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 an engine, a first motor, a second motor, a first planetary gear train, a second planetary gear train, a first clutch, a second clutch, a first brake, a second brake, a reduction mechanism, and an output shaft. The second motor is driven by the reduction mechanism and the output shaft. The engine and the first motor are driven by the first and second clutches, which are also driven by the first and second planetary gear trains and the reduction mechanism. When the first and / or second clutches are engaged, the engine and the first motor drive the wheels through the output shaft. Therefore, the hybrid power system can switch power sources through the first and second clutches. It can also change the transmission ratio of the first and second planetary gear trains through the first and second brakes, thereby achieving gear shifting.

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 an oil pressure sensor that can solve the technical problems existing in related technologies. The technical solution of the oil pressure sensor is as follows.

[0006] In a first aspect, this disclosure provides a hybrid power system. The hybrid power system includes an engine, a first electric motor, a second electric motor, a first planetary gear train, a second planetary gear train, a first clutch, a second clutch, a first brake, a second brake, a reduction gear mechanism, and an output shaft;

[0007] The engine is connected to the first clutch and the second clutch in a transmission connection, and the first motor is connected to the first clutch and the second clutch in a transmission connection.

[0008] The second motor, the reduction mechanism, and the output shaft are sequentially connected in a transmission manner, and the output shaft is used for transmission connection with the wheel;

[0009] The first planetary gear train includes a first sun gear, a first planet carrier, first planet gears, and a first ring gear. One end of the first planet carrier is rotatably connected to the first planet gear, and the other end is connected to the first clutch. The first ring gear meshes with the first planet gear and is connected to the second clutch. The first sun gear is connected to the first brake.

[0010] The second planetary gear train includes a second sun gear, a second planet gear, and a second ring gear. The second planet gear is coaxially connected to the first planet gear, the second sun gear is connected to the second brake, and the second ring gear is connected to the reduction mechanism.

[0011] The first brake and the second brake are fixed to the housing of the hybrid power system.

[0012] In one possible implementation, the hybrid power system has a pure electric drive mode;

[0013] In the pure electric drive mode, the first clutch, the second clutch, the first brake, and the second brake are all disengaged, and the second motor drives the output shaft to rotate through the reduction mechanism.

[0014] In one possible implementation, the hybrid power system has a hybrid power mode;

[0015] In the hybrid mode, the first clutch and / or the second clutch are engaged, and the engine and the first motor drive the output shaft to rotate through the first clutch and / or the second clutch and the reduction mechanism. The second motor drives the output shaft to rotate through the reduction mechanism.

[0016] In one possible implementation, in the hybrid mode, the hybrid system has a first gear mode, a second gear mode, a third gear mode, a fourth gear mode, and a fifth gear mode.

[0017] In the first gear mode, the second clutch is engaged and the second brake is engaged;

[0018] In the second gear mode, the second clutch is engaged and the first brake is engaged;

[0019] In the third gear mode, the first clutch is engaged and the second clutch is engaged;

[0020] In the fourth gear mode, the first clutch is engaged and the first brake is engaged;

[0021] In the fifth gear mode, the first clutch is engaged and the second brake is engaged.

[0022] In one possible implementation, the hybrid power system further includes a third planetary gear train;

[0023] The third planetary gear train includes a third sun gear, a third planet carrier, third planet gears, and a third ring gear. The third sun gear is encircled by the output shaft of the engine and connected to the first motor. One end of the third planet carrier is connected to the output shaft of the engine, and the other end is rotatably connected to the third planet gear. The third ring gear meshes with the third planet gear and is connected to the first clutch and the second clutch.

[0024] In one possible implementation, the hybrid power system further includes a fourth gear;

[0025] The fourth gear is coaxially connected to the second gear ring and is also connected to the reduction mechanism. The diameter of the fourth gear is smaller than the diameter of the second gear ring.

[0026] In one possible implementation, the reduction mechanism includes a first gear, a second gear, and a third gear. The first gear is connected to the second motor, the second gear meshes with the first gear and is driven by the second gear ring, and the third gear is coaxially connected to the second gear and is driven by the output shaft.

