Power system and automobile

Abstract

The utility model relates to the technical field of automobile driving, in particular to a power system and an automobile, and the power system comprises an engine and a speed change mechanism which are connected through a first clutch unit. The first motor is in transmission connection with the speed change mechanism. The second motor is in transmission connection with the speed change mechanism and located between the engine and the first motor. The oil pump lubricates the transmission mechanism. And the oil pump lubricates the speed change mechanism, so that the speed change mechanism can be maintained, and the service life of the power system is prolonged. The speed change mechanism and the second motor are located between the engine and the first motor, the distribution uniformity of the weight of all components of the power system on the vehicle body can be improved, and the space utilization efficiency of the vehicle body is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile drive technology, and in particular to a power system and an automobile. Background Art

[0002] A power system refers to a system that generates power through a power source and transmits it through multiple components to an output mechanism.

[0003] The power system generally includes a power source and a transmission mechanism. The transmission mechanism adjusts the power of the power source to make it suitable for the working conditions of the vehicle.

[0004] In the related art, the layout of the power system in the car is unreasonable, which occupies more space in the car. Utility Model Content

[0005] In view of this, the present application provides a power system and a vehicle to improve the space utilization efficiency of the vehicle.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of the present application provides a power system, the power system comprising an engine, a first motor, a speed change mechanism, a second motor and an oil pump, wherein:

[0008] The engine is connected to the speed change mechanism via a first clutch unit;

[0009] The first motor is transmission-connected to the speed change mechanism;

[0010] The second motor is transmission-connected to the speed change mechanism, and the second motor is located between the engine and the first motor;

[0011] The oil pump is used for power switching of the speed change mechanism and lubrication of the power system.

[0012] Optionally, the power system includes a transmission mechanism, and the transmission mechanism is transmission-connected to the speed change mechanism.

[0013] Optionally, the speed change mechanism includes a speed change shaft, a first speed change gear, a second speed change gear, a third speed change gear, a second clutch unit and a third clutch unit, the first speed change gear is drivingly connected to the speed change shaft through the second clutch, the second speed change gear is drivingly connected to the speed change shaft through the third clutch unit, the third speed change gear drivingly connects the first speed change gear and the second motor, the second speed change gear is drivingly connected to the transmission mechanism, both the first speed change gear and the third speed change gear can be drivingly connected to the transmission mechanism, one end of the speed change shaft is connected to the engine through the first clutch unit, and the other end of the speed change shaft is drivingly connected to the first motor.

[0014] Optionally, the first speed gear and the second speed gear are both sleeved on the outer side of the speed shaft and are rotatable relative to the speed shaft.

[0015] Optionally, the third speed gear is located in an accommodating cavity, and the oil pump is connected to the accommodating cavity.

[0016] Optionally, an end surface of the first speed change gear is fixedly connected to an end surface of the third speed change gear.

[0017] Optionally, the transmission mechanism includes a transmission shaft, a first transmission gear, a second transmission gear, a third transmission gear and a synchronizer, the first transmission gear is meshed with the first speed change gear, the second transmission gear is meshed with the second speed change gear, the third transmission gear is meshed with the third speed change gear, the second transmission gear is transmission-connected to the transmission shaft, the synchronizer is sleeved on the transmission shaft and can move along the axial direction of the transmission shaft so as to be able to transmission-connect the first transmission gear and the transmission shaft, and transmission-connect the third transmission gear and the transmission shaft.

[0018] Optionally, the output mechanism includes a differential, an axle and wheels, the axle drivingly connects the differential and the wheels, and the transmission mechanism is drivingly connected to the differential.

[0019] Optionally, the speed change mechanism further includes an input gear, and the second motor, the input gear and the third speed change gear are sequentially arranged in a direction perpendicular to the axial direction of the speed change shaft, and the input gear transmission connects the second motor and the third speed change gear.

[0020] Optionally, the power system further includes an output mechanism, and the transmission mechanism is transmission-connected between the speed change mechanism and the output mechanism.

[0021] Optionally, the oil pump comprises a housing and blades, the housing having an oil passage, the blades being located in the oil passage and being rotatable relative to the housing along an axis perpendicular to an extending direction of the oil passage.

[0022] Optionally, the oil pump includes a drive shaft, at least a portion of the drive shaft extends into the oil channel, the drive shaft is rotatable relative to the housing, and the drive shaft is drivingly connected to the blades.

[0023] Optionally, the oil pump also includes a first bearing and a second bearing, the inner ring of the first bearing and the inner ring of the second bearing are both sleeved on the drive shaft and connected to the drive shaft, the blade is located between the first bearing and the second bearing, and the outer ring of the first bearing and the outer ring of the second bearing are both connected to the housing.

[0024] Optionally, the power system further includes a power supply, and the first motor and the second motor are electrically connected to the power supply respectively.

[0025] Optionally, the output end of the engine is arranged opposite to the output end of the first motor.

[0026] A second aspect of the present application provides a power system, the power system comprising:

[0027] engine;

[0028] a first motor and a second motor;

[0029] A speed change mechanism, comprising a speed change shaft, the engine, the first motor and the second motor are respectively connected to the speed change shaft in driving connection, and the speed change shaft is provided with a speed change gear;

[0030] The transmission mechanism comprises a transmission shaft, on which a transmission gear is arranged;

[0031] At least two shift gear sets with different speed ratios are formed between the speed change gear on the speed change shaft and the transmission gear on the transmission shaft;

[0032] A speed-changing coupling mechanism is provided between the speed-changing shaft and at least one speed-changing gear, and the speed-changing coupling mechanism is used to couple or disconnect the power of the speed-changing shaft and the speed-changing gear; a transmission coupling mechanism is provided between the transmission shaft and at least one transmission gear, and the transmission coupling mechanism is used to couple or disconnect the power of the transmission shaft and the transmission gear;

[0033] It also includes an oil pump, a first oil circuit and a second oil circuit; the oil pump is connected to the first oil circuit and the second oil circuit respectively, the first oil circuit is connected to the speed change coupling mechanism and / or the transmission coupling mechanism, and is used to drive the speed change coupling mechanism and / or the transmission coupling mechanism; the second oil circuit is used to lubricate the transmission structure.

[0034] Optionally, the oil pump includes at least one of a mechanical pump and an electric pump.

