Driving assembly and vehicle

Abstract

The utility model discloses a driving assembly and a vehicle. The driving assembly comprises a cooling oil way and a driving assembly, the mechanical oil pump is suitable for being in transmission connection with a change gear set of the driving assembly, the mechanical oil pump is communicated with the gear cooling oil way, and the mechanical oil pump is selectively communicated with the stator and rotor cooling oil way; and the electronic oil pump is communicated with the stator and rotor cooling oil way, and the electronic oil pump is selectively opened and closed. Therefore, the mechanical oil pump is selectively communicated with the stator and rotor cooling oil path, the mechanical oil pump is communicated with the gear cooling oil path, the electronic oil pump is communicated with the stator and rotor cooling oil path, and the electronic oil pump is selectively opened and closed. The mechanical oil pump and the electronic oil pump can work cooperatively to cool the stator and / or the rotor of the motor and the speed change gear set of the speed reducer, so that the cooling requirements of a vehicle under different working conditions and different environments can be met, and the energy consumption of a driving assembly can be reduced.

Description

Technical Field

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

[0002] With the development of science and technology and the improvement of users' living standards, vehicles have become an indispensable means of transportation for people. The vehicle is equipped with a cooling system for the drive assembly. The mechanical oil pump and electronic oil pump in the cooling system can not only deliver cooling oil to the parts that need lubrication to reduce friction and wear, but also remove the heat generated by the moving parts through circulating cooling oil to prevent damage to the moving parts due to overheating.

[0003] In the related art, only an electronic oil pump is provided in the cooling system of the drive assembly. As the only power source, the electronic oil pump not only leads to a large flow demand for the electronic oil pump, a high workload, high selection specification requirements, a high operating speed and causes potential NVH risks, but also has the problem of high oil viscosity and difficulty in starting the electronic oil pump in a low temperature environment. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a drive assembly, which has a reliable structure and can not only meet the cooling requirements of vehicles under different working conditions and different environments, but also reduce the energy consumption of the drive assembly.

[0005] The utility model further provides a vehicle.

[0006] According to the drive assembly of the utility model, it includes: the cooling oil circuit includes a stator and rotor cooling oil circuit and a gear cooling oil circuit, the gear cooling oil circuit is suitable for discharging oil to the speed gear set of the drive assembly, and the stator and rotor cooling oil circuit is suitable for discharging oil to the stator and / or rotor of the drive assembly; a mechanical oil pump, the mechanical oil pump is suitable for transmission connection with the speed gear set of the drive assembly, the mechanical oil pump is connected with the gear cooling oil circuit, and the mechanical oil pump is selectively connected with the stator and rotor cooling oil circuit; and an electronic oil pump, the electronic oil pump is connected with the stator and rotor cooling oil circuit, and the electronic oil pump is selectively opened and closed.

[0007] Therefore, by selectively connecting the electric mechanical oil pump with the stator and rotor cooling oil circuit, the mechanical oil pump with the gear cooling oil circuit, the electronic oil pump with the stator and rotor cooling oil circuit, and selectively opening and closing the electronic oil pump, the mechanical oil pump and the electronic oil pump can work together to cool the stator and / or rotor of the motor and the speed gear set of the reducer. This can not only meet the cooling needs of the vehicle under different working conditions and different environments, but also reduce the energy consumption of the drive assembly.

[0008] In some examples of the present utility model, the drive assembly further includes a controller, and the controller is electrically connected to the electric oil pump.

[0009] In some examples of the present utility model, the drive assembly further includes a solenoid valve. The mechanical oil pump is provided with a first stator-rotor cooling oil outlet communicating with the stator-rotor cooling oil circuit. The solenoid valve is disposed at the first stator-rotor cooling oil outlet and is electrically connected to the controller, so as to control the solenoid valve to close the first stator-rotor cooling oil outlet while the controller controls the electric oil pump to be turned on and communicate with the stator-rotor cooling oil circuit.

[0010] In some examples of the present utility model, the mechanical oil pump and the electric oil pump are respectively provided with a first stator-rotor cooling oil outlet and a second stator-rotor cooling oil outlet. The first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet are both communicated with the stator-rotor cooling oil circuit, and a first one-way valve and a second one-way valve are respectively disposed at the first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet.

[0011] In some examples of the present utility model, the drive assembly further includes a temperature sensor. The temperature sensor is adapted to be disposed in the drive assembly, and the temperature sensor is electrically connected to the controller.

[0012] In some examples of the present utility model, the drive assembly further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed on the stator of the drive assembly. The mechanical oil pump is provided with a first stator-rotor cooling oil outlet communicating with the stator-rotor cooling oil circuit. The second temperature sensor is disposed at the first stator-rotor cooling oil outlet. The first temperature sensor and the second temperature sensor are both electrically connected to the controller.

[0013] In some examples of the present utility model, the drive assembly further includes a torque sensor. The torque sensor is adapted to be disposed in the drive assembly, and the torque sensor is electrically connected to the controller.

[0014] In some examples of the present utility model, the drive assembly further includes a stator cooling spray member. The stator-rotor cooling oil circuit is selectively communicated with the stator cooling spray member. The stator cooling spray member is adapted to be disposed outside the stator of the drive assembly. The stator cooling spray member extends in the axial direction of the stator of the drive assembly and is provided with a plurality of spaced stator spray ports.

[0015] In some examples of the present utility model, the drive assembly further includes a gear cooling nozzle member. The gear cooling nozzle member is communicated with the gear cooling oil circuit. The gear cooling nozzle member is adapted to correspond to the meshing portion of the gears of the speed change gear set of the drive assembly.

[0016] In some examples of the utility model, the drive assembly also includes a gear cooling spray component, which is connected to the gear cooling oil circuit, and the gear cooling spray component is suitable for being arranged on the outside of the speed change gear group of the drive assembly, and the gear cooling spray component is provided with a plurality of gear spray ports arranged at intervals.

[0017] In some examples of the present invention, the drive assembly further includes a heat exchanger, one end of the heat exchanger is connected to the electronic oil pump, and the other end of the heat exchanger is connected to the stator and rotor cooling oil circuit.

