Magnetic flux adjustment structure, electric motor, and vehicle

Abstract

A magnetic flux adjustment structure, an electric motor, and a vehicle. The magnetic flux adjustment structure comprises a stator core and a magnetic flux adjusting member. The stator core comprises a stator yoke and stator teeth. The magnetic flux adjusting member is movably arranged on the stator yoke, and at least a portion of the magnetic flux adjusting member can adjust the magnetic flux passing through the stator teeth when the magnetic flux adjusting member moves.

Description

Magnetizing structures, motors, and vehicles

[0001] This application claims priority to Chinese patent application No. 202410684933.0, filed on May 29, 2024, and Chinese patent application No. 202410685043.1, filed on May 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and more particularly to a magnetizing structure, an electric motor, and a vehicle. Background Technology

[0003] Traditional electric motors, such as electrically excited synchronous motors and permanent magnet synchronous motors, while each having their advantages, also have significant performance limitations. Electrically excited synchronous motors are inefficient at low speeds and light loads, while permanent magnet synchronous motors suffer from torque and efficiency limitations at high speeds.

[0004] By introducing additional degrees of freedom for magnetic adjustment, the variable flux permanent magnet motor makes the air gap magnetic field adjustable, thus combining the advantages of both permanent magnet motors and electrically excited motors. Summary of the Invention

[0005] This disclosure provides a magnetic adjustment structure, a motor, and a vehicle. By cooperating with the stator core and the magnetic adjustment component, precise and wide-range adjustment of the magnetic flux passing through the stator teeth is achieved, thereby optimizing motor performance and enabling the motor to maintain excellent performance under different operating conditions.

[0006] On one hand, a magnetic adjustment structure is provided, comprising: a stator core and a magnetic adjustment element, wherein the stator core includes a stator yoke and a stator tooth portion. The magnetic adjustment element is movably disposed on the stator yoke, and at least a portion of the magnetic adjustment element can adjust the magnetic flux passing through the stator tooth portion when it moves.

[0007] In some embodiments, when current flows through the stator windings, a magnetic field is generated around the stator teeth. The magnetic field on the stator interacts with the magnetic field on the rotor, thereby causing the motor to rotate. By moving the magnetic adjustment element, the magnetic flux passing through the stator teeth can be continuously or segmentally adjusted as the radial facing area between the magnetic adjustment element and the stator teeth changes, enabling precise and wide-range adjustment of the motor's magnetic flux. The magnetic adjustment element can be adjusted as a whole, thereby simultaneously adjusting the magnetic flux passing through multiple stator teeth to achieve uniform magnetic field adjustment. A portion of the magnetic adjustment element can also be adjusted independently, allowing for localized adjustment of the magnetic flux passing through specific stator teeth. Furthermore, the stator yoke is provided with magnetic adjustment slots, which cooperate with the magnetic adjustment element to adjust the magnetic flux. The magnetic adjustment slots provide movable space for the magnetic adjustment element, reducing frictional losses and improving the magnetic adjustment response speed. When the magnetic adjustment element moves within the magnetic adjustment slots in the stator yoke, the magnetic flux passing through the stator teeth can be directly adjusted.

[0008] On the other hand, an electric motor is provided, the electric motor including the above-described magnetizing structure.

[0009] Since the motors in some embodiments of this disclosure include the above-described magnetizing structure, the motors in some embodiments of this disclosure can achieve fine adjustment of magnetic flux by moving the magnetizing component, thereby optimizing motor performance and meeting different operating requirements. The magnetizing component effectively adjusts the permanent magnet magnetic field, thereby enabling real-time control of the motor's no-load back EMF, which helps the motor achieve optimal performance in different speed ranges. In the low-speed range, increasing the no-load back EMF can increase the torque performance and power in the low-speed range, making the hybrid vehicle more powerful when driving at low speeds. In the high-speed range, reducing the no-load back EMF can reduce core losses, widen the constant power range, increase peak torque and power, and also help prevent inverter damage due to overvoltage.

[0010] In another aspect, a vehicle is provided, the vehicle including an electric drive system, the electric drive system including the aforementioned motor.

[0011] Since the electric drive system of the vehicle in some embodiments of this disclosure includes the aforementioned motor, the vehicle can adjust the no-load back EMF in real time according to different working requirements, thereby optimizing driving performance. Furthermore, the magnetic adjustment structure in some embodiments of this disclosure can reuse the existing hydraulic system on the vehicle. By reusing the hydraulic fluid of the vehicle or powertrain, no additional power source is required. The system operating point can be optimized in real time according to working conditions, improving system efficiency. It is also low-cost, has minimal losses, and can be applied to all hydraulic system vehicle models.

[0012] Furthermore, in some embodiments of this disclosure, the vehicle only requires additional electrical energy when adjusting the magnetic field. The system operating point can be optimized in real time according to the operating conditions, and the performance optimization and efficiency improvement effect of adjusting the magnetic field is more significant, thereby reducing the electrical energy consumed by the entire vehicle system.

[0013] 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

[0014] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 is a structural diagram of the stator core in a magnetizing structure according to some embodiments;

[0016] Figure 2 is a structural diagram of a magnetizing structure according to some embodiments, in which the sub-magnetizing element and the elastic element are disposed in the receiving cavity of the base;

[0017] Figure 3 is a structural diagram of the cooperation between the sub-magnetic tuning element and the elastic element in a magnetizing structure according to some embodiments;

[0018] Figure 4 is a magnetic field diagram of a magnetic adjustment structure according to some embodiments, in which the magnetic adjustment element is directly facing the stator teeth.

[0019] Figure 5 is a magnetic field diagram of a magnetic adjustment structure according to some embodiments, when the magnetic adjustment element and the stator teeth are misaligned.

[0020] Figure 6 is a structural diagram of the first lamination in the stator core of a magnetizing structure according to some embodiments;

[0021] Figure 7 is a diagram showing the arrangement of the base in the stator core in a magnetizing structure according to some embodiments;

[0022] Figure 8 is a structural diagram of a magnetizing structure according to some embodiments from one view.

[0023] Figure 9 is a structural diagram of a magnetizing structure according to some embodiments from another perspective;

[0024] Figure 10 is another structural diagram of the first lamination in a stator core of a magnetizing structure according to some embodiments;

[0025] Figure 11 is another structural diagram of the first lamination in a stator core according to some embodiments of a magnetic tuning structure;

[0026] Figure 12 is a structural diagram of the stator core and base fitting together according to some embodiments of a magnetic adjustment structure;

[0027] Figure 13 is a structural diagram of the stator core and the magnetic adjustment component in another magnetic adjustment structure according to some embodiments;

[0028] Figure 14 is a side view of the stator core and the magnetic adjustment component cooperating in another magnetic adjustment structure according to some embodiments;

[0029] Figure 15 is a structural diagram of a combination of a magnetizing element, a drive ring, and a fixed ring according to some embodiments of a magnetizing structure.

[0030] Figure 16 is a front view of a combination of a magnetizing element, a drive ring, and a fixed ring in another magnetizing structure according to some embodiments;

[0031] Figure 17 is a structural diagram of another magnetizing structure according to some embodiments, when the magnetizing element is facing the stator teeth;

[0032] Figure 18 is a structural diagram of another magnetizing structure according to some embodiments, when the magnetizing element and the stator teeth are misaligned;

[0033] Figure 19 is a magnetic field diagram of another magnetic adjustment structure according to some embodiments, when the magnetic adjustment element is facing the stator teeth.

[0034] Figure 20 is a magnetic field diagram of a different magnetic adjustment structure according to some embodiments, when the magnetic adjustment element and the stator teeth are misaligned.

[0035] Figure 21 is a block diagram of a motor according to some embodiments;

[0036] Figure 22 is a block diagram of an electric drive system according to some embodiments;

[0037] Figure 23 is a block diagram of a vehicle according to some embodiments.

[0038] Reference numerals: Vehicle 1000; Electric drive system 100; Motor 10; Magnetizing structure 1; Stator core 11, Stator yoke 111, Stator teeth 112, Stator slot 113, Magnetizing slot 114, Stator laminations 115, First lamination 1151, Second lamination 1152; Magnetizing element 121; Driving element 122; Elastic element 1221; First oil guide channel 1222, First slot 1222a, Intermediate slot 1222b, Second slot 1222c; Second oil guide channel 1223, Connecting slot 1223a; Base 13; Housing 14, Shaft guide oil hole 141; Magnetizing motor 1211, Transmission gear 1212, Drive ring 123, External gear ring 1231, Fixed ring 124. Detailed Implementation

[0039] The embodiments of this disclosure are described in detail below, examples of which 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 are only used to explain this disclosure, and should not be construed as limiting this disclosure.

[0040] In the description of this disclosure, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this disclosure and simplifying the description, and do not 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. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection 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.

[0042] The motors in related technologies have some shortcomings. How to achieve precise and wide-range magnetic flux adjustment to ensure the maximization of motor performance under different operating conditions remains a problem that needs to be solved.

[0043] Therefore, this disclosure provides a magnetizing structure 1 according to some embodiments. The magnetizing structure 1 according to some embodiments of this disclosure is described below with reference to the accompanying drawings.

[0044] As shown in Figures 1-6, the magnetic adjustment structure 1 of some embodiments of this disclosure includes a stator core 11 and a magnetic adjustment component. The stator core 11 includes a stator yoke 111 and a stator tooth 112. The magnetic adjustment component is movably disposed on the stator yoke 111, and at least part of the magnetic adjustment component can adjust the magnetic flux through the stator tooth 112 when it moves.

