Axial arrangement of multiphase multi-disc co-directional ring winding shaft radial flux permanent magnet motor

Abstract

The application provides an axial arrangement of multiphase multi-disc same-direction ring winding shaft radial flux permanent magnet motor, a same-direction ring winding winding form is adopted on the stator, the positive directions of the coil currents of the corresponding positions of the adjacent stator pairs of the motor are opposite, and the intermediate rotor core of the conventional multi-rotor structure motor with the ring winding is removed; further, a radial rotor is added outside the axial flux motor, the magnetic poles on the radial rotor are axially opposite and circumferentially opposite. The shaft radial flux permanent magnet motor has the advantages that the end portions of the winding can be effectively utilized while the iron loss and the eddy current loss are reduced, and the output torque of the motor is provided.

Description

Technical Field

[0001] This invention relates to a permanent magnet motor, specifically, to a multi-phase, multi-disc, co-directional annular winding axial radial flux permanent magnet motor with axially arranged windings. Background Technology

[0002] Electric drive technology is a crucial foundation for the full electrification of vehicles. The electric drive system is the core power source of electric vehicles, and the in-wheel electric drive system represents the ultimate form of electric drive. The performance of the in-wheel electric motor plays a decisive role in this system. Due to the limited internal space of in-wheel drive systems, the in-wheel motor must simultaneously possess high power density, compact structure, and short axial dimension. Compared to radial motors, axial motors (also called disc motors) have gained rapid application in direct-drive power generation systems, flywheel energy storage, high-precision servo systems, and all-electric propulsion systems due to their advantages such as flat and ultra-thin structure, high power / torque density, high efficiency, low torque ripple, and smooth operation.

[0003] In traditional axial flux motor design, drum windings and toroidal windings are two common winding forms, each with its own unique advantages and disadvantages. When drum windings are applied to multi-disc structures, an N / S pole configuration is typically used. This design allows the magnetic field to form a large loop throughout the entire motor, effectively reducing the amount of rotor core used and thus reducing the overall size of the motor. Figure 1 As shown. However, since only the effective conductor portion embedded in the slots of the drum-shaped winding participates in electromagnetic energy conversion, it is impossible to increase the motor's output power by adding a radial rotor. This leads to an increase in the ineffective length of the winding, which not only occupies additional space but also increases copper losses, limiting the motor's power density. Patent CN118826411A, entitled "A Three-Rotor Permanent Magnet Synchronous Motor with Hybrid Axial and Radial Flux," proposes an improved solution by adding a radial rotor using irregularly shaped windings. However, this approach makes the winding process of the motor windings complex and difficult. Directly adding stator coils to increase the radial rotor not only increases copper losses but also complicates the structure of the stator core.

[0004] While toroidal windings can fully utilize the winding ends in axial-radial hybrid motors, when applied to multi-disc structures, their unique electromagnetic structure makes it impossible to remove the intermediate rotor core during simple stacking. This results in a longer axial length, greater core losses, and consequently lower torque density. Common motor structures include... Figure 2As shown. To improve this situation, patent CN105406669 A, entitled "A Multi-Gap Axial Flux-Magnetic Field Modulated Permanent Magnet Motor," proposes an improved solution: the use of an embedded permanent magnet structure. Compared to a double-sided surface-mounted permanent magnet structure, the embedded permanent magnet structure can provide an axial magnetic circuit that runs through the entire rotor and the air gaps on both sides of the rotor, realizing a closed stator tooth magnetic circuit between the stators, thereby reducing the magnetic resistance on the main magnetic circuit. To further improve the permanent magnet utilization rate and obtain higher torque, each intermediate rotor slot is divided into two rectangular sections of different widths, mimicking the design of a fan-shaped slot. However, this complex design makes it difficult to manufacture the intermediate rotor core using laminated steel, significantly increasing the manufacturing difficulty. Simultaneously, the two stators of the motor are slotted on both sides and employ annular windings surrounding the radial direction, offset sequentially by half a slot pitch mechanical angle relative to the previous stator along the axial direction. The purpose is to reduce magnetic flux leakage by creating new magnetic flux paths for the main magnetic flux and reducing the magnetic resistance of the main magnetic flux path. However, this misaligned design can lead to positioning difficulties in actual manufacturing, increasing assembly complexity and time costs. At the same time, stator misalignment and magnetic circuit asymmetry can cause increased torque pulsation, resulting in a decrease in motor torque compared to a symmetrical stator. This may also generate additional vibration and noise during operation, affecting the smoothness of motor operation and its service life.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an axially arranged multiphase multi-disc co-directional annular winding axial radial flux permanent magnet motor.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] The first aspect provides an axially arranged multi-phase, multi-disc, co-directional annular winding axial-radial flux permanent magnet motor, comprising:

