Hybrid power driving system and vehicle

Abstract

The utility model discloses a hybrid power driving system and a vehicle. Comprising an engine, a first motor and a mode switching module. The mode switching module comprises a combination unit and a first planet row, the first planet row comprises a first planet carrier, a first planet gear, a first gear ring and a first sun gear, the first planet gear is rotatably installed on the first planet carrier and engaged with the first sun gear and the first gear ring, and the first motor is connected with the first sun gear; the engine is connected with the first gear ring and the combination unit. The hybrid power driving system can output large torque, and can better cope with the working conditions such as cross-country climbing or vehicle escape.

Description

TECHNICAL FIELD

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

[0002] With the development of science and technology, the hybrid power driving system is more and more widely used in vehicles. In the related technology, the hybrid power driving system usually has a driving motor and an engine, so that the driving motor and the engine serve as the power source of the vehicle. However, in the related technology, the torque output by the engine through the transmission mechanism is small, and when it serves as the power source to provide driving force to the wheels of the vehicle, the wheel end torque of the wheels is also small, which cannot cope with the working conditions requiring large torque output such as off-road climbing or escaping. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application provide a hybrid power driving system and a vehicle, aiming at solving the problem that the torque output by the engine through the transmission mechanism is small and cannot cope with the working conditions requiring large torque output such as off-road climbing or escaping.

[0004] In a first aspect, the embodiments of the present application provide a hybrid power driving system, comprising: an engine, a first motor and a mode switching module.

[0005] The mode switching module comprises a combination unit and a first planetary gear set, the first planetary gear set comprises a first planetary carrier, a first planetary gear, a first ring gear and a first sun gear, the first planetary gear is rotatably installed on the first planetary carrier, and the first planetary gear is meshed with the first sun gear and the first ring gear respectively, the first motor is connected with the first sun gear, and the engine is connected with the first ring gear and the combination unit.

[0006] Optionally, the mode switching module further comprises a first clutch, and any two of the first planetary carrier, the first ring gear and the first sun gear are respectively connected to two ends of the first clutch.

[0007] Optionally, the combination unit is a brake, one end of the brake is connected with an output shaft of the engine, and the other end of the brake is fixed, and the output shaft of the engine is connected with the first ring gear.

[0008] Optionally, the combination unit is a clutch, one end of the clutch is connected with an output shaft of the engine, and the other end of the clutch is connected with the first ring gear, and the output shaft of the engine is selectively connected with the first ring gear through the clutch.

[0009] Optionally, the first clutch and the combination unit at least partially overlap in the axial direction.

[0010] Or, the first motor and at least one of the first planetary gear set, the first clutch and the combination unit at least partially overlap in an axial direction.

[0011] Optionally, the hybrid drive system further comprises a gear shifting module.

[0012] The gear shifting module comprises an input shaft and a gear shifting unit, the gear shifting unit is connected to the input shaft, and the input shaft is connected to the first carrier, and the gear shifting unit is used to realize the switching of different gears of the hybrid drive system.

[0013] Optionally, the gear shifting unit comprises a second planetary gear set, a second clutch and a second brake.

[0014] The second planetary gear set comprises a second carrier, a second planetary gear, a second ring gear and a second sun gear, the second planetary gear is rotatably installed on the second carrier, and the second planetary gear is respectively engaged with the second sun gear and the second ring gear.

[0015] One end of the second clutch is connected to the input shaft, and the other end of the second clutch is connected to the second ring gear.

[0016] Or, one end of the second clutch is connected to the input shaft, and the other end of the second clutch is connected to the second sun gear.

[0017] One end of the second brake is connected to the second ring gear, and the other end of the second brake is fixed.

[0018] Or, one end of the second brake is connected to the second sun gear, and the other end of the second brake is fixed.

[0019] Optionally, the first motor comprises a rotor, the rotor has a receiving cavity, and at least part of the first planetary gear set and the second planetary gear set is arranged in the receiving cavity.

[0020] Or, at least part of the first planetary gear set and the second clutch is arranged in the receiving cavity.

[0021] Optionally, the second clutch and the second brake at least partially overlap in an axial direction.

[0022] Optionally, the rotor has a receiving cavity, and the first planetary gear set and the second clutch are arranged in the receiving cavity.

[0023] Optionally, the gear shifting unit further comprises a third planetary gear set, a third clutch and a third brake.

[0024] The third planetary gear set comprises a third carrier, a third planetary gear, a third ring gear and a third sun gear, the third planetary gear is rotatably mounted on the third carrier, and the third planetary gear is engaged with the third sun gear and the third ring gear respectively;

[0025] One end of the third clutch is connected with the input shaft, and the other end of the third clutch is connected with the third carrier;

[0026] One end of the third brake is connected with the third sun gear, and the other end of the third brake is fixed;

[0027] The second ring gear is connected with the third carrier, and the third ring gear is connected with the second carrier.

[0028] Optionally, the third clutch and the third brake at least partially overlap in the axial direction.

[0029] Optionally, the second brake at least partially overlaps at least one of the second planetary gear set and the third planetary gear set in the axial direction.

[0030] Optionally, the gear shifting unit further comprises a gear output gear;

[0031] The gear output gear is connected with the second carrier or the second ring gear;

[0032] Or, the gear output gear is connected with the second carrier and the third ring gear.

[0033] Optionally, the hybrid power driving system further comprises an output module, the output module comprises a gear set and a differential, and the gear set is drivingly connected between the gear output gear and the differential.

[0034] Optionally, the hybrid power driving system further comprises a second motor;

[0035] One of the first motor and the second motor is arranged in a front drive system, and the other is arranged in a rear drive system.

[0036] In a second aspect, the embodiments of the present application provide a vehicle, the vehicle comprising the hybrid power driving system according to any one of the first aspect.

