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 dual planetary gear set, a first clutch, a second clutch, a third clutch, a first reduction mechanism, a second reduction mechanism, and an output shaft. The first motor is driven to the output shaft via the first and second reduction mechanisms. The second motor is driven to the output shaft via the dual planetary gear set and the second reduction mechanism. The engine is connected to the first and second clutches, which are also driven to the output shaft via the dual planetary gear set and the second reduction mechanism. When either the first or second clutch is engaged, the engine's power is transmitted to the output shaft. Therefore, the power source can be switched via the first and second clutches. Furthermore, by engaging or disengaging the first, second, and third clutches, the transmission ratio of the dual planetary gear set can be changed, thereby altering the gears of the hybrid power system.

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, it is necessary to provide a new type of hybrid power system to enrich the structure of hybrid power systems. 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 dual planetary gear set, a first clutch, a second clutch, a third clutch, a first reduction mechanism, a second reduction mechanism, and an output shaft;

[0007] The dual planetary gear set includes a first sun gear, a first planet gear, a first planet carrier, a first ring gear, a second sun gear, a second planet gear, and a second planet carrier. The first sun gear and the second sun gear are connected to the output shaft of the second motor. The first planet gear meshes with the first sun gear, and the second planet gear meshes with the second sun gear. The first planet carrier is rotatably connected to the first planet gear. One end of the first planet carrier meshes with the input end of the second reduction mechanism, and the other end is wrapped around the second sun gear and meshes with the second planet gear. One end of the first ring gear is wrapped around the first sun gear and meshes with the first planet gear, and the other end is connected to the first clutch. One end of the second planet carrier is rotatably connected to the second planet gear, and the other end is connected to the second clutch.

[0008] The third clutch is fixed to the housing of the hybrid power system and connected to the second motor;

[0009] The first motor is sequentially connected to the first reduction mechanism and the second reduction mechanism, and the second reduction mechanism is sequentially connected to the output shaft, which is used to connect to the wheel.

[0010] The engine is connected in transmission to the first clutch and the second clutch.

[0011] In one possible implementation, the first reduction mechanism includes a third sun gear, a third planet gear, a third planet carrier, and a third ring gear;

[0012] The third sun gear is connected to the first motor, the third ring gear is fixed to the housing of the hybrid power system and the third ring gear is wrapped around the third sun gear, the third planet gear is located between the third sun gear and the third ring gear, the input end of the third planet carrier is rotatably connected to the third planet gear, and the output end is connected to the second reduction mechanism.

[0013] In one possible implementation, the first motor includes a stator, a rotor, and a motor output shaft;

[0014] The stator ring is fitted around the rotor, the rotor is connected to the motor output shaft, the sidewall of the rotor is fitted around the third gear ring, and the motor output shaft is connected to the third sun gear.

[0015] In one possible implementation, the first clutch includes a housing, a first clutch disc, and a first pressure plate. The housing is connected to the output shaft of the engine. The first clutch disc is annular and fixed to the inner side of the housing. The first pressure plate is connected to the first gear ring. When the first clutch is engaged, the first pressure plate is connected to the first clutch disc.

[0016] The second clutch includes a second clutch disc and a second pressure plate. The second clutch disc is annular and fixed to the inner side of the housing. The second pressure plate is connected to the second planetary carrier. When the second clutch is engaged, the second pressure plate is connected to the second clutch disc.

[0017] In one possible implementation, the second reduction mechanism includes a first gear and a second gear;

[0018] The first gear and the second gear are coaxially connected. The first gear meshes with the first planetary carrier, and the second gear is driven by the output shaft. The diameter of the second gear is smaller than that of the first gear.

[0019] In one possible implementation, the diameter of the first gear is smaller than the outer diameter of the first planetary carrier.

[0020] In one possible implementation, the hybrid power system includes a single-motor drive mode;

[0021] In the single-motor drive mode, the first clutch, the second clutch, and the third clutch are all disengaged, and the first motor drives the output shaft through the first reduction mechanism and the second reduction mechanism.