[0035] Optionally, the power system includes a first clutch unit, the engine is connected to the transmission shaft via the first clutch unit, and the oil pump is connected to the first clutch unit to provide driving force for the first clutch unit.

[0036] Optionally, the speed gear includes a first speed gear, a second speed gear and a third speed gear, the transmission gear includes a first transmission gear, a second transmission gear and a third transmission gear, the shift gear group includes a first shift gear group, a second shift gear group and a third shift gear group, the first speed gear is meshed with the first transmission gear to form the first shift gear group, the second speed gear is meshed with the second transmission gear to form the second shift gear group, and the third speed gear is meshed with the third transmission gear to form the third shift gear group.

[0037] Optionally, the speed change coupling mechanism includes a second clutch unit and a third clutch unit, the first speed gear is fixedly connected to the third speed gear, the first speed gear is connected to the speed shaft through the second clutch unit, and the second speed gear is connected to the speed shaft through the third clutch unit.

[0038] Optionally, the transmission coupling mechanism includes a synchronizer, and the synchronizer is movable on the transmission shaft so as to connect the transmission shaft with the second transmission gear and connect the transmission shaft with the third transmission gear.

[0039] Optionally, the oil pressure of the first oil circuit is greater than the oil pressure of the second oil circuit.

[0040] The third aspect of the present application provides a power system, which includes an engine, a first motor, a speed change mechanism, a second motor, a transmission mechanism, an output mechanism and an oil pump. The engine is arranged opposite to the first motor. The engine is connected to one end of the speed change mechanism through a first clutch unit. The first motor is connected to the other end of the speed change mechanism by transmission. The second motor is connected to the speed change mechanism by transmission, and the second motor is located between the engine and the first motor. The transmission mechanism is connected to the speed change mechanism and the output mechanism by transmission. The oil pump is used to lubricate the speed change mechanism.

[0041] A fourth aspect of the present application provides a car, comprising a power system as described in the above technical solution.

[0042] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the oil pump lubricates the speed change mechanism, which is beneficial to the maintenance of the speed change mechanism and improves the service life of the power system of the present application. The speed change mechanism and the second motor are located between the engine and the first motor, which can improve the uniformity of the weight distribution of each component of the power system on the vehicle body, and can also improve the compactness of the power system, thereby improving the space utilization efficiency of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic diagram of the structure of a power system provided in an embodiment of the present application;

[0045] Figure 2 A power transmission diagram of a first power system provided in an embodiment of the present application;

[0046] Figure 3 A power transmission diagram of a second power system provided in an embodiment of the present application;

[0047] Figure 4 A power transmission diagram of a third power system provided in an embodiment of the present application;

[0048] Figure 5 A power transmission diagram of a fourth power system provided in an embodiment of the present application;

[0049] Figure 6 A power transmission diagram of a fifth power system provided in an embodiment of the present application;

[0050] Figure 7 A power transmission diagram of a sixth power system provided in an embodiment of the present application;

[0051] Figure 8 A power transmission diagram of a seventh power system provided in an embodiment of the present application;

[0052] Fig. 9 A power transmission diagram of an eighth power system provided in an embodiment of the present application;

[0053] Fig.10 A power transmission diagram of a ninth power system provided in an embodiment of the present application;

[0054] Fig.11 A power transmission diagram of a tenth power system provided in an embodiment of the present application;

[0055] Fig.12 A power transmission diagram of the eleventh power system provided in an embodiment of the present application;

[0056] Fig.13 A power transmission diagram of a twelfth power system provided in an embodiment of the present application;

[0057] Fig.14 A power transmission diagram of a thirteenth power system provided in an embodiment of the present application;

[0058] Fig.15 A schematic diagram of the structure of an oil pump provided in an embodiment of the present application;

[0059] Fig.16 A schematic cross-sectional view of an oil pump provided in an embodiment of the present application;

[0060] Fig.17 This is a schematic diagram of the assembly of the oil pump provided in an embodiment of the present application.

[0061] The reference numerals in the figures represent respectively:

[0062] 1. Engine;

[0063] 2. The first motor;

[0064] 3. Speed ​​change mechanism; 31. Speed ​​change shaft; 32. First speed change gear; 33. Second speed change gear; 34. Third speed change gear; 35. Second clutch unit; 36. Third clutch unit; 37. Input gear;

[0065] 4. Second motor;

[0066] 5. Transmission mechanism; 51. Transmission shaft; 52. First transmission gear; 53. Second transmission gear; 54. Third transmission gear; 55. Synchronizer;

[0067] 6. output mechanism; 61. differential; 62. axle; 63. wheel;

[0068] 7. Oil pump; 71. Housing; 72. Blades; 701. Oil passage; 73. Drive shaft; 74. First bearing; 75. Second bearing; 76. First oil passage; 77. Second oil passage;

[0069] 8. The first clutch unit;

[0070] 9. Power supply;

[0071] 10. Transmission coupling mechanism;

[0072] 11. Speed-changing coupling mechanism;

[0073] 12. Transmission structure.

[0074] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0076] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0077] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0078] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0079] The first aspect of the present application provides a power system, such as Figure 1 As shown, the power system includes an engine 1, a first motor 2, a speed change mechanism 3, a second motor 4 and an oil pump 7. The engine 1 is connected to one end of the speed change mechanism 3 through a first clutch unit 8. The first motor 2 is connected to the other end of the speed change mechanism 3 by transmission. The second motor 4 is connected to the speed change mechanism 3 by transmission, and the second motor 4 is located between the engine 1 and the first motor 2. The oil pump 7 is used to drive the speed change mechanism 3 and lubricate the transmission structure 12.

[0080] It is understandable that the oil pump 7 lubricates the speed change mechanism 3, which is beneficial to maintaining the speed change mechanism 3 and improving the service life of the power system of the present application. The speed change mechanism 3 and the second motor 4 are located between the engine 1 and the first motor 2, which can improve the uniformity of the weight distribution of each component of the power system on the vehicle body, and can also improve the compactness of the power system, thereby improving the space utilization efficiency of the vehicle body.

[0081] In the embodiment of the present application, the engine 1 is connected to the speed change mechanism 3 through the first clutch unit 8. It can be understood that when the first clutch unit 8 is closed, the engine 1 forms a transmission connection with the speed change mechanism 3, and the power generated by the engine 1 during operation can be transmitted to the output mechanism 6 through the speed change mechanism 3; when the first clutch unit 8 is disconnected, the engine 1 is disconnected from the speed change mechanism 3, and the power generated by the engine 1 cannot be transmitted to the speed change mechanism 3. Optionally, the first clutch unit 8 can be an electromagnetic clutch, a friction clutch, or a hydraulic clutch.

