Drive device for hybrid vehicle, and vehicle

Abstract

The invention relates to the technical field of vehicles, and provides a driving device of a hybrid power vehicle and the vehicle, the driving device of the hybrid power vehicle comprises a first driving mechanism used for driving front wheels, the first driving mechanism comprises a first motor and a three-clutch assembly, and the three-clutch assembly is integrated in a rotor of the first motor; the second driving mechanism is used for driving the rear wheel, the second driving mechanism and the first driving mechanism work independently, the second driving mechanism comprises a second motor and a planet row speed reducing mechanism connected with the second motor, and the second motor and the planet row speed reducing mechanism are coaxial with the rear wheel. According to the technical scheme, the first driving mechanism and the second driving mechanism are designed to be of a small-size structure, four-wheel drive of hybrid power is achieved, the space utilization rate in the vehicle can be increased, more batteries can be placed, and the endurance of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a driving device of a hybrid vehicle and the vehicle. Background Art

[0002] Currently, hybrid vehicles have drive systems including power-split drive systems and three-in-one electric drive systems. However, the power-split drive system and the three-in-one electric drive system are too large. If both are installed on a vehicle, they will occupy too much volume of the vehicle, affecting the vehicle's mileage. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a drive device and a vehicle for a hybrid vehicle. By designing the first drive mechanism and the second drive mechanism into a smaller structure, hybrid four-wheel drive is achieved, which can improve the space utilization in the vehicle, place more batteries, and improve vehicle endurance.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a drive device for a hybrid vehicle, comprising: a first drive mechanism for driving the front wheels, the first drive mechanism comprising a first motor and a three-clutch assembly, the three-clutch assembly being integrated into the rotor of the first motor; a second drive mechanism for driving the rear wheels, operating independently of the first drive mechanism, the second drive mechanism comprising a second motor and a planetary gear reduction mechanism connected to the second motor, the second motor and the planetary gear reduction mechanism being coaxial with the rear wheels.

[0006] As an embodiment, the three-clutch assembly includes a first clutch, and the first drive mechanism also includes an engine, and the engine is connected to the first motor. When the first clutch is engaged, the first motor rotates to drive the crankshaft of the engine to rotate, and the engine starts, or; when the first clutch is engaged, the engine rotates to drive the first motor for power generation.

[0007] As an embodiment, the three-clutch assembly further includes a second clutch and a third clutch, wherein the second clutch is connected to the front wheel transmission via a first gear; and the third clutch is connected to the front wheel transmission via a second gear.

[0008] As an embodiment, the first drive mechanism further includes a differential, wherein the differential is coaxially mounted with the front wheels, and the differential is transmission-connected to the first gear and the second gear.

[0009] As an embodiment, the second driving mechanism further includes a dual-clutch assembly, which is coaxial with the second motor and is used for torque distribution and differential.

[0010] As an embodiment, the dual clutch assembly includes a fourth clutch and a fifth clutch, the fourth clutch is connected to one of the rear wheels, and the fifth clutch is connected to the other rear wheel.

[0011] As an embodiment, the planetary gear reduction mechanism includes a planet carrier, and the input end of the dual clutch assembly is designed as an integral whole with the planet carrier.

[0012] As an embodiment, the output shaft of the second motor is connected to the sun gear of the planetary reduction mechanism, the sun gear transmits power to the planetary gears, the planetary gears rotate around the sun gear, transmit power to the planetary carrier, and the planetary carrier is connected to the planetary gears, transmitting power to the dual clutch assembly.

[0013] As an embodiment, the driving device further includes a control unit, and the control unit is signal-connected to the first motor and the second motor respectively.

[0014] In a second aspect, the present application further provides a vehicle, which further includes the driving device described in the first aspect.

