Powertrain and vehicle

Abstract

The present application relates to the technical field of vehicle power. Disclosed are a powertrain and a vehicle. The powertrain comprises: an engine, which is drivingly connected to one end of a variable-speed shaft by means of a first clutch unit; a first motor, which is spaced apart from the variable-speed shaft in the radial direction of the variable-speed shaft, the first motor being drivingly connected to a variable-speed gear set; and a second motor, which is located on the outer side of the first clutch unit, connected to the first clutch unit and drivingly connected to the variable-speed shaft, the orthographic projection of the first motor on a projection plane and the orthographic projection of the variable-speed shaft on the projection plane at least partially overlapping each other. The second motor being located on the outer side of the first clutch unit and connected to the first clutch unit helps to improve the compactness of the powertrain of the present application, so as to reduce the size thereof. The orthographic projection of the first motor on the projection plane and the orthographic projection of the variable-speed shaft on the projection plane at least partially overlapping each other can improve the compactness of an engine system of the present application, so as to improve the efficiency of utilizing vehicle interior spaces.

Description

Power system and automobile

[0001] This application claims priority to Chinese patent application No. 202410348036.2, filed on March 26, 2024, entitled “A Power System and Automobile,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of automobile power technology, and in particular to a power system and an automobile. Background Art

[0003] A car is a means of transportation that drives the wheels through a series of transmission structures to carry the user to the destination.

[0004] A car generally includes a power source, a transmission structure and wheels. The power source generates power and transmits appropriate power to the wheels through the transmission and integration of the transmission structure, causing the wheels to rotate.

[0005] In the related art, the power source, transmission structure and speed change structure are arranged loosely, which occupies the space inside the car.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a power system and a vehicle to improve the utilization efficiency of the vehicle's interior space. The technical solution is as follows:

[0008] In one aspect, the present application provides a power system, which includes an engine, a first clutch unit, a speed-changing shaft, a first motor, a second motor, a speed-changing gear set, a second clutch unit, and an output mechanism. The engine is connected to one end of the speed-changing shaft via the first clutch unit. The first motor and the speed-changing shaft are arranged at intervals along the radial direction of the speed-changing shaft, and the first motor is connected to the speed-changing gear set. The second motor is located on the outside of the first clutch unit and is connected to the first clutch unit, and is connected to the speed-changing shaft. The orthographic projection of the first motor on the projection plane at least partially overlaps with the orthographic projection of the speed-changing shaft on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first motor and the speed-changing shaft. The second clutch unit connects the speed-changing gear set and the speed-changing shaft. The speed-changing gear set is connected to the output mechanism.

[0009] Optionally, the first clutch unit includes an active part, a driven part and a coupling part, the active part is connected to the engine, the driven part is connected to the speed change shaft, and the coupling part is used to connect the driven part to the active part in a transmission manner.

[0010] Optionally, the joint portion includes a filling cavity and a return spring, the filling cavity is located on the side of the driven portion away from the joint portion and is capable of expanding to drive the driven portion closer to the active portion, and the return spring is located between the active portion and the driven portion to provide a return force to the driven portion away from the active portion.

[0011] Optionally, the speed gear set includes a first speed gear, a second speed gear and a third speed gear, the first speed gear, the second speed gear and the third speed gear are all sleeved on the speed shaft, and the first speed gear, the second speed gear and the third speed gear are all transmission-connected to the second clutch unit.

[0012] Optionally, the speed change shaft includes a first section and a second section, the first section is connected to the first clutch unit and can be driven by the second motor, at least a portion of the second section extends into the first section and can rotate relative to the first section, the second speed gear is sleeved on the outside of the second section and can rotate relative to the second section, the first speed gear and the third speed gear are both sleeved on the outside of the second section and are transmission-connected to the second section, and the second clutch unit is used for transmission connection between the second speed gear and the first section and transmission connection between the second section and the first section.

[0013] Optionally, the second clutch unit includes a clutch inner hub, a clutch outer hub and a piston, the clutch inner hub is connected to the first section, the clutch outer hub is connected to the second speed gear so as to be able to drive the second speed gear and the first section, and the piston is connected to the second section and can be able to drive the second section and the first section.

[0014] Optionally, the output mechanism includes a first output gear, a second output gear and a third output gear, the first output gear is engaged with the first speed change gear, the second output gear is engaged with the second speed change gear, and the third output gear is engaged with the third speed change gear.

[0015] Optionally, the output mechanism includes an output shaft and a synchronizer, the first output gear, the second output gear and the third output gear are arranged at intervals along the axial direction of the output shaft, the second output gear is transmission-connected to the output shaft, and the synchronizer is capable of connecting and disconnecting the first output gear and the output shaft, and connecting and disconnecting the third output gear and the output shaft.

[0016] Optionally, the synchronizer is movable in the axial direction of the output shaft so as to be connected to the first output gear and the third output gear.

[0017] Optionally, the first motor has an input gear, and the input gear is transmission-connected to the speed-changing gear set.

[0018] Optionally, the power system further includes an idler gear, and the input gear, the idler gear and the speed change gear set are meshed in sequence along the radial direction of the speed change shaft.

[0019] Optionally, the orthographic projection of the output mechanism on the projection plane at least partially overlaps with the orthographic projection of the first motor on the projection plane.

[0020] Optionally, the second motor has a stator, which is arranged at intervals along the circumference of the first clutch unit, and is used to drive the speed change shaft to rotate.