[0022] In one possible implementation, the hybrid power system has a first hybrid power mode, the first hybrid power mode having a first gear and a second gear;

[0023] In the first gear, the second clutch is engaged, and both the first clutch and the third clutch are disengaged. The first motor drives the output shaft through the first reduction mechanism and the second reduction mechanism. The second motor drives the output shaft through the second sun gear, the second planetary gear, the first planetary carrier, and the second reduction mechanism. The engine drives the output shaft through the second clutch, the second clutch, the second planetary carrier, the second planetary gear, the first planetary carrier, and the second reduction mechanism.

[0024] In the second gear, the first clutch is engaged, and the second and third clutches are disengaged. The first motor drives the output shaft through the first and second reduction mechanisms. The second motor drives the output shaft through the second sun gear, the second planet gear, the first planet carrier, and the second reduction mechanism. The engine drives the output shaft through the first clutch, the first ring gear, the first planet gear, the first planet carrier, and the second reduction mechanism.

[0025] In one possible implementation, the hybrid power system has a second hybrid power mode, which has a third gear, a fourth gear, and a fifth gear.

[0026] In the third gear, both the first clutch and the third clutch are engaged, the second clutch is disengaged, the first motor drives the output shaft through the first reduction mechanism and the second reduction mechanism, and the engine drives the output shaft through the first clutch, the first ring gear, the first planetary gear, the first planetary carrier and the second reduction mechanism.

[0027] In the fourth gear position, both the first clutch and the second clutch are engaged, the third clutch is disengaged, the first motor drives the output shaft through the first reduction mechanism and the second reduction mechanism, and the engine drives the output shaft through the first clutch, the first ring gear, the first planetary gear, the first planetary carrier and the second reduction mechanism, and drives the second motor through the second clutch, the second planetary carrier, the second planetary gear and the second sun gear;

[0028] In the fifth gear, both the second clutch and the third clutch are engaged, the first motor drives the output shaft through the first reduction mechanism and the second reduction mechanism, and the engine drives the output shaft through the second clutch, the second planetary carrier, the second planetary gear, the first planetary carrier and the second reduction mechanism.

[0029] In a second aspect, this disclosure provides a vehicle that includes a hybrid power system as described in any of the first aspects.

[0030] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0031] This disclosure provides a hybrid power system. A first motor is connected to an output shaft via a first reduction gear and a second reduction gear, thereby driving the wheels. A second motor is connected to the output shaft via a first planetary carrier and a second reduction gear of a dual planetary gear set, thereby driving the wheels. An engine is connected to a first clutch and a second clutch. The first clutch is connected to the output shaft sequentially via a first ring gear, a first planetary gear, a first planetary carrier, and a second reduction gear. The second clutch is connected to the output shaft sequentially via a second planetary carrier, a second planetary gear, a first planetary carrier, and a second reduction gear. When either the first or second clutch is engaged, the engine's power can be transmitted to the output shaft, thereby driving the wheels. When either the first or second clutch is disengaged, the engine's power cannot be transmitted to the output shaft. Therefore, the power source of the hybrid power system can be switched by disengaging or engaging the first and second clutches.

[0032] Furthermore, by engaging or disengaging the first, second, and third clutches, the fixed, driving, and driven components in the dual planetary gear set can be altered, thereby changing the gear ratio of the dual planetary gear set and thus changing the gear position of the hybrid power system. Compared with related technologies, the technical solution provided by the embodiments of this disclosure can enrich the structural forms of hybrid power systems.

[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 of a hybrid power system according to an embodiment of this disclosure;

[0037] Figure 3 This is a schematic diagram of the power transmission in the first gear of a hybrid power system according to an embodiment of this disclosure;

[0038] Figure 4 This is a schematic diagram of the power transmission in the second gear of a hybrid power system according to an embodiment of this disclosure;

[0039] Figure 5 This is a schematic diagram of the power transmission of the third gear in a hybrid power system according to an embodiment of this disclosure;

[0040] Figure 6 This is a schematic diagram of the power transmission of the fourth gear in a hybrid power system according to an embodiment of this disclosure;

[0041] Figure 7 This is a schematic diagram of the power transmission of the fifth gear in a hybrid power system according to an embodiment of this disclosure.

[0042] Legend:

[0043] 1. Double planetary gear set; 11. First sun gear; 12. First planet gear; 13. First planet carrier; 14. First gear ring; 15. Second sun gear; 16. Second planet gear; 17. Second planet carrier;

[0044] 2. First clutch;

[0045] 3. Second clutch;

[0046] 4. Third clutch;

[0047] 5. First reduction gear; 51. Third sun gear; 52. Third planet gear; 53. Third planet carrier; 54. Third gear ring.