[0082] In the embodiment of the present application, the first motor 2 is transmission-connected to the speed change mechanism 3. It is understandable that when the first motor 2 is working, the power generated by it can be directly transmitted to the speed change mechanism 3 and output to the output mechanism 6.

[0083] In the embodiment of the present application, when the second motor 4 is working, the power generated by it can be directly transmitted to the speed change mechanism 3. Since the engine 1 has a large mass and is connected to the speed change mechanism 3 through the first clutch unit 8, the center of gravity of the structure composed of the speed change mechanism 3, the first motor 2 and the engine 1 is biased to the side where the engine 1 is located, and the second motor 4 is located between the first motor 2 and the engine 1, which is conducive to adjusting its center of gravity and improving the structural stability of the power system of the present application.

[0084] In the embodiment of the present application, the speed change mechanism 3 can be driven by hydraulic pressure. The oil pump 7 can be used as a hydraulic power source to drive the speed change mechanism 3 to move and adjust the output torque.

[0085] In the embodiment of the present application, the transmission structure 12 may refer to two components that can move relative to each other. The transmission structure 12 may refer to the crankshaft main shaft diameter and main bearing, crank pin and connecting rod bearing, cam journal and camshaft bearing, and piston ring and cylinder wall. The transmission structure 12 may also refer to the structures such as the various kinematic pairs and transmission gear pairs of the valve mechanism. Under the action of lubrication, the friction generated by the above structures can be reduced and the heat generated can be transferred out.

[0086] In some of the embodiments of this application, Figure 1 As shown, the power system includes a transmission mechanism 5 , which is transmission-connected to the speed change mechanism 3 .

[0087] It can be understood that the transmission mechanism 5 can transmit the torque obtained and adjusted by the speed change mechanism 3 from the engine 1, the first motor 2 and the second motor 4, so that the torque can be output to a suitable component.

[0088] In some of the embodiments of this application, Figure 1As shown, the speed change mechanism 3 includes a speed change shaft 31, a first speed change gear 32, a second speed change gear 33, a third speed change gear 34, a second clutch unit 35 and a third clutch unit 36. The first speed change gear 32 is transmission-connected to the speed change shaft 31 through the second clutch, the second speed change gear 33 is transmission-connected to the speed change shaft 31 through the third clutch unit 36, the third speed change gear 34 is transmission-connected between the first speed change gear 32 and the second motor 4, the second speed change gear 33 is transmission-connected to the transmission mechanism 5, the first speed change gear 32 and the third speed change gear 34 can both be transmission-connected to the transmission mechanism 5, one end of the speed change shaft 31 is connected to the engine 1 through the first clutch unit 8, and the other end of the speed change shaft 31 is transmission-connected to the first motor 2.

[0089] It can be understood that the first speed gear 32 , the second speed gear 33 and the second speed gear 33 can transmit power from the first motor 2 , the second motor 4 and the engine 1 , and at the same time adjust the torque of the transmitted power and output it to the transmission mechanism 5 .

[0090] In the embodiment of the present application, the power system has multiple working states, including:

[0091] 1. If Figure 2 As shown, the first motor 2 and the engine 1 are not working, the first clutch unit 8, the second clutch unit 35 and the third clutch unit 36 ​​are disconnected, the first speed gear 32 is connected to the transmission of the transmission mechanism 5, and the third speed gear 34 is disconnected from the transmission connection of the transmission mechanism 5.

[0092] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34 , and then transmitted to the transmission mechanism 5 through the first speed gear 32 .

[0093] 2. If Figure 3 As shown, the first motor 2 and the engine 1 are not working, the first clutch unit 8 is disconnected, the second clutch unit 35 and the third clutch unit 36 ​​are closed, and the transmission connection between the first speed gear 32 and the third speed gear 34 and the transmission mechanism 5 is disconnected.

[0094] The power generated by the second motor 4 is transmitted to the speed change shaft 31 through the third speed change gear 34 and the second clutch unit 35, and is transmitted to the third clutch unit 36 ​​through the speed change shaft 31, and then transmitted to the second speed change gear 33 through the third clutch unit 36; the second speed change gear 33 transmits the power to the transmission mechanism 5.

[0095] 3. If Figure 4 As shown, the first motor 2 and the engine 1 are not working, the first clutch unit 8, the second clutch unit 35 and the third clutch unit 36 ​​are disconnected, the transmission connection between the first speed gear 32 and the transmission mechanism 5 is disconnected, and the third speed gear 34 is connected to the transmission of the transmission mechanism 5.

[0096] The power generated by the second motor 4 is transmitted to the transmission mechanism 5 through the third speed change gear 34 .

[0097] 4. If Figure 5 As shown, the engine 1 is not working, the first clutch unit 8 and the third clutch unit 36 ​​are disconnected, the second clutch unit 35 is closed, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is connected to the transmission of the transmission mechanism 5.

[0098] The power generated by the first motor 2 is transmitted to the second clutch unit 35 through the speed change shaft 31 , and then transmitted to the first speed change gear 32 through the second clutch unit 35 ; the first speed change gear 32 transmits the power to the transmission mechanism 5 .

[0099] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34 , and then transmitted to the transmission mechanism 5 through the first speed gear 32 .

[0100] 5. If Figure 6 As shown, the engine 1 is not working, the first clutch unit 8 and the second clutch unit 35 are disconnected, the third clutch unit 36 ​​is closed, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is transmission-connected to the transmission mechanism 5.

[0101] The power generated by the first motor 2 is transmitted to the third clutch unit 36 ​​via the speed change shaft 31 , and then transmitted to the second speed change gear 33 via the third clutch unit 36 ​​; the second speed change gear 33 transmits the power to the transmission mechanism 5 .

[0102] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34 , and then transmitted to the transmission mechanism 5 through the first speed gear 32 .

[0103] 6. If Figure 7 As shown, the engine 1 is not working, the first clutch unit 8 is disconnected, the second clutch unit 35 and the third clutch unit 36 ​​are closed, and the transmission connection between the first speed gear 32, the third speed gear 34 and the transmission mechanism 5 is disconnected.

