Power system and vehicle

Abstract

The utility model discloses a power system and a vehicle. The power system comprises a shell; an engine; a first driving motor; a transmission; the first planetary gear assembly comprises a first sun gear, a first planet gear, a first planet carrier and a first gear ring, an output shaft of the engine is connected with the first planet carrier, an output shaft of the driving motor is connected with the first sun gear, and the first gear ring is suitable for being connected with a transmission; the adapter is selectively connected with the output shaft of the engine; and / or the adapter is selectively connected with the output shaft of the driving motor. Therefore, the adapter is selectively connected with the output shaft of the engine; and / or the adapter is selectively connected with the output shaft of the driving motor, so that not only can the oil consumption be reduced and the vehicle driving smoothness be improved, but also the switching of three working modes of power division, engine direct drive and pure electric drive can be realized to meet different driving requirements of the vehicle, and meanwhile, the driving capability under the pure electric working condition can be improved.

Description

Technical Field

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

[0002] With the development of technology and the improvement of people's living standards, vehicles have become an indispensable means of transportation. Vehicles are equipped with a power system that provides power to meet the vehicle's driving needs.

[0003] In related technologies, some longitudinal hybrid architectures adopt a P2 motor + multi-speed transmission approach, which is not only structurally complex but also suffers from poor fuel economy and poor driving smoothness during gear shifts. Furthermore, due to the single-motor architecture, the P2 motor cannot be used when the battery is depleted. Other longitudinal hybrid architectures adopt a power split + multi-speed transmission approach, which can greatly improve fuel economy. However, in high-speed conditions, the power split architecture cannot achieve direct engine drive, and some energy is used for power generation, resulting in deviations in fuel consumption at high speeds. In addition, if this architecture is used in plug-in hybrid vehicles, the generator will experience drag losses, leading to high energy consumption. Plug-in hybrid vehicles still have compatibility issues. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a power system that not only has low fuel consumption but also meets different driving needs of the vehicle, while improving the vehicle's driving efficiency and driving smoothness.

[0005] This utility model further proposes a vehicle.

[0006] The power system according to this utility model includes: a housing; an engine disposed within the housing and having an engine output shaft; a first drive motor disposed within the housing and having a drive motor output shaft; a transmission disposed within the housing; a first planetary gear assembly including a first sun gear, first planet gears, a first planet carrier, and a first ring gear, the first planet gears meshing between the first sun gear and the first ring gear, the first planet carrier being connected to the first planet gears, the engine output shaft being connected to the first planet carrier, the drive motor output shaft being connected to the first sun gear, and the first ring gear being adapted to be connected to the transmission; a coupling disposed within and connected to the housing, the coupling selectively connected to the engine output shaft; and / or the coupling selectively connected to the drive motor output shaft.

[0007] Therefore, by selectively connecting the connector to the engine output shaft and / or selectively connecting the connector to the drive motor output shaft, not only can fuel consumption be reduced and vehicle driving smoothness improved, but also the switching between three working modes—power splitting, engine direct drive, and pure electric drive—can be achieved to meet different driving needs of the vehicle, while also improving the driving capability under pure electric conditions.

[0008] In some examples of this utility model, the connector includes a first connector and a second connector, wherein the first connector is selectively connected to the engine output shaft and the second connector is selectively connected to the drive motor output shaft.

[0009] In some examples of this invention, the first coupling is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch.

[0010] In some examples of this invention, the second coupling is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch.

[0011] In some examples of this utility model, the power system further includes a second drive motor, the power input shaft of the second drive motor being connected to the first gear ring, and the power input shaft of the transmission being connected to the first gear ring.