[0021] On the other hand, the present application provides an automobile, comprising a power system, comprising an engine, a first clutch unit, a speed-changing shaft, a first motor, a second motor, a speed-changing gear set, a second clutch unit, and an output mechanism. The engine is transmission-connected to one end of the speed-changing shaft via the first clutch unit. The first motor and the speed-changing shaft are arranged at intervals along the radial direction of the speed-changing shaft, and the first motor is transmission-connected to the speed-changing gear set. The second motor is located outside the first clutch unit, is connected to the first clutch unit, and is transmission-connected to the speed-changing shaft. The orthographic projection of the first motor on a projection plane at least partially overlaps with the orthographic projection of the speed-changing shaft on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first motor and the speed-changing shaft. The second clutch unit connects the speed-changing gear set and the speed-changing shaft. The speed-changing gear set is transmission-connected to the output mechanism.

[0022] Optionally, the first clutch unit includes an active part, a driven part and a coupling part, the active part is connected to the engine, the driven part is connected to the speed change shaft, and the coupling part is used to connect the driven part to the active part in a transmission manner.

[0023] Optionally, the joint portion includes a filling cavity and a return spring, the filling cavity is located on the side of the driven portion away from the joint portion and is capable of expanding to drive the driven portion closer to the active portion, and the return spring is located between the active portion and the driven portion to provide a return force to the driven portion away from the active portion.

[0024] Optionally, the speed gear set includes a first speed gear, a second speed gear and a third speed gear, the first speed gear, the second speed gear and the third speed gear are all sleeved on the speed shaft, and the first speed gear, the second speed gear and the third speed gear are all transmission-connected to the second clutch unit.

[0025] Optionally, the speed change shaft includes a first section and a second section, the first section is connected to the first clutch unit and can be driven by the second motor, at least a portion of the second section extends into the first section and can rotate relative to the first section, the second speed gear is sleeved on the outside of the second section and can rotate relative to the second section, the first speed gear and the third speed gear are both sleeved on the outside of the second section and are transmission-connected to the second section, and the second clutch unit is used for transmission connection between the second speed gear and the first section and transmission connection between the second section and the first section.

[0026] Optionally, the second clutch unit includes a clutch inner hub, a clutch outer hub and a piston, the clutch inner hub is connected to the first section, the clutch outer hub is connected to the second speed gear so as to be able to drive the second speed gear and the first section, and the piston is connected to the second section and can be able to drive the second section and the first section.

[0027] The beneficial effects of the technical solutions provided by the embodiments of the present application include at least the following: the speed-changing gear set, via the speed-changing shaft, can adjust the power from the first motor, the second motor, and the engine, and output it to the output mechanism. The second motor is located outside the first clutch unit and connected to the first clutch unit, which helps improve the compactness of the power system of the present application and reduce its volume. The orthographic projection of the first motor on the projection plane at least partially overlaps with the orthographic projection of the speed-changing shaft on the projection plane, which can improve the compactness of the power system of the present application and enhance the efficiency of vehicle interior space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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 any creative work.

[0029] FIG1 is a schematic structural diagram of a power system provided in an embodiment of the present application;

[0030] FIG2 is a schematic full cross-sectional view of a power system provided in an embodiment of the present application;

[0031] FIG3 is a detailed schematic diagram of point A in FIG2 ;

[0032] FIG4 is a detailed schematic diagram of point B in FIG2 ;

[0033] FIG5 is a detailed schematic diagram of point C in FIG2 .

[0034] The reference numerals in the figure respectively represent: 1. engine; 2. first clutch unit; 21. driving part; 22. driven part; 23. engaging part; 2301. filling chamber; 231. return spring; 3. speed change shaft; 31. first section; 32. second section; 4. first motor; 41. input gear; 5. speed change gear set; 51. first speed change gear; 52. second speed change gear; 53. third speed change gear; 6. second motor; 61. stator; 7. second clutch unit; 71. clutch inner hub; 72. clutch outer hub; 73. piston; 8. output mechanism; 81. first output gear; 82. second output gear; 83. third output gear; 84. output shaft; 85. synchronizer; 9. idler gear. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0036] The first aspect of the present application provides a power system, as shown in Figures 1 and 2, which includes an engine 1, a first clutch unit 2, a speed-changing shaft 3, a first motor 4, a second motor 6, a speed-changing gear set 5, a second clutch unit 7, and an output mechanism 8. The engine 1 is transmission-connected to one end of the speed-changing shaft 3 via the first clutch unit 2. The first motor 4 and the speed-changing shaft 3 are arranged radially with intervals, and the first motor 4 is transmission-connected to the speed-changing gear set 5. The second motor 6 is located outside the first clutch unit 2, is connected to the first clutch unit 2, and is transmission-connected to the speed-changing shaft 3. The orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-changing shaft 3 on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first motor 4 and the speed-changing shaft 3. The second clutch unit 7 connects the speed-changing gear set 5 and the speed-changing shaft 3. The speed-changing gear set 5 is transmission-connected to the output mechanism 8.

[0037] It will be appreciated that the speed-change gear set 5, via the speed-change shaft 3, can adjust the power from the first motor 4, the second motor 6, and the engine 1, and output it to the output mechanism 8. The second motor 6 is located outside the first clutch unit 2 and is connected to the first clutch unit 2, which helps improve the compactness of the power system of the present application and reduce its size. The orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-change shaft 3 on the projection plane, which can improve the compactness of the power system of the present application and enhance the efficiency of vehicle interior space utilization.

