembly, thereby enabling the third motor 20 to generate electricity. For example, when the engine 29 is not running and the third motor 20 is running, the power of the third motor 20 can be output to the first drive assembly and the second drive assembly via the planetary assembly and the output gear 26. For example, when both the engine 29 and the third motor 20 are running, the power of both the engine 29 and the third motor 20 can be output to the first drive assembly and the second drive assembly via the planetary assembly and the output gear 26. Therefore, this multi-mode power transmission offers good flexibility, can better match actual needs, and is highly practical.

[0065] In the above example, the planetary assembly allows for flexible power transmission among the third motor 20, the engine 29, and the output gear 26. This enables the engine 29 to transmit power to the first drive assembly and the second drive assembly, or the third motor 20 to transmit power to the first drive assembly and the second drive assembly, or the engine 29 to transmit power to the third motor 20 to generate electricity, or both the engine 29 and the third motor 20 to transmit power to the first drive assembly and the second drive assembly. This provides good flexibility and strong practicality.

[0066] In some embodiments of this application, such as Figure 1 As shown, the engine 29 is connected to the third sun gear 21 via a transmission.

[0067] In other words, when the engine 29 is started and the third motor 20 is not started, the engine 29 can drive the third sun gear 21 to rotate, the third sun gear 21 can drive the third planet gear 23, the third planet gear 23 can rotate around the rotation axis of the third sun gear 21 while rotating on its own axis, the rotation of the third planet gear 23 can drive the third ring gear 24 to rotate, the third ring gear 24 can output power to the third motor 20, so that the third motor 20 generates electricity, the revolution of the third planet gear 23 can drive the third planet carrier 22 to rotate, the third planet carrier 22 can drive the output gear 26 to rotate, and then the power is transmitted to the first drive assembly and the second drive assembly through the output gear 26.

[0068] When the engine 29 is not started and the third motor 20 is started, it is equivalent to the third sun gear 21 not rotating. The third motor 20 drives the third ring gear 24 to rotate, so that the third ring gear 24 drives the third planet gear 23 to rotate on its own axis and revolve around the sun, thereby driving the output gear 26 to rotate, and then the power is transmitted to the first drive assembly and the second drive assembly through the output gear 26.

[0069] When both the engine 29 and the third motor 20 are started, the engine 29 outputs power through the third sun gear 21, and the third motor 20 outputs power through the third ring gear 24. The power of both can be concentrated and transmitted to the output gear 26 through the third planetary gear 23, thereby effectively delivering power to the first drive assembly and the second drive assembly.

[0070] In the above example, the planetary assembly has a simple structure and can better connect the power between the various components, making the power transmission between the third motor 20, the engine 29 and the output gear 26 more flexible. Therefore, the power drive system 100 of this application has good flexibility.

[0071] In addition, it should be noted that there are multiple first planetary gears, second planetary gears and third planetary gears 23 in this application, which will not be elaborated in the remaining examples section of this application.

[0072] In some embodiments of this application, such as Figure 1 As shown, the third drive assembly further includes: a first brake 27, which is connected between the housing and the third sun gear 21, for locking or unlocking the drive shaft between the engine 29 and the third sun gear 21; the third drive assembly further includes: a second brake 25, which is connected between the housing and the output gear 26, for locking or unlocking the output gear 26.

[0073] For example, the third drive assembly also includes a first brake 27, whereby when the engine 29 is not started, the first brake 27 can lock the third sun gear 21, which can reduce the interference of the third planet gear 23 with the engine 29 through the third sun gear 21 when it rotates. Furthermore, the first brake 27 can lock the third sun gear 21, which can better fix the third sun gear 21. When the third sun gear 21 does not rotate, the power output by the third motor 20 can be output to the first drive assembly and the second drive assembly in sequence through the third ring gear 24, the third planet gear 23 and the output gear 26.

[0074] For example, the third drive assembly also includes a second brake 25, whereby when the engine 29 starts, the output gear 26 is locked by the second brake 25, and the power output by the engine 29 can be transmitted to the third motor 20 in sequence through the third sun gear 21, the third planet gear 23, and the third ring gear 24, so that the third motor 20 can generate electricity and store energy.

[0075] In the above example, by setting the first brake 27 and the second brake 25, the power drive system 100 can lock or unlock the third sun gear 21 and the output gear 26 when performing different driving modes, which is simple and convenient.