[0048] 6. Second reduction mechanism; 61. First gear; 62. Second gear;

[0049] 7. Output shaft;

[0050] 100. First motor; 101. Stator; 102. Rotor; 103. Motor output shaft;

[0051] 200. Second motor;

[0052] 300. Engine;

[0053] 400. Wheel.

[0054] 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

[0055] 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.

[0056] 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.

[0057] 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 dual planetary gear set 1, a first clutch 2, a second clutch 3, a third clutch 4, a first reduction mechanism 5, a second reduction mechanism 6, and an output shaft 7. The dual planetary gear set 1 includes a first sun gear 11, a first planet gear 12, a first planet carrier 13, a first ring gear 14, a second sun gear 15, a second planet gear 16, and a second planet carrier 17. The first sun gear 11 and the second sun gear 15 are connected to the output shaft of the second motor 200. The first planet gear 12 meshes with the first sun gear 11, and the second planet gear 16 meshes with the second sun gear 15. The first planet carrier 13 is rotatably connected to the first planet gear 12. One end of the first planet carrier 13 meshes with the input end of the second reduction mechanism 6, and the other end is fitted around the second sun gear 15 and meshes with the second planet gear 16. One end of the first ring gear 14 is fitted around the first sun gear 11 and meshes with the first planet gear 12, and the other end is connected to the first clutch 2. One end of the second planet carrier 17 is rotatably connected to the second planet gear 16, and the other end is connected to the second clutch 3. The third clutch 4 is fixed to the housing of the hybrid power system and connected to the second motor 200. The first motor 100 is sequentially connected to the first reduction mechanism 5 and the second reduction mechanism 6. The second reduction mechanism 6 is connected to the output shaft 7, which is used to connect the wheel 400. The engine 300 is connected to the first clutch 2 and the second clutch 3.

[0058] The second motor 200, the first sun gear 11, and the second sun gear 15 can be coaxially connected through a hollow shaft, and the hollow shaft is wrapped around the output shaft of the engine 300.

[0059] One end of the first planetary carrier 13 can be regarded as an external gear ring and the other end as an internal gear ring. One end of the external gear ring meshes with the input end of the second reduction mechanism 6, and one end of the internal gear ring meshes with the second planetary gear 16. The middle part of the first planetary carrier 13 is rotatably connected to the first planetary gear 12.

[0060] The hybrid power system also includes a battery pack, an inverter, and a transformer. The inverter and transformer convert the DC power output from the battery pack into three-phase AC power, which can drive the first motor 100 or the second motor 200 to rotate.

[0061] The first reduction mechanism 5 and the second reduction mechanism 6 are used to reduce speed and increase torque between the first motor 100 and the output shaft 7, thereby enabling the first motor 100 to apply a greater driving force to the output shaft 7, thus driving the wheels through the output shaft 7. The second reduction mechanism 6 is also used to reduce speed and increase torque between the double planetary gear set 1 and the output shaft 7.

[0062] The technical solution provided in this disclosure embodiment includes a first motor 100 connected to an output shaft 7 via a first reduction mechanism 5 and a second reduction mechanism 6, thereby driving wheels 400. A second motor 200 is also connected to the output shaft 7 via a first planetary carrier 13 and a second reduction mechanism 6 of a double planetary gear set 1, further driving wheels 400. An engine 300 is connected to a first clutch 2 and a second clutch 3. The first clutch 2 is sequentially connected to the output shaft 7 via a first ring gear 14, a first planetary gear 12, a first planetary carrier 13, and a second reduction mechanism 6. The second clutch 3 is sequentially connected to the output shaft 7 via a second planetary carrier 17, a second planetary gear 16, a first planetary carrier 13, and a second reduction mechanism 6. When the first clutch 2 or the second clutch 3 is engaged, the power of the engine 300 can be transmitted to the output shaft 7, thereby driving wheels 400. When the first clutch 2 or the second clutch 3 is disengaged, the power of the engine 300 cannot be transmitted to the output shaft 7. Therefore, the switching of the power source of the hybrid power system can be achieved by disengaging or engaging the first clutch 2 and the second clutch 3.

