Stator assembly, axial flux motor and vehicle

Abstract

The utility model relates to a stator assembly, an axial flux motor and a vehicle, the stator assembly comprises a plurality of stator teeth, at least one stator tooth comprises an iron core single body and an iron core block, the iron core single body is provided with two first end parts which are oppositely arranged along the axial direction of the stator assembly, and at least one first end part is provided with a first mounting groove; the iron core blocks are embedded in the first mounting grooves, so that the structure of the stator teeth can be optimized, the stator teeth can better adapt to the distribution and change of a magnetic field, the assembly operation of the stator assembly is simple, and the production efficiency is improved. The material of the iron core block and the material of the iron core monomer are arranged differently, the material of the iron core block comprises the soft magnetic composite material, and the iron core monomer and the iron core block made of the soft magnetic composite material are combined, so that the weight of the stator assembly is reduced while the magnetic performance of the stator assembly meets the requirement.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a stator assembly, an axial flux motor and a vehicle. BACKGROUND

[0002] The axial flux motor is widely used in many fields, including vehicles, aerospace, ship propulsion, wind power generation, robots, agricultural machinery, construction equipment and elevators, etc., due to its compact structure, high torque density, high power density and high efficiency.

[0003] In the related art, the stator assembly usually includes a metal sheet stack made of soft magnetic composite material to form an iron core part and an iron core monomer. However, the multiple metal sheet stacks are arranged, which causes the installation operation of the stator assembly to be complicated and reduces the production efficiency of the stator assembly. UTILITY MODEL CONTENT

[0004] The embodiments of the present application provide a stator assembly, an axial flux motor and a vehicle, aiming at solving the problem of complicated installation operation of the stator assembly in the related art and reducing the production efficiency of the stator assembly.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a stator assembly is provided, which includes a plurality of stator teeth, at least one of the stator teeth includes an iron core monomer and an iron core block, the iron core monomer has two first end portions arranged in opposite directions along the axial direction of the stator assembly, at least one of the first end portions is provided with a first mounting slot, the iron core block is embedded in the first mounting slot, the material of the iron core block is different from the material of the iron core monomer, and the material of the iron core block includes soft magnetic composite material.

[0006] Optionally, the first mounting slot is arranged through the iron core monomer along the radial direction of the stator assembly.

[0007] Optionally, at least two first mounting slots are arranged in the same iron core monomer, and each first end portion is provided with at least one first mounting slot.

[0008] Optionally, along the axial direction of the stator assembly, the iron core block includes a first end face away from the bottom of the first mounting slot, and there is a height difference between the first end face and the end face of the first end portion along the axial direction of the stator assembly.

[0009] Optionally, along the axial direction of the stator assembly, the iron core block includes a first end face away from the bottom of the first mounting slot, and the first end face is at least partially arranged as a circular arc surface.

[0010] Optionally, it further includes two pressing plates, two pressing plates are arranged on both sides of the plurality of stator teeth along the axial direction of the stator assembly, and the two pressing plates are fixedly connected with the plurality of stator teeth.

[0011] Optionally, the pressing plate is fixedly connected with the corresponding first end portion by bonding.

[0012] Optionally, the pressing plate is provided with a plurality of through holes in the circumferential direction of the stator assembly, and an installation portion is formed between two adjacent through holes, and each through hole accommodates part of the stator teeth.

[0013] Two adjacent stator teeth include oppositely arranged side walls, and the side walls are arranged in steps to form an abutting surface arranged towards the pressing plate, and the installation portion is located between two adjacent stator teeth and abuts against the abutting surface.

[0014] Optionally, the core monomer comprises a silicon steel.

[0015] Optionally, a plurality of stator teeth are arranged at intervals in the circumferential direction of the stator assembly, and an accommodation groove for accommodating windings is formed between two adjacent stator teeth.

[0016] Optionally, a stator yoke is further included, and the stator yoke is connected between two adjacent stator teeth.

[0017] According to a second aspect of the present application, an axial flux motor is provided, comprising:

[0018] The stator assembly as described above;

[0019] A rotor assembly arranged in the axial direction of the stator assembly.

[0020] Optionally, two rotor assemblies are provided, and the stator assembly is clamped between the two rotor assemblies.

