Vehicle having electric drive assembly and applying vehicle control method

Abstract

A vehicle having an electric drive assembly and applying a vehicle control method. The electric drive assembly comprises: a generator (11); a magnetic flux adjustment assembly (13), which is configured to adjust the magnetic flux of the generator (11); and a first flow path (151), which is connected to the magnetic flux adjustment assembly (13), wherein the medium quantity of the first flow path (151) can be adjusted, so as to adjust the position of the magnetic flux adjustment assembly (13). The performance parameters of the generator can be changed so as to reduce the energy consumption of the generator, thereby improving the efficiency and performance of the electric drive assembly.

Description

Vehicles equipped with electric drive assemblies and employing vehicle control methods

[0001] Cross-reference to related applications

[0002] This disclosure is based on and claims priority to Chinese patent applications No. 2024109261585, filed on July 11, 2024, and No. 2024109261602, filed on July 11, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of vehicle technology, and more specifically, to a vehicle having an electric drive assembly and applying a vehicle control method. Background Technology

[0004] The electric drive system is the power source of a vehicle, responsible for converting electrical energy into mechanical energy to propel the vehicle forward. An electric drive system typically includes an electric motor and related flow path systems.

[0005] Traditional electric motors, such as electrically excited synchronous motors and permanent magnet synchronous motors, while each having their advantages, also have obvious performance shortcomings. The efficiency issues 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.

[0006] The electric drive assemblies in related technologies have some shortcomings. Due to the complex and varied operating conditions of the motor, the motor cannot always operate in the high-efficiency range, which reduces the efficiency and performance of the electric drive assembly.

[0007] Public content

[0008] This disclosure aims to at least address one of the technical problems existing in the prior art. To this end, one object of this disclosure is to provide an electric drive assembly. According to the electric drive assembly of this disclosure, by adjusting the amount of medium in the first flow path, the position of the magnetic flux adjustment component can be changed to adjust the magnetic flux of the generator, thereby changing the performance parameters of the generator, reducing the energy consumption of the generator, and improving the efficiency and performance of the electric drive assembly.

[0009] This disclosure also proposes a vehicle having the above-described electric drive assembly.

[0010] This disclosure also proposes a control method for a vehicle having the above-described electric drive assembly.

[0011] This disclosure also proposes a vehicle that applies the above-described control method.

[0012] The electric drive assembly according to this disclosure includes: a generator; a magnetic flux adjustment assembly for adjusting the magnetic flux of the generator; and a first flow path connected to the magnetic flux adjustment assembly, wherein the amount of medium in the first flow path is adjustable to adjust the position of the magnetic flux adjustment assembly.

[0013] According to the electric drive assembly of this disclosure, a generator is used to generate driving force. By providing a magnetic flux adjustment component, the magnetic flux of the generator can be adjusted by changing the position of the magnetic flux adjustment component, thereby changing the performance parameters of the generator, reducing the energy consumption of the generator, and improving the efficiency and performance of the electric drive assembly. The electric drive assembly also includes a first flow path. The medium pressure in the first flow path can act on the magnetic flux adjustment component. By adjusting the medium flow rate in the first flow path, the medium pressure in the first flow path can be adjusted. The magnetic flux adjustment component will become unstable and move under the pressure change, thereby changing the position of the magnetic flux adjustment component to adjust the magnetic flux of the generator.

[0014] According to some embodiments of this disclosure, the electric drive assembly further includes: a drive motor, the drive motor being driveably connected to the generator, and the magnetic flux adjustment component being used to adjust the magnetic flux of the generator and / or the drive motor.

[0015] According to some embodiments of this disclosure, the electric drive assembly further includes: a first control valve connected in series in the first flow path to regulate the amount of medium in the first flow path.

[0016] According to some embodiments of this disclosure, the electric drive assembly further includes: a first cooling flow path for heat exchange with the heat-generating components of the generator; and a second flow path connected to the first cooling flow path, wherein the amount of medium in the second flow path is adjustable to adjust the amount of medium in the first cooling flow path.

[0017] According to some embodiments of this disclosure, the electric drive assembly further includes a first control valve connected to the first flow path to adjust the amount of medium in the first flow path to adjust the position of the magnetizing component.

[0018] According to some embodiments of this disclosure, the electric drive assembly further includes: a first cooling flow path for cooling the generator and the drive motor; and a second flow path connected to the first cooling flow path, wherein the amount of medium in the second flow path is adjustable to adjust the amount of medium in the first cooling flow path.

[0019] According to some embodiments of this disclosure, the electric drive assembly further includes a second control valve connected to the second flow path to regulate the amount of medium in the first cooling flow path.

[0020] According to some embodiments of this disclosure, the electric drive assembly further includes a second control valve connected in series in the second flow path to regulate the amount of medium in the first cooling flow path.

[0021] According to some embodiments of this disclosure, the electric drive assembly further includes: a first pump connected to a media storage pool, wherein the first flow path and the second flow path are respectively connected to the first pump.

[0022] According to some embodiments of this disclosure, the electric drive assembly further includes a pressure regulating valve connected between the first pump and the first flow path to regulate the medium pressure of the first flow path.

[0023] According to some embodiments of this disclosure, the electric drive assembly further includes a pressure regulating valve connected in series between the first flow path and the first pump to regulate the medium pressure of the first flow path.

[0024] According to some embodiments of this disclosure, the electric drive assembly further includes a third control valve connected to the pressure regulating valve to control the outlet pressure of the pressure regulating valve.

[0025] According to some embodiments of this disclosure, the first flow path is connected to the second flow path via the pressure regulating valve so that the medium in the first flow path can flow to the second flow path.

[0026] According to some embodiments of this disclosure, the outlet of the second control valve is connected to the inlet of the first pump.

[0027] According to some embodiments of this disclosure, the electric drive assembly further includes an engine and a coupling mechanism, the engine being connected to the coupling mechanism, the coupling mechanism having a first state and a second state, in the first state the engine being connected to the axle drive via the coupling mechanism, and in the second state the engine being decoupled from the axle; the engine is provided with a second cooling flow path for cooling it, the second flow path being connected to the second cooling flow path.

[0028] According to some embodiments of this disclosure, the electric drive assembly includes a second cooling flow path, which is connected to the coupling mechanism, and the second flow path is connected to the second cooling flow path.

[0029] According to some embodiments of this disclosure, the coupling mechanism is selectively connected to the first flow path to switch between the first state and the second state.

[0030] According to some embodiments of this disclosure, the electric drive assembly further includes a second pump connected to a media storage pool, the second pump being connected to the second flow path.

[0031] According to some embodiments of this disclosure, the electric drive assembly is configured to adjust the amount of medium in the second flow path to adjust the amount of medium in the first cooling flow path after controlling the amount of medium in the first flow path to move the magnetizing component to a set position.

[0032] According to some embodiments of this disclosure, 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.

[0033] According to some embodiments of this disclosure, the magnetic flux adjustment assembly includes a magnetic flux adjustment cavity and a magnetic flux adjustment element, wherein the magnetic flux adjustment element is movably disposed within the magnetic flux adjustment cavity to adjust the magnetic flux of the generator.

[0034] According to some embodiments of this disclosure, the magnetic adjustment element is movably disposed on the stator and / or rotor of the generator.

[0035] According to some embodiments of this disclosure, the magnetic adjustment element is movably disposed on the stator yoke of the generator stator, and the amount of medium in the magnetic adjustment cavity is adjustable to adjust the magnetic flux through the stator teeth of the stator.

[0036] According to some embodiments of this disclosure, there are multiple magnetic adjustment elements, and at least some of the magnetic adjustment elements can adjust the magnetic flux through the stator teeth when they move.

[0037] According to some embodiments of this disclosure, the magnetic adjustment cavity is disposed in the rotor of the generator, and the amount of medium in the magnetic adjustment cavity is adjustable to adjust the relative position of the rotor of the generator and the magnetic adjustment element.

[0038] According to some embodiments of this disclosure, the rotor core of the generator is provided with a rotor flow path, and the rotor flow path is connected to the magnetic adjustment cavity.

[0039] According to some embodiments of this disclosure, the rotor shaft of the generator is provided with a shaft flow path, and the shaft flow path is connected to the magnetic adjustment cavity through the rotor flow path.

[0040] According to some embodiments of this disclosure, the rotor of the generator further includes a partition flow path disposed in a rotor partition, the rotor partition being disposed on at least one side of the rotor of the generator along the axial direction, and the partition flow path being connected to the magnetic adjustment cavity.

[0041] According to some embodiments of this disclosure, the rotor shaft of the generator is provided with a shaft flow path, and the shaft flow path is connected to the magnetic adjustment cavity through the partition flow path.

[0042] According to some embodiments of this disclosure, the magnetic adjustment assembly further includes: a magnetic adjustment spring, the magnetic adjustment spring being connected to the magnetic adjustment element, the elastic force of the magnetic adjustment spring cooperating with the medium pressure of the magnetic adjustment cavity to adjust the position of the magnetic adjustment element.

[0043] According to some embodiments of this disclosure, the magnetic adjustment assembly further includes: a housing, the housing having a receiving cavity, and the magnetic adjustment spring connected to the magnetic adjustment element being disposed within the receiving cavity.

[0044] According to some embodiments of this disclosure, the magnetic adjustment cavity is disposed at at least one end of the rotor along its axial direction, and the amount of medium in the magnetic adjustment cavity is adjustable to adjust the relative position of the rotor of the generator and the magnetic adjustment element.

[0045] According to some embodiments of this disclosure, the magnetic adjustment cavity has a first inlet and a second inlet, the magnetic adjustment element separates the first inlet and the second inlet, a medium is introduced into the magnetic adjustment cavity through the first inlet to push the magnetic adjustment element axially closer to the rotor, and a medium is introduced into the magnetic adjustment cavity through the second inlet to push the magnetic adjustment element axially away from the rotor.

[0046] According to some embodiments of this disclosure, the magnetic adjustment assembly further includes an elastic element connected to the magnetic adjustment element for driving the magnetic adjustment element to move in an axial direction away from the rotor.

[0047] According to some embodiments of this disclosure, the magnetic adjustment element includes an axial stator, and the amount of medium in the magnetic adjustment cavity is adjustable to adjust the relative position of the rotor of the generator and the axial stator.

[0048] According to some embodiments of this disclosure, the magnetic adjustment element may be moved circumferentially along the generator; and / or the magnetic adjustment element may be moved radially along the generator; and / or the magnetic adjustment element may be moved axially along the generator.

[0049] According to some embodiments of this disclosure, the magnetic flux adjustment assembly includes a magnetic flux adjustment cavity and a magnetic flux adjustment element, wherein the magnetic flux adjustment element is movably disposed within the magnetic flux adjustment cavity to adjust the magnetic flux of the generator and / or the drive motor.

[0050] The following is a brief description of a vehicle according to the present disclosure having at least one of the above-described electric drive assemblies.

[0051] The vehicle according to this disclosure includes the electric drive assembly described in any of the foregoing embodiments. Because the vehicle according to this disclosure includes the electric drive assembly described in any of the foregoing embodiments, the vehicle according to this disclosure can effectively adjust the performance parameters of the generator and control the operating temperature, keeping the generator in good condition, thereby significantly improving the efficiency and performance of the vehicle.

[0052] According to the vehicle control method disclosed herein, the vehicle includes the electric drive assembly described in any of the above embodiments, the electric drive assembly includes a first cooling flow path for heat exchange with the heat-generating components of the generator, and the control method includes: acquiring the torque and speed values ​​of the generator, determining whether the vehicle needs magnetic adjustment based on the acquisition results; when the vehicle needs magnetic adjustment, the electric drive assembly changes the position of the magnetic adjustment component by adjusting the amount of medium in the first flow path.

[0053] The control method determines whether magnetostriction is needed based on the generator's operating status and performs corresponding control when necessary. By collecting the generator's torque and speed values, the generator's operating status and performance can be determined. Based on the collected torque and speed values, the vehicle system performs a series of calculations and comparisons using a preset algorithm or model to determine whether magnetostriction is required. If the vehicle system determines that magnetostriction is needed, the electric drive assembly adjusts the medium flow in the first flow path. Changes in the medium flow in the first flow path directly affect the pressure on the magnetostriction assembly, thereby changing its position. By adjusting the position of the magnetostriction assembly, the generator's magnetic flux can be controlled, thereby optimizing generator performance, such as improving efficiency, reducing energy consumption, or increasing power output.

[0054] According to some embodiments of this disclosure, when the electric drive assembly changes the position of the magnetizing component by adjusting the amount of medium in the first flow path, the control method further includes: adjusting the amount of medium in the first cooling flow path.

[0055] The following is a brief description of a vehicle according to the present disclosure having at least one of the above-described electric drive assemblies.