[0045] The magnetic flux adjustment structure 1 of some embodiments of this disclosure generates a magnetic field around the stator teeth 112 when current passes through the stator windings. The magnetic field on the stator interacts with the magnetic field on the rotor, thereby realizing the rotation of the motor. When the magnetic flux adjustment component moves on the stator yoke 111, the magnetic flux passing through the stator teeth 112 can be directly adjusted. By moving the magnetic flux adjustment component, the radial facing area between the magnetic flux adjustment component and the stator teeth 112 changes, thereby realizing continuous or segmented adjustment of the magnetic flux passing through the stator teeth 112, and enabling precise and wide-range adjustment of the motor's magnetic flux.

[0046] In some embodiments, the stator tooth portion 112 includes a plurality of sub-stator teeth arranged circumferentially along the stator yoke portion 111. It should be noted that the magnetic adjustment element can be adjusted in position as a whole, thereby simultaneously regulating the magnetic flux through the plurality of sub-stator teeth to achieve uniformity of magnetic field regulation. A portion of the magnetic adjustment element can also be adjusted in position independently, allowing for localized adjustment of the magnetic flux through specific sub-stator teeth.

[0047] In some embodiments, the magnetic adjustment element includes a plurality of sub-magnetic adjustment elements 121, at least a portion of which can adjust the magnetic flux through the stator core 11 when moved. That is, the plurality of sub-magnetic adjustment elements 121 can be adjusted in position simultaneously, and a portion of the plurality of sub-magnetic adjustment elements 121 can also be adjusted in position independently.

[0048] Therefore, the magnetic adjustment structure 1 of some embodiments of this disclosure, through the cooperation of the stator core 11 and the magnetic adjustment component, realizes precise and wide-range adjustment of the magnetic flux passing through the stator teeth 112, thereby optimizing the motor performance and enabling the motor to maintain excellent performance under different operating conditions.

[0049] It should be noted that in Figures 4, 5 and 6, Figures 4 and 5 are structural diagrams of the stator core 11 from a top view, while Figure 6 is a structural diagram of the stator core 11 from a bottom view.

[0050] In some embodiments, at least some of the movable magnetic adjustment elements are axially symmetrical and evenly distributed on the stator core 11. The arrangement of the magnetic adjustment elements is around one or more axes of symmetry; for example, a plurality of sub-magnetic adjustment elements 121 are arranged on the stator core 11 around one or more axes of symmetry. When adjusting the magnetic flux, the at least some movable magnetic adjustment elements are axially symmetrical to each other, and the positions of the at least some movable magnetic adjustment elements on the stator core 11 are equally spaced. That is, in the circumferential direction of the stator core 11, the interval between any two adjacent sub-magnetic adjustment elements 121 is equal. In this way, uniformity of magnetic field adjustment can be achieved.

[0051] In some embodiments, as shown in FIG6, the magnetizing structure 1 further includes a drive member 122, which is configured to adjust the pressure at at least part of the magnetizing member at both ends to drive at least part of the magnetizing member to move.

[0052] In some embodiments, the drive member 122 is configured to control and adjust the positions of a plurality of sub-tuning magnetic elements 121. In this case, the drive member 122 can drive the plurality of sub-tuning magnetic elements 121 to move in order to achieve a change in the magnetic field. For example, the drive member 122 may be connected to the plurality of sub-tuning magnetic elements 121. In this case, the drive member 122 controls the position and direction of movement of the plurality of sub-tuning magnetic elements 121 by transmitting force to the plurality of sub-tuning magnetic elements 121, thereby moving the plurality of sub-tuning magnetic elements 121 and thus adjusting the magnetic flux.

[0053] In some embodiments, the drive member 122 can also be configured to adjust the pressure at both ends of each of the plurality of sub-tuning magnets 121. In this case, the drive member 122 controls the position and direction of movement of each sub-tuning magnet 121 by adjusting the pressure at both ends of each sub-tuning magnet 121. For example, when the pressure at both ends of the sub-tuning magnet 121 is equal, the sub-tuning magnet 121 does not move. However, when the drive member 122 increases the pressure at one end of the sub-tuning magnet 121, the sub-tuning magnet 121 will move to the other end, and vice versa. Therefore, the drive member 122 can achieve continuous and fine adjustment of the position of the sub-tuning magnet 121, thereby adjusting the magnetic flux of the motor and optimizing the performance of the motor.

[0054] In some embodiments, as shown in FIG1, the stator yoke 111 is provided with a plurality of magnetic adjustment slots 114. The magnetic adjustment slots 114 provide movable space for the sub-magnetic adjustment element 121, which can reduce the frictional loss of the magnetic adjustment element and thus improve the response speed of the magnetic adjustment element. Each of the plurality of magnetic adjustment slots 114 contains a sub-magnetic adjustment element 121, and each magnetic adjustment slot 114 contains a first chamber and a second chamber located at both ends of the corresponding sub-magnetic adjustment element 121 along the circumferential direction of the stator core 11. The drive member 122 is configured to adjust the hydraulic pressure in at least one of the first chambers or the second chamber to adjust the position of the sub-magnetic adjustment element 121 in the circumferential direction of the stator core 11. By setting a sub-adjusting magnetic element 121 in each adjusting magnetic slot 114, and setting a first chamber and a second chamber at both ends of the sub-adjusting magnetic element 121 along the circumference of the stator core 11, the hydraulic pressure in at least one of the first chamber or the second chamber is adjusted by the driving element 122, so that a pressure difference is generated at both ends of the sub-adjusting magnetic element 121 along the circumference of the stator core 11. In this way, the sub-adjusting magnetic element 121 will move under the action of the pressure difference, thereby realizing the control of the position of the adjusting magnetic element.

[0055] Understandably, the drive unit 122 can adjust the hydraulic pressure in at least one of the first or second chambers, causing the two ends of the sub-adjusting magnetic element 121 to be subjected to different pressures. When the drive unit 122 increases the hydraulic pressure in the first chamber, the pressure exerted by the first chamber on the sub-adjusting magnetic element 121 increases, causing the sub-adjusting magnetic element 121 to move towards the second chamber. Conversely, when the drive unit 122 decreases the hydraulic pressure in the first chamber, the sub-adjusting magnetic element 121 is subjected to a relatively higher pressure in the second chamber, causing it to move towards the first chamber. Similarly, adjusting the hydraulic pressure in the second chamber also affects the position of the sub-adjusting magnetic element 121. Because hydraulic force transmission has a fast response speed and high control precision, the drive unit 122 can quickly and accurately respond to changes in the motor's operating requirements, adjusting the position of the adjusting magnetic element in real time, thereby optimizing the motor's performance.

[0056] In some embodiments, the drive member 122 includes an oil passage disposed on the stator core 11, the oil passage communicating with a first chamber and a second chamber respectively, and the oil passage configured to adjust the oil pressure in the first chamber and the second chamber. By providing an oil passage on the stator core 11, the oil pressure in the first chamber and the second chamber can be adjusted through the oil passage, causing changes in the oil pressure within the first chamber and the second chamber. Changes in oil pressure directly affect the pressure at both ends of the sub-adjusting magnet 121, thereby enabling the movement of the sub-adjusting magnet 121. It is understood that the oil passage communicating with the first chamber and the second chamber respectively allows for adjustment of the oil pressure within the first chamber and the second chamber respectively. When the drive member 122 needs to change the position of the sub-adjusting magnet 121, the drive member 122 controls the oil pressure within the oil passage, causing a change in the oil pressure within the first chamber or at least one of the second chambers. When a pressure difference is generated between the oil pressure in the first chamber and the oil pressure in the second chamber, the sub-adjusting magnetic component 121 will move under the action of the pressure difference, thereby realizing continuous and fine adjustment of the position of the adjusting magnetic component.

[0057] In some embodiments, as shown in Figures 1-3, the drive member 122 includes an oil passage and an elastic member 1221 disposed in the stator core 11. The oil passage communicates with the first chamber to adjust the oil pressure in the first chamber, and the elastic member 1221 is disposed in the second chamber and connected to the corresponding sub-adjustment magnet 121. By providing an oil passage on the stator core 11 and making the oil passage communicate with the first chamber, the oil pressure in the first chamber can be adjusted. When the drive member 122 needs to change the position of the sub-adjustment magnet 121, the drive member 122 controls the oil pressure in the oil passage, causing a change in the oil pressure in the first chamber. The change in oil pressure directly affects the pressure on the end of the sub-adjustment magnet 121 near the first chamber, thereby realizing the movement of the sub-adjustment magnet 121. By providing the elastic member 1221 in the second chamber and connecting the elastic member 1221 to the sub-adjustment magnet 121, the elastic member 1221 can provide an elastic force opposite to the oil pressure in the first chamber. When the oil pressure in the first chamber increases, the sub-adjusting magnetic element 121 moves towards the second chamber under the influence of the oil pressure. Simultaneously, the elastic element 1221 compresses until its elastic force balances with the oil pressure in the first chamber, at which point the sub-adjusting magnetic element 121 remains in its new position. Conversely, when the oil pressure in the first chamber decreases, the elastic force of the elastic element 1221 causes the sub-adjusting magnetic element 121 to move towards the first chamber until the elastic force and oil pressure reach a new equilibrium. Through the coordination of the elastic element 1221 and the oil pressure in the first chamber, the elastic force of the elastic element 1221 and the oil pressure in the first chamber jointly determine the position of the sub-adjusting magnetic element 121, achieving continuous and precise adjustment of the magnetic element's position.