[0021] According to a third aspect of the present application, a vehicle is further provided, and the vehicle comprises the axial flux motor as described above.

[0022] The material of the core block is different from the material of the core monomer, and the material of the core block includes soft magnetic composite material, so that the stator tooth meets the mechanical strength and processing performance, and the soft magnetic composite material optimizes the magnetic circuit design and reduces the loss. The high magnetic permeability characteristics of the soft magnetic composite material enable the magnetic field in the magnetic circuit to be more effectively conducted, thereby reducing the magnetic resistance and improving the efficiency of the motor with the stator assembly. The low coercivity and high resistivity characteristics of the soft magnetic composite material help to reduce hysteresis loss and eddy current loss, further reducing the energy loss of the motor with the stator assembly. By providing a first mounting groove at the first end of the core monomer and embedding the core block made of soft magnetic composite material therein, the structure of the stator tooth can be optimized to better adapt to the distribution and change of the magnetic field, and the assembly operation of the stator assembly is simple, improving the production efficiency. The core block made of soft magnetic composite material has a lighter weight compared to traditional magnetic materials such as silicon steel sheets. Therefore, combining the core monomer and the core block made of soft magnetic composite material can ensure that the magnetic performance of the stator assembly meets the demand while reducing the weight of the stator assembly.

[0023] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0025] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0026] Figure 1 is a structural schematic diagram of a stator assembly provided in an exemplary embodiment of the present disclosure;

[0027] Figure 2 is a structural schematic diagram of a plurality of stator teeth provided in an exemplary embodiment of the present disclosure;

[0028] Figure 3 is a structural schematic diagram of a plurality of core monomers provided in an exemplary embodiment of the present disclosure;

[0029] Figure 4 is a structural schematic diagram of a core block (one angle) provided in an exemplary embodiment of the present disclosure;

[0030] Figure 5is a structural schematic view of a core block (another angle) provided in the exemplary embodiment of the present disclosure;

[0031] Figure 6 is a structural schematic view of a plurality of stator teeth provided with a plurality of windings.

[0032] Legend of reference signs:

[0033] 100, stator assembly; 110, stator tooth; 111, accommodating groove; 112, abutting face; 120, core monomer; 121, first end portion; 1211, first mounting groove; 130, core block; 131, first end face; 140, stator yoke; 150, pressing plate; 151, through hole; 152, mounting portion; 200, winding. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0035] The present application provides a stator assembly 100, please refer to Figures 1 to 3 , Figure 1 is a structural schematic view of a stator assembly provided in the exemplary embodiment of the present disclosure; Figure 2 is a structural schematic view of a plurality of stator teeth provided in the exemplary embodiment of the present disclosure; Figure 3 is a structural schematic view of a plurality of core monomers provided in the exemplary embodiment of the present disclosure.

[0036] The stator assembly 100 comprises a plurality of stator teeth 110, at least one stator tooth 110 comprises a core monomer 120 and a core block 130, the core monomer 120 has two first end portions 121 arranged axially away from each other along the stator assembly 100, and at least one first end portion 121 is provided with a first mounting groove 1211.

[0037] It should be noted that the shape of the slot of the first mounting groove 1211 can be selected as needed, for example, the slot of the first mounting groove 1211 can be long strip, circle, square, triangle or other polygon, etc. The present application does not make limitation hereon.

[0038] The core block 130 is embedded in the first mounting groove 1211, the material of the core block 130 is different from the material of the core monomer 120, and the material of the core block 130 comprises soft magnetic composite material.

[0039] It should be noted that the soft magnetic composite material is composed of iron powder particles with high purity and compressibility and a material that is thin and uniformly laminated and bonded together. Since the soft magnetic composite material has low coercivity and high resistivity, it can significantly reduce the hysteresis loss and eddy current loss in the stator assembly 100. This helps to improve the efficiency of the motor with the stator assembly 100 and reduce energy waste. High permeability enables the soft magnetic composite material to conduct the magnetic field more effectively, thereby optimizing the magnetic circuit design of the motor with the stator assembly 100 and improving the output power and torque of the motor.

[0040] In addition, the material of the core monomer 120 can be selected as needed, for example, the material of the core monomer 120 can include amorphous material or silicon steel, etc. The present application does not limit this.