[0056] According to the vehicle control method disclosed herein, the vehicle includes the electric drive assembly described in any of the above embodiments, the drive motor is equipped with the magnetic adjustment component, and the control method includes: acquiring the torque and speed values ​​of the drive motor, determining whether the drive motor needs magnetic adjustment based on the acquisition results; when the drive motor needs magnetic adjustment, changing the position of the magnetic adjustment component of the drive motor by adjusting the medium volume of the first flow path. The drive motor is equipped with a magnetic adjustment component, allowing the drive motor to adjust the magnetic flux according to different operating conditions and requirements to optimize drive motor performance. The control method determines whether magnetic adjustment is needed based on the operating status of the drive motor and performs corresponding control when necessary. By acquiring the torque and speed values ​​of the drive motor, the operating state and performance of the drive motor can be determined. Based on the acquired torque and speed values, the vehicle system performs a series of calculations and comparisons based on a preset algorithm or model to determine whether the current operating state of the drive motor requires magnetic adjustment. If the vehicle system determines that the drive motor needs magnetic adjustment, it will adjust the medium volume of the first flow path. Changes in the medium pressure of the first flow path 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 flux adjustment 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.

[0057] According to some embodiments of this disclosure, the generator is equipped with the magnetic adjustment component, and the vehicle includes series or parallel operating conditions. When the vehicle is in the series or parallel operating condition, the control method further includes: collecting engine torque and speed values, determining whether the generator needs magnetic adjustment based on the collection results; when the generator needs magnetic adjustment, changing the position of the magnetic adjustment component of the generator by adjusting the amount of medium in the first flow path.

[0058] According to some embodiments of this disclosure, the drive motor is provided with a first cooling flow path, and the control method further includes: when the position of the magnetizing component is adjusted, adjusting the amount of medium in the first cooling flow path of the drive motor.

[0059] According to some embodiments of this disclosure, when the position of the magnetic adjustment 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.

[0060] According to some embodiments of this disclosure, the generator is provided with a first cooling flow path, and the control method further includes: when the position of the magnetic adjustment component is adjusted, adjusting the amount of medium in the first cooling flow path of the generator.

[0061] According to some embodiments of this disclosure, after adjusting the position of the magnetizing component to reduce the magnetic flux of the generator, the amount of medium in the first cooling flow path of the generator is reduced.

[0062] The following is a brief description of a vehicle that applies the control method described above according to this disclosure.

[0063] The vehicle according to this disclosure includes the electric drive assembly described in any of the foregoing embodiments; and / or an execution module that performs the control method described in any of the foregoing embodiments. Since the vehicle according to this disclosure includes an execution module that performs the control method described in any of the foregoing embodiments, the vehicle according to this disclosure can perform magnetization operations based on the real-time operating status of the generator, optimizing generator performance and making the vehicle's operation more efficient and stable.

[0064] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0065] Figure 1 is an architectural diagram of an electric drive assembly according to some embodiments of the present disclosure;

[0066] Figure 2 is an architectural diagram of an electric drive assembly according to some other embodiments of the present disclosure;

[0067] Figure 3 is a flowchart of a vehicle control method according to an embodiment of the present disclosure;

[0068] Figure 4 is a schematic diagram of a vehicle control method in pure electric mode according to an embodiment of the present disclosure;

[0069] Figure 5 is an architectural diagram of an electric drive assembly according to some embodiments of the present disclosure;

[0070] Figure 6 is an architectural diagram of an electric drive assembly according to some other embodiments of the present disclosure;

[0071] Figure 7 is a flowchart of a vehicle control method for a drive motor according to an embodiment of the present disclosure;

[0072] Figure 8 is a flowchart of a vehicle control method with respect to a generator according to an embodiment of the present disclosure;

[0073] Figure 9 is a schematic diagram of a vehicle control method in pure electric mode according to an embodiment of the present disclosure;

[0074] Figure 10 is a schematic diagram of a vehicle control method in hybrid mode according to an embodiment of the present disclosure;

[0075] Figure 11 is a schematic diagram of the stator core in the drive motor of an electric drive assembly according to some embodiments of the present disclosure;

[0076] Figure 12 is a schematic diagram of the structure of the magnetizing component in the drive motor of an electric drive assembly according to some embodiments of the present disclosure;

[0077] Figure 13 is a schematic diagram of the structure of the magnetic adjustment component and the magnetic adjustment spring cooperating in the drive motor of the electric drive assembly according to some embodiments of the present disclosure.

[0078] Figure 14 is a magnetic field diagram of the drive motor of an electric drive assembly according to some embodiments of the present disclosure when the adjusting magnetic element is aligned with the stator teeth.

[0079] Figure 15 is a magnetic field diagram of the drive motor of an electric drive assembly according to some embodiments of the present disclosure when the magnetic adjustment element and the stator teeth are misaligned.

[0080] Figure 16 is a schematic diagram of the stator core in the drive motor of an electric drive assembly according to some embodiments of the present disclosure;

[0081] Figure 17 is a schematic diagram of the structure of the magnet adjustment component in the drive motor of an electric drive assembly according to some embodiments of the present disclosure;

[0082] Figure 18 is a schematic diagram of the stator core structure in the drive motor of an electric drive assembly according to some embodiments of the present disclosure;

[0083] Figure 19 is a schematic diagram of the structure of the drive motor of the electric drive assembly according to some embodiments of the present disclosure;

[0084] Figure 20 is a schematic diagram of the stator laminations of the drive motor of an electric drive assembly according to some embodiments of the present disclosure, in which a medium flow path is provided in the stator core.

[0085] Figure 21 is a plan view of stator laminations with a medium flow path provided in the stator core of the drive motor of an electric drive assembly according to some embodiments of the present disclosure.

[0086] Figure 22 is a schematic diagram of the stator core of the drive motor of an electric drive assembly according to some embodiments of the present disclosure engaging with a magnetic component;

[0087] Figure 23 is a cross-sectional view of a generator of an electric drive assembly according to some embodiments of the present disclosure;

[0088] Figure 24 is a plan view of the rotor core of an electric drive assembly according to some embodiments of the present disclosure.

[0089] Figure 25 is a schematic diagram of the structure of the rotor shaft of an electric drive assembly according to some embodiments of the present disclosure;

[0090] Figure 26 is a schematic diagram of the rotor partition of an electric drive assembly according to some embodiments of the present disclosure;

[0091] Figure 27 is a cross-sectional view of a generator of an electric drive assembly according to other embodiments of the present disclosure.

[0092] Reference numerals: Electric drive assembly 1; Generator 11; Drive motor 12; Magnetizing assembly 13, Magnetizing cavity 131, First inlet 131a, Second inlet 131b, Magnetizing element 132, Magnetizing spring 133, Axial stator 134; Stator core 14, Stator yoke 141, Stator teeth 142, Medium flow path 143; First flow path 151, Second flow path 152, Medium cooler 1521, First cooling flow path 153, Second cooling flow path 154; First control valve 161, Second control valve 162, Pressure regulating valve 163, Third control valve 164; First pump 171, Second pump 172; Engine 18, Coupling mechanism 19; Rotor core 201, Rotor flow path 2011, Shaft 202, Shaft flow path 2021, Rotor partition 203, Partition flow path 2031. Detailed Implementation

[0093] Embodiments of this disclosure are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0094] In the description of this disclosure, it should be understood that the terms “center,” “longitudinal,” “lateral,” “vertical,” “width,” “thickness,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

[0096] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0097] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0098] The electric drive assemblies in related technologies still have some shortcomings. Due to the complex and varied operating conditions of motors, they cannot always operate in the high-efficiency range. When motors operate in the low-efficiency range to adapt to external loads, it leads to reduced motor efficiency and increased power consumption.

[0099] The electric drive assembly 1 according to an embodiment of the present disclosure is described below with reference to Figures 1-27.

[0100] As shown in Figures 1-2, the electric drive assembly 1 according to this disclosure includes a generator 11, a magnetic flux adjustment component 13, and a first flow path 151; the magnetic flux adjustment component 13 is used to adjust the magnetic flux of the generator 11; the first flow path 151 is connected to the magnetic flux adjustment component 13, and the amount of medium in the first flow path 151 is adjustable to adjust the position of the magnetic flux adjustment component 13.

[0101] According to the electric drive assembly 1 of this disclosure, the generator 11 is used to generate driving force. By providing a magnetic flux adjustment component 13, the magnetic flux of the generator 11 can be adjusted by changing the position of the magnetic flux adjustment component 13, thereby changing the performance parameters of the generator 11, reducing the energy consumption of the generator 11, and improving the efficiency and performance of the electric drive assembly 1.

[0102] The electric drive assembly 1 also includes a first flow path 151. The medium pressure of the first flow path 151 can act on the magnetic flux adjustment component 13. By adjusting the amount of medium in the first flow path 151, the medium pressure of the first flow path 151 can be adjusted. The magnetic flux adjustment component 13 will become unstable and move under the pressure change, thereby changing the position of the magnetic flux adjustment component 13 to adjust the magnetic flux of the generator 11.

[0103] Therefore, according to the electric drive assembly 1 of this disclosure, by adjusting the amount of medium in the first flow path 151, the position of the magnetic adjustment component 13 can be changed to adjust the magnetic flux of the generator 11, thereby changing the performance parameters of the generator 11, reducing the energy consumption of the generator 11, and improving the efficiency and performance of the electric drive assembly 1.

[0104] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a first control valve 161, which is connected in series with the first flow path 151 to regulate the amount of medium in the first flow path 151. By setting the first control valve 161, the first control valve 161 regulates the amount of medium in the first flow path 151, thereby changing the medium pressure in the first flow path 151. This causes the magnetic flux adjustment component 13 to lose its balance and move due to the pressure change, thereby regulating the magnetic flux of the generator 11.

[0105] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a first cooling flow path 153 and a second flow path 152. The first cooling flow path 153 is used for heat exchange with the heat-generating components of the generator 11. 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 regulate the amount of medium in the first cooling flow path 153. By setting the first cooling flow path, the first cooling flow path 153 exchanges heat with the heat-generating components of the generator 11, thereby regulating the temperature of the generator 11 and ensuring that the generator 11 operates stably at a suitable temperature. By adjusting the amount of medium in the first cooling flow path 153, the heat exchange efficiency between the first cooling flow path 153 and the heat-generating components of the generator 11 can be controlled, enabling the first cooling flow path 153 to absorb the heat generated by the heat-generating components of the generator 11 more efficiently.

[0106] In some specific embodiments, the medium can be an oil that can lubricate and exchange heat. It not only has excellent thermal conductivity, which can effectively absorb and remove the heat generated by the heat-generating components of the generator 11, but its lubrication properties can also reduce the wear of the internal parts of the generator 11 and extend the service life of the generator 11.

[0107] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a medium cooler 1521, which is connected in series in 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, keeping the medium in the first cooling flow path 153 at a low temperature, thereby effectively controlling the temperature of the generator 11.

[0108] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a second control valve 162, which is connected in series in the second flow path 152 to regulate the amount of medium in the first cooling flow path 153. By setting the second control valve 162, the second control valve 162 controls the amount of medium in the second flow path 152, thereby changing the amount of medium in the first cooling flow path 153, thus changing the heat exchange efficiency between the first cooling flow path 153 and the heat-generating components of the generator 11, thereby effectively controlling the temperature of the generator 11. The synergistic effect of the first control valve 161 and the second control valve 162 enables the electric drive assembly 1 to better adapt to various driving conditions, improving the performance and reliability of the vehicle.

[0109] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a first pump 171 connected to a media storage tank, and a first flow path 151 and a second flow path 152 respectively connected to the first pump 171. By providing the first pump 171, the first pump 171 can provide power to the flow path system, causing the media to flow within the system. The media storage tank is used to store the media, and the first pump 171, connected to the media storage tank, can extract the media from the storage tank. The first flow path 151 and the second flow path 152 are respectively connected to the first pump 171, allowing the first pump 171 to drive the media to flow in the first and second flow paths 151 and 152. Driven by the first pump 171, the media can flow into the magnetizing assembly 13 to adjust the magnetic flux of the generator 11; the media can also flow into the first cooling flow path 153 to exchange heat with the heat-generating components of the generator 11, thereby cooling the generator 11. Therefore, the first pump 171 draws media from the media storage pool and delivers it to the magnetizing assembly 13 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 magnetizing and cooling. More specifically, the first pump 171 is mainly used to deliver media to the first flow path 151 to adjust the magnetic flux of the generator 11, while excess media in the first pump 171 is delivered to the second flow path 152 to provide the necessary media for the first cooling flow path 153 to cool the generator 11.

[0110] It should be noted that the first pump 171 can be either an electronic first pump or a mechanical first pump.

[0111] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a pressure regulating valve 163, which is connected in series between the first flow path 151 and the first pump 171 to regulate the medium pressure of the first flow path 151. By providing the pressure regulating valve 163, the pressure regulating valve 163 regulates the medium pressure of the first flow path 151 to meet the pressure requirements of the magnetizing assembly 13 on the first flow path 151 during normal operation.

