Hybrid systems and vehicles

Abstract

This disclosure provides a hybrid power system and a vehicle, belonging to the field of vehicle technology. The hybrid power system includes a first motor, a second motor, an engine, a first gear, a planetary gear train, a first clutch, a second clutch, a first transmission gear train, a second transmission gear train, a second gear, and an output shaft. The first motor is connected to the output shaft via the first gear, the first transmission gear train, and the second gear. The second motor and the engine are connected to the first and second clutches via the planetary gear train. The first clutch is connected to the output shaft via the first transmission gear train and the second gear, and the second clutch is connected to the output shaft via the second transmission gear train and the second gear. When either the first or second clutch is engaged, the second motor and the engine can drive the output shaft. The power source can be switched via the first and second clutches. Because the transmission ratios of the first and second transmission gear trains are different, different gear shifts can also be achieved.

Description

Technical Field

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

[0002] A hybrid power system is a crucial component of a hybrid vehicle, using both an engine and an electric motor as power sources. This allows the vehicle to operate in both gasoline and electric modes, thus achieving a balance between power and fuel economy.

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

[0004] However, the structure of hybrid power systems in related technologies is relatively simple. With the increase in vehicle types, a single type of hybrid power system cannot be applied to different types of vehicles. Therefore, how to enrich the structure of hybrid power systems is a technical problem that needs to be solved. Summary of the Invention

[0005] This disclosure provides a hybrid power system and a vehicle that can solve the technical problems existing in the related art. The technical solution of the hybrid power system and the vehicle is as follows.

[0006] In a first aspect, this disclosure provides a hybrid power system, the hybrid power system comprising a first motor, a second motor, an engine, a first gear, a planetary gear train, a first clutch, a second clutch, a first transmission gear train, a second transmission gear train, a second gear, and an output shaft;

[0007] The second motor and the engine are connected to the first clutch and the second clutch via the planetary gear system. The first clutch is connected to the input end of the first transmission gear system, and the second clutch is connected to the input end of the second transmission gear system.

[0008] The output ends of the first transmission gear train and the second transmission gear train are coaxially connected to the second gear. The second gear is driven by the output shaft, which is used to connect to a wheel. The transmission ratios of the first transmission gear train and the second transmission gear train are different.

[0009] The first motor is connected to the first gear, and the first gear meshes with the input end of the first transmission gear system.

[0010] In one possible implementation, the planetary gear train includes a sun gear, a planet carrier, planet gears, and a ring gear.

[0011] The sun gear is driven by the second motor, the ring gear is sleeved around the sun gear, the planet gears are located between the sun gear and the ring gear, the input end of the planet carrier is connected to the engine, the output end is rotatably connected to the planet gears, and the ring gear is driven by the first clutch and the second clutch.

[0012] In one possible implementation, the first gear train includes a meshing third gear and a fourth gear, wherein the diameter of the third gear is smaller than the diameter of the fourth gear;

[0013] The second transmission gear train includes a meshing fifth gear and a sixth gear, wherein the diameter of the fifth gear is larger than the diameter of the sixth gear;

[0014] The fourth gear, the sixth gear, and the second gear are coaxially connected.

[0015] In one possible implementation, the hybrid power system has a single-motor drive mode;

[0016] In the single-motor drive mode, the first clutch disengages, the second clutch disengages, and the first motor drives the output shaft to rotate.

[0017] In one possible implementation, the hybrid system has a dual-motor drive mode, which has a first gear and a second gear.

[0018] In the first gear position, the first clutch is engaged, the second clutch is disengaged, and the second motor and the first motor drive the output shaft to rotate;

[0019] In the second gear, the first clutch disengages, the second clutch engages, and the second motor and the first motor drive the output shaft to rotate.

[0020] In one possible implementation, the hybrid power system has a parallel drive mode, which has a third gear and a fourth gear;

[0021] In the third gear, the first clutch is engaged, the second clutch is disengaged, and the first motor, the second motor, and the engine drive the output shaft to rotate.

