Hybrid power driving system and vehicle

Abstract

The invention belongs to the technical field of vehicles, and particularly relates to a hybrid power driving system and a vehicle. The planetary gear mechanism comprises a gear ring shaft, an inner gear ring connected with the gear ring shaft, a sun gear located in the center of the inner gear ring, a plurality of planet gears meshed between the inner gear ring and the sun gear, and a planet carrier rotationally connected with the planet gears; the first motor is in transmission connection with the sun gear; the engine is in transmission connection with the planet carrier through a crankshaft; the first clutch is connected with a cylinder body of the engine and the crankshaft, so that the crankshaft and the cylinder body are combined or disconnected; the second clutch is connected with the gear ring shaft and the outer gear ring, so that the gear ring shaft and the outer gear ring are combined or disconnected; the third clutch is connected with the gearbox shell and the gear ring shaft, so that the gear ring shaft and the gearbox shell are combined or disconnected; the differential mechanism is in transmission connection with the outer gear ring; the second motor is in transmission connection with the differential mechanism.

Description

TECHNICAL FIELD

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

[0002] With the increasing awareness of energy saving and environmental protection in today's society, new energy vehicle technology has developed rapidly. Hybrid vehicle driving technology is the core stage of the development process of new energy vehicles. Improving fuel economy and reducing emissions are important issues faced by hybrid technology.

[0003] In the related art, the hybrid power driving system has multiple modes, but the switching between multiple modes is complex. SUMMARY

[0004] To solve the above technical problems, the present application provides a hybrid power driving system and a vehicle, which aims to at least solve the technical problem of complex switching between multiple modes of the hybrid power driving system.

[0005] The technical scheme of the present application is as follows:

[0006] A hybrid power driving system, comprising: a planetary gear mechanism, including a ring gear shaft, an inner ring gear connected with the ring gear shaft, a sun gear located at the center of the inner ring gear, a plurality of planetary gears meshing between the inner ring gear and the sun gear, and a planetary carrier rotatingly connecting the plurality of planetary gears; a first motor in transmission connection with the sun gear; an engine in transmission connection with the planetary carrier through a crankshaft; a first clutch connected with a cylinder body of the engine and the crankshaft to combine or disconnect the crankshaft and the cylinder body; a second clutch connected with the ring gear shaft and an outer ring gear to combine or disconnect the ring gear shaft and the outer ring gear; a third clutch connected with a transmission case and the ring gear shaft to combine or disconnect the ring gear shaft and the transmission case; a differential in transmission connection with the outer ring gear; and a second motor in transmission connection with the differential.

[0007] In some embodiments, the second clutch and the third clutch are arranged in parallel along the axial direction of the sun gear.

[0008] In some embodiments, the hybrid power driving system further comprises a connecting piece connected with the second clutch and the outer ring gear.

[0009] In some embodiments, the connecting piece comprises a first connecting portion connected with the second clutch, and a second connecting portion connected with the outer ring gear and connected with the first connecting portion at an angle.

[0010] In some embodiments, the hybrid drive system further comprises: a first connecting shaft, one end of which is connected with the crankshaft, and the other end of which is connected with the planetary carrier; a second connecting shaft, one end of which is connected with the first motor, and the other end of which is connected with the sun gear through the ring gear shaft; and a third connecting shaft, one end of which is connected with the second motor, and the other end of which is connected with the differential transmission.

[0011] In some embodiments, the first connecting shaft is coaxial with the second connecting shaft, and the third connecting shaft is parallel to the first connecting shaft.

[0012] In some embodiments, the first connecting shaft is connected with the crankshaft through a torsional damper.

[0013] In some embodiments, the hybrid drive system further comprises: an intermediate shaft, which is in transmission with the differential, the second motor and the outer ring gear.

[0014] In some embodiments, the axis of the intermediate shaft is parallel to the axis of the sun gear.

