Powertrain for a vehicle and vehicle

Abstract

The utility model discloses a kind of power assembly and vehicle for vehicle, it is related to vehicle power system field.Power assembly includes input shaft, planetary gear assembly, motor, engine and first clutch, planetary gear assembly includes mutually matched sun gear, carrier and ring gear, one in sun gear, carrier and ring gear is connected to input shaft;The output end of motor is connected to another in sun gear, carrier and ring gear;The output end of engine is selectively connected to remaining one in sun gear, carrier and ring gear;First clutch is connected to at least two in sun gear, carrier and ring gear, and first clutch is suitable for selectively at least two in sun gear, carrier and ring gear are engaged or disconnected to switch in engagement state and disconnected state.According to the power assembly of the utility model, a variety of different working modes are realized, both enhance the power output when feeding, and ensure the smoothness of mode switching.

Description

Technical Field

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

[0002] In a parallel hybrid system, the coupling method between the engine and the electric motor determines the system's driving characteristics.

[0003] In related technologies, when the battery is depleted, the motor's output power is limited, resulting in sluggish power response and reduced acceleration performance during vehicle start-up, getting out of trouble, or low-speed operation, thus affecting the driving experience. Additionally, power interruptions can easily occur during gear shifts or power source switching, impacting driving smoothness. 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 vehicles. According to the powertrain of this invention, multiple different operating modes are achieved, enhancing power output during power depletion while ensuring smooth mode switching.

[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: an input shaft; a planetary gear assembly, the planetary gear assembly including a sun gear, a planet carrier, and a ring gear that cooperate with each other, one of the sun gear, the planet carrier, and the ring gear being connected to the input shaft; a motor, the output end of which is connected to another of the sun gear, the planet carrier, and the ring gear; an engine, the output end of which is selectively connected to the remaining one of the sun gear, the planet carrier, and the ring gear; a first clutch, the first clutch being connected to at least two of the sun gear, the planet carrier, and the ring gear, the first clutch being adapted to selectively engage or disengage at least two of the sun gear, the planet carrier, and the ring gear to switch between an engaged state and a disengaged state; in the engaged state, the sun gear, the planet carrier, and the ring gear rotate synchronously as a whole; in the disengaged state, the sun gear, the planet carrier, and the ring gear rotate relatively independently.

[0007] According to the powertrain of this utility model, by controlling the engagement and disengagement of the first clutch and the working state of the engine and motor, the switching of different working modes can be realized, and the problems of weak power supply and smooth mode switching in the prior art can be alleviated.

[0008] When the vehicle's battery is depleted, the engine can be used to drive the vehicle, or the power input from the engine and motor can be combined through the planetary gear set to drive the vehicle, reducing dependence on battery power and ensuring the vehicle's power performance.

[0009] By converging the power inputs from the engine and motor into the planetary gear set and driving the vehicle, the powertrain can achieve uninterrupted power output during gear shifts, even if the output state of one power source changes during gear shifting.

[0010] According to some embodiments of the present invention, the input shaft is connected to the gear ring, the motor is connected to the sun gear, and the output end of the engine is optionally connected to the planetary carrier.

[0011] According to some embodiments of the present invention, the powertrain has a pure electric mode, in which the output end of the engine is disconnected from the planetary carrier, and the pure electric mode has a first gear and a second gear; in the first gear, the first clutch is in a disengaged state; in the second gear, the first clutch is in a engaged state.

[0012] According to some embodiments of the present invention, the powertrain further includes: a housing; a second clutch, the second clutch having a first engagement portion and a second engagement portion that can be selectively engaged or disengaged, the first engagement portion being connected to the housing, and the second engagement portion being connected to the planetary carrier; wherein in the first gear of the pure electric mode, the first engagement portion engages with the second engagement portion.

[0013] According to some embodiments of the present invention, the powertrain further has a first hybrid mode and a second hybrid mode; in the first hybrid mode, the output end of the engine is connected to the planetary carrier, and the first clutch is engaged; in the second hybrid mode, the output end of the engine is connected to the planetary carrier, and the first clutch is disengaged.

