Electric drive assembly, vehicle control method, and vehicle

Abstract

The present invention discloses an electric drive assembly, a vehicle control method and a vehicle. The electric drive assembly includes a generator, a drive motor, a magnetic adjustment component and a first flow path. The drive motor is transmission-connected to the generator. The magnetic adjustment component is used to adjust the magnetic flux of the generator and / or the drive motor. The first flow path is connected to the magnetic adjustment component. The medium amount of the first flow path is adjustable to adjust the position of the magnetic adjustment component. According to the electric drive assembly of the present invention, by adjusting the medium amount of the first flow path, the position of the magnetic adjustment component can be changed to adjust the magnetic flux of the motor, thereby changing the performance parameters of the motor, reducing the energy consumption of the motor, and improving the efficiency and performance of the electric drive assembly.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to an electric drive assembly, a vehicle control method and a vehicle. Background Art

[0002] The electric drive assembly is the power source of the vehicle and is used to drive the vehicle forward. The electric drive assembly usually includes a drive motor and a generator. The drive motor can convert electrical energy into mechanical energy to generate driving force. The generator can convert mechanical energy into electrical energy and charge the vehicle's battery system. In addition, in some vehicles, the generator can also assist the drive motor in providing additional power or convert the kinetic energy of the drive motor into electrical energy and store it in the battery system to achieve energy recovery and improve energy utilization.

[0003] Traditional drive motors, such as electrically excited synchronous motors and permanent magnet synchronous motors, have their own advantages, but also have obvious performance shortcomings. The efficiency problem of electrically excited synchronous motors at low speeds and light loads, and the torque and efficiency limitations of permanent magnet synchronous motors at high speeds have become key factors restricting the performance improvement of electric drive assemblies.

[0004] However, the electric drive assembly in the related art has some shortcomings. Due to the complex and changeable working conditions of the motor, the motor cannot always work in the high-efficiency area, which reduces the efficiency and performance of the electric drive assembly. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an electric drive assembly. According to the electric drive assembly of the present invention, by adjusting the amount of medium in the first flow path, the medium pressure in the first flow path can be changed, thereby changing the position of the magnetic adjustment component to adjust the magnetic flux of the motor, thereby changing the performance parameters of the motor, reducing the energy consumption of the motor, and improving the efficiency and performance of the electric drive assembly.

[0006] The present invention also provides a vehicle having the electric drive assembly.

[0007] The present invention also proposes a control method for a vehicle having the electric drive assembly.

[0008] The invention also proposes a vehicle using the control method.

[0009] The electric drive assembly according to the present invention includes: a generator; a drive motor, which is transmission-connected to the generator; a magnetic flux regulating component, which is used to adjust the magnetic flux of the generator and / or the drive motor; and a first flow path, which is connected to the magnetic flux regulating component, and the amount of medium in the first flow path can be adjusted to adjust the position of the magnetic flux regulating component.

[0010] According to the electric drive assembly of the present invention, the magnetic adjustment component is used to adjust the magnetic flux of the generator and / or the drive motor to optimize the performance of the generator and / or the drive motor. Specifically, at least one of the generator and the drive motor is provided with a magnetic adjustment component. If only the generator is provided with a magnetic adjustment component, the magnetic adjustment component can change the performance parameters of the generator by adjusting the magnetic flux of the generator; if only the drive motor is provided with a magnetic adjustment component, the magnetic adjustment component can change the performance parameters of the generator by adjusting the magnetic flux of the drive motor; if both the generator and the drive motor are provided with magnetic adjustment components, the magnetic adjustment components of the generator and the drive motor will play their respective roles to jointly optimize the performance of the electric drive assembly, improve the efficiency of the motor, and reduce the energy consumption of the motor.

[0011] By setting the first flow path, the medium pressure of the first flow path can act on the magnetic adjustment component, so that the position of the magnetic adjustment component can be adjusted as needed to adjust the magnetic flux of the generator and / or the drive motor. Specifically, when it is necessary to change the magnetic flux of the generator or the drive motor, the medium pressure in the first flow path can be changed by adjusting the medium amount in the first flow path (increasing or decreasing the medium amount). As the medium pressure changes, the magnetic adjustment component loses stability due to the change in force, thereby moving in position.

[0012] According to some embodiments of the present invention, the electric drive assembly further includes a first control valve, which is connected to the first flow path to adjust the amount of medium in the first flow path to adjust the position of the magnetic adjustment component.

[0013] According to some embodiments of the present invention, the electric drive assembly further includes a first cooling flow path, the first cooling flow path is used to cool the generator and the drive motor; and a second flow path, the second flow path is connected to the first cooling flow path.

[0014] According to some embodiments of the present invention, the electric drive assembly further includes a second control valve, wherein the second control valve is connected to the second flow path to adjust the amount of medium in the first cooling flow path.

[0015] According to some embodiments of the present invention, the electric drive assembly further includes a first pump connected to the medium storage tank, and the first pump is connected to the first flow path and the second flow path respectively.

[0016] According to some embodiments of the present invention, the electric drive assembly further includes: a pressure regulating valve connected between the first pump and the first flow path to adjust the medium pressure of the first flow path.

[0017] According to some embodiments of the present invention, the electric drive assembly further includes: a third control valve, wherein the third control valve is connected to the pressure regulating valve to control the outlet pressure of the pressure regulating valve.

[0018] According to some embodiments of the present invention, the first flow path is connected to the second flow path through the pressure regulating valve so that the medium in the first flow path can flow to the second flow path.

[0019] According to some embodiments of the present invention, an outlet of the second control valve is connected to an inlet of the first pump.

[0020] According to some embodiments of the present invention, the electric drive assembly also includes an engine and a coupling mechanism, the engine is connected to the coupling mechanism, the coupling mechanism has a first state and a second state, in the first state the engine is transmission-connected to the axle via the coupling mechanism, in the second state the engine is decoupled from the axle; the engine is provided with a second cooling flow path for cooling the engine, the second flow path is connected to the second cooling flow path.

[0021] According to some embodiments of the present invention, the electric drive assembly includes a second cooling flow path, the second cooling flow path is connected to the coupling mechanism, and the second flow path is connected to the second cooling flow path.

[0022] According to some embodiments of the present invention, the coupling mechanism is selectively connected to the first flow path to switch between the first state and the second state.

[0023] According to some embodiments of the present invention, the electric drive assembly further includes a second pump connected to the medium storage tank, and the second pump is connected to the second flow path.

[0024] According to some embodiments of the present invention, the electric drive assembly is configured to control the second control valve to reduce the amount of medium in the second flow path after the first control valve is opened to adjust the amount of medium in the first flow path.

[0025] According to some embodiments of the present invention, the magnetic adjustment component includes a magnetic adjustment cavity and a magnetic adjustment member, and the magnetic adjustment member is movably disposed in the magnetic adjustment cavity to adjust the magnetic flux of the generator and / or the drive motor.

[0026] According to some embodiments of the present invention, the magnetic adjustment component is movably disposed on the stator and / or rotor of the generator and / or the drive motor.

[0027] According to some embodiments of the present invention, the magnetic tuning component is movably disposed on the stator yoke of the stator of the generator and / or the drive motor, and the amount of medium in the magnetic tuning cavity is adjustable to adjust the magnetic flux passing through the stator teeth of the stator.

[0028] According to some embodiments of the present invention, there are a plurality of magnetic adjustment components, and at least some of the magnetic adjustment components can adjust the magnetic flux passing through the stator teeth when moving.

[0029] According to some embodiments of the present invention, the magnetic tuning cavity is arranged in the rotor of the generator and / or the drive motor, and the amount of medium in the magnetic tuning cavity is adjustable to adjust the relative position of the rotor of the generator and / or the drive motor and the magnetic tuning component.

[0030] According to some embodiments of the present invention, a rotor flow path is provided on a rotor core of the rotor of the generator and / or the drive motor, and the rotor flow path is communicated with the magnetic modulation cavity.

[0031] According to some embodiments of the present invention, a shaft flow path is provided on the shaft of the rotor of the generator and / or the drive motor, and the shaft flow path is connected to the magnetic modulation cavity through the rotor flow path.

[0032] According to some embodiments of the present invention, the rotor of the generator and / or the drive motor further includes a partition flow path arranged in a rotor partition, the rotor partition is arranged on at least one axial side of the rotor of the generator and / or the drive motor, and the partition flow path is connected to the magnetic modulation cavity.

[0033] According to some embodiments of the present invention, a shaft flow path is provided on the shaft of the rotor of the generator and / or the drive motor, and the shaft flow path is connected to the magnetic modulation cavity through the partition flow path.

[0034] According to some embodiments of the present invention, the magnetic adjustment component further includes: a magnetic adjustment spring, wherein the magnetic adjustment spring is connected to the magnetic adjustment component, and the elastic force of the magnetic adjustment spring cooperates with the medium pressure of the magnetic adjustment cavity to adjust the position of the magnetic adjustment component.

[0035] According to some embodiments of the present invention, the magnetic adjustment component further includes: a shell, wherein a housing is provided in the shell, and the magnetic adjustment spring connected to the magnetic adjustment component is provided in the housing.

[0036] According to some embodiments of the present invention, the magnetic tuning cavity is arranged at at least one axial end of the rotor, and the amount of medium in the magnetic tuning cavity is adjustable to adjust the relative position of the rotor of the generator and / or the drive motor and the magnetic tuning component.

[0037] According to some embodiments of the present invention, the magnetic tuning cavity has a first inlet and a second inlet, the magnetic tuning component separates the first inlet and the second inlet, and the medium introduced into the magnetic tuning cavity through the first inlet is suitable for pushing the magnetic tuning component axially close to the rotor, and the medium introduced into the magnetic tuning cavity through the second inlet is suitable for pushing the magnetic tuning component axially away from the rotor.

