Hybrid power system and vehicle

Abstract

The invention provides a hybrid power system and a vehicle, and belongs to the technical field of vehicles. The hybrid power system comprises an engine, a first motor, a second motor, a first wheel train, a brake, a second wheel train and an output wheel train, and the output wheel train is in transmission connection with wheels. The first gear train comprises a first sun gear, a first planet gear, a first planet carrier, a second sun gear and a second planet gear, the first sun gear is meshed with the first planet gear, and the second sun gear is meshed with the second planet gear. The first planet gear and the second planet gear are both connected with the first planet carrier, and an output shaft a of the engine is connected with the first sun gear. The second sun gear is connected with the first motor through a first hollow shaft, the output shaft a is sleeved with the first hollow shaft in an annular mode, and the first hollow shaft is connected with the brake. The first planet carrier is further connected with the second gear train, the second gear train is in transmission connection with the output gear train, and the second motor is in transmission connection with the output gear train. The hybrid power system can achieve different driving modes by controlling the brake to be engaged or disengaged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular to a hybrid power system and a vehicle. BACKGROUND

[0002] The hybrid power system is an important component in a hybrid vehicle, which uses an engine and an electric motor as a power source. The hybrid power system enables the vehicle to realize oil and electric driving modes, thereby achieving power performance and economy.

[0003] In the related art, the power source of the hybrid power system includes an engine and two electric motors. The hybrid power system can switch different driving modes by switching different power sources.

[0004] However, the structure of the hybrid power system in the related art is relatively single. With the increase in the types of vehicles, the single form of the hybrid power system cannot be applied to different types of vehicles. Therefore, how to enrich the structure of the hybrid power system is a technical problem to be solved. SUMMARY

[0005] The present disclosure provides a hybrid power system and a vehicle, which can solve the technical problems existing in the related art. The technical solutions of the hybrid power system and the vehicle are as follows.

[0006] In a first aspect, the present disclosure provides a hybrid power system, which comprises an engine, a first electric motor, a second electric motor, a first train, a brake, a second train, and an output train, wherein the output train is in driving connection with a vehicle wheel.

[0007] The first train comprises a first sun gear, a first planet gear, a first planet carrier, a second sun gear, and a second planet gear. The first sun gear is in meshing connection with the first planet gear, and the second sun gear is in meshing connection with the second planet gear. The first planet gear and the second planet gear are both in connection with the first planet carrier. An output shaft of the engine is in connection with the first sun gear. The second sun gear is in connection with the first electric motor through a first hollow shaft, and the first hollow shaft is sleeved on the output shaft. The first hollow shaft is in connection with the brake.

[0008] The first planet carrier is further in connection with the second train. The second train is in driving connection with the output train, and the second electric motor is in driving connection with the output train.

[0009] In a possible implementation manner, the hybrid power system further comprises a first clutch and a second clutch. The second train comprises a first planetary gear train and a second planetary gear train.

[0010] The first planetary gear train comprises a third sun gear, a third planetary gear, a second planetary carrier, a ring gear and a drive gear, the third sun gear is engaged with the third planetary gear, the third planetary gear is engaged with an inner ring of the ring gear, the second planetary carrier is connected with the third planetary gear, the third sun gear is connected with the first clutch through a first transmission shaft, the second planetary carrier is connected with the drive gear through a second hollow shaft, the second hollow shaft surrounds the first transmission shaft, and the output shaft is connected with the ring gear.

[0011] The second planetary gear train comprises a fourth sun gear, a fourth planetary gear and a third planetary carrier, the fourth sun gear is engaged with the fourth planetary gear, the fourth planetary gear is engaged with an inner ring of the ring gear, the third planetary carrier is connected with the fourth planetary gear, the fourth sun gear is connected with the second clutch through a third hollow shaft, and the third hollow shaft surrounds the second hollow shaft.

[0012] The output gear train comprises coaxially connected first, second and third gears, the first gear is engaged with the drive gear, the second gear is engaged with the third planetary carrier, the third gear is connected with the wheel drive, and the second motor is connected with the third gear in transmission.