[0018] In some examples of the present invention, the electronic oil pump and the mechanical oil pump are both disposed in a housing of the drive assembly.

[0019] In some examples of the present invention, the drive assembly includes a reducer, the speed change gear set is disposed inside the housing of the reducer, and the electronic oil pump is disposed inside the housing of the reducer and below the input shaft of the speed change gear set.

[0020] In some examples of the present invention, the electronic oil pump has an electronic oil pump rotor, and the distance between the axis of the electronic oil pump rotor and the inner bottom wall of the reducer housing is set to L1, and L1 satisfies the relationship: 75mm≤L1≤90mm; and / or the distance between the axis of the electronic oil pump rotor and the inner side wall of the reducer housing is set to L2, and L2 satisfies the relationship: 55mm≤L2≤70mm.

[0021] In some examples of the present invention, the housing of the electronic oil pump is a housing made of a lightweight material.

[0022] In some examples of the present invention, the drive assembly includes a reducer and a motor, the reducer and the motor are spaced apart, and the mechanical oil pump is disposed on a box between the reducer and the motor.

[0023] In some examples of the present invention, the mechanical oil pump has a mechanical oil pump rotor, and the distance between the axis of the mechanical oil pump rotor and the axis of the input shaft of the speed gear set is set to L3, and L3 satisfies the relationship: 75mm≤L3≤100mm; and / or the distance between the axis of the mechanical oil pump rotor and the inner top wall of the housing of the drive assembly adjacent to the motor is set to L4, and L4 satisfies the relationship: 65mm≤L4≤75mm.

[0024] In some examples of the present invention, the drive assembly includes a reducer, the speed change gear set is disposed in the reducer, and the secondary shaft of the speed change gear set is drivingly connected to the mechanical oil pump to drive the mechanical oil pump to operate.

[0025] A vehicle according to an embodiment of the present invention includes the drive assembly described above.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic diagram of a drive assembly according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the drive assembly in working mode 1 according to an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the drive assembly in working mode 2 according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the connection position of the mechanical oil pump and the transmission gear set according to an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of the stator cooling spray member according to an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of the gear cooling nozzle member according to an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the inner rotor of the motor according to an embodiment of the present invention;

[0035] Figure 8 is a flowchart of the working mode switching control logic according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] 100, drive assembly;

[0038] 10, mechanical oil pump;

[0039] 20, electronic oil pump;

[0040] 301, transmission gear set; 302, motor; 3021, rotor; 3022, oil slinger hole;

[0041] 401, stator-rotor cooling oil circuit; 402, gear cooling oil circuit;

[0042] 501, stator cooling spray part; 5011, stator spray port; 502, gear cooling nozzle part;

[0043] 60. Solenoid valve; 70. Heat exchanger; 80. Oil pan. DETAILED DESCRIPTION

[0044] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0045] Reference below Figures 1-8 The drive assembly 100 according to the embodiment of the present invention is described. The drive assembly 100 can be applied to a vehicle.

[0046] Combination Figures 1-8 As shown, the drive assembly 100 according to the utility model can mainly include: a cooling oil circuit, a mechanical oil pump 10 and an electronic oil pump 20. A reducer and a motor 302 are arranged in the drive assembly, a speed change gear set 301 is arranged in the reducer, and a stator and a rotor 3021 are arranged in the motor 302. The drive assembly 100 in the utility model is used to provide cooling oil to the drive assembly.

[0047] Wherein, the cooling oil circuit includes a stator-rotor cooling oil circuit 401 and a gear cooling oil circuit 402, wherein the gear cooling oil circuit 402 is suitable for discharging oil to the speed gear set 301 of the drive assembly, and the stator-rotor cooling oil circuit 401 is suitable for discharging oil to the stator and / or rotor of the drive assembly. Specifically, by directing the cooling oil circulating in the stator-rotor cooling oil circuit 401 to the stator and / or rotor of the drive assembly, the heat generated at the stator and / or rotor oil outlet can be taken away to cool the stator and / or rotor oil outlet, thereby preventing the stator and / or rotor oil outlet from being degraded or damaged due to overheating. By directing the cooling oil circulating in the gear cooling oil circuit 402 to the speed gear set 301 of the drive assembly 100, the heat generated at the speed gear set 301 can be taken away to cool the speed gear set 301, thereby preventing the speed gear set 301 from being degraded or damaged due to overheating. In addition, the cooling oil can not only cool but also lubricate, thereby reducing the friction and wear generated at the stator, the rotor and the speed change gear set 301 and extending the service life of the drive assembly 100.

[0048] Furthermore, the mechanical oil pump 10 is suitable for being transmission-connected with the speed gear set 301 of the drive assembly 100, and the mechanical oil pump 10 is connected to the gear cooling oil circuit 402, so that the mechanical oil pump 10 can rotate with the speed gear set 301 to provide circulation power for the cooling oil, so that the cooling oil can circulate in the gear cooling oil circuit 402 connected to the mechanical oil pump 10, thereby spraying oil to the speed gear set 301 of the drive assembly 100 through the gear cooling oil circuit 402 to cool the speed gear set 301.

[0049] Furthermore, the mechanical oil pump 10 is connected to the gear cooling oil circuit 402, and the mechanical oil pump 10 is selectively connected to the stator-rotor cooling oil circuit 401. The electronic oil pump 20 is connected to the stator-rotor cooling oil circuit 401, and the electronic oil pump 20 is selectively opened and closed. Specifically, in some embodiments of the present invention, when the vehicle is in low-load conditions such as light load, uniform speed driving, and low-speed driving, the mechanical oil pump 10 is connected to the stator-rotor cooling oil circuit 401, and the electronic oil pump 20 is closed. Only the mechanical oil pump 10 extracts the cooling oil from the oil sump 80 of the drive assembly 100, and sprays the extracted cooling oil to the stator and / or rotor of the drive assembly 100 through the stator-rotor cooling oil circuit 401 to cool and lubricate the stator and / or rotor of the drive assembly 100;

[0050] When the vehicle is in high-load conditions such as full load, rapid acceleration, continuous climbing, and high-speed driving, the mechanical oil pump 10 is disconnected from the stator-rotor cooling oil circuit 401, the electronic oil pump 20 is turned on and connected to the stator-rotor cooling oil circuit 401. The electronic oil pump 20 extracts the cooling oil from the oil sump 80 of the drive assembly 100, and the extracted cooling oil flows to the stator and / or rotor of the drive assembly 100 through the stator-rotor cooling oil circuit 401 to cool and lubricate the stator and / or rotor of the drive assembly 100.