[0009] Two disc-type axial rotors and at least one disc-type intermediate component disposed between the two disc-type axial rotors;

[0010] The disc-shaped intermediate component includes a non-magnetic fixing frame and a plurality of axial permanent magnets I mounted on the non-magnetic fixing frame along the circumferential direction. Each axial permanent magnet I has opposite magnetic poles to its circumferentially adjacent axial permanent magnets, and also has opposite magnetic poles to its axially adjacent axial permanent magnets I located at the same circumferential position.

[0011] Each disc-type axial rotor has several axial permanent magnets II arranged along the circumferential direction on the side facing the disc-type intermediate part. Any two adjacent axial permanent magnets II on the same circumference have opposite magnetic poles, and each axial permanent magnet II has opposite magnetic poles to its axially adjacent axial permanent magnet I located at the same circumferential position.

[0012] Each disc axial rotor is provided with a disc stator between itself and its adjacent disc intermediate and between any two disc intermediates. The disc stator includes a stator core and a co-directional annular winding. Three-phase electricity with opposite positive directions is applied to the co-directional annular winding on the disc stator on both sides of any disc intermediate.

[0013] It also includes several radial rotors, each of which is arranged on the outer side of the circumference of a disc stator. Several radial permanent magnets are installed on each radial rotor along the circumferential direction. The magnetic poles of any two circumferentially adjacent radial permanent magnets are opposite, and the magnetic poles of any two axially adjacent radial permanent magnets are opposite.

[0014] In this invention, a winding configuration with co-directional toroidal windings is employed, where the coil currents at corresponding positions on adjacent stators of the motor are in opposite directions. Furthermore, the intermediate rotor core of traditional multi-rotor motors with toroidal windings is eliminated, retaining only the magnetic poles of the intermediate rotor. Removing the core significantly shortens the motor's axial radius, reduces weight, and increases torque density, while also reducing iron losses and eddy current losses. This design also enhances the motor's layer scalability, providing greater flexibility for the design of multi-layer axial flux motors and further improving torque density.

[0015] This invention adds a radial rotor to the outside of an axial flux motor. The magnetic poles of this radial rotor are respectively matched with the corresponding stator phases to ensure that the radial rotor experiences forces in the same direction. The addition of the radial rotor effectively utilizes the winding ends, fully leverages the magnetic field distribution characteristics of the annular winding, significantly improves the utilization rate of the magnetic circuit, enhances the output capability of electromagnetic torque, and achieves an effective increase in torque density.

[0016] Furthermore, two disc-shaped axial rotors are fixedly connected to the motor shaft via bearings; two radial rotors located at both ends of the axial direction are fixedly connected to the axial rotors via keyways or screws, and the remaining radial rotors are fixedly connected to adjacent disc-shaped intermediate components via the non-magnetic fixing bracket; each disc-shaped stator is fixedly connected to the motor shaft via a fixing component; thus, the axial rotor, radial rotor, and intermediate rotor form an integral structure. This integral rotor structure is connected to the motor shaft via bearings, ensuring the smoothness and reliability of the rotor system during operation. The motor stator is directly connected to the motor shaft via a fixing component, enhancing the stability of the motor structure. This design simplifies the assembly process and improves the maintainability of the motor.

[0017] The second aspect provides a multi-phase, multi-disc, co-directional annular winding axial flux permanent magnet motor, comprising: two disc axial rotors and at least one disc intermediate component disposed between the two disc axial rotors.

[0018] The disc-shaped intermediate component includes a non-magnetic fixing frame and a plurality of axial permanent magnets I mounted on the non-magnetic fixing frame along the circumferential direction. Each axial permanent magnet I has opposite magnetic poles to its circumferentially adjacent axial permanent magnets, and also has opposite magnetic poles to its axially adjacent axial permanent magnets I located at the same circumferential position.

[0019] Each disc-type axial rotor has several axial permanent magnets II arranged along the circumferential direction on the side facing the disc-type intermediate part. Any two adjacent axial permanent magnets II on the same circumference have opposite magnetic poles, and each axial permanent magnet II has opposite magnetic poles to its axially adjacent axial permanent magnet I located at the same circumferential position.

