Automobile hybrid power system and automobile

Abstract

The invention provides an automobile hybrid power system and an automobile, the automobile hybrid power system comprises a front driving force system, a rear driving force system and a power battery, the front driving force system comprises an engine, a first clutch, an input shaft gear, a front driving motor, a front driving differential component and a second clutch; the engine is connected with the first clutch, and the first clutch is connected with the front-drive motor through the input shaft gear. The input shaft gear is connected with the front-drive differential-reduction assembly, and the front-drive differential-reduction assembly is connected with a front wheel. The second clutch is arranged at a position between the first clutch and the front wheel; the rear driving force system comprises a rear driving motor and a rear driving differential reduction assembly. One end of the rear drive differential reduction assembly is connected with the rear drive motor, and the rear drive differential reduction assembly is connected with the rear wheel; the front-drive motor and the rear-drive motor are both connected with the power battery, so that series connection, parallel connection, front-drive braking energy recovery, range extension and pure electric drive modes of the engine and the front-drive motor are achieved, and the automobile enters different running modes.

Description

Technical Field

[0001] The invention belongs to the technical field of hybrid power systems, and in particular relates to a hybrid power system for an automobile and an automobile. Background Art

[0002] At present, the hybrid system of automobiles is a front-mounted front-wheel drive hybrid system, and its main structure is to arrange an engine and two motors (drive motor and generator) in the front drive. The engine consumes fuel and drives the generator to rotate through the first-stage gear transmission for charging, and the drive motor realizes pure electric drive through the second-stage gear reduction, or drives in parallel with the engine.

[0003] Existing automotive hybrid systems, due to layout space and structural reasons, generally use a single electric motor to drive, which has fewer achievable driving modes, lower fuel economy, and relatively weak power and handling. Summary of the invention

[0004] The present invention provides a hybrid power system for an automobile, so as to solve the problems that the existing hybrid power system can realize fewer driving modes, has lower fuel economy and poor power performance.

[0005] A hybrid vehicle system comprises a front driving force system, a rear driving force system and a power battery;

[0006] The front drive power system includes an engine, a first clutch, an input shaft gear, a front drive motor, a front drive differential assembly and a second clutch; the engine is connected to the first clutch, and the first clutch is connected to the front drive motor through the input shaft gear; the input shaft gear is connected to the front drive differential assembly, and the front drive differential assembly is connected to the front wheels; the second clutch is arranged between the first clutch and the front wheels;

[0007] The rear drive power system comprises a rear drive motor and a rear drive differential assembly; one end of the rear drive differential assembly is connected to the rear drive motor, and the rear drive differential assembly is connected to the rear wheels;

[0008] The front drive motor and the rear drive motor are both connected to the power battery.

[0009] Preferably, the automobile hybrid power system includes a plurality of driving modes, and the driving modes are any one of an engine direct drive mode, a front drive pure electric mode, a rear drive pure electric mode, a two-wheel drive parallel mode, a four-wheel drive parallel mode, a rear drive series mode, a four-wheel drive pure electric mode, a first braking recovery mode, a second braking recovery mode, and a parking power generation mode;

[0010] The engine direct drive mode is: the engine is in a working state, the first clutch is in a engaged state, the second clutch is in a engaged state, the front drive motor is in a non-working state, and the rear drive motor is in a non-working state;

[0011] The front-drive pure electric mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in an engaged state, the front-drive motor is in an operative state, and the rear-drive motor is in an inoperative state;

[0012] In the rear-drive pure electric mode: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a disconnected state, the front-drive motor is in an inoperative state, and the rear-drive motor is in an operative state;

[0013] The two-wheel drive parallel mode: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a connected state, the front drive motor is in a working state, and the rear drive motor is in a non-working state;

[0014] The four-wheel drive parallel mode: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a connected state, the front drive motor is in a working state, and the rear drive motor is in a working state;

[0015] The rear-drive series mode is: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a disconnected state, the front-drive motor is in a charging state, and the rear-drive motor is in a working state;

[0016] The four-wheel drive pure electric mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in an engaged state, the front drive motor is in an operational state, and the rear drive motor is in an operational state;

[0017] The first braking recovery mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a coupled state, the front drive motor is in a charging state, and the rear drive motor is in a charging state;

[0018] The second braking recovery mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a disconnected state, the front drive motor is in an inoperative state, and the rear drive motor is in a charging state;

[0019] The parking power generation mode is: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a disconnected state, the front drive motor is in a charging state, and the rear drive motor is in a non-working state.

[0020] Preferably, the front drive differential assembly comprises a front drive intermediate shaft gear, a front drive intermediate shaft differential driving gear, a front drive differential driving gear and a front drive differential driven gear;

[0021] The front drive intermediate shaft gear is meshed with the input shaft gear, the front drive intermediate shaft gear is connected with the front drive intermediate shaft differential drive gear, the front drive intermediate shaft differential drive gear is meshed with the front drive differential driving gear, the front drive differential driving gear is meshed with the front drive differential driven gear, the front drive differential driven gear is installed on the front wheel half shaft, and one of the front wheels is installed at each end of the front wheel half shaft.

[0022] Preferably, one end of the second clutch is connected to the front drive differential driven gear, and the other end of the second clutch is connected to the front drive differential driving gear.

[0023] Preferably, one end of the second clutch is connected to the front-wheel drive intermediate shaft gear, and the other end of the second clutch is connected to the front-wheel drive intermediate shaft differential drive gear.