[0051] In addition, in some other embodiments of the present invention, it is also possible to selectively connect both the electronic oil pump 20 and the mechanical oil pump 10 to the stator-rotor cooling oil circuit 401. The electronic oil pump 20 and the mechanical oil pump 10 simultaneously extract the cooling oil from the oil sump 80 of the drive assembly 100, and spray the extracted cooling oil to the stator and / or rotor of the drive assembly 100 through the stator-rotor cooling oil circuit 401 to cool and lubricate the stator and / or rotor of the drive assembly 100. With such a setting, the cooling effect on the stator and / or rotor of the drive assembly 100 can be further improved. It can not only meet the cooling requirements under different vehicle conditions, but also improve the cooling flexibility of the drive assembly 100, enhance the cooling capacity of the drive assembly 100, and reduce the energy consumption of the drive assembly 100.

[0052] It should be noted that when the temperature of the motor 302 is greater than 80 degrees Celsius and / or the torque requirement of the motor 302 is greater than 200 Nm, it is determined that the vehicle is in a high-load condition. At this time, by turning on the electronic oil pump 20 and connecting it to the stator-rotor cooling oil circuit 401, connecting the mechanical oil pump 10 to the gear cooling oil circuit 402, and making the mechanical oil pump 10 not connected or connected to the stator-rotor cooling oil circuit 401, the mechanical oil pump 10 and the electronic oil pump 20 work together to achieve the cooling of the drive assembly 100.

[0053] When the temperature of the motor 302 is less than or equal to 80 degrees Celsius and / or the torque demand of the motor 302 is less than or equal to 200Nm, the vehicle is determined to be in a low-load condition. At this time, the mechanical oil pump 10 is connected to the stator and rotor cooling oil circuit 401, and the mechanical oil pump 10 is also connected to the gear cooling oil circuit 402. At this time, the electronic oil pump 20 is turned off, and the cooling of the drive assembly 100 by the mechanical oil pump 10 alone can meet the demand. Among them, the determination conditions of the high-load condition of the vehicle can be adjusted or changed according to the specific performance and specific driving environment of the vehicle, and the determination conditions of the vehicle working condition are not limited to the motor temperature and torque demand, and can also be based on the engine speed, vehicle speed, vehicle fuel consumption, etc. as the determination conditions of the vehicle working condition.

[0054] With such an arrangement, the mechanical oil pump 10 and the electronic oil pump 20 work in coordination. When the electronic oil pump 20 fails, the mechanical oil pump 10 can continue to ensure basic lubrication and cooling functions. This has functional redundancy, can improve the reliability and stability of the drive assembly 100, and improve the safety of the vehicle.

[0055] In addition, by adopting a mode in which the mechanical oil pump 10 and the electronic oil pump 20 work in coordination, the vehicle can rely on the mechanical oil pump 10 to work full-time to ensure basic lubrication and cooling in a low-temperature environment, and there is no need to drive the electronic oil pump 20 through a drive component. This not only reduces the energy consumption of the drive assembly 100, but also ensures the normal working performance of the drive assembly 100 in a low-temperature environment, and avoids the problem of high viscosity of the cooling oil and difficulty in starting the electronic oil pump 20. In addition, compared with the working mode in which only the electronic oil pump 20 is used, the mode in which the mechanical oil pump 10 and the electronic oil pump 20 work in coordination can reduce the selection specifications and power requirements of the electronic oil pump 20, and optimize the NVH performance of the drive assembly 100.

[0056] Therefore, by selectively connecting the mechanical oil pump 10 with the stator and rotor cooling oil circuit 401, the mechanical oil pump 10 with the gear cooling oil circuit 402, the electronic oil pump 20 with the stator and rotor cooling oil circuit 401, and selectively opening and closing the electronic oil pump 20, the mechanical oil pump 10 and the electronic oil pump 20 can work together to cool the stator and / or rotor of the motor 302 and the speed change gear set 301 of the reducer, which can not only meet the cooling requirements of the vehicle under different working conditions and different environments, but also reduce the energy consumption of the drive assembly 100.

[0057] In some embodiments of the present invention, the speed change gear set 301 is disposed in the reducer, and the mechanical oil pump 10 is drivingly connected to the secondary shaft of the reducer, and the connection method can be a spline, a connecting sleeve, etc. Among them, the secondary shaft of the reducer can be an intermediate shaft or an output shaft of the reducer.

[0058] In some embodiments of the present utility model, the drive assembly 100 includes an electric control unit, a speed reducer, and a motor 302. The electric control unit is provided with relevant components of electric control. The speed reducer is provided with a speed-changing gear set 301. The motor 302 is provided with a stator and a rotor. The mechanical oil pump 10 and the electronic oil pump 20 are both arranged in the housing of the drive assembly 100, which can make full use of the internal space of the drive assembly 100 and make the structure more compact.

[0059] Furthermore, the electronic oil pump 20 is arranged inside the speed reducer and below the input shaft of the speed-changing gear set 301. In this way, the electronic oil pump 20 can make full use of the available space inside the speed reducer, which can not only further improve the structural compactness of the drive assembly 100 and the vehicle, but also ensure that the electronic oil pump 20 does not interfere with the normal operation of the speed-changing gear set 301.

[0060] In some embodiments of the present utility model, the housing of the electronic oil pump 20 is a lightweight material housing, that is, the housing of the electronic oil pump 20 is made of lightweight materials, which can further improve the lightweight degree of the drive assembly 100 and the vehicle. Among them, the lightweight material can be glass fiber reinforced plastic. In some specific embodiments of the present utility model, the lightweight material can be PPS (polyphenylene sulfide) + 30% GF (glass fiber reinforcement).