[0037] In the embodiment of the present application, since the first planetary gear is rotatably installed on the first planet carrier and meshes with the first sun gear and the first ring gear respectively, the first planetary gear, the first sun gear and the first ring gear can transmit torque when rotating. Since the first motor is connected with the first sun gear, the first motor can drive the first sun gear to rotate, i.e. transmit torque to the first sun gear. In addition, the engine is connected with the first ring gear, so the engine can transmit torque to the first ring gear, thereby making the torque output by the first planetary gear set larger, and further making the wheel end torque of the wheels of the vehicle larger when the hybrid power driving system is applied to the vehicle. That is, in the embodiment of the present application, the first motor is connected with the first sun gear, and the engine is connected with the first ring gear and the combination unit, so that the engine and / or the first motor can transmit torque to the first planetary gear set, realizing hybrid power output for the vehicle, and since the output shaft of the engine is connected with the first ring gear, the wheel end torque of the wheels of the vehicle is larger when the hybrid power driving system is applied to the vehicle, so that the vehicle can better cope with off-road climbing or escape conditions. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 a schematic diagram of a mode switching module provided by an embodiment of the present application;

[0039] Figure 2 a schematic diagram of a gear switching module provided by an embodiment of the present application;

[0040] Figure 3 a schematic diagram of an output module provided by an embodiment of the present application;

[0041] Figure 4 a schematic diagram of an output module provided by an embodiment of the present application;

[0042] Figure 5 a schematic diagram of a combination unit being a brake and the gear switching module realizing four gears provided by an embodiment of the present application;

[0043] Figure 6 a schematic diagram of a hybrid power driving system provided by an embodiment of the present application;

[0044] Figure 7 a schematic diagram of a hybrid power driving system provided by an embodiment of the present application;

[0045] Figure 8 a schematic diagram of a combination unit being a brake and the gear switching module realizing four gears provided by an embodiment of the present application;

[0046] Figure 9 a schematic diagram of a combination unit being a brake and the gear switching module realizing four gears provided by an embodiment of the present application;

[0047] Figure 10 Fig. 1 shows a schematic diagram of a combination unit as a brake and a gear shifting module implementing two gears according to an embodiment of the present application;

[0048] Figure 11 Fig. 2 shows a schematic diagram of a combination unit as a clutch and a gear shifting module implementing two gears according to an embodiment of the present application;

[0049] Figure 12 Fig. 3 shows a schematic diagram of a combination unit as a brake and a gear shifting module implementing two gears according to an embodiment of the present application;

[0050] Figure 13 Fig. 4 shows a schematic diagram of a hybrid power drive system according to an embodiment of the present application.

[0051] Reference signs:

[0052] 001: second motor; 10: engine; 20: first motor; 30: mode switching module; 31: combination unit; 32: first planetary gear set; 33: first clutch; 321: first carrier; 322: first planet gear; 323: first ring gear; 324: first sun gear; 40: gear shifting module; 41: input shaft; 42: gear shifting unit; 421: second planetary gear set; 422: second clutch; 423: second brake; 4211: second carrier; 4212: second planet gear; 4213: second ring gear; 4214: second sun gear; 424: third planetary gear set; 425: third clutch; 426: third brake; 4241: third carrier; 4242: third planet gear; 4243: third ring gear; 4244: third sun gear; 427: gear output gear; 50: output module; 51: first gear; 52: second gear; 53: third gear; 54: fourth gear; 55: fifth gear. DETAILED DESCRIPTION

[0053] The terms "first", "second" in the specification and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0054] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0055] In the description of the present application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Before explaining the hybrid drive system provided by the embodiments of the present application, the application scenario of the hybrid drive system provided by the embodiments of the present application is described in detail: in the related art, the hybrid drive system includes an engine, a motor and a planetary gear set, the planetary gear set includes a carrier, a planet gear, a ring gear and a sun gear, the planet gear is rotatably mounted on the carrier, and the planet gear is respectively engaged with the sun gear and the ring gear, the output shaft of the engine is connected with the carrier, the present inventors find that in the connection mode adopted in the related art, the torque output by the planetary gear set is k / (k+1) relative to the torque input by the engine, so that the wheel end torque of the vehicle wheel is relatively small, which cannot cope with the working conditions requiring large torque output, such as off-road climbing or escape.

[0057] The embodiments of the present application provide a hybrid drive system, as shown in the figure, the hybrid drive system comprises an engine 10, a first motor 20 and a mode switching module 30. Figures 1 to 13

[0058] The mode switching module 30 comprises a combination unit 31 and a first planetary gear set 32; the first planetary gear set 32 comprises a first carrier 321, a first planet gear 322, a first ring gear 323 and a first sun gear 324, the first planet gear 322 is rotatably mounted on the first carrier 321, and the first planet gear 322 is respectively engaged with the first sun gear 324 and the first ring gear 323, the first motor 20 is connected with the first sun gear 324, and the engine 10 is connected with the first ring gear 323 and the combination unit 31.

[0059] ​It should be noted that the engine 10 has an output shaft, and the output shaft of the engine 10 is connected with the first ring gear 323 and the coupling unit 31.

[0060] In addition, the coupling unit 31 is used for controlling the on-off of power transmission between the engine 10 and the first planetary gear set 32, and the power transmission is connected when the coupling unit 31 is coupled, and the power transmission is disconnected when the coupling unit 31 is disconnected; or the power transmission is disconnected when the coupling unit 31 is coupled, and the power transmission is connected when the coupling unit 31 is disconnected.

[0061] In the embodiment of the present application, since the first planetary gear 322 is rotatably installed on the first planet carrier 321, and the first planetary gear 322 is respectively meshed with the first sun gear 324 and the first ring gear 323, the first planetary gear 322, the first sun gear 324 and the first ring gear 323 can transmit torque when rotating. Since the first motor 20 is connected with the first sun gear 324, the first motor 20 can drive the first sun gear 324 to rotate, that is, transmit torque to the first sun gear 324. In addition, the engine 10 is connected with the first ring gear 323, so the engine 10 can transmit torque to the first ring gear 323, so that the torque output by the first planetary gear set 32 is larger, thereby making the wheel end torque of the vehicle wheel larger when the hybrid power driving system is applied to the vehicle. That is, in the embodiment of the present application, by connecting the first motor 20 with the first sun gear 324 and connecting the engine 10 with the first ring gear 323 and the coupling unit 31, the engine 10 and / or the first motor 20 can transmit torque to the first planetary gear set 32, realize hybrid power output for the vehicle, and since the output shaft of the engine 10 is connected with the first ring gear 323, when the hybrid power driving system is applied to the vehicle, the wheel end torque of the vehicle wheel is larger, so that the vehicle can better cope with off-road climbing or escape conditions, and compared with the prior art that uses a hydraulic torque converter to amplify engine torque at the start or low speed of the vehicle, the embodiment of the present application can still realize low-speed large-torque output of the engine without a hydraulic torque converter, thereby reducing weight and cost, simplifying the hydraulic system and saving space.