[0014] According to some embodiments of the present invention, the powertrain also has a parking power generation mode, in which the output end of the engine is connected to the planetary carrier and the first clutch is in an open state.

[0015] According to some embodiments of the present invention, the powertrain also has a pure engine mode, in which the output end of the engine is connected to the planetary carrier and the first clutch is in an engaged state.

[0016] According to some embodiments of the present invention, the powertrain further includes: a multi-speed transmission device, the input end of which is selectively connected to the output end of the engine, the output end of which is connected to the input shaft, and the multi-speed transmission device is adapted to adjust the transmission ratio.

[0017] According to some embodiments of the present invention, the powertrain further includes: a transfer case, the input end of which is connected to the input shaft, the transfer case having a first output end and a second output end; a front axle output shaft, which is drivenly connected to the first output end; and a rear axle output shaft, which is drivenly connected to the second output end.

[0018] In summary, the powertrain according to this utility model embodiment, by controlling the engagement and disengagement of the first clutch and the output states of the engine and motor, can achieve switching between different operating modes and alleviate the problems of weak power output and smooth mode switching in the prior art. When the vehicle is out of power, the engine's power can be used to drive the vehicle, or the power input from the engine and motor can be combined through the planetary gear set to drive the vehicle, reducing dependence on battery power and ensuring the vehicle's power performance. By combining the power input from the engine and motor through the planetary gear set to drive the vehicle, even if the output state of one power source changes during gear shifting, the other power source can still continuously output power through the planetary gear set, providing a basis for uninterrupted power shifting. By controlling the state of the first clutch to achieve switching between different transmission ratios, both the power performance in pure electric mode and the energy utilization efficiency in different speed ranges are optimized. In the first gear of pure electric mode, the first engagement part and the second engagement part engage, thereby effectively increasing the motor output torque and meeting the power demand of the vehicle in the first gear of pure electric mode. By controlling the engagement and disengagement of the first and second joints, the powertrain can smoothly switch between different gears, ensuring both power performance in pure electric drive and improving energy efficiency. Switching between the first and second hybrid modes allows the powertrain to select the optimal operating state based on conditions, improving fuel economy and driving smoothness while maintaining power performance. In the parking generator mode, the engine's power is converted into electrical energy to charge the vehicle's battery, making fuller use of the engine's power and continuing to charge the battery even when the vehicle is parked, thus improving energy efficiency. In pure engine mode, the electric motor does not participate in power output, and the vehicle is driven entirely by the engine.

[0019] The vehicle according to this utility model is briefly described below.

[0020] The vehicle according to this utility model includes the powertrain described in any of the above embodiments. Since the vehicle according to this utility model includes the powertrain described in any of the above embodiments, it can achieve multiple operating modes, effectively enhancing power output when the battery is depleted and ensuring smooth mode switching, thereby improving vehicle performance and driving experience.

[0021] 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

[0022] 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: Figure 1 This is a structural diagram of a powertrain according to an embodiment of the present invention; Figure 2 This is a structural diagram of a powertrain according to another embodiment of the present invention; Figure 3 This is a structural diagram of a powertrain according to another embodiment of the present utility model; Figure 4 This is a structural diagram of a powertrain according to another embodiment of the present invention; Figure 5 This is a structural diagram of a powertrain according to an embodiment of the present invention, comprising a transfer case, a first input shaft, a front axle output shaft, and a rear axle output shaft.

[0023] Figure label: 1. Powertrain; 11. Input axis; 12. Planetary gear assembly; 121. Sun gear; 122. Planet carrier; 123. Gear ring; 13. Electric motor; 14. Engine; 15. First clutch; 16. Housing; 17. Second clutch; 18. Multi-speed transmission; 19. Third clutch. 20. Transfer case; 201. Second planetary gear set assembly; 2011. Second sun gear; 2012. Second planetary carrier; 2013. Second ring gear. 21. Front axle output shaft; 22. Rear axle output shaft. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] In related technologies, when the battery is depleted, the motor's output power is limited, resulting in sluggish power response and reduced acceleration performance during vehicle start-up, getting out of trouble, or low-speed operation, thus affecting the driving experience. Additionally, power interruptions can easily occur during gear shifts or power source switching, impacting driving smoothness.