[0063] Furthermore, by engaging or disengaging the first clutch 2, the second clutch 3, and the third clutch 4, the fixed, driving, and driven components in the dual planetary gear set 1 can be altered, thereby changing the transmission ratio of the dual planetary gear set 1 and thus changing the gears of the hybrid power system. Compared with related technologies, the technical solution provided by the embodiments of this disclosure can enrich the structural forms of hybrid power systems.

[0064] In some examples, such as Figure 1 As shown, the first reduction mechanism 5 includes a third sun gear 51, a third planetary gear 52, a third planetary carrier 53, and a third ring gear 54. The third sun gear 51 is connected to the first motor 100, the third ring gear 54 is fixed to the housing of the hybrid power system, and the third ring gear 54 encircles the third sun gear 51. The third planetary gear 52 is located between the third sun gear 51 and the third ring gear 54. The input end of the third planetary carrier 53 is rotatably connected to the third planetary gear 52, and the output end is connected to the second reduction mechanism 6. The first reduction mechanism 5 can also be called a planetary gear reduction mechanism. Planetary gear reduction mechanisms have a compact structure and advantages such as smooth transmission and low noise.

[0065] When the first motor 100 is working, it drives the third sun gear 51 to rotate. Since the third ring gear 54 is fixed, the third planetary gear 52 revolves around the third sun gear 51 under its drive, thereby causing the third planetary carrier 53 to rotate, thus achieving speed reduction and torque increase between the third sun gear 51 and the third planetary carrier 53. Then, the third planetary carrier 53 drives the output shaft 7 to rotate through the second reduction mechanism 6.

[0066] In some examples, such as Figure 1As shown, the first motor 100 includes a stator 101, a rotor 102, and a motor output shaft 103. The stator 101 is ring-enclosed by the rotor 102, and the rotor 102 is connected to the motor output shaft 103. The sidewall of the rotor 102 is ring-enclosed by a third gear ring 54, and the motor output shaft 103 is connected to a third sun gear 51. This allows the first reduction mechanism 5 to be housed inside the first motor 100, thus reducing the space occupied by the first motor 100 and the first reduction mechanism 5, thereby reducing the size of the hybrid power system and facilitating its placement in the vehicle. The motor output shaft 103 can be a hollow shaft, with the output end of the hollow shaft ring-enclosed by the third planetary carrier 53.

[0067] In other examples, the first reduction mechanism 5 may also be a parallel shaft gear reducer. For example, the first reduction mechanism 5 includes a fourth gear and a fifth gear. The fourth gear is coaxially connected to the first motor 100, and the fifth gear is coaxially connected to the input end of the second reduction mechanism 6. The fourth gear and the fifth gear mesh, and the number of teeth on the fourth gear is less than the number of teeth on the fifth gear.

[0068] In some examples, such as Figure 1 As shown, the second reduction mechanism 6 includes a first gear 61 and a second gear 62. The first gear 61 and the second gear 62 are coaxially connected. The first gear 61 meshes with the first planetary carrier 13, and the second gear 62 is driven by the output shaft 7. The diameter of the second gear 62 is smaller than the diameter of the first gear 61.

[0069] In some examples, the diameter of the first gear 61 is smaller than the outer diameter of the first planetary carrier 13.

[0070] In some examples, such as Figure 1 As shown, the first clutch 2 includes a housing 21, a first clutch disc 22, and a first pressure plate 23. The housing 21 is connected to the output shaft of the engine 300. The first clutch disc 22 is annular and fixed to the inner side of the housing 21. The first pressure plate 23 is connected to the first gear ring 14. When the first clutch 2 is engaged, the first pressure plate 23 is connected to the first clutch disc 22, thereby enabling the engine 300 to drive the first gear ring 14. When the first clutch 2 is disengaged, the first pressure plate 23 is disengaged from the first clutch disc 22.

[0071] The second clutch 3 includes a second clutch disc 31 and a second pressure plate 32. The second clutch disc 31 is annular and fixed to the inner side of the housing 21. The second pressure plate 32 is connected to the second planetary carrier 17. When the second clutch 3 is engaged, the second pressure plate 32 is connected to the second clutch disc 31, thereby enabling the engine 300 to be driven by the second planetary carrier 17. When the second clutch 3 is disengaged, the second pressure plate 32 is separated from the second clutch disc 31.