[0076] In some embodiments of this application, such as Figure 1 As shown, the third drive assembly also includes a first clutch 28, which is connected between the engine 29 and the third sun gear 21, and is used to control the power supply between the engine 29 and the third sun gear 21.

[0077] In other words, when the engine 29 starts, power can be transmitted to the third sun gear 21 via the first clutch 28. When the engine 29 is not running, the connection with the third sun gear 21 can be disconnected via the first clutch 28, thereby reducing the impact of external power on the engine 29. Furthermore, when the first clutch 28 disconnects the connection between the engine 29 and the third sun gear 21, the third sun gear 21 can be locked via the first brake 27, allowing the power output from the third motor 20 to be sequentially transmitted through the third ring gear 24, the third planetary gear 23, and the output gear 26 towards the first drive assembly and the second drive assembly.

[0078] In the above example, the first clutch 28 can effectively realize the power output of the engine 29 and effectively protect the engine 29 when it is not running.

[0079] In some embodiments of this application, such as Figure 2 As shown, the power source includes a third motor 20, and the third drive assembly also includes a second-stage drive gear 32, which is connected between the third motor 20 and the output gear 26.

[0080] For example, the secondary drive gear 32 can be coaxial with the output shaft of the third motor 20, and the secondary drive gear 32 can mesh with the output gear 26.

[0081] In the example above, the third motor 20 can transmit power to the output gear 26 relatively directly, and the structure is simple.

[0082] In some embodiments of this application, such as Figure 2 As shown, the power source includes a third motor 20 and an engine 29, which are connected in a transmission manner, and the third motor 20 and / or engine 29 are connected in a transmission manner to the output gear 26.

[0083] For example, the third motor 20 and the engine 29 can be connected to the output gear 26 respectively, so that the third motor 20 and the engine 29 can respectively transmit power to the output gear 26.

[0084] For example, the engine 29 is connected to the third motor 20 in a transmission connection. The engine 29 can output power to the third motor 20, so that the third motor 20 generates electricity. In addition, the third motor 20 can also be connected to the output gear 26 in a transmission connection, so as to drive the output gear 26 to rotate when the third motor 20 is started.

[0085] In the above example, the third motor 20, engine 29, and output gear 26 can be configured according to actual needs to achieve different functions.

[0086] In some embodiments of this application, such as Figure 2 As shown, the third drive assembly also includes: a first-stage drive gear 30 and a first-stage driven gear 31, which mesh with each other. The first-stage drive gear 30 is connected to the output shaft of the engine 29, and the first-stage driven gear 31 and the output gear 26 are both connected to the output shaft of the third motor 20.

[0087] In other words, when the engine 29 is started and the third motor 20 is not started, the kinetic energy output by the engine 29 can be transmitted to the first-stage driven gear 31 through the first-stage driving gear 30. One axial end of the first-stage driven gear 31 is connected to the third motor 20, so that the power carried by the first-stage driven gear 31 can be transmitted to the third motor 20, so that the third motor 20 generates and stores energy. The other axial end of the first-stage driven gear 31 can be connected to the output gear 26, so as to drive the output gear 26 to rotate, and then transmit the power to the first drive assembly and the second drive assembly through the output gear 26.

[0088] When the engine 29 is not started and the third motor 20 is started, the power output by the third motor 20 can be transmitted to the output gear 26 through the first-stage driven gear 31, and then the power is transmitted to the first drive assembly and the second drive assembly through the output gear 26.

[0089] In the above example, the power output of the engine 29 and the third motor 20 can be well realized through the first-stage driving gear 30 and the first-stage driven gear 31, and the structure is simple.

[0090] In some embodiments of this application, such as Figure 2As shown, the third drive assembly further includes: a second clutch 33, which is connected between the engine 29 and the first-stage drive gear 30, for controlling the power supply between the engine 29 and the first-stage drive gear 30, and / or, the third drive assembly further includes: a second-stage drive gear 32 and a third clutch 34, which are drively connected between the first-stage driven gear 31 and the output gear 26, and the third clutch 34 are connected between the first-stage driven gear 31 and the second-stage drive gear 32, for controlling the power supply between the first-stage driven gear 31 and the second-stage drive gear 32.