[0112] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the electric drive assembly 1 further includes a third control valve 164, which is connected to a 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 controls the outlet pressure of the pressure regulating valve 163, so that the pressure of the first flow path 151 is kept within the required range, thereby realizing the normal operation of the magnetic adjustment component 13. Specifically, assuming that the minimum pressure required by the magnetic adjustment component 13 for 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 to be no lower than the set pressure threshold. When the pressure of the first flow path 151 is about to fall below the set pressure threshold, the third control valve 164 will trigger a corresponding adjustment mechanism to increase the medium pressure of the first flow path 151 until the medium pressure reaches or exceeds the set pressure threshold.

[0113] According to some embodiments of this disclosure, as shown in Figures 1 and 2, the first flow path 151 is connected to the second flow path 152 via a 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 medium by the magnetizing assembly 13 varies depending on the operating conditions, when the medium in the first flow path 151 exceeds the current demand of the magnetizing assembly 13, there may be excess medium in the first flow path 151. In this case, 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.

[0114] According to some embodiments of this disclosure, as shown in Figures 1 and 2, 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 entrance through which the first pump 171 draws media from the media storage pool. The media output by the first pump 171 flows through the second control valve 162 to the second flow path 152, thereby controlling the amount of media 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 amount of media required by the generator 11 is less than the amount of media flowing into the second control valve 162, part of the media in the second control valve 162 flows to the second flow path 152, and the excess media flows back to the inlet of the first pump 171 through the outlet of the second control valve 162. This effectively balances and regulates the media flow rate in the flow path system, realizes media recycling, reduces power consumption, and improves media utilization efficiency.

[0115] According to some embodiments of this disclosure, the electric drive assembly 1 is configured to adjust the amount of medium in the second flow path 152 to adjust the amount of medium in the first cooling flow path 153 after controlling the amount of medium in the first flow path 151 to move the magnetizing component 13 to a set position. The electric drive assembly 1 can control the position of the magnetizing component 13 by adjusting the amount of medium in the first flow path 151. The position of the magnetizing component 13 has a significant impact on the magnetic field distribution and overall performance of the generator 11. Therefore, by controlling the position of the magnetizing component 13, the performance of the generator 11 can be optimized and its efficiency improved. After the magnetizing component 13 is moved to the set position, the magnetic flux of the generator 11 is adjusted, the efficiency of the generator 11 is improved, and the heat generation is correspondingly reduced. The electric drive assembly 1 then further adjusts the amount of medium in the second flow path 152. By adjusting the amount of medium in the first cooling flow path 153, the generator 11 is adequately cooled while reducing energy consumption.

[0116] According to some embodiments of this disclosure, as shown in Figures 11 and 12, the magnetic flux adjustment assembly 13 includes a magnetic flux adjustment cavity 131 and a magnetic flux adjustment element 132. The magnetic flux adjustment element 132 is movably disposed within the magnetic flux adjustment cavity 131 to adjust the magnetic flux of the generator 11. By changing the position of the magnetic flux adjustment element 132, the magnetic flux of the generator 11 can be adjusted, thereby changing the performance parameters of the generator 11 and improving the efficiency and performance of the electric drive assembly 1. The first flow path 1711 is connected to the magnetic flux adjustment cavity 131 and generates medium pressure by supplying a medium into the magnetic flux adjustment cavity 131, thereby driving the magnetic flux adjustment element 132 to move.

[0117] According to some embodiments of this disclosure, the magnetic adjustment element 132 is movably disposed on the stator and / or rotor of the generator 11. The magnetic adjustment element 132 can be disposed on the stator or on the rotor. When the magnetic adjustment element 132 is disposed on the stator, by controlling the movement of the magnetic adjustment element 132, the position of the magnetic adjustment element 132 relative to the stator can be changed, thereby changing the magnetic field distribution and achieving adjustment of the magnetic flux. On the other hand, when the magnetic adjustment element 132 is disposed on the rotor, by adjusting the position of the magnetic adjustment element 132, the position of the magnetic adjustment element 132 relative to the rotor can be changed, thereby adjusting the magnetic flux.

[0118] According to some embodiments of this disclosure, the magnetic flux adjusting element 132 is movably disposed on the stator yoke 141 of the generator 11. The amount of dielectric material in the magnetic flux adjusting cavity 131 is adjustable to regulate the magnetic flux passing through the stator teeth 142 of the stator. When current passes through the stator windings, a magnetic field is generated around the stator teeth 142. When the magnetic flux adjusting element 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 flux adjusting element 132, as the radial facing area between the magnetic flux adjusting element 132 and the stator teeth 142 changes, continuous or segmented adjustment of the magnetic flux can be achieved, thereby increasing the range of magnetic flux adjustment and improving the accuracy of magnetic flux adjustment. Specifically, when the area of ​​the magnetic adjustment element 132 facing the stator tooth 142 increases, the magnetic flux path widens, the magnetic resistance decreases accordingly, and the magnetic flux increases; conversely, when the area of ​​the magnetic adjustment element 132 facing the stator tooth 142 decreases, the magnetic flux path narrows, the magnetic resistance increases accordingly, and the magnetic flux decreases.

[0119] According to some embodiments of this disclosure, there are multiple adjusting elements 132, and at least some of the adjusting elements 132 can adjust the magnetic flux through the stator teeth when they move. The adjusting elements 132 can be adjusted in position as a whole, thereby simultaneously adjusting the magnetic flux through multiple stator teeth 112 to achieve uniformity of magnetic field adjustment. A portion of the adjusting elements 132 can also be adjusted in position independently, allowing for local adjustment of the magnetic flux through a specific stator tooth 112.

[0120] According to some embodiments of this disclosure, the magnetic flux adjustment cavity 131 is disposed in the rotor of the generator 11. The amount of medium in the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and the magnetic flux adjustment element 132. By disposing the magnetic flux adjustment cavity 131 in the rotor, it provides space for accommodating and allowing the magnetic flux adjustment element 132 to move, thereby reducing space occupation. By adjusting the amount of medium in the magnetic flux adjustment cavity 131, the medium pressure in the magnetic flux adjustment cavity 131 can be changed, causing the magnetic flux adjustment element 132 to move, thereby changing the relative position of the magnetic flux adjustment element 132 and the rotor, and realizing the adjustment of magnetic flux.

[0121] According to some embodiments of this disclosure, as shown in Figures 23 and 24, the rotor core 201 of the generator 11 is provided with a rotor flow path 2011, which is connected to the magnetic adjustment cavity 131. The medium outside the rotor can be supplied to the rotor through the rotor flow path 2011. For example, after the rotor flow path 2011 receives the medium supplied from the first flow path 151, the medium further enters the magnetic adjustment cavity 131, thereby changing the medium pressure within the magnetic adjustment cavity 131 and adjusting the position of the magnetic adjustment element 132.

[0122] According to some embodiments of this disclosure, as shown in Figures 23-25, the rotor shaft of the generator 11 is provided with a shaft flow path 2021, which is connected to the magnetic adjustment cavity 131 via a rotor flow path 2011. By providing the shaft flow path 2021, the path for conveying the medium to the rotor flow path 2011 is increased. After entering the shaft flow path 2021, the medium further enters the magnetic adjustment cavity 131 via the rotor flow path 2011, thereby adjusting the position of the magnetic adjustment component 132.

[0123] According to some embodiments of this disclosure, the rotor of the generator 11 further includes a baffle flow path 2031 disposed in the rotor baffle 203, which 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 within the magnetic adjustment cavity 131 and adjusting the position of the magnetic adjustment element 132. The rotor baffle 203 is used to limit the axial displacement of the rotor and as a counterweight in the rotor's dynamic balancing experiment. The rotor baffle 203 has a magnetic shielding function, which can reduce magnetic field leakage of the rotor and also help reduce eddy current losses. The rotor baffle 203 is disposed on at least one side of the rotor of the generator 11 along the axial direction to axially limit the rotor, making the connection between the baffle flow path 2031 and the magnetic adjustment flow path less prone to leakage.

[0124] According to some embodiments of this disclosure, as shown in Figures 23-26, the rotor shaft of the generator 11 is provided with a shaft flow path 2021, which is connected to the magnetic adjustment cavity 131 via a partition flow path 2031. By providing the shaft flow path 2021, the path for conveying 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 via the partition flow path 2031, thereby adjusting the position of the magnetic adjustment component 132.

[0125] According to some embodiments of this disclosure, as shown in Figures 12 and 13, the magnetic adjustment assembly 13 further includes a magnetic adjustment spring 133, which is connected to the magnetic adjustment element 132. The elastic force of the magnetic adjustment spring 133 and the medium pressure in the magnetic adjustment cavity 131 cooperate to adjust the position of the magnetic adjustment element 132. By providing the magnetic adjustment spring 133, which is connected to the magnetic adjustment element 132 to apply an elastic force to the magnetic adjustment element 132, the ability to adjust the position of the magnetic adjustment element 132 is enhanced. Specifically, the elastic force of the magnetic adjustment spring 133 interacts with the medium pressure in the magnetic adjustment cavity 131; the position of the magnetic adjustment element 132 is not only affected by the elastic force of the magnetic adjustment spring 133, but also by the change in the medium pressure inside the magnetic adjustment cavity 131, making the position adjustment of the magnetic adjustment element 132 more flexible and precise. For example, assuming the medium pressure in the adjusting cavity 131 is zero, the adjusting element 132 is in the initial position; when the medium pressure increases, the medium pressure will overcome part of the elastic force of the adjusting spring 133, pushing the adjusting element 132 to move towards the elastic element; conversely, when the medium pressure decreases, the elastic force of the adjusting spring 133 will push the adjusting element 132 towards the initial position; when the medium pressure decreases to zero, the adjusting element 132 returns to the initial position.

[0126] According to some embodiments of this disclosure, as shown in FIG12, the magnetizing assembly 13 further includes a housing with a receiving cavity inside, and the magnetizing element 132 and the magnetizing spring 133 connected thereto are disposed in the receiving cavity. The magnetizing element 132 and the magnetizing spring 133 can be pre-installed in the receiving cavity 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 magnetizing element 132 and the magnetizing spring 133 separately.

[0127] According to some embodiments of this disclosure, the magnetic flux adjustment cavity 131 is disposed at at least one end of the rotor's axial direction. The amount of medium in the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and the magnetic flux adjustment element 132. By adjusting the amount of medium in the magnetic flux adjustment cavity 131, the relative position of the rotor and the magnetic flux adjustment element 132 is adjusted, thereby achieving adjustment of the magnetic flux. The magnetic flux adjustment cavity 131 can be disposed at one end of the rotor's axial direction, at the other end of the rotor's axial direction, or simultaneously at both ends of the rotor's axial direction. The magnetic flux adjustment element 132 can move radially, circumferentially, or axially towards or away from the rotor to achieve movement relative to the rotor.

[0128] According to some embodiments of this disclosure, as shown in FIG27, the magnetic adjustment cavity 131 has a first inlet 131a and a second inlet 131b, and the magnetic adjustment element 132 separates the first inlet 131a and the second inlet 131b. A medium is introduced into the magnetic adjustment cavity 131 through the first inlet 131a to push the magnetic adjustment element 132 axially closer to the rotor, and a medium is introduced into the magnetic adjustment cavity 131 through the second inlet 131b to push the magnetic adjustment element 132 axially away from the rotor, thereby achieving effective adjustment of the generator's magnetic field. That is, a medium can be introduced into the magnetic adjustment cavity 131 through either the first inlet 131a or the second inlet 131b to adjust the axial distance between the magnetic adjustment element 132 and the rotor. The different positions of the first inlet 131a and the second inlet 131b result in different positions for the medium introduced into the magnetic adjustment cavity 131 through the first inlet 131a and the second inlet 131b.

[0129] According to some embodiments of this disclosure, the magnetizing assembly 13 further includes an elastic element connected to the magnetizing component 132, used to drive the magnetizing component 132 to move in an axial direction away from the rotor. For example, the magnetizing component 132 may have an elastic element on at least one side of its two sides along the rotor axial direction. The elastic element can drive the magnetizing component 132 to move in an axial direction away from the rotor, thereby causing the magnetizing component 132 to move in a direction away from the rotor 20, thus achieving magnetizing flux adjustment. Therefore, the magnetizing of the generator 11 has a combined action mode of active and passive action. The active magnetizing is hydraulic, and the passive magnetizing relies on the elastic potential energy of the elastic element to achieve magnetizing, making the magnetizing of the generator 11 simple and reliable.

[0130] According to some embodiments of this disclosure, as shown in FIG27, the magnetic flux adjustment element 132 includes an axial stator 134, and the amount of medium in the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and the axial stator 134. By adjusting the amount of medium in the magnetic flux adjustment cavity 131, the axial stator 134 moves under the change of medium pressure. For example, the axial stator 134 moves synchronously towards or away from the rotor along the axial direction, thereby achieving effective adjustment of the magnetic flux.

[0131] In some embodiments of this disclosure, 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.