[0015] Based on the same inventive concept, the application also provides a vehicle comprising the hybrid drive system.

[0016] The application has at least the following beneficial effects:

[0017] The planetary gear mechanism comprises a ring gear shaft, an inner ring gear connected with the ring gear shaft, a sun gear located at the center of the inner ring gear, a plurality of planetary gears meshed between the inner ring gear and the sun gear, and a planetary carrier rotatingly connected with the plurality of planetary gears; the first motor is in transmission with the sun gear; the engine is in transmission with the planetary carrier through the crankshaft; the first clutch is connected with the cylinder block and the crankshaft of the engine to combine or disconnect the crankshaft and the cylinder block; the second clutch is connected with the ring gear shaft and the outer ring gear to combine or disconnect the ring gear shaft and the outer ring gear; the third clutch is connected with the transmission case and the ring gear shaft to combine or disconnect the ring gear shaft and the transmission case; the differential is in transmission with the outer ring gear; and the second motor is in transmission with the differential.

[0018] Therefore, when the engine is directly driven, the second clutch combines the ring gear shaft and the outer ring gear to achieve the same speed of the inner ring gear and the outer ring gear, the third clutch disconnects the transmission case and the ring gear shaft, the first clutch disconnects the crankshaft and the cylinder block, the crankshaft of the engine transmits power to the planetary carrier, the planetary carrier transmits power to the planetary gears, the planetary gears transmit power to the inner ring gear and the sun gear, the sun gear transmits power to the first motor to charge the battery, and the inner ring gear transmits power to the differential through the ring gear shaft, the second clutch and the outer ring gear to realize vehicle driving, thereby realizing power split of the engine, i.e., driving the engine while generating electricity.

[0019] When parallel driving is performed, on the basis of engine direct driving, the battery supplies power to the second motor to start the second motor, and the second motor transmits power to the differential to realize parallel driving. According to the driving condition of the vehicle, whether parallel driving is performed is selected to make the engine be at the optimal working power (i.e. the optimal fuel consumption point).

[0020] When first pure electric driving is performed, the second clutch disconnects the ring gear shaft and the outer ring gear, the third clutch connects the transmission case and the ring gear shaft, and the first clutch disconnects the crankshaft and the cylinder block, so that the engine and the first motor are disconnected from the differential, that is, the power of the engine and / or the first motor cannot be transmitted to the differential, while the battery supplies power to the second motor to start the second motor, and the second motor transmits power to the differential to realize first pure electric driving.

[0021] When second pure electric driving is performed, the second clutch connects the ring gear shaft and the outer ring gear, the first clutch connects the crankshaft and the cylinder block, and the third clutch disconnects the transmission case and the ring gear shaft, so that the engine is disconnected from the differential, that is, the power of the engine cannot be transmitted to the differential, and the battery supplies power to the first motor and the second motor to start the first motor and the second motor, the power of the first motor is transmitted to the differential through the sun gear, the planet gear, the inner ring gear, the ring gear shaft and the outer ring gear, and the power of the second motor is transmitted to the differential to realize second pure electric driving.

[0022] When series driving is performed, the second clutch disconnects the ring gear shaft and the outer ring gear, the third clutch connects the transmission case and the ring gear shaft, and the first clutch disconnects the crankshaft and the cylinder block, so that the engine and the first motor are disconnected from the differential, that is, the power of the engine and / or the first motor cannot be transmitted to the differential, the crankshaft of the engine transmits power to the planet carrier, the planet carrier transmits power to the planet gear, the planet gear transmits power to the inner ring gear and the sun gear, the sun gear transmits power to the first motor, the engine and the first motor generate electricity at a constant speed ratio to charge the battery, the battery supplies power to the second motor to start the second motor, and the second motor transmits power to the differential to realize series driving.

