A stator-rotor combination structure and axial flux motor

Abstract

The present invention discloses a stator-rotor combination structure and an axial flux motor, relating to the field of motor technology. The structure comprises two symmetrically arranged stators and a rotor mounted between the two stators. The stator and rotor share a common rotational axis. The stator comprises slotted magnetic poles, a stator shaft seat, a yoke support, and a winding structure, while the rotor comprises a magnetic core and a rotor disk. Existing switched reluctance motors are mostly radial flux motors, resulting in a larger motor diameter. The present invention utilizes a specific stator and rotor combination structure, resulting in a smaller axial flux motor. Given the same motor outer diameter, the present invention's axial flux motor exhibits greater torque and power, while also exhibiting excellent heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator-rotor combination structure and an axial flux motor. Background Art

[0002] Existing motor heat dissipation mainly focuses on improving the heat dissipation capacity of the motor body and the cooling medium, such as increasing the surface heat transfer coefficient of the motor body and increasing the contact area with the cooling medium. Typical methods to improve the cooling capacity of the motor include increasing the area of ​​the fins on the casing in natural cooling and their number in natural convection to increase the contact surface area between the motor and the ambient air, and improving the design of the cooling pipes of different water / oil cooling to increase the heat transfer coefficient between the motor and the coolant, or increasing the contact surface area.

[0003] While these technical solutions have improved the motor's heat dissipation capacity to a certain extent, the primary factor limiting the insulation material's service life and the motor's maximum power output remains the coil temperature within the slots. If the heat generated within the slots can be effectively dissipated to a greater extent into the cooling medium, the motor's thermal environment can be significantly improved, significantly extending its service life and increasing its power output. This can also reduce reliance on additional water / oil cooling equipment. Furthermore, the motor structure of the present invention features axial flux characteristics, which can enhance the air gap flux density compared to conventional radial flux motors. Summary of the Invention

[0004] An object of the present invention is to provide a stator-rotor combination structure, wherein a nested winding structure is used in the stator to help dissipate heat from the winding coil, and the rotor also functions as a cooling fan.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] The present invention provides a stator-rotor combination structure, which includes two symmetrically arranged stators and a rotor installed between the two stators, wherein the stators and rotor have a common rotation axis, and the stator includes:

[0007] An even number of slot-type magnetic poles are distributed in a circular array with the rotation axis as the centerline, and have a fan-shaped projection on a plane perpendicular to the rotation axis and have grooves facing the slot-type magnetic poles of the other stator;

[0008] A stator shaft seat is coaxially arranged with the rotating axis and is used for fixing and assembling the yoke bracket and the slot-shaped magnetic pole;

[0009] A yoke bracket includes a cylindrical yoke radially connecting the slot-shaped magnetic poles and the stator shaft seat, and also includes a cylindrical yoke coaxially arranged with the cylindrical yoke; wherein two collinear yoke brackets on the same stator constitute a yoke bracket group, and the slot-shaped magnetic poles connected thereto constitute a slot-shaped magnetic pole group;

[0010] The winding structure includes a coil disposed on each yoke support group, wherein the coil is wound on the yoke support group under the condition that the direction of the current flowing through the coil remains the same, the coil is fully and evenly wound on each cylindrical yoke and cylindrical yoke in the yoke support group, and each coil wound on the yoke support group has only one pair of power terminals;

[0011] The rotor comprises:

[0012] An even number of magnetic cores are distributed in a circular array with the rotation axis as the centerline, each magnetic core is vertically installed on the rotor disk and can pass through the grooves of the slotted magnetic poles along the rotation trajectory when the rotor disk rotates;

[0013] The rotor disk can rotate freely around the rotating axis and is provided with a through slot for assembling the magnetic core; a transmission shaft is provided at the center of the rotor disk, the transmission shaft passes through the rotor disk and rotates synchronously with the rotor disk, and the two ends of the transmission shaft pass through the stator shaft seats on both sides of the rotor disk and rotate in cooperation with the stator shaft seats; the rotor disk is provided with ventilation openings facing the stators on both sides thereof along the circumferential direction.