[0012] In some examples of this utility model, the transmission includes: a second planetary gear assembly and a third planetary gear assembly. The second planetary gear assembly includes a second sun gear, a second planetary gear, a second planetary carrier, and a second ring gear. The second planetary gear meshes between the second sun gear and the second ring gear, and the second planetary carrier is connected to the second planetary gear. The third planetary gear assembly includes a third sun gear, a third planetary gear, a third planetary carrier, and a third ring gear. The third planetary gear meshes between the third sun gear and the third ring gear, and the third planetary carrier is connected to the third planetary gear. Both the second sun gear and the third sun gear are connected to the power input shaft of the transmission. The transmission also includes a first clutch. The second planetary carrier is connected to the power output shaft of the transmission, and the first clutch is disposed on the second planetary carrier. The first clutch is adapted to selectively engage with the third ring gear.

[0013] In some examples of this invention, the coupling further includes a third coupling that selectively engages with the second gear ring.

[0014] In some examples of this invention, the transmission further includes a second clutch disposed on the power input shaft of the transmission, the second clutch selectively engaging or disengaging simultaneously with the second sun gear and the third sun gear.

[0015] In some examples of this invention, the third planetary carrier is connected to the power input shaft of the transmission.

[0016] The vehicle according to an embodiment of the present invention includes: the power system described above.

[0017] 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

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the power system according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the power system in power split operation mode according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the power system in the engine direct drive working mode according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the power system according to an embodiment of the present invention in dual-motor pure electric working mode;

[0023] Figure 5 This is a schematic diagram of the multi-gear operation of a transmission according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 100. Power system;

[0026] 10. Engine; 101. Engine output shaft;

[0027] 20. First drive motor; 201. Drive motor output shaft;

[0028] 30. Transmission; 301. Second planetary gear assembly; 302. Third planetary gear assembly; 303. First clutch; 304. Second clutch;

[0029] 3011, Second Sun Gear; 3012, Second Planetary Gear; 3013, Second Planetary Carrier; 3014, Second Gear Ring;

[0030] 3021, Third Sun Gear; 3022, Third Planetary Gear; 3023, Third Planetary Carrier; 3024, Third Gear Ring;

[0031] 40. First planetary gear assembly; 401. First sun gear; 402. First planet gear; 403. First planet carrier; 404. First gear ring;

[0032] 50. Connector; 501. First connector; 502. Second connector; 503. Third connector;

[0033] 60. Second drive motor. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0035] The following is for reference. Figures 1-5 The power system 100 according to an embodiment of the present invention is described. The power system 100 can be applied to a vehicle.

[0036] Combination Figures 1-5 As shown, the power system 100 according to this utility model mainly includes: a housing, an engine 10, a first drive motor 20, a transmission 30, a first planetary gear assembly 40, and a coupling 50. The housing provides physical protection for the internal engine 10, motor, and other power system 100 and related components, preventing damage from dust, moisture, foreign objects, etc., in the external environment. Simultaneously, the housing also provides cushioning and protection in the event of a collision. Furthermore, the housing surrounding flammable and explosive components mostly possesses fire-retardant properties to reduce the risk of fire.

[0037] Furthermore, the engine 10 is housed within the housing and has an engine output shaft 101, which transmits the power generated by the engine 10 to a transmission device connected thereto, so as to drive the vehicle forward or backward.

[0038] Furthermore, the first drive motor 20 is disposed inside the housing and has a drive motor output shaft 201. The motor output shaft can transmit power to drive external devices such as gears, pulleys, and couplings connected to it to rotate together, thereby realizing the drive and transmission of various mechanical equipment.

[0039] Furthermore, the transmission 30 is housed within a housing, which not only acts as a protective barrier, encapsulating and protecting the gears, shafts, and other transmission components inside the transmission 30 to prevent damage from dust, debris, water, and other contaminants, but also provides necessary mounting points and support for the internal components of the transmission 30 to ensure that the transmission 30 remains stable during vehicle operation and to prevent damage to the internal components due to vibration or impact.