[0020] Each disc axial rotor is provided with a disc stator between itself and its adjacent disc intermediate, as well as between any two disc intermediates. The disc stator includes a stator core and a co-directional annular winding. Three-phase electricity with opposite positive directions is applied to the co-directional annular winding on the disc stator on both sides of any disc intermediate. Attached Figure Description

[0021] Figure 1 It is a multi-disc axial flux structure.

[0022] Figure 2 It is a common structural form in which toroidal windings are used in multi-disc motors.

[0023] Figure 3 It is the overall structure of the axial-radial flux motor described in Example 1.

[0024] Figure 4 This is a cross-sectional view of the axial-radial flux motor described in Embodiment 1.

[0025] Figure 5 This is the axial flux distribution diagram of the shaft-radial flux motor described in Example 1.

[0026] Figure 6 This is a diagram showing the distribution of the intermediate rotor magnetic poles of the axial-radial flux motor described in Example 1.

[0027] Figure 7 This is a magnetic flux distribution diagram of the radial rotor 1 of the shaft-radial flux motor described in Example 1.

[0028] Figure 8 This is a magnetic flux distribution diagram of the radial rotor 2 corresponding to the radial rotor 1 of the shaft-radial flux motor described in Example 1.

[0029] Figure 9 This is a magnetic flux distribution diagram of the radial rotor 2 corresponding to the radial rotor 1 of the shaft-radial flux motor described in Example 1.

[0030] In the diagram: 1. Disc-type axial rotor I; 2. Radial rotor I; 3. Disc-type stator I; 4. Disc-type intermediate component; 5. Radial rotor II; 6. Disc-type stator II; 7. Disc-type axial rotor II; 8. Motor shaft; 9. Non-magnetic mounting bracket; 10. Axial permanent magnet I; 11. Axial permanent magnet II; 12. Radial permanent magnet; 13. Bearing; 14. Stator core; 15. Co-directional annular winding; 16. Magnetic circuit; 17. Mounting component. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0032] Example 1

[0033] This embodiment provides a 15-axis radial flux permanent magnet motor with axially arranged multi-phase, multi-disc, co-directional annular windings, such as... Figures 3-9 As shown, it includes: a disc axial rotor I 1, a disc axial rotor II 7, and a disc intermediate 4 disposed between the disc axial rotor I 1 and the disc axial rotor II 7.

[0034] The disc-shaped intermediate component 4 includes a non-magnetic fixing frame 9 and a plurality of axial permanent magnets I 10 mounted on the non-magnetic fixing frame 9 along the circumferential direction, wherein the magnetic poles of any two adjacent axial permanent magnets I 10 are opposite.

[0035] Both the disc-type axial rotor I 1 and the disc-type axial rotor II 7 have several axial permanent magnets II 11 arranged along the circumferential direction on the side facing the disc-type intermediate part 4. The magnetic poles of any two adjacent axial permanent magnets II 11 on the same circumference are opposite, and the magnetic poles of each axial permanent magnet II 11 are opposite to those of its axially adjacent axial permanent magnet I 10 located at the same circumferential position.

[0036] Specifically, both the axial permanent magnet I 10 and the axial permanent magnet II 11 are permanent magnets with N and N poles arranged along the axial direction.

[0037] Each disc-type axial rotor is provided with a disc-type stator between itself and its adjacent disc-type intermediate component 4, as well as between any two disc-type intermediate components 4, as shown in the figure. The disc-type stator includes disc-type stator I3 and disc-type stator II6. Both disc-type stator I3 and disc-type stator II6 include a stator core 14 and a co-directional annular winding 15. The currents in the co-directional annular winding 15 at corresponding positions of disc-type stator I3 and disc-type stator II6 are in opposite directions, forming armature magnetic fields with opposite rotation directions.

[0038] In practice, the A, B, and C phase currents in the stator co-directional annular winding 15 of the axial flux permanent magnet motor exhibit sinusoidal periodic changes, with a phase angle difference of 120° between them; the motor rotation direction is consistent with the magnetic field rotation direction. Figure 5 The axial magnetic field distribution of the motor is shown.