[0023] When brake energy recovery is performed, the second clutch disconnects the ring gear shaft and the outer ring gear, the third clutch connects the transmission case and the ring gear shaft, and the first clutch disconnects the crankshaft and the cylinder block, so that the engine and the first motor are disconnected from the differential, that is, the power of the engine and / or the first motor cannot be transmitted to the differential, when the vehicle is in braking or coasting condition, the kinetic energy of the wheels is transmitted to the second motor through the differential, the torque of the second motor is reversed to charge the battery to realize brake energy recovery.

[0024] When parking power generation is performed, the third clutch combines the gear case with the ring gear shaft to lock the ring gear shaft, so that the engine and the first motor are disconnected from the differential, that is, the power of the engine and / or the first motor is not transmitted to the differential, the second motor is not started, the crankshaft of the engine transmits power to the planet carrier, the planet carrier transmits power to the planet gear, the planet gear transmits power to the inner ring gear and the sun gear, the sun gear transmits power to the first motor to charge the battery.

[0025] When driving power generation is performed, the second clutch combines the ring gear shaft and the outer ring gear to achieve the same speed of the inner ring gear and the outer ring gear, the third clutch disconnects the gear case from the ring gear shaft, the first clutch disconnects the crankshaft from the cylinder block, the crankshaft of the engine transmits power to the planet carrier, the planet carrier transmits power to the planet gear, the planet gear transmits power to the inner ring gear and the sun gear, the sun gear transmits power to the first motor to charge the battery, and the inner ring gear transmits power to the differential through the ring gear shaft, the second clutch, and the outer ring gear, achieving driving power generation.

[0026] When the engine is started at parking, the second clutch combines the ring gear shaft and the outer ring gear to achieve the same speed of the inner ring gear and the outer ring gear, the third clutch disconnects the gear case from the ring gear shaft, the first clutch disconnects the crankshaft from the cylinder block, and the battery supplies power to the first motor to start the first motor, and the power of the first motor is transmitted to the engine through the sun gear, the planet gear, the planet carrier, and the crankshaft to drive the engine.

[0027] The application uses a planetary gear mechanism, a first clutch, a second clutch, and a third clutch to achieve series driving, parallel driving, power split, first pure electric driving, second pure electric driving, braking energy recovery, driving power generation, parking power generation, and parking engine starting. Only the disconnection or combination of the first clutch, the second clutch, and the third clutch can achieve the switching of the driving mode, and the mode switching is simple. Moreover, without synchronizer, shift hub, shift motor, and other mechanisms, the overall structure of the hybrid power driving system is more compact, the system is simplified, the cost is reduced, the axial size of the hybrid power driving system is shortened, and the arrangement and mounting are facilitated.

[0028] The first motor of the application can generate power and drive, participates in driving when the power demand is large, effectively reduces the specifications of the second motor, and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 Structure diagram of a hybrid drive system according to some embodiments;

[0031] Figure 2 Structure diagram of a connection of a hybrid drive system according to some embodiments.

[0032] In the drawings:

[0033] Planetary gear mechanism 10, ring gear shaft 11, inner ring gear 12, sun gear 13, planet gears 14, planet carrier 15, outer ring gear 16; first electric motor 20; engine 30, crankshaft 31; first clutch 40; second clutch 50; third clutch 60; differential 70; second electric motor 80; connection 90, first connection portion 91, second connection portion 92; first connection shaft 100; second connection shaft 110; third connection shaft 120; torsional damper 130; intermediate shaft 140. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0035] It should be noted that all the directionality indications in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directionality indications also change accordingly.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0038] The present application will be described below in conjunction with the accompanying drawings and specific embodiments:

[0039] The hybrid drive system and vehicle provided by the embodiment can at least solve the technical problem of complex switching between multiple modes of the hybrid drive system to some extent.