[0058] It should be noted that in some embodiments of this disclosure, the elastic element 1221 may be a spring or other elastic mechanism. The elastic form includes, but is not limited to, tension or compression.

[0059] In some embodiments, as shown in Figures 4 and 5, the sub-adjusting magnet 121 has a first state and a second state. In the first state, the first chamber has a first oil level, and the sub-adjusting magnet 121 is directly opposite to the corresponding stator teeth. In the second state, the first chamber has a second oil level, and the sub-adjusting magnet 121 is misaligned with the corresponding stator teeth, with the first oil level being less than the second oil level. For example, the magnet adjusting assembly 12 includes a first state and a second state. In the first state, the elastic member 1221 pushes the sub-adjusting magnet 121 to be directly opposite to the corresponding stator teeth. In the second state, the first chamber is filled with oil, and the elastic member 1221 is compressed, causing the sub-adjusting magnet 121 to be misaligned with the corresponding stator teeth.

[0060] In some embodiments of this disclosure, the sub-adjusting magnetic element 121 can switch between a first state and a second state to adjust the magnetic flux of the motor. In the first state, the elastic element 1221 exerts its elastic force to push the sub-adjusting magnetic element 121 to a position directly opposite the corresponding stator teeth. At this time, the gap between the sub-adjusting magnetic element 121 and the corresponding stator teeth is minimal, the magnetic flux path is at its widest, and the magnetic resistance is relatively low, thereby allowing a larger magnetic flux to pass through the magnetic circuit. When it is necessary to adjust the magnetic flux of the motor, the sub-adjusting magnetic element 121 enters the second state. In the second state, the first chamber is filled with oil, and the pressure of the oil acts on the sub-adjusting magnetic element 121, causing the elastic element 1221 to be compressed.

[0061] Due to the hydraulic pressure, the sub-adjusting magnetic element 121 misaligns with the stator teeth, narrowing the magnetic flux path, increasing magnetic reluctance, and consequently reducing the magnetic flux. It should be noted that the degree of misalignment between the sub-adjusting magnetic element 121 and the stator teeth can be controlled by adjusting the hydraulic pressure, thereby achieving continuous adjustment of the motor's magnetic flux. In the second state, the motor can adjust the magnetic flux according to operational requirements, achieving more flexible and efficient performance control. Furthermore, in the second state (i.e., when magnetic adjustment is required), the sub-adjusting magnetic element 121 requires hydraulic pressure to drive it, while in the first state (i.e., when magnetic adjustment is not required), no hydraulic pressure is needed, thus helping to reduce energy consumption.

[0062] In some embodiments, as shown in FIG3, each sub-adjusting magnetic element 121 is provided with a plurality of elastic elements 1221. Along the axial direction of the stator core 11, the plurality of elastic elements 1221 are connected to the corresponding sub-adjusting magnetic element 121. By providing a plurality of elastic elements 1221 for each sub-adjusting magnetic element 121 and connecting the plurality of elastic elements 1221 to the sub-adjusting magnetic element 121 along the axial direction of the stator core 11, multi-point support for the sub-adjusting magnetic element 121 in the axial direction is achieved, allowing the sub-adjusting magnetic element 121 to be subjected to force more uniformly and stably. The synergistic action of the plurality of elastic elements 1221 and their cooperation with the hydraulic pressure in the first chamber enhance the smoothness of the sub-adjusting magnetic element 121 during movement, improving the accuracy and stability of the position adjustment of the sub-adjusting magnetic element 121. Furthermore, by adjusting the number, distribution, and elastic coefficient of the elastic elements 1221, precise control of the movement characteristics of the sub-adjusting magnetic element 121 can be achieved, thereby enabling the magnetic adjustment structure 1 to adapt to different working conditions and requirements.

[0063] In some embodiments, as shown in Figures 2, 7, and 12, the magnetizing structure 1 further includes a plurality of bases 13, each of which is disposed within a corresponding magnetizing groove 114. One end of an elastic element 1221 is connected to a corresponding sub-magnetizing element 121, and the other end of the elastic element 1221 is connected to a corresponding base 13. The connection between the elastic element 1221 and the base 13 provides stable support for the elastic element 1221, allowing it to stably contract or expand between the sub-magnetizing element 121 and the base 13 to provide elastic force. Furthermore, when the base 13 is placed within the magnetizing groove 114, the first chamber and the second chamber are located within the receiving cavity and are distributed at both ends of the sub-magnetizing element 121 along the circumference of the stator core 11.

[0064] In some embodiments, as shown in FIG2, each base 13 has a receiving cavity open on one side along the axial direction of the stator core 11, and each sub-adjusting magnetic element 121 and its connected elastic element 1221 are disposed in the receiving cavity. By providing the base 13, each base 13 is provided with a receiving cavity, and the receiving cavity is open on one side along the axial direction of the stator core 11, so that the sub-adjusting magnetic element 121 and the elastic element 1221 connected to the sub-adjusting magnetic element 121 can be easily placed into the receiving cavity. Thus, the receiving cavity provides a stable working environment for the sub-adjusting magnetic element 121 and the elastic element 1221. In addition, during assembly, after the sub-adjusting magnetic element 121 and the elastic element 1221 connected to the sub-adjusting magnetic element 121 are placed into the receiving cavity, the base 13 is then placed in the adjusting slot 114, thereby simplifying the assembly process of the adjusting magnetic structure 1 and improving production efficiency.

[0065] In some embodiments, as shown in Figures 1 and 7, the base 13 is provided with an oil port communicating with the receiving cavity. The oil port is located on the outer side wall of the receiving cavity along the radial direction of the stator core 11. The oil port is a channel communicating between the oil passage and the receiving cavity. Oil in the oil passage can flow into the receiving cavity through the oil port to generate pressure on the magnetic adjustment element 121. Since the oil port is located on the outer side wall of the receiving cavity along the radial direction of the stator core 11, oil can flow from the outer periphery of the stator core 11 along the radial direction of the stator core 11 to the oil port, thereby reducing the flow path length of the oil and shortening the response time of the magnetic adjustment element.

[0066] In some embodiments, as shown in FIG1, the magnetizing structure 1 further includes a housing 14, within which the stator core 11 is disposed. The housing 14 is configured to house and protect the stator core 11. An axial guide oil hole 141 is provided within the housing 14, communicating with the oil passage of the drive member 122. Oil can flow axially within the housing 14 through the axial guide oil hole 141, thereby forming an effective connection with the oil passage. For example, oil can flow from the outside into the axial guide oil hole 141 within the housing 14, and then through the oil passage into the receiving cavity, thereby achieving precise control of the magnetizing member.

[0067] In some embodiments, as shown in Figures 8-12, the stator core 11 includes a plurality of stator laminations 115 stacked axially, and at least a portion of the stator laminations 115 are provided with oil passages. The stator core 11 is formed by stacking multiple stator laminations 115, which helps to enhance the overall strength and structural stability of the stator core 11, and also facilitates the manufacturing and assembly of the stator core 11, improving the production efficiency of the stator core 11. The stator laminations 115 with oil passages are stacked together with stator laminations 115 without oil passages. The stator laminations 115 with oil passages provide a flow channel for oil, while the stator laminations 115 without oil passages serve a supporting and isolating function, thereby achieving stable and reliable oil flow within the stator core 11.

[0068] For example, multiple stator laminations 115 can be divided into several groups along the axial direction of the stator core 11. Each group includes one stator lamination 115 with an oil passage and one stator lamination 115 without an oil passage. This allows a stator lamination 115 with an oil passage to be sandwiched between two stator laminations 115 without an oil passage in the stator core 11, effectively guiding and isolating the oil flow within the oil passage and maintaining stable oil pressure to achieve precise adjustment of the magnetic adjustment components. In some embodiments, the grouping method can be adjusted according to the motor's requirements and design parameters. The number of stator laminations 115 in each group can be increased as needed to adapt to different oil flow requirements and the overall structural requirements of the stator core 11.

[0069] In some embodiments, as shown in Figures 8-12, the plurality of stator laminations 115 include at least two first laminations 1151 and a second lamination 1152. Oil passages are provided on the first laminations 1151, while the second laminations 1152 do not have oil passages. That is, the stator laminations 115 include at least two types: first laminations 1151 and second laminations 1152. For example, there are at least two first laminations 1151, and the first laminations 1151 have oil passages, while the second laminations 1152 do not. When the first laminations 1151 and second laminations 1152 are stacked, the second laminations 1152 can isolate the oil passages on the first laminations 1151, thereby achieving stable and reliable oil flow within the stator core 11, and also maintaining the overall structural strength and stability of the stator core 11.

[0070] In some embodiments, the oil passage includes a first oil guide channel 1222 and a second oil guide channel 1223 spaced apart circumferentially along the stator core 11. At least two adjacent first laminations 1151 are staggered by a predetermined angle circumferentially along the stator core 11, such that the first oil guide channel 1222 of one of the two adjacent first laminations 1151 is connected to the second oil guide channel 1223 of the other of the two adjacent first laminations 1151 in both the axial and radial directions of the stator core 11. The first oil guide channel 1222 and the second oil guide channel 1223 are spaced apart circumferentially along the stator core 11 and together form the path for the oil to flow in the stator core 11. The oil can flow between the first oil guide channel 1222 and the second oil guide channel 1223, thereby achieving uniform distribution and efficient circulation of the oil in the stator core 11, and thus enabling the oil to generate stable oil pressure in the oil passage.