[0091] For example, the third drive component further includes a second clutch 33. When the engine 29 is not started and the third motor 20 is started, the second clutch 33 can effectively disconnect the connection between the first-stage drive gear 30 and the engine 29, so that the third motor 20 is less likely to damage the engine 29 when it outputs power, or in other words, the engine 29 is less likely to interfere with the power output of the third motor 20. When the engine 29 is started, the second clutch 33 can effectively connect the first-stage drive gear 30 and the engine 29 to realize the transmission of power from the engine 29.

[0092] For example, the third drive assembly also includes a secondary drive gear 32 and a third clutch 34, whereby when the engine 29 supplies power to the third motor 20, causing the third motor 20 to generate and store energy, the third clutch 34 can disconnect the connection between the secondary drive gear 32 and the primary driven gear 31.

[0093] In the above example, by setting the second clutch 33 and the third clutch 34, the power transmission of the engine 29 can be realized better, and the engine 29 can drive the third motor 20 better, so as to realize the power generation and energy storage of the third motor 20.

[0094] In some embodiments of this application, such as Figure 2 As shown, the power drive system 100 also includes a third brake 35, which is connected between the housing and the secondary drive gear 32 and is used to lock or unlock the secondary drive gear 32.

[0095] In the above example, when neither the engine 29 nor the third motor 20 is started, the second-stage drive gear 32 can be locked by the third brake 35. After the second-stage drive gear 32 is locked, the output gear 26 can also be locked and will not rotate, so that the first drive assembly and the second drive assembly can transmit power independently.

[0096] The following is combined Figure 1 The structure of the power drive system 100 of the first specific embodiment of this application and various drive modes are described.

[0097] The power drive system 100 includes a first drive assembly, a second drive assembly, and a third drive assembly. The first drive assembly includes a first motor 3, a first gear set, and a first drive shaft 2. The first gear set is driven between the first motor 3 and the first drive shaft 2. The second drive assembly includes a second motor 15, a second gear set, and a second drive shaft 14. The second gear set is driven between the second motor 15 and the second drive shaft 14. The third drive assembly includes a power source and an output gear 26. The power source and the output gear 26 are driven together. The output gear 26 includes a first part and a second part along the axial direction. The first part is driven together with the first gear set, and the second part is driven together with the second gear set.

[0098] The power drive system 100 also includes a transmission assembly, which is driven between the first gear set, the second gear set, and the output gear 26. The first gear set includes a first planetary gear 5, the second gear set includes a second planetary gear 17, and the transmission assembly includes a first ring gear 6, a first intermediate shaft gear 7, a second ring gear 18, and a second intermediate shaft gear 19. The first ring gear 6 meshes with the outer side of the first planetary gear 5, and the first intermediate shaft gear 7 is driven between the first ring gear 6 and the first part. The second ring gear 18 meshes with the outer side of the second planetary gear 17, and the second intermediate shaft gear 19 is driven between the second ring gear 18 and the second part.

[0099] The first gear set includes: a first sun gear 9, a first planet gear, and a first planet carrier 10. A first motor 3 is connected to the first sun gear 9. The first planet gear is rotatably mounted on the first planet carrier 10. The first planet gear includes a first large planet gear 4 and a first small planet gear 5 coaxially connected. The first large planet gear 4 meshes with the first sun gear 9. The first planet carrier 10 is connected to the first drive shaft 2. The second gear set includes: a second sun gear 12, a second planet gear, and a second planet carrier 11. A second motor 15 is connected to the second sun gear 12. The second planet gear is rotatably mounted on the second planet carrier 11. The second planet gear includes a second large planet gear 16 and a second small planet gear 17 coaxially connected. The second large planet gear 16 meshes with the second sun gear 12. The second planet carrier 11 is connected to the second drive shaft 14.

[0100] The power source includes a third motor 20 and an engine 29. The third drive assembly also includes a planetary assembly, which is connected between the engine 29 and the third motor 20. Power is transmitted between the third motor 20, the engine 29 and the output gear 26 through the planetary assembly.

[0101] The planetary assembly includes a third sun gear 21, a third planet gear 23, a third ring gear 24, and a third planet carrier 22. The third planet gear 23 and the output gear 26 are both mounted on the third planet carrier 22, and the third planet gear 23 is driven between the third sun gear 21 and the third ring gear 24. The third motor 20 is driven to the third ring gear 24, and the engine 29 is driven to the third sun gear 21.