[0062] It should be noted that after the output shaft of the engine 10 is drivingly connected with the first ring gear 323, the torque output by the first planetary gear set 32 is (k+1) / k relative to the torque output by the engine 10, and in the related art, the output shaft of the engine 10 is connected with the planet carrier, and the torque output by the planetary gear set is k / (k+1), and the hybrid power driving system provided by the embodiment of the present application can greatly improve the torque output by the first planetary gear set 32, thereby improving the wheel end torque transmitted to the vehicle wheel.

[0063] In addition, in the embodiment of the present application, the first ring gear 323 and the first sun gear 324 in the first planetary gear set 32 correspond to the input end of the mode switching module 30, and the first carrier 321 corresponds to the output end of the mode switching module 30.

[0064] In addition, in some embodiments, the mode switching module 30 further comprises a first clutch 33, and any two of the first carrier 321, the first ring gear 323 and the first sun gear 324 are connected to two ends of the first clutch 33 respectively. Through such a setting, when the first clutch 33 is engaged, the two connected to the first clutch 33 can rotate synchronously.

[0065] Specifically, the first carrier 321 and the first ring gear 323 can be connected to two ends of the first clutch 33 respectively, that is, the first carrier 321 is connected to one end of the first clutch 33, and the first ring gear 323 is connected to the other end of the first clutch 33; the first carrier 321 and the first sun gear 324 can also be connected to two ends of the first clutch 33; the first ring gear 323 and the first sun gear 324 can also be connected to two ends of the first clutch 33.

[0066] In addition, in the embodiment of the present application, the combined action of the unit 31 and the first clutch 33 is used to realize the mode switching of the hybrid drive system, such as the switching between the pure electric mode, the series-parallel mode, the engine direct drive mode, the EVT mode and the like.

[0067] In addition, when any two of the first carrier 321, the first ring gear 323 and the first sun gear 324 are connected to two ends of the first clutch 33 respectively, at this time, the connection can be achieved by welding, can also be achieved by spline connection, and can also be achieved by integral connection through an integral process. For example, the first ring gear 323 and one end of the first clutch 33 are connected by welding, the other end of the first clutch 33 and the first sun gear 324 are connected by welding, for another example, the first ring gear 323 and one end of the first clutch 33 are connected by spline, the other end of the first clutch 33 and the first sun gear 324 are connected by spline, for another example, the first ring gear 323 and one end of the first clutch 33 are integrally connected by an integral process, the other end of the first clutch 33 and the first sun gear 324 are integrally connected by an integral process.

[0068] In addition, in the embodiment of the present application, by setting the first clutch 33, the first clutch 33 functions to realize the overall rotation of the first planetary gear set 32, that is, through the first clutch 33, the overall rotation of the first planetary gear set 32 can be realized, a fixed speed ratio is achieved, which is used to realize the series-parallel mode and the EVT mode, can fully exert the performance of the engine, makes the engine at a more optimal working point, and can improve the power performance and the economy.

[0069] In addition, in the embodiment of the present application, the first motor 20 has a rotor and a rotor shaft, and the rotor of the first motor 20 is connected with the first sun gear 324 through the rotor shaft. The rotor shaft of the first motor 20 can be connected with the first sun gear 324 through welding, of course, the rotor shaft of the first motor 20 can also be connected with the first sun gear 324 through other ways, for example, the rotor shaft of the first motor 20 is connected with the first sun gear 324 through spline, for another example, the rotor shaft of the first motor 20 is integrally connected with the first sun gear 324 through an integral process. The embodiment of the present application does not limit this.

[0070] In addition, in the embodiment of the present application, the first planetary gear 322 can be connected on the first planet carrier 321 through a planet pin shaft and a needle bearing, so as to realize the rotation connection between the first planetary gear 322 and the first planet carrier 321.

[0071] In addition, in some embodiments, as shown in Figure 5 and Figure 8 The coupling unit 31 can include one of a brake and a clutch. That is, the coupling unit 31 can be a brake, and the coupling unit 31 can also be a clutch. Thus, by setting the coupling unit 31 as a brake or a clutch, the selection range of the coupling unit 31 can be larger, and by setting the coupling unit 31 as a brake or a clutch, different settings can be made for the brake or the clutch, so that the connection relationship between the first planetary gear set 32 and the engine 10 is different, and the mode switching of the hybrid power driving system is realized.

[0072] In addition, in the embodiment of the present application, when the coupling unit 31 includes a brake, one end of the brake is connected with the output shaft of the engine 10, and the other end of the brake is fixed. The output shaft of the engine 10 is connected with the first ring gear 323. When the coupling unit 31 includes a clutch, one end of the clutch is connected with the output shaft of the engine 10, and the other end of the clutch is connected with the first ring gear 323. The output shaft of the engine 10 is selectively connected with the first ring gear 323 through the clutch.

[0073] When the coupling unit 31 includes a brake, the coupling unit 31 is equivalent to a brake. At this time, one end of the brake can be connected with the output shaft of the engine 10, and the other end of the brake can be fixed. Since the output shaft of the engine 10 is also connected with the first ring gear 323, when the brake is disconnected, the output shaft of the engine 10 can directly output torque to the first ring gear 323, that is, drive the first ring gear 323 to rotate. When the brake is engaged, the brake can brake the output shaft of the engine 10, so that the output shaft cannot rotate, and thus the output shaft of the engine 10 cannot output torque to the first ring gear 323, that is, the output shaft of the engine 10 cannot drive the first ring gear 323 to rotate.

[0074] When the coupling unit 31 comprises a clutch, the coupling unit 31 is equivalent to the clutch, and one end of the clutch is connected with the output shaft of the engine 10, and the other end of the clutch is connected with the first ring gear 323, so that when the clutch is engaged, the output shaft of the engine 10 is equivalent to being in driving connection with the first ring gear 323 through the clutch, so that the output shaft of the engine 10 can output torque to the first ring gear 323, i.e., the first ring gear 323 is driven to rotate, and when the clutch is disengaged, the clutch can disconnect the driving connection between the output shaft of the engine 10 and the first ring gear 323, so that the output shaft of the engine 10 cannot output torque to the first ring gear 323, i.e., the output shaft of the engine 10 cannot drive the first ring gear 323 to rotate.

