Power system of vehicle and vehicle

Abstract

The power system of the vehicle comprises an engine, a motor, a first clutch, a second clutch, a transmission and a differential mechanism, the first clutch comprises a first input end and a first output end, the first input end is in transmission connection with the engine, and the first output end is selectively connected with the first input end; the second clutch comprises a second input end and a second output end, the second input end is in transmission connection with the motor, the second output end is selectively connected with the second input end, the transmission is located between the first clutch and the second clutch and connected with the first output end and the second output end, and the differential mechanism is in transmission connection with the transmission. By arranging the first clutch and the second clutch between the engine and the motor, various driving modes of the vehicle can be achieved according to connection or disconnection of the first clutch and the second clutch, then the NVH performance and the high-speed performance of the vehicle can be improved, and oil consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a power system of a vehicle and the vehicle. Background Art

[0002] At present, with the development of new energy vehicles, hybrid power systems have received attention and favor from major car manufacturers, which requires hybrid power systems to have the characteristics of high efficiency, low cost and excellent NVH (Noise, Vibration, Harshness) effects.

[0003] In the related technology, the structure of the hybrid power system is complex, which leads to high cost. In addition, the hybrid system equipped with an electric motor and a generator will increase the mass of the vehicle, thereby bringing a certain load to the vehicle body drive and affecting the energy-saving effect of the vehicle. If the hybrid system structure is simple, it will lead to a low fuel saving rate, and thus cannot take into account both cost and fuel saving rate. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a power system of a vehicle, which can take into account multiple driving modes, thereby improving the driving performance of the vehicle.

[0005] The utility model further provides a vehicle.

[0006] According to the power system of the vehicle of the utility model, it includes: an engine, a motor, a first clutch, a second clutch, a transmission and a differential. The first clutch includes: a first input end and a first output end, the first input end is drivingly connected to the engine, and the first output end is selectively engaged with the first input end. The second clutch includes: a second input end and a second output end, the second input end is drivingly connected to the motor, and the second output end is selectively engaged with the second input end. The transmission is located between the first clutch and the second clutch, and the transmission is respectively connected to the first output end and the second output end, and the differential is drivingly connected to the transmission.

[0007] According to the power system of the vehicle of the utility model, by arranging the first clutch and the second clutch between the engine and the motor, a variety of driving modes of the vehicle can be realized according to the engagement or disconnection of the first clutch and the second clutch, thereby improving the NVH performance and high-speed performance of the vehicle and reducing fuel consumption. In addition, the transmission is connected to the differential transmission, thereby improving the driving performance of the vehicle.

[0008] In some examples of the present invention, the transmission is a continuously variable transmission.

[0009] In some examples of the present utility model, the transmission includes: an input shaft, a driving pulley, an output shaft, a driven pulley and a transmission belt, the first output end and the second output end are respectively connected to the input shaft, the driving pulley is arranged on the input shaft, the output shaft is connected to the differential transmission, the driven pulley is arranged on the output shaft, and the transmission belt cooperates with the driving pulley and the driven pulley respectively.

[0010] In some examples of the present invention, an output gear is mounted on the output shaft, the differential includes a differential driving gear, the differential driving gear is meshed with the output gear, a synchronizer is provided on the output shaft, and the synchronizer is located on one side of the output gear for synchronizing the output shaft and the output gear.

[0011] In some examples of the present invention, the first clutch is located on a first side of the transmission, and the output gear and the second clutch are located on a second side of the transmission opposite the first side.

[0012] In some examples of the present invention, the transmission belt is a steel belt.

[0013] In some examples of the present invention, the power system of the vehicle further includes: a first transmission gear and a second transmission gear, the first transmission gear is connected to the motor, the second transmission gear is connected to the second input end, and the first transmission gear and the second transmission gear are meshed.

[0014] In some examples of the present invention, the motor is located on a side of the first transmission gear away from the second input end.

[0015] In some examples of the present invention, the power system of the vehicle further includes: a torsional damper connected between the engine and the first input end.

[0016] The vehicle according to the utility model comprises: the power system of the vehicle described above.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a simplified layout diagram of the power system of the vehicle according to the utility model.