[0013] In a possible implementation, a diameter ratio of the third sun gear to the third planetary gear is less than a diameter ratio of the fourth sun gear to the fourth planetary gear.

[0014] In a possible implementation, a transmission ratio of the drive gear to the first gear is less than a transmission ratio of the third planetary carrier to the second gear.

[0015] In a possible implementation, the hybrid power system further comprises a third gear train, a fourth gear train and a double clutch.

[0016] The third gear train comprises engaged fourth and fifth gears, the fourth gear train comprises engaged sixth and seventh gears, the fourth and sixth gears are coaxially connected with the second motor, and transmission ratios of the third and fourth gear trains are different.

[0017] The double clutch comprises a housing, a first sub-clutch and a second sub-clutch, the first and second sub-clutches are fixed inside the housing, the fifth gear is connected with the first sub-clutch through a fourth hollow shaft, the seventh gear and the second sub-clutch are connected through a second transmission shaft, the fourth hollow shaft surrounds the second transmission shaft, and the housing is coaxially connected with the first gear.

[0018] In a possible implementation, a diameter of the third gear is smaller than a diameter of the first gear and a diameter of the second gear.

[0019] In a possible implementation, a diameter of the first planetary gear is smaller than a diameter of the first sun gear and a diameter of the second planetary gear, and the diameter of the second planetary gear is greater than a diameter of the second sun gear.

[0020] In a possible implementation, the hybrid power system has a pure electric driving mode.

[0021] In the pure electric driving mode, the engine and the first motor are not working, and the second motor is working.

[0022] In a possible implementation, the hybrid power system has a series driving mode.

[0023] In the series driving mode, the engine drives the first motor to generate electricity through the first gear train, the first motor and the second motor are electrically connected, and the second motor is working.

[0024] In a second aspect, the present disclosure provides a vehicle, which comprises the hybrid power system according to any one of the first aspect.

[0025] The technical solutions provided by the present disclosure have at least the following beneficial effects:

[0026] The present disclosure provides a hybrid power system. When the engine is working, if the brake is disengaged, part of the power of the engine is transmitted to the first motor through the first gear train. In this way, the first motor can generate electricity, and the engine can always work in the high-efficiency range. If the brake is engaged, the power of the engine is transmitted to the second gear train through the first gear train, and then drives the wheels to rotate. In this way, by controlling the engagement or disengagement of the brake, different driving modes of the hybrid power system can be realized. Compared with the related art, the technical solutions provided by the present disclosure can enrich the structural form of the hybrid power system.

[0027] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. In the drawings:

[0029] Figure 1 is a structural schematic diagram of a hybrid power system according to an embodiment of the present disclosure;

[0030] Figure 2 is a schematic diagram of power transmission of a first gear of a hybrid power system according to an embodiment of the present disclosure;

[0031] Figure 3 is a schematic diagram of power transmission of a second gear of a hybrid power system according to an embodiment of the present disclosure;

[0032] Figure 4 is a schematic diagram of power transmission of a third gear of a hybrid power system according to an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of power transmission of a fourth gear of a hybrid power system according to an embodiment of the present disclosure;

[0034] Figure 6 is a schematic diagram of power transmission of a fifth gear of a hybrid power system according to an embodiment of the present disclosure;

[0035] Figure 7 is a schematic diagram of power transmission of a sixth gear of a hybrid power system according to an embodiment of the present disclosure;

[0036] Figure 8 is a schematic diagram of power transmission of a seventh gear of a hybrid power system according to an embodiment of the present disclosure;

[0037] Figure 9 is a schematic diagram of power transmission of an eighth gear of a hybrid power system according to an embodiment of the present disclosure;

[0038] Figure 10 is a schematic diagram of power transmission of a ninth gear of a hybrid power system according to an embodiment of the present disclosure;

[0039] Figure 11 is a schematic diagram of power transmission of a tenth gear of a hybrid power system according to an embodiment of the present disclosure.