[0024] Preferably, one end of the second clutch is connected to the front wheel half shaft, and the other end of the second clutch is connected to the front drive differential driven gear.

[0025] Preferably, the second clutch and the first clutch are arranged back-to-back, one end of the second clutch is connected to the input shaft gear, and the other end of the second clutch is connected to the front drive differential assembly.

[0026] Preferably, the second clutch is radially nested with the first clutch, one end of the second clutch is connected to the first clutch, and the other end of the second clutch is connected to the input shaft gear.

[0027] Preferably, the front driving power system further comprises a torsional damper, a first end of the torsional damper is connected to an output end of the engine, and a second end of the torsional damper is connected to an active end of the first clutch.

[0028] Preferably, the automobile hybrid power system further comprises a planetary gear assembly disposed between the input shaft gear and the front drive motor, the planetary gear assembly comprising a planet carrier, a planetary gear ring, a planetary gear and a sun gear;

[0029] The first end of the planetary carrier is connected to the input shaft gear, and a planetary wheel is arranged on the second end of the planetary carrier. The outer periphery of the planetary wheel is meshed with the planetary gear ring, and the inner side of the planetary wheel is meshed with the sun wheel, and the sun wheel is connected to the front drive motor.

[0030] Preferably, the rear drive differential assembly comprises a rear drive intermediate shaft gear, a rear drive intermediate shaft differential wheel driving gear, a rear drive differential driving gear and a rear drive differential driven gear;

[0031] The first end of the rear-drive intermediate shaft gear is connected to the rear-drive motor, the second end of the rear-drive intermediate shaft gear is connected to the rear-drive intermediate shaft differential reduction wheel driving gear, the rear-drive intermediate shaft differential reduction wheel driving gear is meshed with the rear-drive differential driving gear, the rear-drive differential driving gear is meshed with the rear-drive differential driven gear, the rear-drive differential driven gear is installed on the rear wheel half shaft, and one of the rear wheels is installed at each end of the rear wheel half shaft.

[0032] Preferably, the first clutch and the second clutch are hydraulic plate clutches or electromagnetic clutches.

[0033] A car comprises the above-mentioned car hybrid power system.

[0034] The present invention provides a hybrid vehicle system including a rear drive power system, a front drive power system and a power battery, wherein the front drive power system includes an engine, a first clutch, an input shaft gear, a front drive motor, a front drive differential assembly and a second clutch; the engine is connected to the first clutch, the first clutch is connected to the front drive motor through the input shaft gear, and the front drive motor is connected to the power battery; the input shaft gear is connected to the front drive differential assembly, and the front drive differential assembly is connected to the front wheels; the second clutch is arranged between the first clutch and the front wheels; the engine, the first clutch, the second clutch and the front drive motor cooperate to form different combinations by switching different working states, so as to realize series connection, parallel connection, front drive braking energy recovery, range extension and the like of the engine and the front drive motor. The pure electric drive mode enables the car to enter different driving modes. The front drive power system can be switched between electric drive and fuel drive according to different vehicle states, saving costs while having high fuel economy; the rear drive power system includes a rear drive motor and a rear drive differential assembly; the rear drive motor is connected to the power battery, one end of the rear drive differential assembly is connected to the rear drive motor, and the rear drive differential assembly is connected to the rear wheels. The rear drive motor can be set up in this way to realize the rear-wheel drive of the car through the rear drive differential assembly, and can realize series, parallel four-wheel drive, pure electric four-wheel drive and four-wheel drive brake energy recovery with the front drive power system, and can also disconnect the front drive power system to realize pure electric direct drive of the rear drive, and can also realize rear drive brake energy recovery, increase the driving mode of the car, and improve the handling and power of the whole vehicle.

[0035] In this embodiment, the hybrid power system of the automobile is based on the traditional fuel vehicle, and a front drive power system is arranged at the front drive of the automobile and a rear drive power system is arranged at the rear drive of the automobile to realize four-wheel drive. Under the requirements of the vehicle control system, through 50:50 load distribution, the front drive power system and the rear drive power system are driven simultaneously, so that the vehicle has the advantages of high fuel economy of traditional hybrid vehicles and improves the power and controllability of the vehicle; in some extreme rainy and snowy road conditions, it can also enhance the adhesion of the vehicle and make the vehicle have better passing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a first layout diagram of the automobile hybrid power system of the present invention;

[0037] Figure 2 It is a second arrangement diagram of the automobile hybrid power system in the present invention;

[0038] Figure 3 It is a third arrangement diagram of the automobile hybrid power system in the present invention;

[0039] Figure 4 It is a fourth arrangement diagram of the automobile hybrid power system of the present invention;

[0040] Figure 5 This is the fifth layout diagram of the automobile hybrid power system in the present invention.