[0028] The following is for reference. Figures 1-5 The powertrain 1 according to an embodiment of the present utility model is described.

[0029] like Figures 1-4 As shown, the powertrain 1 according to this utility model is used in a vehicle. The powertrain 1 includes an input shaft 11, a planetary gear assembly 12, a motor 13, an engine 14, and a first clutch 15. The components work together through a specific connection method to realize the power transmission and drive of the vehicle.

[0030] The planetary gear set 12 includes a sun gear 121, a planet carrier 122, and a ring gear 123 that mesh with each other, transmitting and distributing power through the meshing relationship of the planetary gears. One of the sun gear 121, the planet carrier 122, and the ring gear 123 is connected to the input shaft 11, so that power can be transmitted from the planetary gear set 12 to the input shaft 11, and then further transmitted from the input shaft 11 to drive the vehicle.

[0031] The output end of the motor 13 is connected to another of the sun gear 121, planet carrier 122 and ring gear 123, so that the motor 13 can provide power to the planetary gear assembly 12 as a power source, and the planetary gear assembly 12 can further transmit the power to the input shaft 11.

[0032] The output of engine 14 can be selectively connected to one of the remaining components of sun gear 121, planet carrier 122, and ring gear 123 to enable or disable power input to engine 14. Engine 14 can transmit power to input shaft 11 via planetary gear assembly 12 to provide driving force for the vehicle.

[0033] A first clutch 15 is connected to at least two of the sun gear 121, planet carrier 122, and ring gear 123. The first clutch 15 is adapted to selectively engage or disengage at least two of the sun gear 121, planet carrier 122, and ring gear 123 to switch between an engaged state and an disengaged state. By changing the engagement or disengagement state of the first clutch 15, the power transmission relationship between the sun gear 121, planet carrier 122, and ring gear 123 is controlled.

[0034] When the first clutch 15 is engaged, the sun gear 121, planet carrier 122, and ring gear 123 rotate synchronously as a whole. At this time, the planetary gear set 12 rotates as a whole, and power is directly transmitted. When the first clutch 15 is disengaged, the sun gear 121, planet carrier 122, and ring gear 123 rotate relatively independently. At this time, the planetary gear set 12 can reduce the input speed while increasing the output torque, and can also combine the power input from the engine 14 and the motor 13 respectively.

[0035] By controlling the engagement and disengagement of the first clutch 15 and the output states of the engine 14 and the motor 13, different operating modes can be switched, and the problems of weak power supply and smooth mode switching in the prior art can be alleviated.

[0036] When the vehicle's battery is depleted, the vehicle can be driven by the power of the engine 14, or the power input from the engine 14 and the motor 13 can be combined through the planetary gear assembly 12 to drive the vehicle, reducing dependence on battery power and ensuring the vehicle's power performance.

[0037] By converging the power input from the engine 14 and the motor 13 into the planetary gear set 12 and driving the vehicle, the powertrain 1 can achieve uninterrupted power output during gear shifting even if the output state of one power source changes.

[0038] Therefore, the powertrain 1 of this utility model realizes a variety of different working modes, which not only enhances the power output when the power is supplied, but also ensures the smoothness of mode switching.

[0039] It should be noted that this application does not limit the specific connection relationship between the input shaft 11, the motor 13 and the engine 14 and the planetary gear assembly 12, as long as power transmission can be achieved through the planetary gear assembly 12 and the power requirements under different working conditions can be met.