[0061] In some embodiments of the present utility model, the electronic oil pump 20 has an electronic oil pump rotor. Let the distance between the axis of the electronic oil pump rotor and the inner bottom wall of the housing of the speed reducer be L1, and L1 satisfies the relationship: 75 mm ≤ L1 ≤ 90 mm; and / or let the distance between the axis of the electronic oil pump rotor and the inner side wall of the housing of the speed reducer be L2, and L2 satisfies the relationship: 55 mm ≤ L2 ≤ 70 mm. By setting the distance between the axis of the electronic oil pump rotor and the inner bottom wall of the housing of the speed reducer within a reasonable range, and setting the distance between the axis of the electronic oil pump rotor and the inner side wall of the housing of the speed reducer within a reasonable range, the arrangement of the electronic oil pump 20 inside the housing of the speed reducer can be made more reasonable, which can further improve the structural compactness and further prevent the electronic oil pump 20 from interfering with the normal operation of the speed-changing gear set 301 in the speed reducer.

[0062] Furthermore, the drive assembly 100 includes a speed reducer and a motor 302. The speed reducer and the motor 302 are arranged at intervals. The mechanical oil pump 10 is arranged on the housing between the speed reducer and the motor 302, which is convenient for the mechanical oil pump 10 to supply oil to the speed-changing gear set 301 of the speed reducer and the stator and / or rotor of the motor 302, and cool the speed-changing gear set 301, the stator and / or rotor, and can improve the cooling efficiency of the mechanical oil pump 10.

[0063] In some embodiments of the present utility model, the mechanical oil pump 10 has a mechanical oil pump rotor. The distance between the axis of the mechanical oil pump rotor and the axis of the input shaft of the speed change gear set 301 is set as L3, and L3 satisfies the relational expression: 75 mm ≤ L3 ≤ 100 mm; and / or the distance between the axis of the mechanical oil pump rotor and the inner top wall of the housing of the drive assembly 100 adjacent to the motor 302 is set as L4, and L4 satisfies the relational expression: 65 mm ≤ L4 ≤ 75 mm. By setting the distance between the axis of the mechanical oil pump rotor and the axis of the input shaft of the speed change gear set 301 within a reasonable range, and setting the distance between the axis of the mechanical oil pump rotor and the inner top wall of the housing of the drive assembly 100 adjacent to the motor 302 within a reasonable range, the arrangement of the electronic oil pump 20 inside the housing of the speed reducer can be made more reasonable, the compactness of the structure can be further improved, and the normal operation of the speed change gear set 301 in the speed reducer can be further prevented from being interfered by the electronic oil pump 20.

[0064] Combined with Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, the drive assembly 100 further includes a controller, and the controller is electrically connected to the electronic oil pump 20. Specifically, the controller is used to monitor the temperature of the motor 302 and the torque demand of the motor 302. By electrically connecting the controller to the electronic oil pump 20, the controller can control the opening and closing and the rotation speed of the electronic oil pump 20 according to parameters such as the temperature and torque of the received motor 302. In this way, the independent control of the electronic oil pump 20 can be realized through the controller, so as to start the electronic oil pump 20 according to the cooling demand of the drive assembly 100, and timely adjust the working mode of the drive assembly 100 according to the specific driving conditions of the vehicle. Thus, not only can the flexibility of the drive assembly 100 be improved, the cooling efficiency and cooling effect of the drive assembly 100 be enhanced, but also the energy consumption of the drive assembly 100 can be reduced.

[0065] In some embodiments of the present utility model, combined with Figure 1 、 Figure 2 and Figure 3As shown, the drive assembly 100 further includes a solenoid valve 60. The mechanical oil pump 10 is provided with a first stator-rotor cooling oil outlet communicating with the stator-rotor cooling oil circuit 401. The solenoid valve 60 is disposed at the first stator-rotor cooling oil outlet and electrically connected to the controller, so as to control the solenoid valve 60 to close the first stator-rotor cooling oil outlet while the controller controls the electric oil pump 20 to be turned on and communicate with the stator-rotor cooling oil circuit 401. Specifically, the solenoid valve 60 can accurately control the opening and closing of the first stator-rotor cooling oil outlet according to the control signal of the controller. The first stator-rotor cooling oil outlet and the electric oil pump 20 are not opened simultaneously. When the electric oil pump 20 is closed, the solenoid valve 60 opens to open the first stator-rotor cooling oil outlet of the mechanical oil pump 10, so that the mechanical oil pump 10 communicates with the stator-rotor cooling oil circuit 401. When the electric oil pump 20 is turned on and communicates with the stator-rotor cooling oil circuit 401, the solenoid valve 60 closes, and the first stator-rotor cooling oil outlet of the mechanical oil pump 10 also closes accordingly. In this way, the solenoid valve 60 can dynamically adjust the on-off of the first stator-rotor cooling oil outlet in the mechanical oil pump 10, and can avoid the problem of pressure conflict caused by the mechanical oil pump 10 and the electric oil pump 20 communicating with the stator-rotor cooling oil circuit 401 simultaneously.

[0066] In some other embodiments of the present invention, in combination with Figure 1 、 Figure 2 and Figure 3 As shown, the mechanical oil pump 10 and the electric oil pump 20 are respectively provided with a first stator-rotor cooling oil outlet and a second stator-rotor cooling oil outlet. The first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet both communicate with the stator-rotor cooling oil circuit 401. A first one-way valve and a second one-way valve are respectively arranged at the first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet. Specifically, by respectively arranging a first one-way valve and a second one-way valve at the first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet, the first one-way valve can ensure that the oil in the mechanical oil pump 10 flows out unidirectionally from the first stator-rotor cooling oil outlet to the stator-rotor cooling oil circuit 401, and the second one-way valve can ensure that the oil in the electric oil pump 20 flows out unidirectionally from the second stator-rotor cooling oil outlet to the stator-rotor cooling oil circuit 401. Due to the arrangement of the first one-way valve and the second one-way valve, on the premise of allowing the mechanical oil pump 10 and the electric oil pump 20 to communicate with the stator-rotor cooling oil circuit 401 simultaneously, the problem of pressure interference caused by the electric oil pump 20 and the mechanical oil pump 10 communicating with the stator-rotor cooling oil circuit 401 simultaneously can be avoided.