[0022] In the fourth gear position, the first clutch disengages, the second clutch engages, and the first motor, the second motor, and the engine drive the output shaft to rotate.

[0023] In one possible implementation, the hybrid power system has a series drive mode;

[0024] In the series drive mode, the first clutch disengages, the second clutch disengages, the engine drives the second motor to generate electricity, the second motor supplies power to the first motor, and the first motor drives the output shaft to rotate.

[0025] In one possible implementation, the hybrid power system further includes a first oil pump and a second oil pump;

[0026] The first oil pump is connected to the output shaft via a drive mechanism;

[0027] The second oil pump is drive-connected to the first clutch and the second clutch.

[0028] In one possible implementation, the first oil pump operates when the temperature of the hybrid power system is below a first temperature threshold.

[0029] When the temperature of the hybrid power system exceeds a first temperature threshold, the first oil pump and the second oil pump operate.

[0030] In a second aspect, this disclosure provides a vehicle that includes a hybrid power system as described in any of the first aspects.

[0031] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0032] This disclosure provides a hybrid power system in which a first motor is driven by an output shaft via a first gear, a first transmission gear train, and a second gear. A second motor and an engine are driven by a first clutch and a second clutch via a planetary gear train. The first clutch is driven by the output shaft via the first transmission gear train and the second gear, and the second clutch is driven by the output shaft via the second transmission gear train and the second gear. When either the first or second clutch is engaged, power from the second motor and the engine can be transmitted to the output shaft, thereby driving the wheels. When the first and second clutches are disengaged, power from the second motor and the engine cannot be transmitted to the output shaft. Therefore, the power source of the hybrid power system can be switched by engaging or disengaging the first and second clutches. Furthermore, since the transmission ratios of the first and second transmission gear trains are different, different gear shifting can also be achieved.

[0033] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of a hybrid power system shown in an embodiment of this disclosure;

[0036] Figure 2 This is a schematic diagram of power transmission in a single-motor drive mode, as shown in an embodiment of this disclosure;

[0037] Figure 3 This is a schematic diagram of power transmission in a dual-motor drive mode, as shown in an embodiment of this disclosure;

[0038] Figure 4 This is a schematic diagram of power transmission in a dual-motor drive mode, as shown in an embodiment of this disclosure;

[0039] Figure 5 This is a schematic diagram of power transmission in a parallel drive mode as shown in an embodiment of the present disclosure;

[0040] Figure 6 This is a schematic diagram of power transmission in a parallel drive mode as shown in an embodiment of the present disclosure;

[0041] Figure 7 This is a schematic diagram of power transmission in a series drive mode as shown in an embodiment of the present disclosure;

[0042] Figure 8 This is a schematic diagram of power transmission in a parking power generation mode, as shown in an embodiment of this disclosure.

[0043] Legend:

[0044] 1. First gear;

[0045] 2. Planetary gear train; 21. Sun gear; 22. Planet carrier; 23. Planet gears; 24. Ring gear.

[0046] 3. First clutch;

[0047] 4. Second clutch;

[0048] 5. First transmission gear train; 51. Third gear; 52. Fourth gear;

[0049] 6. Second transmission gear train; 61. Fifth gear; 62. Sixth gear;

[0050] 7. Second gear;

[0051] 8. Output shaft;

[0052] 9. One-way clutch; 91. Inner ring structure; 92. Outer ring structure;

[0053] 101. First oil pump;

[0054] 102. Second oil pump;

[0055] 100. First motor;

[0056] 200. Second motor;

[0057] 300. Engine.