[0038] According to some embodiments of the present invention, the magnetic adjustment component further includes: an elastic member, wherein the elastic member is connected to the magnetic adjustment member and is used to drive the magnetic adjustment member to move in an axial direction away from the rotor.

[0039] According to some embodiments of the present invention, the magnetic tuning component includes an axial stator, and the amount of medium in the magnetic tuning cavity is adjustable to adjust the relative position of the rotor of the generator and / or the drive motor and the axial stator.

[0040] According to some embodiments of the present invention, the magnetic adjustment component provided on the generator can move along its axial direction and / or the magnetic adjustment component provided on the drive motor can move along its axial direction; and / or the magnetic adjustment component provided on the generator can move along its circumferential direction and / or the magnetic adjustment component provided on the drive motor can move along its circumferential direction; and / or the magnetic adjustment component provided on the generator can move along its radial direction and / or the magnetic adjustment component provided on the drive motor can move along its radial direction.

[0041] A vehicle having at least one electric drive assembly as described above according to the present invention is briefly described below.

[0042] The vehicle according to the present invention includes the electric drive assembly described in any one of the above embodiments. Since the vehicle according to the present invention includes the electric drive assembly described in any one of the above embodiments, the vehicle according to the present invention can adjust the magnetic flux of at least one generator or drive motor, optimize the performance of the electric drive assembly, and improve the overall efficiency and performance of the vehicle.

[0043] According to the vehicle control method of the present invention, the vehicle includes the electric drive assembly described in any one of the above embodiments, the drive motor is provided with the magnetic adjustment component, and the control method includes: collecting the torque and speed values ​​of the drive motor, and determining whether the drive motor needs magnetic adjustment according to the collection results; when the drive motor needs magnetic adjustment, by adjusting the amount of medium in the first flow path, the position of the magnetic adjustment component of the drive motor is changed. The drive motor is provided with a magnetic adjustment component, so that the drive motor can adjust the magnetic flux according to different working conditions and requirements to optimize the performance of the drive motor. The control method is to determine whether magnetic adjustment operation is required according to the operating status of the drive motor, and perform corresponding control when necessary. By collecting the torque and speed values ​​of the drive motor, the working state and performance of the drive motor can be judged. According to the collected torque and speed values, the vehicle system will perform a series of calculations and comparisons based on a preset algorithm or model to determine whether the current working state of the drive motor needs magnetic adjustment. If the vehicle system determines that the drive motor needs magnetic adjustment, it will adjust the amount of medium in the first flow path. The change in the medium pressure of the first flow path will directly affect the pressure on the magnetic adjustment component, thereby changing the position of the magnetic adjustment component. By adjusting the position of the magnetic regulating component, the magnetic flux of the drive motor can be controlled, thereby optimizing the performance of the drive motor, such as improving efficiency, reducing energy consumption or increasing power output.

[0044] According to some embodiments of the present invention, the generator is provided with the magnetic adjustment component, and the vehicle includes a series or parallel operating condition. When the vehicle is in the series or parallel operating condition, the control method further includes: collecting engine torque and speed values, and determining whether the generator needs magnetic adjustment based on the collected results; when the generator needs magnetic adjustment, the position of the magnetic adjustment component of the generator is changed by adjusting the amount of medium in the first flow path.

[0045] According to some embodiments of the present invention, the drive motor is provided with a first cooling flow path, and the control method further comprises: when the position of the magnetic modulation component is adjusted, adjusting the amount of medium in the first cooling flow path of the drive motor.

[0046] According to some embodiments of the present invention, when the position of the magnetic tuning component is adjusted to reduce the magnetic flux of the drive motor, the amount of medium in the first cooling flow path of the drive motor is reduced.

[0047] According to some embodiments of the present invention, the generator is provided with a first cooling flow path, and the control method further comprises: when the position of the magnetic modulation component is adjusted, adjusting the amount of medium in the first cooling flow path of the generator.

[0048] According to some embodiments of the present invention, after adjusting the position of the magnetic tuning component to reduce the magnetic flux of the generator, the amount of medium in the first cooling flow path of the generator is reduced.

[0049] The following briefly describes a vehicle to which the above control method is applied according to the present invention.

[0050] The vehicle according to the present invention includes an execution module for executing the control method described in any one of the above embodiments. Since the vehicle according to the present invention includes an execution module for executing the control method described in any one of the above embodiments, the vehicle according to the present invention can intelligently adjust the magnetic flux of the drive motor according to actual working conditions and requirements, thereby optimizing the performance of the drive motor, so that the vehicle can maintain the best performance state under various working conditions.

[0051] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0053] Figure 1 is a schematic diagram of an electric drive assembly according to some embodiments of the present invention;

[0054] Figure 2 is a schematic diagram of an electric drive assembly according to some other embodiments of the present invention;

[0055] Figure 3 is a flow chart of a method for controlling a driving motor of a vehicle according to an embodiment of the present invention;

[0056] Figure 4 is a flow chart of a method for controlling a generator of a vehicle according to an embodiment of the present invention;

[0057] Figure 5 is a schematic diagram of a control method for a vehicle in a pure electric mode according to an embodiment of the present invention;

[0058] Figure 6 is a schematic diagram of a control method for a vehicle in a hybrid mode according to an embodiment of the present invention;

[0059] Figure 7 is a schematic diagram of a stator core in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0060] Figure 8 is a schematic diagram of the structure of a magnetic adjustment component in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0061] Fig. 9is a schematic structural diagram of the cooperation between a magnetic adjustment member and a magnetic adjustment spring of a magnetic adjustment assembly in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0062] Fig.10 is a magnetic force line diagram when a magnetic adjustment component in a drive motor of an electric drive assembly according to some embodiments of the present invention is directly aligned with a stator tooth portion;

[0063] Fig.11 is a magnetic force line diagram when a magnetic adjustment component and a stator tooth portion are misaligned in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0064] Fig.12 is a schematic diagram of a stator core in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0065] Fig.13 is a schematic structural diagram of a magnetic adjustment component in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0066] Fig.14 is a schematic structural diagram of a stator core in a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0067] Fig.15 is a schematic diagram of the structure of a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0068] Fig.16 is a schematic structural diagram of a stator lamination having a medium flow path disposed in a stator core of a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0069] Fig.17 is a plan view of a stator lamination having a medium flow path disposed in a stator core of a drive motor of an electric drive assembly according to some embodiments of the present invention;

[0070] Fig.18 is a schematic diagram of the cooperation between the stator core and the magnetic assembly of the drive motor of the electric drive assembly according to some embodiments of the present invention;

[0071] Fig.19 is a cross-sectional view of a motor of an electric drive assembly according to some embodiments of the present invention;

[0072] Fig. 20 is a plan view of a rotor core of a rotor of an electric drive assembly according to some embodiments of the present invention;

[0073] Fig.21 is a schematic structural diagram of a rotating shaft of a rotor of an electric drive assembly according to some embodiments of the present invention;

[0074] Fig. 22 is a schematic structural diagram of a rotor diaphragm of a rotor of an electric drive assembly according to some embodiments of the present invention;

[0075] Fig.23 2 is a cross-sectional view of a motor of an electric drive assembly according to some other embodiments of the present invention.

[0076] Reference numerals:

[0077] Electric drive assembly 1;

[0078] Generator 11;

[0079] A driving motor 12;

[0080] A magnetic adjustment component 13, a magnetic adjustment cavity 131, a first inlet 131a, a second inlet 131b, a magnetic adjustment member 132, a magnetic adjustment spring 133, and an axial stator 134;

[0081] stator core 14, stator yoke 141, stator teeth 142, medium flow path 143;

[0082] A first flow path 151, a second flow path 152, a medium cooler 1521, a first cooling flow path 153, and a second cooling flow path 154;

[0083] A first control valve 161, a second control valve 162, a pressure regulating valve 163, and a third control valve 164;

[0084] A first pump 171, a second pump 172;

[0085] Engine 18, coupling mechanism 19;

[0086] Rotor core 201 , rotor flow path 2011 , shaft 202 , shaft flow path 2021 , rotor diaphragm 203 , diaphragm flow path 2031 . DETAILED DESCRIPTION

[0087] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0088] There are some deficiencies in the electric drive assembly in the related technology. How to accurately and efficiently achieve magnetic flux regulation to ensure the maximum performance of the motor under different working conditions is still a difficult problem that needs to be solved.

[0089] Reference below Figure 1-Figure 23 An electric drive assembly according to an embodiment of the present invention is described.

[0090] like Figure 1-Figure 2As shown, the electric drive assembly 1 according to the present invention includes a generator 11, a drive motor 12, a magnetic adjustment component 13 and a first flow path 151, the drive motor 12 is transmission-connected to the generator 11; the magnetic adjustment component 13 is used to adjust the magnetic flux of the generator 11 and / or the drive motor 12; the first flow path 151 is connected to the magnetic adjustment component 13, and the medium amount of the first flow path 151 is adjustable to adjust the position of the magnetic adjustment component 13.