[0067] In combination with Figure 1 、 Figure 2 and Figure 3As shown, the drive assembly 100 further includes a temperature sensor. The temperature sensor is adapted to be disposed in the drive assembly 100 and is electrically connected to the controller. Specifically, the temperature sensor is mainly used to detect the temperature of the motor 302 in the drive assembly 100. By electrically connecting the temperature sensor to the controller, the temperature signal of the motor 302 can be transmitted to the controller through the electrical connection line between the temperature sensor and the controller, so that the controller can dynamically adjust the connection condition between the electronic oil pump 20 and the stator-rotor cooling oil circuit 401 according to the temperature of the motor 302.

[0068] Combined with Figure 1 、 Figure 2 and Figure 3 As shown, the drive assembly 100 further includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed on the stator of the drive assembly 100. The mechanical oil pump 10 is provided with a first stator-rotor cooling oil outlet communicating with the stator-rotor cooling oil circuit 401. The second temperature sensor is disposed at the first stator-rotor cooling oil outlet. Both the first temperature sensor and the second temperature sensor are electrically connected to the controller. Specifically, the first temperature sensor is disposed on the stator of the motor 302 of the drive assembly 100 to detect the temperature of the stator of the motor 302 in the drive assembly 100. The second temperature sensor is disposed at the first stator-rotor cooling oil outlet to detect the temperature when the mechanical oil pump 10 discharges oil to the stator-rotor cooling oil circuit 401. Since both the first temperature sensor and the second temperature sensor are electrically connected to the controller, the controller can compare and comprehensively analyze the temperature of the motor 302 detected by the first temperature sensor and the temperature of the mechanical oil pump 10 detected by the second temperature sensor to obtain a final and relatively accurate temperature result, so as to adjust the connection condition between the electronic oil pump 20 and the mechanical oil pump 10 and the stator-rotor cooling oil circuit 401. In this way, the cooling performance of the drive assembly 100 can be further improved, which helps to reduce the energy consumption of the drive assembly 100.

[0069] Combined with Figure 1 、 Figure 2 and Figure 3 As shown, the drive assembly 100 further includes a torque sensor. The torque sensor is adapted to be disposed in the drive assembly 100 and is electrically connected to the controller. Specifically, the torque sensor is mainly used to detect the torque of the motor 302 in the drive assembly 100. By electrically connecting the torque sensor to the controller, the torque signal of the motor 302 can be transmitted to the controller through the electrical connection line between the torque sensor and the controller, so that the controller can dynamically adjust the connection condition between the electronic oil pump 20 and the stator-rotor cooling oil circuit 401 according to the torque of the motor 302.

[0070] Combined with Figure 1 and Figure 5As shown, the drive assembly 100 further includes a stator cooling spray member 501. The stator-rotor cooling oil circuit 401 is selectively connected to the stator cooling spray member 501. The stator cooling spray member 501 is adapted to be disposed outside the stator of the drive assembly 100. The stator cooling spray member 501 extends in the axial direction of the stator of the drive assembly 100 and is provided with a plurality of spaced-apart stator spray openings 5011. Specifically, the stator cooling spray member 501 is assembled and placed above the stator. Cooling oil is conveyed into the stator cooling spray member 501 through the stator-rotor cooling oil circuit 401. The cooling oil flows out of the stator spray openings 5011 of the stator cooling spray member 501 to spray the stator. The cooling oil sprayed onto the stator cools the stator winding through the internal spiral oil passage of the stator housing, thereby effectively controlling the temperature of the motor 302 and ensuring the stable operation of the motor 302.

[0071] Furthermore, the number of stator spray members can be one or more. When there are two or more stator spray members, the multiple stator spray members are arranged at a certain angle above the stator. In this way, the spraying effect of the stator spray members on the stator can be ensured, the cooling effect and cooling uniformity of the cooling oil on the stator can be improved, and the normal working performance of the stator can be guaranteed.

[0072] In some embodiments of the present utility model, in combination with Figure 1 and Figure 6 As shown, the drive assembly 100 further includes a gear cooling nozzle member 502. The gear cooling nozzle member 502 is connected to the gear cooling oil circuit 402. The gear cooling nozzle member 502 is adapted to correspond to the gear meshing portion of the transmission gear set 301 of the drive assembly 100. Specifically, the assembly position of the gear cooling nozzle member 502 is at the gear meshing surface of the transmission gear set 301. Cooling oil can be conveyed into the gear cooling nozzle member 502 through the gear cooling oil circuit 402, and then cooling oil is sprayed onto the transmission gear set 301 through the gear cooling nozzle member 502 to lubricate and cool the tooth surfaces of the transmission gear set 301. In this way, not only can the cooling oil be accurately sprayed onto the gear meshing surface in the transmission gear set 301, reducing the friction and wear between the gears and extending the service life of the transmission gear set 301, but also the heat generated at the transmission gear set 301 can be carried away by the cooling oil sprayed out by the gear cooling nozzle member 502, preventing the transmission gear set 301 from suffering performance degradation or damage due to overheating, helping to keep the transmission gear set 301 operating within a suitable temperature range, and improving the stability and reliability of the drive assembly 100.

[0073] It should be noted that the gear cooling nozzle member 502 can be made of metal material or injection molding material. The specific material of the gear cooling nozzle member 502 can be adjusted or replaced according to the specific composition of the cooling oil and the specific requirements of the vehicle.