[0040] Figure 1 The structure diagram of the hybrid drive system of some embodiments. In combination with Figure 1 , the hybrid drive system of the embodiment comprises a planetary gear mechanism 10, a first motor 20, an engine 30, a first clutch 40, a second clutch 50, a third clutch 60, a differential 70 and a second motor 80. The planetary gear mechanism 10 comprises a ring gear shaft 11, an inner ring gear 12 connected with the ring gear shaft 11, a sun gear 13 located at the center of the inner ring gear 12, a plurality of planetary gears 14 meshing between the inner ring gear 12 and the sun gear 13, and a planetary carrier 15 rotatingly connected with the plurality of planetary gears 14. The first motor 20 is in driving connection with the sun gear 13. The engine 30 is in driving connection with the planetary carrier 14 through a crankshaft 31. The first clutch 40 is connected with the cylinder body of the engine 30 and the crankshaft 31, so as to combine or disconnect the crankshaft 31 with the cylinder body. The second clutch 50 is connected with the ring gear shaft 11 and an outer ring gear 16, so as to combine or disconnect the ring gear shaft 11 with the outer ring gear 16. The third clutch 60 is connected with the transmission case and the ring gear shaft 11, so as to combine or disconnect the ring gear shaft 11 with the transmission case. The differential 70 is in driving connection with the outer ring gear 16. The second motor 80 is in driving connection with the differential 70.

[0041] Since the planetary gear mechanism 10 comprises a ring gear shaft 11, an inner ring gear 12 connected with the ring gear shaft 11, a sun gear 13 located in the center of the inner ring gear 12, a plurality of planetary gears 14 meshed between the inner ring gear 12 and the sun gear 13, and a planetary gear carrier 15 rotationally connected with the plurality of planetary gears 14; the first motor 20 is in driving connection with the sun gear 13; the engine 30 is in driving connection with the planetary gear carrier through a crankshaft 31; the first clutch 40 is connected with the cylinder body and the crankshaft 31 of the engine 30 to make the crankshaft 31 combined with or disconnected from the cylinder body; the second clutch 50 is connected with the ring gear shaft 11 and the outer ring gear 16 to make the ring gear shaft 11 combined with or disconnected from the outer ring gear 16; the third clutch 60 is connected with the transmission case and the ring gear shaft 11 to make the ring gear shaft 11 combined with or disconnected from the transmission case; the differential 70 is in driving connection with the outer ring gear 16; and the second motor 80 is in driving connection with the differential 70.

[0042] Therefore, when the engine 30 is directly driven, the second clutch 50 makes the ring gear shaft 11 and the outer ring gear 16 combined, the inner ring gear 12 and the outer ring gear 16 rotate at the same speed, the third clutch 60 makes the transmission case disconnected from the ring gear shaft 11, the first clutch 40 makes the crankshaft 31 disconnected from the cylinder body, the crankshaft 31 of the engine 30 transmits power to the planetary gear carrier 15, the planetary gear carrier 15 transmits power to the planetary gears 14, the planetary gears 14 transmit power to the inner ring gear 12 and the sun gear 13, the sun gear 13 transmits power to the first motor 20 to charge the battery, and the inner ring gear 12 transmits power to the differential 70 through the ring gear shaft 11, the second clutch 50 and the outer ring gear 16 to realize vehicle driving, realizing power split of the engine 30, that is, realizing driving and vehicle driving at the same time.

[0043] When parallel driving is performed, on the basis of the engine 30 being directly driven, the battery supplies power to the second motor 80 to start the second motor 80, and the second motor 80 transmits power to the differential 70 to realize parallel driving. According to the driving condition of the vehicle, it is selected whether to perform parallel driving, so that the engine 30 is in the best working power (that is, the optimal fuel consumption point).

[0044] When the first pure electric driving is performed, the second clutch 50 makes the ring gear shaft 11 and the outer ring gear 16 disconnected, the third clutch 60 makes the transmission case combined with the ring gear shaft 11, and the first clutch 40 makes the crankshaft 31 disconnected from the cylinder body, so that the engine 30 and the first motor 20 are disconnected from the differential 70, that is, the power of the engine 30 and / or the first motor 20 will not be transmitted to the differential 70, at the same time, the battery supplies power to the second motor 80 to start the second motor 80, and the second motor 80 transmits power to the differential 70 to realize the first pure electric driving.

