Axial flux motor

Abstract

The utility model discloses an axial magnetic flux motor which comprises a first stator, a second stator and a rotor, the rotor is arranged between the first stator and the second stator, and the rotor comprises a supporting frame, a first Halbach magnet array and a second Halbach magnet array. The first Halbach magnet array and the second Halbach magnet array are respectively arranged on the support frame, the magnetic field intensity of the first Halbach magnet array towards the first stator is larger than that of the first Halbach magnet array back to the first stator, and the magnetic field intensity of the second Halbach magnet array towards the second stator is larger than that of the second Halbach magnet array back to the second stator. Through the arrangement of the first Halbach magnet array and the second Halbach magnet array, the power density of the axial magnetic flux motor is improved, and the size of the axial magnetic flux motor is reduced.

Description

Technical Field

[0001] This application relates to the technical field of motors, and particularly to an axial flux motor. Background Art

[0002] Axial flux motors have received extensive attention due to their advantages such as compact structure, large torque density, and short axial length. They are particularly suitable for some occasions where the axial dimension space is limited. Axial flux motors are divided into various topological structures such as single stator single rotor, single stator double rotor, single rotor double stator, and multi-stator multi-rotor. Each structure has its own advantages and disadvantages. The traditional single rotor double stator axial flux motor has bilateral air gaps, and its power density still needs to be improved. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, this application proposes an axial flux motor.

[0004] To achieve the above object, this application discloses an axial flux motor, which includes:

[0005] A first stator;

[0006] A second stator; and

[0007] A rotor disposed between the first stator and the second stator. The rotor includes a support frame, a first Halbach magnet array, and a second Halbach magnet array. The first Halbach magnet array and the second Halbach magnet array are respectively disposed on the support frame. The magnetic field intensity of the first Halbach magnet array facing the first stator is greater than the magnetic field intensity facing away from the first stator, and the magnetic field intensity of the second Halbach magnet array facing the second stator is greater than the magnetic field intensity facing away from the second stator.

[0008] In some embodiments of this application, the first Halbach magnet array and the second Halbach magnet array are arranged alternately along the axis of the axial flux motor.

[0009] In some embodiments of this application, the first Halbach magnet array is disposed on one axial side of the support frame, and the second Halbach magnet array is disposed on the other axial side of the support frame.

[0010] In some embodiments of this application, the support frame and the first Halbach magnet array are injection-molded and connected;

[0011] And / or, the support frame and the second Halbach magnet array are injection-molded and connected.

[0012] In some embodiments of the present application, the first Halbach magnet array includes a plurality of first magnets, and the plurality of first magnets are distributed in a ring at intervals;

[0013] And / or, the second Halbach magnet array includes a plurality of second magnets, and the plurality of second magnets are distributed in a ring at intervals.

[0014] In some embodiments of the present application, the first magnets of the first Halbach magnet array and the second magnets of the second Halbach magnet array are arranged staggeredly along the circumferential direction of the rotor.

[0015] In some embodiments of the present application, the stagger angle between the first magnet and the second magnet is α, and α=(360 / n), where n is the least common multiple of the number of poles and the number of slots of the axial flux motor.

[0016] In some embodiments of the present application, the axial flux motor further includes a rotating shaft, the rotating shaft passes through the first stator, the rotor and the second stator, and the rotating shaft is fixedly connected to the rotor.

[0017] In some embodiments of the present application, the support frame and the rotating shaft are injection-molded and connected.

[0018] In some embodiments of the present application, the first stator includes a first end cover, a first iron core and a first bearing, the first iron core and the first bearing are arranged on the first end cover, and the rotating shaft passes through the first bearing.

[0019] In some embodiments of the present application, the first end cover and the first bearing are injection-molded and connected;

[0020] And / or, the first end cover and the first iron core are injection-molded and connected.

[0021] In some embodiments of the present application, the second stator includes a second end cover, a second iron core and a second bearing, the second iron core and the second bearing are arranged on the second end cover, and the rotating shaft passes through the second bearing.

[0022] In some embodiments of the present application, the second end cover and the second bearing are injection-molded and connected;

[0023] And / or the second end cover and the second iron core are injection-molded and connected.