[0074] In some other embodiments of the present utility model, in combination with Figure 1 and Figure 7 as shown, the drive assembly 100 further includes a gear cooling spray member. The gear cooling spray member is in communication with the gear cooling oil circuit 402. The gear cooling spray member is adapted to be disposed outside the transmission gear set 301 of the drive assembly 100. The gear cooling spray member extends axially along the stator of the drive assembly 100 and is provided with a plurality of spaced-apart gear spray ports. Specifically, the assembly position of the gear cooling spray member is outside the transmission gear set 301 of the drive assembly 100. Through the gear cooling oil circuit 402, cooling oil can be delivered into the gear cooling spray member, and then through the gear spray ports of the gear cooling spray member, the cooling oil is sprayed onto the transmission gear set 301 to cool and lubricate the transmission gear set 301. Among them, the plurality of spaced-apart spray ports on the gear spray member can ensure the spraying range of the cooling oil in the gear cooling spray member on the transmission gear set 301, and can ensure the cooling effect of the cooling oil in the cooling spray member on the transmission gear set 301. With such a setting, not only can the cooling oil be accurately and effectively sprayed onto the meshing surface of the gears in the transmission gear set 301, reducing the friction and wear between the gears and extending the service life of the transmission gear set 301, but also the heat generated at the transmission gear set 301 can be carried away by the cooling oil sprayed out by the gear cooling spray member, preventing the transmission gear set 301 from suffering performance degradation or damage due to overheating, helping to keep the transmission gear set 301 operating within a suitable temperature range, and improving the stability and reliability of the drive assembly 100.

[0075] In combination with Figure 1 and Figure 7 as shown, a rotor shaft is provided at the rotor 3021 in the motor 302. The stator-rotor cooling oil circuit 401 is selectively in communication with the rotor shaft. The rotor shaft is a hollow shaft, and oil throwing holes 3022 are provided at specific positions on the rotor shaft. Cooling oil can be delivered into the rotor shaft through the stator-rotor cooling oil circuit 401, and then the cooling oil inside the shaft is thrown out through the oil throwing holes 3022 on the rotor shaft, so that the cooling oil can contact components such as the core of the rotor 3021 to lubricate and cool the components such as the core of the rotor 3021. In this way, the internal circulating heat dissipation of the rotor 3021 can be realized through the oil throwing holes 3022 on the rotor shaft, thereby effectively controlling the temperature of the rotor 3021 and ensuring the stable operation of the motor 302.

[0076] Further, the oil slinger holes 3022 on the rotor shaft can be provided at the magnetic isolation plate for cooling the iron core, or can be axially provided outside the magnetic isolation plate to cool the winding ends; the angle between the hole wall direction of the oil slinger holes 3022 and the axial direction can be 90 degrees, 45 degrees, -75 degrees and other angles; the structural type of the oil slinger holes 3022 can be a through hole or a stepped hole; the oil slinger holes 3022 are opened in the circumferential direction at the same axial position of the rotor shaft, and the number of the oil slinger holes 3022 can be two or four. The position, direction, structural type and quantity of the oil slinger holes 3022 on the rotor shaft can be adjusted according to the specific structure of the rotor 3021 and the cooling requirements.

[0077] Combined Figure 1 , Figure 2 and Figure 3 As shown, the drive assembly 100 further includes a heat exchanger 70. One end of the heat exchanger 70 is connected to the electronic oil pump 20, and the other end is connected to the stator-rotor cooling oil circuit 401. Specifically, when the temperature of the motor 302 is higher than 80 degrees Celsius and / or the torque requirement of the motor 302 is higher than 200 Nm, the electronic oil pump 20 is turned on and connected to the stator-rotor cooling oil circuit 401, and the mechanical oil pump 10 is not connected to the stator-rotor cooling oil circuit 401. At this time, the vehicle is in a high-load working condition, and the heat generated inside the motor 302 will increase. The stator-rotor cooling oil circuit 401 transports cooling oil to the stator and / or rotor to cool the stator and / or rotor in the motor 302, taking away part of the heat generated by the stator and / or rotor. Therefore, the temperature of the cooling oil in the stator-rotor cooling oil circuit 401 will also increase as the temperature of the stator and / or rotor in the motor 302 increases. By connecting one end of the heat exchanger 70 to the stator-rotor cooling oil circuit 401 and the other end to the electronic oil pump 20, the cooling oil in the electronic oil pump 20 can flow into the stator-rotor cooling oil circuit 401 after being cooled by the heat exchanger 70. This can reduce the temperature of the cooling oil flowing from the electronic oil pump 20 to the stator and / or rotor of the drive assembly 100, improve the cooling effect of the electronic oil pump 20 on the stator and / or rotor. Further, since the oil flowing out of the stator and / or rotor of the drive assembly 100 and the oil flowing out of the transmission gear set 301 will both flow to the oil pan 80 and mix together, cooling the oil in the stator-rotor cooling oil circuit 401 is also cooling the oil in the gear cooling oil circuit 402, which can improve the cooling efficiency of the drive assembly 100, enhance the stability and reliability of the drive assembly 100, and prevent the stator and / or rotor in the motor 302 and the transmission gear set 301 from being damaged or having their performance degraded due to overheating.

[0078] It should be noted that when the temperature of the motor 302 is lower than 80 degrees Celsius, only the mechanical oil pump 10 works. At this time, since the temperature of the motor 302 is relatively low, the cooling oil does not need to be cooled. Therefore, there is no need to set a heat exchanger 70 between the mechanical oil pump 10 and the stator-rotor cooling oil circuit 401.

[0079] Combined with Figure 1 、 Figure 2 and Figure 3 As shown, the drive assembly 100 is further provided with an oil pan 80. The oil pan 80 is adapted to be arranged at the bottom of the drive assembly 100. The cooling oil on the transmission gear set 301 of the drive assembly 100 and the stator and / or rotor will drip onto the oil pan 80 under the action of gravity. The oil pan 80 collects the cooling oil dripping from the transmission gear set 301 of the drive assembly 100 and the stator and / or rotor. The mechanical oil pump 10 and the electronic oil pump 20 can extract the cooling oil from the oil pan 80, so that the cooling oil in the oil pan 80 flows into the stator-rotor cooling oil circuit 401 and the gear cooling oil circuit 402 under the acceleration of the mechanical oil pump 10 and the electronic oil pump 20, and then flows back to the transmission gear set 301 and the stator-rotor of the drive assembly 100 to provide sufficient cooling oil for the drive assembly 100 and ensure the normal operation of the drive assembly 100.

[0080] Combined with Figure 2 As shown, Working Mode 1 of the drive assembly 100 according to the embodiment of the present invention: The mechanical oil pump is connected to the stator-rotor cooling oil circuit 401.