[0132] According to some embodiments of this disclosure, the magnetic adjustment element 132 can move circumferentially along the generator 11, and / or the magnetic adjustment element 132 can move radially along the generator 11; and / or the magnetic adjustment element 132 can move axially along the generator 11. There are various optional embodiments for the movement of the magnetic adjustment element 132. Specifically, the magnetic adjustment element 132 can move circumferentially along the generator 11, that is, around the rotation axis of the generator 11, moving in a circular direction on a horizontal plane. The magnetic adjustment element 132 can also move radially along the generator 11, that is, starting from the rotation axis of the generator 11, moving inward or outward in a radial direction. The movement of the magnetic adjustment element 132 can also include a combination of circumferential and radial movement, that is, moving both circumferentially and radially on a horizontal plane. In addition, the magnetic adjustment element 132 can also move axially along the generator 11, that is, moving along the rotation axis of the generator 11. Furthermore, the movement of the magnetic adjustment component 132 can be more complex. For example, it can simultaneously perform circumferential and radial composite movements while also moving axially, forming a spiral upward or downward movement path.

[0133] According to some embodiments of this disclosure, as shown in FIG11, the generator 11 includes a stator core 14, which includes a stator yoke 141 and a plurality of stator teeth 142 disposed on the inner ring of the stator yoke 141. A magnetic adjustment cavity 131 is disposed on the stator yoke 141 and adjacent to the stator teeth 142. The stator core 14 carries the stator windings and, together with the rotor, constitutes the magnetic field structure of the generator 11. The inner ring of the stator yoke 141 is connected to the plurality of stator teeth 142 for conducting magnetic flux. When the generator 11 is operating, the magnetic flux flows from the stator yoke 141 through the stator teeth 142 to the rotor. The stator tooth section 142 is the area most prone to saturation in the magnetic circuit of the generator 11. By placing the magnetic adjustment cavity 131 in the stator yoke section 141 and adjacent to the stator tooth section 142, the magnetic adjustment element 132 can effectively adjust the magnetic reluctance of the magnetic circuit near the stator tooth section 142 by moving within the magnetic adjustment cavity 131. This allows more magnetic flux to pass through the stator tooth section 142, achieving a wide range of magnetic flux adjustment for the generator 11, thereby enhancing the performance of the generator 11 and enabling it to adapt to different working conditions and requirements, thus improving the vehicle's driving performance. Furthermore, the placement of the magnetic adjustment cavity 131 in the stator yoke section 141 does not affect the outer diameter of the stator core 14, and therefore does not affect the housing dimensions of the generator 11.

[0134] According to some embodiments of this disclosure, as shown in Figures 12 and 13, the magnetic adjustment assembly 13 further includes a magnetic adjustment spring 133, which is connected to the magnetic adjustment element 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 element 132. By providing the magnetic adjustment spring 133, which is connected to the magnetic adjustment element 132 to apply an elastic force to the magnetic adjustment element 132, the ability to adjust the position of the magnetic adjustment element 132 is enhanced.

[0135] Specifically, the elastic force of the adjusting spring 133 interacts with the medium pressure in the adjusting cavity 131. The position of the adjusting element 132 is affected not only by the elastic force of the adjusting spring 133 but also by changes in the medium pressure within the adjusting cavity 131, making the position adjustment of the adjusting element 132 more flexible and precise. For example, assuming the medium pressure in the adjusting cavity 131 is zero, the adjusting element 132 is in its initial position. When the medium pressure increases, it overcomes part of the elastic force of the adjusting spring 133, pushing the adjusting element 132 towards the elastic force. Conversely, when the medium pressure decreases, the elastic force of the adjusting spring 133 pushes the adjusting element 132 towards its initial position. When the medium pressure decreases to zero, the adjusting element 132 returns to its initial position. It is understood that the above-mentioned medium pressure values ​​are merely illustrative; any adjustment is acceptable as long as the medium pressure interacts with the elastic force to adjust the position of the adjusting element 132.

[0136] According to some embodiments of this disclosure, as shown in Figures 14 and 15, the magnetic flux adjustment assembly 13 includes a first state and a second state. In the first state, the magnetic flux adjustment spring 133 pushes the magnetic flux adjustment element 132 to be directly opposite the stator teeth 142. In the second state, the magnetic flux adjustment cavity 131 is filled with a medium and the magnetic flux adjustment spring 133 is compressed so that the magnetic flux adjustment element 132 is misaligned with the stator teeth 142. The magnetic flux adjustment assembly 13 can switch between the first state and the second state to adjust the magnetic flux of the generator 11. In the first state, the magnetic flux adjustment spring 133 exerts its elastic force to push the magnetic flux adjustment element 132 to the position directly opposite the stator teeth 142. At this time, the gap between the magnetic flux adjustment element 132 and the stator teeth 142 is minimal, the magnetic flux path is at its widest, and the magnetic resistance is relatively low, thereby allowing a larger magnetic field to pass through the magnetic circuit.

[0137] When the magnetic flux of generator 11 needs to be adjusted, the magnetic flux adjustment assembly 13 enters a second state. In the second state, the magnetic flux adjustment cavity 131 is filled with a medium, and the pressure of the medium acts on the magnetic flux adjustment element 132, causing the magnetic flux adjustment spring 133 to be compressed. Due to the pressure of the medium, the magnetic flux adjustment element 132 is misaligned with the stator teeth 142, narrowing the magnetic flux path, increasing the magnetic resistance, and correspondingly reducing the magnetic flux. By adjusting the pressure of the medium, the degree of misalignment between the magnetic flux adjustment element 132 and the stator teeth 142 can be controlled, thereby achieving continuous adjustment of the magnetic flux of generator 11. In the second state, generator 11 can adjust the magnetic flux according to working requirements, achieving more flexible and efficient performance control. The magnetic flux adjustment assembly 13 effectively adjusts the permanent magnet magnetic field, thereby enabling real-time control of the no-load back EMF of generator 11, which helps generator 11 achieve optimal performance in different speed ranges. In the low-speed range, by increasing the no-load back EMF, the torque performance and power in the low-speed range can be increased, making the vehicle more powerful when driving at low speeds. In the high-speed region, reducing the no-load back EMF can decrease core losses, widen the constant power range, and increase peak torque and power, while also helping to prevent inverter damage due to overvoltage. Furthermore, in the second state (i.e., when magnetization is required), the magnetization assembly 13 requires dielectric pressure to drive the magnetization element 132; while in the first state (i.e., when magnetization is not required), no dielectric pressure is needed for the magnetization assembly 13, which helps reduce energy consumption.

[0138] According to some embodiments of this disclosure, as shown in Figures 16-22, the stator core 14 is provided with a plurality of media flow paths 143 extending radially along the stator core 14. Each media flow path 143 is connected to at least one magnetic adjustment cavity 131, and the plurality of media flow paths 143 are connected to a first flow path 151. By providing media flow paths 143 on the stator core 14, the media flow paths 143 allow media to flow within the stator core 14, thereby realizing the delivery of media from the first flow path 151 to the magnetic adjustment cavity 131 and achieving control of the magnetic adjustment assembly 13.

[0139] Specifically, when the magnetic adjustment assembly 13 needs to be adjusted, the medium pressure in the first flow path 151 is adjusted, causing the medium to flow along the medium flow path 143 and enter the corresponding magnetic adjustment cavity 131 through the inlet. The medium entering the magnetic adjustment cavity 131 exerts pressure on the magnetic adjustment element 132, thereby changing the relative position between the magnetic adjustment element 132 and the stator teeth 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 receive a medium supply through the corresponding medium flow path 143. Because multiple medium flow paths 143 are connected to the first flow path 151, the medium pressure in all medium flow paths 143 can be synchronously adjusted by adjusting the medium pressure in the first flow path 151, thereby achieving control of the magnetic adjustment assembly 13. Furthermore, since the medium flow path 143 extends radially along the stator core 14, the medium flow path is optimized, reducing flow resistance and improving the efficiency and response speed of the medium flow.

[0140] According to some embodiments of this disclosure, as shown in Figures 16 and 17, the stator core 14 includes a plurality of stacked stator laminations, some of which are provided with dielectric flow paths 143. The stator core 14 is formed by stacking multiple stator laminations, which helps to enhance the overall strength and structural stability of the stator core 14, while also facilitating manufacturing and assembly, thus improving production efficiency.

[0141] A portion of the stator laminations are provided with a medium flow path 143. These stator laminations are stacked together with those without the medium flow path 143. The stator laminations with the medium flow path 143 provide a channel for the medium to flow, while the stator laminations without the medium flow path 143 provide support and isolation, ensuring stable and reliable flow of the medium within the stator core 14. For example, the stator laminations can be divided into several groups along the axial direction of the stator core 14. Each group includes one stator lamination with the medium flow path 143 and one stator lamination without the medium flow path 143. This arrangement allows one stator lamination with the medium flow path 143 to be sandwiched between two stator laminations without the medium flow path 143, effectively guiding and isolating the medium flow within the medium flow path 143, maintaining stable medium pressure in the medium flow path 143, and enabling precise adjustment of the magnetic adjustment assembly 13. In specific embodiments, the grouping method can be adjusted according to the specific needs and design parameters of the generator 11. The number of stator laminations in each group can be increased as needed to adapt to different medium flow requirements and the overall structural requirements of the stator core 14.

[0142] According to some embodiments of this disclosure, there are multiple generators 11. The magnetizing component 13 of each generator 11 is connected to a first flow path 151, and the first cooling flow path 153 of each generator 11 is connected to a second flow path 152. By setting multiple generators 11, a front-wheel drive and rear-wheel drive power configuration of the vehicle is realized, thereby improving the vehicle's handling performance and power output. The magnetizing component 13 of each generator 11 is connected to a corresponding first flow path 151. By adjusting the pressure of the first flow path 151, the magnetic flux of the generator 11 is adjusted, so that each generator 11 can independently adjust its magnetic field characteristics, thereby optimizing the performance of the generator 11. At the same time, the first cooling flow path 153 of each generator 11 is also connected to a corresponding second flow path 152, so that each generator 11 can be effectively cooled during operation. By adjusting the flow rate of the second flow path 152, the generator 11 can maintain a suitable operating temperature under different workloads, thereby extending the service life of the generator 11 and improving its reliability.

[0143] The following is a brief description of a vehicle having the electric drive assembly 1 described above, according to this disclosure.

[0144] The vehicle according to this disclosure includes the electric drive assembly 1 in any of the above embodiments. Since the vehicle according to this disclosure includes the electric drive assembly 1 in any of the above embodiments, the vehicle according to this disclosure can effectively adjust the performance parameters of the generator 11 and control the operating temperature, keeping the generator 11 in good condition, thereby significantly improving the efficiency and performance of the vehicle.

[0145] According to the vehicle control method disclosed herein, as shown in FIG3, the vehicle includes the electric drive assembly 1 in any of the above embodiments. The control method includes: collecting the torque and speed values ​​of the generator 11, and determining whether the vehicle needs magnetic adjustment based on the collection results; when it is determined that the vehicle needs magnetic adjustment, the electric drive assembly changes the position of the magnetic adjustment component 13 by adjusting the amount of medium in the first flow path 151.

[0146] The control method determines whether magnetic flux adjustment is needed based on the operating status of generator 11, and performs corresponding control when necessary. By collecting the torque and speed values ​​of generator 11, the operating status and performance of generator 11 can be determined. Based on the collected torque and speed values, the vehicle system performs a series of calculations and comparisons based on a preset algorithm or model to determine whether the current operating status of generator 11 requires magnetic flux adjustment. If the vehicle system determines that magnetic flux adjustment is needed, the amount of medium in the first flow path 151 will be adjusted through the electric drive assembly. Changes in the amount of medium in the first flow path 151 directly affect the pressure on the magnetic flux adjustment component 13, thereby changing the position of the magnetic flux adjustment component 13. By adjusting the position of the magnetic flux adjustment component 13, the magnetic flux of generator 11 can be controlled, thereby optimizing the performance of generator 11, such as improving efficiency, reducing energy consumption, or increasing power output.

[0147] According to some embodiments of this disclosure, the electric drive assembly 1 includes a first cooling flow path 153 for heat exchange with the heat-generating components of the generator 11. When the electric drive assembly 1 changes the position of the magnetizing component 13 by adjusting the amount of medium in the first flow path 151, the control method further includes adjusting the amount of medium in the first cooling flow path 153. When the vehicle needs to perform a magnetizing operation, the electric drive assembly first changes the position of the magnetizing component 13 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 magnetizing operation, the heat generation of the generator 11 changes accordingly, so the amount of medium in the first cooling flow path 153 can be adjusted according to the change in heat generation. For example, if the efficiency of the generator 11 increases and the heat generation decreases after the magnetizing operation, the amount of medium in the first cooling flow path 153 can be appropriately reduced.