[0102] The third drive assembly also includes: a first brake 27 and a second brake 25. The first brake 27 is connected between the housing and the third sun gear 21 and is used to lock or unlock the third sun gear 21. The second brake 25 is connected between the housing and the output gear 26 and is used to lock or unlock the output gear 26.

[0103] The third drive assembly also includes a first clutch 28, which is connected between the engine 29 and the third sun gear 21 and is used to control the power supply between the engine 29 and the third sun gear 21.

[0104] Combination Figure 3 The power drive system 100 in this embodiment can have the following operating modes: Dual-motor distributed drive mode: The second brake 25 is engaged, the first brake 27 is disengaged, the first clutch 28 is disengaged, and the first motor 3 and the second motor 15 are driven. The first motor 3 and the second motor 15 drive the two driven components on both sides respectively, realizing vector control of the two driven components on both sides; the power flow is as follows: left side: first motor 3 → first sun gear 9 → first large planetary gear 4 → first small planetary gear 5 → first planetary carrier 10 → first drive shaft 2 → first driven component 1; right side: second motor 15 → second sun gear 12 → second large planetary gear 16 → second small planetary gear 17 → second planetary carrier 11 → second drive shaft 14 → second driven component 13.

[0105] Range extender + dual-motor drive mode: First clutch 28 engages, second brake 25 engages, first brake 27 disengages, first motor 3 and second motor 15 drive, third motor 20 generates electricity, engine 29 starts, first motor 3 and second motor 15 drive the two driven components on both sides respectively, used for range extender drive when power is depleted; power flow is as follows: Range extender: engine 29 → first clutch 28 → third sun gear 21 → third planetary gear 23 → third ring gear 24 → third motor 20; Drive: Left side: first motor 3 → first sun gear 9 → first large planetary gear 4 → first small planetary gear 5 → first planetary carrier 10 → first drive shaft 2 → first driven component 1; Right side: second motor 15 → second sun gear 12 → second large planetary gear 16 → second small planetary gear 17 → second planetary carrier 11 → second drive shaft 14 → second driven component 13.

[0106] Three-motor drive mode: First brake 27 is engaged, second brake 25 is disengaged, first clutch 28 is disengaged, first motor 3, second motor 15, and third motor 20 jointly drive the two driven components on both sides. This is useful when one driven component slips or encounters a crater, etc. The torque of the three motors can be concentrated on one driven component, improving the wheel's ability to get out of trouble. The power flow is as follows: First motor 3: First motor 3 → First sun gear 9 → First large planetary gear 4 → First small planetary gear 5 → First planetary carrier 10 → First drive shaft 2 → First driven component 1; Second motor 15: Second motor 15 → Second sun gear 12 → Second large planetary gear 16 → Second small planetary gear 1 7 → Second planetary carrier 11 → Second drive shaft 14 → Second driven component 13; The third motor 20 has two power paths: One path: Third motor 20 → Third gear ring 24 → Third planetary gear 23 → Third planetary carrier 22 → Output gear 26 → First intermediate shaft gear 7 → First gear ring 6 → First small planetary gear 5 → First planetary carrier 10 → First drive shaft 2 → First driven component 1; The other path: Third motor 20 → Third gear ring 24 → Third planetary gear 23 → Third planetary carrier 22 → Output gear 26 → Second intermediate shaft gear 19 → Second gear ring 18 → Second small planetary gear 17 → Second planetary carrier 11 → Second drive shaft 14 → Second driven component 13.

[0107] Engine 29 + Three-Motor Drive Mode: First clutch 28 engages, first brake 27 disengages, second brake 25 disengages, first motor 3, second motor 15, third motor 20, and engine 29 start, jointly driving the two driven components on both sides. This is useful when one driven component slips or encounters craters, concentrating the torque of the three motors and engine 29 on one wheel to improve the driving component's ability to get out of trouble; the power flow is as follows: First motor 3: First motor 3 → First sun gear 9 → First large planetary gear 4 → First small planetary gear 5 → First planetary carrier 10 → First drive shaft 2 → First driven component 1; Second... One path for motor 15: Second motor 15 → Second sun gear 12 → Second large planetary gear 16 → Second small planetary gear 17 → Second planetary carrier 11 → Second drive shaft 14 → Second driven component 13; The power of engine 29 and third motor 20 is combined through the planetary gear set power of the range extender module and then split into two paths: one path is through the first intermediate shaft gear 7 → First gear ring 6 → First small planetary gear 5 → First planetary carrier 10 → First drive shaft 2 → First driven component 1; the other path is through the second intermediate shaft gear 19 → Second gear ring 18 → Second small planetary gear 17 → Second planetary carrier 11 → Second drive shaft 14 → Second driven component 13.