[0015] The technical solution of this application has the following beneficial effects:

[0016] The drive unit includes a first drive mechanism that can independently drive the front wheels. The first drive mechanism includes a first motor and a three-clutch assembly. The first motor drives the front wheels, and the three-clutch assembly is integrated into the rotor of the first motor, thereby reducing the axial dimensions of the three-clutch assembly and the first motor. This improves vehicle space utilization compared to existing power-split drive systems. The drive unit also includes a second drive mechanism that drives the rear wheels. The second drive mechanism operates independently of the first drive mechanism, enabling the vehicle to operate in front-wheel drive, rear-wheel drive, or all-wheel drive modes, improving vehicle adaptability. The second drive mechanism includes a second motor and a planetary gearbox connected to the second motor. The second motor drives the rear wheels, and the second motor and the planetary gearbox are coaxial with the rear wheels, reducing axial space usage. This compact design allows the entire second drive mechanism to be smaller and lighter, facilitating layout within the vehicle chassis. Compared to three-in-one electric drive systems, the coaxiality of the second motor and the planetary gearbox with the rear wheels avoids additional axial offset and complex transmission mechanisms, freeing up more space for the battery pack, other powertrain components, or the passenger compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a drive device for a hybrid vehicle provided in an embodiment of the present application.

[0019] Icons: 1-first motor; 2-three-clutch assembly; 21-first clutch; 22-second clutch; 23-third clutch; 3-second motor; 4-planetary gear reduction mechanism; 41-sun gear; 42-planet carrier; 43-planetary gear; 5-engine; 6-differential; 7-dual clutch assembly; 71-fourth clutch; 72-fifth clutch; 8-control unit; 9-battery; 10-first gear; 11-second gear. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0022] like Figure 1As shown, in the first aspect, an embodiment of the present application provides a drive device for a hybrid vehicle, including a first drive mechanism, which can drive the front wheels alone, and the first drive mechanism includes a first motor 1 and a three-clutch assembly 2. The first motor 1 can drive the front wheels, and the three-clutch assembly 2 is integrated in the rotor of the first motor 1, thereby reducing the axial size of the three clutches and the first motor 1, and improving the space utilization in the vehicle compared to the power split drive system in the prior art; the drive device also includes a second drive mechanism, which is used to drive the rear wheels, and the second drive mechanism and the first drive mechanism work independently, thereby realizing the vehicle's independent front drive, rear drive or four-wheel drive, and improving the adaptability of the vehicle; the second drive mechanism includes a second motor 3 and a planetary gear reduction mechanism 4 connected to the second motor 3, the second motor 3 can drive the rear wheels, and the second motor 3 and the planetary gear reduction mechanism 4 are coaxial with the rear wheels, reducing the axial space occupied. This compact structural design allows the entire second drive mechanism to be smaller and lighter, making it easier to layout in the vehicle chassis; compared to a three-in-one electric drive system, the second motor 3 and the planetary gear reduction mechanism 4 are coaxial with the rear wheels, avoiding additional axial offset and complex transmission devices, thereby freeing up more space for the battery pack, other power system components or the passenger compartment.

[0023] Optionally, the planetary gear reduction mechanism 4 reduces the rotation speed of the motor and increases the torque, thereby improving the driving force of the vehicle.

[0024] Optionally, the three-clutch assembly 2 is of modular design, and gear switching is achieved through the action of the second clutch 22 and the third clutch 23, without a synchronizer shift mechanism, thereby reducing the axial size.

[0025] Optionally, the rotor of the first motor 1 is interference fit with the outer hub of the three-clutch assembly 2, and the three-clutch assembly 2 is nested in the first motor 1 to reduce the axial dimension.

[0026] like Figure 1 As shown, as an embodiment, the three-clutch assembly 2 includes a first clutch 21, and the first drive mechanism also includes an engine 5, which is connected to the first motor 1. In this way, when the first clutch 21 is engaged, the rotation of the first motor 1 can drive the crankshaft of the engine 5 to rotate, and the engine 5 injects fuel and ignites, thereby starting the engine 5. Of course, in some cases, when the first clutch 21 is engaged, after the engine starts, it can also drive the first motor 1 to generate electricity, realizing the function of stopping and generating electricity. Of course, while the vehicle is running, it can also be driven by the second drive mechanism, and the first motor 1 is used to generate electricity, realizing the vehicle generating electricity while running.