[0072] Hybrid systems have a variety of different driving modes, which are illustrated below.

[0073] (1) Single motor drive mode

[0074] In single-motor drive mode, such as Figure 2 As shown, the first clutch 2, the second clutch 3 and the third clutch 4 are all disengaged, and the first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6.

[0075] At this time, neither the second motor 200 nor the engine 300 is working. The first motor 100 rotates, and the power of the first motor 100 is transmitted to the output shaft 7 in sequence through the third sun gear 51, the third planetary gear 52, the third planetary carrier 53, the first gear 61 and the second gear 62, thereby driving the wheel 400.

[0076] 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.

[0077] 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 7 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.

[0078] In some examples, the hybrid system features an energy recovery mode in single-motor drive mode. During energy recovery, wheel 400 decelerates, sequentially passing through second gear 62, first gear 61, third planetary carrier 53, third planetary gear 52, and driving the first motor 100. 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.

[0079] (2) First hybrid mode

[0080] The first hybrid mode has a first gear and a second gear.

[0081] In first gear, such as Figure 3As shown, the second clutch 3 is engaged, while the first clutch 2 and the third clutch 4 are disengaged. The first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6. The second motor 200 drives the output shaft 7 through the second sun gear 15, the second planetary gear 16, the first planetary carrier 13, and the second reduction mechanism 6. The engine 300 drives the output shaft 7 through the second clutch 3, the second planetary carrier 17, the second planetary gear 16, the first planetary carrier 13, and the second reduction mechanism 6. The power from the second motor 200 and the engine 300 is coupled at the second planetary gear 16 and then sequentially transmitted to the first planetary carrier 13 and the first gear 61. At the first gear 61, the power from the first motor 100, the second motor 200, and the engine 300 is coupled and then sequentially transmitted to the second gear 62 and the output shaft 7, driving the wheels 400 in sequence.

[0082] In second gear, such as Figure 4 As shown, the first clutch 2 is engaged, while the second clutch 3 and the third clutch 4 are disengaged. The first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6. The second motor 200 drives the output shaft 7 through the second sun gear 15, the second planetary gear 16, the first planetary carrier 13, and the second reduction mechanism 6. The engine 300 drives the output shaft 7 through the first clutch 2, the first ring gear 14, the first planetary gear 12, the first planetary carrier 13, and the second reduction mechanism 6. The power from the second motor 200 and the engine 300 is coupled at the first planetary gear 12 and then sequentially transmitted to the first planetary carrier 13 and the first gear 61. At the first gear 61, the power from the first motor 100, the second motor 200, and the engine 300 is coupled and then sequentially transmitted to the second gear 62 and the output shaft 7, thereby driving the wheel 400.

[0083] Because the power transmission routes of the first gear and the second gear are different, their gear ratios are also different. As described above, the dual planetary gear set 1 can decouple the engine 300 from the wheels 400, allowing the engine 300 to operate consistently in its high-efficiency range, thereby reducing the engine 300's fuel consumption.

[0084] (3) Second hybrid mode

[0085] The second hybrid mode has a third, fourth, and fifth gear.

[0086] In third gear, such as Figure 5As shown, both the first clutch 2 and the third clutch 4 are engaged, while the second clutch 3 is disengaged. The first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6. The engine 300 drives the output shaft 7 through the first clutch 2, the first ring gear 14, the first planetary gear 12, the first planetary carrier 13, and the second reduction mechanism 6. Because the third clutch 4 is engaged, the second motor 200, the first sun gear 11, and the second sun gear 15 do not rotate. At this time, the first motor 100 and the engine 300 jointly drive the output shaft 7. The power of the first motor 100 and the engine 300 is coupled at the first gear 61, and the coupled power drives the wheels 400 sequentially through the second gear 62 and the output shaft 7.