[0027] The diameters of the first gear and the third gear are smaller than the diameter of the second gear.

[0028] In one possible implementation, the first clutch includes a first clutch clamp, a first annular steel plate, a first clutch disc, and a first hollow shaft. The first annular steel plate is fixed to the inner wall of the first clutch clamp. The first clutch clamp is connected to the engine and the first motor in a transmission connection. The two ends of the first hollow shaft are connected to the first planetary carrier and the first clutch disc.

[0029] The second clutch includes a second annular steel plate, a second clutch plate, and a second hollow shaft. The second annular steel plate is fixed to the inner wall of the first clutch clamp. The second hollow shaft is sleeved around the first hollow shaft. The two ends of the second hollow shaft are connected to the first gear ring and the second hollow shaft.

[0030] In one possible implementation, the gear ratio of the first sun gear to the first planet gear is greater than the gear ratio of the second sun gear to the second planet gear.

[0031] In a first aspect, this disclosure provides a vehicle that includes a hybrid power system as described in any one of the first aspects.

[0032] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0033] This disclosure provides a hybrid power system in which a second motor is connected to the wheels via a reduction gear and an output shaft. An engine is connected to a first clutch and a second clutch, and the first motor is also connected to the first clutch and the second clutch. The first clutch and the second clutch are connected to the wheels via a first planetary gear train, a second planetary gear train, a reduction gear, and an output shaft. When the first clutch and / or the second clutch are engaged, power from the engine and the first motor can be transmitted to the wheels. When both the first and second clutches are disengaged, power from the engine and the first motor cannot be transmitted to the wheels. Therefore, the hybrid power system can switch power sources via the first and second clutches. Furthermore, when the first brake is engaged, the first sun gear of the first planetary gear train is fixed; when the second brake is engaged, the second sun gear of the second planetary gear train is fixed. Therefore, the hybrid power system can change the transmission ratio of the first and second planetary gear trains via the first and second brakes, thereby enabling the hybrid power system to switch between different gears.

[0034] 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

[0035] 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:

[0036] Figure 1 This is a schematic diagram of the structure of a hybrid power system shown in an embodiment of this disclosure;

[0037] Figure 2 This is a schematic diagram of power transmission in the pure electric drive mode of a hybrid power system, as shown in an embodiment of this disclosure.

[0038] Figure 3 This is a schematic diagram of power transmission in the first gear mode of a hybrid power system according to an embodiment of the present disclosure;

[0039] Figure 4 This is a schematic diagram of the power transmission in the second gear mode of a hybrid power system according to an embodiment of the present disclosure;

[0040] Figure 5 This is a schematic diagram of the power transmission in the third gear mode of a hybrid power system according to an embodiment of the present disclosure;

[0041] Figure 6 This is a schematic diagram of the power transmission in the fourth gear mode of a hybrid power system according to an embodiment of the present disclosure;

[0042] Figure 7This is a schematic diagram of the power transmission in the fifth gear mode of a hybrid power system, as shown in an embodiment of this disclosure.

[0043] Legend:

[0044] 1. First planetary gear train; 11. First sun gear; 12. First planet carrier; 13. First planet gear; 14. First gear ring.

[0045] 2. Second planetary gear train; 21. Second sun gear; 22. Second planetary gears; 23. Second gear ring;

[0046] 3. First clutch; 31. First clutch clamp; 32. First annular steel plate; 33. First clutch disc; 34. First hollow shaft;

[0047] 4. Second clutch; 41. Second annular steel plate; 42. Second clutch disc; 43. Second hollow shaft;

[0048] 5. First brake;

[0049] 6. Second brake;

[0050] 7. Reduction mechanism; 71. First gear; 72. Second gear; 73. Third gear;

[0051] 8. Third planetary gear train; 81. Third sun gear; 82. Third planet carrier; 83. Third planet gear; 84. Third gear ring.

[0052] 9. The fourth gear;

[0053] 10. Differential;

[0054] 100. Engine;

[0055] 200. First motor;

[0056] 300. Second motor;

[0057] 400, Output shaft;

[0058] 500. Wheel.