[0027] like Figure 1As shown, as an embodiment, the three-clutch assembly 2 also includes a second clutch 22 and a third clutch 23. The second clutch 22 is connected to the front wheel transmission through the first gear gear 10; the third clutch 23 is connected to the front wheel transmission through the second gear gear 11; when the second clutch 22 is engaged, the first motor 1 can work alone, and it is a first-gear pure electric drive; when the third clutch 23 is engaged, the first motor 1 can also work alone, and it is a second-gear pure electric drive; when the first clutch 21 and the second clutch 22 are engaged, the first motor 1 and the engine 5 work together, and it is a first-gear combined drive; when the first clutch 21 and the third clutch 23 are engaged, the first motor 1 and the engine 5 work together, and it is a second-gear combined drive.

[0028] Alternatively, the output shaft of the engine 5 is connected to the input of the first clutch 21, and the output of the first clutch 21 is integrated with the inputs of the second clutch 22 and the third clutch 23 to reduce the size. The output of the second clutch 22 is connected to the first gear, and the output of the third clutch 23 is connected to the second gear 11.

[0029] Optionally, the differential 6 may be connected to the first gear 10 and the second gear 11 via stepped gears.

[0030] like Figure 1 As shown, as an embodiment, the first drive mechanism further includes a differential 6, which is coaxially mounted with the front wheels and is in driving connection with a first gear 10 and a second gear 11. The provision of the differential 6 allows the front wheels to rotate at different speeds, while also achieving torque distribution.

[0031] like Figure 1 As shown, as an embodiment, the second drive mechanism also includes a dual-clutch assembly 7. The dual-clutch assembly 7 is coaxial with the second motor 3, so that the output shaft of the second motor 3 is directly connected to the input end of the dual-clutch assembly 7, making the power transmission path shorter and more direct. The number of intermediate transmission components is reduced, thereby reducing mechanical losses and improving the transmission efficiency of the system. In addition, the power generated by the second motor 3 can be quickly transmitted to the dual-clutch assembly 7, achieving rapid power coupling and decoupling. The coaxial arrangement places the dual clutch and the second motor 3 on the same straight line, reducing the axial space occupied. At the same time, by controlling the engagement pressure of the two clutches in the dual-clutch assembly 7, differential control of the transmitted torque can be achieved, thereby realizing the differential function, replacing the traditional differential 6. Compared with the traditional differential 6, the structure is compact and the space volume is further reduced.

[0032] Optionally, the dual-clutch assembly 7 may be a dual-clutch transmission.

[0033] like Figure 1As shown, as an embodiment, the dual-clutch assembly 7 includes a fourth clutch 71 and a fifth clutch 72. The fourth clutch 71 is connected to one rear wheel, and the fifth clutch 72 is connected to the other rear wheel. Active control of the engagement pressure of the fourth clutch 71 and the fifth clutch 72 achieves differentiated control of the transmitted torque, thereby realizing a differential function, replacing the traditional differential 6. The fourth clutch 71 and the fifth clutch 72 are completely pressed to realize the differential lock function.

[0034] like Figure 1 As shown, as an embodiment, the planetary gear reduction mechanism 4 includes a planet carrier 42, and the input end of the dual clutch assembly 7 is designed as an integral whole with the planet carrier 42, so that the second drive mechanism has a compact structure and improves space utilization.