[0040] Further, the first planetary gear assembly 40 includes a first sun gear 401, a first planet gear 402, a first planet carrier 403, and a first ring gear 404. The first planet gear 402 meshes between the first sun gear 401 and the first ring gear 404. The first planet carrier 403 is connected to the first planet gear 402. The engine output shaft 101 is connected to the first planet carrier 403. The drive motor is connected to the first sun gear 401. The first ring gear 404 is adapted to be connected to the transmission 30. Specifically, the first sun gear 401 is located at the center of the first planetary gear assembly 40. The first planet gear 402 is mounted on the first planet carrier 403 and disposed between the first sun gear 401 and the first ring gear 404. The first planet gear 402 meshes simultaneously with the gears on the outer circumference of the first sun gear and the inner circumference of the first ring gear. The first planet gear 402 can not only rotate on its own axis but also revolve around the first sun gear 401. By setting the first planetary gear assembly 40 and fixing one of the first sun gear 401, the first planetary carrier 403, and the first ring gear 404, one of the other two components becomes the driving component and the other becomes the driven component. The driving component drives the driven component to rotate simultaneously. This not only enables different transmission ratios and output torques, allowing the vehicle to decelerate and accelerate to meet different driving needs, but also optimizes the efficiency matching between the engine 10 and the first drive motor 20, which is beneficial to improving the power performance of the hybrid system 100 and improving the smoothness of the vehicle when shifting gears or changing working modes.

[0041] Furthermore, the engine output shaft 101 is connected to the first planetary carrier 403, the drive motor output shaft 201 is connected to the first sun gear 401, and the first ring gear 404 is adapted to be connected to the transmission 30. This allows the power output from the engine 10 to be transmitted to the first planetary gear assembly 40 via the first planetary carrier 403, and the power output from the first drive motor 20 to be transmitted to the first planetary gear assembly 40 via the first sun gear 401. Alternatively, the energy generated by the first planetary gear assembly 40 can be transmitted to the drive motor via the first sun gear 401 and stored as electrical energy. This allows the power output from the engine 10 and / or the first drive motor 20 to be transmitted to the transmission 30, ensuring the normal operation of the transmission 30. This configuration optimizes power transmission and distribution, improves vehicle driving efficiency, and allows for smoother gear shifting by controlling the relative movement between different gear components of the first planetary gear assembly 40, thereby improving the smoothness of vehicle operation.

[0042] Furthermore, in a hybrid electric vehicle, the engine 10 and the first drive motor 20 achieve functions such as power transmission, power distribution, and power allocation by adjusting the operating states and coordinating the various components of the first planetary gear assembly 40.

[0043] Furthermore, the coupling 50 is disposed within and connected to the housing, and the coupling 50 is selectively connected to the engine output shaft 101; and / or the coupling 50 is selectively connected to the drive motor output shaft 201. If the coupling 50 is closed and connected only to the engine output shaft 101, a direct-drive engine operating mode can be achieved. This operating mode is suitable for high-speed conditions and can improve system efficiency. If the coupling 50 is closed and connected only to the drive motor output shaft 201, a pure electric motor operating mode can be achieved. This operating mode is suitable for plug-in hybrid architectures and can provide greater wheel-side torque for reverse and forward gears, improving off-road capability. If the coupling 50 is connected to the engine output shaft 101, and another coupling 50 is also connected to the drive motor output shaft 201, and both couplings 50 are closed, both the engine 10 and the drive motor can participate in driving, achieving a power-split operating mode. This operating mode is suitable for low-speed driving conditions and allows the engine 10 to operate at higher efficiency, thus improving efficiency.

[0044] Therefore, by selectively connecting the coupling 50 to the engine output shaft 101 and / or selectively connecting the coupling 50 to the drive motor output shaft 201, and adapting the engine 10 to drive the first planetary carrier 403 and the first drive motor 20 to drive the first sun gear 401, this not only solves the problem of high fuel consumption caused by the engine's inability to drive directly under high-speed conditions and improves the smoothness of vehicle driving, but also enables the switching of three working modes: power splitting, direct drive of the engine 10, and pure electric drive, to meet different driving needs of the vehicle, while also improving the driving capability under pure electric conditions.