[0058] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0060] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0061] This disclosure provides a hybrid power system, such as... Figure 1As shown, the hybrid power system includes a first motor 100, a second motor 200, an engine 300, a first gear 1, a planetary gear train 2, a first clutch 3, a second clutch 4, a first transmission gear train 5, a second transmission gear train 6, a second gear 7, and an output shaft 8. The second motor 200 and the engine 300 are connected to the first clutch 3 and the second clutch 4 via the planetary gear train 2. The first clutch 3 is connected to the input end of the first transmission gear train 5, and the second clutch 4 is connected to the input end of the second transmission gear train 6. The output ends of the first transmission gear train 5 and the second transmission gear train 6 are coaxially connected to the second gear 7, which is connected to the output shaft 8. The output shaft 8 is used to connect to a wheel 400. The transmission ratios of the first transmission gear train 5 and the second transmission gear train 6 are different. The first motor 100 is connected to the first gear 1, and the first gear 1 meshes with the input end of the first transmission gear train 5.

[0062] The hybrid power system also includes a battery pack, which is electrically connected to the first motor 100 and the second motor 200. When the first motor 100 and the second motor 200 need to operate, the battery pack supplies power to them. When the first motor 100 and the second motor 200 rotate under the drive of an external force, they then charge the battery pack.

[0063] The technical solution provided in this disclosure involves a first motor 100 connected to an output shaft 8 via a first gear 1, a first transmission gear train 5, and a second gear 7, thereby driving wheels 400. A second motor 200 and an engine 300 are connected to a first clutch 3 and a second clutch 4 via a planetary gear train 2. The first clutch 3 is connected to the output shaft 8 via the first transmission gear train 5 and the second gear 7, and the second clutch 4 is connected to the output shaft 8 via the second transmission gear train 6 and the second gear 7. When the first clutch 3 or the second clutch 4 is engaged, the power of the second motor 200 and the engine 300 can be transmitted to the output shaft 8, thereby driving the wheels. When the first clutch 3 and the second clutch 4 are disengaged, the power of the second motor 200 and the engine 300 cannot be transmitted to the output shaft 8. Therefore, the power source of the hybrid power system can be switched by engaging or disengaging the first clutch 3 and the second clutch 4. Furthermore, since the transmission ratios of the first transmission gear train 5 and the second transmission gear train 6 are different, switching between different gears can also be achieved.

[0064] In some examples, such as Figure 1As shown, the planetary gear train 2 includes a sun gear 21, a planet carrier 22, planet gears 23, and a ring gear 24. The sun gear 21 is connected to the second motor 200 for transmission. The ring gear 24 is wrapped around the sun gear 21. The planet gears 23 are located between the sun gear 21 and the ring gear 24. The input end of the planet carrier 22 is connected to the engine 300, and the output end is rotatably connected to the planet gears 23. The ring gear 24 is connected to the first clutch 3 and the second clutch 4 for transmission.

[0065] The power from engine 300 is transmitted to ring gear 24 via planetary carrier 22 and planetary gears 23. The power from second motor 200 is transmitted to ring gear 24 via sun gear 21 and planetary gears 23. The power from ring gear 24 is then transmitted to either first clutch 3 or second clutch 4. The planetary gear system 2 can distribute the power between second motor 200 and engine 300, thereby achieving stepless speed regulation in the hybrid power system. Furthermore, the planetary gear system 2 can decouple engine 300 from wheels 400, allowing engine 300 to continuously operate in its high-efficiency range, thus reducing engine 300's energy consumption.

[0066] In some examples, such as Figure 1 As shown, the first transmission gear train 5 includes a meshing third gear 51 and a fourth gear 52, with the diameter of the third gear 51 being smaller than the diameter of the fourth gear 52. Therefore, the first transmission gear train 5 can reduce the speed output by the first clutch 3. The second transmission gear train 6 includes a meshing fifth gear 61 and a sixth gear 62, with the diameter of the fifth gear 61 being larger than the diameter of the sixth gear 62. Therefore, the second transmission gear train 6 can accelerate the speed output by the second clutch 4. Furthermore, the fourth gear 52, the sixth gear 62, and the second gear 7 are coaxially connected.