[0014] As a preferred technical solution of the present invention, the central angle of the slot-shaped magnetic pole is 30°, and the angle between adjacent slot-shaped magnetic poles on the same stator is also 30°.

[0015] As a preferred technical solution of the present invention, the groove is in a fan-shaped ring shape concentric with the slot-shaped magnetic pole.

[0016] As a preferred technical solution of the present invention, each of the yoke brackets includes at least one cylindrical yoke coaxially arranged with the cylindrical yoke, and the cylindrical yokes are nested with each other. A threading hole for the coil to pass through is opened at one end of the cylindrical yoke, so that the coil can be fully and evenly wound between the cylindrical yokes or between the cylindrical yoke and the cylindrical yoke.

[0017] As a preferred technical solution of the present invention, the coils wound on the two magnetic yoke supports in the same magnetic yoke support group are arranged to bypass the stator shaft seat from one side when passing through the stator shaft seat.

[0018] As a preferred technical solution of the present invention, the vents are evenly arranged with four, and each vent has a relative oblique surface in the circumferential direction of the rotor disk, which can axially push the airflow through the rotor disk when the rotor disk rotates.

[0019] As a preferred technical solution of the present invention, the end of the cylindrical magnetic yoke is provided with a rib for limiting the coil.

[0020] As a preferred technical solution of the present invention, the slot-type magnetic poles, the magnetic yoke bracket and the magnetic conductive core all adopt a layered magnetic isolation design.

[0021] As a preferred technical solution of the present invention, a permanent magnet is fixedly embedded in the permeable core, and the NS properties of the magnetic poles of the permanent magnet are opposite to the NS properties of the slot-type magnetic poles.

[0022] Another object of the present invention is to provide an axial flux motor that has the function of reducing coil heating and making the stator have a good heat dissipation structure.

[0023] In order to achieve this object, the present invention adopts the following technical solutions:

[0024] An axial flux motor comprises the above-mentioned stator-rotor combination structure.

[0025] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0026] 1. Most existing switched reluctance motors are radial flux motors, which make the motor diameter larger; the axial flux switched reluctance motor of the present invention can reduce the motor volume; under the condition of the same motor outer diameter, the axial flux motor of the present invention has greater torque.

[0027] 2. The slot-type magnetic poles in the present invention enable the motor to have a larger air gap, which can store more energy and make the motor have greater power.

[0028] 3. The present invention has good heat dissipation performance, wherein the rotor disk has a fan heat dissipation function, and the nested winding structure helps to dissipate heat from the coil.

[0029] 4. The present invention adopts a multi-stage nested winding structure, which can, on the one hand, maximize the magnetic flux density and enhance the magnetic field strength; on the other hand, it can make full use of the space between the slot-type magnetic poles, and the winding thickness of each stage of the coil is reduced, which is also conducive to improving the heat dissipation effect; and the rotation of the rotor disk is conducive to the introduction of airflow into the gap of the multi-stage nested winding structure, thereby further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] Figure 1 It is a schematic diagram of the stator-rotor combined structure of the present invention.

[0032] Figure 2 yes Figure 1 Schematic diagram of the structure of the stator.

[0033] Figure 3 It is a schematic diagram of the stator unassembled winding structure in the present invention.

[0034] Figure 4 It is an overall schematic diagram of the winding structure in the present invention.

[0035] Figure 5 It is a schematic diagram of a single winding structure in the present invention.

[0036] Figure 6 It is a schematic diagram of the current direction in the winding structure.

[0037] Figure 7 It is a structural schematic diagram of the rotor in the present invention.

[0038] Figure 8 This is one of the schematic cross-sectional views of the stator and rotor combination in the present invention.

[0039] Figure 9 This is the second schematic cross-sectional view of the stator and rotor combination in the present invention.

[0040] Figure 10 This is the third schematic cross-sectional view of the stator and rotor combination in the present invention.