[0045] In some embodiments of this utility model, the housing may be designed with heat sinks or an integrated cooling system to improve heat exchange efficiency and ensure that the overall temperature of the power system 100 is kept within a safe range.

[0046] In some embodiments of this utility model, the number of the first sun gear 401 and the first ring gear 404 in the first planetary gear assembly 40 is one, and the number of the first planet gear 402 can be one or more.

[0047] Combination Figure 2 , Figure 3 and Figure 4As shown, the coupling 50 includes a first coupling 501 and a second coupling 502. The first coupling 501 is selectively connected to the engine output shaft 101, and the second coupling 502 is selectively connected to the drive motor output shaft 201. Specifically, if the first coupling 501 is engaged, the engine output shaft 101 is connected to the first planetary carrier 403, and the engine 10 participates in driving. If the first coupling 501 is disengaged, the engine output shaft 101 is not connected to the first planetary carrier 403, and the engine 10 does not participate in driving. The second coupling 502 can be used to lock and unlock the rotor of the first drive motor. If the second coupling 502 is engaged, the drive motor is connected to the first sun gear 401, and the drive motor participates in driving. If the second coupling 502 is disengaged, the drive motor is not connected to the first sun gear 401, and the drive motor does not participate in driving. With this configuration, the driving mode of the vehicle can be changed by controlling the engagement and disengagement of the first coupling 501 and the second coupling 502. The appropriate driving mode can be selected according to the specific road conditions and environment to improve the driving efficiency of the vehicle and reduce vehicle wear.

[0048] In some embodiments of this utility model, the first connector 501 and the second connector 502 may be selectively provided according to specific needs.

[0049] Combination Figure 2 , Figure 3 and Figure 4 As shown, the first engagement 501 is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch. Specifically, by making the first engagement 501 at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch, not only is operation simple, but stable power transmission can be ensured, precise control of power engagement or disengagement can be achieved, and power transmission efficiency can be improved. At the same time, it can also help protect mechanical equipment from overload or other damage. For example, a one-way clutch can prevent damage caused by reverse rotation, a synchronizer can reduce wear and shock during gear shifting, and a dog clutch can be designed to slip when a certain torque is exceeded to avoid overload.

[0050] Combination Figure 2 , Figure 3 and Figure 4 As shown, the second engagement 502 is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch. Specifically, by making the second engagement 502 at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch, not only is operation simple, but stable power transmission can be ensured, precise control of power connection or disconnection can be achieved, and power transmission efficiency can be improved. At the same time, it can also help protect mechanical equipment from overload or other damage.

[0051] Combination Figure 2 , Figure 3 and Figure 4As shown, the power system 100 also includes a second drive motor 60, the power input shaft of which is connected to the first gear ring 404, and the power input shaft of the transmission 30 is also connected to the first gear ring 404. Specifically, by connecting the power input shaft of the second drive motor 60 to the first gear ring 404, the second drive motor 60 can assist in vehicle driving or recover braking energy for storage and later use; the power input shaft of the transmission 30 is connected to the first gear ring 404, which not only allows for the output of different transmission ratios and torques through the first planetary gear assembly 40 to optimize vehicle transmission performance and fuel economy and meet different driving needs, but also achieves smooth power transmission, improves the stability of the vehicle power system 100, and enhances vehicle smoothness.

[0052] Combination Figure 1 and Figure 5 As shown, the transmission 30 includes a second planetary gear assembly 301 and a third planetary gear assembly 302. The second planetary gear assembly 301 includes a second sun gear 3011, a second planetary gear 3012, a second planetary carrier 3013, and a second ring gear 3014. The second planetary gear 3012 meshes between the second sun gear 3011 and the second ring gear 3014. The second planetary carrier 3013 is connected to the second planetary gear 3012.