[0108] Range-extending mode: First clutch 28 engages, second brake 25 engages, first brake 27 disengages, third motor 20 generates electricity, and engine 29 starts; power flow is: engine 29 → first clutch 28 → third planetary carrier 22 → third planetary gear 23 → third sun gear 21 → third motor 20.

[0109] Braking energy recovery mode 1: The second brake 25 is engaged, the first brake 27 is disengaged, the first clutch 28 is disengaged, the first motor 3 and the second motor 15 participate in braking energy recovery, and the power flow is as follows: Left side: First driveable component 1 → First drive shaft 2 → First planetary carrier 10 → First small planetary gear 5 → First large planetary gear 4 → First sun gear 9 → First motor 3; Right side: Second driveable component 13 → Second drive shaft 14 → Second planetary carrier 11 → Second small planetary gear 17 → Second large planetary gear 16 → Second sun gear 12 → Second motor 15.

[0110] Braking energy recovery mode 2: At this time, the recovered energy is relatively large. The first brake 27 is engaged, the second brake 25 is disengaged, and the first clutch 28 is disengaged. At this time, the first motor 3, the second motor 15, and the third motor 20 participate in braking energy recovery. The power of the first drive assembly and the second drive assembly is transmitted to the output gear 26 → the third planetary carrier 22 → the third planetary gear 23 → the third ring gear 24 → the third motor 20.

[0111] Differential lock mode: The second brake 25 is engaged, the first brake 27 is disengaged, the first clutch 28 is disengaged, and the first motor 3 and the second motor 15 drive the driven component. If the driven component on one side slips or encounters a crater, the torque of the two motors can be concentrated on one side of the driven component, improving the driven component's ability to get out of trouble.

[0112] As can be seen from the above, this application can effectively achieve the switching of the above-mentioned multiple modes through the first clutch 28, the first brake 27 and the second brake 25, with fewer control structures, which can effectively reduce the control difficulty of the power drive system 100.

[0113] The following is combined with Figure 2 The structure of the power drive system 100 of the first specific embodiment of this application and various drive modes are described.

[0114] The power drive system 100 includes a first drive assembly, a second drive assembly, and a third drive assembly. The first drive assembly includes a first motor 3, a first gear set, and a first drive shaft 2. The first gear set is driven between the first motor 3 and the first drive shaft 2. The second drive assembly includes a second motor 15, a second gear set, and a second drive shaft 14. The second gear set is driven between the second motor 15 and the second drive shaft 14. The third drive assembly includes a power source and an output gear 26. The power source and the output gear 26 are driven together. The output gear 26 includes a first part and a second part along the axial direction. The first part is driven together with the first gear set, and the second part is driven together with the second gear set.

[0115] The power drive system 100 also includes a transmission assembly, which is driven between the first gear set, the second gear set, and the output gear 26. The first gear set includes a first planetary gear 5, the second gear set includes a second planetary gear 17, and the transmission assembly includes a first ring gear 6, a first intermediate shaft gear 7, a second ring gear 18, and a second intermediate shaft gear 19. The first ring gear 6 meshes with the outer side of the first planetary gear 5, and the first intermediate shaft gear 7 is driven between the first ring gear 6 and the first part. The second ring gear 18 meshes with the outer side of the second planetary gear 17, and the second intermediate shaft gear 19 is driven between the second ring gear 18 and the second part.

[0116] The first gear set includes: a first sun gear 9, a first planet gear, and a first planet carrier 10. A first motor 3 is connected to the first sun gear 9. The first planet gear is rotatably mounted on the first planet carrier 10. The first planet gear includes a first large planet gear 4 and a first small planet gear 5 coaxially connected. The first large planet gear 4 is driven by the first sun gear 9. The first planet carrier 10 is connected to the first drive shaft 2. The second gear set includes: a second sun gear 12, a second planet gear, and a second planet carrier 11. A second motor 15 is connected to the second sun gear 12. The second planet gear is rotatably mounted on the second planet carrier 11. The second planet gear includes a second large planet gear 16 and a second small planet gear 17 coaxially connected. The second large planet gear 16 is driven by the second sun gear 12. The second planet carrier 11 is connected to the second drive shaft 14.