[0039] The disc-shaped intermediate component 4 forms permanent magnet magnetic fields in opposite directions on both sides. Specifically, the magnetic field passes through the disc-shaped intermediate component 4 from one disc-shaped stator and enters the other disc-shaped stator, forming a large-loop closed magnetic circuit 16. Figure 6 The magnetic pole distribution diagram of the disc-type intermediate component 4 is shown. It can be seen that under the influence of the armature magnetic field and the permanent magnet magnetic field, the electromagnetic forces acting on both sides of the disc-type intermediate component 4 are in the same direction. Therefore, compared with a traditional rotor, removing the iron core of the disc-type intermediate component 4 does not significantly affect the integrity of the magnetic circuit, while effectively shortening the axial length of the motor and reducing iron loss and eddy current loss.

[0040] Furthermore, each disc-type axial rotor forms a small-circuit magnetic circuit 16 with its opposite disc-type stator.

[0041] It should be noted that the permanent magnet magnetic fields on both sides of each disc stator are in opposite directions.

[0042] Furthermore, each of the disc stators is provided with a radial rotor corresponding to its outer circumference, such as... Figure 3-4 As shown, a radial rotor I2 is provided on the outer circumference of the disc stator I3, and a radial rotor II5 is provided on the outer circumference of the disc stator II6.

[0043] A plurality of radial permanent magnets 12 are mounted on the radial rotor I2 and the radial rotor II5 along the circumferential direction. The magnetic poles of any two circumferentially adjacent radial permanent magnets 12 are opposite, and the magnetic poles of the radial permanent magnets 12 at corresponding positions on the radial rotor I2 and the radial rotor II5 are opposite. Specifically, the radial permanent magnets 12 are permanent magnets with their N and S poles arranged radially.

[0044] Figure 7 and Figure 8 The magnetic field distributions of the radial rotor I2 and the radial rotor II5 are shown respectively. Since the current directions of the corresponding positions of the annular windings 15 of the disc stator I3 and the disc stator II6 are opposite, and the magnetic pole polarities of the corresponding positions of the radial rotor I2 and the radial rotor II5 are opposite, the electromagnetic forces generated are in the same direction.

[0045] This design fully utilizes the magnetic field characteristics of the toroidal winding, achieving a hybrid radial-axial flux path, further optimizing the motor's magnetic field distribution, and significantly improving torque density and operating efficiency. The introduction of the radial rotor enables the motor to generate torque simultaneously in both the axial and radial directions, thereby improving the overall performance of the motor.

[0046] like Figure 3-5 As shown, the cross-sectional view of the motor illustrates the arrangement of the axial rotor, radial rotor, and disc-type intermediate component 4. This design allows the motor to fully utilize the axial and radial magnetic field distribution during operation, forming an efficient hybrid flux path.

[0047] In this invention, a winding configuration of unidirectional annular windings 15 is adopted, with the coil currents at corresponding positions on adjacent stators of the motor having opposite positive directions. Furthermore, the disc-shaped intermediate core 4 of a traditional multi-rotor motor with annular windings is removed, retaining only the magnetic poles of the disc-shaped intermediate core 4. Removing the core significantly shortens the axial radius of the motor, reduces weight, and increases torque density, while also reducing iron losses and eddy current losses. This design also enhances the motor's layer scalability, providing greater flexibility for the design of multi-layer axial flux motors and further improving torque density.

[0048] This invention adds a radial rotor to the outside of an axial flux motor. The magnetic poles of the radial rotor are matched with the corresponding stator phases to ensure that the radial rotor experiences forces in the same direction. The addition of the radial rotor effectively utilizes the winding ends, fully leverages the magnetic field distribution characteristics of the annular winding, significantly improves the utilization rate of the magnetic circuit, enhances the output capability of electromagnetic torque, and effectively increases torque density.

[0049] In another embodiment, the axial permanent magnet II 11 is a permanent magnet with its N and S poles arranged axially, and the disk-type intermediate component 4 is an axial permanent magnet I 10 formed by arranging the Hellbeck array, such as... Figure 9 As shown.

[0050] Furthermore, two disc-type axial rotors are fixedly connected to the motor shaft via bearings 14; two radial rotors located at both ends of the axial direction are fixedly connected to the axial rotors via keyways or screws, and the remaining radial rotors are fixedly connected to the adjacent disc-type intermediate parts 4 via the non-magnetic fixing bracket 9; each disc-type stator is fixedly connected to the motor shaft via a fixing member 17. This integral rotor structure is connected to the motor shaft via bearings 14, ensuring the smoothness and reliability of the rotor system during operation. The motor stator is directly connected to the motor shaft via the fixing member 17, enhancing the stability of the motor structure. This design simplifies the assembly process and improves the maintainability of the motor.