[0045] In the second pure electric drive, the second clutch 50 combines the ring gear shaft 11 and the outer ring gear 16, the first clutch 40 combines the crankshaft 31 and the cylinder block, the third clutch 60 disconnects the transmission housing and the ring gear shaft 11, so that the engine 30 is disconnected from the differential 70, that is, the power of the engine 30 cannot be transmitted to the differential 70, the battery supplies power to the first motor 20 and the second motor 80 to start the first motor 20 and the second motor 80, the power of the first motor 20 is transmitted to the differential 70 through the sun gear 13, the planetary gear 14, the inner ring gear 12, the ring gear shaft 11 and the outer ring gear 16, and at the same time, the power of the second motor 80 is transmitted to the differential 70 to realize the second pure electric drive.

[0046] In the series drive, the second clutch 50 disconnects the ring gear shaft 11 and the outer ring gear 16, the third clutch 60 combines the transmission housing and the ring gear shaft 11, and the first clutch 40 disconnects the crankshaft 31 and the cylinder block, so that the engine 30 and the first motor 20 are disconnected from the differential 70, that is, the power of the engine 30 and / or the first motor 20 cannot be transmitted to the differential 70, the crankshaft 31 of the engine 30 transmits power to the planetary carrier 15, the planetary carrier 15 transmits power to the planetary gear 14, the planetary gear 14 transmits power to the inner ring gear 12 and the sun gear 13, the sun gear 13 transmits power to the first motor 20, the engine 30 and the first motor 20 generate electricity at a constant speed ratio to charge the battery, the battery supplies power to the second motor 80 to start the second motor 80, and the second motor 80 transmits power to the differential 70 to realize the series drive.

[0047] In the brake energy recovery, the second clutch 50 disconnects the ring gear shaft 11 and the outer ring gear 16, the third clutch 60 combines the transmission housing and the ring gear shaft 11, and the first clutch 40 disconnects the crankshaft 31 and the cylinder block, so that the engine 30 and the first motor 20 are disconnected from the differential 70, that is, the power of the engine 30 and / or the first motor 20 cannot be transmitted to the differential 70, when the vehicle is in braking and coasting conditions, the kinetic energy of the wheels is transmitted to the second motor 80 through the differential 70, the torque of the second motor 80 is reversed to charge the battery, and the brake energy recovery is realized.

[0048] In the parking power generation, the third clutch 60 combines the transmission housing and the ring gear shaft 11 to lock the ring gear shaft 11, so that the engine 30 and the first motor 20 are disconnected from the differential 70, that is, the power of the engine 30 and / or the first motor 20 cannot be transmitted to the differential 70, the second motor 80 is not started, the crankshaft 31 of the engine 30 transmits power to the planetary carrier 15, the planetary carrier 15 transmits power to the planetary gear 14, the planetary gear 14 transmits power to the inner ring gear 12 and the sun gear 13, the sun gear 13 transmits power to the first motor 20, so that the first motor 20 charges the battery.

[0049] In the driving power generation, the second clutch 50 combines the ring gear shaft 11 and the outer ring gear 16, the third clutch 60 disconnects the transmission housing and the ring gear shaft 11, the first clutch 40 disconnects the crankshaft 31 and the cylinder block, the crankshaft 31 of the engine 30 transmits power to the planetary carrier 15, the planetary carrier 15 transmits power to the planetary gear 14, the planetary gear 14 transmits power to the inner ring gear 12 and the sun gear 13, the sun gear 13 transmits power to the first motor 20 to charge the battery, and the inner ring gear 12 transmits power to the differential 70 through the ring gear shaft 11, the second clutch 50 and the outer ring gear 16, thereby realizing driving power generation.