[0024] Other advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0026] Figure 1 Schematic diagram of an axial flux motor in some embodiments;

[0027] Figure 2 Exploded view of an axial flux motor in some embodiments;

[0028] Figure 3 Cross-sectional view of an axial flux motor in some embodiments;

[0029] Figure 4 Schematic diagram of a rotor in some embodiments;

[0030] Figure 5 Schematic diagram of a rotor in some embodiments (with a different perspective from Figure 4 );

[0031] Figure 6 Schematic diagram of a rotor in some embodiments (with the first magnet and the second magnet staggered);

[0032] Figure 7 Schematic diagram of the staggered arrangement of the first magnet and the second magnet in some embodiments;

[0033] Figure 8 Schematic diagram of the first iron core or the second iron core in some embodiments.

[0034] Explanation of the reference numerals in the drawings:

[0035] First stator 1000, first end cover 1100, first iron core 1200, first bearing 1300, second stator 2000, second end cover 2100, second iron core 2200, second bearing 2300, rotor 3000, first Halbach magnet array 3100, first magnet 3110, second Halbach magnet array 3200, second magnet 3210, support frame 3300, rotating shaft 4000.

[0036] The realization of the objectives, functional features, and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In the present application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] In addition, in the present application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0041] Combined with Figure 1 、 Figure 2 and Figure 3As shown, in some embodiments, the axial flux motor includes a first stator 1000, a second stator 2000 and a rotor 3000. The rotor 3000 is disposed between the first stator 1000 and the second stator 2000. The so-called rotor 3000 is a rotatable part relative to the first stator 1000 and the second stator 2000. Specifically, the first stator 1000 is disposed on one axial side of the rotor 3000, and the second stator 2000 is disposed on the other axial side of the rotor 3000. In this way, the rotor 3000 is disposed between the first stator 1000 and the second stator 2000. When the first stator 1000 and the second stator 2000 are energized, they can interact with the rotor 3000, so that the rotor 3000 rotates between the first stator 1000 and the second stator 2000. Centered on the rotor 3000, the first stator 1000 and the second stator 2000 are substantially symmetrically distributed. Both the first stator 1000 and the second stator 2000 can generate forces on the rotor 3000, so that the rotation of the rotor 3000 is more stable, and the eccentric wear of the shaft system of the axial flux motor can be reduced or even avoided.

[0042] Further, in combination with Figure 4 and Figure 5As shown, the rotor 3000 includes a support frame 3300, a first Halbach magnet array 3100, and a second Halbach magnet array 3200. The support frame 3300 is the framework of the rotor 3000, which realizes the support for other components of the rotor 3000 (the first Halbach magnet array 3100 and the second Halbach magnet array 3200), laying the foundation for the rotation of the rotor 3000. The support frame 3300 can be made of plastic materials or other materials. To meet different installation requirements, the support frame 3300 can be in a regular shape or an irregular shape. The first Halbach magnet array 3100 and the second Halbach magnet array 3200 are respectively arranged on the support frame 3300, that is, the first Halbach magnet array 3100 and the second Halbach magnet array 3200 are fixed on the support frame 3300 and thus supported by the support frame 3300. The so-called first Halbach magnet array 3100 is formed by arranging a number of magnets in a specific pattern, and the same is true for the second Halbach magnet array 3200. Both the first Halbach magnet array 3100 and the second Halbach magnet array 3200 can achieve unilateral magnetic concentration. Since the first stator 1000 is arranged on one axial side of the rotor 3000 and the second stator 2000 is arranged on the other axial side, in this embodiment, the first Halbach magnet array 3100 cooperates with the first stator 1000, and the first Halbach magnet array 3100 concentrates magnetic flux towards the first stator 1000, making the magnetic field intensity of the first Halbach magnet array 3100 towards the first stator 1000 greater than that away from the first stator 1000. In this way, the air-gap magnetic density between the rotor 3000 and the first stator 1000 can be improved, which is beneficial to increasing the power density of the axial-flux motor and reducing the volume of the axial-flux motor. Similarly, the second Halbach magnet array 3200 cooperates with the second stator 2000, and the second Halbach magnet array 3200 concentrates magnetic flux towards the second stator 2000, making the magnetic field intensity of the second Halbach magnet array 3200 towards the second stator 2000 greater than that away from the second stator 2000. In this way, the air-gap magnetic density between the rotor 3000 and the second stator 2000 can be improved, which is beneficial to increasing the power density of the axial-flux motor and reducing the volume of the axial-flux motor.