[0091] According to the electric drive assembly 1 of the present invention, the magnetic adjustment component 13 is used to adjust the magnetic flux of the generator 11 and / or the drive motor 12 to optimize the performance of the generator 11 and / or the drive motor 12. Specifically, at least one of the generator 11 and the drive motor 12 is provided with a magnetic adjustment component 13. If only the generator 11 is provided with a magnetic adjustment component 13, the magnetic adjustment component 13 can change the performance parameters of the generator 11 by adjusting the magnetic flux of the generator 11; if only the drive motor 12 is provided with a magnetic adjustment component 13, the magnetic adjustment component 13 can change the performance parameters of the generator 11 by adjusting the magnetic flux of the drive motor 12; if both the generator 11 and the drive motor 12 are provided with a magnetic adjustment component 13, the magnetic adjustment components 13 of the generator 11 and the drive motor 12 will play their respective roles to jointly optimize the performance of the electric drive assembly 1, improve the motor efficiency, and reduce the motor energy consumption.

[0092] By setting the first flow path 151, the medium pressure of the first flow path 151 can act on the magnetic adjustment component 13, so that the position of the magnetic adjustment component 13 can be adjusted as needed to adjust the magnetic flux of the generator 11 and / or the drive motor 12. Specifically, when it is necessary to change the magnetic flux of the generator 11 or the drive motor 12, the medium pressure in the first flow path 151 can be changed by adjusting the medium amount of the first flow path 151 (increasing or decreasing the medium amount). As the medium pressure changes, the magnetic adjustment component 13 loses stability due to the change in force, thereby moving in position.

[0093] Therefore, according to the electric drive assembly 1 of the present invention, by adjusting the amount of medium in the first flow path 151, the medium pressure in the first flow path 151 can be changed, thereby changing the position of the magnetic adjustment component 13 to adjust the magnetic flux of the motor, and then changing the performance parameters of the motor, reducing the energy consumption of the motor, and improving the efficiency and performance of the electric drive assembly 1.

[0094] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the generator 11 and the drive motor 12 are both provided with a magnetic adjustment component 13. In the electric drive assembly 1, the generator 11 is provided with a magnetic adjustment component 13, and the drive motor 12 is also provided with a magnetic adjustment component 13, so that the generator 11 and the drive motor 12 can independently adjust the magnetic flux, thereby achieving the adjustment of their respective performance parameters. Specifically, the magnetic adjustment component 13 on the generator 11 can flexibly adjust the magnetic flux of the generator 11 according to the power generation demand and the charging state of the battery system, optimize the power generation efficiency, and achieve efficient energy recovery; the magnetic adjustment component 13 on the drive motor 12 can adjust the magnetic flux of the drive motor 12 in real time according to factors such as the driving state of the vehicle to provide the best power output. By providing the magnetic adjustment component 13 on both the generator 11 and the drive motor 12, the independent optimization of the performance of the generator 11 and the drive motor 12 is achieved, providing the driver with a more comfortable and efficient driving experience.

[0095] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 further includes a first control valve 161, which is connected to the first flow path 151 to adjust the amount of medium in the first flow path 151 to adjust the position of the magnetic adjustment component 13. By setting the first control valve 161, the first control valve 161 adjusts the amount of medium in the first flow path 151, thereby controlling the pressure on the magnetic adjustment component 13, thereby achieving precise control of the position of the magnetic adjustment component 13.

[0096] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 also includes a first cooling flow path 153 and a second flow path 152. The first cooling flow path 153 is used to cool the generator 11 and the drive motor 12; the second flow path 152 is connected to the first cooling flow path 153. When the generator 11 and the drive motor 12 are working, the heat generated by the heating elements can be effectively absorbed and taken away by the medium of the first cooling flow path 153, so that the generator 11 and the drive motor 12 are kept at a suitable temperature and run stably. By setting the second flow path 152, the second flow path 152 can transport the medium to the first cooling flow path 153 to meet the cooling requirements of the first cooling flow path 153 for the heating elements.

[0097] In some specific embodiments, the medium can be a medium pressure capable of lubrication and heat exchange, which not only has excellent thermal conductivity and can effectively absorb and take away the heat generated by the heating components of the generator 11 and the drive motor 12, but also its lubricating properties can reduce the wear of internal parts of the generator 11 and the drive motor 12, thereby extending the service life of the generator 11 and the drive motor 12.

[0098] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the electric drive assembly 1 also includes a second control valve 162, which is connected to the second flow path 152 to adjust the amount of medium in the first cooling flow path 153. By setting the second control valve 162, the second control valve 162 is used to adjust the amount of medium in the second flow path 152, and the amount of medium transported from the second flow path 152 to the first cooling flow path 153 can be increased or reduced to achieve the cooling effect. Specifically, when the workload of the generator 11 and the drive motor 12 increases and the heat generated increases, the second control valve 162 will allow more medium to flow to the first cooling flow path 153 through the second flow path 152, thereby enhancing the cooling effect. On the contrary, when the workload of the generator 11 and the drive motor 12 decreases and the heat generated is less, the second control valve 162 will reduce the flow of medium flowing from the second flow path 152 to the first cooling flow path 153, thereby achieving energy saving effect.

[0099] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 further includes a medium cooler 1521, which is connected to the second flow path 152 to cool the medium in the second flow path 152. Through the cooling effect of the medium cooler 1521, the temperature of the medium in the second flow path 152 can be effectively reduced, so that the medium in the first cooling flow path 153 is kept at a low temperature, thereby achieving effective control of the temperature of the generator 11 and the drive motor 12.

[0100] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the electric drive assembly 1 also includes a first pump 171 connected to the medium storage pool, and the first pump 171 is connected to the first flow path 151 and the second flow path 152 respectively. By setting the first pump 171, the first pump 171 can provide power for the flow path system so that the medium flows in the flow path system. The medium storage pool is used to store the medium, and the first pump 171 can extract the medium from the medium storage pool by connecting to the medium storage pool. The first pump 171 is connected to the first flow path 151 and the second flow path 152 respectively, so that the first pump 171 can drive the medium to flow in the first flow path 151 and the second flow path 152. Driven by the first pump 171, the medium can flow into the first flow path 151 to change the position of the magnetic adjustment component 13 and realize the adjustment of the magnetic flux of the generator 11 and the drive motor 12; the medium can also flow into the first cooling flow path 153 to exchange heat with the heating element to reduce the temperature. The heating element includes but is not limited to the generator 11 and the drive motor 12, so that the generator 11 and the drive motor 12 maintain normal operation. Therefore, the first pump 171 extracts the medium from the medium storage pool and delivers it to the first flow path 151 and the first cooling flow path 153 through the first flow path 151 and the second flow path 152, respectively, to complete the functions of magnetic flux adjustment and cooling. More specifically, the first pump 171 is mainly used to deliver the medium to the first flow path 151 to achieve the adjustment of the magnetic flux of the generator 11 and the drive motor 12, and the excess medium in the first pump 171 is delivered to the second flow path 152 to provide the required medium for the first cooling flow path 153 to achieve the cooling of the heating element.

[0101] It should be noted that the first pump 171 can be either an electronic pump or a mechanical pump.

[0102] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 further includes a pressure regulating valve 163, which is connected in series between the first pump 171 and the first flow path 151 to adjust the medium pressure of the first flow path 151. By setting the pressure regulating valve 163, the pressure regulating valve 163 adjusts the medium pressure of the first flow path 151 to meet the medium pressure requirement of the first flow path 151 of the magnetic adjustment component 13 during normal operation.

[0103] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the electric drive assembly 1 has a third control valve 164, and the third control valve 164 is connected to the pressure regulating valve 163 to control the outlet pressure of the pressure regulating valve 163. By setting the third control valve 164, the third control valve 164 is used to control the outlet pressure of the pressure regulating valve 163, so that the pressure regulating valve 163 keeps the medium pressure of the first flow path 151 within a range that meets the requirements, thereby achieving the normal operation of the magnetic adjustment component 13. Specifically, assuming that the minimum pressure required by the magnetic adjustment component 13 for the medium pressure of the first flow path 151 is a set pressure threshold, the third control valve 164 will control the outlet pressure of the pressure regulating valve 163 not to be lower than the set pressure threshold. When the medium pressure of the first flow path 151 is about to be lower than the set pressure threshold, the third control valve 164 will trigger the corresponding adjustment mechanism to increase the medium pressure of the first flow path 151 until the pressure reaches or exceeds the set pressure threshold.

[0104] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first flow path 151 is connected to the second flow path 152 through the pressure regulating valve 163 so that the medium in the first flow path 151 can flow to the second flow path 152. Since the demand for the medium of the magnetic adjustment component 13 during operation varies according to different working conditions, when the medium in the first flow path 151 exceeds the amount of medium currently required by the magnetic adjustment component 13, there may be surplus medium in the first flow path 151. At this time, the medium in the first flow path 151 can flow to the second flow path 152 through the pressure regulating valve 163, thereby improving the energy efficiency of the electric drive assembly 1.

[0105] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the outlet of the second control valve 162 is connected to the inlet of the first pump 171. The inlet of the first pump 171 is the inlet for the first pump 171 to draw medium from the medium storage tank. The medium output by the first pump 171 will flow to the second flow path 152 through the second control valve 162, thereby realizing the control of the medium amount in the second flow path 152. By connecting the outlet of the second control valve 162 to the inlet of the first pump 171, when the medium amount required by the first cooling flow path 153 is less than the medium amount flowing into the second control valve 162, part of the medium in the second control valve 162 will flow to the second flow path 152, and the excess medium will flow back to the inlet of the first pump 171 through the outlet of the second control valve 162, which can effectively balance the medium flow in the flow path system, realize the recycling of the medium, reduce power consumption, and improve the medium utilization efficiency.

