Iron core, rotor, stator, motor, suspension system and vehicle

Abstract

An iron core, a rotor, a stator, a motor, a suspension system and a vehicle, the iron core comprises a magnetizer and a spacer, the magnetizer comprises a body and a first boss, the first boss is convexly arranged at one end of the body along the axial direction, and the body is provided with an accommodating groove; and the spacer is accommodated in the accommodating groove. According to the invention, the magnetizer is provided with the accommodating groove, the accommodating groove is used for accommodating the spacers, and the spacers are arranged in the magnetizer, so that the iron core is divided into a plurality of parts. When magnetic flux passes through the iron core, the eddy current generated by the changing magnetic flux is limited in the magnetizer and the spacer, so that the eddy current caused by the magnetic flux change can be effectively reduced, the eddy current loss of the iron core is reduced, and the efficiency of the motor can be improved.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an iron core, a rotor, a stator, a motor, a suspension system and a vehicle. Background Art

[0002] The motor includes the electric motor and the generator. It is a device that realizes the mutual conversion between electrical energy and mechanical energy and has been widely used in various industries. The motor mainly consists of two parts: the stator and the rotor. Both the stator and the rotor include an iron core. When the motor is powered on, a changing magnetic flux will be generated in the iron core. Since the iron core is a magnetic conductor, the changing magnetic flux will produce electromagnetic induction in the iron core, thereby forming a self-closed current loop inside the iron core. This form of current is called eddy current.

[0003] In the prior art, when eddy current passes through the iron core, a large amount of heat energy is generated inside the iron core, resulting in serious eddy current loss of the iron core and low motor efficiency. Utility Model Content

[0004] The purpose of the present application is to provide an iron core, a rotor, a stator, a motor, a suspension system and a vehicle to solve the problems of severe eddy current loss in the iron core and low efficiency of the motor.

[0005] To achieve the purpose of this application, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides an iron core, comprising:

[0007] A magnetic conductor, the magnetic conductor comprises a body and a first boss, the first boss is convexly arranged on one end of the body along the axial direction, and the body is provided with a receiving groove;

[0008] A spacer is received in the receiving groove.

[0009] In combination with the first aspect, in a possible implementation, the first boss is arranged around the radial inner wall of the body, and the radial outer wall of the first boss is used for winding a winding.

[0010] In combination with the first aspect, in a possible implementation manner, the diaphragm and the magnetic conductor are insulated from each other.

[0011] In combination with the first aspect, in a possible implementation manner, an insulating layer is provided between the groove wall of the accommodating groove and the outer surface of the spacer.

[0012] In combination with the first aspect, in a possible implementation manner, the insulating layer is provided on a groove wall of the receiving groove or an outer surface of the partition.

[0013] In combination with the first aspect, in a possible implementation, the accommodating groove extends in the radial direction of the magnetic conductor, the length direction of the diaphragm is in the same direction as the radial direction of the magnetic conductor, and the width direction of the diaphragm is in the same direction as the axial direction of the magnetic conductor.

[0014] In combination with the first aspect, in a possible implementation manner, a radial side wall of the body or an end surface of the body along the axial direction is recessed to form the accommodation groove.

[0015] In combination with the first aspect, in a possible implementation, the accommodating groove passes through the body along the axial direction of the magnetic conductor, one end face of the spacer is flush with one end face of the body along the axial direction, and the other end face of the spacer is flush with the other end face of the body along the axial direction.

[0016] In combination with the first aspect, in a possible implementation manner, the spacer and the receiving groove are interference fit.

[0017] In combination with the first aspect, in a possible implementation, a plurality of the spacers are provided, and a plurality of the receiving grooves are provided on the main body at intervals along the circumference of the magnetic conductor, and each of the receiving grooves receives at least one spacer. In combination with the first aspect, in a possible implementation, the plurality of receiving grooves are evenly distributed along the circumference of the magnetic conductor.