[0071] In some embodiments, the first oil guide channel 1222 includes a plurality of first slots arranged radially spaced along the stator core 11. The first slot located at the innermost radial end of the stator core 11 connects to at least one of the first chamber or the second chamber, and the first slot located at the outermost radial end of the stator core 11 connects to the outer periphery of the first lamination 1151. The second oil guide channel 1223 is configured to connect different first slots on two adjacent first laminations 1151. Oil can smoothly enter the interior of the stator core 11 through the first slot located at the outermost radial end of the stator core 11, and then flow into the first slot located at the innermost radial end of the stator core 11 through the second oil guide channel 1223. The first slot located at the innermost radial end of the stator core 11 connects to at least one of the first chamber or the second chamber, thereby enabling control of the position of the adjusting element.

[0072] In some embodiments, as shown in Figures 8-12, a plurality of first slots include a first slot 1222a, an intermediate slot 1222b, and a second slot 1222c arranged radially spaced and sequentially along the stator core 11. The first slot 1222a has an opening located on the outer periphery of the first lamination 1151, and the second slot 1222c communicates with the first chamber. The second oil guide channel 1223 includes at least two communicating slots 1223a arranged radially spaced along the stator core 11. Two adjacent first laminations 1151 are staggered, such that the first slot 1222a and the intermediate slot 1222b in one first lamination 1151 are connected through one of the at least two communicating slots 1223a in the adjacent first lamination 1151, and the intermediate slot 1222b and the second slot 1222c in one first lamination 1151 are connected through the other of the at least two communicating slots 1223a in the adjacent first lamination 1151.

[0073] It is understandable that by offsetting two adjacent first laminations 1151 by a predetermined angle along the circumference of the stator core 11, the first slot 1222a and the intermediate slot 1222b, as well as the intermediate slot 1222b and the second slot 1222c, can be connected through the connecting slot 1223a of the adjacent first laminations 1151, thus forming a complete oil flow path. This allows the oil to flow between different first slots and connecting slots 1223a, achieving uniform distribution and efficient circulation of the oil within the stator core 11, thereby generating stable oil pressure within the oil passage. Furthermore, the first slot 1222a has an opening located on the outer periphery of the first lamination 1151, allowing the oil to smoothly enter the stator core 11 through this opening. The second slot 1222c communicates with the first chamber, allowing oil inside the stator core 11 to flow into the first chamber through the second slot 1222c, thus controlling the position of the adjusting magnetic components.

[0074] In some embodiments, as shown in FIG1, the adjusting slot 114 extends circumferentially along the stator core 11. The adjusting slot 114 extending circumferentially along the stator core 11 cooperates with the sub-adjusting element 121, allowing the sub-adjusting element 121 to move circumferentially along the adjusting slot 114 in the stator core 11, thereby reducing frictional loss of the adjusting element and improving its response speed. Furthermore, the circumferential movement of the sub-adjusting element 121 in the stator core 11 does not occupy the radial external space of the stator core 11, thus making the structure of the adjusting structure 1 more compact.

[0075] In some embodiments, the cross-section of the sub-tuning magnet 121 is formed as a rectangular or arc-shaped shape extending circumferentially along the stator core 11, thereby facilitating the processing and shaping of the sub-tuning magnet 121.

[0076] In some embodiments, the sub-adjusting magnet 121 is disposed axially corresponding to at least a portion of the stator core 11. The axial dimension of the sub-adjusting magnet 121 may be equal to the axial dimension of the stator core 11, or it may be less than or greater than the axial dimension of the stator core 11. In FIG. 3, h represents the axial dimension of the sub-adjusting magnet 121. For example, the ratio of the axial dimension of the sub-adjusting magnet 121 to the axial dimension of the stator core 11 ranges from 10% to 100%. For example, this ratio may be 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, etc.

[0077] In some embodiments, the circumferential dimension of the sub-adjusting magnet 121 ranges from (0.3-0.8)×360° / Ns, where Ns is the number of stator slots (i.e., the number of stator slots 113) or the number of stator teeth (i.e., the number of sub-stator teeth in the stator tooth portion 112). The circumferential dimension of the sub-adjusting magnet 121 is the angular range covered by the sub-adjusting magnet 121 along the circumference of the stator core 11. As shown in Figure 3, α represents the circumferential dimension of the sub-adjusting magnet 121. The circumferential dimension of the sub-adjusting magnet 121 directly determines the movable range of the sub-adjusting magnet 121 within the adjusting slot 114. Therefore, by setting the circumferential dimension of the sub-adjusting magnetic component 121 to (0.3-0.8)×360° / Ns, while ensuring that the sub-adjusting magnetic component 121 has a sufficient range of movement, it also ensures that the variation range of the radially facing area between the sub-adjusting magnetic component 121 and the sub-stator teeth of the stator core 11 can guarantee that the magnetic adjustment structure 1 has sufficient magnetic field adjustment capability, thereby taking into account both the range and precision of magnetic field adjustment.

[0078] In some embodiments, as shown in FIG1, the magnetic adjustment slot 114 is disposed adjacent to the stator teeth 112. The stator teeth 112 is the region in the motor magnetic circuit most prone to magnetic flux density saturation. When the magnetic flux density is saturated, the motor's magnetic reluctance increases, thereby reducing the motor's magnetic flux and electromagnetic force, which affects the motor's output capability. The magnetic adjustment structure 1 of some embodiments of this disclosure, by disposing the magnetic adjustment slot 114 in the stator yoke 111 and adjacent to the stator teeth 112, allows the magnetic adjustment element to effectively adjust the magnetic reluctance of the magnetic circuit near the stator teeth 112 when moving within the magnetic adjustment slot 114. This enables more magnetic flux to pass through the stator teeth 112, achieving a wide range of adjustment of the motor's magnetic flux, thereby enhancing the motor's performance and enabling the motor to adapt to different working conditions and requirements.

[0079] In some embodiments, as shown in Figures 8 and 9, a first lamination 1151 is distributed in the middle of the stator core 11 along its axial direction. By arranging the first lamination 1151 in the middle of the stator core 11, the oil inside the stator core 11 can flow in the middle position of the stator core 11. This optimizes the oil flow path, allowing the oil to be supplied to the first chamber in a timely manner, thereby improving the response speed of the magnetizing element. Furthermore, by providing second laminations 1152 at both ends of the stator core 11 along its axial direction, the stability and strength of the overall structure of the stator core 11 can be increased, and it can also isolate and protect the oil passage, preventing the oil from leaking out or being disturbed during flow.

[0080] Understandably, the first lamination 1151 can also be located at the end of the stator core 11 to avoid interfering with the movement of the sub-tuning magnet 121.

[0081] It should be noted that in some embodiments of this disclosure, as shown in Figures 10 and 11, which are two different embodiments of the first lamination 1151, in the stator core 11, each stator slot 113 may be provided with a corresponding magnetic adjustment slot 114, or a portion of the stator slots 113 may be provided with a corresponding magnetic adjustment slot 114. The magnetic adjustment slots 114 need to be evenly distributed in the circumferential direction of the stator core 11 to achieve uniformity of magnetic field adjustment. That is, an adjacent sub-stator tooth is provided with a corresponding magnetic adjustment slot 114.

[0082] In some embodiments, the total number of stator slots 113 is N, and the number of stator slots 113 with corresponding magnetic adjustment slots 114 is N / 2, that is, one magnetic adjustment slot 114 is provided every other stator slot 113. In some embodiments, the total number of stator slots 113 is N, and the number of stator slots 113 with magnetic adjustment slots 114 is N / 3, that is, one magnetic adjustment slot 114 is provided every two stator slots 113.

[0083] In some embodiments, as shown in FIG11, each sub-stator tooth is provided with a corresponding magnetic adjustment groove 114. The design of the closest distance between the surface of the magnetic adjustment groove 114 and the stator groove 113 should take into account the structural integrity, process feasibility and strength of the stator core 11. Under the premise that the process and strength can be guaranteed, the closer the distance is, the better.

[0084] In addition, the distance between two adjacent magnetic adjustment slots 114 in the circumferential direction of the stator core 11 should also take into account the structural integrity, process feasibility and strength of the stator core 11. The circumferential angle occupied by a single magnetic adjustment slot 114 in the circumferential direction of the stator core 11 should not exceed 360° / Ns, where Ns is the number of stator slots or the number of stator teeth.

[0085] In some embodiments, the radial thickness of a single magnetic adjustment slot 114 is set to 0.5 mm to Y / 2, where Y is the radial thickness of the stator yoke 111. This facilitates the machining of the magnetic adjustment slot 114 while ensuring the overall structural strength of the stator core 11, and also allows the sub-magnetic adjustment component 121 to have a suitable radial width to ensure its structural strength, as shown in Figure 3 where d represents the radial width of the sub-magnetic adjustment component 121.

[0086] In some embodiments, as shown in FIG10, there is only one magnetic adjustment slot 114 corresponding to two adjacent sub-stator teeth. The design of the closest distance between the surface of the magnetic adjustment slot 114 and the stator slot 113 should take into account the structural integrity, process feasibility and strength of the stator core 11. Under the premise that the process and strength can be guaranteed, the closer the distance is, the better.

[0087] Since there is only one magnetic adjustment slot 114 between two adjacent sub-stator teeth, the circumferential angle of the magnetic adjustment slot 114 does not exceed 360° / (N / 2).