[0104] The power generated by the first motor 2 is transmitted to the third clutch unit 36 ​​via the speed change shaft 31 , and then transmitted to the second speed change gear 33 via the third clutch unit 36 ​​; the second speed change gear 33 transmits the power to the transmission mechanism 5 .

[0105] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34, and is transmitted to the second clutch unit 35 through the first speed gear 32, and then is transmitted to the third clutch unit 36 ​​through the second clutch unit 35; the third clutch unit 36 ​​transmits the power to the second speed gear 33, and is transmitted to the transmission mechanism 5 through the second speed gear 33.

[0106] 7. If Figure 8 As shown, the engine 1 is not working, the first clutch unit 8 and the second clutch unit 35 are disconnected, the third clutch unit 36 ​​is closed, the transmission connection between the first speed gear 32 and the transmission mechanism 5 is disconnected, and the third speed gear 34 is connected to the transmission of the transmission mechanism 5.

[0107] The power generated by the first motor 2 is transmitted to the third clutch unit 36 ​​through the speed change shaft 31 , and then transmitted to the second speed change gear 33 through the third clutch unit 36 ​​; and then transmitted to the transmission mechanism 5 through the second speed change gear 33 .

[0108] The power generated by the second motor 4 is transmitted to the transmission mechanism 5 through the third speed change gear 34 .

[0109] 8. If Fig. 9 As shown, the engine 1 is not working, the first clutch unit 8 and the third clutch unit 36 ​​are disconnected, the second clutch unit 35 is closed, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is connected to the transmission of the transmission mechanism 5.

[0110] The power generated by the first motor 2 is transmitted to the second clutch unit 35 through the speed shaft 31, and is transmitted to the first speed gear 32 through the second clutch unit 35, and is then transmitted to the third speed gear 34 through the first speed gear 32; the third speed gear 34 transmits the power to the transmission mechanism 5.

[0111] The power generated by the second motor 4 is transmitted to the transmission mechanism 5 through the third speed change gear 34 .

[0112] 9. If Fig.10 As shown, the first clutch unit 8 is closed, the second clutch unit 35 and the third clutch unit 36 ​​are disconnected, the transmission connection between the third speed change gear 34 and the transmission mechanism 5 is disconnected, and the first speed change gear 32 is connected to the transmission mechanism 5 .

[0113] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34 , and then transmitted to the transmission mechanism 5 through the first speed gear 32 .

[0114] The power generated by the engine 1 is transmitted to the speed change shaft 31 through the first clutch unit 8, driving the first motor 2 to generate electricity.

[0115] 10. Fig.11 As shown, the first motor 2 and the second motor 4 are not working, the first clutch unit 8 and the second clutch unit 35 are closed, the third clutch unit 36 ​​is disconnected, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is connected to the transmission of the transmission mechanism 5.

[0116] The power generated by the engine 1 is transmitted to the speed change shaft 31 through the first clutch unit 8 , and then transmitted to the second clutch unit 35 through the speed change shaft 31 ; the first speed change gear 32 transmits it to the transmission mechanism 5 .

[0117] 11. If Fig.12 As shown, the first clutch unit 8 and the second clutch unit 35 are closed, the third clutch unit 36 ​​is disconnected, the transmission connection between the third speed change gear 34 and the transmission mechanism 5 is disconnected, and the first speed change gear 32 is connected to the transmission mechanism 5 .

[0118] The power generated by the engine 1 is transmitted to the speed change shaft 31 through the first clutch unit 8 , and then transmitted to the second clutch unit 35 through the speed change shaft 31 ; the first speed change gear 32 transmits the power to the transmission mechanism 5 .

[0119] The power generated by the first motor 2 is transmitted to the second clutch unit 35 through the speed change shaft 31 , and then transmitted to the first speed change gear 32 through the second clutch unit 35 ; the first speed change gear 32 transmits the power to the transmission mechanism 5 .

[0120] The power generated by the second motor 4 is transmitted to the first speed gear 32 through the third speed gear 34 ; the first speed gear 32 transmits the power to the transmission mechanism 5 .

[0121] 12. If Fig.13 As shown, the first motor 2 and the engine 1 are not working, the first clutch unit 8, the second clutch unit 35 and the third clutch unit 36 ​​are disconnected, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is connected to the transmission of the transmission mechanism 5.

[0122] The power received by the transmission mechanism 5 can be transmitted to the first speed gear 32, and then transmitted to the third speed gear 34 through the first speed gear 32; the third gear transmits the power to the second motor 4 for generating electricity.

[0123] 13. If Fig.14 As shown, the engine 1 is not working, the first clutch unit 8 and the second clutch unit 35 are disconnected, the third clutch unit 36 ​​is closed, the transmission connection between the third speed gear 34 and the transmission mechanism 5 is disconnected, and the first speed gear 32 is connected to the transmission mechanism 5.

[0124] The power received by the transmission mechanism 5 can be transmitted to the first speed gear 32, and then transmitted to the third speed gear 34 through the first speed gear 32; the third speed gear 34 transmits the power to the second motor 4 for generating electricity.

[0125] The power received by the transmission mechanism 5 can be transmitted to the second speed gear 33, and then transmitted to the third clutch unit 36 ​​through the second speed gear 33; the third clutch unit 36 ​​transmits the power to the speed shaft 31, and then transmits it to the first motor 2 through the speed shaft 31 for generating electricity.

[0126] The power received by the transmission mechanism 5 can be transmitted to the first speed gear 32 and then to the third speed gear 34 through the first speed gear 32; the third speed gear 34 transmits the power to the second motor 4 for generating electricity.

[0127] Optionally, the second clutch is located between the second speed change gear 33 and the third clutch unit 36. Such an arrangement is conducive to improving the compactness of the speed change mechanism 3 to reduce its volume.

[0128] In some of the embodiments of this application, Figure 1 As shown, the first speed gear 32 and the second speed gear 33 are both sleeved on the outer side of the speed shaft 31 and are rotatable relative to the speed shaft 31 .

[0129] It can be understood that the first speed gear 32 and the second speed gear 33 mounted on the outside of the speed shaft 31 will not interfere with the speed shaft 31, and at the same time, the space around the speed shaft 31 can be utilized, thereby improving the space utilization efficiency of the power system of the present application.

[0130] In some embodiments of the present application, the third speed gear 34 is located in the accommodating cavity, and the oil pump 7 is connected to the accommodating cavity.