[0041] Figure 11 It is a schematic diagram of the layered structure of the magnetic yoke bracket and the slot-type magnetic pole in the present invention.

[0042] Figure 12 It is a schematic diagram of the layered structure of the magnetic conductive core of the present invention.

[0043] In the picture:

[0044] 100, stator, 200, rotor, 300, rotating axis;

[0045] 110, slot-type magnetic pole, 111, groove, 110S, slot-type magnetic pole group, P1, sector ring projection, 120, stator shaft seat, 130, yoke bracket, 131, cylindrical yoke, 132, cylindrical yoke, 133, threading hole, 134, rib, 130S, yoke bracket group, 140, winding structure, 141, coil, 142, power terminal;

[0046] 210. Permeable magnetic core; 220. Rotor disk; 221. Through slot; 222. Transmission shaft; 223. Ventilation port; 224. Magnetic isolation layer. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0050] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0051] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Example

[0052] like Figures 1-12The stator-rotor combination structure shown in FIG. 1 includes two symmetrically arranged stators 100 and a rotor 200 installed between the two stators 100 . The stators 100 and the rotor 200 have a common rotation axis 300 . The stator 100 includes:

[0053] An even number of slot-type magnetic poles 110 are distributed in a circular array with the rotation axis 300 as the center line, and have a fan-shaped projection P1 on a plane 400 perpendicular to the rotation axis 300 and a groove 111 of the slot-type magnetic pole 110 facing the other stator 100;

[0054] The stator shaft seat 120 is coaxially arranged with the rotating axis 300 and is used to fix and assemble the yoke bracket 130 and the slot-shaped magnetic pole 110;

[0055] The yoke bracket 130 includes a cylindrical yoke 131 radially connecting the slotted magnetic pole 110 and the stator shaft seat 120, and a cylindrical yoke 132 coaxially arranged with the cylindrical yoke 131. Two collinear yoke brackets 130 on the same stator constitute a yoke bracket group 130S, and the slotted magnetic poles connected thereto constitute the slotted magnetic pole group 110S.

[0056] The winding structure 140 includes a coil 141 disposed on each yoke support assembly 130S. The coil 141 is wound around the yoke support assembly 130S so that the current flowing through the coil 141 remains in the same direction. The coil 141 is fully and evenly wound around each cylindrical yoke 132 and cylindrical yoke 131 within the yoke support assembly 130S. Each coil 141 wound around the yoke support assembly 130S has only one pair of power terminals 142.

[0057] It is worth noting that the purpose of winding the coil 141 on the yoke support group 130S under the condition of maintaining the same current direction is to control the direction of the winding structure 140 on the cylindrical yoke 132 and the cylindrical yoke 131 according to the right-hand screw rule, so that after the stator 100 is energized, a through magnetic pole with one end being an N pole and the other end being an S pole is formed between the slot-type magnetic pole group 110S. For details, please refer to Figure 6 shown.

[0058] The rotor 200 includes:

[0059] An even number of permeable cores 210 are distributed in a circular array with the rotation axis 300 as the centerline. Each permeable core 210 is vertically mounted on the rotor disk 220 and is capable of sequentially passing through the grooves 111 of the slotted magnetic poles 110 along a rotation trajectory when the rotor disk 220 rotates.

[0060] The rotor disk 220 can rotate freely around the rotating axis 300 and is provided with a through slot 221 for assembling the conductive core 210; a transmission shaft 222 is provided at the center of the rotor disk 220, and the transmission shaft 222 passes through the rotor disk 220 and rotates synchronously with the rotor disk 220, and both ends of the transmission shaft 222 pass through the stator shaft seat 120 on both sides of the rotor disk 220 and rotate in cooperation with the stator shaft seat 120; the rotor disk 220 is provided with ventilation openings 223 along the circumferential direction facing the stators 100 on both sides thereof.

[0061] The stator 100 of the present invention includes slot-type magnetic poles 110, a yoke support 130 and a winding structure 140. When the winding structure 140 is energized, a magnetic field is generated to form magnetic poles, thereby generating magnetic force on the permeable core 210 to rotate the rotor disk 220.