[0088] In some embodiments, the radial thickness of a single magnetic adjustment slot 114 is set to 0.5 mm to Y / 2, which facilitates the processing of the magnetic adjustment slot 114 while ensuring the overall structural strength of the stator core 11, and makes the sub-magnetic adjustment component 121 have a suitable radial width to ensure the structural strength of the sub-magnetic adjustment component 121.

[0089] In some embodiments, the magnetizing structure 1 satisfies at least one of the following: each sub-magnetic element 121 is movable circumferentially along the stator core 11, or each sub-magnetic element 121 is movable radially along the stator core 11. The magnetizing structure 1 does not limit the direction of movement of the sub-magnetic elements 121. The direction of movement of the sub-magnetic elements 121 may be circumferentially along the stator core 11, radially along the stator core 11, or a combination of circumferential and radial movement along the stator core 11.

[0090] In some embodiments, the sub-adjusting magnetic element 121 can also move along the axial direction of the stator core 11. Thus, the sub-adjusting magnetic element 121 can move not only in at least one of the circumferential or radial directions of the stator core 11, but also in the axial direction of the stator core 11, thereby expanding the range and precision of magnetic field adjustment. For example, while the sub-adjusting magnetic element 121 moves in a combination of circumferential and radial directions, it can also move in the axial direction of the stator core 11, resulting in a spiral upward or downward movement path for the sub-adjusting magnetic element 121.

[0091] This disclosure also provides another magnetizing structure 1 in some embodiments. Another magnetizing structure 1 in some embodiments of this disclosure is described below.

[0092] As shown in Figures 13, 17, and 18, the magnetic adjustment structure 1 in some embodiments of this disclosure includes a stator core 11 and a magnetic adjustment component. The stator core 11 includes a stator yoke 111 and a stator tooth portion 112. The magnetic adjustment component is movably disposed on the stator yoke 111 and can be moved as a whole to adjust the magnetic flux passing through the stator tooth portion 112.

[0093] The magnetic flux adjustment structure 1 of some embodiments of this disclosure generates a magnetic field around the stator teeth 112 when current passes through the stator winding. The magnetic flux adjustment component, as a whole, can move on the stator yoke 111. When the magnetic flux adjustment component moves on the stator yoke 111, the magnetic flux passing through the stator teeth 112 can be directly adjusted. By moving the magnetic flux adjustment component as a whole, the continuous or segmented adjustment of the magnetic flux can be achieved as the radial facing area between the magnetic flux adjustment component and the stator teeth 112 changes, thereby increasing the range of magnetic flux adjustment and improving the accuracy of magnetic flux adjustment.

[0094] For example, when the area of ​​the magnetic adjustment element facing the stator tooth 112 increases, the magnetic flux path widens, the magnetic reluctance decreases accordingly, and the magnetic flux increases. Conversely, when the area of ​​the magnetic adjustment element facing the stator tooth 112 decreases, the magnetic flux path narrows, the magnetic reluctance increases accordingly, and the magnetic flux decreases.

[0095] Therefore, the magnetic adjustment structure 1 of some embodiments of this disclosure, through the cooperation of the stator core 11 and the magnetic adjustment component, achieves precise and wide-range adjustment of the magnetic flux through the stator teeth 112, thereby optimizing the motor performance and enabling the motor to maintain excellent performance under different operating conditions.

[0096] In some embodiments, the magnetizing structure 1 satisfies at least one of the following: the magnetizing element can move circumferentially along the stator core 11, or the magnetizing element can move radially along the stator core 11. The magnetizing structure 1 does not limit the direction of movement of the magnetizing element. The direction of movement of the magnetizing element can be circumferential, radial, or a combination of circumferential and radial movement.

[0097] In some embodiments, the magnetic adjustment element can move axially along the stator core 11. This allows the magnetic adjustment element to move not only in at least one of the circumferential or radial directions, but also axially, thereby expanding the range and precision of magnetic field adjustment. For example, the magnetic adjustment element can move axially while simultaneously moving in both the circumferential and radial directions, creating a spiral upward or downward movement path.

[0098] In some embodiments, the magnetic adjustment element includes a plurality of sub-magnetic adjustment elements 121, which are movable as a whole to adjust the magnetic flux through the stator teeth 112. The cross-section of each of the plurality of sub-magnetic adjustment elements 121 is formed into a rectangular or arc-shaped shape extending circumferentially along the stator core 11, thereby facilitating the processing and shaping of the sub-magnetic adjustment element 121.

[0099] In some embodiments, the sub-adjusting magnet 121 is disposed axially corresponding to at least a portion of the stator core 11. The axial dimension of the sub-adjusting magnet 121 may be equal to the axial dimension of the stator core 11, or it may be less than or greater than the axial dimension of the stator core 11. In FIG. 16, h represents the axial dimension of the sub-adjusting magnet 121. For example, the ratio of the axial dimension of the sub-adjusting magnet 121 to the axial dimension of the stator core 11 ranges from 10% to 100%. For example, this ratio may be 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, etc.

[0100] In some embodiments, the circumferential dimension of the sub-adjusting magnet 121 can be in the range of (0.3-0.8)×360° / Ns, where Ns is the number of stator slots or stator teeth. The circumferential dimension of the sub-adjusting magnet 121 is the angular range covered by the sub-adjusting magnet 121 along the circumference of the stator core 11. As shown in Figure 16, α represents the circumferential dimension of the sub-adjusting magnet 121. The circumferential dimension of the sub-adjusting magnet 121 directly determines the movable range of the sub-adjusting magnet 121. Therefore, by setting the range of the circumferential dimension of the sub-adjusting magnet 121 to (0.3-0.8)×360° / Ns, while ensuring that the adjusting magnet has a sufficient movable range, the radial facing area change between the adjusting magnet and the stator teeth 112 can also ensure sufficient magnetic field adjustment capability, balancing the range and precision of magnetic field adjustment.

[0101] In some embodiments, the magnetic adjustment component includes a plurality of sub-magnetic adjustment components 121, which are spaced apart circumferentially along the stator core 11. The magnetic adjustment structure 1 also includes at least one magnetic adjustment ring, through which the plurality of sub-magnetic adjustment components 121 are connected. Thus, by having a plurality of sub-magnetic adjustment components 121 spaced apart circumferentially along the stator core 11, the plurality of sub-magnetic adjustment components 121 can simultaneously adjust the magnetic field at different positions, thereby improving magnetic adjustment efficiency and expanding the magnetic adjustment range. By providing a magnetic adjustment ring and connecting the plurality of sub-magnetic adjustment components 121 through the ring, the plurality of sub-magnetic adjustment components 121 can work collaboratively as a whole, achieving synchronous circumferential movement of the plurality of sub-magnetic adjustment components 121, thereby enabling uniform adjustment of the magnetic field on the stator core 11.

[0102] In some embodiments, as shown in Figures 13-16, at least one adjusting ring is configured as a drive ring 123 suitable for connection with the drive member 122. The drive ring 123 drives a plurality of sub-adjusting rings 121 to move synchronously. By providing an annular drive ring 123 and connecting it to the plurality of sub-adjusting rings 121, the rotation of the drive ring 123 can drive the plurality of sub-adjusting rings 121 to move synchronously in the circumferential direction. It is understood that when at least one adjusting ring includes multiple adjusting rings, one of the multiple adjusting rings can be the drive ring 123, all of the adjusting rings can be the drive ring 123, or a portion (more than 2) of the multiple adjusting rings can be the drive ring 123, depending on actual needs.

[0103] In some embodiments, as shown in Figures 15 and 16, in the axial direction of the stator core 11, a drive ring 123 is located on at least one side of the axial direction of a plurality of sub-tuning magnets 121 and is connected to the axial end faces of the plurality of sub-tuning magnets 121 respectively. By connecting the drive ring 123 to the axial end faces of the plurality of sub-tuning magnets 121, the drive ring 123 can not only provide support and positioning for the plurality of sub-tuning magnets 121 in the axial direction, but also provide a circumferential driving force for the sub-tuning magnets 121, so as to reliably drive the plurality of sub-tuning magnets 121 to move synchronously in the circumferential direction. For example, the connection between the drive ring 123 and the axial end face of the sub-adjustment magnet 121 can be achieved through integral molding, welding or other appropriate connection methods. In this way, the drive ring 123 can not only effectively transmit the driving force to the sub-adjustment magnet 121, but also effectively constrain and stabilize the position and attitude of the sub-adjustment magnet 121, which helps to improve the accuracy and stability of the movement of the sub-adjustment magnet 121, thereby achieving the precision and reliability of magnetic field adjustment, enhancing the stability and reliability of motor operation, and providing a guarantee for the high-performance operation of the motor.

[0104] In some embodiments, as shown in Figures 13 and 14, the magnetic adjustment structure 1 further includes a driving member 122, which is connected to a driving ring 123 to drive the driving ring 123 to rotate. The rotation of the driving ring 123 adjusts the circumferential position of the plurality of sub-adjusting magnetic elements 121. When the driving ring 123 is driven by the driving member 122, the driving ring 123 rotates. As the driving ring 123 rotates, the plurality of sub-adjusting magnetic elements 121 move synchronously in the circumferential direction, and the facing area of ​​each sub-adjusting magnetic element 121 and its corresponding stator tooth changes by the same magnitude, achieving uniformity and consistency in the magnetic field distribution.

[0105] It should be noted that Figures 17 and 18 are top views of the magnetic adjustment structure 1 shown in Figure 1 when the sub-magnetic adjustment component 121 is in different positions. The driving component 122 shown in Figures 13 and 14 is not in direct contact with the stator core 11, but when a vertical projection is made from the top of the magnetic adjustment structure 1 along the axial direction in Figures 17 and 18, the projections of the driving component 122 and the stator core 11 overlap.