[0075] In the embodiment of the present application, when the coupling unit 31 is a brake, the brake is engaged to lock the first ring gear 323, and the speed ratio at this time is K+1; when the coupling unit 31 is a clutch, the clutch is engaged to make the first planetary gear set 32 rotate as a whole, and the speed ratio at this time is 1. Therefore, compared with the case where the coupling unit 31 is a clutch, when the coupling unit 31 is a brake, the hybrid power driving system can have greater low-speed torque output in the pure electric mode, and as a preferred solution, the coupling unit 31 can be a brake.

[0076] It should be noted that the hybrid power driving system can have a housing, and the mode switching module 30 can be located in the housing, so that when the coupling unit 31 is a brake, the other end of the brake can be fixed to the inner wall of the housing to achieve fixation of the other end of the brake.

[0077] In addition, in the embodiment of the present application, when the coupling unit 31 is a brake, the output shaft of the engine 10 is connected with the first ring gear 323, and the output shaft of the engine 10 and the first ring gear 323 can be connected by welding, spline connection or integral connection. For this, the embodiment of the present application is not limited here.

[0078] In addition, when the coupling unit 31 is a brake, one end of the brake can be connected with the output shaft of the engine 10 by welding, spline connection or integral connection. For this, the embodiment of the present application is not limited here. In addition, the other end of the brake can be connected with the inner wall of the housing by welding, spline connection or integral connection. For this, the embodiment of the present application is not limited here.

[0079] In addition, in some embodiments, as shown in Figure 5 the first clutch 33 at least partially overlaps the coupling unit 31 in the axial direction, i.e., the first clutch 33 and the coupling unit 31 are nested; or, as shown in Figure 1 and Figure 8As shown, the first motor 20 at least partially overlaps the first planetary gear set 32, the first clutch 33 and the at least one of the combination unit 31 in the axial direction. Through such arrangement, the space of the hybrid power driving system in the axial direction can be saved, and the first clutch 33 and the combination unit 31 can also share the same cooling and lubricating oil path. That is, by nesting the first clutch 33 and the combination unit 31, the structure of the hybrid power driving system can be more compact, and the cooling and lubricating system can be simplified by sharing the same cooling and lubricating oil path, thereby saving cost. The axial direction refers to the axial direction of the output shaft of the engine 10, i.e., the extension direction of the output shaft of the engine 10.

[0080] It should be noted that when the combination unit 31 is a brake, the first clutch 33 and the brake are nested, and the first clutch 33 and the brake can be located in the same plane in the radial direction. When the combination unit 31 is a clutch, the first clutch 33 and the clutch are nested, and the first clutch 33 and the clutch can be located in the same plane in the radial direction. The radial direction refers to the radial direction of the output shaft of the engine 10, i.e., the direction of the diameter of the output shaft of the engine 10.

[0081] In addition, in some embodiments, as shown in Figure 2 and Figure 6 The hybrid power driving system can further include a gear shifting module 40. The gear shifting module 40 includes an input shaft 41 and a gear shifting unit 42 connected to the input shaft 41. The input shaft 41 is connected to the first carrier 321, and the gear shifting unit 42 is used to realize the switching between different gears of the hybrid power driving system.

[0082] Since the gear shifting unit 42 is connected to the input shaft 41, and the input shaft 41 is connected to the first carrier 321, the gear shifting module 40 is connected to the mode switching module 30. Through the combination of the gear shifting module 40 and the mode switching module 30, the hybrid power driving system can realize multiple gear outputs in different modes, thereby improving the power performance, economy and driving comfort of the vehicle.

[0083] In addition, in the embodiments of the present application, the input shaft 41 and the first carrier 321 can be connected by welding, spline connection or integral connection, etc. For this, the embodiments of the present application are not limited here.

[0084] In addition, in some embodiments, as shown in Figure 2 , Figure 10 and Figure 12As shown, the gear switching unit 42 includes a second planetary gear set 421, a second clutch 422, and a second brake 423. The second planetary gear set 421 includes a second carrier 4211, second planetary gears 4212, a second ring gear 4213, and a second sun gear 4214. The second planetary gears 4212 are rotatably mounted to the second carrier 4211, and the second planetary gears 4212 are engaged with the second sun gear 4214 and the second ring gear 4213, respectively. One end of the second clutch 422 is connected to the input shaft 41, and the other end of the second clutch 422 is connected to the second ring gear 4213, or one end of the second clutch 422 is connected to the input shaft 41, and the other end of the second clutch 422 is connected to the second sun gear 4214. One end of the second brake 423 is connected to the second ring gear 4213, and the other end of the second brake 423 is fixed, or one end of the second brake 423 is connected to the second sun gear 4214, and the other end of the second brake 423 is fixed. By providing the second planetary gear set 421, the second clutch 422, and the second brake 423, the second planetary gear set 421, the second clutch 422, and the second brake 423 can be combined to form a structure that can output two gears by switching the engagement and disengagement states of the second clutch 422 and the second brake 423, and the second planetary gear set 421, the second clutch 422, and the second brake 423 can also simulate one gear, thereby increasing the number of gears of the hybrid powertrain system.

[0085] It should be noted that the connection of one end of the second clutch 422 to the input shaft 41 can refer to the connection of the input shaft 41 to the first carrier 321, which will not be described again here. The connection of the other end of the second clutch 422 to the second carrier 4211 or the second sun gear 4214 can also refer to the connection of the input shaft 41 to the first carrier 321, which will not be described again here. The rotational connection of the second planetary gears 4212 to the second carrier 4211 can refer to the connection of the first planetary gears 322 to the first carrier 321, which will not be described again here. The connection of one end of the second brake 423 to the second ring gear 4213 or the second sun gear 4214 can refer to the connection of one end of the brake to the output shaft of the engine 10 when the combination unit 31 is a brake, which will not be described again here. The fixation of the other end of the second brake 423 can refer to the fixation of the other end of the brake when the combination unit 31 is a brake, which will not be described again here.