[0018] In combination with the first aspect, in a possible implementation manner, the thickness of each of the spacers is less than 1 mm.

[0019] In combination with the first aspect, in a possible implementation, the magnetic conductor further includes a second boss, the second boss is disposed on an end of the body axially away from the first boss, and the second boss is used for winding a winding.

[0020] In a second aspect, the present application further provides a rotor, comprising a plurality of iron cores as described in the first aspect, wherein the plurality of iron cores are stacked.

[0021] In a third aspect, the present application further provides a stator, comprising a winding and a plurality of iron cores, wherein the winding is wound on the radial outer wall of the first boss and connected to the radial outer wall of the first boss.

[0022] In combination with the third aspect, in a possible implementation, a plurality of the iron cores are stacked.

[0023] In a fourth aspect, the present application further provides a motor, comprising the rotor as described in the second aspect or the stator as described in the third aspect.

[0024] In a fifth aspect, the present application also provides a suspension system, which includes the motor as described in the fourth aspect.

[0025] In a sixth aspect, the present application also provides a vehicle, comprising the motor as described in the fourth aspect or the suspension system as described in the fifth aspect.

[0026] In the present application, the magnetic conductor includes a body and a first boss. A receiving groove is provided on the body, the receiving groove is used to receive the spacer, and the first boss is used to wind the winding; the spacer is provided in the body, so that the iron core is divided into multiple parts. When magnetic flux passes through the iron core, the eddy current generated by the changing magnetic flux is confined in the magnetic conductor and the spacer, respectively, which will effectively reduce the eddy current caused by the change of magnetic flux, reduce the eddy current loss of the iron core, and improve the efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A three-dimensional diagram of an iron core according to an embodiment of the present application;

[0029] Figure 2 A cross-sectional view of an iron core according to an embodiment of the present application;

[0030] Figure 3 An exploded view of an iron core according to an embodiment of the present application;

[0031] Figure 4 This is a schematic structural diagram of a separator according to an embodiment of the present application;

[0032] Figure 5 A three-dimensional diagram of an iron core according to another embodiment of the present application;

[0033] Figure 6 A cross-sectional view of an iron core according to another embodiment of the present application;

[0034] Figure 7 A schematic diagram of the structure of a main body of an implementation method of the present application;

[0035] Figure 8 A top view of an iron core according to an embodiment of the present application;

[0036] Fig. 9 This is a cross-sectional view of the core at AA according to one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, iron core; 110, magnetic conductor; 111, receiving groove; 112, end face; 113, main body; 114, first boss; 115, second boss; 120, spacer; 130, insulating shell. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0042] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] The present application provides a vehicle, which includes a frame, a power battery, a motor and a suspension system, wherein the power battery and the motor are mounted on the frame. The power battery is the main energy source of the vehicle and is used to store and release electrical energy. The motor can be a driving motor of the vehicle or used in a suspension system, and the power battery provides electrical energy to the driving motor to drive the vehicle; the wheels are connected to the frame through the suspension system, and during the driving of the vehicle, the unevenness of the road surface will cause vibration of the vehicle, which is transmitted to the suspension system through the wheels, and the suspension system is adjusted by the motor to achieve shock absorption of the vehicle.

[0044] For hybrid vehicles, the vehicle also includes an engine, and the motor can be a generator. The power output by the engine can be transmitted to the generator, and the electric energy output by the generator is used to charge the power battery to increase the vehicle's cruising range.

[0045] The present application provides a motor, which includes a winding and an iron core, and the winding is wound on the iron core. The winding is wound by copper wire or aluminum wire, and is wound on the iron core according to a certain number of turns and winding form. The function of the winding is to realize the conversion and transmission of electric energy. When the current passes through the winding, a magnetic field is generated in the iron core, thereby forming a magnetic flux. The motor includes a radial flux motor and an axial flux motor. The radial flux motor refers to a motor in which the magnetic flux flows along the radial direction of the iron core, and its winding is wound radially around the iron core, thereby forming a radial magnetic flux in the iron core. The axial flux motor refers to a motor in which the magnetic flux is parallel to the axial direction of the iron core, that is, the magnetic flux flows along the axial direction of the iron core.