[0106] In some embodiments, as shown in Figures 15 and 16, at least one adjusting ring includes multiple adjusting rings, each including a drive ring 123 and a fixed ring 124. The fixed ring 124 and drive ring 123 are distributed on both sides of the stator core 11 along its axial direction. By providing the fixed ring 124 and connecting it to the multiple sub-adjusting magnetic elements 121, the fixed ring 124 provides additional support to the sub-adjusting magnetic elements 121, improving their stability. Furthermore, by positioning the fixed ring 124 and drive ring 123 on opposite sides of the stator core 11, the multiple sub-adjusting magnetic elements 121 can move accurately and reliably when driven, thereby achieving more precise and reliable magnetic field adjustment.

[0107] In this way, the fixed ring 124 and the drive ring 123 work together to make the structure of the sub-adjusting magnetic component 121 more compact and stable, capable of withstanding higher workloads and more complex operating environments. Furthermore, the fixed ring 124 and the drive ring 123 are located on opposite sides of the stator core 11, which optimizes the spatial layout of the magnetic adjustment structure 1, reduces the space occupied by the fixed ring 124 and the drive ring 123 in the motor housing, and allows the motor housing to effectively fix and protect the stator core 11.

[0108] In some embodiments, as shown in Figures 13-16, a retaining ring 124 is located on one axial side of a plurality of sub-adjusting magnetic elements 121 and is connected to the axial end faces of the plurality of sub-adjusting magnetic elements 121 respectively. By connecting the retaining ring 124 to the axial end faces of the plurality of sub-adjusting magnetic elements 121, the retaining ring 124 can provide support and positioning for the sub-adjusting magnetic elements 121 in the axial direction. For example, the connection between the retaining ring 124 and the axial end faces of the sub-adjusting magnetic elements 121 can be achieved by integral molding, welding or other suitable connection methods, so that the sub-adjusting magnetic elements 121 can move stably when subjected to driving force, thereby achieving precise adjustment of the magnetic field and enhancing the stability and reliability of motor operation.

[0109] In some embodiments, as shown in FIG13, the outer peripheral wall of the drive ring 123 is provided with an external gear ring 1231, and the drive member 122 includes a magnet-adjusting motor 1211 and a transmission gear 1212. The magnet-adjusting motor 1211 is connected to the transmission gear 1212, and the transmission gear 1212 meshes with the external gear ring 1231. In this way, by providing an external gear ring 1231 on the outer peripheral wall of the drive ring 123, it is convenient for the drive ring 123 to mesh and transmit power with other components. At the same time, the drive member 122 includes a magnet-adjusting motor 1211 and a transmission gear 1212. The magnet-adjusting motor 1211 is configured to provide driving force, while the transmission gear 1212 plays the role of transmitting power. Therefore, by meshing the transmission gear 1212 with the external gear ring 1231, when the magneto motor 1211 is working, the magneto motor 1211 drives the transmission gear 1212 to rotate. The transmission gear 1212 then transmits power to the drive ring 123 by meshing with the external gear ring 1231 on the drive ring 123, thus enabling the drive ring 123 to rotate. Because the external gear ring 1231 and the transmission gear 1212 are meshed, the drive component 122 can directly drive the drive ring 123 to rotate, achieving efficient and stable power transmission, which helps to improve the adjustment accuracy of the magnetic field and optimize the performance of the motor.

[0110] In some embodiments, as shown in Figures 13, 14, and 17, a portion of the transmission gear 1212 is located on the axially outer side of the stator core 11 to mesh with the external gear ring 1231. The transmission gear 1212 and the external gear ring 1231 of the drive ring 123 are positionally corresponding. When the magnetizing motor 1211 drives the transmission gear 1212 to rotate, the transmission gear 1212 can mesh with the external gear ring 1231 to achieve power transmission. Therefore, by placing a portion of the transmission gear 1212 on the axially outer side of the stator core 11, while maintaining meshing between the external gear ring 1231 and the transmission gear 1212, the transmission gear 1212 occupies more space on the axially outer side of the stator core 11, thereby reducing the space occupied by the transmission gear 1212 on the radially outer side of the stator core 11. This makes the magnetizing structure 1 more compact, helps reduce the overall size of the motor housing, and thus saves costs.

[0111] In some embodiments, as shown in Figures 17 and 18, a magnetic adjustment groove 114 is provided within the stator yoke 111, and a sub-magnetic adjustment element 121 is disposed within the magnetic adjustment groove 114. The magnetic adjustment groove 114 provides movable space for the sub-magnetic adjustment element 121, which can reduce the frictional loss of the sub-magnetic adjustment element 121 and thus improve the response speed of the sub-magnetic adjustment element 121. The magnetic adjustment groove 114 extends circumferentially along the stator core 11, allowing the sub-magnetic adjustment element 121 to move circumferentially within the magnetic adjustment groove 114. The circumferential extension of the magnetic adjustment groove 114 provides the sub-magnetic adjustment element 121 with a larger range of movement and adjustment freedom. Furthermore, the movement of the sub-magnetic adjustment element 121 circumferentially along the stator core 11 does not occupy the external space of the stator core 11, making the structure of the magnetic adjustment structure 1 more compact.

[0112] In some embodiments, the radial width of the magnetic adjustment slot 114 in the radial direction of the stator core 11 ranges from 0.5 mm to Y / 2, where Y is the radial width of the stator yoke 111. This facilitates the machining of the magnetic adjustment slot 114 while ensuring the overall structural strength of the stator core 11, and also ensures that the sub-magnetic adjustment component 121 has a suitable radial width to guarantee its structural strength.

[0113] In some embodiments, each sub-stator tooth is provided with a corresponding magnetic adjustment groove 114. The design of the closest distance between the surface of the magnetic adjustment groove 114 and the stator groove 113 should take into account the structural integrity, process feasibility and strength of the stator core 11. Under the premise that the process and strength can be guaranteed, the closer the distance is, the better.

[0114] The distance between two adjacent magnetic adjustment slots 114 in the circumferential direction of the stator core 11 should also take into account the structural integrity, process feasibility and strength of the stator core 11. The circumferential angle occupied by a single magnetic adjustment slot 114 in the circumferential direction of the stator core 11 should not exceed 360° / Ns, where Ns is the number of stator slots or the number of stator teeth.

[0115] The radial thickness of a single magnetic adjustment slot 114 can be from 0.5 mm to Y / 2, where Y is the thickness of the stator yoke 111. This allows for the easy processing of the magnetic adjustment slot 114 while ensuring the overall structural strength of the stator core 11. It also ensures that the sub-magnetic adjustment component 121 has a suitable radial width to guarantee the structural strength of the sub-magnetic adjustment component 121. As shown in Figure 16, d represents the radial width of the sub-magnetic adjustment component 121.

[0116] In some embodiments, there is only one magnetic adjustment slot 114 corresponding to two adjacent sub-stator teeth. The design of the closest distance between the surface of the magnetic adjustment slot 114 and the stator slot 113 should take into account the structural integrity, process feasibility and strength of the stator core 11. Under the premise that the process and strength can be guaranteed, the closer the distance is, the better.

[0117] If a magnetic adjustment slot 114 is provided for each of two adjacent sub-stator teeth, the circumferential angle of the magnetic adjustment slot 114 shall not exceed 360° / (N / 2), where N is the total number of sub-stator teeth or stator slots 113.

[0118] The radial thickness of a single magnetic adjustment slot 114 can be from 0.5mm to Y / 2, which facilitates the processing of the magnetic adjustment slot 114 while ensuring the overall structural strength of the stator core 11, and also allows the sub-magnetic adjustment component 121 to have a suitable radial width to ensure the structural strength of the sub-magnetic adjustment component 121.

[0119] In some embodiments, as shown in Figures 17 and 18, the stator tooth portion 112 includes a plurality of sub-stator teeth portions. Two adjacent sub-stator teeth portions define a stator slot 113. Each stator slot 113 is provided with a corresponding magnetic adjustment slot 114. The plurality of magnetic adjustment slots 114 and the plurality of sub-magnetic adjustment elements 121 are arranged in a one-to-one correspondence. The stator slot 113 provides installation space for the stator winding, allowing the stator winding to be wound tightly and orderly on the stator tooth portion 112. When current passes through the stator winding, a magnetic field is generated around the stator tooth portion 112. The magnetic field on the magnetic adjustment structure 1 interacts with the magnetic field on the rotor, thereby realizing the rotation of the motor.

[0120] By providing a corresponding magnetic adjustment slot 114 for each stator slot 113, and each magnetic adjustment slot 114 containing a movable sub-magnetic adjustment element 121, when multiple sub-magnetic adjustment elements 121 move synchronously in the circumferential direction, each sub-magnetic adjustment element 121 can move within its corresponding magnetic adjustment slot 114, jointly adjusting the magnetic field distribution inside the motor. This allows for a greater degree of change in the motor's magnetic flux, thereby achieving efficient regulation of motor performance. Furthermore, the participation of more sub-magnetic adjustment elements 121 in flux regulation expands the range of motor flux adjustment, enabling adjustments to the motor's magnetic field distribution and flux magnitude over a wider range, thus achieving more precise and comprehensive regulation of motor performance.