[0020] Reference numerals:

[0021] 1. The vehicle's power system;

[0022] 2. Engine; 3. Motor; 4. First clutch; 41. First input end; 42. First output end; 5. Second clutch; 51. Second input end; 52. Second output end; 6. Transmission; 61. Input shaft; 62. Driving pulley; 63. Output shaft; 64. Driven pulley; 65. Drive belt; 66. Output gear; 67. Synchronizer; 7. Differential; 8. First transmission gear; 9. Second transmission gear; 10. Torsional damper. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0024] Reference below Figure 1 A power system 1 of a vehicle according to an embodiment of the present invention is described.

[0025] like Figure 1 As shown, the power system 1 of the vehicle according to the utility model includes: an engine 2, a motor 3, a first clutch 4, a second clutch 5, a transmission 6 and a differential 7, the first clutch 4 includes: a first input end 41 and a first output end 42, the first input end 41 is drivingly connected to the engine 2, and the first output end 42 is selectively engaged with the first input end 41, the second clutch 5 includes: a second input end 51 and a second output end 52, the second input end 51 is drivingly connected to the motor 3, and the second output end 52 is selectively engaged with the second input end 51, the transmission 6 is located between the first clutch 4 and the second clutch 5, the transmission 6 is connected to the first output end 42 and the second output end 52 respectively, and the differential 7 is drivingly connected to the transmission 6.

[0026] It can be understood that the engine 2, the motor 3, the first clutch 4, the second clutch 5, the transmission 6 and the differential 7 constitute the main structure of the vehicle power system 1, the first input end 41 and the first output end 42 constitute the main structure of the first clutch 4, the second input end 51 and the second output end 52 constitute the main structure of the second clutch 5, the first input end 41 is connected to the engine 2, and the first input end 41 can be engaged or disconnected with the first output end 42, so that the power of the engine 2 can be transmitted through the first clutch 4, the second input end 51 is connected to the motor 3, and the second input end 51 can be connected to the second output end 52. The first clutch 4 and the second clutch 5 are connected or disconnected, so that the power of the motor 3 can be transmitted through the second clutch 5, and the transmission 6 is connected between the first clutch 4 and the second clutch 5, and the transmission 6 is connected to the differential 7, so that the power of the engine 2 can be transmitted to the differential 7 through the first clutch 4 and the transmission 6, and the power of the motor 3 can be transmitted to the differential 7 through the second clutch 5 and the transmission 6, so that the vehicle can realize the switching of the motor drive mode, the engine drive mode, the energy recovery mode, the parking charging mode and the hybrid drive mode, and the vehicle can adapt to different road conditions and improve the driving performance of the vehicle by switching the mode. For example, the power system 1 of the vehicle is applied to the front axle, and the rear axle uses the same power system 1 of the vehicle, so that the four-wheel drive mode of the vehicle can be realized.

[0027] Therefore, by arranging the first clutch 4 and the second clutch 5 between the engine 2 and the motor 3, a variety of driving modes of the vehicle can be realized according to the engagement or disconnection of the first clutch 4 and the second clutch 5, thereby improving the NVH performance and high-speed performance of the vehicle and reducing fuel consumption, and the transmission 6 is connected to the differential 7 in a transmission manner, thereby improving the driving performance of the vehicle; at the same time, the system can realize a variety of driving modes through the engine 2 and one motor 3, and the overall weight is smaller than that of the existing dual-motor hybrid architecture, and the load brought to the vehicle body drive is smaller and more energy-efficient.

[0028] Among them, Figure 1 As shown, the transmission 6 is a continuously variable transmission 6, so that when switching between different modes, the power will not be interrupted, thereby improving the driving efficiency of the vehicle's power system 1 and the driving performance of the vehicle. For example, there is no power interruption and frustration when adjusting the speed ratio between the motor drive mode, the engine drive mode and the hybrid drive mode, and the process of switching from the motor drive mode to the engine drive mode can also be adjusted by the motor 3, so that there can be no power interruption switching, and then the smoothness of the vehicle's switching between different modes can be guaranteed.