[0038] In the embodiment of the present application, the second motor 6 is located outside the first clutch unit 2 and connected to the first clutch unit 2, which helps improve the compactness of the power system of the present application and reduce its volume. Specifically, when the second motor 6 is in the above position, it can use the speed change shaft 3 as its rotor and directly drive the speed change shaft 3. This eliminates the need to arrange a rotor shaft for the second motor 6, thereby improving the compactness of the power system of the present application and reducing its volume.

[0039] In the embodiment of the present application, the orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-shift shaft 3 on the projection plane, which is beneficial to reducing the length of the power system of the present application in the axial direction of the speed-shift shaft 3. Specifically, the length of the power system of the present application in the axial direction of the speed-shift shaft 3 generally includes the length of the engine 1 in this direction, the length of the first clutch unit 2 in this direction, the length of the first motor 4 in this direction, and the length of the speed-shift shaft 3 in this direction. Therefore, the orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-shift shaft 3 on the projection plane, which can make the length of the first motor 4 in this direction and the length of the speed-shift shaft 3 in this direction overlap. The overlapping portion of the two can reduce the length occupied by the power system of the present application in this direction, so as to improve the compactness of the power system of the present application, thereby reducing its volume.

[0040] In the embodiment of the present application, the second clutch unit 7 connects the speed-changing gear set 5 and the speed-changing shaft 3, and can transmit the power transmitted by the first motor 4, the second motor 6, and the engine 1 to the output mechanism 8. Specifically, the second clutch unit 7 can form a transmission connection between the speed-changing gear and the speed-changing shaft 3, thereby transmitting the power of the above three. It can also form a transmission connection between different components of the speed-changing shaft 3, so that the speed-changing gear set 5 can output power that matches the operating conditions of the output mechanism 8.

[0041] In an embodiment of the present application, the engine 1 is connected to one end of the speed shaft 3 through the first clutch unit 2, so that the engine 1, the second motor 6 and the speed shaft 3 are roughly arranged along the circumference of the speed shaft 3, and the orthographic projection of the first motor 4 on the projection plane is separated from the orthographic projection of the second motor 6 on the projection plane, which can improve the compactness of the power system of the present application. Such an arrangement is conducive to the first motor 4 being close to the speed shaft 3 in the radial direction of the speed shaft 3, thereby reducing the length of the power system of the present application in this direction.

[0042] In an embodiment of the present application, the power system may further include an electric pump and a mechanical pump. The electric pump may be used to drive oil to lubricate multiple components of the power system, and the mechanical pump may be used to drive oil to lubricate multiple components of the power system. The power system's travel speed during lubrication with the electric pump is lower than during lubrication with the mechanical pump.

[0043] In the embodiment of the present application, the power system of the present application integrates the first clutch unit 2 and the second motor 6 to reduce the space occupied by the second motor 6. At the same time, the first motor 4 is arranged close to the speed change shaft 3 in the radial direction of the speed change shaft 3 to reduce the length of the power system in the radial direction of the speed change shaft 3. This can improve the compactness of the power system of the present application and reduce its volume.

[0044] In the embodiment of the present application, when the first motor 4 transmits power to the speed-changing shaft 3 , the second motor 6 can act as a generator to convert kinetic energy into electrical energy.

[0045] In the embodiment of the present application, when the engine 1 transmits power to the speed-changing shaft 3 , the second motor 6 can act as a generator to convert kinetic energy into electrical energy.

[0046] In the embodiment of the present application, the projection plane may be parallel to the plane passing through the axis of the speed-shift shaft 3 .

[0047] In some embodiments of the present application, as shown in Figure 3, the first clutch unit 2 includes an active part 21, a driven part 22 and a coupling part 23. The active part is connected to the engine 1, the driven part 22 is connected to the speed change shaft 3, and the coupling part 23 is used to connect the driven part 22 to the active part 21 in transmission.

[0048] It will be understood that the active portion 21 is connected to the engine 1 and can be driven by the engine 1 and rotate with the engine 1. The driven portion 22 is connected to the speed change shaft 3 and can transmit power from the active portion 21 to the speed change shaft 3. When the engine 1 needs to drive the speed change shaft 3 to rotate, the coupling portion 23 can connect the driven portion 22 with the active portion 21, thereby transmitting the power of the engine 1 to the speed change shaft 3, so that the power of the engine 1 can be adjusted by the speed change gear set 5 and output to the output mechanism 8.

[0049] In the embodiment of the present application, the coupling portion 23 can drive the driven portion 22 to move toward the active portion 21, thereby forming a transmission connection between the driven portion 22 and the active portion 21, or it can drive the active portion 21 to move toward the driven portion 22, thereby forming a transmission connection between the active portion 21 and the driven portion 22.

[0050] In some embodiments of the present application, as shown in Figure 3, the coupling portion 23 includes a filling cavity 2301 and a return spring 231. The filling cavity 2301 is located on the side of the driven portion 22 away from the coupling portion 23 and is capable of expanding to drive the driven portion 22 close to the active portion 21. The return spring 231 is located between the active portion 21 and the driven portion 22 to provide a return force to the driven portion 22 away from the active portion 21.

[0051] It is understood that when the first clutch unit 2 is closed, the filling chamber 2301 can be filled with a liquid such as gas or oil. The filled filling chamber 2301 can expand, generating pressure on the driven portion 22. Under the action of this pressure, the driven portion 22 abuts the active portion 21, enabling power transmission between the two. Simultaneously, the return spring 231 is compressed by this pressure, generating a return force. When the first clutch unit 2 is disengaged, the gas or oil liquid leaves the filling chamber 2301. The return force of the return spring 231 drives the driven portion 22 to separate from the active portion 21, terminating the power transmission between the two.