[0040] Legend:

[0041] 1, second motor, 11, first sun gear, 12, first planet gear, 13, first carrier, 14, second sun gear, 15, second planet gear, 16, first hollow shaft;

[0042] 2, brake;

[0043] 3, second train, 31, first planetary gear train, 31a, first transmission shaft, 31b, second hollow shaft, 311, third sun gear, 312, third planet gear, 313, second carrier, 314, ring gear, 315, cogwheel, 32, second planetary gear train, 32a, third hollow shaft, 321, fourth sun gear, 322, fourth planet gear, 323, third carrier;

[0044] 4. Output gear train, 41, first gear wheel, 42, second gear wheel, 43, third gear wheel;

[0045] 5. First clutch;

[0046] 6. Second clutch;

[0047] 7. Third gear train, 7a, fourth hollow shaft, 71, fourth gear wheel, 72, fifth gear wheel;

[0048] 8. Fourth gear train, 8a, second drive shaft, 81, sixth gear wheel, 82, seventh gear wheel;

[0049] 9. Dual clutch, 91, housing, 92, first sub-clutch, 93, second sub-clutch;

[0050] 100. Engine, 100a, output shaft;

[0051] 200. First electric machine;

[0052] 300. Second electric machine.

[0053] The specific embodiments of the present disclosure have been shown by the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present disclosure by any means, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the drawings.

[0055] The terms used in the embodiments of the present disclosure are used only to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, technical terms or scientific terms used herein have the same meaning as understood by those skilled in the art to which the present disclosure belongs. The terms "first", "second", "third", and the like used in the specification of the patent application and the claims of the present disclosure do not denote any sequence, quantity, or importance, but are used to distinguish different components. Similarly, "one" or "a" and the like do not denote a quantity limitation, but denote the presence of at least one. "Include" or "contain" and the like mean that the elements or objects appearing before "include" or "contain" cover the elements or objects listed after "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] The embodiments of the present disclosure provide a hybrid power system, as shown in the drawings, Figure 1 The hybrid power system includes an engine 100, a first motor 200, a second motor 300, a first wheel train 1, a brake 2, a second wheel train 3, and an output wheel train 4, which is in driving connection with a wheel 400. The first wheel train 1 includes a first sun gear 11, a first planet gear 12, a first carrier 13, a second sun gear 14, and a second planet gear 15, the first sun gear 11 is in meshing connection with the first planet gear 12, and the second sun gear 14 is in meshing connection with the second planet gear 15. The first planet gear 12 and the second planet gear 15 are both connected with the first carrier 13, and an output shaft 100a of the engine 100 is connected with the first sun gear 11. The second sun gear 14 is connected with the first motor 200 through a first hollow shaft 16, and the first hollow shaft 16 is sleeved on the output shaft 100a, and the first hollow shaft 16 is connected with the brake 2. The first carrier 13 is also connected with the second wheel train 3, the second wheel train 3 is in driving connection with the output wheel train 4, and the second motor 300 is in driving connection with the output wheel train 4.

[0057] The hybrid power system further includes a battery pack, an inverter, and a transformer, the inverter and the transformer can drive the first motor 200 or the second motor 300 to rotate after converting the direct current output by the battery pack into three-phase alternating current.

[0058] The brake 2 is fixed to a box of the hybrid power system. When the brake 2 is engaged, the first motor 200 cannot rotate, and at this time, the fixed speed ratio is between the engine 100 and the first wheel train 1. When the brake 2 is not engaged, the power of the engine 100 can be transmitted to the first sun gear 11, the first planet gear 12, the first planet carrier 13, the second planet gear 15 and the second sun gear 14 in turn, and then drive the first motor 200 to rotate, so that the first motor 200 can generate electricity, and the engine 100 can always work in the high efficiency interval.