[0081] Cooling of the transmission gear set 301: The mechanical oil pump 10 extracts the cooling oil from the oil pan 80 and transports the cooling oil to the gear cooling nozzle part 502 or the gear cooling spraying part through the gear cooling oil circuit 402, and sprays the cooling oil to the transmission gear set 301 through the gear cooling nozzle part 502 or the gear cooling spraying part to cool and lubricate the transmission gear set 301.

[0082] Stator-rotor cooling oil circuit 401: The mechanical oil pump 10 is connected to the stator-rotor cooling oil circuit 401. Only the mechanical oil pump 10 extracts the cooling oil from the oil pan 80 and transports the cooling oil to the stator-rotor spraying part through the stator-rotor cooling oil circuit 401, and sprays the cooling oil to the stator-rotor through the stator-rotor spraying part to cool and lubricate the stator and / or rotor.

[0083] When the temperature of the motor is less than or equal to 80 degrees Celsius and / or the torque demand of the motor is less than or equal to 200 Nm, the drive assembly 100 enables operating mode one. In this operating mode, the mechanical oil pump 10 is the sole power source for the drive assembly 100, which is applicable when the vehicle is in a low-load condition. Herein, the controller defaults to starting the mechanical oil pump 10, the solenoid valve 60 in the stator-rotor cooling oil circuit 401 remains open, and the electronic oil pump 20 is in the off state, with the electronic oil pump 20 not communicating with the stator-rotor cooling oil circuit 401.

[0084] Combined Figure 3 As shown, operating mode two of the drive assembly 100 according to an embodiment of the present utility model: The electronic oil pump 20 is connected to the stator-rotor cooling oil circuit 401.

[0085] Cooling of the transmission gear set 301: The mechanical oil pump 10 extracts cooling oil from the oil pan 80 and transports the cooling oil through the gear cooling oil circuit 402 to the gear cooling nozzle member 502 or the gear cooling spray member, and sprays the cooling oil onto the transmission gear set 301 through the gear cooling nozzle member 502 or the gear cooling spray member to cool and lubricate the transmission gear set 301.

[0086] Stator-rotor cooling oil circuit 401: The electronic oil pump 20 is connected to the stator-rotor cooling oil circuit 401. Only the electronic oil pump 20 extracts cooling oil from the oil pan 80 and transports the cooling oil through the stator-rotor cooling oil circuit 401 to the stator-rotor spray member, and sprays the cooling oil onto the stator and / or rotor through the stator-rotor spray member to cool and lubricate the stator and rotor.

[0087] When the temperature of the motor 302 is higher than 80 degrees Celsius and / or the torque demand of the motor 302 is higher than 200 Nm, the drive assembly 100 enables operating mode two. In this operating mode, the mechanical oil pump 10 and the electronic oil pump 20 work together in a dual-pump configuration to jointly provide power for the drive assembly 100, which is applicable when the vehicle is in a high-load condition. Herein, the mechanical oil pump 10 transports cooling oil to the transmission gear set 301 to enhance the tooth surface heat dissipation and anti-wear capabilities of the transmission gear set 301, and the electronic oil pump 20 independently supplies oil to the stator and rotor 3021 of the motor 302 to improve the thermal load capacity of the motor 302.

[0088] In addition, in this operating mode, the solenoid valve 60 switches to the closed mode simultaneously when the electronic oil pump 20 is turned on, to avoid pressure conflicts caused by the mechanical oil pump 10 and the electronic oil pump 20 simultaneously communicating with the stator-rotor cooling oil circuit 401; and the cooling oil in the stator-rotor cooling oil circuit 401 and the electronic oil pump 20 exchanges heat with the medium at a lower temperature in the heat exchanger 70 to improve the cooling efficiency of the drive assembly 100.

[0089] Working mode three of the drive assembly 100 according to the embodiment of the present utility model: The electronic oil pump 20 and the mechanical oil pump 10 are simultaneously connected to the stator-rotor cooling oil circuit 401.

[0090] Cooling of the transmission gear set 301: The mechanical oil pump 10 extracts cooling oil from the oil pan 80 and transports the cooling oil through the gear cooling oil circuit 402 to the gear cooling nozzle member 502 or the gear cooling spraying member, and sprays the cooling oil to the transmission gear set 301 through the gear cooling nozzle member 502 or the gear cooling spraying member to cool and lubricate the transmission gear set 301.

[0091] Stator-rotor cooling oil circuit 401: The electronic oil pump 20 and the mechanical oil pump 10 are simultaneously connected to the stator-rotor cooling oil circuit 401. The electronic oil pump 20 and the mechanical oil pump 10 simultaneously extract cooling oil from the oil pan 80 and transport the cooling oil through the stator-rotor cooling oil circuit 401 to the stator and / or rotor spraying member or nozzle, and spray the cooling oil to the stator and / or rotor through the spraying member or nozzle of the stator and / or rotor to cool and lubricate the stator and / or rotor.

[0092] When the mechanical oil pump 10 and the electronic oil pump 20 are respectively provided with a first stator-rotor cooling oil outlet and a second stator-rotor cooling oil outlet, both the first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet are connected to the stator-rotor cooling oil circuit 401, and the first stator-rotor cooling oil outlet and the second stator-rotor cooling oil outlet are respectively provided with a first one-way valve and a second one-way valve, and when the temperature of the stator and / or rotor in the drive assembly 100 is relatively high, this working mode can be enabled.

[0093] The vehicle according to the present utility model may mainly include: the above-mentioned drive assembly 100. Specifically, since the structure of the drive assembly 100 is more reliable and has good working performance, applying the drive assembly 100 to the vehicle can not only meet the cooling requirements of the vehicle under different working conditions, but also reduce the energy consumption of the drive assembly 100 in the vehicle and improve the stability and safety of the vehicle.