[0043] Combined with Figures 3 to 5As shown, in some embodiments, along the axis of the axial flux motor, the first Halbach magnet array 3100 and the second Halbach magnet array 3200 are designed to be arranged alternately, that is, along the axis of the axial flux motor, there is a certain distance between the first Halbach magnet array 3100 and the second Halbach magnet array 3200. The axis of the axial flux motor can be understood as the extension direction of the rotating shaft 4000. Since both the first Halbach magnet array 3100 and the second Halbach magnet array 3200 need to achieve unilateral magnetic concentration, by arranging them alternately along the axis of the axial flux motor, the magnetic field interaction between the two is reduced, which is more conducive to each of them achieving the unilateral magnetic concentration effect.

[0044] Further, in some embodiments, the first Halbach magnet array 3100 is arranged on one axial side of the support frame 3300, while the second Halbach magnet array 3200 is arranged on the other axial side of the support frame 3300. One axial side of the support frame 3300 is the side facing the first stator 1000, and the other axial side of the support frame 3300 is the side facing the second stator 2000. Since the first Halbach magnet array 3100 needs to interact with the first stator 1000 and the second Halbach magnet array 3200 needs to interact with the second stator 2000, by arranging the first Halbach magnet array 3100 on one axial side of the support frame 3300 and the second Halbach magnet array 3200 on the other axial side of the support frame 3300, the first Halbach magnet array 3100, the support frame 3300, and the second Halbach magnet array 3200 form a three-layer structure, further compressing the occupation of the axial space on the basis of ensuring the magnetic concentration of the first Halbach magnet array 3100 and the second Halbach magnet array 3200 respectively.

[0045] In some embodiments, the support frame 3300 is injection-molded and connected to the first Halbach magnet array 3100, that is, at least part of the support frame 3300 is injection-molded, and is synchronously connected to the first Halbach magnet array 3100 during the molding process, so that the first Halbach magnet array 3100 is embedded in at least part of the support frame 3300. For example, the first Halbach magnet array 3100 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the support frame 3300 and the support frame 3300 and the first Halbach magnet array 3100 are combined together. Through the injection-molding connection between the support frame 3300 and the first Halbach magnet array 3100, the support frame 3300 and the first Halbach magnet array 3100 are tightly combined, reducing the number of components, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0046] Similarly, in some embodiments, the support frame 3300 is injection-molded and connected to the second Halbach magnet array 3200, that is, at least part of the support frame 3300 is injection-molded and synchronously connected to the second Halbach magnet array 3200 during the molding process, so that the second Halbach magnet array 3200 is embedded in at least part of the support frame 3300. For example, the second Halbach magnet array 3200 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the support frame 3300 and the support frame 3300 and the second Halbach magnet array 3200 are combined together. Through the injection-molding connection between the support frame 3300 and the second Halbach magnet array 3200, the support frame 3300 and the second Halbach magnet array 3200 are tightly combined, reducing the number of components, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0047] Thus, the support frame 3300 can simultaneously achieve injection-molding connection with the first Halbach magnet array 3100 and the second Halbach magnet array 3200. For example, the first Halbach magnet array 3100 and the second Halbach magnet array 3200 are placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the support frame 3300 and the support frame 3300 is combined with the first Halbach magnet array 3100 and the second Halbach magnet array 3200 together.

[0048] Combined Figure 4 and Figure 5As shown, in some embodiments, the first Halbach magnet array 3100 includes first magnets 3110. The number of the first magnets 3110 is multiple, and "multiple" means two or more. The multiple first magnets 3110 are distributed alternately in a ring shape, thus forming a single-layer structure. The first Halbach magnet array 3100 can achieve magnetic concentration on one side. On this basis, designing the multiple first magnets 3110 that make up the first Halbach magnet array 3100 into a single-layer structure is more conducive to compressing the occupied space. Similarly, the second Halbach magnet array 3200 includes second magnets 3210. The number of the second magnets 3210 is multiple, and "multiple" means two or more. The multiple second magnets 3210 are distributed alternately in a ring shape to form a single-layer structure. The second Halbach magnet array 3200 can achieve magnetic concentration on one side. On this basis, designing the multiple second magnets 3210 that make up the second Halbach magnet array 3200 into a single-layer structure is also conducive to compressing the occupied space. It can be understood that since the first Halbach magnet array 3100 includes multiple first magnets 3110 and the second Halbach magnet array 3200 includes multiple second magnets 3210, when the support frame 3300 is injection-molded and connected to the first Halbach magnet array 3100 and the second Halbach magnet array 3200, that is, the support frame 3300 is injection-molded and connected to the first magnets 3110 and the second magnets 3210, the material of the first magnets 3110 and the second magnets 3210 can be rare-earth permanent magnet materials, ferrite permanent magnet materials, alnico alloys, Fe-Cr-Co alloys, etc., which are not limited herein.