[0087] In fourth gear, such as Figure 6 As shown, both the first clutch 2 and the second clutch 3 are engaged, while the third clutch 4 is disengaged. The first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6. Since both the first clutch 2 and the second clutch 3 are engaged, a portion of the power from the engine 300 is transmitted sequentially through the first clutch 2, the first ring gear 14, the first planetary gear 12, and the first planetary carrier 13. The remaining power from the engine 300 is transmitted to the second clutch 3, the second planetary carrier 17, the second planetary gear 16, and the second sun gear 15. The second sun gear 15 can drive the second motor 200 to rotate, thereby enabling the second motor 200 to generate electricity. The electrical energy of the second motor 200 can either supply power to the first motor 100 or be stored in the battery pack. The power from the first motor 100 and the engine 300 is coupled at the first gear 61, and the coupled power drives the wheels 400 sequentially through the second gear 62 and the output shaft 7.

[0088] In fifth gear, such as Figure 7 As shown, both the second clutch 3 and the third clutch 4 are engaged. The first motor 100 drives the output shaft 7 through the first reduction mechanism 5 and the second reduction mechanism 6. The engine 300 drives the output shaft 7 through the second clutch 3, the second planetary carrier 17, the second planetary gear 16, the first planetary carrier 13, and the second reduction mechanism 6. Because the third clutch 4 is engaged, the second motor 200, the first sun gear 11, and the second sun gear 15 do not rotate. At this time, the first motor 100 and the engine 300 jointly drive the output shaft 7. The power of the first motor 100 and the engine 300 is coupled at the first gear 61, and the coupled power drives the wheel 400 sequentially through the second gear 62 and the output shaft 7.

[0089] Because the transmission routes of the third, fourth, and fifth gears are different, their transmission ratios are also different, thus making them suitable for different operating conditions of the vehicle.

[0090] This disclosure also provides a vehicle that includes the aforementioned hybrid power system.

[0091] This disclosure does not specifically limit the type of vehicle, such as cars, buses, trucks, sport utility vehicles (SUVs), etc.

[0092] The vehicle provided in this embodiment has a hybrid power system that, by engaging or disengaging the first clutch 2, the second clutch 3, and the third clutch 4, can assemble the first motor 100, the second motor 200, the engine 300, and the dual planetary gear set 1 into different transmission systems. This allows for switching of the power source of the hybrid power system and enables multiple driving modes to suit different operating conditions of the vehicle.

[0093] 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 dual planetary gear set (1), a first clutch (2), a second clutch (3), a third clutch (4), a first reduction mechanism (5), a second reduction mechanism (6), and an output shaft (7); The double planetary gear set (1) includes a first sun gear (11), a first planet gear (12), a first planet carrier (13), a first ring gear (14), a second sun gear (15), a second planet gear (16), and a second planet carrier (17). The first sun gear (11) and the second sun gear (15) are connected to the output shaft of the second motor (200). The first planet gear (12) meshes with the first sun gear (11), and the second planet gear (16) meshes with the second sun gear (15). The first planet carrier (13) meshes with the first sun gear (14). The first planetary gear (12) is rotatably connected, one end of the first planetary carrier (13) is engaged with the input end of the second reduction mechanism (6), and the other end is wrapped around the second sun gear (15) and engaged with the second planetary gear (16). One end of the first gear ring (14) is wrapped around the first sun gear (11) and engaged with the first planetary gear (12), and the other end is connected to the first clutch (2). One end of the second planetary carrier (17) is rotatably connected to the second planetary gear (16), and the other end is connected to the second clutch (3). The third clutch (4) is fixed to the housing of the hybrid power system and connected to the second motor (200); The first motor (100) is sequentially connected to the first reduction mechanism (5) and the second reduction mechanism (6). The second reduction mechanism (6) is connected to the output shaft (7). The output shaft (7) is used to connect the wheel (400). The engine (300) is connected in transmission to the first clutch (2) and the second clutch (3).

2. The hybrid power system according to claim 1, characterized in that, The first reduction mechanism (5) includes a third sun gear (51), a third planet gear (52), a third planet carrier (53), and a third gear ring (54); The third sun gear (51) is connected to the first motor (100), the third ring gear (54) is fixed to the housing of the hybrid power system, and the third ring gear (54) is wrapped around the third sun gear (51). The third planet gear (52) is located between the third sun gear (51) and the third ring gear (54). The input end of the third planet carrier (53) is rotatably connected to the third planet gear (52), and the output end is connected to the second reduction mechanism (6).