[0067] In some examples, such as Figure 1 As shown, the diameter of the second gear 7 is smaller than the diameter of the fourth gear 52 and the diameter of the sixth gear 62. Thus, the second gear 7 can achieve speed reduction and torque amplification between the first transmission gear train 5 and the output shaft 8, and also between the second transmission gear train 6 and the output shaft 8. This results in the output shaft 8 exerting a greater driving force on the wheel 400.

[0068] The following provides an exemplary description of how different drive modes of a hybrid power system are implemented.

[0069] (1) Single motor drive mode

[0070] In some examples, such as Figure 2As shown, the hybrid system has a single-motor drive mode. In single-motor drive mode, the first clutch 3 disengages, the second clutch 4 disengages, and the first motor 100 drives the output shaft 8 to rotate. At this time, the second motor 200 and the engine 300 are not working, and the first motor 100 is working. The first motor 100 drives the output shaft 8 sequentially through the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thereby enabling the output shaft 8 to drive the wheels 400.

[0071] The single-motor drive mode is suitable for vehicle start-up, low-speed driving, and when the vehicle has sufficient battery power. It can avoid the energy loss caused by frequent engine start-stop, thereby improving fuel efficiency.

[0072] In some examples, the hybrid system has a reversing mode in single-motor drive mode. In the reversing mode, the first motor 100 reverses, causing the output shaft 8 to drive the wheels 400 in reverse, thus completing the reversing operation. Because the vehicle speed is slow and the reversing time is short in the reversing mode, the second motor 200 and the engine 300 do not need to participate in the drive, which reduces the vehicle's energy consumption.

[0073] In some examples, the hybrid system features an energy recovery mode in single-motor drive mode. During energy recovery, wheels 400 decelerate and sequentially drive the first motor 100 via output shaft 8, second gear 7, fourth gear 52, third gear 51, and first gear 1. This allows the first motor 100 to convert the vehicle's kinetic energy into electrical energy through negative torque. A portion of the electrical energy generated by the first motor 100 can be used by other electrical devices in the vehicle, while excess energy is stored in the battery pack.

[0074] (2) Dual motor drive mode

[0075] In some examples, the hybrid system has a dual-motor drive mode, where the first motor 100 and the second motor 200 are operating, while the engine 300 is not operating. The dual-motor drive mode has a first gear and a second gear.

[0076] In first gear, such as Figure 3 As shown, the first clutch 3 is engaged, the second clutch 4 is disengaged, and the second motor 200 and the first motor 100 drive the output shaft 8 to rotate.

[0077] The second motor 200 drives the sun gear 21 to rotate. Since the engine 300 is not working, the planet carrier 22 is fixed. The sun gear 21 then drives the planet gears 23 to rotate, which in turn drives the ring gear 24 to rotate. The ring gear 24 drives the third gear 51 via the first clutch 3. The third gear 51 drives the output shaft 8 via the fourth gear 52 and the second gear 7, thus enabling the output shaft 8 to drive the wheel 400. Simultaneously, the first motor 100 drives the output shaft 8 sequentially via the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thereby enabling the output shaft 8 to drive the wheel 400. The power output from the first motor 100 and the second motor 200 is coupled at the third gear 51, jointly driving the output shaft 8, thereby enhancing the power performance of the hybrid system.

[0078] In second gear, such as Figure 4 As shown, the first clutch 3 disengages, the second clutch 4 engages, and the second motor 200 and the first motor 100 drive the output shaft 8 to rotate. The second motor 200 drives the sun gear 21 to rotate. Since the engine 300 is not working, the planet carrier 22 is fixed, so the sun gear 21 drives the planet gears 23 to rotate, and the planet gears 23 drive the ring gear 24 to rotate. The ring gear 24 drives the fifth gear 61 through the second clutch 4, and the fifth gear 61 drives the output shaft 8 through the sixth gear 62 and the second gear 7, thereby causing the output shaft 8 to drive the wheel 400. At the same time, the first motor 100 drives the output shaft 8 sequentially through the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thereby causing the output shaft 8 to drive the wheel 400. The power output by the first motor 100 and the second motor 200 is coupled at the second gear 7, jointly driving the output shaft 8, thereby enhancing the power performance of the hybrid power system.