[0086] In addition, in some embodiments, as Figure 5 and Figure 11As shown, the first motor 20 includes a rotor with a receiving cavity, in which at least a portion of the first planetary gear set 32 ​​and the second planetary gear set 421 are placed; or, at least a portion of the first planetary gear set 32 ​​and the second clutch 422 are placed in the receiving cavity. This arrangement is equivalent to nesting the first planetary gear set 32, the second planetary gear set 421, and the first motor 20, thereby saving space and allowing them to reuse the same cooling and lubrication oil circuit. In other words, by placing both the first planetary gear set 32 ​​and the second planetary gear set 421 in the receiving cavity, the hybrid drive system can be made more compact, and the shared cooling and lubrication oil circuit simplifies the cooling and lubrication system, saving costs.

[0087] It should be noted that the first planetary gear set 32 ​​and / or the second planetary gear set 421 may be located in the same plane as the rotor of the first motor 20 in the radial direction.

[0088] Additionally, in some embodiments, such as Figures 9 to 12 As shown, the second clutch 422 and the second brake 423 at least partially overlap in the axial direction. This arrangement allows the second clutch 422 and the second brake 423 to nest together, saving space and enabling them to reuse the same cooling and lubrication oil passage. In other words, by nesting the second clutch 422 and the second brake 423, the hybrid drive system can be made more compact, and the shared cooling and lubrication oil passage simplifies the cooling and lubrication system, saving costs.

[0089] It should be noted that the second clutch 422 and the second brake 423 can be located on the same plane in the radial direction.

[0090] Additionally, in some embodiments, such as Figure 5 As shown, the rotor has a receiving cavity in which at least a portion of the first planetary gear set 32 ​​and the second clutch 422 are located. This arrangement effectively nests the first planetary gear set 32, the second clutch 422, and the first motor 20, saving space and allowing them to reuse the same cooling and lubrication circuit. In other words, by placing at least a portion of the first planetary gear set 32 ​​and the second clutch 422 within the receiving cavity, the hybrid drive system becomes more compact, and the cooling and lubrication system is simplified by reusing the same cooling and lubrication circuit, thus saving costs.

[0091] It should be noted that the first planetary gear set 32 ​​and / or the second clutch 422 may be located in the same plane as the rotor of the first motor 20 in the radial direction.

[0092] Additionally, in some embodiments, such as Figure 2 As shown, the gear shifting unit 42 also includes a third planetary gear set 424, a third clutch 425, and a third brake 426. The third planetary gear set 424 includes a third planet carrier 4241, third planetary gears 4242, a third ring gear 4243, and a third sun gear 4244. The third planetary gears 4242 are rotatably mounted on the third planet carrier 4241 and mesh with the third sun gear 4244 and the third ring gear 4243, respectively. One end of the third clutch 425 is connected to the input shaft 41, and the other end of the third clutch 425 is connected to the third planet carrier 4241. One end of the third brake 426 is connected to the third sun gear 4244, and the other end of the third brake 426 is fixed. The second ring gear 4213 is connected to the third planet carrier 4241, and the third ring gear 4243 is connected to the second planet carrier 4211. By configuring the second planetary gear set 421, the second clutch 422, the second brake 423, the third clutch 425, the third brake 426, and the third planetary gear set 424, the engagement and disengagement states of the second clutch 422, the second brake 423, the third brake 426, and the third clutch 425 can switch, thereby enabling the structure formed by the combination of the second planetary gear set 421, the second clutch 422, the second brake 423, the third planetary gear set 424, the third clutch 425, and the third brake 426 to achieve four-speed output. Furthermore, the second planetary gear set 421, the second clutch 422, the second brake 423, the third planetary gear set 424, the third clutch 425, and the third brake 426 can also simulate two gears, thus increasing the number of gears in the hybrid drive system.

[0093] It should be noted that the way one end of the third clutch 425 is connected to the input shaft 41 can be referenced to the way the input shaft 41 is connected to the first planetary carrier 321, and will not be repeated here. The way the other end of the third clutch 425 is connected to the third planetary carrier 4241 can also be referenced to the way the input shaft 41 is connected to the first planetary carrier 321, and will not be repeated here. The way the third planetary gear 4242 is rotatably connected to the third planetary carrier 4241 can be referenced to the way the first planetary gear 322 is connected to the first planetary carrier 321, and will not be repeated here. The way one end of the third brake 426 is connected to the third sun gear 4244 can be referenced to the way one end of the brake is connected to the output shaft of the engine 10 when the coupling unit 31 is a brake, and will not be repeated here. The way the third brake 426 is fixed can be referenced to the way the other end of the brake is fixed when the coupling unit 31 is a brake, and will not be repeated here.

[0094] Of course, in the embodiments of the present application, the gear shifting unit 42 can also include other numbers of planetary rows, other numbers of clutches and other numbers of brakes, for example, the gear shifting unit 42 includes 3 planetary rows, 3 clutches and 3 brakes, so that the gear shifting unit 42 can realize 6 gear outputs, and for another example, the gear shifting unit 42 includes 4 planetary rows, 4 clutches and 4 brakes, so that the gear shifting unit 42 can realize 8 gear outputs.

[0095] In addition, in some embodiments, as shown in Figure 1 and Figure 5 At least part of the first planetary row 32 and the second clutch 422 are located in the rotor accommodating cavity, i.e., the two at least partially overlap the motor in the axial direction; the second brake 423 at least partially overlaps the second planetary row 421 in the axial direction, or the second brake 423 at least partially overlaps the planetary row group composed of the second planetary row 421 and the third planetary row 424 in the axial direction.

[0096] In addition, in some embodiments, as shown in Figure 2 and Figure 5 The third clutch 425 at least partially overlaps the third brake 426 in the axial direction, i.e., the two are nested. Through such a setting, the space of the hybrid power driving system in the axial direction can be saved, and the third clutch 425 and the third brake 426 can also be multiplexed with the same cooling and lubricating oil path. That is, by nesting the third clutch 425 and the third brake 426, not only can the structure of the hybrid power driving system be more compact, but also the cooling and lubricating system can be simplified by multiplexing the same cooling and lubricating oil path, saving costs.

[0097] It should be noted that the third clutch 425 and the third brake 426 can be located in the same plane in the radial direction.

[0098] In addition, in some embodiments, the second planetary row 421 and the third planetary row 424 at least partially overlap the combining unit 31 in the axial direction, i.e., the three are nested. Through such a setting, the second planetary row 421, the third planetary row 424 and the combining unit 31 can be nested with each other, thereby saving space, and the second planetary row 421 and the third planetary row 424 can also be nested with the combining unit 31 to multiplex the same cooling and lubricating oil path. That is, by nesting the second planetary row 421 and the third planetary row 424 with the combining unit 31, not only can the structure of the hybrid power driving system be more compact, but also the cooling and lubricating system can be simplified by multiplexing the same cooling and lubricating oil path, saving costs.