[0050] In the parking engine starting, the second clutch 50 combines the ring gear shaft 11 and the outer ring gear 16, the third clutch 60 disconnects the transmission housing and the ring gear shaft 11, the first clutch 40 disconnects the crankshaft 31 and the cylinder block, the battery supplies power to the first motor 20 to start the first motor 20, and the power of the first motor 20 is transmitted to the engine 30 through the sun gear 13, the planetary gear 14, the planetary carrier 15 and the crankshaft 31 to drive the engine 30.

[0051] The application uses a planetary gear mechanism 10, a first clutch 40, a second clutch 50 and a third clutch 60 to realize series driving, parallel driving, power split, first pure electric driving, second pure electric driving, braking energy recovery, driving power generation, parking power generation and parking engine starting, and only the disconnection or combination of the first clutch 40, the second clutch 50 and the third clutch 60 can realize the switching of the driving mode, and the mode switching is simple. Moreover, without synchronizer, shift hub, shift motor and other mechanisms, the overall structure of the hybrid power driving system is more compact, the system is simplified, the cost is reduced, the axial size of the hybrid power driving system is shortened, and the arrangement and mounting are facilitated.

[0052] The first motor 20 of the application can generate power and drive, participates in driving when the power demand is large, effectively reduces the specifications of the second motor 80, and reduces the cost.

[0053] A hybrid power driving system working state table, wherein 0 represents disconnection and 1 represents combination.

[0054]

[0055]

[0056] In some embodiments, the first clutch 40 comprises a first inner ring and a first outer ring, the first inner ring is connected with the crankshaft 31, and the first outer ring is connected with the cylinder block of the engine. When the first inner ring and the first outer ring are combined, the crankshaft 31 is locked, and when the first inner ring and the first outer ring are separated, the crankshaft 31 is disconnected with the cylinder block of the engine.

[0057] In some embodiments, the second clutch 40 comprises a second inner ring and a second outer ring, the second inner ring is connected with the ring gear shaft 11, and the second outer ring is connected with the outer ring gear 16. When the second inner ring and the second outer ring are combined, the ring gear shaft 11 is combined with the outer ring gear 16, and when the second inner ring and the second outer ring are separated, the ring gear shaft 11 is disconnected with the outer ring gear 16.

[0058] In some embodiments, the third clutch 40 comprises a third inner ring and a third outer ring, the third inner ring is connected with the transmission housing, and the third outer ring is connected with the ring gear shaft 11. When the third inner ring and the third outer ring are combined, the ring gear shaft 11 is locked, and when the third inner ring and the third outer ring are separated, the ring gear shaft 11 is disconnected with the transmission housing.

[0059] In some embodiments, the first clutch 40 and the second clutch 50 are both one-way clutches, which can be automatically controlled, and the third clutch 60 is an electromagnetic dog clutch, which can be controlled by a TUC (Transmission Control Unit), and the control is simple.

[0060] In combination Figure 1 In some embodiments, the second clutch 50 and the third clutch 60 are arranged in parallel along the axial direction of the sun gear 13, so as to facilitate the integrated design of the second clutch 50 and the third clutch 60, so as to achieve higher integration and smaller axial size, so as to further reduce the axial size of the hybrid power driving system.

[0061] Figure 2 The structure diagram of the connecting piece of the hybrid power driving system of some embodiments. In combination Figure 2 In some embodiments, in order to facilitate the connection of the second clutch 50 and the outer ring gear 16, the hybrid power driving system further comprises a connecting piece 90. The connecting piece 90 is connected with the second clutch 50 and the outer ring gear 16, that is, the second clutch 50 can transmit power to the outer ring gear 16 through the connecting piece 90, without the need to increase the size of the second clutch 50, so as to facilitate the use of a smaller diameter second clutch 50, and reduce the cost of the second clutch 50.