[0041] In the stator assembly 100 of the embodiment of the present application, the material of the core block 130 is different from the material of the core monomer 120, and the material of the core block 130 includes a soft magnetic composite material, so that the stator tooth 110 meets the mechanical strength and processing performance, and the soft magnetic composite material optimizes the magnetic circuit design and reduces the loss. The high permeability characteristic of the soft magnetic composite material enables the magnetic field in the magnetic circuit to be more effectively conducted, thereby reducing the magnetic resistance and improving the efficiency of the motor with the stator assembly 100. The low coercivity and high resistivity characteristics of the soft magnetic composite material help to reduce the hysteresis loss and eddy current loss, further reducing the energy loss of the motor with the stator assembly 100. By providing the first mounting groove 1211 at the first end 121 of the core monomer 120 and embedding the core block 130 made of soft magnetic composite material therein, the structure of the stator tooth 110 can be optimized to better adapt to the distribution and change of the magnetic field, and the assembly operation of the stator assembly 100 is simple, improving the production efficiency. The core block 130 made of soft magnetic composite material has a lighter weight compared to traditional magnetic materials such as silicon steel sheets. Therefore, combining the core monomer 120 and the core block 130 made of soft magnetic composite material can achieve the magnetic performance of the stator assembly 100 meeting the demand while reducing the weight of the stator assembly 100.

[0042] Referring to Figure 2 and Figure 3In some embodiments, the first installation slot 1211 is arranged through the core monomer 120 in the radial direction of the stator assembly 100, so that the installation and disassembly of the core block 130 are simplified. The radially-through installation slot also increases the heat dissipation area of the core monomer 120. During the operation of the motor, the heat generated can be dissipated more effectively through the installation slot, thereby improving the heat dissipation performance of the motor and prolonging the service life. In addition, the arrangement of the first installation slot 1211 through the core monomer 120 in the radial direction of the stator assembly 100 reduces the amount of the core monomer 120 and correspondingly increases the amount of the core block 130, thereby achieving the purpose of ensuring that the magnetic performance of the stator assembly 100 meets the requirements while minimizing the weight of the stator assembly 100.

[0043] With reference to the foregoing Figure 2 and Figure 3 In some embodiments, at least two first installation slots 1211 are arranged on the same core monomer 120, and each first end portion 121 is provided with at least one first installation slot 1211. In this way, by arranging multiple first installation slots 1211 on the same core monomer 120 and embedding the core block 130 made of soft magnetic composite material, the magnetic circuit can be more flexibly designed, which helps to optimize the distribution and conduction of the magnetic field and ensure that the magnetic performance of the stator tooth 110 meets the requirements. The arrangement of multiple first installation slots 1211 and multiple core blocks 130 made of soft magnetic composite material can reduce the magnetic resistance and improve the magnetic permeability of the stator tooth 110, which helps to enhance the magnetic induction intensity of the motor with the stator assembly 100, thereby improving the efficiency and performance of the motor with the stator assembly 100.

[0044] It should be noted that each first end portion 121 can be provided with one first installation slot 1211, two first installation slots 1211, or three first installation slots 1211, etc. The number of first installation slots 1211 that can be arranged on each first end portion 121 can be set as needed. In addition, the at least one first installation slot 1211 arranged on the two first end portions of the same core monomer 120 can be arranged symmetrically or staggered. Specifically, the present application does not limit this. In addition, the shapes of the first installation slots 1211 arranged on the two first end portions 121 can be the same or different. Specifically, the present application does not limit this.

[0045] In some embodiments, along the axial direction of the stator assembly 100, the core block 130 comprises a first end surface 131 facing away from the bottom of the first mounting slot 1211, and the first end surface 131 and the end surface of the first end portion 121 have a height difference along the axial direction of the stator assembly 100. Thus, due to the existence of the height difference, the air gap distance between the rotor and the stator assembly 100 during rotation will change, that is, an unequal air gap is formed. The unequal air gap can weaken the interaction force between the rotor permanent magnet and the stator core tooth slot, thereby reducing the positioning torque (also known as cogging torque). The unequal air gap can change the magnetic field distribution in the motor air gap, making the magnetic field more uniform and reducing magnetic field fluctuations and distortion, which helps to reduce torque pulsation caused by magnetic field changes. The unequal air gap can reduce the harmonic components of the air gap magnetic field, thereby reducing torque pulsation caused by harmonics, which helps to improve the smoothness and stability of the motor operation. The reduction of torque pulsation can also reduce noise and vibration during motor operation.