[0046] The motor includes a stator and a rotor. The stator is fixed to the housing and the rotor is contained in the stator. The rotating magnetic field generated by the stator causes the rotor to rotate. Both the stator and the rotor include an iron core. When the motor is powered on, a changing magnetic flux is generated in the iron core. Since the iron core is a magnetic conductor, the changing magnetic flux will generate electromagnetic induction in the iron core, thereby forming a self-closed current loop inside the iron core. This current form is called eddy current.

[0047] In the prior art, when eddy current passes through the iron core, a large amount of heat energy is generated inside the iron core, resulting in serious eddy current loss of the iron core and low motor efficiency.

[0048] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a three-dimensional diagram of an iron core according to an embodiment of the present application. Figure 2 A cross-sectional view of an iron core according to an embodiment of the present application; Figure 3 This is an exploded view of an iron core according to an embodiment of the present application. Figure 4 This is a schematic diagram of the structure of a spacer in one embodiment of the present application. The present application provides an iron core 100, including a magnetizer 110 and a spacer 120. The magnetizer 110 includes a body 113 and a first boss 114. The body 113 is provided with a receiving groove 111; the spacer 120 is received in the receiving groove 111. In the present application, the magnetizer 110 is arranged in an annular shape as a whole. The receiving groove 111 provided on the body 113 is used to receive the spacer 120. By providing the spacer 120 in the body 113, the iron core 100 is divided into multiple parts. The first boss 114 is used to wind the winding. When the winding is energized, a magnetic flux passes through the iron core 100. The eddy current generated by the changing magnetic flux is respectively confined in the magnetizer 110 and the spacer 120, which will effectively reduce the eddy current caused by the change of magnetic flux, reduce the eddy current loss of the iron core 100, and improve the efficiency of the motor.

[0049] The first boss 114 is arranged around the radial inner wall of the body 113, that is, the first boss 114 is arranged in an annular shape. The area between an end surface of the body 113 in the axial direction and the radial outer wall of the first boss 114 forms an accommodating space for accommodating the winding, and the winding is wound on the radial outer wall of the first boss 114 and connected to the radial outer wall of the first boss 114, so as to facilitate the installation of the winding.

[0050] In a possible implementation, the receiving groove 111 extends into the region of the first boss 114 , that is, the spacer 120 is also accommodated in the first boss 114 to further separate the magnetic conductor 110 and reduce the influence of the magnetic flux on the iron core 100 .

[0051] When the iron core 100 provided in the present application is applied to a stator, the rotor includes a plurality of iron cores 100 , the plurality of iron cores 100 are stacked, and the winding is disposed between two adjacent iron cores 100 .

[0052] When the iron core 100 provided in the present application is applied to a rotor, the rotor includes a plurality of iron cores 100 , and the plurality of iron cores 100 are stacked to enhance the magnetic conductivity of the rotor as a whole and improve the motor power.

[0053] refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 The magnetizer 110 also includes a second boss 115, which is protruding from one end of the main body 113 axially away from the first boss 114. Both the first boss 114 and the second boss 115 can be used to install windings. The spacer 120 can be embedded in the main body 113, the first boss 114 and the second boss 115 to circumferentially separate the magnetizer 110 as a whole.

[0054] Specifically, the shape of the spacer 120 is similar to the cross-sectional shape of the magnetizer 110 parallel to the axial direction of the magnetizer 110 , so as to match the magnetizer 110 with the corresponding cross-sectional shape.