[0059] The technical scheme provided by the embodiment of the present disclosure is that when the engine 100 works, if the brake is separated, part of the power of the engine 100 is transmitted to the first motor 200 through the first wheel train. In this way, the first motor 200 can generate electricity, and the engine 100 can always work in the high efficiency interval. If the brake is engaged, the power of the engine 100 is transmitted to the second wheel train through the first wheel train, and then drives the wheel to rotate. In this way, by controlling the engagement or separation of the brake 2, different driving modes of the hybrid power system can be realized. Compared with the related art, the technical scheme provided by the embodiment of the present disclosure can enrich the structure of the hybrid power system.

[0060] In some examples, the diameter of the first planet gear 12 is smaller than the diameter of the first sun gear 11 and the diameter of the second planet gear 15, and the diameter of the second planet gear 15 is greater than the diameter of the second sun gear 14. In this way, when the engine 100 works, if the brake 2 is separated, the first motor 200 can have a higher rotating speed, which is beneficial to improve the power generation efficiency of the first motor 200.

[0061] In some examples, as shown in Figure 1 The hybrid power system further includes a first clutch 5 and a second clutch 6, and the second wheel train 3 includes a first planetary gear train 31 and a second planetary gear train 32. The first planetary gear train 31 includes a third sun gear 311, a third planet gear 312, a second planet carrier 313, a ring gear 314 and a transmission gear 315. The third sun gear 311 is engaged with the third planet gear 312, the third planet gear 312 is engaged with the inner ring of the ring gear 314, and the second planet carrier 313 is connected with the third planet gear 312. The third sun gear 311 and the first clutch 5 are connected through a first transmission shaft 31a, the second planet carrier 313 is connected with the transmission gear 315 through a second hollow shaft 31b, the second hollow shaft 31b surrounds the first transmission shaft 31a, and the output shaft 100a is connected with the ring gear 314.

[0062] The second planetary gear train 32 comprises a fourth sun gear 321, a fourth planetary gear 322 and a third planet carrier 323, the fourth sun gear 321 is engaged with the fourth planetary gear 322, the fourth planetary gear 322 is engaged with the inner ring of the ring gear 314, the third planet carrier 323 is connected with the fourth planetary gear 322, and the fourth sun gear 321 is connected with the second clutch 6 through a third hollow shaft 32a, and the third hollow shaft 32a is sleeved with the second hollow shaft 31b.

[0063] The output gear train 4 comprises a first gear 41, a second gear 42 and a third gear 43 connected coaxially, the first gear 41 is engaged with the transmission gear 315, the second gear 42 is engaged with the third planet carrier 323, and the third gear 43 is drivingly connected with the wheel 400, and the second motor 300 is drivingly connected with the third gear 43.

[0064] When the engine 100 works, the power of the engine 100 can be transmitted to the first sun gear 11, the first planetary gear 12, the first planet carrier 13 and the ring gear 314 in turn. The rotation of the ring gear 314 drives the third planetary gear 312 and the fourth planetary gear 322 to rotate. The power of the third planetary gear 312 can be transmitted to the transmission gear 315 and the first gear 41, so as to drive the wheel 400 to rotate. The power of the fourth planetary gear 322 can be transmitted to the third planet carrier 323 and the second gear 42, so as to drive the wheel 400 to rotate.

[0065] Since the third sun gear 311 is connected with the first clutch 5, whether the third sun gear 311 rotates can be controlled by controlling the engagement or disengagement of the first clutch 5. It can be understood that when the first clutch 5 is engaged, the third sun gear 311 is fixed, and at this time the first planetary gear train 31 acts as a reduction gear train, so that the transmission gear 315 can output power.

[0066] Similarly, since the fourth sun gear 321 is connected with the second clutch 6, whether the fourth sun gear 321 rotates can be controlled by controlling the engagement or disengagement of the second clutch 6. It can be understood that when the second clutch 6 is engaged, the fourth sun gear 321 is fixed, and at this time the second planetary gear train 32 acts as a reduction gear train, so that the third planet carrier 323 can output power.

[0067] When the first clutch 5 is engaged, the power of the engine 100 is transmitted to the first gear 41 through the first planetary gear train 31. When the second clutch 6 is engaged, the power of the engine 100 is transmitted to the second gear 42 through the second planetary gear train 32.