[0079] Since the transmission ratio of the second gear train 6 is greater than that of the first gear train 5, under the same power input, the power output of the second gear is greater than that of the first gear, so the second gear is more suitable for high-speed driving.

[0080] In some examples, the hybrid system has an energy recovery mode in the first and second gears.

[0081] In the first gear energy recovery mode, wheel 400 decelerates and drives first motor 100 sequentially through output shaft 8, second gear 7, fourth gear 52, third gear 51 and first gear 1. At the same time, wheel 400 drives second motor 200 sequentially through output shaft 8, second gear 7, fourth gear 52, third gear 51, first clutch 3 and planetary gear system 2.

[0082] In the second gear energy recovery mode, wheel 400 decelerates and drives the first motor 100 sequentially through output shaft 8, second gear 7, fourth gear 52, third gear 51 and first gear 1. At the same time, wheel 400 drives the second motor 200 sequentially through output shaft 8, second gear 7, sixth gear 62, fifth gear 61, second clutch 4 and planetary gear system 2.

[0083] In this way, the first motor 100 and the second motor 200 can convert the vehicle's kinetic energy into electrical energy through negative torque. The electrical energy generated by the first motor 100 and the second motor 200 can be partially supplied to other electrical devices in the vehicle, while the excess electrical energy is stored in the battery pack.

[0084] (3) Parallel drive mode

[0085] In some examples, the hybrid system has a parallel drive mode with a third and fourth gear. In parallel drive mode, the first motor 100, the second motor 200, and the engine 300 jointly drive the output shaft 8 to rotate.

[0086] In third gear, such as Figure 5 As shown, the first clutch 3 is engaged, and the second clutch 4 is disengaged, driving the output shaft 8 to rotate via the first motor 100, the second motor 200, and the engine 300. The engine 300 sequentially drives the planetary carrier 21, planetary gears 23, and ring gear 24 to rotate, while the second motor 200 sequentially drives the sun gear 21, planetary gears 23, and ring gear 24 to rotate. The power from the second motor 200 and the engine 300 is coupled at the ring gear 24, which drives the third gear 51 via the first clutch 3. The third gear 51 then drives the output shaft 8 via the fourth gear 52 and the second gear 7, thereby enabling the output shaft 8 to drive the wheel 400. Simultaneously, the first motor 100 sequentially drives the output shaft 8 via the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thus enabling the output shaft 8 to drive the wheel 400. The power output from the first motor 100, the second motor 200, and the engine 300 is coupled at the third gear 51, jointly driving the output shaft 8, thereby enhancing the power performance of the hybrid system.

[0087] In fourth gear, such as Figure 6As shown, the first clutch 3 is disengaged, and the second clutch 4 is engaged, driving the output shaft 8 to rotate via the first motor 100, the second motor 200, and the engine 300. The engine 300 sequentially drives the planetary carrier 21, planetary gears 23, and ring gear 24 to rotate, while the second motor 200 sequentially drives the sun gear 21, planetary gears 23, and ring gear 24 to rotate. The power from the second motor 200 and the engine 300 is coupled at the ring gear 24, which drives the fifth gear 61 via the second clutch 4. The fifth gear 61 then drives the output shaft 8 via the sixth gear 62 and the second gear 7, thereby enabling the output shaft 8 to drive the wheel 400. Simultaneously, the first motor 100 sequentially drives the output shaft 8 via the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thus enabling the output shaft 8 to drive the wheel 400. The power output from the first motor 100, the second motor 200, and the engine 300 is coupled at the second gear 7, jointly driving the output shaft 8, thereby enhancing the power performance of the hybrid system.

