Halbach surface-mounted rotor structure meeting generality of magnetic steel and motor thereof

Abstract

The utility model provides a kind of to meet the generality of magnet steel Halbach table surface mounted rotor structure and its motor, surface mounted rotor structure is used for the motor of pole pair number p, including rotor lamination and the Halbach magnet steel array embedded in the outer circumference of rotor lamination along the circumferential direction.The rotor lamination has outer circle, the outer circumference of the rotor lamination is provided with a plurality of interval rib of surrounding array arrangement, the magnetic steel groove with flat bottom edge is formed between adjacent interval rib, the number of the magnetic steel groove is 4×p.The Halbach magnet steel array includes vertical magnet steel and horizontal magnet steel alternately spaced in each magnetic steel groove.The utility model is arranged by above interval rib, the arrangement of Halbach magnet steel array is configured, so that the rotor structure air gap magnetic density waveform sinusoidal degree of above scheme is very high, amplitude is higher, and harmonic content is very small, so it can provide greater motor torque, while it can greatly improve the vibration and noise of motor.

Description

Technical Field

[0001] This utility model relates to the field of motor structure technology, and in particular to a Heilbeck surface-mount rotor structure and motor that meets the universality of magnets. Background Technology

[0002] The statements in this section are merely background information related to this application and do not necessarily constitute prior art.

[0003] With the continuous development of new energy vehicles, the design and optimization of new energy vehicle motors has become an important issue in the automotive industry. The trend of motors becoming faster and more precise is becoming increasingly apparent. In addition to considering the speed and precision of motors, as the demand for motors from new energy vehicles and other fields continues to increase, the production difficulty, cost, and efficiency of motors must also be taken into account.

[0004] The Halbach array is a special permanent magnet structure. By directionally arranging multi-directionally magnetized permanent magnets, it creates a "single-sided enhanced magnetic field" effect: generating a high-amplitude, sinusoidally distributed magnetic field on the rotor air gap side while simultaneously reducing leakage flux on the yoke side. It offers significant advantages such as high power density, lightweight rotor, and low harmonic distortion. However, traditional Halbach rotors face dual bottlenecks in engineering: high manufacturing complexity and poor cost controllability. Specifically, this manifests in the diverse types of magnets, complex magnetization processes, and sensitivity to assembly precision.

[0005] Traditional Halbach arrays require the combination of magnets with multiple magnetization directions (such as radial, tangential, and parallel magnetization), and the magnets are tile-shaped or trapezoidal. For example, a typical three-segment Halbach array contains three independent magnets per pole. The tangential magnets are significantly more difficult to manufacture than radial magnets. Multi-directional magnetization requires specialized tooling and step-by-step magnetization, leading to a decrease in air gap magnetic flux density. Furthermore, due to the strong repulsive forces between the magnets, the positioning of trapezoidal or arc-shaped magnets requires high-precision fixtures. A traditional three-segment Halbach structure can be referenced... Figure 5 As shown, the structure includes rotor laminations 1 and magnets 20. Each magnet is tile-shaped, and each pole has six different magnetization directions. Four of these directions form a 45° angle with the bottom edge of the tile shape, resulting in significant repulsive forces between the magnets. Magnetizing this structure is challenging. Traditional radial magnetization methods produce air gap magnetic flux density waveforms with poor sinusoidality, low amplitude, and high harmonic content, leading to low yield and high cost. Similarly, assembling such Halbach array permanent magnet structures incurs high process and time costs.

[0006] In view of this, how to solve the problems of high manufacturing complexity, poor cost controllability and inability to meet the production needs of motors in the existing traditional Halbach array magnetic pole assembly has become the research topic to be solved by this utility model. Utility Model Content

[0007] The purpose of this invention is to provide a Heilbeck surface-mount rotor structure and its motor that meet the versatility requirements of magnets.

[0008] To achieve the above objectives, the technical solution adopted in the first aspect of this utility model is: to provide a Halebeck surface-mount rotor structure that satisfies the versatility of magnets, for a motor with a pole pair number of p, the innovation of which lies in:

[0009] The surface-mounted rotor structure includes rotor laminations and a Heilbeck magnet array embedded circumferentially around the outer circumference of the rotor laminations.

[0010] The rotor lamination has an outer circle, and multiple spacer ribs arranged in a circumferential array are provided on the outer circumference of the rotor lamination. Adjacent spacer ribs form magnetic grooves with flat bottom edges, and the number of magnetic grooves is 4×p.