[0106] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the electric drive assembly 1 also includes an engine 18 and a coupling mechanism 19. The engine 18 is connected to the coupling mechanism 19. The coupling mechanism 19 has a first state and a second state. In the first state, the engine 18 is connected to the axle through the coupling mechanism 19, and in the second state, the engine 18 is decoupled from the axle. The engine 18 can convert other forms of energy into mechanical energy. By setting the engine 18, the power output of the engine 18 can be controlled by the coupling mechanism 19 to achieve connection or disconnection with the axle, so that the electric drive assembly 1 can flexibly adjust the power output mode according to driving conditions and needs, thereby optimizing energy utilization and driving experience. The coupling mechanism 19 is used to achieve the transmission connection between the engine 18 and the axle and has two working modes, the first state and the second state.

[0107] In the first state, the engine 18 is connected to the axle through the coupling mechanism 19, and the power of the engine 18 can be directly transmitted to the axle to drive the vehicle. In the second state, the engine 18 is decoupled from the axle, the power transmission between the engine 18 and the axle is disconnected, and the engine 18 no longer directly drives the vehicle, which can save fuel and reduce emissions.

[0108] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 includes a second cooling flow path 154, the second cooling flow path 154 is connected to the coupling mechanism 19, and the second flow path 152 is connected to the second cooling flow path 154. By setting the second cooling flow path 154 for cooling the engine 18, the medium of the second cooling flow path 154 can effectively absorb and dissipate the heat generated by the engine 18 during operation, so that the engine 18 is kept within a suitable operating temperature range. By connecting the second flow path 152 to the second cooling flow path 154, the cooling effect of the engine 18 can be controlled. The second flow path 152 allows the flow rate and pressure of the medium in the second cooling flow path 154 to be adjusted according to the real-time working state and temperature requirements of the engine 18, so that the engine 18 can be properly cooled under various working conditions.

[0109] Specifically, when the engine 18 is under high load or high temperature, the second flow path 152 can increase the flow rate and pressure of the medium in the second cooling flow path 154 to enhance the cooling effect. When the engine 18 is under low load or at a moderate temperature, the second flow path 152 can reduce the flow rate and pressure of the medium in the second cooling flow path 154 to save energy and keep the engine 18 within the optimal operating temperature range.

[0110] According to some embodiments of the present invention, the coupling mechanism 19 is selectively connected to the first flow path 151 to switch between the first state and the second state. When the coupling mechanism 19 needs to be connected to the engine 18, that is, enter the first state, the coupling mechanism 19 is connected to the first flow path 151, and the first flow path 151 provides the necessary pressure to the coupling mechanism 19, so that the coupling mechanism 19 can achieve the transmission connection with the engine 18, and the power of the engine 18 can be transmitted to the axle, thereby driving the vehicle to travel.

[0111] When the transmission connection between the engine 18 and the axle needs to be disconnected, that is, when entering the second state, the coupling mechanism 19 is disconnected from the first flow path 151, and the first flow path 151 stops providing pressure to the coupling mechanism 19, so that the transmission mechanism in the coupling mechanism 19 can be smoothly decoupled, thereby disconnecting the power transmission between the engine 18 and the axle. By selectively connecting the coupling mechanism 19 with the first flow path 151, the vehicle is allowed to flexibly adjust the power output mode under different driving conditions and requirements to achieve optimal driving performance and fuel economy. For example, when high power output is required, the engine 18 can be connected to the axle, and the engine 18 and the drive motor 12 can jointly drive the vehicle to obtain greater driving force; when high power output is not required or in order to save fuel and reduce emissions, the connection between the engine 18 and the axle can be disconnected, and the vehicle is driven by the drive motor 12. At this time, the engine 18 can cooperate with the generator 11 to power the drive motor 12.

[0112] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric drive assembly 1 also includes a second pump 172 connected to the medium storage tank, and the second pump 172 is connected to the second flow path 152. By setting the second pump 172, the second pump 172 can extract the medium from the medium storage tank and provide the medium to the second flow path 152. When the engine 18 is working, the second pump 172 can independently extract the medium from the medium storage tank and cool and lubricate the engine 18 through the second flow path 152, so as to achieve normal operation and efficient cooling of the engine 18. In addition, the working state of the second pump 172 can be adjusted in real time according to the operating status of the engine 18. By controlling the second pump 172, the supply amount and supply pressure of the medium can be accurately adjusted to meet the cooling and lubrication requirements of the engine 18 under different working conditions. In addition, since the medium demand of the first cooling flow path 153 changes with the working state of the electric drive assembly 1, when the amount of medium delivered by the first pump 171 to the second flow path 152 is insufficient to meet the cooling demand, the medium in the medium storage pool can be drawn and delivered to the second flow path 152 through the drive of the second pump 172 to supplement the medium required by the first cooling flow path 153, so that the heating element can be adequately cooled to maintain the normal operation of the electric drive assembly 1.

[0113] According to some embodiments of the present invention, the electric drive assembly 1 is configured to control the second control valve 162 to reduce the amount of medium in the second flow path 152 after the first control valve 161 is opened to control the amount of medium in the first flow path 151. The amount of medium in the first flow path 151 can be controlled by opening the first control valve 161, thereby controlling the position of the magnetic adjustment component 13. The position of the magnetic adjustment component 13 has an important influence on the magnetic field distribution and overall performance of the motor. Therefore, by controlling the position of the magnetic adjustment component 13, the performance of the motor can be optimized and the efficiency can be improved. The efficiency of the motor is improved, so the heat generation is reduced accordingly. By controlling the second control valve 162 to reduce the amount of medium in the second flow path 152, the amount of medium transported by the second flow path 152 to the first cooling flow path 153 can be reduced, and the motor can be fully cooled while reducing energy consumption.

[0114] According to some embodiments of the present invention, Figure 7 and Figure 8 As shown, the magnetic adjustment component 13 includes a magnetic adjustment cavity 131 and a magnetic adjustment member 132. The magnetic adjustment member 132 is movably disposed in the magnetic adjustment cavity 131 to adjust the magnetic flux of the generator 11 and / or the drive motor 12. By changing the position of the magnetic adjustment member 132, the magnetic flux of the generator 11 or the drive motor 12 can be adjusted accordingly, thereby changing the performance parameters of the generator 11 or the drive motor 12, and improving the efficiency and performance of the electric drive assembly 1. The first flow path 151 is connected to the magnetic adjustment cavity 131 and generates medium pressure by conveying medium into the magnetic adjustment cavity 131, thereby driving the magnetic adjustment member 132 to move.

[0115] According to some embodiments of the present invention, the magnetic adjustment component 132 is movably disposed on the stator and / or rotor of the generator 11 and / or the drive motor 12. The magnetic adjustment component 132 can be disposed on the stator or on the rotor. When the magnetic adjustment component 132 is disposed on the stator, the position of the magnetic adjustment component 132 relative to the stator can be changed by controlling the movement of the magnetic adjustment component 132, thereby changing the magnetic field distribution and achieving the regulation of the magnetic flux. On the other hand, when the magnetic adjustment component 132 is disposed on the rotor, the position of the magnetic adjustment component 132 relative to the rotor can be changed by adjusting the position of the magnetic adjustment component 132, thereby adjusting the magnetic flux.

[0116] According to some embodiments of the present invention, the magnetic adjustment member 132 is movably disposed on the stator yoke 141 of the stator of the generator 11 and / or the drive motor 12, and the amount of medium in the magnetic adjustment cavity 131 is adjustable to adjust the magnetic flux passing through the stator teeth 142 of the stator. When current passes through the stator winding, a magnetic field is generated around the stator teeth 142. When the magnetic adjustment member 132 can move on the stator yoke 141, the magnetic flux passing through the stator teeth 142 can be directly adjusted. By moving the magnetic adjustment member 132, as the radial facing area between the magnetic adjustment member 132 and the stator teeth 142 changes, continuous or segmented adjustment of the magnetic flux can be achieved, which can increase the range of magnetic adjustment and improve the accuracy of magnetic adjustment. Specifically, when the facing area between the magnetic adjustment component 132 and the stator tooth portion 142 increases, the magnetic flux path becomes wider, the magnetic resistance decreases accordingly, and the magnetic flux increases; conversely, when the facing area between the magnetic adjustment component 132 and the stator tooth portion 142 decreases, the magnetic flux path becomes narrower, the magnetic resistance increases accordingly, and the magnetic flux decreases.

[0117] According to some embodiments of the present invention, there are multiple magnetic adjustment members 132, and at least some of the magnetic adjustment members 132 can adjust the magnetic flux passing through the stator teeth 142 when they move. The magnetic adjustment members 132 can adjust their positions as a whole at the same time, and then adjust the magnetic flux passing through multiple stator teeth 142 at the same time to achieve uniform magnetic field regulation. Some of the magnetic adjustment members 132 can also adjust their positions independently, allowing local adjustment of the magnetic flux passing through a specific stator tooth 142.

[0118] According to some embodiments of the present invention, the magnetic adjustment cavity 131 is disposed in the rotor of the generator 11 and / or the drive motor 12, and the amount of medium in the magnetic adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or the drive motor 12 and the magnetic adjustment member 132. By disposing the magnetic adjustment cavity 131 in the rotor, the magnetic adjustment cavity 131 provides a space for accommodating and moving the magnetic adjustment member 132, which can reduce the space occupied. By adjusting the amount of medium in the magnetic adjustment cavity 131, the medium pressure in the magnetic adjustment cavity 131 can be changed, so that the magnetic adjustment member 132 moves, thereby changing the relative position of the magnetic adjustment member 132 and the rotor, and realizing the adjustment of the magnetic flux.

[0119] According to some embodiments of the present invention, Fig.19 and Fig. 20 As shown, a rotor core 201 of the rotor of the generator 11 and / or the drive motor 12 is provided with a rotor flow path 2011, and the rotor flow path 2011 is connected to the magnetic adjustment cavity 131. The medium outside the rotor can be transported to the rotor through the rotor flow path 2011. For example, after the rotor flow path 2011 receives the medium transported from the first flow path 151, the medium will further enter the magnetic adjustment cavity 131, thereby changing the medium pressure in the magnetic adjustment cavity 131, and adjusting the position of the magnetic adjustment member 132.