[0059] 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

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] In view of the above-mentioned technical problems, embodiments of this disclosure provide a hybrid power system, such as... Figure 1 As shown, the hybrid power system includes an engine 100, a first motor 200, a second motor 300, a first planetary gear train 1, a second planetary gear train 2, a first clutch 3, a second clutch 4, a first brake 5, a second brake 6, a reduction gear mechanism 7, and an output shaft 400. The engine 100 is driven by the first clutch 3 and the second clutch 4, and the first motor 200 is also driven by the first clutch 3 and the second clutch 4. The second motor 300, the reduction gear mechanism 7, and the output shaft 400 are sequentially driven by each other, and the output shaft 400 is used for drive connection with the wheels 500.

[0066] The first planetary gear train 1 includes a first sun gear 11, a first planet carrier 12, a first planet gear 13, and a first ring gear 14. One end of the first planet carrier 12 is rotatably connected to the first planet gear 13, and the other end is connected to the first clutch 3. The first ring gear 14 meshes with the first planet gear 13 and is connected to the second clutch 4. The first sun gear 11 is connected to the first brake 5.

[0067] The second planetary gear train 2 includes a second sun gear 21, a second planet gear 22, and a second ring gear 23. The second planet gear 22 is coaxially connected to the first planet gear 13, the second sun gear 21 is connected to the second brake 6, and the second ring gear 23 is connected to the reduction mechanism 7 for transmission.

[0068] The first brake 5 and the second brake 6 are fixed to the housing of the hybrid power system.

[0069] The hybrid system also includes a battery pack, which is electrically connected to the first motor 200 and the second motor 300, and can supply power to the first motor 200 and the second motor 300. When the first motor 200 and the second motor 300 are driven by an external force, they can charge the battery pack.

[0070] The technical solution provided in this embodiment of the invention involves a second motor 300 connected to a wheel 500 via a reduction mechanism 7 and an output shaft 400. An engine 100 is connected to a first clutch 3 and a second clutch 4, as is a first motor 200. The first clutch 3 and the second clutch 4 are connected to the wheel 500 via a first planetary gear train 1, a second planetary gear train 2, a reduction mechanism 7, and an output shaft 400. When the first clutch 3 and / or the second clutch 4 are engaged, the power from the engine 100 and the first motor 200 can be transmitted to the wheel 500. When both the first clutch 3 and the second clutch 4 are disengaged, the power from the engine 100 and the first motor 200 cannot be transmitted to the wheel 500. Therefore, the hybrid power system can switch power sources via the first clutch 3 and the second clutch 4. Furthermore, when the first brake 5 is engaged, the first sun gear 11 of the first planetary gear train 1 is fixed; when the second brake 6 is engaged, the second sun gear 21 of the second planetary gear train 2 is fixed. Therefore, the hybrid power system can change the transmission ratio of the first planetary gear train 1 and the second planetary gear train 2 through the first brake 5 and the second brake 6, thereby enabling the hybrid power system to switch between different gears.

[0071] Hybrid systems can achieve different driving modes. The following is an example of how to implement the driving modes of a hybrid system.

[0072] In some examples, such as Figure 2 As shown, the hybrid system has a pure electric drive mode.

[0073] In pure electric drive mode, the first clutch 3, the second clutch 4, the first brake 5, and the second brake 6 are all disengaged, and the second motor 300 drives the output shaft 400 to rotate through the reduction mechanism 7. At this time, neither the engine 100 nor the second motor 300 is working; only the second motor 300 drives the output shaft 400, thereby driving the wheels 500.

[0074] The pure electric 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.

[0075] Among them, the pure electric drive mode can realize reversing and energy recovery modes.

[0076] In reverse mode, the second motor 300 reverses, causing the reduction mechanism 7 and output shaft 400 to drive the wheels 500 in reverse, thus achieving reversing. Since the vehicle speed is relatively slow and the reversing time is short in reverse mode, the first motor 200 and engine 100 do not need to participate in driving, which can reduce the vehicle's energy consumption.