[0041] Among them, 1. power battery; 2. engine; 3. first clutch; 4. input shaft gear; 5. front drive motor; 6. front drive differential assembly; 61. front drive intermediate shaft gear; 62. front drive intermediate shaft differential drive gear; 63. front drive differential driving gear; 64. front drive differential driven gear; 7. second clutch; 8. front wheel half shaft; 9. front wheel; 10. rear drive motor; 11. rear drive differential assembly; 111. rear drive intermediate shaft gear; 112. rear drive intermediate shaft differential wheel drive gear; 113. rear drive differential driving gear; 114. rear drive differential driven gear; 12. rear wheel half shaft; 13. rear wheel; 14. torsional damper; 15. planetary gear assembly; 151. planetary carrier; 152. planetary ring gear; 153. planetary gear; 154. sun gear. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] An embodiment of the present invention provides a hybrid power system for an automobile, referring to Figure 1-5 The automobile hybrid power system includes a front drive power system, a rear drive power system and a power battery 1; the front drive power system includes an engine 2, a first clutch 3, an input shaft gear 4, a front drive motor 5, a front drive differential assembly 6 and a second clutch 7; the engine 2 is connected to the first clutch 3, and the first clutch 3 is connected to the front drive motor 5 through the input shaft gear 4; the input shaft gear 4 is connected to the front drive differential assembly 6, and the front drive differential assembly 6 is connected to the front wheel 9; the second clutch 7 is arranged at a position between the first clutch 3 and the front wheel 9; the rear drive power system includes a rear drive motor 10 and a rear drive differential assembly 11, one end of the rear drive differential assembly 11 is connected to the rear drive motor 10, and the rear drive differential assembly 11 is connected to the rear wheel 13; the front drive motor 5 and the rear drive motor 10 are both connected to the power battery 1.

[0046] As an example, a hybrid vehicle system is introduced, which includes a rear drive power system, a front drive power system and a power battery 1, wherein the front drive power system includes an engine 2, a first clutch 3, an input shaft gear 4, a front drive motor 5, a front drive differential assembly 6 and a second clutch 7; the engine 2 is connected to the first clutch 3, the first clutch 3 is connected to the front drive motor 5 through the input shaft gear 4, and the front drive motor 5 is connected to the power battery 1; the input shaft gear 4 is connected to the front drive differential assembly 6, and the front drive differential assembly 6 is connected to the front wheel 9, and the second clutch 7 is arranged between the first clutch 3 and the front wheel 9, and the engine 2, the first clutch 3, the second clutch 7 and the front drive motor 5 cooperate to form different combinations by switching different working states, so as to realize series connection, parallel connection and front drive braking energy recovery of the engine 2 and the front drive motor 5. The electric drive mode can be adjusted to the range of 100,000 and 1000 km / h, which can realize the electric driving, fuel-assisted driving and pure electric driving modes, so that the car can enter different driving modes. The front drive power system can be switched between electric drive and fuel drive according to different states of the vehicle, which saves costs and has high fuel economy. The rear drive power system includes a rear drive motor 10 and a rear drive differential assembly 11; the rear drive motor 10 is connected to the power battery 1, one end of the rear drive differential assembly 11 is connected to the rear drive motor 10, and the rear drive differential assembly 11 is connected to the rear wheel 13. The rear drive motor 10 can realize the rear wheel drive of the car through the rear drive differential assembly 11, and can realize series and parallel four-wheel drive, pure electric four-wheel drive and four-wheel drive braking energy recovery with the front drive power system, and can also disconnect the front drive power system to realize pure electric direct drive of the rear drive, and can also realize rear drive braking energy recovery, increase the driving mode of the car, and improve the handling and power of the whole vehicle.

[0047] In this embodiment, the hybrid power system of the automobile is based on the traditional fuel vehicle, and a front drive power system is arranged at the front drive of the automobile and a rear drive power system is arranged at the rear drive of the automobile to realize four-wheel drive. Under the requirements of the vehicle control system, through 50:50 load distribution, the front drive power system and the rear drive power system are driven simultaneously, so that the vehicle has the advantages of high fuel economy of traditional hybrid vehicles and improves the power and controllability of the vehicle; in some extreme rainy and snowy road conditions, it can also enhance the adhesion of the vehicle and make the vehicle have better passing performance.

[0048] In one embodiment, referring to Figure 1-5 The automobile hybrid power system includes multiple driving modes, and the driving modes are any one of an engine direct drive mode, a front drive pure electric mode, a rear drive pure electric mode, a two-wheel drive parallel mode, a four-wheel drive parallel mode, a rear drive series mode, a four-wheel drive pure electric mode, a first braking recovery mode, a second braking recovery mode, and a parking power generation mode;

[0049] The engine direct drive mode is: the engine 2 is in a working state, the first clutch 3 is in a engaged state, the second clutch 7 is in a engaged state, the front drive motor 5 is in a non-working state, and the rear drive motor 10 is in a non-working state;

[0050] The front-drive pure electric mode is: the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in an engaged state, the front-drive motor 5 is in an operative state, and the rear-drive motor 10 is in an inoperative state;

[0051] Rear-drive pure electric mode: the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a disconnected state, the front-drive motor 5 is in an inoperative state, and the rear-drive motor 10 is in an operative state;

[0052] Two-wheel drive parallel mode: the engine 2 is in working state, the first clutch 3 is in engagement state, the second clutch 7 is in engagement state, the front drive motor 5 is in working state and the rear drive motor 10 is in non-working state;

[0053] Four-wheel drive parallel mode: the engine 2 is in working state, the first clutch 3 is in engagement state, the second clutch 7 is in engagement state, the front drive motor 5 is in working state and the rear drive motor 10 is in working state;

[0054] The rear-drive series mode is: the engine 2 is in working state, the first clutch 3 is in engagement state, the second clutch 7 is in disconnection state, the front-drive motor 5 is in charging state and the rear-drive motor 10 is in working state;

[0055] The four-wheel drive pure electric mode is: the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in an engaged state, the front drive motor 5 is in an operational state, and the rear drive motor 10 is in an operational state;

[0056] The first braking recovery mode is: the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a coupled state, the front drive motor 5 is in a charging state, and the rear drive motor 10 is in a charging state;

[0057] The second braking recovery mode is: the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a disconnected state, the front drive motor 5 is in an inoperative state, and the rear drive motor 10 is in a charging state;

[0058] The parking power generation mode is: the engine 2 is in a working state, the first clutch 3 is in a connected state, the second clutch 7 is in a disconnected state, the front drive motor 5 is in a charging state, and the rear drive motor 10 is in a non-working state.