[0120] According to some embodiments of the present invention, Figure 19-21 As shown, a shaft flow path 2021 is provided on the shaft 202 of the rotor of the generator 11 and / or the drive motor 12, and the shaft flow path 2021 is connected to the magnetic adjustment cavity 131 through the rotor flow path 2011. By providing the shaft flow path 2021, a delivery path for delivering the medium to the rotor flow path 2011 is increased. After the medium enters the shaft flow path 2021, it further enters the magnetic adjustment cavity 131 through the rotor flow path 2011 to adjust the position of the magnetic adjustment member 132.

[0121] According to some embodiments of the present invention, Fig. 22 As shown, the rotor of the generator 11 and / or the drive motor 12 also includes a baffle flow path 2031 disposed in the rotor baffle 203, and the baffle flow path 2031 is connected to the magnetic adjustment cavity 131. The medium in the baffle flow path 2031 can enter the magnetic adjustment cavity 131, thereby changing the medium pressure in the magnetic adjustment cavity 131 to adjust the position of the magnetic adjustment member 132. The rotor baffle 203 is used to limit the axial displacement of the rotor and to balance the weight in the dynamic balancing experiment of the rotor. The rotor baffle 203 has a magnetic isolation effect, which can reduce the magnetic field leakage of the rotor and can also help reduce eddy current losses. The rotor baffle 203 is disposed on at least one side of the axial direction of the rotor of the generator 11 and / or the drive motor 12 to limit the rotor axially, so that the connection between the baffle flow path 2031 and the magnetic adjustment flow path is not easy to leak.

[0122] According to some embodiments of the present invention, Figure 19-22 As shown, a shaft flow path 2021 is provided on the rotating shaft 202 of the rotor of the generator 11 and / or the drive motor 12, and the shaft flow path 2021 is connected to the magnetic adjustment cavity 131 through the partition flow path 2031. By providing the shaft flow path 2021, a delivery path for delivering the medium to the rotor flow path 2011 is increased. After the medium enters the shaft flow path 2021, it further enters the magnetic adjustment cavity 131 through the partition flow path 2031 to adjust the position of the magnetic adjustment member 132.

[0123] According to some embodiments of the present invention, Fig. 9 and Fig.10As shown, the magnetic adjustment component 13 also includes a magnetic adjustment spring 133, which is connected to the magnetic adjustment member 132. The elastic force of the magnetic adjustment spring 133 and the medium pressure of the magnetic adjustment cavity 131 cooperate to adjust the position of the magnetic adjustment member 132. By setting the magnetic adjustment spring 133, the magnetic adjustment spring 133 is connected to the magnetic adjustment member 132 to apply an elastic force to the magnetic adjustment member 132, thereby enhancing the ability to adjust the position of the magnetic adjustment member 132. Specifically, the elastic force of the magnetic adjustment spring 133 will interact with the medium pressure of the magnetic adjustment cavity 131; the position of the magnetic adjustment member 132 is not only affected by the elastic force of the magnetic adjustment spring 133, but also by the change of the medium pressure in the magnetic adjustment cavity 131, so that the position adjustment of the magnetic adjustment member 132 is more flexible and accurate. For example, assuming that the medium pressure in the magnetic tuning chamber 131 is zero, the magnetic tuning component 132 is in the initial position; when the medium pressure increases, the medium pressure will overcome part of the elastic force of the magnetic tuning spring 133, pushing the magnetic tuning component 132 toward the elastic component; conversely, when the medium pressure decreases, the elastic force of the magnetic tuning spring 133 pushes the magnetic tuning component 132 toward the initial position; when the medium pressure decreases to zero, the magnetic tuning component 132 returns to the initial position.

[0124] According to some embodiments of the present invention, Figure 8 As shown, the magnetic adjustment component 13 also includes a housing, a housing is provided in the housing, and the magnetic adjustment member 132 and the magnetic adjustment spring 133 connected thereto are provided in the housing. The magnetic adjustment member 132 and the magnetic adjustment spring 133 can be pre-installed in the housing of the housing and installed on the rotor or stator as a pre-assembled unit, which simplifies the installation process, improves production efficiency, and also reduces assembly errors that may be caused by installing the magnetic adjustment member 132 and the magnetic adjustment spring 133 separately.

[0125] According to some embodiments of the present invention, the magnetic adjustment cavity 131 is disposed at at least one axial end of the rotor, and the amount of medium in the magnetic adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or the drive motor 12 and the magnetic adjustment member 132. By adjusting the amount of medium in the magnetic adjustment cavity 131, the magnetic flux is adjusted by the relative position of the rotor and the magnetic adjustment member 132. The magnetic adjustment cavity 131 can be disposed at one axial end of the rotor, or at the other axial end of the rotor, or at both axial ends of the rotor. The magnetic adjustment member 132 can move in the radial direction of the rotor, or in the circumferential direction of the rotor, or move closer to or farther away from the rotor in the axial direction of the rotor, so as to achieve movement relative to the rotor.

[0126] According to some embodiments of the present invention, Fig.23As shown, the magnetic adjustment cavity 131 has a first inlet 131a and a second inlet 131b, and the magnetic adjustment member 132 separates the first inlet 131a and the second inlet 131b. The medium introduced into the magnetic adjustment cavity 131 through the first inlet 131a is suitable for pushing the magnetic adjustment member 132 axially close to the rotor, and the medium introduced into the magnetic adjustment cavity 131 through the second inlet 131b is suitable for pushing the magnetic adjustment member 132 axially away from the rotor, thereby achieving effective adjustment of the magnetic field of the motor. In other words, the medium can be introduced into the magnetic adjustment cavity 131 through the first inlet 131a, or the medium can be introduced into the magnetic adjustment cavity 131 through the second inlet 131b, so as to adjust the axial distance between the magnetic adjustment member 132 and the rotor. The positions of the first inlet 131a and the second inlet 131b are different, so that the positions of the medium introduced into the magnetic adjustment cavity 131 through the first inlet 131a and the second inlet 131b are also different.

[0127] According to some embodiments of the present invention, the magnetic adjustment component 13 also includes an elastic member, which is connected to the magnetic adjustment member 132 and is used to drive the magnetic adjustment member 132 to move in the axial direction away from the rotor. For example, the magnetic adjustment member 132 is provided with an elastic member on at least one of the two sides along the axial direction of the rotor, and the elastic member can drive the magnetic adjustment member 132 to move in the axial direction away from the rotor, so that the magnetic adjustment member 132 moves in the direction away from the rotor to achieve magnetic adjustment flux. Therefore, the magnetic adjustment of the motor has a compound action mode of active action and passive action. The active action magnetic adjustment is hydraulic magnetic adjustment, and the passive action magnetic adjustment is to achieve magnetic adjustment by relying on the elastic potential energy of the elastic member, so that the magnetic adjustment of the motor is simple and reliable.

[0128] According to some embodiments of the present invention, Fig.23 As shown, the magnetic adjustment member 132 includes an axial stator 134, and the amount of medium in the magnetic adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or the drive motor 12 and the axial stator 134. By adjusting the amount of medium in the magnetic adjustment cavity 131, the axial stator 134 moves under the change of medium pressure. For example, the axial stator 134 synchronously approaches or moves away from the rotor in the axial direction, thereby achieving effective adjustment of the magnetic flux.

[0129] In some embodiments of the present invention, the axial stator 134 includes an axial stator core and an axial stator winding. The axial stator core is fixedly connected to the magnetic adjustment slider of the magnetic adjustment component 132, and the axial stator winding is wound around the axial stator core.

[0130] According to some embodiments of the present invention, the magnetic adjustment member 132 provided on the generator 11 can move along its axial direction and / or the magnetic adjustment member 132 provided on the drive motor 12 can move along its axial direction; and / or the magnetic adjustment member 132 provided on the generator 11 can move along its circumferential direction and / or the magnetic adjustment member 132 provided on the drive motor 12 can move along its circumferential direction; and / or the magnetic adjustment member 132 provided on the generator 11 can move along its radial direction and / or the magnetic adjustment member 132 provided on the drive motor 12 can move along its radial direction. There are multiple optional embodiments for the movement of the magnetic adjustment member 132. Specifically, the magnetic adjustment member 132 can move along the circumferential direction of the generator 11 or the drive motor 12, that is, around the rotation axis of the generator 11 or the drive motor 12, and move in a circumferential direction on a horizontal plane. The magnetic adjustment member 132 can also move along the radial direction of the generator 11 or the drive motor 12, that is, starting from the rotation axis of the generator 11 or the drive motor 12, and move inward or outward along the radial direction. The movement of the magnetic adjustment member 132 may also include circumferential and radial composite movement, that is, it moves in both the circumferential direction and the radial direction on the horizontal plane. In addition, the magnetic adjustment member 132 may also move along the axial direction of the generator 11 or the drive motor 12, that is, it moves along the rotation axis of the generator 11 or the drive motor 12. Furthermore, the movement of the magnetic adjustment member 132 may be more complicated, for example, while simultaneously performing circumferential and radial composite movement, it also performs axial movement to form a spiral upward or downward movement path.