[0035] like Figure 1 As shown, as an embodiment, the output shaft of the second motor 3 is connected to the sun gear 41 of the planetary reduction mechanism 4. Sun gear 41 transmits power to the planetary gears 43. The planetary gears 43 rotate around the sun gear 41, transmitting power to the planetary carrier 42. The planetary carrier 42 connects to the planetary gears 43, transmitting power to the dual clutch assembly 7. The dual clutch assembly 7 then transmits power to different wheels, achieving power transmission. At the same time, it also reduces the number of intermediate components in the transmission system, such as complex gear sets and drive shafts. This not only simplifies the structure of the second drive mechanism, but also reduces its complexity and failure rate. Furthermore, due to the reduced number of transmission components, the reliability of the system is improved. Fewer components means fewer potential failure points, thereby improving the stability and durability of the second drive mechanism.

[0036] Optionally, the output shaft of the planetary carrier 42 is connected to the input shaft of the dual-clutch assembly 7 via a transmission shaft, so as to transmit the power of the planetary carrier 42 to the dual-clutch assembly 7; the input shaft of the dual-clutch assembly 7 can receive the power transmitted by the planetary carrier 42 and transmit it to different output paths as needed.

[0037] Optionally, the output shaft of the fourth clutch 71 can be connected to the transmission shaft, which passes through the planetary reduction mechanism 4 and the second motor 3 and is connected to the left rear wheel, and the output shaft of the fifth clutch 72 is connected to the right rear wheel.

[0038] like Figure 1 As shown, as an embodiment, the driving device further includes a control unit 8, and the control unit 8 is signal-connected to the first motor 1 and the second motor 3 respectively, so that different driving modes can be realized.

[0039] Optionally, the driving device further includes a battery 9 , and the control unit 8 is electrically connected to the battery 9 .

[0040] In a second aspect, an embodiment of the present application provides a vehicle, which includes the drive device provided in the first aspect.

[0041] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0042] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A driving device for a hybrid vehicle, characterized in that: include: a first drive mechanism for driving the front wheels, the first drive mechanism comprising a first motor and a three-clutch assembly, wherein the three-clutch assembly is integrated into the rotor of the first motor; The second drive mechanism is used to drive the rear wheels and works independently of the first drive mechanism. The second drive mechanism includes a second motor and a planetary gear reduction mechanism connected to the second motor. The second motor and the planetary gear reduction mechanism are coaxial with the rear wheels.

2. The driving device according to claim 1, characterized in that The three-clutch assembly includes a first clutch, and the first driving mechanism also includes an engine, the engine is connected to the first motor, and when the first clutch is engaged, the first motor rotates to drive the crankshaft of the engine to rotate, and the engine is started, or; When the first clutch is engaged, the engine rotates to drive the first motor to generate electricity.

3. The driving device according to claim 2, characterized in that The three-clutch assembly also includes a second clutch and a third clutch. The second clutch is connected to the front wheel through a first gear; the third clutch is connected to the front wheel through a second gear.

4. The driving device according to claim 3, characterized in that The first driving mechanism further includes a differential, which is coaxially mounted with the front wheels and is transmission-connected to the first gear and the second gear.

5. The driving device according to claim 4, characterized in that The second driving mechanism further includes a dual-clutch assembly, which is coaxial with the second motor and is used for torque distribution and differential.

6. The driving device according to claim 5, characterized in that The dual-clutch assembly includes a fourth clutch and a fifth clutch, wherein the fourth clutch is connected to one of the rear wheels, and the fifth clutch is connected to the other rear wheel.

7. The driving device according to claim 5, characterized in that The planetary gear reduction mechanism includes a planet carrier, and the input end of the dual clutch assembly is designed as an integral whole with the planet carrier.

8. The driving device according to any one of claims 1 to 5, characterized in that: The output shaft of the second motor is connected to the sun gear of the planetary reduction mechanism, and the sun gear transmits power to the planetary gears. The planetary gears rotate around the sun gear and transmit power to the planetary carrier. The planetary carrier is connected to the planetary gears and transmits power to the dual clutch assembly.

9. The driving device according to any one of claims 1 to 5, characterized in that: The driving device further includes a control unit, which is signal-connected to the first motor and the second motor respectively.

10. A vehicle, characterized in that: The vehicle further comprises a drive device according to any one of claims 1 to 9.

Images