[0059] As an example, the engine 2, the first clutch 3, the second clutch 7, the front drive motor 5 and the rear drive motor 10 cooperate to form different combinations by switching different working states, so as to realize the series connection, parallel connection, front drive braking energy recovery, range extension and pure electric drive mode of the engine 2 and the front drive motor 5, and can make the vehicle enter any one of the engine direct drive mode, front drive pure electric mode, rear drive pure electric mode, two-wheel drive parallel mode, four-wheel drive parallel mode, rear drive series mode, four-wheel drive pure electric mode, first brake recovery mode, second brake recovery mode and parking power generation mode;

[0060] When the vehicle is in the engine direct drive mode, the engine 2 is in the working state, the first clutch 3 is in the engaged state, the second clutch 7 is in the engaged state, the front drive motor 5 is in the non-working state, and the rear drive motor 10 is in the non-working state. The power of the engine 2 is not converted into electric power, but is directly driven, and the power is transmitted through the first clutch 3, the input shaft gear 4, the front drive differential assembly 6, the front wheel half shaft 8 and the front wheel 9;

[0061] When the vehicle is in the front-drive pure electric mode, the engine 2 is not working, the first clutch 3 is disconnected, the second clutch 7 is engaged, the front-drive motor 5 is working, and the rear-drive motor 10 is not working. The front-drive motor 5 drives and transmits power through the planetary gear assembly 15, the input shaft gear 4, the front-drive differential assembly 6, the front wheel half shaft 8, and the front wheel 9;

[0062] When the vehicle is in the rear-drive pure electric mode, the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a disconnected state, the front-drive motor 5 is in an inoperative state, and the rear-drive motor 10 is in an operative state. The rear-drive motor 10 drives and transmits power through the rear-drive differential assembly 11, the rear wheel axle 12, and the rear wheel 13.

[0063] When the vehicle is in the two-wheel drive parallel mode, the engine 2 is in the working state, the first clutch 3 is in the engaged state, the second clutch 7 is in the engaged state, the front drive motor 5 is in the working state and the rear drive motor 10 is in the non-working state, the engine 2 and the front drive motor 5 participate in the driving at the same time, are connected in parallel through the first clutch 3 and the planetary gear assembly 15, and transmit power through the input shaft gear 4, the front drive differential assembly 6, the front wheel half shaft 8 and the front wheel 9;

[0064] When the vehicle is in the four-wheel drive parallel mode, the engine 2 is in working state, the first clutch 3 is in the engaged state, the second clutch 7 is in the engaged state, the front drive motor 5 is in working state and the rear drive motor 10 is in working state, the engine 2, the front drive motor 5 and the rear drive motor 10 are driven simultaneously, the engine 2 and the front drive motor 5 are driven simultaneously through the first clutch 3 and the planetary gear assembly 15 in parallel, and the power is transmitted through the input shaft gear 4, the front drive differential assembly 6, the front wheel half shaft 8 and the front wheel 9, at the same time, the rear drive motor 10 is driven, and the power is transmitted through the rear drive differential assembly 11, the rear wheel half shaft 12 and the rear wheel 13, so that the front wheel 9 and the rear wheel 13 rotate simultaneously;

[0065] When the vehicle is in the rear-drive series mode, the engine 2 is in the working state, the first clutch 3 is in the engaged state, the second clutch 7 is in the disconnected state, the front-drive motor 5 is in the charging state and the rear-drive motor 10 is in the working state, the engine 2 drives the front-drive motor 5 to charge the power battery 1 through the first clutch 3, the input shaft gear 4 and the planetary gear assembly 15, and at the same time, the engine 2 transmits power through the first clutch 3, the input shaft gear 4, the front-drive differential assembly 6, the front wheel axle 8 and the front wheel 9; at the same time, the rear-drive motor 10 drives and transmits power through the rear-drive differential assembly 11, the rear wheel axle 12 and the rear wheel 13;

[0066] When the vehicle is in the four-wheel drive pure electric mode, the engine 2 is not working, the first clutch 3 is disconnected, the second clutch 7 is engaged, the front drive motor 5 is working and the rear drive motor 10 is working, the front drive motor 5 and the rear drive motor 10 are simultaneously involved in driving, the front drive motor 5 drives, and transmits power through the planetary gear assembly 15, the input shaft gear 4, the front drive differential assembly 6, the front wheel axle 8 and the front wheel 9; at the same time, the rear drive motor 10 drives, and transmits power through the rear drive differential assembly 11, the rear wheel axle 12 and the rear wheel 13;

[0067] When the vehicle is in the first braking recovery mode, the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a coupled state, the front drive motor 5 is in a charging state, and the rear drive motor 10 is in a charging state. The wheel-end braking force of the front wheel 9 charges the power battery 1 through the front wheel axle 8, the front drive differential assembly 6, the input shaft gear 4, the planetary gear assembly 15 and the front drive motor 5; the wheel-end braking force of the rear wheel 13 charges the power battery 1 through the rear wheel axle 12, the rear drive differential assembly 11 and the rear drive motor 10.