[0029] In addition, if Figure 1As shown, the transmission 6 includes: an input shaft 61, a driving pulley 62, an output shaft 63, a driven pulley 64 and a transmission belt 65. The first output end 42 and the second output end 52 are respectively connected to the input shaft 61, the driving pulley 62 is arranged on the input shaft 61, the output shaft 63 is transmission-connected to the differential 7, the driven pulley 64 is arranged on the output shaft 63, and the transmission belt 65 cooperates with the driving pulley 62 and the driven pulley 64 respectively. That is to say, the input shaft 61, the driving pulley 62, the output shaft 63, the driven pulley 64 and the transmission belt 65 constitute the main structure of the transmission 6, and the first output end 42 and the second output end 52 are respectively connected to the input shaft 61, so that the first clutch 4 and the second clutch 5 can be located on the input shaft 61, the driving pulley 62 is located on the input shaft 61, and the driving pulley 62 is located between the first output end 42 and the second output end 52, so that the power of the engine 2 can be transmitted to the driving pulley 62 through the first input end 41 and the first output end 42, and the power of the motor 3 can be transmitted to the driving pulley 62 through the second input end 51 and the second output end 52. The driven pulley 62 and the driven pulley 64 are located on the output shaft 63, and the output shaft 63 is connected to the differential 7. A transmission belt 65 is arranged between the driving pulley 62 and the driven pulley 64, so that the power of the engine 2 can be transmitted to the differential 7 through the first clutch 4, the driving pulley 62, the transmission belt 65, the driven pulley 64 and the output shaft 63, and the power of the motor 3 can be transmitted to the differential 7 through the second clutch 5, the driving pulley 62, the transmission belt 65, the driven pulley 64 and the output shaft 63, so that the vehicle can realize the switching of the motor drive mode, the engine drive mode, the energy recovery mode, the parking charging mode and the hybrid drive mode.

[0030] Among them, Figure 1 As shown, an output gear 66 is sleeved on the output shaft 63, and the differential 7 includes a differential 7 driving gear, which meshes with the output gear 66. A synchronizer 67 is provided on the output shaft 63, and the synchronizer 67 is located on one side of the output gear 66, so that the output shaft 63 and the output gear 66 can be synchronized. It can be understood that the output gear 66 is sleeved on the output shaft 63, and the differential 7 driving gear meshes with the output gear 66 for transmission, so that the power of the engine 2 or the motor 3 can be transmitted to the differential 7 driving gear through the output shaft 63 and the output gear 66, so that the engine 2 and the motor 3 can share the output shaft 63, and the synchronizer 67 is provided on the output shaft 63, so that the synchronizer 67 can be synchronized with the output shaft 63 and the output gear 66, so that the vehicle can adapt to different road conditions and improve the driving performance of the vehicle by switching different modes. For example, the synchronizer 67 can also be a clutch, so that the switching of different driving modes can be achieved by engaging or disconnecting the clutch.

[0031] In particular, if Figure 1As shown, the first clutch 4 is located on the first side of the transmission 6, and the output gear 66 and the second clutch 5 are located on the second side of the transmission 6 opposite to the first side. That is to say, the first clutch 4 and the second clutch 5 are respectively located on both sides of the transmission 6, so that the first output end 42 and the second output end 52 can be connected to the driving pulley 62, and the transmission 6 is connected to the output gear 66. This arrangement can transmit the power of the engine 2 to the output gear 66 through the first clutch 4 and the transmission 6, and the power of the motor 3 can be transmitted to the output gear 66 through the second clutch 5 and the transmission 6, so that the motor 3 and the transmission 6 can be integrated, thereby reducing the number of components, reducing costs, reducing system volume, optimizing layout space, and improving platform compatibility.

[0032] Alternatively, if Figure 1 As shown, the transmission belt 65 is a steel belt. This arrangement can improve the power transmission performance between the driving pulley 62 and the driven pulley 64, and can also ensure the structural strength of the transmission belt 65, thereby facilitating the power transmission of the engine 2 and the motor 3 to the output shaft 63, thereby improving the driving performance of the vehicle.