[0131] It is understandable that the third speed gear 34 always needs to rotate to cooperate with other components when the power system is in multiple working states. By arranging the oil pump 7 and the third speed gear 34 in the same accommodating cavity, the oil pump 7 can lubricate the third speed gear 34 to extend its service life.

[0132] In some of the embodiments of this application, Figure 1 As shown, the end surface of the first speed change gear 32 is fixedly connected to the end surface of the third speed change gear 34 .

[0133] It can be understood that such a configuration is conducive to forming a transmission connection between the third speed gear 34 and the first speed gear 32, thereby facilitating the transmission of power.

[0134] In some of the embodiments of this application, Figure 1As shown, the transmission mechanism 5 includes a transmission shaft 51, a first transmission gear 52, a second transmission gear 53, a third transmission gear 54 and a synchronizer 55. The first transmission gear 52 is meshed with the first speed change gear 32, the second transmission gear 53 is meshed with the second speed change gear 33, the third transmission gear 54 is meshed with the third speed change gear 34, the second transmission gear 53 is transmission-connected to the transmission shaft 51, and the synchronizer 55 is sleeved on the transmission shaft 51 and can move along the axial direction of the transmission shaft 51 so as to be able to transmission-connect the first transmission gear 52 and the transmission shaft 51, and the third transmission gear 54 and the transmission shaft 51.

[0135] It can be understood that the synchronizer 55 realizes the transmission connection between the first transmission gear 52 and the transmission shaft 51, and realizes the transmission connection between the third transmission gear 54 and the transmission shaft 51 by moving, so as to adjust the power generated by the second motor 4 to output a torque that matches the working state of the power system.

[0136] Optionally, the first transmission gear 52 and the third transmission gear 54 are located on both sides of the synchronizer 55 along the axial direction of the transmission shaft 51 , and the synchronizer 55 is in transmission connection with the first transmission gear 52 and the third transmission gear 54 by abutting against them.

[0137] In some of the embodiments of this application, Figure 1 As shown, the transmission shaft 51 is arranged in parallel with the speed change shaft 31 .

[0138] It can be understood that the parallel arrangement of the transmission shaft 51 and the speed change shaft 31 is conducive to forming a stable meshing between the gears of the two to transmit power.

[0139] In some embodiments of the present application, the speed shifting mechanism 3 also includes an input gear 37, and the second motor 4, the input gear 37 and the third speed shifting gear 34 are arranged in sequence along a direction perpendicular to the axial direction of the speed shifting shaft 31, and the input gear 37 is transmission-connected to the second motor 4 and the third speed shifting gear 34.

[0140] It can be understood that the input gear 37 and the third speed gear 34 are arranged in sequence along the direction perpendicular to the axial direction of the speed shaft 31, which can not only realize the transmission connection between the second motor 4 and the third speed gear 34, but also reduce the space occupied by the power system in the width direction, thereby improving the space utilization efficiency of the power system of the present application.

[0141] In some of the embodiments of this application, Figure 1 As shown, the power system includes an output mechanism 6 , and a transmission mechanism 5 is transmission-connected between the speed change mechanism 3 and the output mechanism 6 .

[0142] It can be understood that the output mechanism 6, as a power driving component of the engine 1, the first motor 2 and the second motor 4, can convert the power generated by the above three into driving force for the vehicle to travel, thereby putting the vehicle into a driving state.

[0143] In some of the embodiments of this application, Figure 1 As shown, the output mechanism 6 includes a differential 61 , an axle 62 and wheels 63 , the axle 62 is drivingly connected to the differential 61 and the wheels 63 , and the transmission mechanism 5 is drivingly connected to the differential 61 .

[0144] It can be understood that the differential 61 can transmit power to the wheels 63 through the axle 62, thereby driving the wheels 63 to rotate.

[0145] Optionally, there are two axles 62 and two wheels 63, and an axle 62 and a wheel 63 are arranged on both sides of the differential 61, so that the differential 61 can adjust the power input size of the wheels 63 on both sides, thereby achieving steering.

[0146] In some of the embodiments of this application, Fig.15 and Fig.16 As shown, the oil pump 7 includes a housing 71 and a vane 72 . The housing 71 has an oil passage 701 . The vane 72 is located in the oil passage 701 and can rotate relative to the housing 71 along an axis perpendicular to the extending direction of the oil passage 701 .

[0147] It can be understood that the rotating blades 72 can squeeze the oil in the oil channel 701 , which is conducive to the oil leaving the oil pump 7 and lubricating the transmission mechanism 5 .

[0148] In some of the embodiments of this application, Fig.16 As shown, the oil pump 7 includes a drive shaft 73 , at least a portion of which extends into the oil passage 701 , and the drive shaft 73 can rotate relative to the housing 71 , and the drive shaft 73 is drivingly connected to the blades 72 .

[0149] It is understandable that the driving shaft 73 drives the blades 72 to rotate, so that the oil in the oil passage 701 can be squeezed and transported to the transmission mechanism 5 to lubricate it.

[0150] In some of the embodiments of this application, Fig.16 As shown, the oil pump 7 also includes a first bearing 74 and a second bearing 75. The inner ring of the first bearing 74 and the inner ring of the second bearing 75 are both sleeved on the drive shaft 73 and connected to the drive shaft 73. The blade 72 is located between the first bearing 74 and the second bearing 75. The outer ring of the first bearing 74 and the outer ring of the second bearing 75 are both connected to the housing 71.

[0151] It is understandable that the first bearing 74 and the second bearing 75 can replace the sliding friction between the drive shaft 73 and the housing 71 with rolling friction. By reducing the interference of friction on the drive shaft 73, the working performance and service life of the drive shaft 73 of the present application are improved. At the same time, the first bearing 74 and the second bearing 75 can improve the support stability of the drive shaft 73, which is conducive to the drive shaft 73 driving the blade 72 to rotate.

[0152] In some of the embodiments of this application, Figure 1 As shown, the power system further includes a power source 9, and the first motor 2 and the second motor 4 are electrically connected to the power source 9 respectively.

[0153] It is understandable that the power supply 9 can recover the power generated by the first motor 2 and the second motor 4 when they are working, so as to power the first motor 2 and the second motor 4 to work.

[0154] Optionally, the power supply 9 is arranged between the first motor 2 and the engine 1 to improve the structural stability of the power system of the present application, which is beneficial for the power system of the present application to be arranged in the vehicle body.