[0068] When the vehicle is in the second braking recovery mode, the engine 2 is in an inoperative state, the first clutch 3 is in a disconnected state, the second clutch 7 is in a disconnected state, the front drive motor 5 is in an inoperative state, and the rear drive motor 10 is in a charging state, the front drive power system is disconnected, and the wheel-end braking force of the rear wheel 13 charges the power battery 1 through the rear wheel half shaft 12, the rear drive differential assembly 11 and the rear drive motor 10;

[0069] When the vehicle is in parking power generation mode, the engine 2 is in working state, the first clutch 3 is in engagement state, the second clutch 7 is in disconnection state, the front drive motor 5 is in charging state and the rear drive motor 10 is in non-working state. This mode mainly exists when the vehicle is parked and powered, such as when waiting for a traffic light. The engine 2 only provides a charging function, the rear drive power system is disconnected, and the engine 2 drives the front drive motor 5 to charge the power battery 1 through the first clutch 3, the input shaft gear 4 and the planetary gear assembly 15;

[0070] In this embodiment, the front drive power system adopts a single-motor hybrid system, in which only one engine 2, one front drive motor 5 and two clutches are used. By controlling the on and off of the two clutches, various functions such as engine 2 direct drive, series, two-wheel drive parallel, front drive pure electric direct drive, and front drive brake energy recovery can be realized; the rear drive power system adopts a single motor drive, and in conjunction with the front drive power system, series, parallel four-wheel drive, pure electric four-wheel drive, and rear drive brake energy recovery can be realized; the front drive power system can also be disconnected to realize rear drive pure electric direct drive, and rear drive brake energy recovery can also be realized, thereby increasing the driving modes of the vehicle and improving the controllability and power of the vehicle. The hybrid power system of the vehicle can realize various driving modes of the vehicle through only one engine 2, two motors, two clutches and a set of planetary transmission systems, and the cost is much lower than other hybrid systems currently on the market that use three motors; during the vehicle switching process between multiple driving modes, the kinetic energy of the engine 2 and the electric energy are reasonably converted, so that the vehicle has both fuel economy and power.

[0071] In one embodiment, referring to Figure 1-5 The front driving power system further includes a torsional damper 14 , a first end of which is connected to an output end of the engine 2 , and a second end of which is connected to an active end of the first clutch 3 .

[0072] As an example, it is introduced that the front drive power system also includes a torsional damper 14, the first end of the torsional damper 14 is fixedly connected to the output end of the engine 2 by bolts, and the second end of the torsional damper 14 is connected to the active end of the first clutch 3 by a spline connection. When the engine 2 transmits power to the first clutch 3, the torsional stiffness between the engine 2 and the first clutch 3 can be reduced, the torsional impact load of the transmission system under unstable working conditions can be alleviated, and the engagement smoothness of the first clutch 3 can be improved.

[0073] In one embodiment, referring to Figure 1-5 The front drive differential assembly 6 includes a front drive intermediate shaft gear 61, a front drive intermediate shaft differential driving gear 62, a front drive differential driving gear 63 and a front drive differential driven gear 64; the front drive intermediate shaft gear 61 is meshed with the input shaft gear 4, the front drive intermediate shaft gear 61 is connected to the front drive intermediate shaft differential driving gear 62, the front drive intermediate shaft differential driving gear 62 is meshed with the front drive differential driving gear 63, the front drive differential driving gear 63 is meshed with the front drive differential driven gear 64, and the front drive differential driven gear 64 is installed on the front wheel half shaft 8, and a front wheel 9 is installed at each end of the front wheel half shaft 8.

[0074] As an example, a front drive differential assembly 6 is introduced, which includes a front drive intermediate shaft gear 61, a front drive intermediate shaft differential driving gear 62, a front drive differential driving gear 63 and a front drive differential driven gear 64. The front drive intermediate shaft gear 61 is meshed with the input shaft gear 4. The front drive intermediate shaft gear 61 and the front drive intermediate shaft differential driving gear 62 are fixedly connected on the intermediate shaft. The front drive intermediate shaft differential driving gear 62 is meshed with the front drive differential driving gear 63. The front drive differential driving gear 63 is meshed with the front drive differential driven gear 64. The front drive differential driven gear 64 is installed on the front wheel half shaft 8. A front wheel 9 is installed at each end of the front wheel half shaft 8. Such an arrangement can facilitate the power transmission of the engine 2 or the front drive motor 5 to the front drive differential assembly 6 through the input shaft gear 4, and finally to the front wheel 9.

[0075] In one embodiment, referring to Figure 1 One end of the second clutch 7 is connected to the front drive differential driven gear 64 , and the other end of the second clutch 7 is connected to the front drive differential driving gear 63 .

[0076] As an example, a first installation position of the second clutch 7 is introduced. The function of the first clutch 3 is to control whether the engine 2 is in an off-state or in an on-state. The function of the second clutch 7 is to control whether the working power transmitted by the engine 2 and the front drive motor 5 can be transmitted to the front wheels 9. One end of the second clutch 7 is connected to the front drive differential driven gear 64, and the other end of the second clutch 7 is connected to the front drive differential driving gear 63. By controlling the engagement or disconnection of the second clutch 7, it is possible to control whether the working power transmitted by the engine 2 and the front drive motor 5 can be transmitted to the front wheels 9 through the front drive differential driven gear 64.

[0077] In one embodiment, referring to Figure 2 One end of the second clutch 7 is connected to the front drive intermediate shaft gear 61 , and the other end of the second clutch 7 is connected to the front drive intermediate shaft differential drive gear 62 .