[0062] When the magnetic core 210 rotates along with the rotor disk 220 , the magnetic core 210 passes through the groove 111 of the slot-type magnetic pole 110 .

[0063] In a specific embodiment of the present invention, the central angle of the slot-type magnetic pole 110 is 30°, and the angle between adjacent slot-type magnetic poles 110 on the same stator is also 30°. That is, there are six slot-type magnetic poles 110 in total. The slot-type magnetic poles 110 on the same axis are grouped and marked as three groups, namely slot-type magnetic pole groups 110S. For the convenience of subsequent description, the six slot-type magnetic poles 110 are respectively marked as A1 and A2 (coaxial), B1 and B2 (coaxial), and C1 and C2 (coaxial).

[0064] In the present invention, the winding structure 140 is respectively wound on the yoke bracket group 130S between A1-A2, B1-B2, and C1-C2, that is, between A1-A2, between B1-B2, and between C1-C2. By controlling the current in the coil 141 to maintain the same direction, the stator 100 can form through magnetic poles in the directions of A1-A2, B1-B2, and C1-C2, as shown in FIG. Figure 5 as well as Figure 6 As shown, current flows into one power terminal 142 and flows out from the other power terminal 142, so that the stator 100 winding structure as a whole forms a magnetic field distribution with an N pole at one end and an S pole at the other end.

[0065] It is worth noting that the groove 111 is in the shape of a fan ring concentric with the slot-type magnetic pole 110, so that a motor air gap is formed between the upper and lower surfaces of the groove 111 and the upper and lower surfaces of the conductive core 210. The structure of the slot-type magnetic pole 110 enables the motor to have a larger air gap, which can store more energy and make the motor have greater power.

[0066] like Figure 3 and Figure 4As shown, each of the yoke brackets 130 includes at least one cylindrical yoke 132 coaxially arranged with the cylindrical yoke 131, and the cylindrical yoke 132 and the cylindrical yoke 131 are nested. A threading hole 133 is provided at one end of the cylindrical yoke 132 for the coil 141 to pass through, so that the coil 141 can be fully and evenly wound between the cylindrical yokes 132 or between the cylindrical yoke 132 and the cylindrical yoke 131. A rib 134 is provided at the end of the cylindrical yoke 132 to limit the coil 141.

[0067] like Figure 5 As shown, the coils 141 wound on the two yoke supports 130 in the same yoke support group 130S are arranged to bypass the stator shaft seat 120 from one side when passing through the stator shaft seat 120 .

[0068] like Figure 7 As shown, the rotor disk 220 is preferably made of non-magnetic material, and the vents 223 have relative oblique surfaces in the circumferential direction of the rotor disk 220. When the rotor disk 220 rotates clockwise or counterclockwise at high speed, it can promote the airflow movement in the axial direction, so that a penetrating airflow is formed inside the motor to dissipate heat from the motor, especially the airflow can be introduced between the cylindrical magnetic yokes 132, thereby enhancing the heat dissipation of the coil 141.

[0069] Based on the aforementioned "M"-shaped structure of the stator 100, the axial airflow passes through the structural gap of the stator 100, which is beneficial to the heat dissipation of the stator 100 as a whole, and due to the nested winding structure design on the yoke bracket 130, when the axial airflow flows past the cylindrical yoke 131 close to the stator shaft seat 120, according to Bernoulli's principle, the airflow speed here is faster and the pressure is lower, thereby leading the airflow inside the cylindrical yoke 132 away from the stator shaft seat 120; further, the cylindrical yoke 132 is not a closed structure, and is provided with a threading hole 133 for the coil 141 to pass through. As the airflow is led out, the pressure decreases, and the airflow with slow flow speed and high pressure on the outside of the cylindrical yoke 132 will enter the interior of the cylindrical yoke 132 along the unclosed threading hole 133, thereby forming convection, which can effectively enhance the overall heat dissipation effect of the winding structure 140.