[0049] Combined Figure 6 As shown, in some embodiments, the first magnet 3100 and the second magnet 3210 are designed to be staggeredly arranged along the circumferential direction of the rotor 3000. In this way, when the first magnet 3100 and the second magnet 3200 are projected along the axial direction of the axial-flux motor, the projection of the first magnet 3100 and the projection of the second magnet 3200 do not completely overlap. For example Figure 6 and Figure 7 shown, the first magnet 3100 and the second magnet 3210 are of the same size, or rather, the projections of the first magnet 3100 and the second magnet 3210 along the axial direction of the axial-flux motor are of the same size. Along the axial direction of the axial-flux motor, the projections of the first magnet 3100 and the second magnet 3210 partially overlap. In this way, the first magnet 3100 and the second magnet 3210 are staggeredly arranged along the circumferential direction of the rotor 3000. The staggered arrangement of the first magnet 3100 and the second magnet 3210 is beneficial to reducing cogging torque and torque ripple and improving the performance of the axial-flux motor.

[0050] Optionally, the stagger angle between the first magnet 3110 and the second magnet 3210 is α, and α satisfies α=(360 / n), where n is the least common multiple of the number of poles and the number of slots of the axial-flux motor. For example Figure 6 andFigure 8 As shown, the number of poles of the axial flux motor is 20 (corresponding to the number of poles of the first Halbach magnet array 3100 or the second Halbach magnet array 3200, the number of poles of the first Halbach magnet array 3100 is the same as the number of poles of the second Halbach magnet array 3200, both are 20), the number of slots is 24 (corresponding to the number of slots of the first stator 1000 or the second stator 2000, the number of slots of the first stator 1000 is the same as the number of slots of the second stator 2000, both are 24), then the least common multiple n is 120, so the staggered angle α of the first magnet 3110 and the second magnet 3210 is 3°. By such a setting, the performance of the axial flux motor can be further optimized.

[0051] Combination Figures 1 to 3 As shown, in some embodiments, the axial flux motor further includes a rotating shaft 4000 , the rotating shaft 4000 passes through the first stator 1000 , the rotor 3000 , and the second stator 2000 , and the rotor 3000 is connected and fixed to the rotating shaft 4000 .

[0052] By setting the rotating shaft 4000, the rotating shaft 4000 is supported on the first stator 1000 and the second stator 2000, so as to realize the rotation support of the rotor 3000. The connection between the rotor 3000 and the rotating shaft 4000 is fixed, that is, the rotor 3000 can drive the rotating shaft 4000 to rotate. When the first stator 1000 and the second stator 2000 are energized to make the rotor 3000 rotate, the rotor 3000 drives the rotating shaft 4000 to rotate synchronously. The rotation support of the rotor 3000 is realized by the setting of the rotating shaft 4000. There are many ways to connect and fix the rotor 3000 to the rotating shaft 4000. For example, the rotor 3000 is connected to the rotating shaft 4000 by key connection, screw connection, coupling connection, sleeve connection, etc., so as to be supported on the rotating shaft 4000. The rotation of the rotor 3000 can drive the rotating shaft 4000 to rotate. Since the rotor 3000 needs to rotate, the rotor 3000 can be sleeved on the rotating shaft 4000 and connected and fixed to the rotating shaft 4000, so that the rotor 3000 can drive the rotating shaft 4000 to rotate.