[0055] Specifically, the magnetizer 110 can be made of magnetic material through powder metallurgy and other processes to form an integral annular structure, which is easy to manufacture; the diaphragm 120 can be made of a sheet structure through stamping and other processes. The material of the magnetizer 110 and the diaphragm 120 can be one of silicon steel, iron alloy, aluminum, and stainless steel. Among them, the magnetizer 110 and the diaphragm 120 can use the same magnetic material or different magnetic materials, which has strong selectivity.

[0056] In the iron core 100 provided in the present application, the diaphragm 120 is insulated from the magnetizer 110. When the diaphragm 120 is accommodated in the body 113, the diaphragm 120 is insulated from the body 113; when the diaphragm 120 is accommodated in the body 113 and the first boss 114, the diaphragm 120 is insulated from the body 113 and the first boss 114. Specifically, an insulating layer is provided between the groove wall of the accommodating groove 111 and the outer surface of the diaphragm 120. The insulating layer can be insulating paint or insulating paper to electrically insulate the magnetizer 110 from the diaphragm 120, which can effectively isolate the current path between the magnetizer 110 and the diaphragm 120, thereby reducing the influence of the magnetic flux on the iron core 100.

[0057] In the iron core 100 provided in the present application, the insulating layer is arranged on the groove wall of the receiving groove 111 or the outer surface of the partition 120, that is, the insulating layer can be coated and pasted on the groove wall of the receiving groove 111 or the outer surface of the partition 120 by brushing, spraying, dipping, pasting, etc., which can achieve electrical insulation between the magnetic conductor 110 and the partition 120.

[0058] Preferably, the insulating layer is coated on the outer surface of the spacer 120 . Compared with coating the insulating layer on the wall of the narrow receiving groove 111 , arranging the insulating layer on the outer surface of the spacer 120 is easier to process and manufacture.

[0059] In the iron core 100 provided in the present application, the spacer 120 is interference fit with the receiving groove 111, and the spacer 120 is received in the receiving groove 111 of the magnetic conductor 110, and can prevent the spacer 120 from escaping from the receiving groove 111, so that the overall structure of the iron core 100 is compact and the space utilization rate is high.

[0060] refer to Figure 3 and Figure 4 The receiving groove 111 extends along the radial direction of the magnetizer 110, thereby dividing the core 100 into multiple parts in the circumferential direction. Specifically, the length direction of the spacer 120 is in the same direction a as the radial direction of the magnetizer 110, and the width direction of the spacer 120 is in the same direction b as the axial direction of the magnetizer 110. When the winding is energized, radial magnetic flux passes through the core 100, and the eddy current generated by the changing magnetic flux is respectively confined in the mutually insulated magnetizer 110 and spacer 120, which will effectively reduce the eddy current caused by the change of radial magnetic flux, reduce the eddy current loss of the core 100, and improve the efficiency of the motor.

[0061] In one embodiment, the end face 112 at one axial end of the magnetizer 110 is recessed to form a receiving groove 111. Specifically, the magnetizer 110 includes two end faces 112 that are opposite to each other in the axial direction of the magnetizer 110. The receiving groove 111 is formed by recessing one of the end faces 112 so that the receiving groove 111 extends along the axial direction of the magnetizer 110, thereby forming a receiving groove 111 extending along the axial direction and radial direction of the magnetizer 110. The spacer 120 is accommodated in the receiving groove 111, thereby circumferentially separating the magnetizer 110 and reducing the influence of the magnetic flux on the iron core 100.

[0062] In a possible implementation, the receiving groove 111 penetrates the magnetizer 110 in the axial direction of the magnetizer 110, and one end face 112 of the diaphragm 120 is flush with one end face 112 of the magnetizer 110 in the axial direction, and the other end face 112 of the diaphragm 120 is flush with the other end face 112 of the magnetizer 110 in the axial direction. The receiving groove 111 penetrates the magnetizer 110 in the axial direction, so that the diaphragm 120 completely separates the magnetizer 110 in the axial direction of the magnetizer 110, further reducing the influence of the magnetic flux on the iron core 100. It should be noted that the diaphragm 120 can also extend out of the receiving groove 111 in the axial direction of the magnetizer 110, and can also achieve the complete separation of the magnetizer 110 in the axial direction of the magnetizer 110.