[0011] The Heilbeck magnet array includes vertical and horizontal magnets arranged alternately in each magnet slot; the magnetization direction of the vertical magnet is perpendicular to the bottom edge of the corresponding magnet slot, and the magnetization direction of the horizontal magnet is parallel to the bottom edge of the corresponding magnet slot.

[0012] To achieve the above objectives, the technical solution adopted in the second aspect of this utility model is: to provide a motor, wherein the motor uses a Heilbeck surface-mount rotor structure as described in the first aspect of this utility model, which satisfies the universality of magnets.

[0013] The above solution addresses the problems of high manufacturing complexity, poor cost control, and inability to meet motor production requirements in the existing traditional Halbach array magnetic pole assembly. It develops and designs a Halbach surface-mount rotor structure that meets the universality of magnets and a motor using this surface-mount rotor structure. With this new rotor topology, the process bottleneck is broken through while maintaining the Halbach magnetic field enhancement characteristics, reducing the types of magnets and unifying the magnetization direction, simplifying the magnet shape, reducing production and processing costs, and reducing process difficulty. In the surface-mount rotor structure described above, multiple spacer ribs arranged in a circumferential array are provided on the outer circumference of the rotor laminations, and magnet slots with flat bottom edges are formed between adjacent spacer ribs. This design of spacer ribs and magnet slots forms a positioning structure for the assembly of magnets. The spacer ribs provide accurate positioning during the magnet embedding process, preventing magnet displacement during manufacturing and thus reducing process difficulty. The Heilbeck magnet array is configured such that the magnetization direction of the vertical magnets is perpendicular to the bottom edge of their corresponding magnet slots, and the magnetization direction of the horizontal magnets is parallel to the bottom edge of their corresponding magnet slots. This greatly reduces the differences in magnetization direction types, and the magnetization direction is perpendicular to the bottom edge of the magnet from the cross-sectional direction of the magnet, which facilitates production and processing, significantly reduces the amount of material, lowers magnet production and management costs, and makes the magnets assembled with the Heilbeck magnet array more versatile. Furthermore, through the arrangement of the above-mentioned spacer ribs and the configuration of the Heilbeck magnet array, the rotor structure of the above scheme has a high sinusoidal waveform of air gap magnetic flux density, a high amplitude, and a very low harmonic content. Therefore, it can provide greater motor torque and significantly improve motor vibration and noise.

[0014] A further technical solution defines the line connecting the geometric center of the rotor to the center of two adjacent magnet slots as the horizontal axis of the two adjacent magnet slots, and the angle θ between the bottom edge of the magnet slot and the horizontal axis. i for:

[0015] , where i = 2k + j, j takes values ​​between 0 and 1, and k takes values ​​from even numbers of 0, 2, ..., 2 × (p-1);

[0016] The angle θ between the line connecting the center of the vertical or horizontal magnet in two adjacent magnet slots and the geometric center of the rotor and the horizontal axis. PMi for:

[0017] , where i = 2k + j, j takes the value of 0 and 1, k takes the value of positive integers from 1, 2, 3, ..., 2p, k = 1, 2, 3, ..., 2p, j = (0, 1).

[0018] Based on the above, the angle θ of the bottom edge of the magnetic groove relative to the horizontal axisi And the corresponding angle θ of the vertical or horizontal magnets in the magnet slot. PMi The configuration allows the Heilbeck magnet array to be set such that the magnetization direction of the vertical magnets is perpendicular to the bottom edge of their respective magnet slots, and the magnetization direction of the horizontal magnets is parallel to the bottom edge of their respective magnet slots, greatly reducing the differences in magnetization direction types.

[0019] A further technical solution involves using square cross-sections for both the vertical and horizontal magnets, with the magnetization direction of all vertical and horizontal magnets perpendicular to one side of the square cross-section. This design allows for the fulfillment of all magnet types required in the Heilbeck surface-mount rotor structure's magnet array using only one type of magnet. Furthermore, the magnetization direction relative to the bottom edge of the magnet slot is limited to either perpendicular or parallel directions. Since the magnet cross-section is square, the magnetic field direction can be adjusted by changing the relative bonding direction between the magnet and the magnet slot.