[0155] The third aspect of the present application provides a power system, such as Figure 1 As shown, the power system includes an engine 1, a first motor 2, and a second motor 4. A speed change mechanism 3 includes a speed change shaft 31, and the engine 1, the first motor 2, and the second motor 4 are respectively connected to the speed change shaft 31 in a transmission manner, and the speed change shaft 31 is provided with a speed change gear; a transmission mechanism 5 includes a transmission shaft 51, and the transmission shaft 51 is provided with a transmission gear; at least two groups of shift gear sets with different speed ratios are formed between the speed change gear on the speed change shaft 31 and the transmission gear on the transmission shaft 51; a speed change coupling mechanism 11 is provided between the speed change shaft 31 and at least one speed change gear, and the speed change coupling mechanism 11 is used to make the speed change shaft 31 is coupled or disconnected with the transmission gear; a transmission coupling mechanism 10 is arranged between the transmission shaft 51 and at least one transmission gear, and the transmission coupling mechanism 10 is used to couple or disconnect the transmission shaft 51 with the transmission gear; it also includes an oil pump 7, a first oil circuit 76 and a second oil circuit 77, the oil pump 7 is connected to the first oil circuit 76 and the second oil circuit 77 respectively, the first oil circuit 76 is connected to the speed coupling mechanism 11 and / or the transmission coupling mechanism 10, and is used to drive the speed coupling mechanism 11 and / or the transmission coupling mechanism 10. The second oil circuit 77 is used to lubricate the transmission structure 12.

[0156] It is understandable that the power output by the engine 1, the first motor 2 and the second motor 4 can be adjusted by the speed change mechanism 3. The shift gear set formed by the speed change gear and the transmission gear can increase and decrease the power torque output by the engine 1, the first motor 2 and the second motor 4, and thus adapt to the driving conditions. The speed change coupling mechanism 11 controls the power coupling and disconnection between the speed change shaft 31 and the speed change gear, which is conducive to the power system selecting a suitable speed change gear to output power. The transmission coupling mechanism 10 controls the coupling and disconnection between the transmission shaft 51 and the transmission gear, which is conducive to the power system outputting the adjusted power through the transmission mechanism 5. On the one hand, the oil pump 7 lubricates the speed change mechanism 3, which can reduce the wear of the speed change mechanism 3 when adjusting the power, and can extend the working life of the speed change mechanism 3. On the other hand, as the power source of the speed change coupling mechanism 11, it can improve the structural compactness of the power system of the present application. The oil pump 7 is connected to the speed change coupling mechanism 11 and / or the transmission coupling mechanism 10 through the first oil circuit 76, and can provide driving force for the speed change coupling mechanism 11 and / or the transmission coupling mechanism 10, so as to realize the switching of power transmission between the two. The second oil circuit 77 is used for lubricating the transmission structure 12 , which is beneficial to improving the working condition of the speed change mechanism 3 .

[0157] In the embodiment of the present application, the transmission structure 12 may refer to two components that can move relative to each other. The transmission structure 12 may refer to the crankshaft main shaft diameter and main bearing, crank pin and connecting rod bearing, cam journal and camshaft bearing, and piston ring and cylinder wall. The transmission structure 12 may also refer to the structures such as the various kinematic pairs and transmission gear pairs of the valve mechanism. Under the action of lubrication, the friction generated by the above structures can be reduced and the heat generated can be transferred out.

[0158] In some embodiments of the present application, the oil pump 7 includes a mechanical pump.

[0159] In the embodiment of the present application, the mechanical pump is installed inside the gearbox and driven by a wheel or a motor, including but not limited to coaxial direct drive, gear drive, sprocket chain drive. The mechanical pump is used to cool and lubricate the speed change mechanism 3.

[0160] In some embodiments of the present application, the oil pump 7 includes an electric pump.

[0161] In the embodiment of the present application, the electric pump is driven by its own motor, and the driving methods include but are not limited to coaxial direct drive, gear drive, sprocket chain drive. The electric pump is mainly used for high-pressure clutch control, gear shifting, etc. At the same time, the electric pump is connected to the cooling and lubricating oil circuit through the switch valve.

[0162] In some embodiments of the present application, the oil pump 7 includes a mechanical pump and an electric pump.

[0163] In the embodiment of the present application, the electric pump is driven by its own motor. The mechanical pump is installed inside the gearbox and driven by the wheel or motor, and the driving method includes but is not limited to coaxial direct drive, gear drive, sprocket chain drive. The mechanical pump is used for cooling and lubrication. The electric pump is mainly used for high-pressure control of clutch, shifting, etc., and at the same time, the electric pump is connected to the cooling and lubricating oil circuit through the switch valve.

[0164] In some of the embodiments of this application, Figure 1 As shown, the power system includes a first clutch unit 8 , the engine 1 is connected to the speed change shaft 31 via the first clutch unit 8 , and the oil pump 7 is connected to the first clutch unit 8 to provide driving force for the first clutch unit 8 .

[0165] It can be understood that the engine 1 is connected to the speed shaft 31 through the first clutch unit 8, so that the first clutch unit 8 can disconnect and connect the power transmission between the engine 1 and the speed shaft 31, which is conducive to the power system of the present application to form multiple power transmission paths. Specifically, when the first motor 2 and the second motor 4 are working, the power transmission between the engine 1 and the speed shaft 31 is disconnected by the first clutch unit 8, which can reduce the drag of the engine 1 on the speed shaft 31, thereby improving the power output effect of the power system of the present application.

[0166] At the same time, the oil pump 7 provides driving force for the first clutch unit 8, so that it can disconnect and connect the engine 1 and the speed change shaft 31 under the action of the driving force, so as to reduce the drag of the engine 1 on the speed change shaft 31 when not working.

[0167] In some embodiments of the present application, the oil pressure in the first oil circuit 76 is greater than the oil pressure in the second oil circuit 77. The oil pressure in the first oil circuit 76 is greater than the oil pressure in the second oil circuit 77, which is conducive to the oil output by the oil pump 7 to adapt to the working conditions of the first clutch unit 8 and the working conditions of the speed change mechanism 3.

[0168] In some of the embodiments of this application, Figure 1 As shown, the speed gear includes a first speed gear 32, a second speed gear 33 and a third speed gear 34, the transmission gear includes a first transmission gear 52, a second transmission gear 53 and a third transmission gear 54, the shift gear set includes a first shift gear set, a second shift gear set and a third shift gear set, the first speed gear 32 is meshed with the first transmission gear 52 to form a first shift gear set, the second speed gear 33 is meshed with the second transmission gear 53 to form a second shift gear set, and the third speed gear 34 is meshed with the third transmission gear 54 to form a third shift gear set.