[0062] In combination Figure 2In some embodiments, in order to realize the connection of the second clutch 50 and the outer ring gear 16, the connecting piece 90 comprises a first connecting part 91 and a second connecting part 92. The first connecting part 91 is connected with the second clutch 50. The second connecting part 92 is connected with the outer ring gear 16 and is connected with the first connecting part 91 at an angle.

[0063] The second clutch 50 can transmit power to the outer ring gear 16 through the first connecting part 91 and the second connecting part 92, without the need to increase the size of the second clutch 50, so as to adopt a smaller diameter of the second clutch 50 and reduce the cost of the second clutch 50.

[0064] In some embodiments, the included angle between the first connecting part 91 and the second connecting part 92 can be an acute angle, a right angle or an obtuse angle, and the first connecting part 91 and the second connecting part 92 are arranged vertically to facilitate power transmission.

[0065] In combination Figure 1 In some embodiments, in order to realize power transmission, the hybrid power driving system further comprises a first connecting shaft 100, a second connecting shaft 110 and a third connecting shaft 120. One end of the first connecting shaft 100 is connected with the crankshaft 31, and the other end is connected with the planetary carrier 15. One end of the second connecting shaft 110 is connected with the first motor 20, and the other end is connected with the sun gear 13 through the ring gear shaft 11. One end of the third connecting shaft 120 is connected with the second motor 80, and the other end is drivingly connected with the differential 70.

[0066] The power of the crankshaft 31 can be transmitted to the planetary carrier 15 through the first connecting shaft 100, the power of the sun gear 13 can be transmitted to the first motor 20 through the second connecting shaft 110, the power of the first motor 20 can be transmitted to the sun gear 13 through the second connecting shaft 110, and the power of the second motor 80 can be transmitted to the differential 70 through the third connecting shaft 120.

[0067] In combination Figure 1 In some embodiments, in order to facilitate the arrangement of the first connecting shaft 100, the second connecting shaft 110 and the third connecting shaft 120, the first connecting shaft 100 and the second connecting shaft 110 are coaxially arranged, so that the first connecting shaft 100 and the second connecting shaft 110 share the same axis, eliminating the radial offset therebetween and reducing the redundant space in the axial length direction, and the third connecting shaft 120 is parallel to the first connecting shaft 100 to avoid the risk of interference caused by cross layout, while utilizing the planar space for layered arrangement.

[0068] The crankshaft 31 generates periodic torsional vibration under the action of combustion explosion and reciprocating inertial force. If the vibration is directly transmitted to the first connecting shaft 100, gear meshing impact, transmission belt flutter or motor rotor resonance will be caused. In some embodiments, in order to improve the NVH (Noise, Vibration, Harshness) performance, the first connecting shaft 100 is connected with the crankshaft 31 through a torsional damper 130. The torsional damper 130 absorbs vibration energy through elastic elements (such as rubber, spring) and damping elements (such as silicone oil), attenuates the torsional vibration amplitude to an allowable range, improves the NVH, and at the same time, through elastic buffering and damping attenuation, the torque transmission is smoother, and the impact and jerk are reduced.

[0069] In combination Figure 1 In some embodiments, in order to realize power transmission, the hybrid power driving system further comprises: an intermediate shaft 140. The intermediate shaft 140 is in transmission connection with the differential 70, the second motor 80 and the outer ring gear 16. The power of the outer ring gear 16 can be transmitted to the differential 70 through the intermediate shaft 140, and the power of the second motor 80 can be transmitted to the differential 70 through the intermediate shaft 140, so as to realize vehicle driving.

[0070] In combination Figure 1 In some embodiments, in order to facilitate arrangement, the axis of the intermediate shaft 140 is parallel to the axial direction of the sun gear 13, so as to avoid interference risk caused by cross layout, and at the same time, the planar space is arranged in layers.