[0040] According to some embodiments of this utility model, such as Figures 1-3 As shown, the input shaft 11 of the powertrain 1 is connected to the ring gear 123 of the planetary gear set 12, allowing power to be transmitted to the input shaft 11 via the ring gear 123, thereby driving the vehicle. The output end of the motor 13 is connected to the sun gear 121, enabling the motor 13 to act as a power source to input power to the planetary gear set 12, and to distribute and transmit power through the meshing relationship of the planetary gears. The output end of the engine 14 can be selectively connected to the planetary carrier 122, thereby enabling the input or disconnection of power from the engine 14. When the engine 14 is connected to the planetary carrier 122, the power of the engine 14 can be transmitted to the planetary gear set 12 via the planetary carrier 122, and merged with the power of the motor 13 to jointly drive the input shaft 11 to rotate, providing driving force for the vehicle.

[0041] According to some embodiments of this utility model, such as Figures 1-3 As shown, the powertrain 1 has a pure electric mode. In pure electric mode, the output of the engine 14 is disconnected from the planetary carrier 122, so that only the electric motor 13 serves as the power source to drive the vehicle. The pure electric mode has a first gear and a second gear, and the switching of different transmission ratios is achieved by controlling the state of the first clutch 15.

[0042] In the first gear, the first clutch 15 is disengaged, and the sun gear 121, planet carrier 122, and ring gear 123 of the planetary gear assembly 12 can rotate relatively independently. The motor 13 receives power through the sun gear 121, and after reduction and torque amplification by the planetary gears, it outputs power to the input shaft 11 through the ring gear 123, achieving a larger torque output, which is suitable for vehicle starting or low-speed driving conditions.

[0043] In the second gear, the first clutch 15 is engaged, causing the sun gear 121, planetary carrier 122, and ring gear 123 to rotate synchronously as a whole. At this time, the planetary gear assembly 12 rotates as a whole, and the power of the motor 13 is directly transmitted to the input shaft 11, achieving higher transmission efficiency, which is suitable for high-speed cruising conditions of vehicles.

[0044] By controlling the state of the first clutch 15, different transmission ratios can be switched, which not only ensures the power performance in pure electric mode, but also optimizes the energy utilization efficiency in different speed ranges.

[0045] According to some embodiments of this utility model, such as Figure 1 As shown, the powertrain 1 also includes a housing 16 and a second clutch 17. The second clutch 17 is provided with a first engagement portion and a second engagement portion that can be selectively engaged or disengaged. The first engagement portion is connected to the housing 16, and the second engagement portion is connected to the planetary carrier 122. The planetary carrier 122 becomes a stationary component, allowing the planetary gear assembly 12 to form a torque-increasing ratio, thereby significantly improving the torque output capability under low-speed conditions. In the first gear of pure electric mode, the first engagement portion engages with the second engagement portion, thereby effectively increasing the output torque of the motor 13 to meet the power demand of the vehicle in the first gear of pure electric mode.

[0046] By controlling the engagement and disengagement of the first and second joints, the powertrain 1 can smoothly switch between different gears, ensuring both power performance during pure electric drive and improving energy utilization efficiency.

[0047] According to some embodiments of this utility model, such as Figure 1 As shown, the powertrain 1 also has a first hybrid mode and a second hybrid mode, which can switch to a better working mode according to the vehicle's operating conditions.

[0048] In the first hybrid mode, the output of the engine 14 is connected to the planetary carrier 122, allowing the power of the engine 14 to be input into the planetary gear assembly 12, and the first clutch 15 is engaged. At this time, the sun gear 121, planetary carrier 122, and ring gear 123 are locked in a synchronous rotation state by the first clutch 15, and the power of the engine 14 and the motor 13 is directly coupled through the planetary gear assembly 12 and output to the input shaft 11.

[0049] In the second hybrid mode, the output of engine 14 is connected to planetary carrier 122, allowing the power of engine 14 to be input into planetary gear set 12, and the first clutch 15 is disengaged. At this time, the components of planetary gear set 12 can move relatively independently, and the power of engine 14 is transmitted through a specific transmission path, achieving electronic continuously variable transmission (eCVT) operation. The power output of engine 14 is input to planetary gear set 12 via planetary carrier 122, and the power output of motor 13 is input to planetary gear set 12 via sun gear 121, enabling continuously variable coupling of the power from engine 14 and motor 13 within planetary gear set 12. The coupled power is then transmitted to input shaft 11 via planetary gear set 12.