[0020] A further technical solution is to change the relative bonding direction of the vertical or horizontal magnets to the magnet slots to adjust the magnetic field direction of the surface-mounted rotor structure. This setting further improves the ease of use and versatility of assembling the Heilbeck magnet array in the surface-mounted rotor structure, greatly reducing the process difficulty.

[0021] A further technical solution is that the height of the protruding spacer rib is d1, and the height of the vertical magnet and the horizontal magnet is d2, wherein the dimension d1 is 5% to 10% of the dimension d2. This height setting of the magnets and spacer ribs ensures that the spacer ribs provide sufficient positioning convenience during assembly without compromising the significant advantages of the Halbach magnet array in terms of high power density, lightweight rotor, and low harmonic distortion, thus maintaining the Halbach magnetic field enhancement characteristics.

[0022] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0023] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0024] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0025] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0026] Due to the application of the above solution, this utility model has the following advantages and effects compared with the prior art:

[0027] 1. The above-mentioned solution of this utility model addresses the problems of high manufacturing complexity, poor cost controllability, and inability to meet the production needs of motors in the existing traditional Halbach array magnetic pole assembly. It develops and designs a Halbach surface-mount rotor structure that meets the universality of magnets and a motor using this surface-mount rotor structure. With this new rotor topology, the process bottleneck is broken through while maintaining the Halbach magnetic field enhancement characteristics, reducing the types of magnets and unifying the magnetization direction, simplifying the shape of magnets, reducing production and processing costs, and reducing process difficulty.

[0028] 2. In the above-mentioned solution of this utility model, multiple spacer ribs arranged in a circumferential array are provided on the outer circumference of the rotor lamination, and a magnet groove with a flat bottom edge is formed between adjacent spacer ribs. This design of spacer ribs and magnet grooves forms a positioning structure for the assembly of magnets. The traditional three-section Halbach structure magnets have a large repulsive force between them, and there is no positioning structure on the rotor lamination, which makes the process very difficult. However, the spacer ribs provided in this utility model can provide accurate positioning for the process of embedding magnets and prevent the displacement of magnets during the manufacturing process, thereby reducing the difficulty of the process.

[0029] 3. In the above-described solution of this utility model, the Halbach magnet array is configured such that the magnetization direction of the vertical magnet is perpendicular to the bottom edge of its corresponding magnet slot, and the magnetization direction of the horizontal magnet is parallel to the bottom edge of its corresponding magnet slot. This greatly reduces the different types of magnetization directions. Compared to existing Halbach structure magnets, where each pole has multiple different magnetization directions (four or five, or even more than six), and multiple magnetization directions form a 45° angle with the tile-shaped bottom edge of the magnet, the magnetization of these magnets is difficult, the yield rate is low, and the cost is high. In contrast, the magnetization direction in this utility model solution is perpendicular to the bottom edge of the magnet from the perspective of the magnet's cross-sectional direction, which facilitates production and processing. It also significantly reduces the amount of material, lowers the production and management costs of magnets, and makes the magnets assembled with the Halbach magnet array more versatile.

[0030] 4. In summary, this utility model, through the arrangement of the above-mentioned spacer ribs and the configuration of the Halbach magnet array, enables the rotor structure of the above scheme to have a high sinusoidal waveform of air gap magnetic flux density, a high amplitude, and a very low harmonic content. Therefore, it can provide greater motor torque and significantly improve motor vibration and noise. This breaks through the process bottleneck while maintaining the Halbach magnetic field enhancement characteristics, making the magnets assembled with Halbach magnet arrays more versatile, further reducing the production and processing costs of Halbach magnet array magnet assembly, and further reducing the process difficulty of Halbach magnet array magnet assembly. Attached Figure Description

[0031] Figure 1 This is a schematic cross-sectional view of the rotor lamination in an embodiment of this utility model;

[0032] Figure 2 This is a cross-sectional schematic diagram of the rotor lamination when the magnet is embedded in the rotor lamination in an embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram showing the magnetization direction of each magnet under each pole pair when the motor has 6 pole pairs (p=6) in this embodiment of the utility model.

[0034] Figure 4 This is a schematic diagram showing the magnetization direction of each pair of lower magnets in a traditional three-section Halcach system.