[0121] In some embodiments, the stator tooth portion 112 includes a plurality of sub-stator teeth portions, and two adjacent sub-stator teeth portions define a stator slot 113. That is, a portion of the stator slots 113 are provided with magnetizing slots 114, while another portion of the stator slots 113 are not provided with magnetizing slots 114. The magnetizing slots 114 are evenly spaced along the circumference of the stator core 11. It should be noted that on the stator core 11, each stator slot 113 may be provided with a magnetizing slot 114, or a portion of the stator slots 113 may be provided with magnetizing slots 114. However, the magnetizing slots 114 need to be evenly distributed along the circumference of the stator core 11 to achieve uniformity of magnetic field adjustment.

[0122] For example, the total number of stator slots 113 is N, and the number of stator slots 113 with magnetizing slots 114 is N / 2, that is, one magnetizing slot 114 is set every other stator slot 113. Or, the total number of stator slots 113 is N, and the number of stator slots 113 with magnetizing slots 114 is N / 3, that is, one magnetizing slot 114 is set every two stator slots 113.

[0123] In some embodiments, as shown in Figures 19 and 20, the magnetizing element may have a first state and a second state. In the first state, the magnetizing element is radially aligned with the stator teeth 112. In the second state, the magnetizing element is radially aligned with the stator slots 113.

[0124] In the first state, the magnetic adjustment element and the stator tooth 112 are radially aligned. At this time, the gap between the magnetic adjustment element and the stator tooth 112 is the smallest, the magnetic flux path reaches its widest state, and the magnetic resistance is relatively low, thereby allowing the magnetic circuit to pass through a larger magnetic field.

[0125] In the second state, the magnetic adjustment component is radially aligned with the stator slot 113, that is, the magnetic adjustment component is misaligned with the stator tooth 112. At this time, the magnetic flux path is the narrowest and the magnetic resistance is relatively high, thus allowing a smaller magnetic field to pass through the magnetic circuit.

[0126] The forward and reverse rotation of the magnet-adjusting motor 1211 allows the magnet-adjusting component to switch between the first and second states, thereby achieving continuous and precise adjustment of the magnetic field. By controlling the forward or reverse rotation of the magnet-adjusting motor 1211, the position of the magnet-adjusting component on the stator core 11 can be precisely controlled, enabling the magnet-adjusting component to smoothly switch between the first and second states. During the switching process, by controlling the degree of misalignment between the magnet-adjusting component and the stator teeth 112, continuous adjustment of the motor's magnetic flux can be achieved, meeting different operating requirements and ensuring that the motor maintains optimal performance under different workloads and conditions, thus improving the motor's operating efficiency and reliability.

[0127] In some embodiments, the magnetic adjustment slot 114 is disposed near the stator teeth 112. The stator teeth 112 is the region in the motor magnetic circuit most prone to saturation. By disposing the magnetic adjustment slot 114 in the stator yoke 111 and adjacent to the stator teeth 112, the magnetic adjustment element can move within the magnetic adjustment slot 114 to effectively adjust the magnetic reluctance of the magnetic circuit near the stator teeth 112, allowing more magnetic flux to pass through the stator teeth 112. This enables a wide range of adjustment of the motor magnetic flux, thereby enhancing the motor's performance and enabling the motor to adapt to different operating conditions and requirements.

[0128] The motor 10 of some embodiments of this disclosure is briefly described below.

[0129] Referring to FIG21, the motor 10 of some embodiments of the present disclosure includes the above-described magnetizing structure 1. Since the motor 10 of some embodiments of the present disclosure includes the above-described magnetizing structure 1, the motor 10 of some embodiments of the present disclosure can achieve fine adjustment of the magnetic flux by moving the magnetizing component, thereby optimizing the performance of the motor 10 to meet different operating requirements. The magnetizing component effectively adjusts the permanent magnet magnetic field, thereby enabling real-time control of the no-load back EMF of the motor 10, which helps the motor 10 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 hybrid vehicle more powerful when driving at low speeds. In the high-speed range, by reducing the no-load back EMF, core losses can be reduced, the constant power range can be widened, peak torque and power can be increased, and it also helps to prevent the inverter from being damaged due to overvoltage.

[0130] In some embodiments of this disclosure, the motor 10 can be either a generator or a drive motor. When the motor 10 in some embodiments of this disclosure is a generator, the magnetic flux can be adjusted by moving the magnetic adjustment component, thereby optimizing power generation performance and improving power generation efficiency. When the motor 10 in some embodiments of this disclosure is a drive motor, the output torque and speed of the motor 10 can be controlled by moving the magnetic adjustment component to adjust the magnetic flux, thereby meeting the power requirements under various complex working conditions.

[0131] The electric drive system 100 of some embodiments of this disclosure is briefly described below.

[0132] Referring to FIG22, the electric drive system 100 of some embodiments of the present disclosure includes the motor 10 described above. Since the electric drive system 100 of some embodiments of the present disclosure includes the motor 10 described above, the electric drive system 100 of some embodiments of the present disclosure can achieve fine adjustment of magnetic flux by moving the magnetic adjustment element circumferentially along the stator core 11, so that the motor 10 can maintain optimal operation under various operating conditions, thereby providing more efficient and reliable power output.

[0133] The vehicle 1000 of some embodiments of this disclosure is briefly described below.

[0134] Referring to FIG23, the vehicle 1000 of some embodiments of the present disclosure includes the above-described electric drive system 100. Because the vehicle 1000 of some embodiments of the present disclosure includes the above-described electric drive system 100, the vehicle 1000 can adjust the no-load back EMF in real time according to different working requirements, thereby optimizing driving performance. Furthermore, the magnetic adjustment structure 1 of some embodiments of the present disclosure can reuse the existing hydraulic system on the vehicle. By reusing the hydraulic fluid of the vehicle 1000 or the powertrain, no additional power source is required. The system operating point can be optimized in real time according to working conditions, improving system efficiency. It is also low-cost, has low losses, and can be applied to all hydraulic system vehicle models.

[0135] In addition, in some embodiments of this disclosure, the vehicle 1000 only requires additional power when adjusting the magnetic field. The system operating point can be optimized in real time according to the operating conditions, and the performance optimization and efficiency improvement effect of adjusting the magnetic field is more significant, thereby reducing the power consumption of the entire vehicle system.

[0136] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," 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 some embodiments or examples 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.

[0137] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic structure (1), comprising: a stator core (11), the stator core (11) comprising a stator yoke portion (111) and a stator tooth portion (112); and a magnetic adjusting member movably arranged on the stator yoke portion (111), at least part of the magnetic adjusting member being movable to adjust a magnetic flux passing through the stator tooth portion (112). The at least part of the magnetic adjusting member is axially symmetrically and evenly distributed on the stator core (11).

2. The magnetic structure of claim 1, wherein, 3. The magnetic structure (1) according to claim 1 or 2, further comprising a driving member (122) configured to drive the at least part of the magnetic adjusting member to move. The stator yoke portion (111) is provided with a plurality of magnetic adjusting grooves (114), the magnetic adjusting member (121) comprises a plurality of sub magnetic adjusting members (121), one of the plurality of sub magnetic adjusting members (121) is arranged in each of the plurality of magnetic adjusting grooves (114), and the magnetic adjusting groove (114) is provided with a first chamber and a second chamber located at two ends of the corresponding sub magnetic adjusting member (121) in the circumferential direction of the stator core (11).

4. The field-shaping structure (1) of claim 3, wherein The driving member (122) is configured to adjust the hydraulic pressure in at least one of the first chamber or the second chamber to adjust the position of the corresponding sub magnetic adjusting member (121) in the circumferential direction of the stator core (11). The driving member (122) comprises an oil passage channel arranged in the stator core (11), the oil passage channel is in communication with the first chamber and the second chamber respectively, and the oil passage channel is configured to adjust the oil pressure in the first chamber and the second chamber.

5. The field-shaping structure (1) of claim 4, wherein The driving member (122) comprises an oil passage channel arranged in the stator core (11) and an elastic member (1221), the oil passage channel is in communication with the first chamber to adjust the oil pressure in the first chamber, and the elastic member (1221) is arranged in the second chamber and connected with the corresponding sub magnetic adjusting member (121).

6. The field-shaping structure (1) of claim 4, wherein Each of the plurality of sub magnetic adjusting members (121) can have a first state and a second state, in the first state, the first chamber has a first oil amount, and the sub magnetic adjusting member (121) is arranged opposite to the stator tooth portion (112); 7. The field-shaping structure (1) of claim 6, wherein In the second state, the first chamber has a second oil amount, the sub magnetic adjusting member (121) is arranged in a staggered manner with the stator tooth portion (112), and the first oil amount is less than the second oil amount. Each of the plurality of sub magnetic adjusting members (121) is correspondingly provided with a plurality of elastic members (1221), and in the axial direction of the stator core (11), the plurality of elastic members (1221) are connected with the corresponding sub magnetic adjusting member (121).

8. The field-shaping structure (1) according to claim 6 or 7, wherein ​ 9. The magnetizing structure (1) according to any one of claims 6-8 further includes a plurality of bases (13), each of the plurality of bases (13) being disposed in a corresponding magnetizing groove (114); the first end of the elastic member (1221) is connected to the corresponding sub-magnetizing member (121), and the second end of the elastic member (1221) is connected to the corresponding base (13).

10. The field-shaping structure (1) of claim 9, wherein The base (13) has a receiving cavity that is open on one side along the axial direction of the stator core (11), and the sub-tuning magnet (121) and the elastic element (1221) connected thereto are disposed in the receiving cavity.

11. The field-shaping structure (1) of claim 10, wherein The base (13) is provided with an oil port communicating with the receiving cavity, and the oil port is located on the outer side wall of the receiving cavity along the radial direction of the stator core (11).