[0077] Under energy recovery conditions, wheel 500 decelerates and drives second motor 300 through output shaft 400 and reduction mechanism 7, so that second motor 300 can convert the vehicle's kinetic energy into electrical energy through negative torque, thereby charging the battery pack.

[0078] In some examples, such as Figures 3-7 As shown, the hybrid system has a hybrid mode.

[0079] In hybrid mode, the first clutch 3 and / or the second clutch 4 engage, and the engine 100 and the first motor 200 drive the output shaft 400 to rotate via the first clutch 3 and / or the second clutch 4 and the reduction mechanism 7. The second motor 300 also drives the output shaft 400 to rotate via the reduction mechanism 7. The power from the engine 100, the first motor 200, and the second motor 300 is coupled in the reduction mechanism 7, causing the reduction mechanism 7 to drive the wheels 500 via the output shaft 400.

[0080] At this time, the vehicle has sufficient power, so the hybrid mode is suitable for high-speed driving conditions.

[0081] In some examples, the hybrid system has a first gear mode, a second gear mode, a third gear mode, a fourth gear mode, and a fifth gear mode in hybrid mode.

[0082] In first gear mode, such as Figure 3As shown, the second clutch 4 is engaged and the second brake 6 is engaged. Power from the engine 100 and the first motor 200 is sequentially transmitted to the second clutch 4, the first ring gear 14, the first planetary gear 13, the second planetary gear 22, the second ring gear 23, the reduction mechanism 7, the output shaft 400, and the wheel 500. Simultaneously, power from the second motor 300 is sequentially transmitted to the reduction mechanism 7, the output shaft 400, and the wheel 500.

[0083] Since the second brake 6 is engaged and the second sun gear 21 is connected to the second brake 6, the second sun gear 21 does not rotate. Therefore, the second planet gear 22 only revolves around the second sun gear 21 and does not rotate on its own axis.

[0084] In the second gear mode, such as Figure 4 As shown, the second clutch 4 is engaged and the first brake 5 is engaged. Power from the engine 100 and the first motor 200 is sequentially transmitted to the second clutch 4, the first ring gear 14, the first planetary gear 13, the second planetary gear 22, the second ring gear 23, the reduction mechanism 7, the output shaft 400, and the wheel 500. Simultaneously, power from the second motor 300 is sequentially transmitted to the reduction mechanism 7, the output shaft 400, and the wheel 500.

[0085] Since the first brake 5 is engaged and connected to the first sun gear 11, the first sun gear 11 does not rotate. Therefore, the first planetary gear 13 only revolves around the first sun gear 11 and does not rotate on its own axis.

[0086] In the third gear mode, such as Figure 5 As shown, the first clutch 3 is engaged and the second clutch 4 is engaged. Since the first clutch 3 and the second clutch 4 are engaged simultaneously, and both the first clutch 3 and the second clutch 4 are connected to the first planetary gear train 1, the first planetary gear train 1 rotates as a whole, that is, there is no relative rotation between the first sun gear 11, the first planet carrier 12, the first planet gear 13 and the first ring gear 14.

[0087] The power from the engine 100 and the first motor 200 is sequentially transmitted to the first clutch 3 (second clutch 4), the first planetary gear 13, the second planetary gear 22, the second ring gear 23, the reduction mechanism 7, the output shaft 400, and the wheel 500. Simultaneously, the power from the second motor 300 is sequentially transmitted to the reduction mechanism 7, the output shaft 400, and the wheel 500.

[0088] In the fourth gear mode, such as Figure 6 As shown, the first clutch 3 is engaged and the first brake 5 is engaged.

[0089] The power from the engine 100 and the first motor 200 is sequentially transmitted to the first clutch 3, the first planetary carrier 12, the first planetary gear 13, the second planetary gear 22, the second ring gear 23, the reduction mechanism 7, the output shaft 400, and the wheel 500. At the same time, the power from the second motor 300 is sequentially transmitted to the reduction mechanism 7, the output shaft 400, and the wheel 500.