[0053] Further, the support frame 3300 is injection-molded with the rotating shaft 4000 to connect and fix the rotor 3000 and the rotating shaft 4000, further reducing the number of components. As can be seen from the above, the support frame 3300 is also injection-molded with the first Halbach magnet array 3100 and the second Halbach magnet array 3200, that is, the support frame 3300 is injection-molded with the first Halbach magnet array 3100, the second Halbach magnet array 3200, and the rotating shaft 4000, enhancing the bonding force between the support frame 3300, the first Halbach magnet array 3100, the second Halbach magnet array 3200, and the rotating shaft 4000, improving the structural stability and durability, reducing the number of components, and further improving the production efficiency. For example, the first Halbach magnet array 3100, the second Halbach magnet array 3200, and the rotating shaft 4000 are placed in a mold, and then plastic is injected into the mold. After the plastic is molded, it forms the support frame 3300 and the support frame 3300 is combined with the first Halbach magnet array 3100, the second Halbach magnet array 3200, and the rotating shaft 4000.

[0054] Combined Figure 3 As shown, in some embodiments, the first stator 1000 includes a first end cover 1100, a first iron core 1200, and a first bearing 1300. The first iron core 1200 is disposed on the first end cover 1100, the first bearing 1300 is disposed on the first end cover 1100, and the rotating shaft 4000 passes through the first bearing 1300. The first end cover 1100 is the skeleton of the first stator 1000, realizing the support for the first iron core 1200 and the first bearing 1300. For example, the first end cover 1100 is an injection-molded part. The first iron core 1200 is used for winding windings. There are various types of the first bearing 1300, which can be selected according to the actual situation. For example, the first bearing 1300 is a graphite bearing. The rotating shaft 4000 passes through the first bearing 1300. When the rotor 3000 drives the rotating shaft 4000 to rotate, the first bearing 1300 can reduce the rotational friction of the rotating shaft 4000.

[0055] The first bearing 1300 is disposed on the first end cover 1100, that is, the first bearing 1300 is fixed on the first end cover 1100. There are various connection and fixing methods between the first bearing 1300 and the first end cover 1100, as long as the first bearing 1300 can be fixed on the first end cover 1100. For example, the first bearing 1300 and the first end cover 1100 are connected and fixed by interference fit, lock nut fastening, sleeve positioning, etc. Further, the first end cover 1100 is injection-molded with the first bearing 1300, that is, at least part of the first end cover 1100 is injection-molded, and is synchronously connected with the first bearing 1300 during the molding process, so that the first bearing 1300 is embedded in at least part of the first end cover 1100, enhancing the bonding force between the first bearing 1300 and the first end cover 1100 and reducing the number of components.

[0056] The first iron core 1200 is disposed on the first end cover 1100, that is, the first iron core 1200 is fixed to the first end cover 1100. There are also various connection and fixing methods between the first iron core 1200 and the first end cover 1100. In this embodiment, the first end cover 1100 and the first iron core 1200 are injection-molded and connected, enhancing the bonding force between the first end cover 1100 and the first iron core 1200 and reducing the number of components. For example, the first bearing 1300 and the first iron core 1200 can be placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the first end cover 1100 and the first end cover 1100 is combined with the first bearing 1300 and the first iron core 1200 together.

[0057] Similarly, in combination with Figure 3 as shown, the second stator 2000 includes a second end cover 2100, a second iron core 2200 and a second bearing 2300. The second iron core 2200 is disposed on the second end cover 2100, the second bearing 2300 is disposed on the second end cover 2100, and the rotating shaft 4000 passes through the second bearing 2300. The second end cover 2100 is the framework of the second stator 2000, realizing the support for the second iron core 2200 and the second bearing 2300. For example, the second end cover 2100 is an injection-molded part, the second iron core 2200 is used for winding windings, and there are various types of the second bearing 2300, which can be selected according to actual situations. For example, the second bearing 2300 is a graphite bearing, and the rotating shaft 4000 passes through the second bearing 2300. When the rotor 3000 drives the rotating shaft 4000 to rotate, the second bearing 2300 can reduce the rotational friction of the rotating shaft 4000.

[0058] The second bearing 2300 is disposed on the second end cover 2100, that is, the second bearing 2300 is fixed to the second end cover 2100. There are various connection and fixing methods between the second bearing 2300 and the second end cover 2100, as long as the second bearing 2300 can be fixed on the second end cover 2100. For example, the second bearing 2300 and the second end cover 2100 are connected and fixed by means of interference fit, fastening with a lock nut, sleeve positioning, etc. Further, the second end cover 2100 and the second bearing 2300 are injection-molded and connected, that is, at least part of the second end cover 2100 is injection-molded, and is synchronously connected with the second bearing 2300 during the molding process, so that the second bearing 2300 is embedded into at least part of the second end cover 2100, enhancing the bonding force between the second bearing 2300 and the second end cover 2100 and reducing the number of components.