[0050] By switching between the first hybrid mode and the second hybrid mode, Powertrain 1 can select a better working state according to the operating conditions, improving fuel economy and driving smoothness while ensuring power performance.

[0051] According to some embodiments of this utility model, such as Figure 1 As shown, the powertrain 1 also has a parking power generation mode. In this mode, the output of the engine 14 is connected to the planetary carrier 122, allowing the power of the engine 14 to be input into the planetary gear assembly 12, and the first clutch 15 is disengaged. At this time, the sun gear 121, planetary carrier 122, and ring gear 123 of the planetary gear assembly 12 can move relatively independently.

[0052] The power output from engine 14 is input to planetary gear assembly 12 via planetary carrier 122. Since the first clutch 15 is disengaged, the rotation of planetary carrier 122 does not directly drive the sun gear 121 and ring gear 123 to rotate synchronously. The output of motor 13 is connected to the sun gear 121. During power transmission within planetary gear assembly 12, engine 14 drives planetary carrier 122 to rotate, and the planetary gears interact with the sun gear 121, causing the sun gear 121 to rotate under the drive of the planetary gears, thereby driving motor 13 to generate electricity.

[0053] In the parking power generation mode, the power of engine 14 is converted into electrical energy to charge the vehicle's battery, making fuller use of the engine 14's power. It can still charge the battery when the vehicle is parked, thus improving energy efficiency. According to some embodiments of this utility model, such as Figure 1 As shown, the powertrain 1 also has a pure engine 14 mode. In pure engine 14 mode, the output end of the engine 14 is connected to the planetary carrier 122, so that the power of the engine 14 is input to the planetary gear assembly 12, and the first clutch 15 is engaged. When the first clutch 15 is engaged, the sun gear 121, planetary carrier 122 and ring gear 123 of the planetary gear assembly 12 are locked in a synchronous rotation state.

[0054] At this time, the power output by the engine 14 is directly transmitted to the entire planetary gear assembly 12 through the planetary carrier 122. Since all components rotate synchronously, the planetary gear assembly 12 no longer adjusts the power of the engine 14, but directly transmits the power of the engine 14 to the input shaft 11 connected to the gear ring 123, thereby driving the vehicle.

[0055] In pure engine 14 mode, electric motor 13 does not participate in power output, and the vehicle is driven entirely by the power of engine 14.

[0056] According to some embodiments of this utility model, such as Figures 1-4 As shown, the powertrain 1 also includes a multi-speed transmission 18. The input end of the multi-speed transmission 18 is selectively connected to the output end of the engine 14. Therefore, the multi-speed transmission 18 and the engine 14 are not always connected, but can be connected or disconnected according to actual needs. When the engine 14 is not required to directly participate in power output, the multi-speed transmission 18 can be disconnected from the engine 14. When the input end of the multi-speed transmission 18 is connected to the output end of the engine 14, the engine 14 can provide power to the multi-speed transmission 18, which then adjusts the power transmission speed.

[0057] The output end of the multi-speed transmission 18 is connected to the input shaft 11, transmitting the power after speed adjustment to the input shaft 11. The multi-speed transmission 18 is suitable for adjusting the transmission ratio, realizing the switching of different transmission ratios. According to the actual driving needs of the vehicle, by adjusting the transmission ratio of the power output of the engine 14, the working efficiency of the engine 14 can be optimized, meeting the power and speed requirements of the vehicle under different operating conditions.