[0063] Optionally, the magnetizer 110 includes a radial outer wall and a radial inner wall spaced apart in the radial direction of the magnetizer 110, and the receiving groove 111 is formed by a depression of the radial outer wall or the radial inner wall of the magnetizer 110. That is, the spacer 120 can be embedded in the magnetizer 110 from the radial outer wall or the radial inner wall of the magnetizer 110, and the spacer 120 can also separate the magnetizer 110.

[0064] In the iron core 100 provided in the present application, a plurality of spacers 120 are provided, and a plurality of receiving grooves 111 are provided on the magnetizer 110 at intervals along the circumferential direction of the magnetizer 110, and at least one spacer 120 is accommodated in each receiving groove 111. Specifically, by embedding a plurality of spacers 120 in the circumferential direction of the magnetizer 110, the iron core 100 as a whole is divided into a plurality of parts in the circumferential direction, so as to further reduce the influence of the magnetic flux on the iron core 100.

[0065] The distance between two adjacent spacers 120 gradually increases from inside to outside in the radial direction of the magnetizer 110, so that a plurality of spacers 120 are distributed at intervals along the circumferential direction of the magnetizer 110, thereby dividing the core 100 as a whole into a plurality of parts in the circumferential direction.

[0066] Preferably, the number of the accommodating grooves 111 and the spacers 120 corresponds one to one, and the plurality of accommodating grooves 111 are evenly distributed along the circumference of the magnetizer 110, so that the spacers 120 are evenly distributed along the circumference of the magnetizer 110, making the magnetic field distribution in the core 100 more even, thereby improving the performance and efficiency of the motor. And the evenly distributed spacers 120 can reduce eddy current loss and improve motor efficiency.

[0067] Specifically, the thickness of each spacer 120 is less than 1 mm. Since the thinner the spacer 120 is, the smaller its magnetic resistance is, the spacer 120 with a thickness of less than 1 mm can increase the magnetic induction intensity, so as to increase the overall magnetic induction intensity of the core 100, thereby improving the efficiency and output power of the motor. Moreover, the thinner spacer 120 can shorten the eddy current path, thereby reducing the eddy current loss, helping to reduce the temperature rise and energy consumption of the motor, and improving the reliability and efficiency of the motor.

[0068] In the iron core 100 provided in the present application, one end of the accommodating groove 111 away from the radial inner sidewall of the magnet 110 is spaced from the radial outer sidewall of the magnet 110, and / or one end of the accommodating groove 111 away from the radial outer sidewall of the magnet 110 is spaced from the radial inner sidewall of the magnet 110. Specifically, the radial outer sidewall of the magnet 110 is spaced from the end of the accommodating groove 111 away from the radial inner sidewall of the magnet 110; or the radial inner sidewall of the magnet 110 is spaced from the end of the accommodating groove 111 away from the radial outer sidewall of the magnet 110; or the radial outer sidewall of the magnet 110 is spaced from the end of the accommodating groove 111 away from the radial inner sidewall of the magnet 110, and the radial inner sidewall of the magnet 110 is spaced from the end of the accommodating groove 111 away from the radial outer sidewall of the magnet 110, so that the magnet 110 forms an integral annular structure for accommodating the spacer 120.

[0069] Optionally, the radial outer wall of the magnet 110 is spaced apart from one end of the accommodating groove 111 away from the radial inner wall of the magnet 110 so that the spacer 120 inside the magnet 110 is not damaged when the radial outer wall of the magnet 110 is processed or processed with other parts.