[0078] As an example, a second installation position of the second clutch 7 is introduced. The function of the first clutch 3 is to control whether the engine 2 is in an off-state or in an on-state. The function of the second clutch 7 is to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9. One end of the second clutch 7 is connected to the front-drive intermediate shaft gear 61, and the other end of the second clutch 7 is connected to the front-drive intermediate shaft differential drive gear 62. By controlling the engagement or disconnection of the second clutch 7, it is possible to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9 through the front-drive intermediate shaft gear 61.

[0079] In one embodiment, referring to Figure 3 One end of the second clutch 7 is connected to the front wheel half shaft 8, and the other end of the second clutch 7 is connected to the front drive differential driven gear 64.

[0080] As an example, a third installation position of the second clutch 7 is introduced. The function of the first clutch 3 is to control whether the engine 2 is in an off-state or in an on-state. The function of the second clutch 7 is to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9. One end of the second clutch 7 is connected to the front-wheel half-shaft 8, and the other end of the second clutch 7 is connected to the front-wheel differential driven gear 64. By controlling the engagement or disconnection of the second clutch 7, it is possible to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9 through the front-wheel half-shaft 8.

[0081] In one embodiment, referring to Figure 4 The second clutch 7 and the first clutch 3 are arranged back to back, one end of the second clutch 7 is connected to the input shaft gear 4, and the other end of the second clutch 7 is connected to the front drive intermediate shaft gear 61.

[0082] As an example, the fourth installation position of the second clutch 7 is introduced. The function of the first clutch 3 is to control whether the engine 2 is in an off-state or in an on-state. The function of the second clutch 7 is to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9. The second clutch 7 and the first clutch 3 are arranged back to back. One end of the second clutch 7 is connected to the input shaft gear 4, and the other end of the second clutch 7 is connected to the front-drive intermediate shaft gear 61. By controlling the engagement or disconnection of the second clutch 7, it is possible to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9 through the input shaft gear 4.

[0083] In one embodiment, referring to Figure 5 The second clutch 7 is radially nested with the first clutch 3 , one end of the second clutch 7 is connected to the first clutch 3 , and the other end of the second clutch 7 is connected to the input shaft gear 4 .

[0084] As an example, the fifth installation position of the second clutch 7 is introduced. The function of the first clutch 3 is to control whether the engine 2 is in an off-state or in an on-state. The function of the second clutch 7 is to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9. The second clutch 7 is radially nested with the first clutch 3. One end of the second clutch 7 is connected to the first clutch 3, and the other end of the second clutch 7 is connected to the input shaft gear 4. By controlling the engagement or disconnection of the second clutch 7, it is possible to control whether the working power transmitted by the engine 2 and the front-drive motor 5 can be transmitted to the front wheels 9 through the first clutch 3.

[0085] In this embodiment, the second clutch 7 is arranged on any part between the first clutch 3 and the front wheel 9 to achieve the same function; the position of the second clutch 7 is controlled to achieve the layout architecture of the switching hybrid power system; wherein, the second clutch 7 is arranged on the front drive differential driven gear 64; or, the second clutch 7 is arranged on the front drive intermediate shaft gear 61; or, the second clutch 7 is arranged on the front wheel half shaft 8; or, the second clutch 7 is arranged on the input shaft gear 4, and is arranged back to back with the first clutch 3; or, the second clutch 7 and the first clutch 3 are radially nested, and the second clutch 7 is arranged on the position of the part between the first clutch 3 and the front wheel 9 to achieve the above functions, and the position of the second clutch 7 can be selected to change the layout architecture of the hybrid power system. As the position of the second clutch 7 changes, five different hybrid power configurations can be provided, which improves the diversity of the layout architecture design of the automobile power system and facilitates the layout design of the automobile power system.

[0086] In one embodiment, referring to Figure 1-5 The automobile hybrid power system also includes a planetary gear assembly 15 arranged between the input shaft gear 4 and the front drive motor 5, and the planetary gear assembly 15 includes a planetary carrier 151, a planetary ring gear 152, a planetary wheel 153 and a sun wheel 154; the first end of the planetary carrier 151 is connected to the input shaft gear 4, and the second end of the planetary carrier 151 is provided with a planetary wheel 153, the outer periphery of the planetary wheel 153 is meshed with the planetary ring gear 152, and the inner side of the planetary wheel 153 is meshed with the sun wheel 154, and the sun wheel 154 is connected to the front drive motor 5.

[0087] As an example, the planetary gear assembly 15 includes a planetary carrier 151, a planetary ring gear 152, a planetary wheel 153 and a sun wheel 154. The first end of the planetary carrier 151 is connected to the input shaft gear 4, and the second end of the planetary carrier 151 is provided with a planetary wheel 153. The outer periphery of the planetary wheel 153 is meshed with the planetary ring gear 152, and the inner side of the planetary wheel 153 is meshed with the sun wheel 154. The sun wheel 154 is connected to the front drive motor 5. This arrangement can facilitate the power transmission of the front drive motor 5 to the front drive differential assembly 6 through the planetary wheel assembly 15 and the input shaft gear 4, and finally to the front wheel 9. At the same time, the engine 2 can also drive the front drive motor 5 to rotate through the input shaft gear 4 and the planetary wheel assembly 15 to charge the power battery 1, and the front wheel 9 can also drive the front drive motor 5 to rotate through the front drive differential assembly 6, the input shaft gear 4 and the planetary wheel assembly 15 to charge the power battery 1.