[0068] In some examples, the diameter ratio of the third sun gear 311 to the third planetary gears 312 is smaller than the diameter ratio of the fourth sun gear 321 to the fourth planetary gears 322. This allows the first planetary gear train 31 and the second planetary gear train to have different gear ratios, and different gear shifts can be achieved by engaging the first clutch 5 or the second clutch 6.

[0069] In other examples, the diameter ratio of the third sun gear 311 to the third planet gears 312 may be greater than the diameter ratio of the fourth sun gear 321 to the fourth planet gears 322 .

[0070] In some examples, the transmission ratio of the transmission gear 315 to the first gear 41 is smaller than the transmission ratio of the third planetary carrier 323 to the second gear 42. In this way, different gear shifts can be achieved by engaging the first clutch 5 or the second clutch 6.

[0071] In some examples, such as Figure 1 As shown, the hybrid system further includes a third gear train 7, a fourth gear train 8, and a dual clutch 9. The third gear train 7 includes a meshed fourth gear 71 and a fifth gear 72, and the fourth gear train 8 includes a meshed sixth gear 81 and a seventh gear 82. The fourth gear 71 and the sixth gear 81 are coaxially connected to the second motor 300. The gear ratio of the third gear train 7 is different from that of the fourth gear train 8.

[0072] The dual clutch 9 includes a housing 91, a first sub-clutch 92 and a second sub-clutch 93. The first sub-clutch 92 and the second sub-clutch 93 are fixed to the inside of the housing 91. The fifth gear 72 is connected to the first sub-clutch 92 through the fourth hollow shaft 7a. The seventh gear 82 and the second sub-clutch 93 are connected through the second transmission shaft 8a. The fourth hollow shaft 7a surrounds the second transmission shaft 8a. The housing 91 is coaxially connected to the first gear 41.

[0073] When the second motor 300 is operating, its power is transmitted via the fourth gear 71 to the fifth gear 72, and then via the sixth gear 81 to the seventh gear 82. When the first clutch 92 is engaged, the power of the fifth gear 72 is transmitted via the first clutch 92 and the housing 91 to the third gear 43, thereby driving the wheels 400. When the second clutch 93 is engaged, the power of the seventh gear 82 is transmitted via the second clutch 93 and the housing 91 to the third gear 43, thereby driving the wheels 400. Because the gear ratios of the third gear train 7 and the fourth gear train 8 are different, shifting between different gears can be achieved by controlling the engagement and disengagement of the first clutch 92.

[0074] In some examples, the diameter of the third gear 43 is smaller than the diameter of the first gear 41 and the diameter of the second gear 42. In this way, the transmission ratio between the third gear 43 and the wheel 400 can be reduced, which is conducive to achieving deceleration and torque increase of the vehicle.

[0075] The following is an illustrative description of different driving modes of the hybrid system.

[0076] (1) Pure electric drive mode

[0077] In pure electric drive mode, the engine 100 and first motor 200 are deactivated, while the second motor 300 is in operation, thereby driving the third gear 43 and, in turn, the wheels 400. This pure electric drive mode is suitable for vehicle start-up, low-speed driving, and when the vehicle has sufficient battery charge. It not only utilizes the motor's fast response and high torque at low speed to improve power, but also avoids energy loss caused by frequent starts and stops of the engine 100, thereby improving fuel efficiency.

[0078] From the above analysis, it can be seen that the pure electric drive mode has a first gear and a second gear.

[0079] like Figure 2 As shown, in the first gear, the first sub-clutch 92 is engaged, and the power of the fifth gear 72 is transmitted to the third gear 43 through the first sub-clutch 92 and the housing 91, thereby driving the wheel 400 to rotate.

[0080] like Figure 3 As shown, in the second gear, the second sub-clutch 93 is engaged, and the power of the seventh gear 82 is transmitted to the third gear 43 through the second sub-clutch 93 and the housing 91, thereby driving the wheel 400 to rotate.

[0081] In addition, the pure electric driving mode also has a reverse mode and an energy recovery mode.