[0117] The power source includes a third motor 20 and an engine 29. The third drive assembly also includes a first-stage drive gear 30 and a first-stage driven gear 31. The first-stage drive gear 30 and the first-stage driven gear 31 mesh with each other and are connected in a transmission manner between the engine 29, the third motor 20 and the output gear 26.

[0118] The third drive assembly also includes a second clutch 33, a second-stage drive gear 32, and a third clutch 34. The second clutch 33 is connected between the engine 29 and the first-stage drive gear 30 and is used to control the power supply between the engine 29 and the first-stage drive gear 30. The second-stage drive gear 32 is connected between the first-stage driven gear 31 and the output gear 26. The third clutch 34 is connected between the first-stage driven gear 31 and the second-stage drive gear 32 and is used to control the power supply between the first-stage driven gear 31 and the second-stage drive gear 32.

[0119] The power drive system 100 also includes a third brake 35, which is connected between the housing and the secondary drive gear 32 and is used to lock or unlock the secondary drive gear 32.

[0120] This embodiment can also have dual-motor distributed drive mode, range extender + dual-motor drive mode, three-motor drive mode, engine 29 + three-motor drive mode, range extender mode, brake energy recovery mode 1, brake energy recovery mode 2, and differential lock mode. For details, please refer to [link / reference]. Figure 4 This will not be elaborated upon in this example.

[0121] As can be seen from the above, this application can effectively achieve the switching of multiple modes through the second clutch 33, the third clutch 34 and the third brake 35, with fewer control structures, which can effectively reduce the control difficulty of the power drive system 100.

[0122] This application also proposes a vehicle having the power drive system 100 of the above embodiments.

[0123] The vehicle according to the embodiments of this application, by providing the power drive system 100 of the above embodiments, and by providing a third drive component, and making the output gear 26 of the third drive component simultaneously connected to the first drive component and the second drive component, has a simple structure, which can help simplify the power drive system 100. In addition, the output gear 26 is relatively small, which helps to reduce the volume of the power drive system 100, thereby helping to optimize the spatial layout of the power drive system 100. Furthermore, the third drive component can not only transmit power to the first drive member 1 and the second drive member 13 respectively, but the output gear 26 can also be connected to the first drive component and the second drive component simultaneously, so that the first drive component, the second drive component and the third drive component can form a whole for mutual power transmission. This can help to increase the energy for driving the first drive member 1 and the second drive member 13 to rotate, and at the same time help the first drive member 1 and the second drive member 13 to get out of trouble, which is highly practical.

[0124] For example, the power drive system 100 of this application can be applied to a vehicle. Thus, the first drive shaft 2 and the second drive shaft 14 can be connected to the two wheels on the left and right sides of the vehicle respectively. These two wheels can be the two front wheels or the two rear wheels of the vehicle. This application does not limit this. In addition, for ease of description, the two wheels on the left and right sides of the vehicle are referred to as the first wheel and the second wheel respectively. Thus, the first drive assembly can drive the first wheel to rotate through the first drive shaft 2, and the second drive assembly can drive the second wheel to rotate through the second drive shaft 14.

[0125] Regarding the above examples, it is understood that the power drive system 100 of this application can also be applied to other equipment, such as ships, robots, etc., and this application does not impose any restrictions. In addition, for vehicles, it can be a passenger car, an excavator, a road roller, etc., and this application does not impose any restrictions. For the sake of convenience in describing the solution, the following examples all use the example that the power drive system 100 can be applied to a vehicle, but this should not be regarded as a limitation of this application, and will not be elaborated in the following description of the solution.

[0126] The power drive system 100 and other components and operations of the vehicle according to the embodiments of this application are known to those skilled in the art and will not be described in detail here.

[0127] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," 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 this application. 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.

[0128] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A power drive system, characterized in that, include: The first drive assembly includes a first motor (3), a first gear set and a first drive shaft (2), the first gear set being connected between the first motor (3) and the first drive shaft (2), and the first drive shaft (2) being used to output power to the first drive component; The second drive assembly includes a second motor (15), a second gear set, and a second drive shaft (14). The second gear set is connected between the second motor (15) and the second drive shaft (14). The second drive shaft (14) is used to output power to the second drive component. The third drive assembly includes a power source, an output gear (26), and a second brake (25). The power source is connected to the output gear (26) in a transmission connection. The output gear (26) has a first part and a second part along the axial direction. The first part is connected to the first gear set in a transmission connection, and the second part is connected to the second gear set in a transmission connection. The second brake (25) is connected between the housing and the output gear (26) for locking or unlocking the output gear (26). A transmission assembly is connected between the first gear set, the second gear set and the output gear (26) to enable the first drive assembly and the second drive assembly to operate independently when the output gear (26) is locked.