[0052] In some embodiments of the present application, as shown in Figure 4, the speed gear set 5 includes a first speed gear 51, a second speed gear 52 and a third speed gear 53. The first speed gear 51, the second speed gear 52 and the third speed gear 53 are all sleeved on the speed shaft 3, and the first speed gear 51, the second speed gear 52 and the third speed gear 53 are all connected to the second clutch unit 7 in transmission.

[0053] It is understood that the first speed gear 51, the second speed gear 52, and the third speed gear 53 can be combined with the output mechanism 8 to form different gears and transmit different power. By controlling the operating state of the first clutch unit 2 and the second clutch unit 7, the speed gear set 5 can output power from the engine 1, the first motor 4, and the second motor 6 to the output gears, and match this power to the operating conditions of the power system.

[0054] In the embodiment of the present application, the number of teeth of the first speed gear 51 is smaller than the number of teeth of the second speed gear 52 , and the number of teeth of the second speed gear 52 is smaller than the number of teeth of the third speed gear 53 .

[0055] In the embodiment of the present application, the third speed change gear 53 is transmission-connected to the first motor 4 to transmit power from the first motor 4 .

[0056] In some embodiments of the present application, as shown in Figure 2, the speed change shaft 3 includes a first section 31 and a second section 32, the first section 31 is connected to the first clutch unit 2 and can be driven by the second motor 6, at least a portion of the second section 32 extends into the first section 31 and can rotate relative to the first section 31, the second speed gear 52 is sleeved on the outside of the second section 32 and can rotate relative to the second section 32, the first speed gear 51 and the third speed gear 53 are both sleeved on the outside of the second section 32 and are transmission-connected to the second section 32, and the second clutch unit 7 is used to transmission-connect the second speed gear 52 and the first section 31 and the second section 32 and the first section 31.

[0057] In this embodiment of the present application, the first section 31 can directly transmit power from the second motor 6 or transmit power from the engine 1 via the first clutch unit 2. The power transmitted by the first section 31 can be integrated by the second clutch unit 7 and output to the output mechanism 8. The second section 32 can transmit power generated by the first motor 4 and transmit it to the output mechanism 8 via the second clutch unit 7.

[0058] In the embodiment of the present application, a bearing may be provided between the portion of the second section 32 extending into the first section 31 and the first section 31 to form support through the bearing, thereby helping the second section 32 and the first section 31 to rotate relative to each other.

[0059] In some embodiments of the present application, as shown in Figure 5, the second clutch unit 7 includes a clutch inner hub 71, a clutch outer hub 72 and a piston 73. The clutch inner hub 71 is transmission-connected to the first section 31, and the clutch outer hub 72 is transmission-connected to the second speed gear 52 so as to be able to transmission-connect the second speed gear 52 and the first section 31. The piston 73 is transmission-connected to the second section 32 and can transmission-connect the second section 32 and the first section 31.

[0060] It can be understood that the clutch inner hub 71 can cooperate with the clutch outer hub 72 and the piston 73 to connect and disconnect the second clutch unit 7 with the first section 31, which is beneficial for the power system of the present application to select a suitable speed gear to output power to the output mechanism 8 and adapt to its working conditions.

[0061] In some embodiments of the present application, as shown in Figure 4, the output mechanism 8 includes a first output gear 81, a second output gear 82 and a third output gear 83. The first output gear 81 is engaged with the first speed change gear 51, the second output gear 82 is engaged with the second speed change gear 52, and the third output gear 83 is engaged with the third speed change gear 53.

[0062] It can be understood that by providing output gears with a meshing relationship for the first speed gear 51, the second speed gear 52 and the third speed gear 53, the power transmitted by the speed gear set 5 from the engine 1, the first motor 4 and the second motor 6 can be output to the output mechanism 8.

[0063] In some embodiments of the present application, as shown in Figure 4, the output mechanism 8 includes an output shaft 84 and a synchronizer 85, the first output gear 81, the second output gear 82 and the third output gear 83 are arranged at intervals along the axial direction of the output shaft 84, the second output gear 82 is transmission-connected to the output shaft 84, and the synchronizer 85 can connect and disconnect the first output gear 81 and the output shaft 84, and connect and disconnect the third output gear 83 and the output shaft 84.

[0064] It is understandable that the power system can select a suitable output gear through the synchronizer 85 to transmit power from the engine 1, the first motor 4 and the second motor 6, so that the power system has multiple gears.

[0065] In the embodiment of the present application, the power system has multiple working states, including:

[0066] 1. The first clutch unit 2 and the second clutch unit 7 are disconnected, the synchronizer 85 is connected to the third output gear 83, and the first motor 4 drives the first speed change gear 51 to drive the first output gear 81 to rotate.

[0067] 2. The first clutch unit 2 is disconnected, the clutch outer hub 72 and the piston 73 are both drivingly connected to the clutch inner hub 71 , the first motor 4 and the second motor 6 are working, driving the second speed gear 52 to drive the second output gear 82 to rotate.

[0068] 3. The first clutch unit 2 and the second clutch unit 7 are disconnected, the synchronizer 85 is connected to the third output gear 83 , and the first motor 4 drives the third speed change gear 53 to drive the third output gear 83 to rotate.

[0069] 4. The first clutch unit 2 is disconnected, the clutch outer hub 72 is disconnected from the clutch inner hub 71, the piston 73 is connected to the clutch inner hub 71, the synchronizer 85 is connected to the first output gear 81, and the first motor 4 drives the second speed gear 52 to drive the second output gear 82 to rotate.