[0046] It should be noted that the end surface of the first end portion 121 has the same orientation as the first end surface 131, both of which are arranged on the outer side of the first mounting slot 1211 in the axial direction of the stator assembly 100.

[0047] Referring to Figure 4 and Figure 5 , Figure 4 is a structural schematic diagram of a core block (one angle) provided in an exemplary embodiment of the present disclosure; Figure 5 is a structural schematic diagram of a core block (another angle) provided in an exemplary embodiment of the present disclosure. In some embodiments, along the axial direction of the stator assembly 100, the core block 130 comprises a first end surface 131 facing away from the bottom of the first mounting slot 1211, and the first end surface 131 is at least partially arranged as a circular arc surface. Thus, when the first end surface 131 of the core block 130 is arranged as a circular arc surface, the air gap distance between the rotor and the stator assembly 100 during rotation will no longer be uniform. This non-uniform air gap distribution helps to reduce torque pulsation. The design of the circular arc surface can change the magnetic field distribution in the motor air gap, making the magnetic field more uniform and reducing magnetic field fluctuations and distortion, which helps to reduce torque pulsation caused by magnetic field changes. The unequal air gap can weaken the interaction force between the rotor permanent magnet and the stator core tooth slot, thereby reducing the positioning torque (also known as cogging torque). Through the design of the circular arc surface, the positioning torque can be further reduced, thereby reducing torque pulsation. The design of the circular arc surface can also reduce the harmonic components of the air gap magnetic field, which helps to reduce torque pulsation during motor operation, improve the smoothness and stability of the motor operation, and reduce vibration and noise. In addition, by reducing torque pulsation, mechanical stress and thermal stress during motor operation can be reduced, thereby improving the reliability and service life of the motor.

[0048] Referring to Figure 1In some embodiments, the stator assembly 100 further comprises two pressing plates 150, which are arranged on both sides of the plurality of stator teeth 110 along the axial direction of the stator assembly 100, and are fixedly connected with the plurality of stator teeth 110. In this way, the presence of the pressing plates 150 increases the overall rigidity of the stator assembly 100, so that it can better resist external vibration and impact, which helps to improve the operation stability and reliability of the motor. In addition, since the outer side of the stator teeth 110 is usually sleeved with the winding 200, by arranging the pressing plates 150, the winding 200 can be firmly fixed on the stator teeth 110 (see Figure 2 ), preventing the winding 200 from being displaced or loosened due to electromagnetic force or centrifugal force during the operation of the motor, and improving the installation stability of the winding 200. In addition, the pressing plates 150 can also seal the winding 200 to prevent internal coolant leakage.

[0049] In some embodiments, the pressing plates 150 are adhesively fixed with the corresponding first end portions 121. In this way, the adhesively fixed manner can provide strong connection strength, ensuring that the pressing plates 150 and the first end portions 121 form a stable combination. This fixing manner is not easy to loosen due to vibration or external force, thereby improving the overall stability and reliability of the stator assembly 100. Compared with other fixing manners (such as bolt connection, etc.), the adhesively fixed manner can reduce the risk of failure caused by loosening of connecting parts, which helps to prolong the service life of the stator assembly 100 and reduce the downtime caused by maintenance. The adhesively fixed manner can disperse stress and reduce stress concentration, which helps to reduce the risk of damage of the stator assembly 100 due to excessive stress during operation. The adhesively fixed manner does not require complex installation steps and tools, and only needs to adhesively fix the pressing plates 150 with the first end portions 121, which helps to simplify the manufacturing process and improve production efficiency.