2. The power drive system according to claim 1, characterized in that, The first gear set includes a first planetary gear (5), the second gear set includes a second planetary gear (17), and the transmission assembly includes: A first gear ring (6) and a first intermediate shaft gear (7), wherein the first gear ring (6) meshes on the outside of the first planetary gear (5), and the first intermediate shaft gear (7) meshes between the first gear ring (6) and the first part; The second gear ring (18) and the second intermediate shaft gear (19) are connected. The second gear ring (18) meshes on the outside of the second planetary gear (17), and the second intermediate shaft gear (19) meshes between the second gear ring (18) and the second part.

3. The power drive system according to claim 2, characterized in that, The first gear set includes: a first sun gear (9), a first planet gear and a first planet carrier (10). The first motor (3) is driven to the first sun gear (9). The first planet gear is rotatably mounted on the first planet carrier (10). The first planet gear includes a first large planet gear (4) and a first small planet gear (5) coaxially connected. The first large planet gear (4) meshes with the first sun gear (9). The first planet carrier (10) is driven to the first drive shaft (2). The second gear set includes: a second sun gear (12), a second planet gear, and a second planet carrier (11). The second motor (15) is driven by the second sun gear (12). The second planet gear is rotatably mounted on the second planet carrier (11). The second planet gear includes a second large planet gear (16) and a second small planet gear (17) coaxially connected. The second large planet gear (16) meshes with the second sun gear (12). The second planet carrier (11) is driven by the second drive shaft (14).

4. The power drive system according to claim 1, characterized in that, The power source includes a third motor (20), and the third drive assembly further includes a planetary assembly, which includes: The third sun gear (21), the third planet gear (23), the third ring gear (24) and the third planet carrier (22) are mounted on the third planet carrier (22), and the third planet gear (23) meshes between the third sun gear (21) and the third ring gear (24). The third motor (20) is connected to the third ring gear (24) in a transmission.

5. The power drive system according to claim 4, characterized in that, The power source also includes an engine (29), which is connected to the third sun gear (21) via a transmission.

6. The power drive system according to claim 5, characterized in that, The third driving component also includes: A first brake (27) is connected between the housing and the third sun gear (21) for locking or unlocking the drive shaft between the engine (29) and the third sun gear (21).

7. The power drive system according to claim 5, characterized in that, The third drive assembly further includes a first clutch (28), which is connected between the engine (29) and the third sun gear (21) for controlling the power supply between the engine (29) and the third sun gear (21).

8. The power drive system according to claim 1, characterized in that, The power source includes a third motor (20), and the third drive assembly further includes a secondary drive gear (32), which is connected between the third motor (20) and the output gear (26).

9. The power drive system according to claim 8, characterized in that, The power source also includes an engine (29), and the third drive assembly also includes a first-stage drive gear (30) and a first-stage driven gear (31). The first-stage drive gear (30) and the first-stage driven gear (31) mesh with each other. The first-stage drive gear (30) is connected to the output shaft of the engine (29) for transmission. The first-stage driven gear (31) and the output gear (26) are both connected to the output shaft of the third motor (20) for transmission.

10. The power drive system according to claim 9, characterized in that, The third driving component also includes: A second clutch (33) is connected between the engine (29) and the first-stage drive gear (30) for controlling the power supply between the engine (29) and the first-stage drive gear (30), and / or, The third clutch (34) is connected between the first-stage driven gear (31) and the output gear (26) and the second-stage driving gear (32), and is used to control the power supply between the first-stage driven gear (31) and the second-stage driving gear (32).

11. The power drive system according to claim 10, characterized in that, It also includes a third brake (35), which is connected between the housing and the secondary drive gear (32) for locking or unlocking the secondary drive gear (32).

12. A vehicle, characterized in that, The system includes a first wheel, a second wheel, and a power drive system according to any one of claims 1-11, wherein the first wheel and the first drive shaft (2) are connected in a transmission manner, and the second wheel and the second drive shaft (14) are connected in a transmission manner.

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