[0131] According to some embodiments of the present invention, Figure 7As shown, the drive motor 12 and the generator 11 both include a stator core 14, the stator core 14 includes a stator yoke 141 and a plurality of stator teeth 142 arranged on the inner ring of the stator yoke 141, and the magnetic adjustment cavity 131 is arranged on the stator yoke 141 and adjacent to the stator teeth 142. The stator core 14 is used to carry the stator winding and constitute the magnetic field structure of the drive motor 12 together with the rotor. Among them, the inner ring of the stator yoke 141 is connected to a plurality of stator teeth 142 for conducting magnetic flux. When the drive motor 12 and the generator 11 are working, the magnetic flux will flow from the stator yoke 141 through the stator teeth 142 and flow to the rotor. The stator teeth 142 are the most easily saturated areas in the magnetic circuit of the drive motor 12 and the generator 11. By arranging the magnetic adjustment cavity 131 at the stator yoke 141 and adjacent to the stator teeth 142, the magnetic adjustment member 132 can effectively adjust the magnetic resistance of the magnetic circuit near the stator teeth 142 by moving in the magnetic adjustment cavity 131, so that more magnetic flux can pass through the stator teeth 142, and a wide range of magnetic flux adjustment of the drive motor 12 or the generator 11 can be achieved, thereby enhancing the performance of the drive motor 12 or the generator 11, so that the drive motor 12 or the generator 11 can adapt to different working conditions and requirements, and improve the driving performance of the vehicle. In addition, the magnetic adjustment cavity 131 is arranged at the stator yoke 141, which will not affect the outer diameter of the stator core 14, and therefore will not affect the shell size of the drive motor 12.

[0132] According to some embodiments of the present invention, Figure 10-11 As shown, the magnetic adjustment component 13 includes a first state and a second state. In the first state, the magnetic adjustment spring 133 pushes the magnetic adjustment member 132 to be arranged opposite to the stator tooth portion 142; in the second state, the magnetic adjustment cavity 131 is filled with medium pressure and the magnetic adjustment spring 133 is compressed so that the magnetic adjustment member 132 and the stator tooth portion 142 are misaligned. The magnetic adjustment component 13 can switch between the first state and the second state to adjust the magnetic flux of the drive motor 12. In the first state, the magnetic adjustment spring 133 exerts elastic force to push the magnetic adjustment member 132 to a position opposite to the stator tooth portion 142. At this time, the gap between the magnetic adjustment member 132 and the stator tooth portion 142 is the smallest, the magnetic flux path reaches the widest state, and the magnetic resistance is relatively low, thereby allowing the magnetic circuit to pass a larger amount of magnetic field. When the magnetic flux of the drive motor 12 needs to be adjusted, the magnetic adjustment component 13 will enter the second state.

[0133] In the second state, the magnetic adjustment cavity 131 is filled with a medium, and the pressure of the medium acts on the magnetic adjustment component 132, so that the magnetic adjustment spring 133 is compressed. Due to the effect of the medium pressure, the magnetic adjustment component 132 and the stator tooth 142 are misaligned, so that the magnetic flux path becomes narrower, the magnetic resistance increases, and the magnetic flux decreases accordingly. By adjusting the pressure of the medium, the degree of misalignment between the magnetic adjustment component 132 and the stator tooth 142 can be controlled, thereby achieving continuous adjustment of the magnetic flux of the drive motor 12. In the second state, the drive motor 12 can adjust the magnetic flux according to working requirements to achieve more flexible and efficient performance control. The magnetic adjustment component 13 allows the permanent magnetic field to be effectively adjusted, so that the no-load back electromotive force of the drive motor 12 can be controlled in real time, which helps the drive motor 12 achieve optimal performance in different speed ranges.

[0134] In the low-speed area, by increasing the no-load back EMF, the torque performance and power in the low-speed area can be increased, making the vehicle more powerful when driving at low speed. In the high-speed area, by reducing the no-load back EMF, the core loss can be reduced, the constant power area can be widened, the peak torque and power can be increased, and it also helps to avoid damage to the inverter due to overvoltage. In addition, when the magnetic adjustment component 13 is in the second state (i.e., when magnetic adjustment is required), medium pressure is required to drive the magnetic adjustment component 132; while in the first state of the magnetic adjustment component 13 (i.e., when magnetic adjustment is not required), there is no need to provide a medium for the magnetic adjustment component 13, which helps to reduce energy consumption.

[0135] According to some embodiments of the present invention, Figure 12-Figure 15As shown, the stator core 14 is provided with a plurality of medium flow paths 143 extending in the radial direction of the stator core 14, each medium flow path 143 is connected to at least one magnetic adjustment cavity 131, and a plurality of medium flow paths 143 are connected to the first flow path 151. By providing the medium flow path 143 on the stator core 14, the medium flow path 143 allows the medium pressure to flow in the stator core 14, so as to realize the medium pressure of the first flow path 151 being delivered to the magnetic adjustment cavity 131, and realize the control of the magnetic adjustment component 13. Specifically, when the magnetic adjustment component 13 needs to be adjusted, by adjusting the amount of medium in the first flow path 151, the medium pressure will flow along the medium flow path 143, and enter the corresponding magnetic adjustment cavity 131 through the inlet of the magnetic adjustment cavity 131, and the medium pressure entering the magnetic adjustment cavity 131 will exert pressure on the magnetic adjustment member 132, thereby changing the relative position between the magnetic adjustment member 132 and the stator tooth portion 142. Since there are multiple medium flow paths 143 and each medium flow path 143 is connected to at least one magnetic adjustment cavity 131, each magnetic adjustment cavity 131 can obtain medium pressure supply through the corresponding medium flow path 143, and since multiple medium flow paths 143 are connected to the first flow path 151, by adjusting the amount of medium in the first flow path 151, the medium quality of all medium flow paths 143 can be synchronously adjusted, thereby achieving control of the magnetic adjustment component 13. In addition, since the medium flow path 143 extends in the radial direction of the stator core 14, the path of the medium pressure flow is optimized, the flow resistance is reduced, and the efficiency and response speed of the medium pressure flow are improved.

[0136] According to some embodiments of the present invention, Figure 14-18 As shown, the stator core 14 includes a plurality of stacked stator laminations, wherein a portion of the stator laminations is provided with a medium flow path 143. The stator core 14 is formed by stacking a plurality of stator laminations, which helps to enhance the overall strength and structural stability of the stator core 14, and is also convenient for manufacturing and assembly, thereby improving production efficiency. A portion of the stator laminations among the plurality of stator laminations is provided with a medium flow path 143, and the stator laminations provided with the medium flow path 143 are stacked and combined with the stator laminations not provided with the medium flow path 143, and the stator laminations provided with the medium flow path 143 provide a flow channel for the medium pressure, while the stator laminations not provided with the medium flow path 143 play a role of support and isolation, thereby realizing a stable and reliable flow of the medium pressure in the stator core 14.

[0137] For example, a plurality of stator laminations can be divided into several groups along the axial direction of the stator core 14, each group including a stator lamination provided with a medium flow path 143 and a stator lamination not provided with a medium flow path 143, so that a stator lamination provided with a medium flow path 143 is sandwiched between two stator laminations not provided with a medium flow path 143 in the stator core 14, which can effectively guide and isolate the medium pressure flow in the medium flow path 143, keep the medium pressure of the medium flow path 143 stable, so as to achieve precise adjustment of the magnetic adjustment component 13. In a specific embodiment, the grouping method can be adjusted according to the specific requirements and design parameters of the drive motor 12. The number of stator laminations in each group can be increased as needed to adapt to different medium pressure flow requirements and the overall structural requirements of the stator core 14.

[0138] A vehicle having at least one electric drive assembly 1 according to the present invention is briefly described below.

[0139] The vehicle according to the present invention includes the electric drive assembly 1 in any one of the above embodiments. Since the vehicle according to the present invention includes the electric drive assembly 1 in any one of the above embodiments, the vehicle according to the present invention can achieve magnetic flux regulation of at least one generator 11 or drive motor 12, optimize the performance of the electric drive assembly 1, and improve the overall efficiency and performance of the vehicle.

[0140] According to the vehicle control method of the present invention, Figure 3 As shown, the vehicle includes the electric drive assembly 1 in any of the above embodiments, the drive motor 12 is provided with a magnetic adjustment component 13, and the control method includes collecting the torque and speed values ​​of the drive motor 12, and determining whether the drive motor 12 needs magnetic adjustment according to the collection results; when the drive motor 12 needs magnetic adjustment, the medium amount of the first flow path 151 is adjusted to change the position of the magnetic adjustment component 13. The drive motor 12 is provided with a magnetic adjustment component 13, so that the drive motor 12 can adjust the magnetic flux according to different working conditions and requirements to optimize the performance of the drive motor 12. The control method is to determine whether a magnetic adjustment operation is required according to the operating status of the drive motor 12, and perform corresponding control when necessary. By collecting the torque and speed values ​​of the drive motor 12, the working state and performance of the drive motor 12 can be determined. According to the collected torque and speed values, the vehicle system will perform a series of calculations and comparisons based on a preset algorithm or model to determine whether the current working state of the drive motor 12 needs magnetic adjustment. If the vehicle system determines that the drive motor 12 needs magnetic adjustment, the medium amount of the first flow path 151 will be adjusted. The change in the medium pressure of the first flow path 151 directly affects the pressure on the magnetic adjustment component 13, thereby changing the position of the magnetic adjustment component 13. By adjusting the position of the magnetic adjustment component 13, the magnetic flux of the drive motor 12 can be controlled, thereby optimizing the performance of the drive motor 12, such as improving efficiency, reducing energy consumption or increasing power output.