[0070] 5. The first clutch unit 2 is disconnected, the clutch outer hub 72 is disconnected from the clutch inner hub 71, the piston 73 is connected to the clutch inner hub 71, the synchronizer 85 is connected to the first output gear 81, and the first motor 4 drives the second speed gear 52 to rotate the second output gear 82, and drives the first speed gear 51 to rotate the first output gear 81.

[0071] 6. The first clutch unit 2 is disconnected, the clutch outer hub 72 and the piston 73 are both drivingly connected to the clutch inner hub 71 , and the first motor 4 drives the first speed gear 51 to drive the first output gear 81 to rotate.

[0072] 7. The first clutch unit 2 is disconnected, the piston 73 is disconnected from the clutch inner hub 71, the clutch outer hub 72 is connected to the clutch inner hub 71, the synchronizer 85 is connected to the first output gear 81, and the first motor 4 drives the first speed gear 51 to rotate the first output gear 81, and drives the third speed gear 53 to rotate the third output gear 83.

[0073] 8. First clutch unit 2, the clutch outer hub 72 is disconnected from the clutch inner hub 71, the piston 73 is drivingly connected to the clutch inner hub 71, the synchronizer 85 is connected to the third output gear 83, and the first motor 4 drives the third speed gear 53 to drive the third output gear 83 to rotate.

[0074] 9. The first clutch unit 2 is closed, the second clutch unit 7 is opened, the synchronizer 85 is connected to the first output gear 81, and the first motor 4 and the engine 1 drive the third speed gear 53 to drive the third output gear 83 to rotate.

[0075] 10. The first clutch unit 2 is closed, the piston 73 is drivingly connected to the clutch inner hub 71, the clutch outer hub 72 is disconnected from the clutch inner hub 71, the synchronizer 85 is connected to the first output gear 81, and the engine 1 drives the first speed gear 51 to drive the first output gear 81 to rotate.

[0076] 11. The first clutch unit 2 is closed, the clutch outer hub 72 is connected to the clutch inner hub 71, the piston 73 is disconnected from the clutch inner hub 71, the synchronizer 85 is connected to the first output gear 81, and the engine 1 and the first motor 4 drive the first speed gear 51 to rotate the first output gear 81.

[0077] In some embodiments of the present application, as shown in FIG. 4 , the synchronizer 85 is movable along the axial direction of the output shaft 84 so as to be connected to the first output gear 81 and the third output gear 83 .

[0078] It is understood that the movable synchronizer 85 can be separated from or connected to the first output gear 81 and the third gear when it moves. The synchronizer 85 can transmit power to the gear connected thereto while cutting off power transmission from the separated output gear.

[0079] In some embodiments of the present application, as shown in FIG. 2 , the first motor 4 has an input gear 41 , and the input gear 41 is transmission-connected to the speed-changing gear set 5 .

[0080] In the embodiment of the present application, the first motor 4 drives the speed gear set 5 to rotate through the input gear 41, and can transmit the generated power to the speed gear set 5, which is beneficial for the user to select the appropriate component on the speed gear set 5 to output the power to the output mechanism 8 through the second clutch unit 7.

[0081] In some embodiments of the present application, as shown in FIG2 , the power system further includes an idler gear 9 , and the input gear 41 , the idler gear 9 and the speed change gear set 5 are meshed in sequence along the radial direction of the speed change shaft 3 .

[0082] It is understandable that the first motor 4 is relatively large and interferes with the speed-change shaft 3, making it difficult for it to directly engage with the speed-change gear set 5. The provision of the idler gear 9 can extend the transmission path between the input gear 41 and the speed-change gear set 5, thereby reducing the interference between the first motor 4 and the speed-change shaft 3.

[0083] In some embodiments of the present application, the orthographic projection of the output mechanism 8 on the projection plane at least partially overlaps with the orthographic projection of the first motor 4 on the projection plane.

[0084] It is understood that the length of the power system of the present application in the axial direction of the speed change shaft 3 generally includes the length of the engine 1 in this direction, the length of the first clutch unit 2 in this direction, the length of the first motor 4 in this direction, and the length of the speed change shaft 3 in this direction. Therefore, the orthographic projection of the output mechanism 8 on the projection plane and the orthographic projection of the first motor 4 on the projection plane at least partially overlap, so that the length of the output mechanism 8 in this direction and the length of the first motor 4 in this direction can be overlapped. This overlapping portion can reduce the length occupied by the power system of the present application in this direction, thereby improving the compactness of the power system of the present application and reducing its volume.

[0085] In some embodiments of the present application, as shown in FIG. 2 , the second motor 6 has a stator 61 . The stator 61 is arranged at intervals along the circumference of the first clutch unit 2 . The stator 61 is used to drive the speed change shaft 3 to rotate.

[0086] It can be understood that such a setting is conducive to improving the compactness of the power system of the present application. Specifically, by driving the speed change shaft 3 to rotate through the stator 61, the second motor 6 can omit the rotor. The speed change shaft 3 has the function of a rotor, and it can rotate in the same way as the rotor of the motor, and related structures such as bearings that support the rotation of the rotor can be omitted, thereby reducing the volume of the second motor 6. At the same time, the second motor 6 is arranged on the outside of the first clutch unit 2, which can increase the reuse rate of the components associated with the two, thereby improving the compactness of the power system of the present application.