[0050] Continuing to refer to Figure 1In some embodiments, the pressing plate 150 is provided with a plurality of through holes 151 along the circumference of the stator assembly 100, and a mounting portion 152 is formed between any two adjacent through holes 151. Each through hole 151 accommodates part of a stator tooth 110, and any two adjacent stator teeth 110 include oppositely arranged side walls that are stepped to form an abutting surface 112 arranged towards the pressing plate 150. The mounting portion 152 is located between any two adjacent stator teeth 110 and abuts against the abutting surface 112. In this way, the positioning and mounting between the stator teeth 110 and the pressing plate 150 are achieved by inserting part of the stator teeth 110 into the through holes 151 of the pressing plate 150 and abutting the stepped side walls of the adjacent stator teeth 110 against the mounting portion 152 of the pressing plate 150. This connection method helps to prevent the stator teeth 110 from loosening or shifting during operation, thereby improving the overall structural stability of the stator assembly 100. The design of the plurality of through holes 151 and mounting portions 152 on the pressing plate 150 makes the stress on the stator teeth 110 more uniform, which helps to reduce the risk of damage to the stator teeth 110 due to stress concentration. The design of the through holes 151 on the pressing plate 150 helps to increase the heat dissipation area of the stator assembly 100, so that heat can be dissipated more effectively, which helps to reduce the temperature of the stator assembly 100 and improve the thermal stability and service life of the motor.

[0051] Referring again to Figure 1 In some embodiments, the core monomer 120 includes coiled silicon steel. In this way, the coiled silicon steel is obtained by mechanical coiling. The core monomer 120 made of coiled silicon steel can be tightly fitted due to the small gap between the silicon steel sheets, which helps to reduce the loss of the core monomer 120 and improve the magnetic permeability. In addition, the coiled silicon steel method can realize automatic production, improve production efficiency and quality, and reduce labor and time costs.

[0052] Referring to Figures 1 to 3In some embodiments, the plurality of stator teeth 110 are arranged in a spaced manner along the circumferential direction of the stator assembly 100, and an accommodation slot 111 for accommodating the winding 200 is formed between any two adjacent stator teeth 110. In this way, the magnetic field distribution inside the stator assembly 100 can be made more uniform through the spaced arrangement of the plurality of stator teeth 110, which helps to reduce magnetic field fluctuations and distortions and improve the electromagnetic efficiency of the motor. The close fit between the stator teeth 110 and the winding 200 can make the electromagnetic induction effect more pronounced. When the winding 200 is energized, a stronger magnetic field can be generated in the stator teeth 110, thereby driving the motor to rotate. The presence of the accommodation slot 111 can fix the position of the winding 200 and prevent it from shifting or loosening during operation, which helps to ensure the stability and reliability of the winding 200 and prolong the service life of the motor. By embedding the winding 200 in the accommodation slot 111, the vibration and impact experienced by the winding 200 during operation can be reduced, which helps to reduce the noise and vibration level of the motor and improve the smoothness of the motor operation. The spacing between the stator teeth 110 and the presence of the accommodation slot 111 can increase the heat dissipation area of the stator assembly 100, which helps to more effectively dissipate the heat generated by the motor during operation and reduce the temperature of the motor.

[0053] With reference to Figures 1 to 3 In an embodiment, the stator assembly 100 further comprises a stator yoke 140 connected between any two adjacent stator teeth 110. In this way, the stator yoke 140 serves as a bridge and support, enhancing the overall structural stability of the stator assembly 100 and ensuring stable operation of the motor. At the same time, the stator yoke 140 can also reduce vibration and noise between the stator teeth 110 and improve the smoothness of the motor operation. As an important component of the magnetic circuit, the stator yoke 140 can more effectively transfer magnetic field energy. During motor operation, the magnetic field generated by the energized stator winding 200 is transmitted to the stator yoke 140 through the stator teeth 110, and then transmitted to the adjacent stator teeth 110 through the stator yoke 140, forming a complete magnetic circuit. This design helps to reduce magnetic resistance and leakage, improving the electromagnetic efficiency and performance of the motor. The presence of the stator yoke 140 can also increase the heat dissipation area of the stator assembly 100, helping to more effectively dissipate the heat generated by the motor during operation. In addition, the plurality of stator teeth 110 are connected into a whole through the plurality of stator yokes 140, making the installation and disassembly of the stator assembly 100 simple.