[0070] A magnetic isolation layer 224 is provided in the slots 221 of the rotor disk 220. This layer concentrates magnetic flux lines on the permeable core 210, preventing them from entering the rotor disk 220 and reducing magnetic losses. Furthermore, a stator bearing is provided within the stator shaft seat 120, and a magnetic isolation layer 224 is also provided between the bearing outer ring and the stator shaft seat 120 to prevent magnetic flux lines from entering the transmission shaft 222.

[0071] In order to form a uniform air gap between the conductive core 210 and the groove 111 when the conductive core 210 passes through the groove 111 of the slot-type magnetic pole 110, the conductive core 210 is configured to be a fan-shaped ring similar to the groove 111. The curvature of each conductive core 210 is 30°, and the conductive cores 210 are spaced 60° apart, that is, there are four conductive cores 210 in the circumferential direction. For the sake of convenience, they are labeled a, b, c, and d respectively.

[0072] In order to further reduce eddy current loss, the slot-type magnetic pole 110 , the magnetic yoke bracket 130 and the magnetic permeable core 210 all adopt a layered magnetic isolation design.

[0073] When the winding structures 140 on the two stators A1-A2, B1-B2, and C1-C2 are energized in sequence, NS pole magnetic fields will be formed in sequence on A1-A2, B1-B2, and C1-C2. Figure 8 、 Figure 9 and Figure 10 As shown in the stator and rotor cross-section diagram, taking the rotor movement direction as an example, according to the principle of the shortest magnetic line of force, at a certain moment Figure 8 As shown, the windings C1-C2 are energized to generate magnetic force on the b and d conductive cores, causing the rotor 200 to rotate in the direction shown in the figure; at the next moment, as shown in Figure 9 As shown, the winding B1-B2 is energized to generate magnetic force on the magnetic cores a and c, causing the rotor 200 to continue rotating in the direction shown in the figure; at the next moment, as shown in FIG. Figure 10 As shown, the winding A1-A2 is energized to generate magnetic force on the b and d conductive cores, so that the rotor 200 keeps rotating in the direction shown in the figure; at the next moment, it returns to Figure 8 The state is repeated over and over again, and the rotor 200 continues to rotate under the action of the rotating magnetic fields of the two stators 100.

[0074] If the rotor 200 is pressed Figure 8 The principle is the same as that of reverse movement in the direction marked in FIG. 1 , and it is only necessary to energize in the order of B1-B2, C1-C2, and A1-A2. Thus, the present invention can control the energization sequence of the winding structure 140 to make the motor generate forward and reverse movement.

[0075] In fact, when the slot-shaped magnetic pole 110 of the present invention works in conjunction with the permeable core 210, all three sides of the slot-shaped magnetic pole 110's groove 111 create air gaps with the permeable core 210 passing through it. Compared to conventional switched reluctance motors, which only create a single-sided air gap between the rotor salient pole (top surface) and the magnetic pole, the three-sided air gap structure of the present invention can store more energy, resulting in a higher power output. Furthermore, the slot-shaped magnetic pole 110 has a larger internal and external surface area, which itself facilitates heat dissipation. When the permeable core 210 passes through the slot-shaped magnetic pole 110's groove 111 at high speed, it also accelerates air flow and heat dissipation.

[0076] In an embodiment of the present invention, a permanent magnet 211 is fixedly embedded in the permeable core 210, and the magnetic poles of the permanent magnet 211 are arranged with NS properties opposite to those of the slot-type magnetic poles. This enhances the magnetic flux density and magnetic field strength in the permeable core 210, thereby making the motor a permanent magnet motor. Example

[0077] An embodiment of the present invention further provides an axial flux motor, comprising the stator-rotor combination structure of embodiment 1.

[0078] All thread designs and components that cooperate with the threads in this article, in addition to having the function of connection and fixing, also have the function of combining and installing components so that the entire motor can be assembled smoothly.