[0033] In addition, if Figure 1 As shown, the power system 1 of the vehicle further includes: a first transmission gear 8 and a second transmission gear 9, the first transmission gear 8 is connected to the motor 3, the second transmission gear 9 is connected to the second input end 51, and the first transmission gear 8 and the second transmission gear 9 are meshed. It can be understood that the first transmission gear 8 is located on one side of the motor 3, the first transmission gear 8 and the second transmission gear 9 are meshed and connected, so that the power of the motor 3 can be transmitted to the second transmission gear 9 through the first transmission gear 8, and the second transmission gear 9 is connected to the second input end 51, so that the power of the motor 3 can be transmitted to the second input end 51 through the first transmission gear 8 and the second transmission gear 9, thereby realizing the switching of different modes of the vehicle.

[0034] In particular, if Figure 1 As shown, the motor 3 is located on the side of the first transmission gear 8 away from the second input end 51. This arrangement allows the first transmission gear 8 to be located between the second clutch 5 and the motor 3, thereby facilitating the power of the motor 3 to be transmitted to the second input end 51 through the first transmission gear 8 and the second transmission gear 9, and can also make the lateral load of the vehicle tend to be uniform, thereby achieving switching of different modes of the vehicle and rationalizing the overall layout.

[0035] In addition, Figure 1As shown, the power system 1 of the vehicle further includes: a torsional damper 10, which is connected between the engine 2 and the first input end 41. That is, the torsional damper 10 is located between the engine 2 and the first input end 41, and such a configuration can reduce the torsional stiffness between the engine 2 and the first input end 41, thereby reducing the natural frequency of torsional vibration, and can also eliminate the idling noise and torsional vibration of the transmission 6, thereby improving the engagement smoothness of the first clutch 4.

[0036] Below Figure 1 Taking the power system shown as an example, various modes of the power system 1 of the vehicle according to the embodiment of the present utility model are described in detail.

[0037] Motor drive mode: the engine 2 stops working, the motor 3 starts working, the first input end 41 and the first output end 42 are disconnected, the second input end 51 and the second output end 52 are engaged, the synchronizer 67 is engaged, and the power of the motor 3 is transmitted to the output shaft 63 through the first transmission gear 8, the second transmission gear 9, the driving pulley 62, the transmission belt 65 and the driven pulley 64, and then transmitted to the output gear 66 through the output shaft 63 and the synchronizer 67, and the output gear 66 is then transmitted to the differential 7, and the differential 7 is connected to the driving shaft of the vehicle, so that the wheels can be driven to move, and then the motor drive mode can be realized. This mode is suitable for when the power battery is high and when driving at low speed, and the economy of this mode is better. For example, the reverse rotation of the motor 3 can realize the reversing function of the vehicle.

[0038] Engine drive mode: the motor 3 stops working, the engine 2 starts working, the synchronizer 67 engages, and the power of the engine 2 is transmitted to the output shaft 63 through the driving pulley 62, the transmission belt 65 and the driven pulley 64, and then transmitted to the output gear 66 through the output shaft 63 and the synchronizer 67. The output gear 66 is then transmitted to the differential 7. The differential 7 is connected to the driving shaft of the vehicle, so that the wheels can be driven to move, thereby realizing the engine drive mode. This mode is suitable for when the battery power is low.

[0039] Energy recovery mode: when the vehicle decelerates, the first input end 41 and the first output end 42 are disconnected, the second input end 51 and the second output end 52 are engaged, the synchronizer 67 is engaged, and the kinetic energy generated by the wheels is transmitted to the differential 7 through the drive shaft, and the differential 7 is transmitted to the driven pulley 64 through the output gear 66, the synchronizer 67 and the output shaft 63, and the driven pulley 64 is transmitted to the driving pulley 62 through the transmission belt 65, and the driving pulley 62 then transmits the power to the motor 3 through the second clutch 5 to generate electricity, so that energy can be recovered to the power battery.

[0040] Parking charging mode: the first input terminal 41 is engaged with the first output terminal 42, the second input terminal 51 and the second output terminal 52 are engaged, the synchronizer 67 is disconnected, and the engine 2 runs to drive the driving pulley 62 to transmit to the motor 3 to generate electricity, thereby charging the power battery.