[0058] According to some embodiments of this utility model, such as Figures 1-4 As shown, the output end of the engine 14 can be selectively connected to the input end of the multi-speed transmission 18 via the third clutch 19, allowing the power transmission between the engine 14 and the multi-speed transmission 18 to be flexibly controlled according to operating conditions. When the third clutch 19 is engaged, the power of the engine 14 can be transmitted to the multi-speed transmission 18, and after gear adjustment, it is transmitted to the input shaft 11 through the output end; when the third clutch 19 is disengaged, the engine 14 and the multi-speed transmission 18 are completely separated, so that in pure electric mode, the engine 14 can be completely disconnected from the transmission system, reducing unnecessary mechanical losses.

[0059] According to some embodiments of this utility model, such as Figure 5As shown, the powertrain 1 also includes a transfer case 20, a front axle output shaft 21, and a rear axle output shaft 22. The input end of the transfer case 20 is connected to the input shaft 11, so that the power transmitted from the input shaft 11 enters the transfer case 20. The transfer case 20 has a first output end and a second output end, through which the transfer case 20 can distribute the input power.

[0060] The front axle output shaft 21 is connected to the first output end to transmit power. The front axle output shaft 21 is connected to the front axle of the vehicle and is responsible for transmitting power to the front wheels to drive the vehicle forward. Through the first output end of the transfer case 20, the powertrain 1 can provide the necessary driving force to the front wheels.

[0061] The rear axle output shaft 22 is connected to the second output end to transmit power. The rear axle output shaft 22 is connected to the rear axle of the vehicle and is responsible for transmitting power to the rear wheels. Through the second output end of the transfer case 20, the powertrain 1 can provide the necessary driving force to the rear wheels. The rear axle output shaft 22 and the front axle output shaft 21 work together to provide stable driving force to the vehicle.

[0062] Power is distributed to the front axle output shaft 21 and the rear axle output shaft 22 via the transfer case 20, enabling the powertrain 1 to achieve four-wheel drive. The power distribution ratio between the front and rear axles can be adjusted according to actual driving needs.

[0063] According to some embodiments of this utility model, such as Figure 5 As shown, the transfer case 20 is provided with a second planetary gear assembly 201. The second planetary gear assembly 201 includes a second sun gear 2011, a second planet carrier 2012 and a second ring gear 2013 that cooperate with each other. The transfer case 20 can realize a variety of power distribution methods through the second planetary gear assembly 201.

[0064] One of the second sun gear 2011, the second planetary carrier 2012, and the second ring gear 2013 is connected to the input shaft 11, so that the power output from the input shaft 11 can be directly transmitted to the second planetary gear assembly 201 to facilitate the distribution of the power output from the input shaft 11.

[0065] Another of the second sun gear 2011, the second planetary carrier 2012, and the second ring gear 2013 is connected to the front axle output shaft 21, so that the front axle output shaft 21 can transmit the power distributed by the second planetary gear assembly 201 to the front axle to drive the front wheels to rotate.

[0066] The remaining one of the second sun gear 2011, the second planetary carrier 2012, and the second ring gear 2013 is connected to the rear axle output shaft 22, so that the rear axle output shaft 22 can transmit the power distributed by the second planetary gear assembly 201 to the rear axle to drive the rear wheel to rotate.

[0067] Power is transmitted to the second planetary gear set 201 via the input shaft 11. The second planetary gear set 201 distributes power according to the connection relationship and motion characteristics of its internal second sun gear 2011, second planetary carrier 2012, and second ring gear 2013. A portion of the power is transmitted to the front axle via the front axle output shaft 21, and the other portion is transmitted to the rear axle via the rear axle output shaft 22, thus achieving four-wheel drive. By rationally designing the connection relationships and transmission ratios of the components in the second planetary gear set 201, the power distribution ratio to the front and rear axles can be flexibly adjusted to adapt to different driving conditions and the needs of four-wheel drive vehicles.

[0068] By adjusting the relevant transmission parameters of the second planetary gear set 201, it is easy to adapt to different types of four-wheel drive vehicles, meeting the diverse power distribution needs of different models. Furthermore, the planetary gear set has a compact structure, enabling efficient power distribution within a limited space, resulting in a relatively small overall powertrain 1 size. This facilitates layout and installation on the vehicle, reducing the difficulty of vehicle integration.