[0148] According to some embodiments of this disclosure, after the position of the magnetizing component 13 is changed, the amount of medium in the first cooling flow path 153 can be reduced after a set time. Alternatively, after the position of the magnetizing component 13 is changed, the input torque of the generator 11 is detected, and if a decrease in the input current of the generator 11 is detected, the amount of medium in the first cooling flow path 153 is reduced.

[0149] According to some embodiments of this disclosure, as shown in Figure 4, the vehicle controller collects the torque and speed values ​​of the generator 11 under the current operating condition. Based on the torque and speed values, the vehicle controller uses an embedded function to determine whether the current operating condition is close to the area requiring magnetic adjustment control. When the operating condition is close to the magnetic adjustment area, the third control valve 164 starts working, so that the medium pressure of the first flow path 151 reaches near the pressure required to control the movement of the magnetic adjustment component 13. When the operating condition enters the magnetic adjustment area, the first control valve 161 quickly adjusts the medium flow, controls the movement of the magnetic adjustment component 13, adjusts the generator magnetic field in real time, and optimizes the generator efficiency. The position signal of the magnetic adjustment component 13 is fed back to the first control valve 161 to achieve precise control. After the generator efficiency is improved, the cooling demand decreases, and the flow rate 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. The control algorithm controls the opening of the second control valve 162 and adjusts the total flow rate of the second flow path 152 based on the flow rate signal of the second flow path 152 and the pressure signal of the first control valve 161.

[0150] The following is a brief description of a vehicle that applies the control method described above according to this disclosure.

[0151] The vehicle according to this disclosure includes an execution module that performs the control method in any of the above embodiments. Since the vehicle according to this disclosure includes an execution module that performs the control method in any of the above embodiments, the vehicle according to this disclosure can perform magnetic field adjustment operations based on the real-time operating state of the generator 11, optimizing generator performance and making the vehicle's operation more efficient and stable.

[0152] The electric drive assemblies in related technologies have some shortcomings. How to accurately and efficiently achieve magnetic flux regulation to ensure the maximization of generator performance under different operating conditions remains a problem that needs to be solved.

[0153] The electric drive assembly according to an embodiment of the present disclosure is described below with reference to Figures 5-27.

[0154] As shown in Figures 5 and 6, the electric drive assembly 1 according to this disclosure includes a generator 11, a drive motor 12, a magnetic flux adjustment component 13, and a first flow path 151. The drive motor 12 is driveably connected to the generator 11. The magnetic flux 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 flux adjustment component 13, and the amount of medium in the first flow path 151 is adjustable to adjust the position of the magnetic flux adjustment component 13.

[0155] According to the electric drive assembly 1 of this disclosure, the magnetic flux 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 the magnetic flux adjustment component 13. If only the generator 11 is provided with the magnetic flux adjustment component 13, the magnetic flux 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 the magnetic flux adjustment component 13, the magnetic flux 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 the magnetic flux adjustment component 13, the magnetic flux adjustment components 13 of the generator 11 and the drive motor 12 will function separately to jointly optimize the performance of the electric drive assembly 1, improve generator efficiency, and reduce generator energy consumption.

[0156] By setting up a first flow path 151, the medium pressure in the first flow path 151 can act on the magnetic flux adjustment component 13, allowing the position of the magnetic flux adjustment component 13 to be adjusted as needed, thereby adjusting 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 amount of medium in the first flow path 151 (increasing or decreasing the amount of medium). As the medium pressure changes, the magnetic flux adjustment component 13 will lose stability due to the change in force, thus moving its position.

[0157] Therefore, according to the electric drive assembly 1 of this disclosure, 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 generator, thereby changing the performance parameters of the generator, reducing the energy consumption of the generator, and improving the efficiency and performance of the electric drive assembly 1.

[0158] According to some embodiments of this disclosure, as shown in Figures 5 and 6, both the generator 11 and the drive motor 12 are equipped with magnetic flux adjustment components 13. In the electric drive assembly 1, both the generator 11 and the drive motor 12 are equipped with magnetic flux adjustment components 13, allowing the generator 11 and the drive motor 12 to independently adjust their magnetic flux, thereby achieving adjustment of their respective performance parameters. Specifically, the magnetic flux 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 status of the battery system, optimizing power generation efficiency and achieving efficient energy recovery; the magnetic flux 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 vehicle's driving status to provide optimal power output. By providing magnetic flux adjustment components 13 on both the generator 11 and the drive motor 12, 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.

[0159] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further includes a first control valve 161. The first control valve 161 is connected to a first flow path 151 to adjust the amount of medium in the first flow path 151 to adjust the position of the magnetizing assembly 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 magnetizing assembly 13 and achieving precise control of the position of the magnetizing assembly 13.

[0160] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further 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 operating, the heat generated by their heating elements can be effectively absorbed and carried away by the medium in the first cooling flow path 153, ensuring that both the generator 11 and the drive motor 12 operate stably at a suitable temperature. By providing the second flow path 152, the second flow path 152 can supply a medium to the first cooling flow path 153, meeting the cooling requirements of the first cooling flow path 153 for its heating elements.

[0161] In some specific embodiments, the medium can be a pressure medium capable of lubrication and heat exchange. It not only has excellent thermal conductivity, which can effectively absorb and remove the heat generated by the heat-generating components of the generator 11 and drive motor 12, but its lubrication performance can also reduce the wear of internal parts of the generator 11 and drive motor 12, and extend the service life of the generator 11 and drive motor 12.

[0162] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further includes a second control valve 162 connected to a second flow path 152 to regulate the amount of medium in the first cooling flow path 153. By setting the second control valve 162 to regulate the amount of medium in the second flow path 152, the amount of medium delivered from the second flow path 152 to the first cooling flow path 153 can be increased or decreased, thereby adjusting 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 cause more medium to flow through the second flow path 152 to the first cooling flow path 153, thereby enhancing the cooling effect. Conversely, when the workload of the generator 11 and the drive motor 12 decreases and less heat is generated, the second control valve 162 will reduce the flow rate of medium from the second flow path 152 to the first cooling flow path 153, thereby achieving an energy-saving effect.

[0163] According to some embodiments of this disclosure, as shown in Figures 5 and 6, 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, keeping the medium in the first cooling flow path 153 at a low temperature, thereby effectively controlling the temperature of the generator 11 and the drive motor 12.

[0164] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further includes a first pump 171 connected to a media storage pool. The first pump 171 is connected to a first flow path 151 and a second flow path 152, respectively. By providing the first pump 171, the first pump 171 can provide power to the flow path system, causing the media to flow in the flow path system. The media storage pool is used to store the media, and the first pump 171 can draw media from the media storage pool by being connected to the media 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 media to flow in the first flow path 151 and the second flow path 152. Driven by the first pump 171, the media can flow into the first flow path 151 to change the position of the magnetic adjustment component 13, thereby adjusting the magnetic flux of the generator 11 and the drive motor 12; the media can also flow into the first cooling flow path 153 to exchange heat with the heating elements to reduce the temperature. The heating elements include, but are 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 draws media from the media storage pool and delivers it to the first flow path 151 and the first cooling flow path 153 respectively through the first flow path 151 and the second flow path 152 to complete the functions of magnetic adjustment and cooling. More specifically, the first pump 171 is mainly used to deliver media to the first flow path 151 to adjust the magnetic flux of the generator 11 and the drive motor 12, while excess media in the first pump 171 is delivered to the second flow path 152 to provide the necessary media for the first cooling flow path 153 to cool the heating elements.

[0165] It should be noted that the first pump 171 can be either an electronic pump or a mechanical pump.

[0166] According to some embodiments of this disclosure, as shown in Figures 5 and 6, 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 regulate the medium pressure of the first flow path 151. By providing the pressure regulating valve 163, the pressure regulating valve 163 regulates the medium pressure of the first flow path 151 to meet the medium pressure requirements of the magnetizing assembly 13 during normal operation.

[0167] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 has a third control valve 164 connected to a pressure regulating valve 163 to control the outlet pressure of the pressure regulating valve 163. By setting the third control valve 164 to control the outlet pressure of the pressure regulating valve 163, the pressure regulating valve 163 maintains the medium pressure in the first flow path 151 within a required range, thus achieving normal operation of the magnetic adjustment component 13. Specifically, assuming the minimum pressure required by the magnetic adjustment component 13 for the medium pressure in 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 to be no lower than the set pressure threshold. When the medium pressure in the first flow path 151 is about to fall below the set pressure threshold, the third control valve 164 will trigger a corresponding adjustment mechanism to increase the medium pressure in the first flow path 151 until the pressure reaches or exceeds the set pressure threshold.

[0168] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the first flow path 151 is connected to the second flow path 152 via a 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 medium by the magnetizing assembly 13 varies depending on the operating conditions, when the medium in the first flow path 151 exceeds the current demand of the magnetizing assembly 13, there may be excess medium in the first flow path 151. In this case, 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.

[0169] According to some embodiments of this disclosure, as shown in Figures 5 and 6, 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 entrance for the first pump 171 to draw media from the media storage pool. The media output by the first pump 171 flows through the second control valve 162 to the second flow path 152, thereby controlling the amount of media 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 amount of media required by the first cooling flow path 153 is less than the amount of media flowing into the second control valve 162, part of the media in the second control valve 162 flows to the second flow path 152, and the excess media flows back to the inlet of the first pump 171 through the outlet of the second control valve 162. This effectively balances the media flow rate in the flow path system, realizes media recycling, reduces power consumption, and improves media utilization efficiency.

[0170] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further includes an engine 18 and a coupling mechanism 19. The engine 18 is connected to the coupling mechanism 19, which has a first state and a second state. In the first state, the engine 18 is connected to the axle via 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 configuring the engine 18, its power output can be controlled by the coupling mechanism 19 to connect or disconnect it from the axle, allowing the electric drive assembly 1 to flexibly adjust its power output according to driving conditions and needs, thereby optimizing energy utilization and driving experience. The coupling mechanism 19 is used to realize the transmission connection between the engine 18 and the axle and has two operating modes: a first state and a second state.

[0171] In the first state, engine 18 is connected to the axle drive via coupling mechanism 19, and the power of engine 18 can be directly transmitted to the axle to drive the vehicle. In the second state, engine 18 is decoupled from the axle, the power transmission between engine 18 and axle is disconnected, and engine 18 no longer directly drives the vehicle, which can save fuel and reduce emissions.

[0172] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 includes a second cooling flow path 154, which is connected to a coupling mechanism 19, and a second flow path 152 is connected to the second cooling flow path 154. By providing the second cooling flow path 154 for cooling the engine 18, the medium in the second cooling flow path 154 can effectively absorb and dissipate the heat generated by the engine 18 during operation, keeping the engine 18 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 adjustment of the flow rate and pressure of the medium in the second cooling flow path 154 according to the real-time operating status and temperature requirements of the engine 18, thereby ensuring that the engine 18 receives appropriate cooling under various operating conditions.

[0173] Specifically, when the engine 18 is operating under high load or at 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 its optimal operating temperature range.

[0174] According to some embodiments of this disclosure, the coupling mechanism 19 is selectively connected to the first flow path 151 to switch between a first state and a second state. When the coupling mechanism 19 needs to be connected to the engine 18, i.e., when it enters 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 achieves the transmission connection with the engine 18, and the power of the engine 18 can be transmitted to the axle, thereby driving the vehicle.

[0175] When it is necessary to disconnect the transmission connection between the engine 18 and the axle, i.e., entering the second state, the coupling mechanism 19 and the first flow path 151 are interrupted. The first flow path 151 stops providing pressure to the coupling mechanism 19, allowing the transmission mechanism in the coupling mechanism 19 to be smoothly decoupled, thereby disconnecting the power transmission between the engine 18 and the axle. By selectively connecting the coupling mechanism 19 and the first flow path 151, the vehicle can flexibly adjust the power output mode under different driving conditions and needs 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 to save fuel and reduce emissions, the connection between the engine 18 and the axle can be disconnected, and the vehicle can be driven by the drive motor 12. At this time, the engine 18 can cooperate with the generator 11 to supply power to the drive motor 12.

[0176] According to some embodiments of this disclosure, as shown in Figures 5 and 6, the electric drive assembly 1 further includes a second pump 172 connected to a media storage pool and a second flow path 152. By providing the second pump 172, the second pump 172 can draw media from the media storage pool and supply media to the second flow path 152. When the engine 18 is operating, the second pump 172 can independently draw media from the media storage pool and supply media to the engine 18 for cooling and lubrication through the second flow path 152, achieving normal operation and efficient cooling of the engine 18. Furthermore, the operating state of the second pump 172 can be adjusted in real time according to the operating conditions of the engine 18. By controlling the second pump 172, the supply quantity and supply pressure of the media can be precisely adjusted to adapt to the cooling and lubrication needs of the engine 18 under different operating conditions. Furthermore, 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 by the drive of the second pump 172 to supplement the medium required by the first cooling flow path 153, so that the heat-generating element can be adequately cooled and the normal operation of the electric drive assembly 1 can be maintained.