[0054] According to a second aspect of the present disclosure, an axial flux motor is provided, comprising the stator assembly 100 and a rotor assembly, the rotor assembly is arranged in the axial direction of the stator assembly 100, and the structure of the stator assembly 100 is as described above. Since the axial flux motor adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Specifically, the rotor assembly comprises a rotor disc and a permanent magnet, the rotor disc is provided with a mounting groove, and the permanent magnet is arranged in the mounting groove.

[0055] In some embodiments, two rotor assemblies are provided, and the stator assembly 100 is sandwiched between the two rotor assemblies. When the stator assembly 100 is sandwiched by the two rotor assemblies, the electromagnetic coupling effect between them is enhanced, which helps to reduce the magnetic resistance, increase the magnetic flux, and thus improve the electromagnetic efficiency and power output of the motor. The double-rotor structure enables the motor to generate greater torque in the same volume. The double-rotor structure helps to balance the axial force, reduce the load and wear of the bearing, and improve the operation stability and life of the motor. The double-rotor structure helps to reduce the vibration and noise of the motor, and improves the operation stability and comfort of the motor.

[0056] According to a third aspect of the present disclosure, a vehicle is provided, comprising an axial flux motor, the structure of the axial flux motor is as described above. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0057] The vehicle can be a fuel car, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and the present disclosure does not make specific limitations.

[0058] In the description of the present application, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0059] In the above-mentioned embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0060] The embodiments, implementation manners and related technical features of the present application can be combined, replaced with each other without conflict.

[0061] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and in accordance with the technical essence of the present application, are still within the scope of the technical solution of the present application.

Claims

1. A stator assembly characterized by, The stator assembly comprises a plurality of stator teeth, at least one of the stator teeth comprises a core single body and a core block, the core single body has two first ends arranged axially away from each other, at least one of the first ends is provided with a first mounting groove, the core block is embedded in the first mounting groove, the material of the core block is different from that of the core single body, and the material of the core block comprises soft magnetic composite material.

2. The stator assembly of claim 1, wherein, The first mounting groove is arranged through the core single body in the radial direction of the stator assembly.

3. The stator assembly of claim 1, wherein, The same core single body is provided with at least two first mounting grooves, and each first end is provided with at least one first mounting groove.

4. A stator assembly according to any one of claims 1 to 3, characterised in that, In the axial direction of the stator assembly, the core block comprises a first end face away from the groove bottom of the first mounting groove, and the first end face and the end face of the first end have a height difference in the axial direction of the stator assembly.

5. A stator assembly according to any one of claims 1 to 3, characterised in that, In the axial direction of the stator assembly, the core block comprises a first end face away from the groove bottom of the first mounting groove, and the first end face is at least partially provided as a circular arc curved surface.

6. A stator assembly according to any one of claims 1 to 3, characterised in that, Further comprising two pressing plates, two pressing plates are arranged on both sides of the plurality of stator teeth in the axial direction of the stator assembly, and the two pressing plates are fixedly connected with the plurality of stator teeth.

7. The stator assembly of claim 6, wherein, The pressing plate is provided with a plurality of through holes in the circumferential direction of the stator assembly, and an installation portion is formed between adjacent two through holes, and each through hole accommodates part of the stator teeth; Adjacent two stator teeth comprise oppositely arranged side walls, the side walls are arranged in steps to form an abutting surface arranged towards the pressing plate, and the installation portion is between adjacent two stator teeth and abuts against the abutting surface.

8. A stator assembly according to any one of claims 1 to 3, characterised in that, The core single body comprises a wound silicon steel.

9. A stator assembly according to any one of claims 1 to 3, characterised in that, The plurality of stator teeth are arranged at intervals in the circumferential direction of the stator assembly, and an accommodation groove for accommodating windings is formed between adjacent two stator teeth.

10. The stator assembly of claim 9, wherein, Further comprising a stator yoke connected between adjacent two stator teeth.

11. An axial flux electric machine characterised in that, Comprise: The stator assembly according to any one of claims 1 to 10; And, A rotor assembly arranged in the axial direction of the stator assembly with the stator assembly.

12. An axial flux machine according to claim 11, characterised in that, The rotor assembly is provided with two, and the stator assembly is clamped between the two rotor assemblies.

13. A vehicle characterized by comprising: Comprise the axial flux motor according to claim 11 or 12.

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