[0071] Based on the same inventive concept, the application also proposes a vehicle which adopts the hybrid power driving system. The specific structure of the hybrid power driving system is referred to the above embodiments. Since all the technical solutions of the above embodiments are adopted, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, which will not be described here one by one.

[0072] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship 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 do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0073] In the description of the application, unless otherwise clearly indicated and limited in context, "on", "over", and "on top of" of a first feature on a second feature can include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them. Also, "on", "over", and "on top of" of a first feature on a second feature include the first feature being directly above and obliquely above the second feature, or just indicating that the first feature is horizontally higher than the second feature. "Under", "below", and "underneath" of a first feature on a second feature include the first feature being directly below and obliquely below the second feature, or just indicating that the first feature is horizontally lower than the second feature.

[0074] In the description of the application, reference to terms such as "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Also, the description of a particular feature, structure, material, or characteristic in relation to an embodiment or example does not indicate that such feature is indispensable to the embodiment or example. In addition, different embodiments or examples described in the specification can be combined and combined in any suitable manner.

[0075] Although preferred embodiments of the application have been described, those of ordinary skill in the art can make additional changes and modifications thereto without departing from the spirit and scope of the application. Therefore, the appended claims are intended to cover all such changes and modifications that fall within the scope of the application.

[0076] Obviously, various modifications and changes can be made to the present application by those of ordinary skill in the art without departing from the spirit and scope of the application. Thus, it is intended that the present application cover the modifications and changes of this application, or its scope, as far as they come within the scope of the appended claims and their equivalents.

Claims

1. A hybrid power drive system, characterized in that, include: A planetary gear mechanism includes a gear ring shaft, an internal gear ring connected to the gear ring shaft, a sun gear located at the center of the internal gear ring, a plurality of planet gears meshing between the internal gear ring and the sun gear, and a planet carrier rotatably connecting the plurality of planet gears; The first motor is connected to the sun gear drive; The engine is connected to the planetary gear carrier via a crankshaft. A first clutch is connected to the cylinder block and the crankshaft of the engine to engage or disengage the crankshaft from the cylinder block; The second clutch is connected to the gear ring shaft and the outer gear ring to engage or disengage the gear ring shaft from the outer gear ring. The third clutch is connected to the gearbox housing and the gear ring shaft to engage or disengage the gear ring shaft from the gearbox housing; The differential is connected to the external gear ring drive; The second motor is connected to the differential drive.

2. The hybrid drive system according to claim 1, characterized in that, Along the axial direction of the sun gear, the second clutch and the third clutch are arranged side by side at intervals.

3. The hybrid drive system according to claim 1, characterized in that, The hybrid drive system also includes: The connecting element is connected to the second clutch and the outer gear ring.

4. The hybrid drive system according to claim 3, characterized in that, The connector includes: The first connecting part is connected to the second clutch; The second connecting part is connected to the external gear ring and is connected at an angle to the first connecting part.

5. The hybrid drive system according to any one of claims 1-4, characterized in that, The hybrid drive system also includes: The first connecting shaft is connected at one end to the crankshaft and at the other end to the planetary gear carrier; The second connecting shaft has one end connected to the first motor and the other end passing through the gear ring shaft and connected to the sun gear. The third connecting shaft is connected to the second motor at one end and to the differential drive at the other end.

6. The hybrid drive system according to claim 5, characterized in that, The first connecting shaft is coaxial with the second connecting shaft, and the third connecting shaft is parallel to the first connecting shaft.

7. The hybrid drive system according to claim 5, characterized in that, The first connecting shaft is connected to the crankshaft via a torsional damper.

8. The hybrid drive system according to any one of claims 1-4, characterized in that, The hybrid drive system also includes: The intermediate shaft is connected to the differential, the second motor, and the external gear ring drive.

9. The hybrid drive system according to claim 8, characterized in that, The axis of the intermediate shaft is parallel to the axis of the sun gear.

10. A vehicle, characterized in that, Including the hybrid drive system as described in any one of claims 1-9.

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