[0177] According to some embodiments of this disclosure, the electric drive assembly 1 is configured such that after the first control valve 161 is opened to control the amount of medium in the first flow path 151, a second control valve 162 is controlled to reduce the amount of medium in the second flow path 152. The opening of the first control valve 161 controls the amount of medium in the first flow path 151, thereby controlling the position of the magnetizing assembly 13. The position of the magnetizing assembly 13 has a significant impact on the magnetic field distribution and overall performance of the generator. Therefore, by controlling the position of the magnetizing assembly 13, the performance of the generator can be optimized and efficiency improved. With increased generator efficiency, heat generation is correspondingly reduced. By controlling the second control valve 162 to reduce the amount of medium in the second flow path 152, the amount of medium delivered from the second flow path 152 to the first cooling flow path 153 can be reduced, allowing the generator to be adequately cooled while reducing energy consumption.

[0178] According to some embodiments of this disclosure, as shown in Figures 11 and 12, the magnetic flux adjustment assembly 13 includes a magnetic flux adjustment cavity 131 and a magnetic flux adjustment element 132. The magnetic flux adjustment element 132 is movably disposed within the magnetic flux 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 flux adjustment element 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 flux adjustment cavity 131 and generates medium pressure by supplying a medium into the magnetic flux adjustment cavity 131, thereby driving the magnetic flux adjustment element 132 to move.

[0179] According to some embodiments of this disclosure, the magnetic adjustment element 132 is movably disposed on the stator and / or rotor of the generator 11 and / or drive motor 12. The magnetic adjustment element 132 can be disposed on the stator or on the rotor. When the magnetic adjustment element 132 is disposed on the stator, by controlling the movement of the magnetic adjustment element 132, the position of the magnetic adjustment element 132 relative to the stator can be changed, thereby changing the magnetic field distribution and achieving adjustment of the magnetic flux. On the other hand, when the magnetic adjustment element 132 is disposed on the rotor, by adjusting the position of the magnetic adjustment element 132, the position of the magnetic adjustment element 132 relative to the rotor can be changed, thereby adjusting the magnetic flux.

[0180] According to some embodiments of this disclosure, the magnetic flux adjusting element 132 is movably disposed on the stator yoke 141 of the stator of the generator 11 and / or drive motor 12. The amount of dielectric material in the magnetic flux adjusting cavity 131 is adjustable to regulate the magnetic flux passing through the stator teeth 142 of the stator. When current passes through the stator windings, a magnetic field is generated around the stator teeth 142. When the magnetic flux adjusting element 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 flux adjusting element 132, as the radial facing area between the magnetic flux adjusting element 132 and the stator teeth 142 changes, continuous or segmented adjustment of the magnetic flux can be achieved, thereby increasing the range of magnetic flux adjustment and improving the accuracy of magnetic flux adjustment. Specifically, when the area of ​​the magnetic adjustment element 132 facing the stator tooth 142 increases, the magnetic flux path widens, the magnetic resistance decreases accordingly, and the magnetic flux increases; conversely, when the area of ​​the magnetic adjustment element 132 facing the stator tooth 142 decreases, the magnetic flux path narrows, the magnetic resistance increases accordingly, and the magnetic flux decreases.

[0181] According to some embodiments of this disclosure, there are multiple adjusting elements 132, and at least some of the adjusting elements 132 can adjust the magnetic flux through the stator teeth 142 when they move. The adjusting elements 132 can be adjusted in position as a whole, thereby simultaneously adjusting the magnetic flux through multiple stator teeth 142 to achieve uniform magnetic field adjustment. A portion of the adjusting elements 132 can also be adjusted in position independently, allowing for localized adjustment of the magnetic flux through a specific stator tooth 142.

[0182] According to some embodiments of this disclosure, the magnetic flux adjustment cavity 131 is disposed in the rotor of the generator 11 and / or drive motor 12. The amount of medium in the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or drive motor 12 and the magnetic flux adjustment element 132. By disposing the magnetic flux adjustment cavity 131 in the rotor, the magnetic flux adjustment cavity 131 provides space for accommodating and allowing the magnetic flux adjustment element 132 to move, thereby reducing the space occupied. By adjusting the amount of medium in the magnetic flux adjustment cavity 131, the medium pressure in the magnetic flux adjustment cavity 131 can be changed, causing the magnetic flux adjustment element 132 to move, thereby changing the relative position of the magnetic flux adjustment element 132 and the rotor, and realizing the adjustment of magnetic flux.

[0183] According to some embodiments of this disclosure, as shown in Figures 23 and 24, the rotor core 201 of the rotor of the generator 11 and / or drive motor 12 is provided with a rotor flow path 2011, which is connected to the magnetic adjustment cavity 131. The medium outside the rotor can be supplied to the rotor through the rotor flow path 2011. For example, after the rotor flow path 2011 receives the medium supplied from the first flow path 151, the medium further enters the magnetic adjustment cavity 131, thereby changing the medium pressure within the magnetic adjustment cavity 131 and adjusting the position of the magnetic adjustment element 132.

[0184] According to some embodiments of this disclosure, as shown in Figures 23-25, the rotor shaft 202 of the generator 11 and / or drive motor 12 is provided with a shaft flow path 2021, which is connected to the magnetic adjustment cavity 131 via a rotor flow path 2011. By providing the shaft flow path 2021, the path for conveying 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 via the rotor flow path 2011, thereby adjusting the position of the magnetic adjustment element 132.

[0185] According to some embodiments of this disclosure, as shown in FIG26, the rotor of the generator 11 and / or drive motor 12 further includes a partition flow path 2031 disposed in the rotor partition 203, which is connected to the magnetic adjustment cavity 131. The medium in the partition flow path 2031 can enter the magnetic adjustment cavity 131, thereby changing the medium pressure within the magnetic adjustment cavity 131 and adjusting the position of the magnetic adjustment element 132. The rotor partition 203 is used to limit the axial displacement of the rotor and as a counterweight in the rotor's dynamic balancing experiment. The rotor partition 203 has a magnetic shielding function, which can reduce magnetic field leakage of the rotor and also help reduce eddy current losses. The rotor partition 203 is disposed on at least one side of the rotor of the generator 11 and / or drive motor 12 to axially limit the rotor, making the connection between the partition flow path 2031 and the magnetic adjustment flow path less prone to leakage.

[0186] According to some embodiments of this disclosure, as shown in Figures 23-26, the rotor shaft 202 of the generator 11 and / or drive motor 12 is provided with a shaft flow path 2021, which is connected to the magnetic adjustment cavity 131 via a partition flow path 2031. By providing the shaft flow path 2021, the conveying path for the medium to be conveyed 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 via the partition flow path 2031, thereby adjusting the position of the magnetic adjustment component 132.

[0187] According to some embodiments of this disclosure, as shown in Figures 13 and 14, the magnetic adjustment assembly 13 further includes a magnetic adjustment spring 133, which is connected to the magnetic adjustment element 132. The elastic force of the magnetic adjustment spring 133 and the medium pressure in the magnetic adjustment cavity 131 cooperate to adjust the position of the magnetic adjustment element 132. By providing the magnetic adjustment spring 133, which is connected to the magnetic adjustment element 132 to apply an elastic force to the magnetic adjustment element 132, the ability to adjust the position of the magnetic adjustment element 132 is enhanced. Specifically, the elastic force of the magnetic adjustment spring 133 interacts with the medium pressure in the magnetic adjustment cavity 131; the position of the magnetic adjustment element 132 is not only affected by the elastic force of the magnetic adjustment spring 133, but also by the change in the medium pressure inside the magnetic adjustment cavity 131, making the position adjustment of the magnetic adjustment element 132 more flexible and precise. For example, assuming the medium pressure in the adjusting cavity 131 is zero, the adjusting element 132 is in the initial position; when the medium pressure increases, the medium pressure will overcome part of the elastic force of the adjusting spring 133, pushing the adjusting element 132 to move towards the elastic element; conversely, when the medium pressure decreases, the elastic force of the adjusting spring 133 will push the adjusting element 132 towards the initial position; when the medium pressure decreases to zero, the adjusting element 132 returns to the initial position.

[0188] According to some embodiments of this disclosure, as shown in FIG12, the magnetizing assembly 13 further includes a housing with a receiving cavity inside, and the magnetizing element 132 and the magnetizing spring 133 connected thereto are disposed in the receiving cavity. The magnetizing element 132 and the magnetizing spring 133 can be pre-installed in the receiving cavity 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 magnetizing element 132 and the magnetizing spring 133 separately.

[0189] According to some embodiments of this disclosure, a magnetic flux adjustment cavity 131 is disposed at at least one end of the rotor's axial direction. The amount of medium within the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or drive motor 12 with the magnetic flux adjustment element 132. By adjusting the amount of medium within the magnetic flux adjustment cavity 131, the relative position of the rotor and the magnetic flux adjustment element 132 is adjusted, thereby achieving adjustment of the magnetic flux. The magnetic flux adjustment cavity 131 can be disposed at one end of the rotor's axial direction, at the other end of the rotor's axial direction, or simultaneously at both ends of the rotor's axial direction. The magnetic flux adjustment element 132 can move radially, circumferentially, or axially towards or away from the rotor to achieve movement relative to the rotor.

[0190] According to some embodiments of this disclosure, as shown in FIG27, the magnetic adjustment cavity 131 has a first inlet 131a and a second inlet 131b. The magnetic adjustment element 132 separates the first inlet 131a and the second inlet 131b. A medium is introduced into the magnetic adjustment cavity 131 through the first inlet 131a to push the magnetic adjustment element 132 axially closer to the rotor, and a medium is introduced into the magnetic adjustment cavity 131 through the second inlet 131b to push the magnetic adjustment element 132 axially away from the rotor, thereby achieving effective adjustment of the generator's magnetic field. That is, a medium can be introduced into the magnetic adjustment cavity 131 through either the first inlet 131a or the second inlet 131b to adjust the axial distance between the magnetic adjustment element 132 and the rotor. The different positions of the first inlet 131a and the second inlet 131b result in different positions for the medium introduced into the magnetic adjustment cavity 131 through the first inlet 131a and the second inlet 131b.

[0191] According to some embodiments of this disclosure, the magnetizing assembly 13 further includes an elastic element connected to the magnetizing component 132, used to drive the magnetizing component 132 to move in an axial direction away from the rotor. For example, at least one side of the magnetizing component 132 along the rotor axial direction is provided with an elastic element, which can drive the magnetizing component 132 to move in an axial direction away from the rotor, thereby moving the magnetizing component 132 in a direction away from the rotor to achieve magnetizing flux adjustment. Thus, the magnetizing of the generator has a combined action mode of active and passive action. The active magnetizing is hydraulic magnetizing, and the passive magnetizing is achieved by relying on the elastic potential energy of the elastic element, making the magnetizing of the generator simple and reliable.

[0192] According to some embodiments of this disclosure, as shown in FIG27, the magnetic flux adjustment element 132 includes an axial stator 134, and the amount of medium in the magnetic flux adjustment cavity 131 is adjustable to adjust the relative position of the rotor of the generator 11 and / or drive motor 12 with respect to the axial stator 134. By adjusting the amount of medium in the magnetic flux adjustment cavity 131, the axial stator 134 moves under changes in medium pressure. For example, the axial stator 134 synchronously moves closer to or farther from the rotor along the axial direction, thereby achieving effective adjustment of the magnetic flux.

[0193] In some embodiments of this disclosure, 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.

[0194] According to some embodiments of this disclosure, the magnetic adjustment element 132 disposed on the generator 11 can move axially and / or the magnetic adjustment element 132 disposed on the drive motor 12 can move axially; and / or the magnetic adjustment element 132 disposed on the generator 11 can move circumferentially and / or the magnetic adjustment element 132 disposed on the drive motor 12 can move circumferentially; and / or the magnetic adjustment element 132 disposed on the generator 11 can move radially and / or the magnetic adjustment element 132 disposed on the drive motor 12 can move radially. There are various optional embodiments for the movement of the magnetic adjustment element 132. Specifically, the magnetic adjustment element 132 can move circumferentially around the rotation axis of the generator 11 or the drive motor 12, that is, it can move circumferentially on a horizontal plane. The magnetic adjustment element 132 can also move radially around the generator 11 or the drive motor 12, that is, it can move inward or outward in a radial direction from the rotation axis of the generator 11 or the drive motor 12. The movement of the magnetic adjustment component 132 can also include a combination of circumferential and radial movement, that is, it can move both circumferentially and radially on the horizontal plane. In addition, the magnetic adjustment component 132 can also move along the axial direction of the generator 11 or drive motor 12, that is, it can move along the rotation axis of the generator 11 or drive motor 12. Furthermore, the movement of the magnetic adjustment component 132 can be more complex; for example, it can simultaneously perform circumferential and radial movement while also moving axially, forming a spiral upward or downward movement path.