12. The magnetic adjustment structure (1) according to any one of claims 5-11 further includes a housing (14), wherein the stator core (11) is disposed in the housing (14), and the housing (14) is provided with an axial guide oil hole (141), wherein the axial guide oil hole (141) is connected to the oil passage of the drive member (122).

13. The field-shaping structure (1) according to any one of claims 5-12, wherein The stator core (11) includes a plurality of stator laminations (115) stacked along the axial direction of the stator core (11), and at least a portion of the plurality of stator laminations (115) are provided with the oil passage.

14. The magnetic structure (1) according to claim 13, wherein The plurality of stator laminations (115) include at least two first laminations (1151) and a second lamination (1152), and the oil passage is provided in the at least two first laminations (1151); The oil passage includes a first oil guide channel (1222) and a second oil guide channel (1223) arranged circumferentially along the stator core (11). At least two adjacent first laminations (1151) are staggered by a predetermined angle circumferentially along the stator core (11) so that the first oil guide channel (1222) of one of the two adjacent first laminations (1151) is connected to the second oil guide channel (1223) of the other one of the two adjacent first laminations (1151) in both the axial and radial directions of the stator core (11).

15. The magnetizing structure (1) according to claim 14, wherein, The first oil guide channel (1222) includes a plurality of first slots arranged radially at intervals along the stator core (11). The first slot located at the innermost radial end of the stator (11) is connected to at least one of the first chamber or the second chamber, and the first slot located at the outermost radial end of the stator (11) is connected to the outer periphery of the corresponding first lamination (1151). The second oil guide channel (1223) is configured to connect the different first slots on two adjacent first laminations (1151).

16. The magnetic structure (1) according to claim 15, wherein The first plurality of slots comprises a first slot (1222a), an intermediate slot (1222b) and a second slot (1222c) arranged in sequence and spaced apart in the radial direction of the stator core (11), the first slot (1222a) is provided with an opening located at the outer circumferential edge of the corresponding first lamination (1151), and the second slot (1222c) is in communication with the first cavity; The second oil guide channel (1223) comprises at least two communication slots (1223a) arranged in the radial direction of the stator core (11); The two adjacent first laminations (1151) are arranged in a staggered manner, so that the first slot (1222a) and the intermediate slot (1222b) in one of the first laminations (1151) are in communication through one of the at least two communication slots (1223a) of the adjacent other first lamination (1151), and the intermediate slot (1222b) and the second slot (1222c) in one of the first laminations (1151) are in communication through the other of the at least two communication slots (1223a) of the adjacent other first lamination (1151).

17. The field-shaping structure (1) according to any one of claims 4-16, wherein The flux modulation slot (114) is arranged adjacent to the stator tooth portion (112).

18. The field-shaping structure (1) according to any one of claims 4-17, wherein The flux modulation slot (114) extends in the circumferential direction of the stator core (11).

19. The field-shaping structure (1) of claim 18, wherein The cross section of each of the plurality of sub flux modulation members (121) is formed in a rectangular or arc shape extending in the circumferential direction of the stator core (11).

20. The field-shaping structure (1) according to claim 18 or 19, wherein The circumferential dimension of each of the plurality of sub flux modulation members (121) ranges from (0.3-0.8)×360° / Ns, where Ns is the number of stator slots or the number of stator teeth.

21. The field-shaping structure (1) according to any one of claims 4-20, wherein In the radial direction of the stator core (11), the radial width of the flux modulation slot (114) ranges from 0.5mm to Y / 2, where Y is the radial width of the stator yoke portion (111).

22. The flux modulation structure (1) according to any one of claims 1-12, further satisfying at least one of: Each of the sub flux modulation members (121) of the flux modulation member is movable in the circumferential direction of the stator core (11); or Each of the sub flux modulation members (121) of the flux modulation member is movable in the radial direction of the stator core (11).

23. The field-shaping structure (1) according to claim 22, wherein The sub flux modulation member (121) is movable in the axial direction of the stator core (11).

24. The flux modulation structure (1) according to claim 1, The flux modulation member is integrally movable to adjust the magnetic flux passing through the stator tooth portion (112).

25. The flux modulation structure (1) according to claim 24, further satisfying at least one of: The flux modulation member is movable in the circumferential direction of the stator core (11); or The flux modulation member is movable in the radial direction of the stator core (11).

26. The field-shaping structure (1) of claim 25, wherein The flux modulation member is movable in the axial direction of the stator core (11).

27. The field-shaping structure (1) according to any one of claims 24-26, wherein The magnetic adjusting member comprises a plurality of sub magnetic adjusting members (121), and a cross section of each of the plurality of sub magnetic adjusting members (121) is formed as an oblong or arc shape extending along a circumferential direction of the stator core (11).

28. The field-shaping structure (1) of claim 27, wherein A circumferential dimension of the sub magnetic adjusting member (121) ranges from (0.3-0.8)×360° / Ns, where Ns is a number of stator slots or a number of stator teeth.

29. The field-shaping structure (1) according to any one of claims 24-28, wherein The magnetic adjusting member (121) comprises a plurality of sub magnetic adjusting members (121) arranged at intervals along a circumferential direction of the stator core (11). The magnetic adjusting structure further comprises at least one magnetic adjusting ring, and the plurality of sub magnetic adjusting members (121) are connected by the at least one magnetic adjusting ring.

30. The field-shaping structure (1) of claim 29, wherein The at least one magnetic adjusting ring is configured as a driving ring (123) adapted to be connected with a driving member (122), and the driving ring (123) drives the plurality of sub magnetic adjusting members (121) to move synchronously.

31. The field-shaping structure (1) of claim 30, wherein In an axial direction of the stator core (11), the driving ring (123) is located on at least one side of the plurality of sub magnetic adjusting members (121) in the axial direction and is connected with axial end faces of the plurality of sub magnetic adjusting members (121), respectively.

32. The magnetic adjusting structure (1) according to claim 31, further comprising the driving member (122) connected with the driving ring (123) to drive the driving ring (123) to rotate, and the driving ring (123) rotates to adjust circumferential positions of the plurality of sub magnetic adjusting members (121).

33. The field-shaping structure (1) of claim 32, wherein An outer peripheral wall of the driving ring (123) is provided with an outer gear ring (1231), the driving member (122) comprises a magnetic adjusting motor (1211) and a transmission gear (1212), the magnetic adjusting motor (1211) is connected with the transmission gear (1212), and the transmission gear (1212) is engaged with the outer gear ring (1231).

34. The field-shaping structure (1) of claim 33, wherein A part of the transmission gear (1212) is located on an axial outside of the stator core (11) to be engaged with the outer gear ring (1231).

35. The field-shaping structure (1) according to any one of claims 30-34, wherein The at least one magnetic adjusting ring comprises a plurality of magnetic adjusting rings, and the plurality of magnetic adjusting rings comprise the driving ring (123) and a fixed ring (124), and the fixed ring (124) and the driving ring (123) are distributed on both sides of the stator core (11) in the axial direction.

36. The field-shaping structure (1) of claim 35, wherein In the axial direction of the stator core (11), the fixed ring (124) is located on one side of the plurality of sub magnetic adjusting members (121) in the axial direction and is connected with axial end faces of the plurality of sub magnetic adjusting members (121), respectively.

37. The field-shaping structure (1) according to any one of claims 24-36, wherein The stator yoke (111) is provided with a magnetic adjusting slot (114) extending along a circumferential direction of the stator core (11), and the magnetic adjusting member is arranged in the magnetic adjusting slot (114).

38. The field-shaping structure (1) according to claim 37, wherein In a radial direction of the stator core (11), a radial width of the magnetic adjusting slot (114) ranges from 0.5mm to Y / 2, where Y is a radial width of the stator yoke (111).

39. The field-shaping structure (1) according to claim 37 or 38, wherein The magnetic adjusting member includes a plurality of sub magnetic adjusting members (121), the stator tooth portion (112) includes a plurality of sub stator tooth portions, two adjacent sub stator tooth portions in the plurality of sub stator tooth portions define a stator slot (113), each of the plurality of stator slots (113) is provided with the magnetic adjusting slot (114) in correspondence, and the plurality of magnetic adjusting slots (114) and the plurality of sub magnetic adjusting members (121) are one-to-one correspondence.

40. The field-shaping structure (1) according to claim 37 or 38, wherein The stator tooth portion (112) includes a plurality of sub stator tooth portions, two adjacent sub stator tooth portions in the plurality of sub stator tooth portions define a stator slot (113), a part of the plurality of stator slots (113) is provided with the magnetic adjusting slot (114) in correspondence, and the plurality of magnetic adjusting slots (114) are uniformly spaced along the circumference of the stator core.

41. The field-shaping structure (1) according to claim 39 or 40, wherein The magnetic adjusting member can have a first state and a second state, in the first state, the plurality of sub magnetic adjusting members (121) are arranged in radial direct correspondence with the plurality of sub stator tooth portions; In the second state, the plurality of sub magnetic adjusting members (121) are arranged in radial direct correspondence with the stator slot (113).

42. The field-shaping structure (1) according to any one of claims 37-41, wherein The magnetic adjusting slot (114) is arranged close to the stator tooth portion (112).

43. An electric machine (10) comprising the magnetic adjusting structure (1) according to any one of claims 1-42.

44. A vehicle (1000) comprising an electric drive system (100), the electric drive system (100) comprising the electric machine (10) according to claim 43.

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