[0099] In addition, in some embodiments, the second clutch 422 and the second brake 423 can be located in the same plane in the radial direction.

[0100] In addition, when the combination unit 31 is a brake, at this time, the second planetary gear set 421, the third planetary gear set 424 and the brake are nested; when the combination unit 31 is a clutch, at this time, the second planetary gear set 421, the third planetary gear set 424 and the clutch are nested.

[0101] In addition, in some embodiments, as shown in Figure 2 and Figure 9 , the gear shifting unit 42 can further include a gear output gear 427; when the gear shifting unit 42 includes the second planetary gear set 421, the second clutch 422 and the second brake 423, at this time, the gear output gear 427 is connected with the second carrier 4211 or the second ring gear 4213 of the second planetary gear set 421; when the gear shifting unit 42 includes the second planetary gear set 421, the second clutch 422, the second brake 423, the third planetary gear set 424, the third clutch 425 and the third brake 426, at this time, the gear output gear 427 is connected with the second carrier 4211 and the third ring gear 4243.

[0102] In addition, in some embodiments, as shown in Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the hybrid drive system can further comprise an output module 50 for outputting power of the hybrid drive system. The output module 50 comprises a gear set and a differential, the gear set is drivingly connected between the gear output gear 427 and the differential, and the output half shaft of the differential is used to connect the wheels. When the hybrid drive system is arranged in a transverse direction in the vehicle, that is, the mode switching module 30 and the gear switching module 40 are arranged along the width direction of the vehicle, the width direction of the vehicle is the direction from the driver's seat to the front passenger's seat; when the hybrid drive system is arranged in a longitudinal direction in the vehicle, that is, the mode switching module 30 and the gear switching module 40 are arranged along the length direction of the vehicle, the length direction of the vehicle is the direction from the front wheel to the rear wheel. Specifically, when the hybrid drive system is arranged in a transverse direction in the vehicle, the gear set comprises a first gear 51, a second gear 52 and a third gear 53, the first gear 51 is engaged with the gear output gear 427, the first gear 51 is connected with the second gear 52, and the second gear 52 is engaged with the third gear 53; when the hybrid drive system is arranged in a longitudinal direction in the vehicle, the gear set comprises a first gear 51, a second gear 52, a third gear 53, a fourth gear 54 and a fifth gear 55, the first gear 51 is engaged with the gear output gear 427, the first gear 51 is connected with the second gear 52, the second gear 52 is engaged with the fourth gear 54, the fourth gear 54 is connected with the fifth gear 55, and the fifth gear 55 is engaged with the third gear 53, and the third gear 53 and the fifth gear 55 are helical gears. It should be noted that the third gear 53 is connected with the differential.

[0103] It should be noted that the connection mode of the first gear 51 and the second gear 52, and the connection mode of the fourth gear 54 and the fifth gear 55 can refer to the connection mode of the input shaft 41 and the first planet carrier 321, which will not be described here.

[0104] In addition, in the embodiment of the present application, the hybrid drive system can further comprise a second motor 001, one of the first motor 20 and the second motor 001 is arranged in the front drive system, and the other is arranged in the rear drive system. When the hybrid drive system is used in the vehicle, the front drive system is arranged at the front of the vehicle and is used to drive the front wheels of the vehicle, and the rear drive system is arranged at the rear of the vehicle and is used to drive the rear wheels of the vehicle. By arranging the second motor 001 and arranging one of the first motor 20 and the second motor 001 in the front drive system and the other in the rear drive system, the front drive, rear drive or four-wheel drive mode of the vehicle can be realized.

[0105] In addition, in the embodiment of the present application, as Figure 11As shown, when the combination unit 31 is a clutch, the gear shifting module 40 includes the second planetary gear set 421, the second clutch 422, and the second brake 423, and the hybrid power drive system includes the second motor 001, at this time, the hybrid power drive system can have different modes and gears, including a pure electric mode (two gears), a series-parallel drive mode (two gears), an engine direct drive mode (three gears), a power split (EVT) mode (two gears), a parking power generation mode, and a range extending mode; which can be shown in Table 1 as follows:

[0106] Table 1

[0107]

[0108]

[0109] It should be noted that in Table 1, B represents the second brake 423, C represents the second clutch 422, C3 represents the first clutch 33, and C0 represents that the combination unit 31 is a clutch. In addition, the black dot in each square represents that the component is combined. In addition, K1 and K2 respectively represent the characteristic parameters of the first planetary gear set 32 and the second planetary gear set 421.

[0110] In addition, in the embodiments of the present application, as shown in Figure 12 As shown, when the combination unit 31 is a clutch, the gear shifting module 40 includes the second planetary gear set 421, the second clutch 422, and the second brake 423, and the hybrid power drive system includes the second motor 001, at this time, the hybrid power drive system can have different modes and gears, including a pure electric mode (two gears), a series-parallel drive mode (two gears), an engine direct drive mode (three gears), a power split (EVT) mode (two gears), a parking power generation mode, and a range extending mode; which can be shown in Table 1 as follows:

[0111] Table 2

[0112]

[0113]

[0114] It should be noted that in Table 2, B 3 represents that the combination unit 31 is a brake.

[0115] In addition, in the embodiments of the present application, as shown in Figure 9As shown, when the engagement unit 31 is a clutch, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, and a second brake 423, and the hybrid drive system includes a second motor 001, the hybrid drive system can have different modes and gears, including pure electric mode (two gears), series-parallel hybrid drive mode (two gears), engine direct drive mode (three gears), EVT mode (two gears), parking generator mode, and range-extended rear-wheel drive mode; as shown in Table 3 below:

[0116] Table 3

[0117]

[0118] Additionally, in the embodiments of this application, such as Figure 10 As shown, when the coupling unit 31 is a brake, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, and a second brake 423, and the hybrid drive system includes a second motor 001, the hybrid drive system can have different modes and gears, including pure electric mode (two gears), parallel hybrid drive mode (two gears), engine direct drive mode (three gears), EVT mode (two gears), parking generator mode, and range-extended rear-wheel drive mode; as shown in Table 4 below:

[0119] Table 4

[0120]

[0121] Additionally, in the embodiments of this application, such as Figure 5 As shown, when the coupling unit 31 is a brake, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, a second brake 423, a third planetary gear set 424, a third clutch 425, and a third brake 426, and the hybrid drive system includes a second motor 001, the hybrid drive system can have different modes and gears, including pure electric mode (four gears), parallel hybrid drive mode (four gears), engine direct drive mode (six gears), EVT mode (four gears), parking generator mode, and range-extended rear-wheel drive mode; as shown in Table 5 below:

[0122] Table 5

[0123]

[0124]

[0125]

[0126] It should be noted that in Table 5, B1 represents the second brake 423, C1 represents the second clutch 422, B2 represents the third brake 426, C2 represents the third clutch 425, C3 represents the first clutch 33, and B3 represents that the combination unit 31 is a brake.