[0141] According to some embodiments of the present invention, Figure 4 As shown, the generator 11 is provided with a magnetic adjustment component 13, and the vehicle includes a series or parallel working condition. When the vehicle is in the series or parallel working condition, the control method also includes collecting the torque and speed values ​​of the engine 18, and determining whether the generator 11 needs magnetic adjustment according to the collected results; when it is determined that the generator 11 needs magnetic adjustment, the medium amount of the first flow path 151 is adjusted to change the position of the magnetic adjustment component 13. The generator 11 is provided with a magnetic adjustment component 13, so that the generator 11 can adjust the magnetic flux according to different working conditions and requirements to optimize the performance of the generator 11. The vehicle has multiple working modes, including series working conditions and parallel working conditions. In the series working condition, the engine 18 and the drive motor 12 are connected in sequence, and the engine 18 can cooperate with the generator 11 to power the drive motor 12; while in the parallel working condition, the engine 18 and the drive motor 12 can work simultaneously and provide power together. The control method is to determine whether the magnetic adjustment operation is required according to the operating condition of the engine 18, and perform corresponding control when necessary. By collecting the torque and speed values ​​of the engine 18, the working state and performance of the generator 11 can be judged. According to the collected torque and speed values, the vehicle system will perform a series of calculations and comparisons based on a preset algorithm or model to determine whether the current working state of the generator 11 requires magnetic adjustment. If the vehicle system determines that the vehicle needs magnetic adjustment, it will adjust the amount of medium in the first flow path 151. The change in the amount of medium in the first flow path 151 will directly affect the pressure on the magnetic adjustment component 13, thereby changing the position of the magnetic adjustment component 13. By adjusting the position of the magnetic adjustment component 13, the magnetic flux of the generator 11 can be controlled, thereby optimizing the performance of the generator 11.

[0142] According to some embodiments of the present invention, after adjusting the amount of medium in the first flow path 151 to change the position of the magnetic adjustment component 13, the control method further includes reducing the amount of medium in the first cooling flow path 153. When the generator 11 needs to perform a magnetic adjustment operation, the position of the magnetic adjustment component 13 is first changed by adjusting the amount of medium in the first flow path 151 to optimize the magnetic field distribution and performance of the generator 11. After the magnetic adjustment operation, the efficiency of the generator 11 is improved and the heat generation is reduced, so the amount of medium in the first cooling flow path 153 can be appropriately reduced.

[0143] According to some embodiments of the present invention, the drive motor 12 is provided with a first cooling flow path 153, and the control method further includes: when the position of the magnetic adjustment component 13 is adjusted, the amount of medium in the first cooling flow path 153 of the drive motor 12 is adjusted. The position of the magnetic adjustment component 13 is changed, and the magnetic flux of the drive motor 12 can be increased or decreased, so the heat generation of the drive motor 12 will also change accordingly. By adjusting the amount of medium in the first cooling flow path 153, the change in heat generation can be adapted to improve energy efficiency.

[0144] According to some embodiments of the present invention, when the position of the magnetic adjustment component 13 is adjusted to reduce the magnetic flux of the drive motor 12, the amount of medium in the first cooling flow path 153 of the drive motor 12 is reduced. By adjusting the position of the magnetic adjustment component 13, the magnetic flux of the drive motor 12 is reduced, and energy loss is reduced, so the heat generation is reduced accordingly. By adjusting the amount of medium in the first cooling flow path 153, energy consumption can be reduced while ensuring that the drive motor 12 is fully cooled.

[0145] According to some embodiments of the present invention, after the position of the magnetic adjustment component 13 is changed, the medium amount of the first cooling flow path 153 of the drive motor 12 can be reduced after a set time. Alternatively, after the position of the magnetic adjustment component 13 is changed, the input torque of the drive motor 12 is detected, and if it is detected that the input current of the drive motor 12 decreases, the medium amount of the first cooling flow path 153 is reduced.

[0146] According to some embodiments of the present invention, Figure 5 As shown, the vehicle controller collects the torque and speed values ​​of the drive motor 12 under the current working condition. According to the torque and speed values, the vehicle controller uses the embedded function to determine whether the current working condition is close to the area where magnetic adjustment control is required. When the working condition is close to the magnetic adjustment area, the third control valve 164 starts to work, so that the medium pressure of the first flow path 151 reaches the pressure required to control the movement of the magnetic adjustment component 13. When the working condition enters the magnetic adjustment area, the first control valve 161 quickly adjusts the pressure, controls the movement of the magnetic adjustment component 13, adjusts the magnetic field of the drive motor 12 in real time, and optimizes the efficiency of the drive motor 12. The position signal of the movement of the magnetic adjustment component 13 is fed back to the first control valve 161 to achieve precise control. After the efficiency of the drive motor 12 is improved, the cooling demand is reduced, and the flow of the first cooling flow path 153 is adjusted accordingly. The pressure signal of the first control valve 161 is fed back to the control algorithm, and the control algorithm adjusts the total flow of the second flow path 152 by controlling the opening of the second control valve 162 according to the flow signal of the second flow path 152 and the pressure signal of the first control valve 161.

[0147] According to some embodiments of the present invention, the generator 11 is provided with a first cooling flow path 153, and the control method further includes: when the position of the magnetic adjustment component 13 is adjusted, the amount of medium in the first cooling flow path 153 of the generator 11 is adjusted. The position of the magnetic adjustment component 13 is changed, and the magnetic flux of the generator 11 can be increased or decreased, so the heat generation of the generator 11 will also change accordingly. By adjusting the amount of medium in the first cooling flow path 153, the change in heat generation can be adapted to improve energy efficiency.

[0148] According to some embodiments of the present invention, when the position of the magnetic adjustment component 13 is adjusted to reduce the magnetic flux of the generator 11, the amount of medium in the first cooling flow path 153 of the generator 11 is reduced. By adjusting the position of the magnetic adjustment component 13 and reducing the magnetic flux of the generator 11, energy loss can be reduced, and thus the heat generation is reduced accordingly. By adjusting the amount of medium in the first cooling flow path 153, energy consumption can be reduced while ensuring that the generator 11 is fully cooled.

[0149] According to some embodiments of the present invention, after the position of the magnetic adjustment component 13 is changed, the medium amount of the first cooling flow path 153 of the generator 11 can be reduced after a set time. Alternatively, after the position of the magnetic adjustment component 13 is changed, the input torque of the generator 11 is detected, and if it is detected that the input current of the generator 11 decreases, the medium amount of the first cooling flow path 153 is reduced.

[0150] According to some embodiments of the present invention, Figure 6 As shown, the magnetic adjustment principle of the drive motor 12 of the vehicle in hybrid mode is similar to that in pure electric mode. The magnetic adjustment principle of the drive motor 12 has been described in the previous text, and the magnetic adjustment principle of the generator 11 is only described below. The vehicle controller collects the torque and speed values ​​of the engine 18 under the current working condition. According to the torque and speed values, the vehicle controller uses the embedded function to determine whether the current working condition is close to the area where magnetic adjustment control is required. When the working condition is close to the magnetic adjustment area, the third control valve 164 starts to work, so that the medium pressure of the first flow path 151 reaches the pressure required to control the movement of the magnetic adjustment component 13. When the working condition enters the magnetic adjustment area, the first control valve 161 quickly adjusts the pressure, controls the movement of the magnetic adjustment component 13, adjusts the magnetic field of the generator 11 in real time, and optimizes the efficiency of the generator 11. The position signal of the movement of the magnetic adjustment component 13 is fed back to the first control valve 161 to achieve precise control. After the efficiency of the generator 11 is improved, the cooling demand is reduced, and the flow of the first cooling flow path 153 is adjusted accordingly. The pressure signal of the first control valve 161 is fed back to the control algorithm, and the control algorithm adjusts the total flow of the second flow path 152 by controlling the opening of the second control valve 162 according to the flow signal of the second flow path 152 and the pressure signal of the first control valve 161 .

[0151] The following briefly describes a vehicle to which the above control method is applied according to the present invention.

[0152] The vehicle according to the present invention includes an execution module for executing the control method in any one of the above embodiments. Since the vehicle according to the present invention includes an execution module for executing the control method in any one of the above embodiments, the vehicle according to the present invention can intelligently adjust the magnetic flux of the drive motor 12 according to actual working conditions and requirements, thereby optimizing the performance of the drive motor 12, so that the vehicle can maintain the best performance state under various working conditions.

[0153] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0154] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0155] In the description of the present invention, "plurality" means two or more.

[0156] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0157] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0158] In the description of this specification, the description with reference to the terms "some embodiments", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least some embodiments or examples of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0159] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric drive assembly, characterized in that: include: Generator (11); A drive motor (12), the drive motor (12) being driveably connected to the generator (11); A magnetic flux regulating component (13), the magnetic flux regulating component (13) being used to regulate the magnetic flux of the generator (11) and / or the drive motor (12); a first flow path (151), the first flow path (151) being connected to the magnetic adjustment component (13), the amount of medium in the first flow path (151) being adjustable to adjust the position of the magnetic adjustment component (13); The magnetic adjustment component (13) comprises a magnetic adjustment cavity (131) and a magnetic adjustment member (132); the magnetic adjustment member (132) is movably disposed in the magnetic adjustment cavity (131) to adjust the magnetic flux of the generator (11) and / or the drive motor (12); The magnetic adjustment cavity has a first inlet (131a) and a second inlet (131b); the magnetic adjustment component (132) separates the first inlet (131a) from the second inlet (131b); a medium is introduced into the magnetic adjustment cavity (131) through the first inlet (131a) or a medium is introduced into the magnetic adjustment cavity (131) through the second inlet (131b) so as to push the magnetic adjustment component (132) to move; The magnetic adjustment component (132) provided on the generator (11) can move along its axial direction and / or the magnetic adjustment component (132) provided on the drive motor (12) can move along its axial direction; and / or The magnetic adjustment component (132) provided on the generator (11) can move along its circumferential direction and / or the magnetic adjustment component (132) provided on the drive motor (12) can move along its circumferential direction; and / or The magnetic adjustment component (132) provided on the generator (11) can move in its radial direction and / or the magnetic adjustment component (132) provided on the drive motor (12) can move in its radial direction.