[0090] Since the first brake 5 is engaged and connected to the first sun gear 11, the first sun gear 11 does not rotate. Therefore, the first planetary gear 13 only revolves around the first sun gear 11 and does not rotate on its own axis.

[0091] In the fifth gear mode, such as Figure 7 As shown, the first clutch 3 is engaged and the second brake 6 is engaged. Power from the engine 100 and the first motor 200 is sequentially transmitted to the first clutch 3, the first planetary carrier 12, the first planetary gear 13, the second planetary gear 22, the second ring gear 23, the reduction mechanism 7, the output shaft 400, and the wheel 500. Simultaneously, power from the second motor 300 is sequentially transmitted to the reduction mechanism 7, the output shaft 400, and the wheel 500.

[0092] Since the second brake 6 is engaged and the second sun gear 21 is connected to the second brake 6, the second sun gear 21 does not rotate. Therefore, the second planet gear 22 only revolves around the second sun gear 21 and does not rotate on its own axis.

[0093] In some examples, such as Figure 1 As shown, the hybrid power system also includes a third planetary gear train 8. The third planetary gear train 8 includes a third sun gear 81, a third planet carrier 82, third planet gears 83, and a third ring gear 84. The third sun gear 81 surrounds the output shaft of the engine 100 and is connected to the first motor 200. One end of the third planet carrier 82 is connected to the output shaft of the engine 100, and the other end is rotatably connected to the third planet gear 83. The third ring gear 84 meshes with the third planet gear 83 and is drive-connected to the first clutch 3 and the second clutch 4. The third planetary gear train 8 can distribute power between the engine 100 and the first motor 200, thereby achieving stepless speed regulation of the hybrid power system. Furthermore, the planetary gear train 8 can decouple the engine 100 and the wheels 500, allowing the engine 100 to always operate in its high-efficiency range, thus resulting in lower fuel consumption.

[0094] When the engine 100 is operating, its power is sequentially transmitted to the third planetary carrier 82, the third planetary gears 83, and the third ring gear 84. When the first motor 200 is operating, its power is sequentially transmitted to the third sun gear 81, the third planetary gears 83, and the third ring gear 84, and then the power from the third ring gear 84 is transmitted to either the first clutch 3 or the second clutch 4. The power from the engine 100 and the first motor 200 is coupled at the third planetary gear 83.

[0095] In some examples, such as Figure 1 As shown, the hybrid power system also includes a fourth gear 9. The fourth gear 9 is coaxially connected to the second gear ring 23 and is also connected to the reduction mechanism 7. The diameter of the fourth gear 9 is smaller than the diameter of the second gear ring 23. Because the fourth gear 9 and the second gear ring 23 are coaxially connected, the rotational speed of the fourth gear 9 is the same as that of the second gear ring 23. The fourth gear 9 enables speed reduction and torque amplification between the third gear ring 84 and the reduction mechanism 7, thereby increasing the driving force on the wheel 500.

[0096] In some examples, such as Figure 1 As shown, the reduction mechanism 7 includes a first gear 71, a second gear 72, and a third gear 73. The first gear 71 is connected to the second motor 300. The second gear 72 meshes with the first gear 71 and is also driven by the second gear ring 23. The third gear 73 is coaxially connected to the second gear 72 and is driven by the output shaft 400. The diameters of the first gear 71 and the third gear 73 are smaller than the diameter of the second gear 72. Because the diameter of the first gear 71 is smaller than the diameter of the second gear 72, the rotational speed of the second gear 72 is lower than that of the first gear 71. Since the third gear 73 is coaxially connected to the second gear 72, the rotational speeds of the second gear 72 and the third gear 73 are the same. Because the diameter of the third gear 73 is smaller than that of the second gear 72, compared to a direct drive connection between the output shaft 400 and the second gear 72, a connection between the output shaft 400 and the third gear 73 can achieve a larger torque and a lower rotational speed, making it easier for the output shaft 400 to drive the wheels.

[0097] The power from the second motor 300 is sequentially transmitted to the first gear 71, the second gear 72, the third gear 73, the output shaft 400, and the wheel 500. The power from the engine 100 and the first motor 200 is transmitted to the second gear ring 23, which then sequentially transmits the power to the third gear 73, the output shaft 400, and the wheel 500. The power from the engine 100, the first motor 200, and the second motor 300 is coupled at the second gear 72.