[0079] In this motor, the relevant structural dimensions of the stator and rotor can be adjusted as needed to meet the installation requirements of spaces of different sizes.

[0080] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A stator-rotor combination structure comprising two symmetrically arranged stators and a rotor installed between the two stators, characterized in that: The stator and the rotor have a common rotation axis, and the stator includes: An even number of slot-type magnetic poles are distributed in a circular array with the rotation axis as the centerline, and have a fan-shaped projection on a plane perpendicular to the rotation axis and have grooves facing the slot-type magnetic poles of the other stator; A stator shaft seat is coaxially arranged with the rotating axis and is used for fixing and assembling the yoke bracket and the slot-shaped magnetic pole; A yoke bracket includes a cylindrical yoke radially connecting the slot-shaped magnetic poles and the stator shaft seat, and also includes a cylindrical yoke coaxially arranged with the cylindrical yoke; wherein two collinear yoke brackets on the same stator constitute a yoke bracket group, and the slot-shaped magnetic poles connected thereto constitute a slot-shaped magnetic pole group; The winding structure includes a coil disposed on each yoke support group, wherein the coil is wound on the yoke support group under the condition that the direction of the current flowing through the coil remains the same, the coil is fully and evenly wound on each cylindrical yoke and cylindrical yoke in the yoke support group, and each coil wound on the yoke support group has only one pair of power terminals; The rotor comprises: An even number of magnetic cores are distributed in a circular array with the rotation axis as the centerline, each magnetic core is vertically installed on the rotor disk and can pass through the grooves of the slotted magnetic poles along the rotation trajectory when the rotor disk rotates; The rotor disk can rotate freely around the rotating axis and is provided with a through slot for assembling the magnetic core; a transmission shaft is provided at the center of the rotor disk, the transmission shaft passes through the rotor disk and rotates synchronously with the rotor disk, and the two ends of the transmission shaft pass through the stator shaft seats on both sides of the rotor disk and rotate in cooperation with the stator shaft seats; the rotor disk is provided with ventilation openings facing the stators on both sides thereof along the circumferential direction.

2. The stator-rotor combination structure according to claim 1, characterized in that: The center angle of the slot-shaped magnetic poles is 30°, and the angle between adjacent slot-shaped magnetic poles on the same stator is also 30°.

3. The stator-rotor combination structure according to claim 1, characterized in that: The groove is in a fan-shaped ring shape concentric with the slot-shaped magnetic pole.

4. The stator-rotor combination structure according to claim 1, characterized in that: Each of the yoke brackets includes at least one cylindrical yoke coaxially arranged with the cylindrical yoke, and the cylindrical yokes are nested with each other. A threading hole for the coil to pass through is opened at one end of the cylindrical yoke, so that the coil can be fully and evenly wound between the cylindrical yokes or between the cylindrical yoke and the cylindrical yoke.

5. The stator-rotor combination structure according to claim 4, characterized in that: The coils wound on the two magnetic yoke supports in the same magnetic yoke support group are arranged to go around one side of the stator shaft seat when passing through the stator shaft seat.

6. The stator-rotor combination structure according to claim 1, characterized in that: There are four vents evenly arranged, and each vent has a relative oblique surface in the circumferential direction of the rotor disk, which can axially push the airflow to penetrate the rotor disk when the rotor disk rotates.

7. The stator-rotor combination structure according to claim 1, characterized in that: The end of the cylindrical magnetic yoke is provided with a rib for limiting the coil.

8. The stator-rotor combination structure according to claim 1, characterized in that: The slot-type magnetic poles, the magnetic yoke bracket and the magnetic conductive core all adopt a layered magnetic isolation design.

9. The stator-rotor combination structure according to claim 1, characterized in that: A permanent magnet is fixedly embedded in the permeable core, and the NS properties of the magnetic poles of the permanent magnet are opposite to the NS properties of the slot-type magnetic poles.

10. An axial flux motor, characterized in that: The stator-rotor combination structure comprises the stator-rotor combination structure according to any one of claims 1 to 8.

Images