2. The electric drive assembly according to claim 1, characterized in that: Also includes: A first control valve (161), the first control valve (161) is connected to the first flow path (151) to adjust the amount of medium in the first flow path (151).

3. The electric drive assembly according to claim 2, characterized in that: Also includes: a first cooling flow path (153), the first cooling flow path (153) being used to cool the generator (11) and / or the drive motor (12); A second flow path (152), wherein the second flow path (152) is connected to the first cooling flow path (153), and the amount of medium in the second flow path (152) is adjustable to adjust the amount of medium in the first cooling flow path (153).

4. The electric drive assembly according to claim 3, characterized in that: Also includes: A second control valve (162), the second control valve (162) is connected to the second flow path (152) to adjust the amount of medium in the first cooling flow path (153).

5. The electric drive assembly according to claim 4, characterized in that: It also includes a first pump (171) connected to the medium storage tank, wherein the first pump (171) is connected to the first flow path (151) and the second flow path (152) respectively.

6. The electric drive assembly according to claim 5, characterized in that: Also includes: A pressure regulating valve (163), the pressure regulating valve (163) being connected between the first pump (171) and the first flow path (151) to regulate the medium pressure of the first flow path (151).

7. The electric drive assembly according to claim 6, characterized in that: Also includes: A third control valve (164), the third control valve (164) is connected to the pressure regulating valve (163) to control the outlet pressure of the pressure regulating valve (163).

8. The electric drive assembly according to claim 6, characterized in that: The first flow path (151) is connected to the second flow path (152) via the pressure regulating valve (163) so that the medium in the first flow path (151) can flow into the second flow path (152).

9. The electric drive assembly according to claim 5, characterized in that: The outlet of the second control valve (162) is connected to the inlet of the first pump (171).

10. The electric drive assembly according to claim 3, characterized in that: The vehicle also comprises an engine (18) and a coupling mechanism (19), wherein the engine (18) is connected to the coupling mechanism (19), and the coupling mechanism (19) has a first state and a second state. In the first state, the engine (18) is transmission-connected to the axle via the coupling mechanism (19), and in the second state, the engine (18) is decoupled from the axle.

11. The electric drive assembly according to claim 10, characterized in that: Also includes: A second cooling flow path (154), wherein the second cooling flow path (154) is connected to the coupling mechanism (19), and the second flow path (152) is connected to the second cooling flow path (154).

12. The electric drive assembly according to claim 10, characterized in that: The coupling mechanism (19) is selectively connected to the first flow path (151) to switch between the first state and the second state.

13. The electric drive assembly according to claim 5, characterized in that: It also includes a second pump (172) connected to the medium storage tank, and the second pump (172) is connected to the second flow path (152).

14. The electric drive assembly according to claim 4, characterized in that: The electric drive assembly is configured to control the second control valve (162) to adjust the amount of medium in the second flow path (152) after the first control valve (161) is opened to adjust the amount of medium in the first flow path (151).

15. The electric drive assembly according to claim 1, characterized in that: The magnetic adjustment component (132) is movably arranged on the stator and / or rotor of the generator (11) and / or the drive motor (12).

16. The electric drive assembly according to claim 15, characterized in that: The magnetic adjustment member (132) is movably arranged on a stator yoke (141) of the stator of the generator (11) and / or the drive motor (12); the amount of medium in the magnetic adjustment cavity (131) is adjustable to adjust the magnetic flux passing through the stator teeth (142) of the stator.

17. The electric drive assembly according to claim 16, characterized in that: There are a plurality of magnetic adjustment components (132), and when at least some of the magnetic adjustment components (132) move, the magnetic flux passing through the stator teeth (142) can be adjusted.

18. The electric drive assembly according to claim 15, characterized in that: The magnetic adjustment cavity (131) is arranged in the rotor of the generator (11) and / or the drive motor (12), and the amount of medium in the magnetic adjustment cavity (131) is adjustable to adjust the relative position of the rotor of the generator (11) and / or the drive motor (12) and the magnetic adjustment component (132).

19. The electric drive assembly according to claim 18, characterized in that: A rotor flow path (2011) is provided on the rotor core (201) of the rotor of the generator (11) and / or the drive motor (12), and the rotor flow path (2011) is connected to the magnetic modulation cavity (131).

20. The electric drive assembly according to claim 19, characterized in that: A rotating shaft flow path (2021) is provided on the rotating shaft (202) of the rotor of the generator (11) and / or the drive motor (12); the rotating shaft flow path (2021) is connected to the magnetic modulation cavity (131) through the rotor flow path (2011).

21. The electric drive assembly according to claim 20, characterized in that: The rotor of the generator (11) and / or the drive motor (12) further comprises a partition flow path (2031) arranged in a rotor partition (203); the rotor partition (203) is arranged on at least one axial side of the rotor of the generator (11) and / or the drive motor (12); and the partition flow path (2031) is connected to the magnetic modulation cavity (131).

22. The electric drive assembly according to claim 21, characterized in that: A rotating shaft flow path (2021) is provided on the rotating shaft (202) of the rotor of the generator (11) and / or the drive motor (12); the rotating shaft flow path (2021) is connected to the magnetic modulation cavity (131) through the partition flow path.

23. The electric drive assembly according to claim 1, characterized in that: The magnetic adjustment component (13) further comprises: a magnetic adjustment spring (133), the magnetic adjustment spring (133) being connected to the magnetic adjustment component (132), the elastic force of the magnetic adjustment spring (133) and the medium pressure of the magnetic adjustment cavity (131) cooperating to adjust the position of the magnetic adjustment component (132).

24. The electric drive assembly according to claim 23, characterized in that: The magnetic adjustment component (13) further comprises: a shell, wherein a housing is provided in the shell, and the magnetic adjustment component (132) and the magnetic adjustment spring (133) connected thereto are provided in the housing.

25. The electric drive assembly according to claim 15, characterized in that: The magnetic adjustment cavity (131) is arranged at at least one axial end of the rotor, and the amount of medium in the magnetic adjustment cavity (131) is adjustable to adjust the relative position of the rotor of the generator (11) and / or the drive motor (12) and the magnetic adjustment component (132).

26. The electric drive assembly according to claim 25, characterized in that: Introducing a medium into the magnetic tuning cavity (131) through the first inlet (131a) is suitable for pushing the magnetic tuning component (132) axially closer to the rotor, and introducing a medium into the magnetic tuning cavity (131) through the second inlet (131b) is suitable for pushing the magnetic tuning component (132) axially away from the rotor.

27. The electric drive assembly according to claim 25, characterized in that: The magnetic adjustment component (13) further comprises: an elastic member, the elastic member being connected to the magnetic adjustment member (132) and being used to drive the magnetic adjustment member (132) to move in an axial direction away from the rotor.

28. The electric drive assembly according to claim 25, characterized in that: The magnetic adjustment component (132) comprises an axial stator (134), and the amount of medium in the magnetic adjustment cavity (131) is adjustable to adjust the relative position of the rotor of the generator (11) and / or the drive motor (12) and the axial stator (134).

29. A vehicle, characterized in that: Comprising at least one electric drive assembly according to any one of claims 1-28.

30. A vehicle control method, characterized in that: The vehicle comprises an electric drive assembly according to any one of claims 1 to 28, the drive motor (12) is provided with the magnetic adjustment component (13), and the control method comprises: Collecting torque and rotation speed values ​​of the drive motor (12), and determining whether the drive motor (12) needs magnetic adjustment based on the collected results; When the drive motor (12) needs to be magnetically adjusted, the amount of medium in the first flow path (151) is adjusted to change the position of the magnetic adjustment component (13) of the drive motor (12).

31. The vehicle control method according to claim 30, characterized in that: The drive motor (12) is provided with a first cooling flow path (153), and the control method further comprises: When the position of the magnetic adjustment component (13) is adjusted, the amount of medium in the first cooling flow path (153) of the drive motor (12) is adjusted.

32. The vehicle control method according to claim 31, characterized in that: When the position of the magnetic adjustment component (13) is adjusted to reduce the magnetic flux of the drive motor (12), the amount of medium in the first cooling flow path (153) of the drive motor (12) is reduced.

33. The vehicle control method according to claim 30, characterized in that: The generator (11) is provided with the magnetic adjustment component (13), the vehicle includes a series connection or a parallel connection condition, and when the vehicle is in the series connection or the parallel connection condition, the control method further includes: Collecting torque and speed values ​​of the engine (18), and determining whether the generator (11) needs magnetic adjustment based on the collected results; When the generator (11) needs to be magnetically adjusted, the amount of medium in the first flow path (151) is adjusted to change the position of the magnetic adjustment component (13) of the generator (11).

34. The vehicle control method according to claim 32, characterized in that: The generator (11) is provided with a first cooling flow path (153), and the control method further comprises: When the position of the magnetic adjustment component (13) is adjusted, the amount of medium in the first cooling flow path (153) of the generator (11) is adjusted.

35. The vehicle control method according to claim 34, characterized in that: When the position of the magnetic adjustment component (13) is adjusted to reduce the magnetic flux of the generator (11), the amount of medium in the first cooling flow path (153) of the generator (11) is reduced.

36. A vehicle, characterized in that: The method comprises an execution module for executing the control method according to any one of claims 30-35.

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