[0053] The third planetary gear assembly 302 includes a third sun gear 3021, a third planet gear 3022, a third planet carrier 3023, and a third ring gear 3024. The third planet gear 3022 meshes between the third sun gear 3021 and the third ring gear 3024. The third planet carrier 3023 is connected to the third planet gear 3022. Both the second sun gear 3011 and the third sun gear 3021 are connected to the power input shaft of the transmission 30, so that power can be transmitted to the inside of the transmission 30 through the second sun gear 3011 and the third sun gear 3021.

[0054] The transmission 30 also includes a first clutch 303. A second planetary carrier 3013 is connected to the power output shaft of the transmission 30. The first clutch 303 is mounted on the second planetary carrier 3013 and is adapted to selectively engage with a third ring gear 3024. Specifically, the second planetary carrier 3013 is connected to the power output shaft of the transmission 30, thus enabling power output within the transmission 30 to be achieved through the second planetary carrier 3013, facilitating the adjustment of vehicle speed or driving conditions. Furthermore, the first clutch 303, mounted on the second planetary carrier 3013 and adapted to selectively engage with the third ring gear 3024, allows control of the connection between the second planetary carrier and the third ring gear 3024 through the engagement and disengagement of the first clutch 303. This, in turn, regulates the operating conditions of the third planetary gear assembly 302, thereby controlling the gear positions of the transmission 30 and ultimately regulating the vehicle speed or driving conditions.

[0055] With this configuration, the gear shifting and speed change functions of the transmission 30 can be realized through the coordinated action of the second planetary gear assembly 301 and the third planetary gear assembly 302, as well as the regulating action of the first clutch 303, to meet the different driving needs of the vehicle.

[0056] Combination Figure 1 and Figure 5 As shown, the coupling 50 also includes a third coupling 503, which selectively engages with the second gear ring 3014. Specifically, by controlling the engagement and disengagement of the third coupling 503, the operating condition of the second gear ring 3014 is regulated, thereby achieving the regulation of the gear position of the transmission 30 through the coordinated operation of the second planetary gear assembly 301, and thus realizing the regulation of the vehicle's driving speed or driving condition.

[0057] Combination Figure 1 and Figure 5 As shown, the transmission 30 also includes a second clutch 304, which is disposed on the power input shaft of the transmission 30. The second clutch 304 selectively engages or disengages simultaneously with the second sun gear 3011 and the third sun gear 3021. Specifically, by selectively engaging or disengaging the second clutch 304 with the second sun gear 3011 and the third sun gear 3021, and by disposing of the second clutch 304 on the power input shaft of the transmission 30, the engagement and disengagement of the second clutch 304 can be controlled, thereby controlling whether there is power input at the second sun gear 3011 and the third sun gear 3021. This, in turn, allows for the adjustment of the gear positions of the transmission 30 through the combined action of the second planetary gear assembly 301 and the third planetary gear assembly 302, thereby controlling the vehicle's speed or driving conditions and optimizing the vehicle's power performance.

[0058] Combination Figure 1 and Figure 5 As shown, the third planetary carrier 3023 is connected to the power input shaft of the transmission 30. Specifically, by connecting the third planetary carrier 3023 to the power input shaft of the transmission 30, the third planetary gear assembly 302 can coordinate the shifting and gear changing operations of the transmission 30 by driving the third planetary carrier 3023. Furthermore, the power transmitted to the transmission 30 can be input into the transmission 30 through the third planetary carrier 3023, thereby achieving the regulation of the operating state of the transmission 30.

[0059] Combination Figure 1 and Figure 5 As shown, the design of the three-speed transmission 30 is achieved through the combination of planetary gear set and clutch and engagement 50. This not only enables the vehicle to have multiple gears and control the vehicle speed, but also improves the smoothness of the transmission 30 during gear shifting and reduces the impact during gear shifting.