[0051] Example 2

[0052] The difference between this embodiment and embodiment 1 is that at least two disc intermediate parts 4 are provided between disc axial rotor I 1 and disc axial rotor II 7;

[0053] The disc-shaped intermediate component 4 includes a non-magnetic fixing frame 9 and a plurality of axial permanent magnets I 10 mounted on the non-magnetic fixing frame 9 in a circumferential direction. Each axial permanent magnet I 10 has opposite magnetic poles to its circumferentially adjacent axial permanent magnets, and also has opposite magnetic poles to its axially adjacent axial permanent magnets I 10 located at the same circumferential position.

[0054] Each disc-type axial rotor is provided with a disc-type stator between itself and its adjacent disc-type intermediate component 4, as well as between any two disc-type intermediate components 4. The disc-type stator includes a stator core 14 and a co-directional annular winding 15. Three-phase electricity with opposite positive directions is applied to the co-directional annular winding 15 on both sides of the disc-type intermediate component 4.

[0055] The number of radial rotors is the same as the number of disc stators. Each radial rotor corresponds to one disc stator and is located on the outer circumference of the disc stator.

[0056] Each radial rotor has several radial permanent magnets 12 installed along the circumferential direction. The magnetic poles of any two circumferentially adjacent radial permanent magnets 12 are opposite, and the magnetic poles of any two axially adjacent radial permanent magnets 12 are also opposite.

[0057] Example 3

[0058] This embodiment provides a multi-phase, multi-disc, co-directional annular winding 15-axial flux permanent magnet motor structure, including: a disc-type intermediate component 4 and a disc-type axial rotor I 1 and a disc-type axial rotor 2 respectively disposed on both sides of the disc-type intermediate component 4. A disc-type stator I 3 is disposed between the disc-type axial rotor 1 and the disc-type intermediate component 4, and a disc-type stator II 6 is disposed between the disc-type axial rotor 2 and the disc-type intermediate component 4.

[0059] The disc stator I 3 and the disc stator II 6 are respectively provided with stator core 14 and co-directional annular winding 15. The co-directional annular winding 15 at corresponding positions on the disc stator I 3 and the disc stator II 6 are supplied with reverse current to form armature magnetic fields with opposite rotation directions.

[0060] The disc-shaped intermediate component 4 includes a non-magnetic fixing frame 9 and a plurality of axial permanent magnets I 10 mounted on the non-magnetic fixing frame 9 in a circumferential direction. Each axial permanent magnet I 10 has a magnetic pole opposite to that of its circumferentially adjacent axial permanent magnet I 10, and also has a magnetic pole opposite to that of its axially adjacent axial permanent magnet I 10 located at the same circumferential position.

[0061] Furthermore, both the disc-type axial rotor I 1 and the disc-type axial rotor II 7 have several axial permanent magnets II 11 arranged along the circumferential direction on the side facing the disc-type intermediate part 4. The magnetic poles of any two adjacent axial permanent magnets II 11 on the same circumference are opposite, and the magnetic poles of each axial permanent magnet II 11 are opposite to those of its axially adjacent axial permanent magnet I 10 located at the same circumferential position.

[0062] Specifically, both the axial permanent magnet I 10 and the axial permanent magnet II 11 are permanent magnets with N and N poles arranged along the axial direction.

[0063] In practice, the A, B, and C phase currents in the stator co-directional annular winding 15 of the axial flux permanent magnet motor exhibit sinusoidal periodic changes, with a phase angle difference of 120° between them; the motor rotation direction is consistent with the magnetic field rotation direction. Figure 5 The axial magnetic field distribution of the motor is shown.

[0064] The motor employs a winding configuration with a unidirectional toroidal winding 15. The coil currents at corresponding positions on adjacent stators are in opposite directions. Furthermore, the disc-shaped intermediate core 4, a feature of traditional multi-rotor motors with toroidal windings, is eliminated, retaining only the magnetic poles of the disc-shaped intermediate core 4. Removing the core significantly shortens the motor's axial radius, reduces weight, and increases torque density, while also reducing iron losses and eddy current losses. This design also enhances the motor's layer scalability, providing greater flexibility for the design of multi-layer axial flux motors and further improving torque density.