[0195] According to some embodiments of this disclosure, as shown in FIG11, both the drive motor 12 and the generator 11 include a stator core 14. The stator core 14 includes a stator yoke 141 and a plurality of stator teeth 142 disposed on the inner ring of the stator yoke 141. A magnetic adjustment cavity 131 is disposed on the stator yoke 141 and adjacent to the stator teeth 142. The stator core 14 is used to carry the stator winding and together with the rotor forms the magnetic field structure of the drive motor 12. The inner ring of the stator yoke 141 is connected to the plurality of stator teeth 142 for conducting magnetic flux. When the drive motor 12 and the generator 11 are working, the magnetic flux flows from the stator yoke 141 through the stator teeth 142 and to the rotor. The stator tooth section 142 is the area most prone to saturation in the magnetic circuits of the drive motor 12 and the generator 11. By placing the magnetic adjustment cavity 131 in the stator yoke section 141 and adjacent to the stator tooth section 142, the magnetic adjustment element 132 can effectively adjust the magnetic reluctance of the magnetic circuit near the stator tooth section 142 by moving within the magnetic adjustment cavity 131. This allows more magnetic flux to pass through the stator tooth section 142, achieving a wide range of magnetic flux adjustment for the drive motor 12 or generator 11, thereby enhancing the performance of the drive motor 12 or generator 11 and enabling it to adapt to different working conditions and requirements, thus improving the vehicle's driving performance. Furthermore, the placement of the magnetic adjustment cavity 131 in the stator yoke section 141 does not affect the outer diameter of the stator core 14, and therefore does not affect the housing dimensions of the drive motor 12.

[0196] According to some embodiments of this disclosure, as shown in Figures 14-15, the magnetic adjustment assembly 13 includes a first state and a second state. In the first state, the magnetic adjustment spring 133 pushes the magnetic adjustment element 132 to be directly opposite the stator teeth 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 element 132 and the stator teeth 142 are misaligned. The magnetic adjustment assembly 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 its elastic force to push the magnetic adjustment element 132 to the position directly opposite the stator teeth 142. At this time, the gap between the magnetic adjustment element 132 and the stator teeth 142 is minimal, the magnetic flux path is at its widest, and the magnetic resistance is relatively low, thereby allowing a larger magnetic field to pass through the magnetic circuit. When it is necessary to adjust the magnetic flux of the drive motor 12, the magnetic adjustment assembly 13 enters the second state.

[0197] 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, compressing the magnetic adjustment spring 133. Due to the medium pressure, the magnetic adjustment component 132 is misaligned with the stator teeth 142, narrowing the magnetic flux path, increasing magnetic reluctance, and correspondingly reducing the magnetic flux. By adjusting the pressure of the medium, the degree of misalignment between the magnetic adjustment component 132 and the stator teeth 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, achieving more flexible and efficient performance control. The magnetic adjustment component 13 effectively adjusts the permanent magnet magnetic field, thereby enabling real-time control of the no-load back EMF of the drive motor 12, which helps the drive motor 12 achieve optimal performance in different speed ranges.

[0198] In the low-speed range, increasing the no-load back EMF enhances torque and power performance, making the vehicle more powerful at low speeds. In the high-speed range, reducing the no-load back EMF reduces core losses, widens the constant power range, and increases peak torque and power, while also helping to prevent inverter damage due to overvoltage. Furthermore, in the second state (when magnetization is required), the magnetization adjustment component 13 requires dielectric pressure to drive the magnetization adjustment element 132; while in the first state (when magnetization is not required), no dielectric is needed for the magnetization adjustment component 13, which helps reduce energy consumption.

[0199] According to some embodiments of this disclosure, as shown in Figures 16-19, the stator core 14 is provided with a plurality of media flow paths 143 extending radially along the stator core 14. Each media flow path 143 is connected to at least one magnetic adjustment cavity 131, and the plurality of media flow paths 143 are connected to a first flow path 151. By providing media flow paths 143 on the stator core 14, the media flow paths 143 allow media pressure to flow within the stator core 14, thereby delivering the media pressure of the first flow path 151 to the magnetic adjustment cavity 131 and realizing the control of the magnetic adjustment assembly 13. Specifically, when it is necessary to adjust the magnetic adjustment assembly 13, by adjusting the amount of media in the first flow path 151, the media pressure will flow along the media flow path 143 and enter the corresponding magnetic adjustment cavity 131 through the inlet of the magnetic adjustment cavity 131. The media pressure entering the magnetic adjustment cavity 131 will exert pressure on the magnetic adjustment element 132, thereby changing the relative position between the magnetic adjustment element 132 and the stator teeth 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 receive medium pressure through the corresponding medium flow path 143. Furthermore, 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 intermediate mass of all medium flow paths 143 can be synchronously adjusted, thereby achieving control of the magnetic adjustment assembly 13. In addition, since the medium flow paths 143 extend radially along the stator core 14, the path of medium pressure flow is optimized, reducing flow resistance and improving the efficiency and response speed of medium pressure flow.

[0200] According to some embodiments of this disclosure, as shown in Figures 18-22, the stator core 14 includes a plurality of stacked stator laminations, some of which are provided with a medium flow path 143. The stator core 14 is formed by stacking multiple stator laminations, which helps to enhance the overall strength and structural stability of the stator core 14, while also facilitating manufacturing and assembly, thus improving production efficiency. The medium flow path 143 is provided in a portion of the stator laminations. The stator laminations with the medium flow path 143 are stacked together with those without. The stator laminations with the medium flow path 143 provide a channel for the flow of medium pressure, while the stator laminations without the medium flow path 143 serve a supporting and isolating function, achieving stable and reliable flow of medium pressure within the stator core 14.

[0201] For example, multiple stator laminations can be divided into several groups along the axial direction of the stator core 14. Each group includes one stator lamination with a medium flow path 143 and one stator lamination without a medium flow path 143. This arrangement allows one stator lamination with a medium flow path 143 to be sandwiched between two stator laminations without a medium flow path 143, effectively guiding and isolating the medium pressure flow within the medium flow path 143 and maintaining stable medium pressure within the medium flow path 143, thereby achieving precise adjustment of the magnetizing assembly 13. In specific embodiments, 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.

[0202] The following is a brief description of a vehicle according to the present disclosure having at least one of the above-described electric drive assemblies 1.

[0203] The vehicle according to this disclosure includes the electric drive assembly 1 in any of the above embodiments. Since the vehicle according to this disclosure includes the electric drive assembly 1 in any of the above embodiments, the vehicle according to this disclosure can achieve 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.

[0204] According to the vehicle control method of this disclosure, as shown in Figure 7, the vehicle includes the electric drive assembly 1 in any of the above embodiments. The drive motor 12 is equipped with a magnetic flux adjustment component 13. The control method includes collecting the torque and speed values ​​of the drive motor 12, determining whether the drive motor 12 needs magnetic flux adjustment based on the collected results, and when the drive motor 12 needs magnetic flux adjustment, changing the position of the magnetic flux adjustment component 13 by adjusting the medium quantity of the first flow path 151. The drive motor 12 is equipped with a magnetic flux adjustment component 13, which allows the drive motor 12 to adjust the magnetic flux according to different operating conditions and requirements to optimize the performance of the drive motor 12. The control method determines whether magnetic flux adjustment is needed based on the operating status of the drive motor 12, and performs corresponding control when necessary. By collecting the torque and speed values ​​of the drive motor 12, the operating state and performance of the drive motor 12 can be determined. Based on the collected torque and speed values, the vehicle system performs a series of calculations and comparisons based on a preset algorithm or model to determine whether the current operating state of the drive motor 12 requires magnetic flux adjustment. If the vehicle system determines that the drive motor 12 needs magnetic flux adjustment, it will adjust the amount of medium in the first flow path 151. Changes in the medium pressure in the first flow path 151 directly affect the pressure on the magnetic flux adjustment assembly 13, thereby changing the position of the magnetic flux adjustment assembly 13. By adjusting the position of the magnetic flux adjustment assembly 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.

[0205] According to some embodiments of this disclosure, as shown in FIG8, the generator 11 is equipped with a magnetic flux adjustment component 13. The vehicle operates in either series or parallel mode. When the vehicle is in series or parallel mode, the control method further includes acquiring the torque and speed values ​​of the engine 18, determining whether the generator 11 needs magnetic flux adjustment based on the acquisition results, and adjusting the medium quantity of the first flow path 151 to change the position of the magnetic flux adjustment component 13 when it is determined that the generator 11 needs magnetic flux adjustment. The generator 11 is equipped with a magnetic flux adjustment component 13, which allows the generator 11 to adjust the magnetic flux according to different operating conditions and requirements to optimize the performance of the generator 11. The vehicle has multiple operating modes, including series and parallel modes. In series mode, the engine 18 and the drive motor 12 are connected in sequence, and the engine 18 can cooperate with the generator 11 to supply power to the drive motor 12; while in parallel mode, the engine 18 and the drive motor 12 can work simultaneously to provide power together. The control method determines whether magnetic flux adjustment is needed based on the operating status of the engine 18 and performs corresponding control when necessary. By collecting the torque and speed values ​​of engine 18, the operating status and performance of generator 11 can be determined. Based on the collected torque and speed values, the vehicle system performs a series of calculations and comparisons using a preset algorithm or model to determine whether the current operating status of generator 11 requires magnetic flux adjustment. If the vehicle system determines that magnetic flux adjustment is needed, it adjusts the medium flow rate in the first flow path 151. Changes in the medium flow rate in the first flow path 151 directly affect the pressure on the magnetic flux adjustment component 13, thereby changing the position of the magnetic flux adjustment component 13. By adjusting the position of the magnetic flux adjustment component 13, the magnetic flux of generator 11 can be controlled, thereby optimizing the performance of generator 11.

[0206] According to some embodiments of this disclosure, after adjusting the amount of medium in the first flow path 151 to change the position of the magnetizing 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 magnetizing operation, the position of the magnetizing 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 magnetizing operation, the efficiency of the generator 11 increases and the heat generation decreases, so the amount of medium in the first cooling flow path 153 can be appropriately reduced.

[0207] According to some embodiments of this disclosure, the drive motor 12 is provided with a first cooling flow path 153. The control method further includes: adjusting the amount of medium in the first cooling flow path 153 of the drive motor 12 when the position of the magnetic adjustment component 13 is adjusted. Changes in the position of the magnetic adjustment component 13 can increase or decrease the magnetic flux of the drive motor 12, thus changing the heat generation of the drive motor 12 accordingly. By adjusting the amount of medium in the first cooling flow path 153, the changes in heat generation can be adapted to improve energy efficiency.

[0208] According to some embodiments of this disclosure, when the position of the magnetizing 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 magnetizing component 13, the magnetic flux of the drive motor 12 is reduced, energy loss is reduced, and therefore heat generation is correspondingly reduced. 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 adequately cooled.

[0209] According to some embodiments of this disclosure, after the position of the magnetizing component 13 is changed, the amount of medium in the first cooling flow path 153 of the drive motor 12 can be reduced after a set time. Alternatively, after the position of the magnetizing component 13 is changed, the input torque of the drive motor 12 is detected, and if a decrease in the input current of the drive motor 12 is detected, the amount of medium in the first cooling flow path 153 is reduced.

[0210] According to some embodiments of this disclosure, as shown in Figure 9, the vehicle controller collects the torque and speed values ​​of the drive motor 12 under the current operating condition. Based on the torque and speed values, the vehicle controller uses an embedded function to determine whether the current operating condition is close to the area requiring magnetic adjustment control. When the operating condition is close to the magnetic adjustment area, the third control valve 164 starts working, so that the medium pressure in the first flow path 151 reaches near the pressure required to control the movement of the magnetic adjustment component 13. When the operating 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 decreases, and the flow rate 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. The control algorithm adjusts the total flow rate of the second flow path 152 by controlling the opening of the second control valve 162 based on the flow rate signal of the second flow path 152 and the pressure signal of the first control valve 161.

[0211] According to some embodiments of this disclosure, the generator 11 is provided with a first cooling flow path 153. The control method further includes adjusting the amount of medium in the first cooling flow path 153 of the generator 11 when the position of the magnetic adjustment component 13 is adjusted. Changes in the position of the magnetic adjustment component 13 can increase or decrease the magnetic flux of the generator 11, thus changing the heat generation of the generator 11 accordingly. By adjusting the amount of medium in the first cooling flow path 153, the changes in heat generation can be adapted to improve energy efficiency.

[0212] According to some embodiments of this disclosure, when the position of the magnetic flux regulating 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 flux regulating component 13 and reducing the magnetic flux of the generator 11, energy loss can be reduced, and therefore heat generation is correspondingly reduced. 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 adequately cooled.

[0213] According to some embodiments of this disclosure, after the position of the magnetizing component 13 is changed, the amount of medium in the first cooling flow path 153 of the generator 11 can be reduced after a set time. Alternatively, after the position of the magnetizing component 13 is changed, the input torque of the generator 11 is detected, and if a decrease in the input current of the generator 11 is detected, the amount of medium in the first cooling flow path 153 is reduced.