[0088] In one embodiment, referring to Figure 1-5 The rear drive differential assembly 11 includes a rear drive intermediate shaft gear 111, a rear drive intermediate shaft differential wheel driving gear 112, a rear drive differential driving gear 113 and a rear drive differential driven gear 114; the first end of the rear drive intermediate shaft gear 111 is connected to the rear drive motor 10, the second end of the rear drive intermediate shaft gear 111 is connected to the rear drive intermediate shaft differential wheel driving gear 112, the rear drive intermediate shaft differential wheel driving gear 112 is meshed with the rear drive differential driving gear 113, the rear drive differential driving gear 113 is meshed with the rear drive differential driven gear 114, and the rear drive differential driven gear 114 is installed on the rear wheel half shaft 12, and a rear wheel 13 is installed at each end of the rear wheel half shaft 12.

[0089] As an example, a rear drive differential assembly 11 is introduced, which includes a rear drive intermediate shaft gear 111, a rear drive intermediate shaft differential wheel driving gear 112, a rear drive differential driving gear 113 and a rear drive differential driven gear 114; the first end of the rear drive intermediate shaft gear 111 is connected to the rear drive motor 10, the second end of the rear drive intermediate shaft gear 111 is connected to the rear drive intermediate shaft differential wheel driving gear 112, the rear drive intermediate shaft differential wheel driving gear 112 is meshed with the rear drive differential driving gear 113, the rear drive differential driving gear 113 is meshed with the rear drive differential driven gear 114, and the rear drive differential driven gear 114 is installed on the rear wheel half shaft 12, and a rear wheel 13 is installed at both ends of the rear wheel half shaft 12. Such an arrangement can facilitate the power of the rear drive motor 10 to be transmitted to the rear wheel 13 through the rear drive differential assembly 11, and can also realize that the rear wheel 13 drives the rear drive motor 10 to rotate through the rear drive differential assembly 11 to charge the power battery 1.

[0090] In one embodiment, referring to Figure 1-5 The first clutch 3 and the second clutch 7 adopt hydraulic plate clutch or electromagnetic clutch.

[0091] As an example, the first clutch 3 and the second clutch 7 in the automobile hybrid power system can be hydraulic plate clutches or electromagnetic clutches, both of which can achieve the same system function, so that the application range of automobile hybrid power system parts is wider.

[0092] An embodiment of the present invention provides a vehicle, including a vehicle hybrid power system.

[0093] As an example, the front drive power system includes an engine 2, a first clutch 3, an input shaft gear 4, a front drive motor 5, a front drive differential assembly 6 and a second clutch 7; the engine 2 is connected to the first clutch 3, the first clutch 3 is connected to the front drive motor 5 through the input shaft gear 4, and the front drive motor 5 is connected to the power battery 1; the input shaft gear 4 is connected to the front drive differential assembly 6, and the front drive differential assembly 6 is connected to the front wheel 9 through the front wheel half shaft 8, and the second clutch 7 is arranged between the first clutch 3 and the front wheel 9. The engine 2, the first clutch 3, the second clutch 7 and the front drive motor 5 cooperate to form different combinations by switching different working states, so as to realize the series connection, parallel connection, front drive braking energy recovery, range extension and pure electric drive modes of the engine 2 and the front drive motor 5, so that the car can enter different driving modes. Driving mode, such a front drive power system can be switched between electric drive and fuel drive according to different vehicle states, which saves costs and has high fuel economy; the rear drive power system includes a rear drive motor 10 and a rear drive differential assembly 11; the rear drive motor 10 is connected to the front drive motor 5 through a power battery 1, one end of the rear drive differential assembly 11 is connected to the rear drive motor 10, and the rear drive differential assembly 11 is connected to the rear wheel 13 through a rear wheel half shaft 12. Such a setting of the rear drive motor 10 through the rear drive differential assembly 11 can realize the rear wheel drive of the vehicle, and can realize series, parallel four-wheel drive, pure electric four-wheel drive and four-wheel drive braking energy recovery with the front drive power system, and can also disconnect the front drive power system to realize pure electric direct drive of the rear drive, and can also realize rear drive braking energy recovery, increase the driving mode of the vehicle, and improve the controllability and power of the whole vehicle.

[0094] In this embodiment, the hybrid power system of the automobile is based on the traditional fuel vehicle, and a front drive power system is arranged at the front drive of the automobile and a rear drive power system is arranged at the rear drive of the automobile to realize four-wheel drive. Under the requirements of the vehicle control system, through 50:50 load distribution, the front drive power system and the rear drive power system are driven simultaneously, so that the vehicle has the advantages of high fuel economy of traditional hybrid vehicles and improves the power and controllability of the vehicle; in some extreme rainy and snowy road conditions, it can also enhance the adhesion of the vehicle and make the vehicle have better passing performance.

[0095] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hybrid power system for an automobile, characterized in that: Including front drive power system, rear drive power system and power battery; The front drive power system includes an engine, a first clutch, an input shaft gear, a front drive motor, a front drive differential assembly and a second clutch; the engine is connected to the first clutch, and the first clutch is connected to the front drive motor through the input shaft gear; the input shaft gear is connected to the front drive differential assembly, and the front drive differential assembly is connected to the front wheels; the second clutch is arranged between the first clutch and the front wheels; The rear drive power system comprises a rear drive motor and a rear drive differential assembly; one end of the rear drive differential assembly is connected to the rear drive motor, and the rear drive differential assembly is connected to the rear wheels; The front drive motor and the rear drive motor are both connected to the power battery.