[0088] Parallel drive mode is suitable for vehicles operating at medium and high speeds, providing sufficient power and significantly improving overall vehicle smoothness to meet user comfort requirements. In parallel drive mode, the planetary gear train 2 decouples the engine 300 and the second electric motor 200, allowing the engine 300 to operate continuously in its high-efficiency range. Furthermore, the planetary gear train 2 can distribute the power transmitted from the second electric motor 200 and the engine 300, thereby achieving continuously variable transmission (CVT).

[0089] (4) Series drive mode

[0090] In some examples, the hybrid system has a series drive mode. For example... Figure 7 As shown, in series drive mode, the first clutch 3 and the second clutch 4 are disengaged. The engine 300 drives the second motor 200 to generate electricity, which in turn supplies power to the first motor 100. The first motor 100 then drives the output shaft 8 to rotate. Since both the first clutch 3 and the second clutch 4 are disengaged, the power from the engine 300 is not transmitted to the output shaft 8, but only to the second motor 200. In this state, the engine 300 and the second motor 200 act as generators. The engine 300 drives the second motor 200 to generate electrical energy, which in turn drives the first motor 100 to rotate. This causes the first motor 100 to drive the output shaft 8 sequentially through the first gear 1, the third gear 51, the fourth gear 52, and the second gear 7, thereby enabling the output shaft 8 to drive the wheel 400. Excess electrical energy generated by the second motor 200 can be stored in the battery pack.

[0091] The series drive mode is suitable for situations where the vehicle's battery pack has a low charge level.

[0092] (5) Parking power generation mode

[0093] In parking generator mode, such as Figure 8 As shown, the engine 300 needs to drive the second motor 200 to generate electricity under load, therefore the first clutch 3 or the second clutch 4 is engaged. Since the vehicle is in a braking state at this time, even if the first clutch 3 or the second clutch 4 is engaged, the engine 300 will not drive the wheels 400 to rotate. The first motor 100 is not working, and the engine 300 drives the second motor 200 to rotate through the planetary carrier 22 and the sun gear 21, thereby enabling the second motor 200 to generate electricity and store the electricity in the battery pack.

[0094] In some examples, such as Figure 1 As shown, the hybrid power system also includes a first oil pump 101 and a second oil pump 102. The first oil pump 101 is drivenly connected to the output shaft 8, and the second oil pump 102 is drivenly connected to the first clutch 3 and the second clutch 4. When the first oil pump 101 and the second oil pump 102 are working, they can deliver engine oil to the components of the hybrid power system, thereby achieving cooling of the hybrid power system.

[0095] In some examples, when the temperature of the hybrid power system is below a first temperature threshold, the first oil pump 101 operates. When the temperature of the hybrid power system is above the first temperature threshold, both the first oil pump 101 and the second oil pump 102 operate to enhance the cooling efficiency of the hybrid power system.

[0096] In some examples, such as Figure 1 As shown, the hybrid system also includes a one-way clutch 9, which is connected to the output shaft of the engine 300. The one-way clutch includes an inner ring structure 91 and an outer ring structure 92. The inner ring structure 91 surrounds the output shaft of the engine 300, and the outer ring structure 92 is fixed to the housing of the hybrid system. The one-way clutch 9 can only transmit power in one direction (clockwise or counterclockwise), meaning the inner ring structure 91 can only rotate in one direction, causing the engine 300 to rotate only in a certain direction. When the output shaft of the engine 300 tends to rotate in another direction, the inner ring structure 91 locks under the action of the outer ring structure 92, thereby preventing the engine 300 from rotating. Thus, when the engine 300 is running, the one-way clutch 9 does not affect the rotation of the engine 300. When the engine 300 is not running, if the vehicle is reversing, the one-way clutch 9 can prevent the engine 300 from reversing, thereby preventing abnormal combustion in the engine 300 and damage to the engine 300.

[0097] This disclosure also provides a vehicle that includes the aforementioned hybrid power system.

[0098] This disclosure does not specifically limit the type of vehicle, such as cars, buses, trucks, sport utility vehicles (SUVs), etc.