[0098] In some examples, such as Figure 1As shown, the first clutch 3 and the second clutch 4 form a dual clutch. The first clutch 3 includes a first clutch clamp 31, a first annular steel plate 32, a first clutch disc 33, and a first hollow shaft 34. The first annular steel plate 32 is fixed to the inner wall of the first clutch clamp 31. The first clutch clamp 31 is connected to the engine 100 and the first motor 200 for transmission. The two ends of the first hollow shaft 34 are connected to the first planetary carrier 12 and the first clutch disc 33. When the first annular steel plate 32 and the first clutch disc 33 are connected, the first clutch 3 is engaged, allowing the power from the engine 100 and the first motor 200 to be transmitted to the first clutch clamp 31, the first annular steel plate 32, the first clutch disc 33, and the first planetary carrier 12.

[0099] The second clutch 4 includes a second annular steel plate 41, a second clutch disc 42, and a second hollow shaft 43. The second annular steel plate 41 is fixed to the inner wall of the first clutch clamp 31. The second hollow shaft 43 is fitted around the first hollow shaft 34, and both ends of the second hollow shaft 43 are connected to the first gear ring 14 and the second hollow shaft 43. When the second annular steel plate 41 and the second clutch disc 42 are connected, the second clutch 4 is engaged, allowing the power from the engine 100 and the first motor 200 to be transmitted to the first clutch clamp 31, the second annular steel plate 41, the second clutch disc 42, and the first gear ring 14.

[0100] The first clutch 3 and the second clutch 4 form a dual clutch, allowing them to share the same clutch clamp, thereby reducing the size of both clutches.

[0101] The first clutch clamp 31 is coaxially connected to the third gear ring 84, and the first hollow shaft 34 is sleeved around the connecting shaft between the first clutch clamp 31 and the third gear ring 84.

[0102] In some examples, such as Figure 1 As shown, the gear ratio of the first sun gear 11 to the first planet gear 13 is greater than the gear ratio of the second sun gear 21 to the second planet gear 22. Specifically, the diameter of the first sun gear 11 is larger than the diameter of the first planet gear 13, and the diameter of the second sun gear 21 is smaller than the diameter of the second planet gear 22. This allows the first planetary gear train 1 and the second planetary gear train 2 to achieve different transmission ratios.

[0103] In some examples, such as Figure 1 As shown, the hybrid system also includes a differential 10. The differential 10 meshes with a third gear 73. When the vehicle turns, the differential 10 allows the two wheels 500 to rotate at different speeds, thus enabling the vehicle to turn smoothly.

[0104] This disclosure also provides a vehicle that includes the aforementioned hybrid power system.

[0105] This disclosure does not specifically limit the type of vehicle, such as cars, buses, trucks, sport utility vehicles (SUVs), etc.

[0106] 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 an engine (100), a first motor (200), a second motor (300), a first planetary gear train (1), a second planetary gear train (2), a first clutch (3), a second clutch (4), a first brake (5), a second brake (6), a reduction mechanism (7), and an output shaft (400). The engine (100) is connected to the first clutch (3) and the second clutch (4) in a transmission connection, and the first motor (200) is connected to the first clutch (3) and the second clutch (4) in a transmission connection. The second motor (300), the reduction mechanism (7) and the output shaft (400) are sequentially connected in a transmission manner, and the output shaft (400) is used to drive the wheel (500). The first planetary gear train (1) includes a first sun gear (11), a first planet carrier (12), a first planet gear (13), and a first ring gear (14). One end of the first planet carrier (12) is rotatably connected to the first planet gear (13), and the other end is connected to the first clutch (3). The first ring gear (14) meshes with the first planet gear (13) and is connected to the second clutch (4). The first sun gear (11) is connected to the first brake (5). The second planetary gear train (2) includes a second sun gear (21), a second planet gear (22), and a second ring gear (23). The second planet gear (22) is coaxially connected to the first planet gear (13). The second sun gear (21) is connected to the second brake (6). The second ring gear (23) is connected to the reduction mechanism (7) via transmission. The first brake (5) and the second brake (6) are fixed to the housing of the hybrid power system.