[0087] A second aspect of the present application provides an automobile, comprising a power system, as shown in Figures 1 and 2 , comprising an engine 1, a first clutch unit 2, a speed-shift shaft 3, a first motor 4, a second motor 6, a speed-shift gear set 5, a second clutch unit 7, and an output mechanism 8. The engine 1 is transmission-connected to one end of the speed-shift shaft 3 via the first clutch unit 2. The first motor 4 and the speed-shift shaft 3 are radially spaced apart from each other, and the first motor 4 is transmission-connected to the speed-shift gear set 5. The second motor 6 is located outside the first clutch unit 2, is connected to the first clutch unit 2, and is transmission-connected to the speed-shift shaft 3. The orthographic projection of the first motor 4 on a projection plane at least partially overlaps with the orthographic projection of the speed-shift shaft 3 on the projection plane, which is a plane perpendicular to the arrangement of the first motor 4 and the speed-shift shaft 3. The second clutch unit 7 connects the speed-shift gear set 5 to the speed-shift shaft 3. The speed-shift gear set 5 is transmission-connected to the output mechanism 8.

[0088] It will be appreciated that the speed-change gear set 5, via the speed-change shaft 3, can adjust the power from the first motor 4, the second motor 6, and the engine 1, and output it to the output mechanism 8. The second motor 6 is located outside the first clutch unit 2 and is connected to the first clutch unit 2, which helps improve the compactness of the power system of the present application and reduce its size. The orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-change shaft 3 on the projection plane, which can improve the compactness of the power system of the present application and enhance the efficiency of vehicle interior space utilization.

[0089] In the embodiment of the present application, the second motor 6 is located outside the first clutch unit 2 and connected to the first clutch unit 2, which helps improve the compactness of the power system of the present application and reduce its volume. Specifically, when the second motor 6 is in the above position, it can use the speed change shaft 3 as its rotor and directly drive the speed change shaft 3. This eliminates the need to arrange a rotor shaft for the second motor 6, thereby improving the compactness of the power system of the present application and reducing its volume.

[0090] In the embodiment of the present application, the orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-shift shaft 3 on the projection plane, which is beneficial to reducing the length of the power system of the present application in the axial direction of the speed-shift shaft 3. Specifically, the length of the power system of the present application in the axial direction of the speed-shift shaft 3 generally includes the length of the engine 1 in this direction, the length of the first clutch unit 2 in this direction, the length of the first motor 4 in this direction, and the length of the speed-shift shaft 3 in this direction. Therefore, the orthographic projection of the first motor 4 on the projection plane at least partially overlaps with the orthographic projection of the speed-shift shaft 3 on the projection plane, which can make the length of the first motor 4 in this direction and the length of the speed-shift shaft 3 in this direction overlap. The overlapping part of the two can reduce the length occupied by the power system of the present application in this direction, so as to improve the compactness of the power system of the present application, thereby reducing its volume.

[0091] In the embodiment of the present application, the second clutch unit 7 connects the speed-changing gear set 5 and the speed-changing shaft 3, and can transmit the power transmitted by the first motor 4, the second motor 6, and the engine 1 to the output mechanism 8. Specifically, the second clutch unit 7 can form a transmission connection between the speed-changing gear and the speed-changing shaft 3, thereby transmitting the power of the above three. It can also form a transmission connection between different components of the speed-changing shaft 3, so that the speed-changing gear set 5 can output power that matches the operating conditions of the output mechanism 8.

[0092] In an embodiment of the present application, the engine 1 is connected to one end of the speed shaft 3 through the first clutch unit 2, so that the engine 1, the second motor 6 and the speed shaft 3 are roughly arranged along the circumference of the speed shaft 3, and the orthographic projection of the first motor 4 on the projection plane is separated from the orthographic projection of the second motor 6 on the projection plane, which can improve the compactness of the power system of the present application. Such an arrangement is conducive to the first motor 4 being close to the speed shaft 3 in the radial direction of the speed shaft 3, thereby reducing the length of the power system of the present application in this direction.

[0093] In an embodiment of the present application, the power system may further include an electric pump and a mechanical pump. The electric pump may be used to drive oil to lubricate multiple components of the power system, and the mechanical pump may be used to drive oil to lubricate multiple components of the power system. The power system's travel speed during lubrication with the electric pump is lower than during lubrication with the mechanical pump.

[0094] In the embodiment of the present application, the power system of the present application integrates the first clutch unit 2 and the second motor 6 to reduce the space occupied by the second motor 6. At the same time, the first motor 4 is arranged close to the speed change shaft 3 in the radial direction of the speed change shaft 3 to reduce the length of the power system in the radial direction of the speed change shaft 3. This can improve the compactness of the power system of the present application and reduce its volume.

[0095] In the embodiment of the present application, when the first motor 4 transmits power to the speed-changing shaft 3 , the second motor 6 can act as a generator to convert kinetic energy into electrical energy.

[0096] In the embodiment of the present application, when the engine 1 transmits power to the speed-changing shaft 3 , the second motor 6 can act as a generator to convert kinetic energy into electrical energy.

[0097] In the embodiment of the present application, the projection plane may be parallel to the plane passing through the axis of the speed-shift shaft 3 .

[0098] In some embodiments of the present application, as shown in Figure 3, the first clutch unit 2 includes an active part 21, a driven part 22 and a coupling part 23. The active part is connected to the engine 1, the driven part 22 is connected to the speed change shaft 3, and the coupling part 23 is used to connect the driven part 22 to the active part 21 in transmission.

[0099] It will be understood that the active portion 21 is connected to the engine 1 and can be driven by the engine 1 and rotate with the engine 1. The driven portion 22 is connected to the speed change shaft 3 and can transmit power from the active portion 21 to the speed change shaft 3. When the engine 1 needs to drive the speed change shaft 3 to rotate, the coupling portion 23 can connect the driven portion 22 with the active portion 21, thereby transmitting the power of the engine 1 to the speed change shaft 3, so that the power of the engine 1 can be adjusted by the speed change gear set 5 and output to the output mechanism 8.