[0060] Furthermore, the gear control of the transmission 30 is shown in Table 1. The transmission 30 is designed to have three gears by controlling the engagement and disengagement of the first clutch 303, the second clutch 304, and the third engagement mechanism 503. It should be noted that the transmission 30 module in this invention can be replaced by other numbers of gears or shift mechanisms.

[0061] Table 1. Transmission Three-Gear Control Table

[0062]

[0063] The vehicle according to this utility model can mainly include the aforementioned power system 100. Specifically, since the power system 100 has a simpler structure and better performance, applying the power system 100 to a vehicle can not only optimize the vehicle's fuel economy but also meet different driving needs, while improving the vehicle's driving efficiency and driving smoothness.

[0064] 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", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0065] 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., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0066] 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 power system, characterized in that, include: case; An engine (10) is disposed within the housing and has an engine output shaft (101). The first drive motor (20) is disposed inside the housing and has a drive motor output shaft (201). A transmission (30) is disposed within the housing; The first planetary gear assembly (40) includes a first sun gear (401), a first planet gear (402), a first planet carrier (403), and a first ring gear (404). The first planet gear (402) meshes between the first sun gear (401) and the first ring gear (404). The first planet carrier (403) is connected to the first planet gear (402). The engine output shaft (101) is connected to the first planet carrier (403). The drive motor output shaft (201) is connected to the first sun gear (401). The first ring gear (404) is adapted to be connected to the transmission (30). A connector (50) disposed within and connected to the housing, the connector (50) being selectively connected to the engine output shaft (101); and / or the connector (50) being selectively connected to the drive motor output shaft (201).

2. The power system according to claim 1, characterized in that, The connector (50) includes a first connector (501) and a second connector (502), the first connector (501) being selectively connected to the engine output shaft (101) and the second connector (502) being selectively connected to the drive motor output shaft (201).

3. The power system according to claim 2, characterized in that, The first coupling (501) is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch.

4. The power system according to claim 2, characterized in that, The second coupling (502) is at least one of a mechanical one-way clutch, a synchronizer, and a dog clutch.

5. The power system according to claim 1, characterized in that, It also includes a second drive motor (60), the power input shaft of which is connected to the first gear ring (404), and the power input shaft of the transmission (30) is connected to the first gear ring (404).

6. The power system according to claim 1, characterized in that, The transmission (30) includes a second planetary gear assembly (301) and a third planetary gear assembly (302). The second planetary gear assembly (301) includes a second sun gear (3011), a second planetary gear (3012), a second planetary carrier (3013), and a second ring gear (3014). The second planetary gear (3012) meshes between the second sun gear (3011) and the second ring gear (3014). The second planetary carrier (3013) is connected to the second planetary gear (3012). The third planetary gear assembly (302) includes a third sun gear (3021), a third planet gear (3022), a third planet carrier (3023), and a third ring gear (3024). The third planet gear (3022) meshes between the third sun gear (3021) and the third ring gear (3024). The third planet carrier (3023) is connected to the third planet gear (3022). Both the second sun gear (3011) and the third sun gear (3021) are connected to the power input shaft of the transmission (30). The transmission (30) further includes a first clutch (303), the second planetary carrier (3013) is connected to the power output shaft of the transmission (30), the first clutch (303) is disposed on the second planetary carrier (3013), and the first clutch (303) is adapted to selectively engage with a third ring gear (3024).

7. The power system according to claim 6, characterized in that, The connector (50) further includes a third connector (503) which selectively engages with the second gear ring (3014).

8. The power system according to claim 6, characterized in that, The transmission (30) further includes a second clutch (304) disposed on the power input shaft of the transmission (30), the second clutch (304) selectively engaging or disengaging simultaneously with the second sun gear (3011) and the third sun gear (3021).

9. The power system according to claim 6, characterized in that, The third planetary carrier (3023) is connected to the power input shaft of the transmission (30).

10. A vehicle, characterized in that, The power system included in any one of claims 1-9.

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