[0169] It can be understood that the first shift gear set, the second shift gear set and the third shift gear set can all output the power of the engine 1, the first motor 2 and the second motor 4. At the same time, the speed ratios of the three are different. By selecting the corresponding shift gear set to output power, the power torque output by the engine 1, the first motor 2 and the second motor 4 can also be adjusted to adapt to the working conditions of the power system.

[0170] In some of the embodiments of this application, Figure 1 As shown, the speed coupling mechanism 11 includes a second clutch unit 35 and a third clutch unit 36, the first speed gear 32 is fixedly connected to the third speed gear 34, the first speed gear 32 is connected to the speed shaft 31 through the second clutch unit 35, and the second speed gear 33 is connected to the speed shaft 31 through the third clutch unit 36.

[0171] It can be understood that the first speed gear 32 and the third speed gear 34 are fixedly connected. When the two output power to the transmission mechanism 5 separately, the other can be set to idle to achieve power transmission, or they can output power to the transmission mechanism 5 at the same time to increase the power output mode. The second speed gear 33 is connected to the speed change shaft 31 through the third clutch unit 36, and the power output of the two can be switched through the third clutch unit 36, which is conducive to increasing the power output mode of the power system of the present application.

[0172] In some of the embodiments of this application, Figure 1 As shown, the transmission coupling mechanism 10 includes a synchronizer 55 , which can move on the transmission shaft 51 to connect the transmission shaft 51 with the second transmission gear 53 and connect the transmission shaft 51 with the third transmission gear 54 .

[0173] In the embodiment of the present application, the synchronizer 55 can synchronize the rotation speeds of the transmission shaft 51 and the second transmission gear 53, as well as the transmission shaft 51 and the third transmission gear 54, to achieve power transmission, and it achieves synchronization by connecting the transmission shaft 51 and the above two. The setting of the synchronizer 55 can increase the smoothness of the power system when switching the gear set to transmit power, and can also simplify the structure of the transmission mechanism 5.

[0174] The third aspect of the present application provides a power system, such as Figure 1As shown, the power system includes an engine 1, a first motor 2, a speed change mechanism 3, a second motor 4, a transmission mechanism 5, an output mechanism 6 and an oil pump 7. The engine 1 is arranged opposite to the first motor 2. The engine 1 is connected to one end of the speed change mechanism 3 through a first clutch unit 8. The first motor 2 is connected to the other end of the speed change mechanism 3 by transmission. The second motor 4 is connected to the speed change mechanism 3 by transmission, and the second motor 4 is located between the engine 1 and the first motor 2. The transmission mechanism 5 is connected to the speed change mechanism 3 and the output mechanism 6 by transmission. The oil pump 7 is used to lubricate the speed change mechanism 3.

[0175] It is understandable that the oil pump 7 lubricates the speed change mechanism 3, which is beneficial to maintaining the speed change mechanism 3 and improving the service life of the power system of the present application. The relatively arranged engine 1 and the first motor 2 can be arranged along the width direction of the vehicle body to improve the utilization efficiency of the vehicle body in the width direction, and at the same time help balance the center of gravity of the vehicle as a whole. The speed change mechanism 3 and the second motor 4 are located between the engine 1 and the first motor 2, which can not only improve the uniformity of the weight distribution of each component of the power system on the vehicle body, but also improve the compactness of the power system, thereby improving the space utilization efficiency of the vehicle body.

[0176] A fourth aspect of the present application provides a car, which includes a power system as described in the above embodiment.

[0177] It can be understood that, due to the adoption of the power system of the above-mentioned embodiment, the automobile of the present application has the same technical effects as the above-mentioned embodiment, which will not be described in detail here.

[0178] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0179] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0180] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A power system, characterized in that: The power system comprises an engine (1), a first motor (2), a speed change mechanism (3), a second motor (4) and an oil pump (7), wherein: The engine (1) is connected to the speed change mechanism (3) via a first clutch unit (8); The first motor (2) is transmission-connected to the speed change mechanism (3); The second motor (4) is transmission-connected to the speed change mechanism (3), and the second motor (4) is located between the engine (1) and the first motor (2); The oil pump (7) is used at least to drive the speed change mechanism (3) and lubricate the transmission structure (12).

2. The power system according to claim 1, characterized in that: The power system comprises a transmission mechanism (5), and the transmission mechanism (5) is transmission-connected to the speed change mechanism (3).

3. The power system according to claim 2, characterized in that: The speed change mechanism (3) comprises a speed change shaft (31), a first speed change gear (32), a second speed change gear (33), a third speed change gear (34), a second clutch unit (35) and a third clutch unit (36); the first speed change gear (32) is connected to the speed change shaft (31) by transmission through the second clutch unit (35); the second speed change gear (33) is connected to the speed change shaft (31) by transmission through the third clutch unit (36); the third speed change gear (34) is connected to the first speed change gear (32) and the second motor (4); the second speed change gear (33) is connected to the transmission mechanism (5); both the first speed change gear (32) and the third speed change gear (34) can be connected to the transmission mechanism (5); one end of the speed change shaft (31) is connected to the engine (1) by the first clutch unit (8); the other end of the speed change shaft (31) is connected to the first motor (2) by transmission.

4. The power system according to claim 3, characterized in that: The first speed change gear (32) and the second speed change gear (33) are both sleeved on the outside of the speed change shaft (31) and are rotatable relative to the speed change shaft (31).

5. The power system according to claim 3, characterized in that: The third speed change gear (34) is located in the accommodating chamber, and the oil pump (7) is in communication with the accommodating chamber.

6. The power system according to claim 3, characterized in that: The end surface of the first speed change gear (32) is fixedly connected to the end surface of the third speed change gear (34).

7. The power system according to claim 6, characterized in that: The transmission mechanism (5) comprises a transmission shaft (51), a first transmission gear (52), a second transmission gear (53), a third transmission gear (54) and a synchronizer (55); the first transmission gear (52) is meshed with the first speed change gear (32); the second transmission gear (53) is meshed with the second speed change gear (33); the third transmission gear (54) is meshed with the third speed change gear (34); the second transmission gear (53) is transmission-connected with the transmission shaft (51); the synchronizer (55) is sleeved on the transmission shaft (51) and can move along the axial direction of the transmission shaft (51) so as to transmission-connect the first transmission gear (52) with the transmission shaft (51) and transmission-connect the third transmission gear (54) with the transmission shaft (51).