2. The hybrid power system according to claim 1, characterized in that, The hybrid power system has a pure electric drive mode; In the pure electric drive mode, the first clutch (3), the second clutch (4), the first brake (5) and the second brake (6) are all disengaged, and the second motor (300) drives the output shaft (400) to rotate through the reduction mechanism (7).

3. The hybrid power system according to claim 1, characterized in that, The hybrid power system has a hybrid power mode; In the hybrid mode, the first clutch (3) and / or the second clutch (4) are engaged, and the engine (100) and the first motor (200) drive the output shaft (400) to rotate through the first clutch (3) and / or the second clutch (4) and the reduction mechanism (7). The second motor (300) drives the output shaft (400) to rotate through the reduction mechanism (7).

4. The hybrid power system according to claim 3, characterized in that, In the hybrid mode, the hybrid system has a first gear mode, a second gear mode, a third gear mode, a fourth gear mode, and a fifth gear mode; In the first gear mode, the second clutch (4) is engaged and the second brake (6) is engaged; In the second gear mode, the second clutch (4) is engaged and the first brake (5) is engaged; In the third gear mode, the first clutch (3) is engaged and the second clutch (4) is engaged; In the fourth gear mode, the first clutch (3) is engaged and the first brake (5) is engaged; In the fifth gear mode, the first clutch (3) is engaged and the second brake (6) is engaged.

5. The hybrid power system according to any one of claims 1-4, characterized in that, The hybrid power system also includes a third planetary gear train (8); The third planetary gear train (8) includes a third sun gear (81), a third planet carrier (82), a third planet gear (83), and a third ring gear (84). The third sun gear (81) is encircled by the output shaft of the engine (100) and connected to the first motor (200). One end of the third planet carrier (82) is connected to the output shaft of the engine (100), and the other end is rotatably connected to the third planet gear (83). The third ring gear (84) meshes with the third planet gear (83) and is connected to the first clutch (3) and the second clutch (4) in a transmission connection.

6. The hybrid power system according to any one of claims 1-4, characterized in that, The hybrid power system also includes a fourth gear (9); The fourth gear (9) is coaxially connected to the second gear ring (23) and is connected to the reduction mechanism (7) in a transmission manner. The diameter of the fourth gear (9) is smaller than the diameter of the second gear ring (23).

7. The hybrid power system according to any one of claims 1-4, characterized in that, The reduction mechanism (7) includes a first gear (71), a second gear (72) and a third gear (73). The first gear (71) is connected to the second motor (300). The second gear (72) meshes with the first gear (71) and is driven by the second gear ring (23). The third gear (73) is coaxially connected with the second gear (72) and is driven by the output shaft (400). The diameters of the first gear (71) and the third gear (73) are smaller than the diameter of the second gear (72).

8. The hybrid power system according to any one of claims 1-4, characterized in that, The first clutch (3) includes a first clutch clamp (31), a first annular steel plate (32), a first clutch disc (33), and a first hollow shaft (34). The first annular steel plate (32) is fixed to the inner wall of the first clutch clamp (31). The first clutch clamp (31) is connected to the engine (100) and the first motor (200) for transmission. The two ends of the first hollow shaft (34) are connected to the first planetary carrier (12) and the first clutch disc (33). The second clutch (4) includes a second annular steel plate (41), a second clutch plate (42), and a second hollow shaft (43). The second annular steel plate (41) is fixed to the inner wall of the first clutch clamp (31). The second hollow shaft (43) is wrapped around the first hollow shaft (34). The two ends of the second hollow shaft (43) are connected to the first gear ring (14) and the second hollow shaft (43).

9. The hybrid power system according to any one of claims 1-4, characterized in that, The ratio of the number of teeth of the first sun gear (11) to the first planet gear (13) is greater than the ratio of the number of teeth of the second sun gear (21) to the second planet gear (22).

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

Images