3. The hybrid power system according to claim 2, characterized in that, The first motor (100) includes a stator (101), a rotor (102), and a motor output shaft (103); The stator (101) is ringed around the rotor (102), the rotor (102) is connected to the motor output shaft (103), the sidewall of the rotor (102) is ringed around the third gear ring (54), and the motor output shaft (103) is connected to the third sun gear (51).

4. The hybrid power system according to claim 1, characterized in that, The first clutch (2) includes a housing (21), a first clutch disc (22) and a first pressure plate (23). The housing (21) is connected to the output shaft of the engine (300). The first clutch disc (22) is annular and fixed to the inner side of the housing (21). The first pressure plate (23) is connected to the first gear ring (14). When the first clutch (2) is engaged, the first pressure plate (23) is connected to the first clutch disc (22). The second clutch (3) includes a second clutch plate (31) and a second pressure plate (32). The second clutch plate (31) is annular and fixed to the inner side of the housing (21). The second pressure plate (32) is connected to the second planetary carrier (17). When the second clutch (3) is engaged, the second pressure plate (32) is connected to the second clutch plate (31).

5. The hybrid power system according to claim 1, characterized in that, The second reduction mechanism (6) includes a first gear (61) and a second gear (62); The first gear (61) and the second gear (62) are coaxially connected. The first gear (61) meshes with the first planetary carrier (13), and the second gear (62) is connected to the output shaft (7) for transmission. The diameter of the second gear (62) is smaller than the diameter of the first gear (61).

6. The hybrid power system according to claim 5, characterized in that, The diameter of the first gear (61) is smaller than the outer diameter of the first planetary carrier (13).

7. The hybrid power system according to any one of claims 1-6, characterized in that, The hybrid power system includes a single-motor drive mode; In the single-motor drive mode, the first clutch (2), the second clutch (3) and the third clutch (4) are all disengaged, and the first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6).

8. The hybrid power system according to any one of claims 1-6, characterized in that, The hybrid power system has a first hybrid power mode, and the first hybrid power mode has a first gear and a second gear; In the first gear, the second clutch (3) is engaged, and the first clutch (2) and the third clutch (4) are both disengaged. The first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6). The second motor (200) drives the output shaft (7) through the second sun gear (15), the second planetary gear (16), the first planetary carrier (13), and the second reduction mechanism (6). The engine (300) drives the output shaft (7) through the second clutch (3), the second clutch (3), the second planetary carrier (17), the second planetary gear (16), the first planetary carrier (13), and the second reduction mechanism (6). In the second gear, the first clutch (2) is engaged, and the second clutch (3) and the third clutch (4) are disengaged. The first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6). The second motor (200) drives the output shaft (7) through the second sun gear (15), the second planetary gear (16), the first planetary carrier (13), and the second reduction mechanism (6). The engine (300) drives the output shaft (7) through the first clutch (2), the first ring gear (14), the first planetary gear (12), the first planetary carrier (13), and the second reduction mechanism (6).

9. The hybrid power system according to any one of claims 1-6, characterized in that, The hybrid power system has a second hybrid power mode, which has a third gear, a fourth gear, and a fifth gear. In the third gear, both the first clutch (2) and the third clutch (4) are engaged, the second clutch (3) is disengaged, the first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6), and the engine (300) drives the output shaft (7) through the first clutch (2), the first gear ring (14), the first planetary gear (12), the first planetary carrier (13) and the second reduction mechanism (6); In the fourth gear, the first clutch (2) and the second clutch (3) are engaged, the third clutch (4) is disengaged, the first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6), the engine (300) drives the output shaft (7) through the first clutch (2), the first gear ring (14), the first planetary gear (12), the first planetary carrier (13) and the second reduction mechanism (6), and drives the second motor (200) through the second clutch (3), the second planetary carrier (17), the second planetary gear (16) and the second sun gear (15); In the fifth gear, both the second clutch (3) and the third clutch (4) are engaged. The first motor (100) drives the output shaft (7) through the first reduction mechanism (5) and the second reduction mechanism (6). The engine (300) drives the output shaft (7) through the second clutch (3), the second planetary carrier (17), the second planetary gear (16), the first planetary carrier (13), and the second reduction mechanism (6).

10. A vehicle, characterized in that, The vehicle includes a hybrid power system as described in any one of claims 1-9.

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