[0070] See also Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 , Figure 7 This is a schematic diagram of the structure of the main body of an implementation method of the present application. Figure 8 This is a top view of an iron core according to an embodiment of the present application. Fig. 9It is a cross-sectional view of the iron core at AA of an embodiment of the present application. In the iron core 100 provided in the present application, the iron core 100 also includes an insulating shell 130, and the insulating shell 130 is sleeved on the magnet 110, and the spacer 120 is supported on the inner wall of the insulating shell 130 close to the end face 112 of the axial end of the magnet 110. Specifically, after the spacer 120 is accommodated in the magnet 110, the magnet 110 is partially or completely wrapped by the insulating shell 130 to prevent the spacer 120 from escaping from the magnet 110.

[0071] Optionally, when the receiving groove 111 is formed by a depression of an axial end face 112 of the magnetizer 110, the insulating shell 130 is covered on the end face 112, thereby limiting the spacer 120 in the receiving groove 111. When the receiving groove 111 axially penetrates the magnetizer 110, the insulating shell 130 completely wraps the magnetizer 110. When the receiving groove 111 penetrates an axial end face 112 and a radial outer side wall of the magnetizer 110, the insulating shell 130 wraps the radial outer side wall and an axial end face 112 of the magnetizer 110.

[0072] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0073] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An iron core, characterized in that: include: A magnetic conductor, the magnetic conductor comprises a body and a first boss, the first boss is convexly arranged on one end of the body along the axial direction, and the body is provided with a receiving groove; A spacer is received in the receiving groove.

2. The core according to claim 1, characterized in that The first boss is arranged around the radial inner wall of the body, and the radial outer wall of the first boss is used for winding.

3. The core according to claim 1, characterized in that The diaphragm is insulated from the magnetic conductor.

4. The core according to claim 3, characterized in that An insulating layer is provided between the groove wall of the accommodating groove and the outer surface of the spacer.

5. The core according to claim 4, characterized in that The insulating layer is arranged on the groove wall of the containing groove or the outer surface of the partition.

6. The core according to claim 1, characterized in that The accommodating groove extends in the radial direction of the magnetizer, the length direction of the spacer is in the same direction as the radial direction of the magnetizer, and the width direction of the spacer is in the same direction as the axial direction of the magnetizer.

7. The core according to claim 1, characterized in that The radial side wall of the body or the end surface of the body along the axial direction is recessed to form the accommodation groove.

8. The core according to claim 1, characterized in that The accommodating groove penetrates the body along the axial direction of the magnetic conductor, one end surface of the spacer is flush with one end surface of the body along the axial direction, and the other end surface of the spacer is flush with the other end surface of the body along the axial direction.

9. The core according to claim 1, characterized in that: The spacer is interference fit with the receiving groove.

10. The core according to any one of claims 1 to 9, characterized in that: A plurality of the spacers are provided, and a plurality of the receiving grooves are provided on the main body at intervals along the circumferential direction of the magnetic conductor, and each of the receiving grooves receives at least one spacer.

11. The core according to claim 10, characterized in that The plurality of accommodating grooves are evenly distributed along the circumference of the magnetic conductor.

12. The core according to claim 10, characterized in that The thickness of each of the spacers is less than 1 mm.

13. The core according to claim 1, characterized in that The magnetic conductor also includes a second boss, which is arranged on an end of the body axially away from the first boss, and the second boss is used for winding.

14. A rotor, characterized in that: The rotor comprises a plurality of cores according to any one of claims 1 to 13, and the plurality of cores are stacked.

15. A stator, characterized in that: The stator comprises a winding and a plurality of iron cores as described in any one of claims 1 to 13, and the winding is wound on the radial outer side wall of the first boss.

16. The stator according to claim 15, characterized in that A plurality of the cores are stacked.

17. A motor, characterized in that: The electric machine comprises the rotor according to claim 14 or the stator according to any one of claims 15-16.

18. A suspension system, characterized in that: The suspension system includes the electric machine of claim 17 .

19. A vehicle, characterized in that: The vehicle comprises an electric machine as claimed in claim 17 or a suspension system as claimed in claim 18 .

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