[0065] This embodiment provides a axially arranged multi-phase multi-disc co-directional annular winding 15-axis radial flux permanent magnet motor. Based on the axial flux permanent magnet motor described in Embodiment 1 or Embodiment 2, the axial radial flux permanent magnet motor further adds a radial rotor to the outside of the axial flux motor, thereby effectively utilizing the winding ends to provide the motor's output torque.

[0066] Example 4

[0067] The difference between this embodiment and embodiment 1 is that it includes at least two disc-type intermediate parts 4 and disc-type axial rotors I 1 and 2 respectively disposed on both sides of the axial direction of each disc-type intermediate part 4. A disc-type stator I 3 is disposed between the disc-type axial rotor 1 and the disc-type intermediate part 4, and a disc-type stator II 6 is disposed between the disc-type axial rotor 2 and the disc-type intermediate part 4.

[0068] The disc stator I 3 and the disc stator II 6 are respectively provided with the same-direction annular windings 15. The corresponding positions of the same-direction annular windings 15 on the disc stator I 3 and the disc stator II 6 are energized with opposite currents to form armature magnetic fields with opposite rotation directions. Correspondingly, the magnetic poles of the axial flux at corresponding positions of the axial rotor 1 and the axial rotor 2 are opposite.

[0069] Both the disc-type axial rotor I 1 and the disc-type axial rotor II 7 have several axial permanent magnets II 11 arranged along the circumferential direction on the side facing the disc-type intermediate part 4. The magnetic poles of any two adjacent axial permanent magnets II 11 on the same circumference are opposite, and the magnetic poles of each axial permanent magnet II 11 are opposite to those of its axially adjacent axial permanent magnet I 10 located at the same circumferential position.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A multi-phase, multi-disc, co-directional annular winding axial-radial flux permanent magnet motor, characterized in that, include: Two disc-type axial rotors and at least one disc-type intermediate component disposed between the two disc-type axial rotors; The disc-shaped intermediate component includes a non-magnetic fixing frame and a plurality of axial permanent magnets I mounted on the non-magnetic fixing frame along the circumferential direction. Each axial permanent magnet I has opposite magnetic poles to its circumferentially adjacent axial permanent magnets, and also has opposite magnetic poles to its axially adjacent axial permanent magnets I located at the same circumferential position. Each disc-type axial rotor has several axial permanent magnets II arranged along the circumferential direction on the side facing the disc-type intermediate part. Any two adjacent axial permanent magnets II on the same circumference have opposite magnetic poles, and each axial permanent magnet II has opposite magnetic poles to its axially adjacent axial permanent magnet I located at the same circumferential position. Each disc axial rotor is provided with a disc stator between itself and its adjacent disc intermediate and between any two disc intermediates. The disc stator includes a stator core and a co-directional annular winding. Three-phase electricity with opposite positive directions is applied to the co-directional annular winding on the disc stator on both sides of any disc intermediate. It also includes several radial rotors, each of which is arranged on the outer side of the circumference of a disc stator. Several radial permanent magnets are installed on each radial rotor along the circumferential direction. The magnetic poles of any two circumferentially adjacent radial permanent magnets are opposite, and the magnetic poles of any two axially adjacent radial permanent magnets are opposite.

2. The axially arranged multi-phase, multi-disc, co-directional annular winding axial radial flux permanent magnet motor according to claim 1, characterized in that, Two disc-type axial rotors are fixedly connected to the motor shaft via bearings; two radial rotors located at both ends of the axial direction are fixedly connected to the axial rotors via keyways or screws, and the remaining radial rotors are fixedly connected to the adjacent disc-type intermediate parts via the non-magnetic fixing frame; each disc stator is fixedly connected to the motor shaft via a fixing component.

3. A multi-phase, multi-disc, co-directional annular winding axial radial flux permanent magnet motor according to claim 2, characterized in that, Both the axial permanent magnet I and the axial permanent magnet II are permanent magnets with their N and S poles arranged axially.

4. A multi-phase, multi-disc, co-directional annular winding axial radial flux permanent magnet motor according to claim 2, characterized in that, The axial permanent magnet II is a permanent magnet with the N and N poles arranged along the axial direction, and the disk-type intermediate component is an axial permanent magnet I formed by arranging the Helbeck array.

5. A multi-phase, multi-disc, co-directional annular winding axial radial flux permanent magnet motor according to claim 1, 2, 3, or 4, characterized in that, The radial permanent magnet is a permanent magnet with the N and S poles arranged radially.

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