[0082] In the reverse mode, the second motor 300 rotates in reverse, thereby driving the wheels 400 in reverse. Generally, the vehicle speed required for reverse is relatively low, so the engine 100 does not need to work, which can reduce the energy consumption of the vehicle.

[0083] In energy recovery mode, wheels 400 decelerate, allowing the second motor 300 to convert the vehicle's kinetic energy into electrical energy through negative torque. A portion of the electrical energy generated by the second motor 300 is used by other electrical devices in the vehicle, with the excess energy stored in the battery pack. Energy recovery mode is also known as regenerative braking mode.

[0084] (2) Series drive mode

[0085] In the series driving mode, the engine 100 drives the first motor 200 to generate electricity through the first gear train 1. The first motor 200 and the second motor 300 are electrically connected, and the second motor 300 works. The battery pack and the electricity generated by the first motor 200 are driven to rotate the second motor 300 after the direct current is converted into three-phase alternating current by the inverter / transformer. The series driving mode is suitable for the working condition of low vehicle power and high-speed driving of the vehicle. Among them, the series driving mode can also be called the range extending mode or the driving charging mode.

[0086] Among them, the series driving mode has a third gear position and a fourth gear position.

[0087] In the third gear position, as shown in FIG. 8, the first sub-clutch 92 is engaged, and the power of the fifth gear 72 is transmitted to the third gear 43 through the first sub-clutch 92 and the housing 91, thereby driving the wheel 400 to rotate. Figure 4

[0088] In the fourth gear position, as shown in FIG. 9, the second sub-clutch 93 is engaged, and the power of the seventh gear 82 is transmitted to the third gear 43 through the second sub-clutch 93 and the housing 91, thereby driving the wheel 400 to rotate. Figure 5

[0089] (3) Parallel driving mode

[0090] In the parallel driving mode, the engine 100 works to drive the third gear 43 to rotate through the second gear train 3. The second motor 300 works to drive the third gear 43 to rotate. In this way, the engine 100 and the second motor 300 jointly drive the third gear 43 to rotate, and further drive the wheel 400. At this time, the vehicle has sufficient power, so the parallel driving mode is suitable for the working condition of high-speed driving of the wheel. The vehicle ride comfort is also greatly improved, meeting the user's comfort requirements.

[0091] In the parallel driving mode, the hybrid power system has a fifth gear position to a tenth gear position.

[0092] In the fifth gear position, as shown in FIG. 10, the first clutch 5 and the first sub-clutch 92 are engaged. Part of the power of the engine 100 is transmitted to the first motor 200 through the first gear train 1 to drive the first motor 200 to generate electricity. Among them, the first motor 200 can store electrical energy in the battery pack, or can directly supply electrical energy to the second motor 300. Another part of the power of the engine 100 is transmitted to the first clutch 5 through the first planetary gear train 31, and further transmitted to the third gear 43. The power of the second motor 300 is transmitted to the third gear 43 through the third gear train 7, the first sub-clutch 92, and the housing 91. In this way, the power of the third gear 43 can be further transmitted to the wheel 400, thereby driving the wheel 400 to rotate. Figure 6

[0093] ​​​In the sixth gear, if Figure 7 As shown, the first clutch 5, the first sub-clutch 92, and the brake 2 are all engaged. At this point, the first motor 200 is not rotating. All the power from the engine 100 is transmitted via the first planetary gear train 31 to the first clutch 5, and then to the third gear 43. The power from the second motor 300 is transmitted via the third gear train 7, the first sub-clutch 92, and the housing 91 to the third gear 43. This power from the third gear 43 can then be transmitted to the wheels 400, driving them to rotate.

[0094] In seventh gear, if Figure 8 As shown, the second clutch 6 and the first sub-clutch 92 are both engaged. A portion of the power from the engine 100 is transmitted through the first gear train 1 to the first motor 200, thereby driving the first motor 200 to generate electricity. Another portion of the power from the engine 100 is transmitted through the second planetary gear train 32 and the second gear 42 to the third gear 43. The power from the second motor 300 is transmitted through the third gear train 7, the first sub-clutch 92, and the housing 91 to the third gear 43. This power from the third gear 43 is then further transmitted to the wheels 400, driving them to rotate.