8. The power system according to claim 3, characterized in that: The speed change mechanism (3) further comprises an input gear (37); the second motor (4), the input gear (37) and the third speed change gear (34) are arranged in sequence along a direction perpendicular to the axial direction of the speed change shaft (31); the input gear (37) is drivingly connected to the second motor (4) and the third speed change gear (34).

9. The power system according to claim 2, characterized in that: The power system further comprises an output mechanism (6), and the transmission mechanism (5) is transmission-connected between the speed change mechanism (3) and the output mechanism (6).

10. The power system according to claim 9, characterized in that: The output mechanism (6) comprises a differential (61), a wheel axle (62) and a wheel (63); the wheel axle (62) is drivingly connected to the differential (61) and the wheel (63); and the transmission mechanism (5) is drivingly connected to the differential (61).

11. The power system according to claim 1, characterized in that: The oil pump (7) comprises a housing (71) and a blade (72); the housing (71) has an oil passage (701); the blade (72) is located in the oil passage (701) and can rotate relative to the housing (71) along an axis perpendicular to the extending direction of the oil passage (701).

12. The power system according to claim 11, characterized in that: The oil pump (7) comprises a drive shaft (73), at least a portion of which extends into the oil passage (701), the drive shaft (73) being rotatable relative to the housing (71), and the drive shaft (73) being transmission-connected to the blades (72).

13. The power system according to claim 12, characterized in that: The oil pump (7) further comprises a first bearing (74) and a second bearing (75), wherein the inner ring of the first bearing (74) and the inner ring of the second bearing (75) are both sleeved on the drive shaft (73) and connected to the drive shaft (73), the blade (72) is located between the first bearing (74) and the second bearing (75), and the outer ring of the first bearing (74) and the outer ring of the second bearing (75) are both connected to the housing (71).

14. The power system according to claim 1, characterized in that: The power system further comprises a power source (9), and the first motor (2) and the second motor (4) are respectively electrically connected to the power source (9).

15. A power system, characterized in that: The power system comprises: Engine (1); A first motor (2) and a second motor (4); A speed change mechanism (3) comprising a speed change shaft (31), the engine (1), the first motor (2) and the second motor (4) being respectively connected in driving connection with the speed change shaft (31), and the speed change shaft (31) being provided with a speed change gear; A transmission mechanism (5) comprises a transmission shaft (51), wherein the transmission shaft (51) is provided with a transmission gear; At least two shift gear sets with different speed ratios are formed between the speed change gear on the speed change shaft (31) and the transmission gear on the transmission shaft (51); A speed-changing coupling mechanism (11) is provided between the speed-changing shaft (31) and at least one speed-changing gear, and the speed-changing coupling mechanism (11) is used to enable the speed-changing shaft (31) to be dynamically coupled or disconnected from the speed-changing gear; a transmission coupling mechanism (10) is provided between the transmission shaft (51) and at least one transmission gear, and the transmission coupling mechanism (10) is used to enable the transmission shaft (51) to be dynamically coupled or disconnected from the transmission gear; The invention also comprises an oil pump (7), a first oil circuit (76) and a second oil circuit (77); the oil pump (7) is connected to the first oil circuit (76) and the second oil circuit (77) respectively; the first oil circuit (76) is connected to the speed-changing coupling mechanism (11) and / or the transmission coupling mechanism (10) and is used to drive the speed-changing coupling mechanism (11) and / or the transmission coupling mechanism (10); the second oil circuit (77) is used to lubricate the transmission structure (12).

16. The power system according to claim 15, characterized in that: The oil pump (7) includes at least one of a mechanical pump and an electric pump.

17. The power system according to claim 15, characterized in that: The power system comprises a first clutch unit (8), the engine (1) and the speed change shaft (31) are connected via the first clutch unit (8), and the oil pump (7) is connected to the first clutch unit (8) so as to provide driving force for the first clutch unit (8).

18. The power system according to claim 15, characterized in that: The speed gear comprises a first speed gear (32), a second speed gear (33) and a third speed gear (34); the transmission gear comprises a first transmission gear (52), a second transmission gear (53) and a third transmission gear (54); the shifting gear set comprises a first shifting gear set, a second shifting gear set and a third shifting gear set; the first speed gear (32) is meshed with the first transmission gear (52) to form the first shifting gear set; the second speed gear (33) is meshed with the second transmission gear (53) to form the second shifting gear set; the third speed gear (34) is meshed with the third transmission gear (54) to form the third shifting gear set.

19. The power system according to claim 18, characterized in that: The speed change coupling mechanism (11) comprises a second clutch unit (35) and a third clutch unit (36); the first speed change gear (32) is fixedly connected to the third speed change gear (34); the first speed change gear (32) is connected to the speed change shaft (31) via the second clutch unit (35); and the second speed change gear (33) is connected to the speed change shaft (31) via the third clutch unit (36).

20. The power system according to claim 18, characterized in that: The transmission coupling mechanism (10) comprises a synchronizer (55) which is movable on the transmission shaft (51) so as to connect the transmission shaft (51) and the second transmission gear (53) and to connect the transmission shaft (51) and the third transmission gear (54).

21. The power system according to claim 15, characterized in that: The oil pressure of the first oil passage (76) is greater than the oil pressure of the second oil passage (77).

22. A power system, characterized in that: The power system comprises an engine (1), a first motor (2), a speed change mechanism (3), a second motor (4), a transmission mechanism (5), an output mechanism (6) and an oil pump (7), wherein: The engine (1) and the first motor (2) are arranged opposite to each other; The engine (1) is connected to one end of the speed change mechanism (3) via a first clutch unit (8); The first motor (2) is drivingly connected to the other end of the speed change mechanism (3); The second motor (4) is transmission-connected to the speed change mechanism (3), and the second motor (4) is located between the engine (1) and the first motor (2); The transmission mechanism (5) is transmission-connected to the speed change mechanism (3) and the output mechanism (6); The oil pump (7) is used to lubricate the speed change mechanism (3).

23. A car, characterized in that: The automobile comprises a power system as claimed in any one of claims 1 to 22.

Images