[0069] The vehicle according to this utility model is briefly described below.

[0070] The vehicle according to this utility model includes the powertrain 1 in any of the above embodiments. Since the vehicle according to this utility model includes the powertrain 1 in any of the above embodiments, it can achieve multiple operating modes, effectively enhancing the output of the depleted power supply and ensuring smooth mode switching, thereby improving vehicle performance and driving experience.

[0071] 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.

[0072] 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 in that, include: Input axis (11); Planetary gear assembly (12), the planetary gear assembly (12) includes a sun gear (121), a planet carrier (122) and a ring gear (123) that cooperate with each other, one of the sun gear (121), the planet carrier (122) and the ring gear (123) being connected to the input shaft (11). The motor (13) has its output end connected to another of the sun gear (121), the planet carrier (122), and the ring gear (123); Engine (14), the output of which can be selectively connected to one of the sun gear (121), the planet carrier (122), and the ring gear (123); A first clutch (15) is connected to at least two of the sun gear (121), the planet carrier (122), and the ring gear (123), and the first clutch (15) is adapted to selectively engage or disengage at least two of the sun gear (121), the planet carrier (122), and the ring gear (123) to switch between an engaged state and a disengaged state; When the first clutch (15) is engaged, the sun gear (121), the planet carrier (122), and the ring gear (123) rotate synchronously as a whole; When the first clutch (15) is disengaged, the sun gear (121), the planet carrier (122), and the ring gear (123) rotate relatively independently.

2. The powertrain according to claim 1, characterized in that, The input shaft (11) is connected to the gear ring (123), the motor (13) is connected to the sun gear (121), and the output end of the engine (14) is optionally connected to the planet carrier (122).

3. The powertrain according to claim 2, characterized in that, The powertrain has a pure electric mode in which the output of the engine (14) is disconnected from the planetary carrier (122), and the pure electric mode has a first gear and a second gear. In the first gear, the first clutch (15) is in the disengaged state; In the second gear, the first clutch (15) is engaged.

4. The powertrain according to claim 3, characterized in that, Also includes: Shell (16); The second clutch (17) is provided with a first engagement portion and a second engagement portion that can be selectively engaged or disengaged. The first engagement portion is connected to the housing (16), and the second engagement portion is connected to the planetary carrier (122). in In the first gear of the pure electric mode, the first engagement portion engages with the second engagement portion.

5. The powertrain according to claim 3 or 4, characterized in that, The powertrain also has a first hybrid mode and a second hybrid mode; In the first hybrid mode, the output end of the engine (14) is connected to the planetary carrier (122), and the first clutch (15) is in the engaged state; In the second hybrid mode, the output end of the engine (14) is connected to the planetary carrier (122), and the first clutch (15) is in the disengaged state.

6. The powertrain according to claim 3 or 4, characterized in that, The powertrain also has a parking power generation mode, in which the output end of the engine (14) is connected to the planetary carrier (122) and the first clutch (15) is in the disengaged state.

7. The powertrain according to claim 3 or 4, characterized in that, The powertrain also has a pure engine (14) mode, in which the output end of the engine (14) is connected to the planetary carrier (122) and the first clutch (15) is engaged.

8. The powertrain according to claim 1, characterized in that, Also includes: A multi-speed transmission device (18) is provided, the input end of which is selectively connected to the output end of the engine (14), the output end of which is connected to the input shaft (11), and the multi-speed transmission device (18) is adapted to adjust the transmission ratio.

9. The powertrain according to claim 1, characterized in that, Also includes: Transfer case (20), the input end of the transfer case (20) is connected to the input shaft (11), and the transfer case (20) has a first output end and a second output end; The front axle output shaft (21) is driven to the first output end; The rear axle output shaft (22) is driven to the second output end.

10. A vehicle, characterized in that, Includes the powertrain described in any one of claims 1-9.

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