[0094] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0095] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0096] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A drive assembly, characterized in that: include: a cooling oil circuit, the cooling oil circuit comprising a stator-rotor cooling oil circuit (401) and a gear cooling oil circuit (402), the gear cooling oil circuit (402) being suitable for discharging oil to a speed change gear set (301) of the drive assembly (100), and the stator-rotor cooling oil circuit (401) being suitable for discharging oil to a stator and / or a rotor of the drive assembly (100); a mechanical oil pump (10), the mechanical oil pump (10) being adapted to be drivingly connected to the speed change gear set (301) of the drive assembly (100), the mechanical oil pump (10) being connected to the gear cooling oil circuit (402), and the mechanical oil pump (10) being selectively connected to the stator and rotor cooling oil circuit (401); and An electronic oil pump (20), the electronic oil pump (20) being connected to the stator and rotor cooling oil circuit (401), and the electronic oil pump (20) being selectively opened and closed.

2. The drive assembly according to claim 1, characterized in that: It also includes a controller, which is electrically connected to the electronic oil pump (20).

3. The drive assembly according to claim 2, characterized in that: It also includes a solenoid valve (60), the mechanical oil pump (10) is provided with a first stator and rotor cooling oil outlet connected to the stator and rotor cooling oil circuit (401), the solenoid valve (60) is arranged at the first stator and rotor cooling oil outlet and is electrically connected to the controller, so that when the controller controls the electronic oil pump (20) to open and connect to the stator and rotor cooling oil circuit (401), the solenoid valve (60) is controlled to close the first stator and rotor cooling oil outlet.

4. The drive assembly according to claim 2, characterized in that: The mechanical oil pump (10) and the electronic oil pump (20) are respectively provided with a first stator and rotor cooling oil outlet and a second stator and rotor cooling oil outlet, the first stator and rotor cooling oil outlet and the second stator and rotor cooling oil outlet are both connected to the stator and rotor cooling oil circuit (401), and the first stator and rotor cooling oil outlet and the second stator and rotor cooling oil outlet are respectively provided with a first check valve and a second check valve.

5. The drive assembly according to claim 2, characterized in that: A temperature sensor is also included, the temperature sensor is suitable for being arranged in the drive assembly (100), and the temperature sensor is electrically connected to the controller.

6. The drive assembly according to claim 2, characterized in that: It also includes a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged on the stator of the drive assembly (100), the mechanical oil pump (10) is provided with a first stator and rotor cooling oil outlet connected to the stator and rotor cooling oil circuit (401), the second temperature sensor is arranged at the first stator and rotor cooling oil outlet, and the first temperature sensor and the second temperature sensor are both electrically connected to the controller.

7. The drive assembly according to claim 2, characterized in that: A torque sensor is also included, the torque sensor is suitable for being arranged in the drive assembly (100), and the torque sensor is electrically connected to the controller.

8. The drive assembly according to claim 1, characterized in that: The drive assembly (100) further comprises a stator cooling spray component (501), the stator-rotor cooling oil circuit (401) being selectively connected to the stator cooling spray component (501), the stator cooling spray component (501) being suitable for being arranged on the outside of the stator of the drive assembly (100), the stator cooling spray component (501) extending in the axial direction of the stator of the drive assembly (100) and having a plurality of stator spray openings (5011) arranged at intervals.

9. The drive assembly according to claim 1, characterized in that: It also includes a gear cooling nozzle member (502), the gear cooling nozzle member (502) being in communication with the gear cooling oil circuit (402), and the gear cooling nozzle member (502) being adapted to correspond to a gear meshing position of a speed change gear set (301) of the drive assembly (100).

10. The drive assembly according to claim 1, characterized in that: It also includes a gear cooling spray component, the gear cooling spray component is connected to the gear cooling oil circuit (402), the gear cooling spray component is suitable for being arranged on the outside of the speed change gear set (301) of the drive assembly (100), and the gear cooling spray component is provided with a plurality of gear spray ports arranged at intervals.

11. The drive assembly according to claim 1, characterized in that: It also includes a heat exchanger (70), one end of the heat exchanger (70) being connected to the electronic oil pump (20), and the other end of the heat exchanger (70) being connected to the stator and rotor cooling oil circuit (401).

12. The drive assembly according to claim 1, characterized in that: The electronic oil pump (20) and the mechanical oil pump (10) are both arranged in a housing of the drive assembly (100).

13. The drive assembly according to claim 12, characterized in that: The drive assembly (100) comprises a reducer, the speed change gear set (301) is arranged inside the housing of the reducer, and the electronic oil pump (20) is arranged inside the housing of the reducer and is located below the input shaft of the speed change gear set (301).

14. The drive assembly according to claim 13, characterized in that: The electronic oil pump (20) comprises an electronic oil pump rotor, and the distance between the axis of the electronic oil pump rotor and the inner bottom wall of the housing of the reducer is set to L1, and L1 satisfies the relationship: 75 mm ≤ L1 ≤ 90 mm; and / or, The distance between the axis of the electronic oil pump rotor and the inner wall of the housing of the reducer is set to L2, and L2 satisfies the relationship: 55mm≤L2≤70mm.

15. The drive assembly according to claim 13, characterized in that: The housing of the electronic oil pump (20) is a housing made of a lightweight material.

16. The drive assembly according to claim 12, characterized in that: The drive assembly (100) comprises a reducer and a motor (302), the reducer and the motor (302) being arranged at an interval, and the mechanical oil pump being arranged on a box between the reducer and the motor (302).

17. The drive assembly according to claim 16, characterized in that: The mechanical oil pump (10) has a mechanical oil pump rotor, and the distance between the axis of the mechanical oil pump rotor and the axis of the input shaft of the speed change gear set (301) is set to L3, and L3 satisfies the relationship: 75mm≤L3≤100mm; and / or, The distance between the axis of the mechanical oil pump rotor and the inner top wall of the housing of the drive assembly (100) adjacent to the motor (302) is set to L4, and L4 satisfies the relationship: 65mm≤L4≤75mm.

18. The drive assembly according to claim 1, characterized in that: The driving assembly (100) comprises a reducer, in which the speed change gear set (301) is arranged, and the secondary shaft of the speed change gear set (301) is drivingly connected to the mechanical oil pump (10) to drive the mechanical oil pump (10) to operate.

19. A vehicle, characterized in that: include: A drive assembly as claimed in any one of claims 1 to 18.

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