[0099] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A hybrid power system, characterized in that, The hybrid power system includes a first motor (100), a second motor (200), an engine (300), a first gear (1), a planetary gear train (2), a first clutch (3), a second clutch (4), a first transmission gear train (5), a second transmission gear train (6), a second gear (7), and an output shaft (8); The second motor (200) and the engine (300) are connected to the first clutch (3) and the second clutch (4) via the planetary gear train (2). The first clutch (3) is connected to the input end of the first transmission gear train (5), and the second clutch (4) is connected to the input end of the second transmission gear train (6). The output ends of the first transmission gear train (5) and the second transmission gear train (6) are coaxially connected to the second gear (7). The second gear (7) is connected to the output shaft (8) for transmission. The output shaft (8) is used to connect to the wheel (400). The transmission ratios of the first transmission gear train (5) and the second transmission gear train (6) are different. The first motor (100) is connected to the first gear (1) in a transmission connection, and the first gear (1) meshes with the input end of the first transmission gear train (5); The hybrid power system has a single-motor drive mode, a dual-motor drive mode, a parallel drive mode, and a series drive mode. In the single-motor drive mode, the first clutch (3) disengages, the second clutch (4) disengages, and the first motor (100) drives the output shaft (8) to rotate; The dual-motor drive mode has a first gear and a second gear. In the first gear, the first clutch (3) is engaged and the second clutch (4) is disengaged. The second motor (200) and the first motor (100) drive the output shaft (8) to rotate. In the second gear, the first clutch (3) is disengaged and the second clutch (4) is engaged. The second motor (200) and the first motor (100) drive the output shaft (8) to rotate. The parallel drive mode has a third gear and a fourth gear. In the third gear, the first clutch (3) is engaged, the second clutch (4) is disengaged, and the first motor (100), the second motor (200), and the engine (300) drive the output shaft (8) to rotate. In the fourth gear, the first clutch (3) is disengaged, the second clutch (4) is engaged, and the first motor (100), the second motor (200), and the engine (300) drive the output shaft (8) to rotate. In the series drive mode, the first clutch (3) is disengaged, the second clutch (4) is disengaged, the engine (300) drives the second motor (200) to generate electricity, the second motor (200) supplies power to the first motor (100), and the first motor (100) drives the output shaft (8) to rotate.

2. The hybrid power system according to claim 1, characterized in that, The planetary gear train (2) includes a sun gear (21), a planet carrier (22), planet gears (23), and a ring gear (24); The sun gear (21) is connected to the second motor (200) for transmission. The ring gear (24) is wrapped around the sun gear (21). The planet gear (23) is located between the sun gear (21) and the ring gear (24). The input end of the planet carrier (22) is connected to the engine (300), and the output end is rotatably connected to the planet gear (23). The ring gear (24) is connected to the first clutch (3) and the second clutch (4) for transmission.

3. The hybrid power system according to claim 1, characterized in that, The first transmission gear train (5) includes a meshing third gear (51) and a fourth gear (52), wherein the diameter of the third gear (51) is smaller than the diameter of the fourth gear (52); The second transmission gear train (6) includes a meshing fifth gear (61) and a sixth gear (62), wherein the diameter of the fifth gear (61) is larger than the diameter of the sixth gear (62); The fourth gear (52), the sixth gear (62), and the second gear (7) are coaxially connected.

4. The hybrid power system according to any one of claims 1-3, characterized in that, The hybrid power system also includes a first oil pump (101) and a second oil pump (102); The first oil pump (101) is connected to the output shaft (8) in a transmission connection; The second oil pump (102) is connected to the first clutch (3) and the second clutch (4) in a transmission connection.

5. The hybrid power system according to claim 4, characterized in that, When the temperature of the hybrid power system is lower than the first temperature threshold, the first oil pump (101) operates. When the temperature of the hybrid power system is greater than the first temperature threshold, the first oil pump (101) and the second oil pump (102) operate.

6. A vehicle, characterized in that, The vehicle includes a hybrid power system as described in any one of claims 1-5.

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