[0041] Hybrid drive mode: the engine 2 and the motor 3 are started, the first input end 41 and the first output end 42 are engaged, the second input end 51 and the second output end 52 are engaged, and the synchronizer 67 is engaged. The power of the engine 2 and the motor 3 is transmitted to the output shaft 63 through the driving pulley 62, the transmission belt 65 and the driven pulley 64. The output shaft 63 and the synchronizer 67 then transmit the power to the output gear 66. The output gear 66 transmits the power to a differential 7. The differential 7 is connected to the drive shaft and transmitted to the wheels, thereby realizing a hybrid drive mode. This mode has strong power. The output power of the engine 2 and the motor 3 can achieve stepless speed change, so that the engine 2 can always remain in the high-efficiency zone, thereby reducing the fuel consumption of the vehicle and improving high-speed performance.

[0042] The vehicle according to the embodiment of the utility model comprises: the power system 1 of the vehicle of the above embodiment. By arranging the first clutch 4 and the second clutch 5 between the engine 2 and the motor 3, various driving modes of the vehicle can be realized according to the engagement or disconnection of the first clutch 4 and the second clutch 5, thereby improving the NVH performance and high-speed performance of the vehicle and reducing fuel consumption, and the transmission 6 is drivingly connected with the differential 7, thereby improving the driving performance of the vehicle.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A power system for a vehicle, characterized in that: include: Engine (2); Motor (3); A first clutch (4), the first clutch (4) comprising: a first input end (41) and a first output end (42), the first input end (41) being transmission-connected to the engine (2), and the first output end (42) being selectively engaged with the first input end (41); A second clutch (5), the second clutch (5) comprising: a second input end (51) and a second output end (52), the second input end (51) being transmission-connected to the motor (3), and the second output end (52) being selectively engaged with the second input end (51); A transmission (6), the transmission (6) being located between the first clutch (4) and the second clutch (5), and the transmission (6) being connected to the first output end (42) and the second output end (52) respectively; A differential (7), the differential (7) being drivingly connected to the transmission (6).

2. The vehicle power system according to claim 1, characterized in that: The transmission (6) is a continuously variable transmission (6).

3. The power system of a vehicle according to claim 2, characterized in that: The transmission (6) comprises: An input shaft (61), the first output end (42) and the second output end (52) being respectively connected to the input shaft (61); A driving pulley (62), wherein the driving pulley (62) is arranged on the input shaft (61); An output shaft (63), the output shaft (63) being drivingly connected to the differential (7); A driven pulley (64), wherein the driven pulley (64) is arranged on the output shaft (63); A transmission belt (65), wherein the transmission belt (65) is respectively matched with the driving pulley (62) and the driven pulley (64).

4. The vehicle power system according to claim 3, characterized in that: An output gear (66) is sleeved on the output shaft (63); the differential (7) comprises a differential driving gear, the differential driving gear is meshed with the output gear (66); a synchronizer (67) is arranged on the output shaft (63), and the synchronizer (67) is located on one side of the output gear (66) for synchronizing the output shaft (63) and the output gear (66).

5. The vehicle power system according to claim 4, characterized in that: The first clutch (4) is located on a first side of the transmission (6), and the output gear (66) and the second clutch (5) are located on a second side of the transmission (6) opposite to the first side.

6. The power system of a vehicle according to claim 3, characterized in that: The transmission belt (65) is a steel belt.

7. The power system of a vehicle according to claim 1, characterized in that: Also includes: A first transmission gear (8), the first transmission gear (8) being connected to the motor (3); A second transmission gear (9), the second transmission gear (9) is connected to the second input end (51), and the first transmission gear (8) and the second transmission gear (9) are meshed.

8. The vehicle power system according to claim 7, characterized in that: The motor (3) is located on a side of the first transmission gear (8) away from the second input end (51).

9. The power system of a vehicle according to claim 1, characterized in that: Also includes: A torsional vibration damper (10) is connected between the engine (2) and the first input end (41).

10. A vehicle, characterized in that: include: A power system (1) for a vehicle as claimed in any one of claims 1 to 9.

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