[0095] In the eighth gear, if Figure 9 As shown, the second clutch 6, the first sub-clutch 92, and the brake 2 are all engaged. At this point, the first motor 200 is not rotating, and all the power from the engine 100 is transmitted to the third gear 43 via the second planetary gear train 32 and the second gear 42. The power from the second motor 300 is transmitted to the third gear 43 via the third gear train 7, the first sub-clutch 92, and the housing 91. This power from the third gear 43 can then be further transmitted to the wheels 400, driving them to rotate.

[0096] In the ninth gear, if Figure 10 As shown, the second clutch 6 and the second sub-clutch 93 are both engaged. A portion of the power from the engine 100 is transmitted through the first gear train 1 to the first motor 200, thereby driving the first motor 200 to generate electricity. Another portion of the power from the engine 100 is transmitted through the second planetary gear train 32 and the second gear 42 to the third gear 43. The power from the second motor 300 is transmitted through the fourth gear train 8, the second sub-clutch 93, and the housing 91 to the third gear 43. This power from the third gear 43 is then further transmitted to the wheels 400, driving them to rotate.

[0097] In the ninth gear, if Figure 11As shown, the second clutch 6, the second sub-clutch 93, and the brake 2 are all engaged. At this point, the first motor 200 is not rotating, and all the power from the engine 100 is transmitted to the third gear 43 via the second planetary gear train 32 and the second gear 42. The power from the second motor 300 is transmitted to the third gear 43 via the fourth gear train 8, the second sub-clutch 93, and the housing 91. This power from the third gear 43 can then be further transmitted to the wheels 400, driving them to rotate.

[0098] In some examples, the hybrid system also has an engine-only drive mode, in which the second motor 300 is not operating and the wheels 400 are driven only by the engine 100. In the engine-only drive mode, the first clutch 5 or the second clutch 6 is engaged to achieve switching between different gears.

[0099] In some examples, the hybrid system also has a parking charging mode, in which the first motor 200 does not pass, the first clutch 5 and the second clutch 6 are both disengaged, the engine 100 drives the first motor 200 to generate electricity, and the electricity generated by the first motor 200 can be stored in the battery pack.

[0100] The hybrid power system provided by the embodiment of the present disclosure can provide a variety of different driving modes and a variety of gears, which is conducive to making the engine 100, the first motor 200 and the second motor 300 operate in a high-efficiency area.

[0101] The present disclosure also provides a vehicle, which includes the hybrid power system.

[0102] The present disclosure does not specifically limit the type of vehicle, for example, a sedan, a bus, a truck, a sport utility vehicle (SUV), etc.

[0103] The above descriptions are merely optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A hybrid power system, characterized in that: The hybrid system comprises an engine (100), a first motor (200), a second motor (300), a first gear train (1), a brake (2), a second gear train (3) and an output gear train (4), wherein the output gear train (4) is drivingly connected to a wheel (400); The first gear train (1) comprises a first sun gear (11), a first planet gear (12), a first planet carrier (13), a second sun gear (14), and a second planet gear (15); the first sun gear (11) is meshed with the first planet gear (12); the second sun gear (14) is meshed with the second planet gear (15); the first planet gear (12) and the second planet gear (15) are both connected to the first planet carrier (13); the output shaft (100a) of the engine (100) is connected to the first sun gear (11); the second sun gear (14) is connected to the first motor (200) via a first hollow shaft (16); the first hollow shaft (16) is encircled by the output shaft (100a); and the first hollow shaft (16) is connected to the brake (2); The first planetary carrier (13) is also connected to the second gear train (3), the second gear train (3) is transmission-connected to the output gear train (4), and the second motor (300) is transmission-connected to the output gear train (4).