[0214] According to some embodiments of this disclosure, as shown in Figure 10, the magnetic adjustment principle of the drive motor 12 in hybrid mode is similar to that in pure electric mode. The magnetic adjustment principle of the drive motor 12 has been described above; the following only describes the magnetic adjustment principle of the generator 11. The vehicle controller collects the torque and speed values ​​of the engine 18 under the current operating conditions. Based on the torque and speed values, the vehicle controller uses an embedded function to determine whether the current operating conditions are close to the area requiring magnetic adjustment control. When the operating conditions are close to the magnetic adjustment area, the third control valve 164 starts working, so that the medium pressure of the first flow path 151 reaches near the pressure required to control the movement of the magnetic adjustment component 13. When the operating conditions enter 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 decreases, and the flow rate of the first cooling flow path 153 is adjusted accordingly. The pressure signal from the first control valve 161 is fed back to the control algorithm. The control algorithm adjusts the total flow rate of the second flow path 152 by controlling the opening degree of the second control valve 162 based on the flow rate signal of the second flow path 152 and the pressure signal from the first control valve 161.

[0215] The following is a brief description of a vehicle that applies the control method described above according to this disclosure.

[0216] The vehicle according to this disclosure includes an execution module that performs the control method in any of the above embodiments. Since the vehicle according to this disclosure includes an execution module that performs the control method in any of the above embodiments, the vehicle according to this disclosure can intelligently adjust the magnetic flux of the drive motor 12 according to actual operating conditions and needs, thereby optimizing the performance of the drive motor 12 and enabling the vehicle to maintain optimal performance under various operating conditions.

[0217] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0218] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An electric drive assembly, wherein, include: Generator (11); A magnetic flux adjustment component (13) is used to adjust the magnetic flux of the generator (11); and A first flow path (151) is connected to the magnetizing component (13). The amount of medium in the first flow path (151) is adjustable to adjust the position of the magnetizing component (13).

2. The electric drive assembly according to claim 1, wherein, It also includes a drive motor (12), which is driveably connected to the generator (11), and the magnetic flux adjustment component (13) is used to adjust the magnetic flux of the generator (11) and / or the drive motor (12).

3. The electric drive assembly according to claim 1, wherein, It also includes: a first control valve (161), which is connected in series with the first flow path (151) to regulate the amount of medium in the first flow path (151).

4. The electric drive assembly according to claim 1, wherein, Also includes: A first cooling flow path (153) is provided for heat exchange with the generator (11); and A second flow path (152) is connected to the first cooling flow path (153). 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).

5. The electric drive assembly according to claim 2, wherein, It also includes: a first control valve (161), which is connected to the first flow path (151) to regulate the amount of medium in the first flow path (151).

6. The electric drive assembly according to claim 5, wherein, Also includes: A first cooling path (153) is provided for cooling the generator (11) and / or the drive motor (12); and A second flow path (152) is connected to the first cooling flow path (153). 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).

7. The electric drive assembly according to claim 6, further comprising: A second control valve (162) is connected to the second flow path (152) to regulate the amount of medium in the first cooling flow path (153).

8. The electric drive assembly according to claim 4, further comprising: A second control valve (162) is connected in series in the second flow path (152) to regulate the amount of medium in the first cooling flow path (153).

9. The electric drive assembly according to claim 7 or 8, wherein, It also includes a first pump (171) connected to the media storage pool, the first pump (171) being connected to the first flow path (151) and the second flow path (152) respectively.

10. The electric drive assembly according to claim 9, wherein, It also includes a pressure regulating valve (163), which is connected between the first pump (171) and the first flow path (151) to regulate the medium pressure of the first flow path (151).

11. The electric drive assembly according to claim 9, wherein, It also includes a pressure regulating valve (163), which is connected in series between the first flow path (151) and the first pump (171) to regulate the medium pressure of the first flow path (151).

12. The electric drive assembly according to claim 10 or 11, wherein, It also includes a third control valve (164), which is connected to the pressure regulating valve (163) to control the outlet pressure of the pressure regulating valve (163).

13. The electric drive assembly according to any one of claims 10-12, wherein, 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).

14. The electric drive assembly according to any one of claims 9-13, wherein, The outlet of the second control valve (162) is connected to the inlet of the first pump (171).

15. The electric drive assembly according to claim 6, wherein, It also includes an engine (18) and a coupling mechanism (19), the engine (18) being connected to the coupling mechanism (19), the coupling mechanism (19) having a first state and a second state, in the first state the engine (18) being connected to the axle drive through the coupling mechanism (19), and in the second state the engine (18) being decoupled from the axle.

16. The electric drive assembly according to claim 15, wherein, It also includes: a second cooling flow path (154), which is connected to the coupling mechanism (19), and a second flow path (152) which is connected to the second cooling flow path (154).

17. The electric drive assembly according to claim 15 or 16, wherein, The coupling mechanism (19) is selectively connected to the first flow path (151) to switch between the first state and the second state.

18. The electric drive assembly according to any one of claims 9-13, wherein, It also includes a second pump (172) connected to the media storage pool, the second pump (172) being connected to the second flow path (152).

19. The electric drive assembly according to claim 4, wherein, The electric drive assembly is configured to adjust the amount of medium in the second flow path (152) to adjust the amount of medium in the first cooling flow path (153) after controlling the amount of medium in the first flow path (151) to move the magnetizing component (13) to a set position.

20. The electric drive assembly according to claim 7, wherein, The electric drive assembly is configured to control the second control valve (162) to regulate the amount of medium in the second flow path (152) after the first control valve (161) is opened to regulate the amount of medium in the first flow path (151).

21. The electric drive assembly according to any one of claims 1-20, wherein, The magnetic flux adjustment assembly (13) includes a magnetic flux adjustment cavity (131) and a magnetic flux adjustment element (132). The magnetic flux adjustment element (132) is movably disposed in the magnetic flux adjustment cavity (131) to adjust the magnetic flux of the generator (11).

22. The electric drive assembly according to claim 21, wherein, The magnetic adjustment element (132) is movably disposed on the stator and / or rotor of the generator (11).

23. The electric drive assembly according to claim 22, wherein, The magnetic adjustment component (132) is movably disposed on the stator yoke of the stator of the generator (11), and the amount of medium in the magnetic adjustment cavity (131) is adjustable to adjust the magnetic flux through the stator teeth of the stator.

24. The electric drive assembly according to claim 23, wherein, There are multiple magnetic adjustment elements (132), and at least some of the magnetic adjustment elements (132) can adjust the magnetic flux through the stator teeth when they move.

25. The electric drive assembly according to claim 22, wherein, The magnetic adjustment cavity (131) is disposed in the rotor of the generator (11), 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 the magnetic adjustment component (132).

26. The electric drive assembly according to claim 25, wherein, The rotor core (201) of the generator (11) is provided with a rotor flow path (2011), which is connected to the magnetic adjustment cavity (131).

27. The electric drive assembly according to claim 26, wherein, The rotor shaft (202) of the generator (11) is provided with a shaft flow path (2021), and the shaft flow path (2021) is connected to the magnetic adjustment cavity (131) through the rotor flow path (2011).

28. The electric drive assembly according to any one of claims 25-27, wherein, The rotor of the generator (11) further includes a partition flow path (2031) disposed in a rotor partition (203). The rotor partition (203) is disposed on at least one side of the rotor of the generator (11) along the axial direction. The partition flow path (2031) is connected to the magnetic adjustment cavity (131).

29. The electric drive assembly according to claim 28, wherein, The rotor shaft (202) of the generator (11) is provided with a shaft flow path (2021), and the shaft flow path (2021) is connected to the magnetic adjustment cavity (131) through the partition flow path (2031).

30. The electric drive assembly according to claim 22, wherein, The magnetic adjustment assembly (13) further includes a magnetic adjustment spring (133), which is 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) cooperate to adjust the position of the magnetic adjustment component (132).

31. The electric drive assembly according to claim 30, wherein, The magnetic adjustment assembly (13) further includes a housing, the housing having a receiving cavity, and the magnetic adjustment element (132) and the magnetic adjustment spring (133) connected to it being disposed within the receiving cavity.

32. The electric drive assembly according to claim 22, wherein, The magnetic adjustment cavity (131) is disposed at at least one end of the rotor along the axial direction. 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 the magnetic adjustment component (132).

33. The electric drive assembly according to claim 32, wherein, The magnetic adjustment cavity (131) has a first inlet (131a) and a second inlet (131b). The magnetic adjustment element (132) separates the first inlet (131a) and the second inlet (131b). A medium is introduced into the magnetic adjustment cavity (131) through the first inlet (131a) to push the magnetic adjustment element (132) axially closer to the rotor. A medium is introduced into the magnetic adjustment cavity (131) through the second inlet (131b) to push the magnetic adjustment element (132) axially away from the rotor.

34. The electric drive assembly according to claim 32 or 33, wherein, The magnetic adjustment assembly (13) further includes an elastic element connected to the magnetic adjustment component (132) for driving the magnetic adjustment component (132) to move in an axial direction away from the rotor.

35. The electric drive assembly according to any one of claims 32-34, wherein, The magnetic adjustment component (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 the axial stator (134).

36. The electric drive assembly according to any one of claims 22-35, wherein, The magnetizing element (132) is movable circumferentially along the generator (11); and / or The magnetic adjustment element (132) can move radially along the generator (11); and / or The magnetic adjustment element (132) can move along the axial direction of the generator (11).

37. The electric drive assembly according to claim 2, wherein, The magnetic flux adjustment assembly (13) includes a magnetic flux adjustment cavity (131) and a magnetic flux adjustment element (132). The magnetic flux adjustment element (132) is movably disposed in the magnetic flux adjustment cavity (131) to adjust the magnetic flux of the generator (11) and / or the drive motor (12).

38. The electric drive assembly according to claim 37, wherein, The magnetic adjustment element (132) is movably disposed on the stator and / or rotor of the generator (11) and / or the drive motor (12).

39. The electric drive assembly according to claim 38, wherein, The magnetic adjustment element (132) of the generator (11) is movable along its axial direction; and / or the magnetic adjustment element (132) of the drive motor (12) is movable along its axial direction; and / or The magnetic adjustment element (132) provided on the generator (11) is movable circumferentially thereon; and / or the magnetic adjustment element (132) provided on the drive motor (12) is movable circumferentially thereon; and / or The magnetic adjustment element (132) provided on the generator (11) can move radially thereon; and / or the magnetic adjustment element (132) provided on the drive motor (12) can move radially thereon.

40. A method for controlling a vehicle, wherein, The vehicle includes an electric drive assembly according to any one of claims 1-39, and the control method includes: Collect the torque and speed values ​​of the generator (11), and determine whether the vehicle needs magnetic adjustment based on the collected results; When the vehicle needs magnetic adjustment, the electric drive assembly changes the position of the magnetic adjustment component (13) by adjusting the amount of medium in the first flow path (151).

41. The vehicle control method according to claim 40, wherein, The electric drive assembly includes a first cooling flow path (153) for heat exchange with the generator (11). When the electric drive assembly changes the position of the magnetizing component (13) by adjusting the amount of medium in the first flow path (151), the control method further includes: Adjust the amount of medium in the first cooling flow path (153).

42. A method for controlling a vehicle, wherein, The vehicle includes an electric drive assembly according to any one of claims 1-39, the electric drive assembly further including a drive motor (12), the drive motor (12) being driveably connected to the generator (11), the magnetic flux adjustment component (13) being used to adjust the magnetic flux of the generator (11) and / or the drive motor (12), the drive motor (12) being provided with the magnetic flux adjustment component (13), and the control method including: Collect the torque and speed values ​​of the drive motor (12), and determine whether the drive motor (12) needs to be magnetically adjusted based on the collection results; When the drive motor (12) needs to be magnetically adjusted, the position of the magnetic adjustment component (13) of the drive motor (12) is changed by adjusting the amount of medium in the first flow path (151).

43. The vehicle control method according to claim 42, wherein, 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.

44. The vehicle control method according to claim 43, wherein, 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.

45. The vehicle control method according to any one of claims 42-44, wherein, The generator (11) is equipped with the magnetic adjustment component (13), the vehicle includes series or parallel operating conditions, and when the vehicle is in the series or parallel operating condition, the control method further includes: Collect the torque and speed values ​​of the engine (18), and determine whether the generator (11) needs magnetic adjustment based on the collected results; When the generator (11) needs to be magnetically adjusted, the position of the magnetic adjustment component (13) of the generator (11) is changed by adjusting the amount of medium in the first flow path (151).

46. ​​The vehicle control method according to claim 45, wherein, 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.

47. The vehicle control method according to claim 46, wherein, 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.

48. A vehicle, wherein, include: The electric drive assembly according to any one of claims 1-39; and / or An execution module for performing the control method according to any one of claims 40-47.

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