[0100] In the embodiment of the present application, the coupling portion 23 can drive the driven portion 22 to move toward the active portion 21, thereby forming a transmission connection between the driven portion 22 and the active portion 21, or it can drive the active portion 21 to move toward the driven portion 22, thereby forming a transmission connection between the active portion 21 and the driven portion 22.

[0101] In some embodiments of the present application, as shown in Figure 3, the coupling portion 23 includes a filling cavity 2301 and a return spring 231. The filling cavity 2301 is located on the side of the driven portion 22 away from the coupling portion 23 and is capable of expanding to drive the driven portion 22 close to the active portion 21. The return spring 231 is located between the active portion 21 and the driven portion 22 to provide a return force to the driven portion 22 away from the active portion 21.

[0102] It is understood that when the first clutch unit 2 is closed, the filling chamber 2301 can be filled with a liquid such as gas or oil. The filled filling chamber 2301 can expand, generating pressure on the driven portion 22. Under the action of this pressure, the driven portion 22 abuts the active portion 21, enabling power transmission between the two. Simultaneously, the return spring 231 is compressed by this pressure, generating a return force. When the first clutch unit 2 is disengaged, the gas or oil liquid leaves the filling chamber 2301. The return force of the return spring 231 drives the driven portion 22 to separate from the active portion 21, terminating the power transmission between the two.

[0103] In some embodiments of the present application, as shown in Figure 4, the speed gear set 5 includes a first speed gear 51, a second speed gear 52 and a third speed gear 53. The first speed gear 51, the second speed gear 52 and the third speed gear 53 are all sleeved on the speed shaft 3, and the first speed gear 51, the second speed gear 52 and the third speed gear 53 are all connected to the second clutch unit 7 in transmission.

[0104] It is understood that the first speed gear 51, the second speed gear 52, and the third speed gear 53 can be combined with the output mechanism 8 to form different gears and transmit different power. By controlling the operating state of the first clutch unit 2 and the second clutch unit 7, the speed gear set 5 can output power from the engine 1, the first motor 4, and the second motor 6 to the output gears, and match this power to the operating conditions of the power system.

[0105] In the embodiment of the present application, the number of teeth of the first speed gear 51 is smaller than the number of teeth of the second speed gear 52 , and the number of teeth of the second speed gear 52 is smaller than the number of teeth of the third speed gear 53 .

[0106] In the embodiment of the present application, the third speed change gear 53 is transmission-connected to the first motor 4 to transmit power from the first motor 4 .

[0107] In some embodiments of the present application, as shown in Figure 2, the speed change shaft 3 includes a first section 31 and a second section 32, the first section 31 is connected to the first clutch unit 2 and can be driven by the second motor 6, at least a portion of the second section 32 extends into the first section 31 and can rotate relative to the first section 31, the second speed gear 52 is sleeved on the outside of the second section 32 and can rotate relative to the second section 32, the first speed gear 51 and the third speed gear 53 are both sleeved on the outside of the second section 32 and are transmission-connected to the second section 32, and the second clutch unit 7 is used to transmission-connect the second speed gear 52 and the first section 31 and the second section 32 and the first section 31.

[0108] In this embodiment of the present application, the first section 31 can directly transmit power from the second motor 6 or transmit power from the engine 1 via the first clutch unit 2. The power transmitted by the first section 31 can be integrated by the second clutch unit 7 and output to the output mechanism 8. The second section 32 can transmit power generated by the first motor 4 and transmit it to the output mechanism 8 via the second clutch unit 7.

[0109] In the embodiment of the present application, a bearing may be provided between the portion of the second section 32 extending into the first section 31 and the first section 31 to form support through the bearing, thereby helping the second section 32 and the first section 31 to rotate relative to each other.

[0110] In some embodiments of the present application, as shown in Figure 5, the second clutch unit 7 includes a clutch inner hub 71, a clutch outer hub 72 and a piston 73. The clutch inner hub 71 is transmission-connected to the first section 31, and the clutch outer hub 72 is transmission-connected to the second speed gear 52 so as to be able to transmission-connect the second speed gear 52 and the first section 31. The piston 73 is transmission-connected to the second section 32 and can transmission-connect the second section 32 and the first section 31.

[0111] It can be understood that the clutch inner hub 71 can cooperate with the clutch outer hub 72 and the piston 73 to connect and disconnect the second clutch unit 7 with the first section 31, which is beneficial for the power system of the present application to select a suitable speed gear to output power to the output mechanism 8 and adapt to its working conditions.

[0112] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, which may be a read-only memory, a disk, or an optical disk, etc.

[0113] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A power system, characterized in that: The power system comprises an engine (1), a first clutch unit (2), a speed change shaft (3), a first motor (4), a speed change gear set (5), a second motor (6), a second clutch unit (7) and an output mechanism (8), wherein: The engine (1) is transmission-connected to one end of the speed-changing shaft (3) via the first clutch unit (2); The first motor (4) and the speed change shaft (3) are arranged at intervals along the radial direction of the speed change shaft (3), and the first motor (4) is transmission-connected to the speed change gear set (5); The second motor (6) is located outside the first clutch unit (2) and is connected to the first clutch unit (2), and is also transmission-connected to the speed-changing shaft (3); The orthographic projection of the first motor (4) on the projection plane at least partially overlaps with the orthographic projection of the speed change shaft (3) on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first motor (4) and the speed change shaft (3); The second clutch unit (7) connects the speed change gear set (5) and the speed change shaft (3); The speed change gear set (5) is transmission-connected to the output mechanism (8).