[0035] Figure 5 This is a schematic diagram showing the angles and dimensions of each pair of poles in an embodiment of this utility model;

[0036] Figure 6 This is a schematic diagram of the unloaded air gap magnetic induction intensity waveform of an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the magnetic induction intensity of each order of the unloaded air gap in an embodiment of this utility model;

[0038] Figure 8 A schematic diagram of the no-load air gap magnetic induction intensity waveform for a rotor with a traditional radial magnetization method;

[0039] Figure 9 This is a schematic diagram of the no-load air gap magnetic induction intensity of rotors using a traditional radial magnetization method.

[0040] The parts shown in the above attached diagram are illustrated below:

[0041] 1. Rotor laminations

[0042] 11. Spacing bars

[0043] 10 Magnetic Steel Channel

[0044] 101 bottom edge

[0045] 2. Heilbeck Magnet Array

[0046] 20 Magnets

[0047] 21 Vertical Magnets

[0048] 22 Horizontal magnets. Detailed Implementation

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0050] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0051] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this case. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0052] This invention aims to address the problems of high manufacturing complexity, poor cost control, and inability to meet the production needs of traditional Halbach array magnetic pole assembly. It develops and designs a Halbach surface-mount rotor structure that meets the universality of magnets and a motor using this surface-mount rotor structure. With this new rotor topology, the process bottleneck is broken through while maintaining the Halbach magnetic field enhancement characteristics, reducing the types of magnets and unifying the magnetization direction, simplifying the magnet shape, reducing production and processing costs, and reducing process difficulty.

[0053] Example 1, see Figure 1 As shown, Embodiment 1 of this utility model discloses a Halbec surface-mounted rotor structure that satisfies the versatility of magnets, for a motor with a pole pair number of p. The surface-mounted rotor structure includes a rotor lamination 1 and a Halbec magnet array 2 embedded circumferentially on the outer circumference of the rotor lamination 1.

[0054] The rotor lamination 1 has an outer circle, and a plurality of spacer ribs 11 arranged in a circumferential array are provided on the outer circumference of the rotor lamination 1. A magnetic steel groove 10 with a flat bottom edge 101 is formed between adjacent spacer ribs 11. The number of magnetic steel grooves 10 is 4×p.

[0055] The Heilbeck magnet array 2 includes vertical magnets 21 and horizontal magnets 22 arranged alternately in each magnet slot 10.

[0056] Define the line connecting the geometric center of the rotor to the center of two adjacent magnet slots 10 as the horizontal axis of the two adjacent magnet slots 10, and define the angle θ between the bottom edge 101 of the two adjacent magnet slots 10 and the horizontal axis. i for:

[0057] , where i = 2k + j, j takes values ​​in 0 and 1, and k takes values ​​from even numbers in 0, 2, ..., 2×(p-1).

[0058] The angle θ between the line connecting the center of the vertical magnet 2 or the horizontal magnet 22 in the two adjacent magnet slots 10 and the geometric center of the rotor and the horizontal axis. PMi for:

[0059] , where i = 2k + j, j takes the value of 0 and 1, k takes the value of positive integers from 1, 2, 3, ..., 2p, k = 1, 2, 3, ..., 2p, j = (0, 1).

[0060] The angle θ of the bottom edge 101 of the magnet groove 10 relative to the horizontal axis is given above. i And the corresponding angle θ of the vertical magnet 2 or the horizontal magnet 22 within the magnet slot 10. PMi The configuration is such that the magnetization direction of the vertical magnet 2 is perpendicular to the bottom edge 101 of the corresponding magnet slot 10, and the magnetization direction of the horizontal magnet 22 is parallel to the bottom edge 101 of the corresponding magnet slot 10.

[0061] Through the implementation of Embodiment 1 of this utility model: The above-mentioned solution of Embodiment 1 of this utility model provides a plurality of spacer ribs 11 arranged in a circumferential array on the outer circumference of the rotor lamination, and forms a magnet groove 10 with a flat bottom edge 101 between adjacent spacer ribs 11. This design of spacer ribs 11 and magnet groove 10 forms a positioning structure for the assembly of magnet 20. The spacer ribs 11 can provide accurate positioning for the process of embedding magnet 20, preventing displacement of magnet 20 during manufacturing, thereby reducing the difficulty of the process; at the same time, the angle θ of the bottom edge 101 in the magnet groove 10 is... i And the angle θ of the vertical magnet 2 or the horizontal magnet 22 in the magnet slot 10. PMiCorresponding designs were also implemented, which configured the Heilbeck magnet array such that the magnetization direction of the vertical magnet 2 is perpendicular to the bottom edge 101 of its corresponding magnet slot 10, and the magnetization direction of the horizontal magnet 22 is parallel to the bottom edge 101 of its corresponding magnet slot 10. This greatly reduces the differences in magnetization direction, and the magnetization direction is perpendicular to the bottom edge 101 of the magnet in terms of the cross-sectional direction. This facilitates production and processing, significantly reduces the amount of materials, lowers the production and management costs of magnets, and makes the magnets assembled in the Heilbeck magnet array more versatile.