[0059] The second iron core 2200 is disposed on the second end cover 2100, that is, the second iron core 2200 is fixed on the second end cover 2100. There are also various connection and fixing methods between the second iron core 2200 and the second end cover 2100. In this embodiment, the second end cover 2100 and the second iron core 2200 are injection-molded and connected, enhancing the bonding force between the second end cover 2100 and the second iron core 2200 and reducing the number of components. For example, the second bearing 2300 and the second iron core 2200 can be placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the second end cover 2100 and the second end cover 2100 is combined with the second bearing 2300 and the second iron core 2200.

[0060] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. An axial flux motor, characterized in that, Comprising: A first stator (1000); A second stator (2000); and A rotor (3000) disposed between the first stator (1000) and the second stator (2000), the rotor (3000) includes a support frame (3300), a first Halbach magnet array (3100) and a second Halbach magnet array (3200), the first Halbach magnet array (3100) and the second Halbach magnet array (3200) are respectively disposed on the support frame (3300), the magnetic field intensity of the first Halbach magnet array (3100) facing the first stator (1000) is greater than the magnetic field intensity facing away from the first stator (1000), and the magnetic field intensity of the second Halbach magnet array (3200) facing the second stator (2000) is greater than the magnetic field intensity facing away from the second stator (2000).

2. The axial flux motor according to claim 1, characterized in that, The first Halbach magnet array (3100) and the second Halbach magnet array (3200) are arranged alternately along the axial direction of the axial flux motor.

3. The axial flux motor according to claim 2, characterized in that, The first Halbach magnet array (3100) is disposed on one axial side of the support frame (3300), and the second Halbach magnet array (3200) is disposed on the other axial side of the support frame (3300).

4. The axial flux motor according to claim 1, wherein The support frame (3300) and the first Halbach magnet array (3100) are injection-molded and connected; And / or, the support frame (3300) and the second Halbach magnet array (3200) are injection-molded and connected.

5. The axial flux motor according to claim 1, characterized in that The first Halbach magnet array (3100) includes a plurality of first magnets (3110), and the plurality of first magnets (3110) are distributed alternately in a ring shape; And / or, the second Halbach magnet array (3200) includes a plurality of second magnets (3210), and the plurality of second magnets (3210) are distributed alternately in a ring shape.

6. The axial flux motor according to claim 5, characterized in that, The first magnets (3110) of the first Halbach magnet array (3100) and the second magnets (3210) of the second Halbach magnet array (3200) are arranged staggeredly along the circumferential direction of the rotor (3000).

7. The axial flux motor according to claim 6, wherein, The stagger angle between the first magnet (3110) and the second magnet (3210) is α, satisfying α = (360 / n), where n is the least common multiple of the number of poles and the number of slots of the axial flux motor.

8. The axial flux motor according to claim 1, characterized in that, The axial flux motor further includes a rotating shaft (4000), the rotating shaft (4000) passes through the first stator (1000), the rotor (3000) and the second stator (2000), and the rotating shaft (4000) is fixedly connected to the rotor (3000).

9. The axial flux motor according to claim 8, characterized in that, The support frame (3300) and the rotating shaft (4000) are injection-molded and connected.

10. The axial flux motor according to claim 8, characterized in that, The first stator (1000) includes a first end cover (1100), a first iron core (1200) and a first bearing (1300), the first iron core (1200) and the first bearing (1300) are disposed on the first end cover (1100), and the rotating shaft (4000) passes through the first bearing (1300).

11. The axial flux motor according to claim 10, wherein The first end cap (1100) and the first bearing (1300) are injection-molded and connected; and / or, the first end cap (1100) and the first iron core (1200) are injection-molded and connected.

12. The axial flux motor according to claim 8, wherein, The second stator (2000) includes a second end cap (2100), a second iron core (2200), and a second bearing (2300). The second iron core (2200) and the second bearing (2300) are disposed on the second end cap (2100), and the rotating shaft (4000) passes through the second bearing (2300).

13. The axial flux motor according to claim 12, wherein The second end cap (2100) and the second bearing (2300) are injection-molded and connected; and / or the second end cap (2100) and the second iron core (2200) are injection-molded and connected.

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