2. The automotive hybrid power system according to claim 1, characterized in that: The automobile hybrid power system includes multiple driving modes, and the driving modes are any one of an engine direct drive mode, a front drive pure electric mode, a rear drive pure electric mode, a two-wheel drive parallel mode, a four-wheel drive parallel mode, a rear drive series mode, a four-wheel drive pure electric mode, a first braking recovery mode, a second braking recovery mode, and a parking power generation mode; The engine direct drive mode is: the engine is in a working state, the first clutch is in a engaged state, the second clutch is in a engaged state, the front drive motor is in a non-working state, and the rear drive motor is in a non-working state; The front-drive pure electric mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in an engaged state, the front-drive motor is in an operative state, and the rear-drive motor is in an inoperative state; In the rear-drive pure electric mode: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a disconnected state, the front-drive motor is in an inoperative state, and the rear-drive motor is in an operative state; The two-wheel drive parallel mode: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a connected state, the front drive motor is in a working state, and the rear drive motor is in a non-working state; The four-wheel drive parallel mode: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a connected state, the front drive motor is in a working state, and the rear drive motor is in a working state; The rear-drive series mode is: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a disconnected state, the front-drive motor is in a charging state, and the rear-drive motor is in a working state; The four-wheel drive pure electric mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in an engaged state, the front drive motor is in an operational state, and the rear drive motor is in an operational state; The first braking recovery mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a coupled state, the front drive motor is in a charging state, and the rear drive motor is in a charging state; The second braking recovery mode is: the engine is in an inoperative state, the first clutch is in a disconnected state, the second clutch is in a disconnected state, the front drive motor is in an inoperative state, and the rear drive motor is in a charging state; The parking power generation mode is: the engine is in a working state, the first clutch is in a connected state, the second clutch is in a disconnected state, the front drive motor is in a charging state, and the rear drive motor is in a non-working state.

3. The automotive hybrid power system according to claim 1, characterized in that: The front drive differential assembly includes a front drive intermediate shaft gear, a front drive intermediate shaft differential drive gear, a front drive differential driving gear and a front drive differential driven gear; The front drive intermediate shaft gear is meshed with the input shaft gear, the front drive intermediate shaft gear is connected with the front drive intermediate shaft differential drive gear, the front drive intermediate shaft differential drive gear is meshed with the front drive differential driving gear, the front drive differential driving gear is meshed with the front drive differential driven gear, the front drive differential driven gear is installed on the front wheel half shaft, and one of the front wheels is installed at each end of the front wheel half shaft.

4. The automotive hybrid power system according to claim 3, characterized in that: One end of the second clutch is connected to the front drive differential driven gear, and the other end of the second clutch is connected to the front drive differential driving gear.

5. The automotive hybrid power system according to claim 3, characterized in that: One end of the second clutch is connected to the front drive intermediate shaft gear, and the other end of the second clutch is connected to the front drive intermediate shaft differential drive gear.

6. The automotive hybrid power system according to claim 3, characterized in that: One end of the second clutch is connected to the front wheel half shaft, and the other end of the second clutch is connected to the front drive differential driven gear.

7. The automotive hybrid power system according to claim 3, characterized in that: The second clutch is arranged back-to-back with the first clutch, one end of the second clutch is connected to the input shaft gear, and the other end of the second clutch is connected to the front drive differential assembly.

8. The automotive hybrid power system according to claim 3, characterized in that: The second clutch is radially nested with the first clutch, one end of the second clutch is connected to the first clutch, and the other end of the second clutch is connected to the input shaft gear.

9. The automotive hybrid power system according to claim 1, characterized in that: The front drive power system further includes a torsional damper, a first end of which is connected to an output end of the engine, and a second end of which is connected to an active end of the first clutch.

10. The automotive hybrid power system according to claim 1, characterized in that: The automobile hybrid power system further comprises a planetary gear assembly disposed between the input shaft gear and the front drive motor, the planetary gear assembly comprising a planet carrier, a planetary gear ring, a planetary gear and a sun gear; The first end of the planetary carrier is connected to the input shaft gear, and a planetary wheel is arranged on the second end of the planetary carrier. The outer periphery of the planetary wheel is meshed with the planetary gear ring, and the inner side of the planetary wheel is meshed with the sun wheel, and the sun wheel is connected to the front drive motor.

11. The automotive hybrid power system according to claim 1, characterized in that: The rear drive differential assembly includes a rear drive intermediate shaft gear, a rear drive intermediate shaft differential wheel driving gear, a rear drive differential driving gear and a rear drive differential driven gear; The first end of the rear-drive intermediate shaft gear is connected to the rear-drive motor, the second end of the rear-drive intermediate shaft gear is connected to the rear-drive intermediate shaft differential reduction wheel driving gear, the rear-drive intermediate shaft differential reduction wheel driving gear is meshed with the rear-drive differential driving gear, the rear-drive differential driving gear is meshed with the rear-drive differential driven gear, the rear-drive differential driven gear is installed on the rear wheel half shaft, and one of the rear wheels is installed at each end of the rear wheel half shaft.

12. The automotive hybrid power system according to claim 1, characterized in that: The first clutch and the second clutch are hydraulic plate clutches or electromagnetic clutches.

13. A car, characterized in that: The hybrid vehicle system comprises the vehicle hybrid power system as described in any one of claims 1-12.

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