[0127] In addition, in the embodiment of the present application, as shown in Figure 8 When the combination unit 31 is a clutch, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, a second brake 423, a third planetary gear set 424, a third clutch 425, and a third brake 426, and the hybrid power drive system includes a second motor 001, the hybrid power drive system can have different modes and gears, including a pure electric mode (four gears), a series-parallel drive mode (four gears), an engine direct drive mode (six gears), an EVT mode (four gears), a parking power generation mode, and a range-extended rear-drive mode; which can be shown in Table 6 as follows:

[0128] Table 6

[0129]

[0130]

[0131]

[0132] In addition, in the embodiment of the present application, when the combination unit 31 is a brake, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, a second brake 423, a third planetary gear set 424, a third clutch 425, and a third brake 426, and the hybrid power drive system includes a second motor 001, the vehicle can be in different modes, so the power transmission path in mode switching is also different, as follows:

[0133] When the vehicle is in a pure electric mode, at this time, the engine 10 is not working, the first motor 20 is output to the gear shifting module 40 after one-stage reduction by the first planetary gear set 32, and the power transmission path of the mode switching module 30 is: first motor 20→first sun gear 324→first planet gear 322→first planet carrier 321.

[0134] When the vehicle is in a parking power generation mode, at this time, the engine 10 is working, the first clutch 33 is engaged, so that the first planetary gear set 32 rotates as a whole, and the power transmission path of the mode switching module 30 is: engine 10→first planetary gear set 32→first motor 20→battery. The battery is the battery of the vehicle. In this mode, the clutches and brakes in the gear shifting module 40 are all disconnected, and the second motor 001 is not working.

[0135] When the vehicle is in the extended range mode, at this time, the power transmission path of the mode switching module 30 is basically the same as that in the parking power generation mode; the difference is that the power generation power is used to drive the second motor 001, and the surplus electric energy is used to charge the battery. The power transmission path of the hybrid power is: engine 10→first planetary gear set 32→first motor 20→second motor 001.

[0136] When the vehicle is in the hybrid / enginedirect drive mode, at this time, the power transmission path of the mode switching module 30 is basically the same as that in the parking power generation mode and the extended range rear drive mode; the difference is that the power is output to the gear shifting module 40, and different hybrid gears are formed by the combination of the brake and the clutch of the gear shifting module 40; in this mode, the first motor 20 plays a role in peak shaving, that is, when the wheel end power of the vehicle is insufficient, the power of the battery is supplemented to the wheel end through the first motor 20; when the battery is discharged and the engine 10 operating point power is surplus, part of the power of the engine 10 can be generated through the first motor 20 to the second motor 001 or to the battery. The main power flow path is: engine 10→first planetary gear set 32→gear shifting module.

[0137] When the vehicle is in the EVT mode, that is, the vehicle is in the power split mode, at this time, the EVT mode can be power generation EVT or power consumption driving EVT, and the power generation EVT is used at low speed and power shortage, and the power consumption driving EVT is used at high speed and full power of the engine 10 optimal fuel consumption operating point;

[0138] In this mode, the power transmission path of the mode switching module 30 has two paths, as follows:

[0139] ①engine 10→first ring gear 323→first planetary gear 322→first planetary carrier 321;

[0140] This path is followed by the gear shifting module 40, and different EVT gears are formed by the combination of the brake and the clutch of the gear shifting module 40;

[0141] ②For power generation EVT:

[0142] (1)engine 10→first ring gear 323→first planetary gear 322→first sun gear 324→first motor 20; this path generates power, and the generated power is used to charge the second motor 001;

[0143] (2)first motor 20→first sun gear 324→first planetary gear 322→first planetary carrier 321;

[0144] When the vehicle is in the EVT mechanical point direct drive mode, which is a special case of the EVT mode, the motor is braked to form a direct drive gear in the vicinity of the mechanical point of the EVT mode; the path is followed by the gear shifting module, and different simulated direct drive gears are formed through the combination of the brake and the clutch of the gear shifting module.

[0145] In this mode, the power transmission path of the mode switching module 30 is: engine 10→first ring gear 323→first planet gear 322→first carrier 321.

[0146] In addition, in the embodiment of the application, when the combination unit 31 is a brake, the gear shifting module 40 includes a second planetary gear set 421, a second clutch 422, a second brake 423, a third planetary gear set 424, a third clutch 425, and a third brake 426, and the hybrid power driving system includes a second motor 001, the vehicle can be in different modes, so the power transmission path in the gear shifting module 40 is also different, as follows:

[0147] When in first gear, the power transmission path is: input shaft 41→second clutch 422→second sun gear 4214→second planet gear 4212→second carrier 4211→gear output gear 427;

[0148] When in second gear, the power transmission path is: input shaft 41→second clutch 422→second sun gear 4214→second planet gear 4212→second carrier 4211→gear output gear 427, and input shaft 41→second clutch 422→second sun gear 4214→second planet gear 4212→second ring gear 4213→third carrier 4241→third planet gear 4242→third ring gear 4243→gear output gear 427;

[0149] When in third gear, the power transmission path is: input shaft 41→second planetary gear set 421 and third planetary gear set 424 rotate as a whole→gear output gear 427, wherein the second clutch 422 and the third clutch 425 are engaged at the same time, the second planetary gear set 421 and the third planetary gear set 424 rotate as a whole, realizing a direct gear.

[0150] When in fourth gear, the power transmission path is: input shaft 41→third clutch 425→second carrier 4211→third planet gear 4242→third ring gear 4243→gear output gear 427.