2. The power system according to claim 1, characterized in that: The first clutch unit (2) comprises an active part (21), a driven part (22) and a coupling part (23); the active part (21) is connected to the engine (1); the driven part (22) is connected to the speed change shaft (3); and the coupling part (23) is used to connect the driven part (22) to the active part (21) in a transmission manner.

3. The power system according to claim 2, characterized in that: The joint portion (23) includes a filling cavity (2301) and a return spring (231). The filling cavity (2301) is located on a side of the driven portion (22) away from the joint portion (23) and is capable of expanding to drive the driven portion (22) toward the active portion (21). The return spring (231) is located between the active portion (21) and the driven portion (22) to provide a return force to the driven portion (22) away from the active portion (21).

4. The power system according to claim 1, characterized in that: The speed change gear set (5) comprises a first speed change gear (51), a second speed change gear (52) and a third speed change gear (53); the first speed change gear (51), the second speed change gear (52) and the third speed change gear (53) are all sleeved on the speed change shaft (3); the first speed change gear (51), the second speed change gear (52) and the third speed change gear (53) are all transmission-connected to the second clutch unit (7).

5. The power system according to claim 4, characterized in that: The speed change shaft (3) includes a first section (31) and a second section (32), the first section (31) is connected to the first clutch unit (2) and can be driven by the second motor (6), at least a portion of the second section (32) extends into the first section (31) and can rotate relative to the first section (31), the second speed change gear (52) is sleeved on the outside of the second section (32) and can rotate relative to the second section (32), the first speed change gear (51) and the third speed change gear (53) are both sleeved on the outside of the second section (32) and are transmission-connected to the second section (32), and the second clutch unit (7) is used for transmission-connecting the second speed change gear (52) and the first section (31) and the second section (32) and the first section (31).

6. The power system according to claim 5, characterized in that: The second clutch unit (7) comprises a clutch inner hub (71), a clutch outer hub (72) and a piston (73); the clutch inner hub (71) is transmission-connected to the first section (31); the clutch outer hub (72) is transmission-connected to the second speed gear (52) so as to be capable of transmission-connecting the second speed gear (52) and the first section (31); the piston (73) is transmission-connected to the second section (32) and is capable of transmission-connecting the second section (32) and the first section (31).

7. The power system according to claim 4, characterized in that: The output mechanism (8) includes a first output gear (81), a second output gear (82) and a third output gear (83), wherein the first output gear (81) is engaged with the first speed change gear (51), the second output gear (82) is engaged with the second speed change gear (52), and the third output gear (83) is engaged with the third speed change gear (53).

8. The power system according to claim 7, characterized in that: The output mechanism (8) includes an output shaft (84) and a synchronizer (85), wherein the first output gear (81), the second output gear (82) and the third output gear (83) are arranged at intervals along the axial direction of the output shaft (84), the second output gear (82) is transmission-connected to the output shaft (84), and the synchronizer (85) is capable of connecting and disconnecting the first output gear (81) and the output shaft (84), and connecting and disconnecting the third output gear (83) and the output shaft (84).

9. The power system according to claim 8, characterized in that: The synchronizer (85) is movable along the axial direction of the output shaft (84) so ​​as to be connected to the first output gear (81) and the third output gear (83).

10. The power system according to claim 1, characterized in that: The first motor (4) has an input gear (41), and the input gear (41) is transmission-connected to the speed-changing gear set (5).

11. The power system according to claim 10, characterized in that: The power system further comprises an idler wheel (9), and the input gear (41), the idler wheel (9) and the speed change gear set (5) are meshed in sequence along the radial direction of the speed change shaft (3).

12. The power system according to claim 1, characterized in that: The orthographic projection of the output mechanism (8) on the projection plane at least partially overlaps with the orthographic projection of the first motor (4) on the projection plane.

13. The power system according to claim 1, characterized in that: The second motor (6) has a stator (61), and the stator (61) is arranged at intervals along the circumference of the first clutch unit (2). The stator (61) is used to drive the speed change shaft (3) to rotate.

14. An automobile, characterized in that: The automobile comprises a power system, wherein the power system comprises an engine (1), a first clutch unit (2), a speed change shaft (3), a first motor (4), a speed change gear set (5), a second motor (6), a second clutch unit (7) and an output mechanism (8), wherein: The engine (1) is transmission-connected to one end of the speed-changing shaft (3) via the first clutch unit (2); The first motor (4) and the speed change shaft (3) are arranged at intervals along the radial direction of the speed change shaft (3), and the first motor (4) is transmission-connected to the speed change gear set (5); The second motor (6) is located outside the first clutch unit (2) and is connected to the first clutch unit (2), and is also transmission-connected to the speed-changing shaft (3); The orthographic projection of the first motor (4) on the projection plane at least partially overlaps with the orthographic projection of the speed change shaft (3) on the projection plane, and the projection plane is a plane perpendicular to the arrangement direction of the first motor (4) and the speed change shaft (3); The second clutch unit (7) connects the speed change gear set (5) and the speed change shaft (3); The speed change gear set (5) is transmission-connected to the output mechanism (8).

15. The automobile according to claim 14, characterized in that The first clutch unit (2) comprises an active part (21), a driven part (22) and a coupling part (23); the active part (21) is connected to the engine (1); the driven part (22) is connected to the speed change shaft (3); and the coupling part (23) is used to connect the driven part (22) to the active part (21) in a transmission manner.

Images