2. The hybrid power system according to claim 1, characterized in that: The hybrid system further comprises a first clutch (5) and a second clutch (6), and the second gear train (3) comprises a first planetary gear train (31) and a second planetary gear train (32); The first planetary gear train (31) comprises a third sun gear (311), a third planetary gear (312), a second planetary carrier (313), a ring gear (314) and a transmission gear (315); the third sun gear (311) is meshed with the third planetary gear (312); the third planetary gear (312) is meshed with the inner ring of the ring gear (314); the second planetary carrier (313) is connected to the third planetary gear (312); the third sun gear (311) and the first clutch (5) are connected via a first transmission shaft (31a); the second planetary carrier (313) is connected to the transmission gear (315) via a second hollow shaft (31b); the second hollow shaft (31b) surrounds the first transmission shaft (31a); and the output shaft (100a) is connected to the ring gear (314); The second planetary gear train (32) comprises a fourth sun gear (321), a fourth planetary gear (322) and a third planet carrier (323); the fourth sun gear (321) is meshed with the fourth planetary gear (322); the fourth planetary gear (322) is meshed with the inner ring of the ring gear (314); the third planet carrier (323) is connected to the fourth planetary gear (322); the fourth sun gear (321) is connected to the second clutch (6) via a third hollow shaft (32a); the third hollow shaft (32a) is encircled by the second hollow shaft (31b); The output gear train (4) comprises a first gear (41), a second gear (42) and a third gear (43) which are coaxially connected, wherein the first gear (41) is engaged with the transmission gear (315), the second gear (42) is engaged with the third planetary carrier (323), the third gear (43) is transmission-connected to the wheel (400), and the second motor (300) is transmission-connected to the third gear (43).

3. The hybrid power system according to claim 2, characterized in that: The diameter ratio of the third sun gear (311) to the third planet gear (312) is smaller than the diameter ratio of the fourth sun gear (321) to the fourth planet gear (322).

4. The hybrid power system according to claim 3, characterized in that: The transmission ratio between the transmission gear (315) and the first gear (41) is smaller than the transmission ratio between the third planet carrier (323) and the second gear (42).

5. The hybrid power system according to claim 2, characterized in that: The hybrid power system further includes a third gear train (7), a fourth gear train (8) and a dual clutch (9); The third gear train (7) includes a meshed fourth gear (71) and a fifth gear (72), the fourth gear train (8) includes a meshed sixth gear (81) and a seventh gear (82), the fourth gear (71) and the sixth gear (81) are coaxially connected to the second motor (300), and the transmission ratio of the third gear train (7) is different from the transmission ratio of the fourth gear train (8); The dual clutch (9) comprises a housing (91), a first sub-clutch (92) and a second sub-clutch (93), wherein the first sub-clutch (92) and the second sub-clutch (93) are fixed inside the housing (91), the fifth gear (72) is connected to the first sub-clutch (92) via a fourth hollow shaft (7a), the seventh gear (82) and the second sub-clutch (93) are connected via a second transmission shaft (8a), the fourth hollow shaft (7a) surrounds the second transmission shaft (8a), and the housing (91) is coaxially connected to the first gear (41).

6. The hybrid power system according to claim 2, characterized in that: The diameter of the third gear (43) is smaller than the diameter of the first gear (41) and the diameter of the second gear (42).

7. The hybrid power system according to claim 1, characterized in that: The diameter of the first planetary gear (12) is smaller than the diameter of the first sun gear (11) and the diameter of the second planetary gear (15), and the diameter of the second planetary gear (15) is larger than the diameter of the second sun gear (14).

8. The hybrid power system according to claim 2, characterized in that: The hybrid system has a pure electric driving mode; In the pure electric driving mode, the engine (100) and the first motor (200) do not operate, and the second motor (300) operates.

9. The hybrid power system according to claim 2, characterized in that: The hybrid system has a series drive mode; In the series drive mode, the engine (100) drives the first motor (200) to generate electricity through the first gear train (1), the first motor (200) and the second motor (300) are electrically connected, and the second motor (300) is in operation.

10. A vehicle, characterized in that: The vehicle comprises a hybrid powertrain system according to any one of claims 1 to 9.

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