[0151] The hybrid power driving system provided by the embodiment of the application has the following effects:

[0152] 1. The output shaft of the engine 10 is connected with the first ring gear 323 by connecting the first motor 20 with the first sun gear 324, so that the engine 10 and the first motor 20 can both transmit torque to the first planetary gear set 32, realizing the hybrid power output for the vehicle, and the output shaft of the engine 10 is connected with the first ring gear 323, so that the torque output by the first planetary gear set 32 is large, when the hybrid power driving system is applied to the vehicle, the wheel end torque of the vehicle is large, so that the vehicle can better cope with the working conditions such as off-road climbing or escaping, and compared with the prior art that uses a hydraulic torque converter to amplify the engine torque when the vehicle starts or is at low speed, the embodiment of the application can still realize the low-speed large-torque output of the engine without the hydraulic torque converter, which can reduce weight and cost, simplify the hydraulic system and save space.

[0153] 2. By axially nesting at least two of the first motor 20, the first planetary gear set 32, the second planetary gear set 421, the third planetary gear set 424, the first clutch 33, the combination unit 31, the second clutch 422, the third clutch 425, the second brake 423 and the third brake 426, not only the axial space of the hybrid power driving system can be saved, facilitating its arrangement in the vehicle, but also at least two components can reuse the same cooling and lubricating oil path, so as to simplify the cooling and lubricating system and save cost. For example, when the gear shifting module 40 includes the second planetary gear set 421, the second clutch 422 and the second brake 423, the hybrid power driving system can be simplified to three cooling and lubricating oil paths; when the gear shifting module 40 includes the second planetary gear set 421, the second clutch 422, the second brake 423, the third planetary gear set 424, the third clutch 425 and the third brake 426, the hybrid power driving system can be simplified to four cooling and lubricating oil paths.

[0154] The embodiment of the application provides a vehicle including the hybrid power driving system in any one of the above embodiments.

[0155] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0156] While the embodiments of the application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hybrid drive system characterized by comprising: The hybrid power drive system comprises: an engine, a first motor and a mode switching module; the mode switching module comprises a combination unit and a first planetary gear set, the first planetary gear set comprises a first planetary carrier, a first planetary gear, a first ring gear and a first sun gear, the first planetary gear is rotatably installed on the first planetary carrier, and the first planetary gear is in mesh with the first sun gear and the first ring gear respectively; the first motor is connected with the first sun gear, and the engine is connected with the first ring gear and the combination unit.

2. The hybrid drive system of claim 1, wherein, The mode switching module further comprises a first clutch, and any two of the first planetary carrier, the first ring gear and the first sun gear are connected with two ends of the first clutch respectively.

3. The hybrid drive system of claim 1, wherein, The combination unit is a brake, one end of the brake is connected with an output shaft of the engine, and the other end of the brake is fixed, and the output shaft of the engine is connected with the first ring gear.

4. The hybrid drive system of claim 1, wherein, The combination unit is a clutch, one end of the clutch is connected with an output shaft of the engine, and the other end of the clutch is connected with the first ring gear, and the output shaft of the engine is selectively connected with the first ring gear through the clutch.

5. The hybrid drive system of claim 2, wherein, The first clutch and the combination unit at least partially overlap in the axial direction. Or, the first motor and at least one of the first planetary gear set, the first clutch and the combination unit at least partially overlap in the axial direction.

6. The hybrid drive system of claim 1, wherein, The hybrid power drive system further comprises a gear switching module; The gear switching module comprises an input shaft and a gear switching unit, the gear switching unit is connected to the input shaft, and the input shaft is connected with the first planetary carrier, and the gear switching unit is used to realize the switching of different gears of the hybrid power drive system.

7. The hybrid drive system of claim 6, wherein The gear switching unit comprises a second planetary gear set, a second clutch and a second brake; The second planetary gear set comprises a second planetary carrier, a second planetary gear, a second ring gear and a second sun gear, the second planetary gear is rotatably installed on the second planetary carrier, and the second planetary gear is in mesh with the second sun gear and the second ring gear respectively; One end of the second clutch is connected with the input shaft, and the other end of the second clutch is connected with the second ring gear. Or, one end of the second clutch is connected with the input shaft, and the other end of the second clutch is connected with the second sun gear. One end of the second brake is connected with the second ring gear, and the other end of the second brake is fixed. Or, one end of the second brake is connected with the second sun gear, and the other end of the second brake is fixed.

8. The hybrid drive system of claim 7, wherein, The first motor comprises a rotor, the rotor has a containing cavity, and at least part of the first planetary gear set and the second planetary gear set is placed in the containing cavity. Or, at least part of the first planetary gear set and the second clutch is placed in the containing cavity.

9. The hybrid drive system of claim 7, wherein, The second clutch and the second brake at least partially overlap in the axial direction.

10. The hybrid drive system of claim 7, wherein, The gear switching unit further comprises a third planetary gear set, a third clutch and a third brake; The third planetary gear set comprises a third carrier, a third planetary gear, a third ring gear and a third sun gear, the third planetary gear is rotatably mounted on the third carrier, and the third planetary gear is engaged with the third sun gear and the third ring gear respectively; One end of the third clutch is connected with the input shaft, and the other end of the third clutch is connected with the third carrier; One end of the third brake is connected with the third sun gear, and the other end of the third brake is fixed; The second ring gear is connected with the third carrier, and the third ring gear is connected with the second carrier.

11. The hybrid drive system of claim 10, wherein, The third clutch and the third brake at least partially overlap in the axial direction.

12. The hybrid drive system of claim 10, wherein, The second brake at least partially overlaps with at least one of the second planetary gear set and the third planetary gear set in the axial direction.

13. The hybrid drive system of claim 10, wherein, The gear shifting unit further comprises a gear output gear; The gear output gear is connected with the second carrier or the second ring gear; Or, the gear output gear is connected with the second carrier and the third ring gear.

14. The hybrid drive system of claim 13, wherein, The hybrid power drive system further comprises an output module, the output module comprises a gear set and a differential, and the gear set is drivingly connected between the gear output gear and the differential.

15. The hybrid drive system of claim 1, wherein, The hybrid power drive system further comprises a second motor; One of the first motor and the second motor is arranged in a front drive system, and the other is arranged in a rear drive system.

16. A vehicle characterized by comprising: The vehicle comprises the hybrid power drive system according to any one of claims 1-15.

Images