[0062] In one embodiment of this utility model, the cross-sections of the vertical magnet 2 and the horizontal magnet 22 are both square, and the magnetization direction of all the vertical magnet 2 and the horizontal magnet 22 is perpendicular to one side of the square cross-section. This design allows for the fulfillment of all magnet types required for the Hellbeck magnet array in the surface-mount rotor structure using only one type of magnet. Furthermore, the magnetization direction relative to the bottom edge 101 of the magnet slot 10 is only either perpendicular or parallel. Since the magnet cross-section is square, the magnetic field direction can be adjusted by changing the relative bonding direction between the magnet and the magnet slot 10.

[0063] In another embodiment of the present invention, the magnetic field direction of the surface-mounted rotor structure is adjusted by changing the relative bonding direction of the vertical magnet 2 or the horizontal magnet 22 with the magnet slot 10. This setting further improves the ease of use and versatility of the surface-mounted rotor structure when assembling the Heilbeck magnet array, and greatly reduces the process difficulty.

[0064] In another embodiment of the present invention, the height of the protrusion of the spacer 11 is d1, and the height of the vertical magnet 2 and the horizontal magnet 22 is d2, wherein the dimension d1 is 5% to 10% of the dimension d2, such as 5%, 6%, 7%, 8%, 9%, 10%, etc. The present invention is not limited thereto. Figure 4 The preferred size ratio shown is 1.39 / 20, or 6.95%. With this height setting of the magnet and the spacer 11, the spacer 11 can provide sufficient positioning convenience during the assembly process without affecting the significant advantages of the Halbach magnet array in terms of high power density, lightweight rotor, and low harmonic distortion, thus maintaining the Halbach magnetic field enhancement characteristics.

[0065] Example 2: This utility model proposes a motor that uses a Heilbeck surface-mount rotor structure as described in Example 1 of this utility model, which satisfies the universality of magnets.

[0066] Through the implementation of Embodiment 2 of this utility model, the motor using the Halbach surface-mount rotor structure that satisfies the universality of magnets can fully meet the increasing production efficiency requirements of motors in new energy vehicles and other fields. While maintaining the Halbach magnetic field enhancement characteristics, it breaks through the process bottleneck and is highly compatible with the application scenarios of motors in new energy vehicles.

[0067] The technical solution of this utility model will now be described in more detail with a more specific embodiment.

[0068] In this detailed embodiment, an electric motor is proposed, which includes components such as a housing, a stator, and a surface-mounted rotor structure. The motor has 6 pole pairs, and the surface-mounted rotor structure includes rotor laminations and a Heilbeck magnet array embedded circumferentially around the outer circumference of the rotor laminations.

[0069] The rotor lamination has an outer circumference, and multiple spacer ribs 11 arranged in a circumferential array are provided on the outer circumference of the rotor lamination. Adjacent spacer ribs 11 form magnetic slots 10 with flat bottom edges 101. The number of magnetic slots 10 is 24. The line connecting the geometric center of the rotor to the center of two adjacent magnetic slots 10 is defined as the horizontal axis of the two adjacent magnetic slots 10. The angle θ between the bottom edge 101 of the two adjacent magnetic slots 10 and the horizontal axis is... i It is 83°;

[0070] The Heilbeck magnet array includes vertical magnets 2 and horizontal magnets 22 arranged alternately in each magnet slot 10, with a total of 24 magnets; the angle θ between the line connecting the center of the vertical magnet 2 or horizontal magnet 22 in two adjacent magnet slots 10 and the geometric center of the rotor and the horizontal axis is... PMi The angle is 8°; the cross-sections of the vertical magnet 2 and the horizontal magnet 22 are both square, and the magnetization direction of all the vertical magnet 2 and the horizontal magnet 22 is perpendicular to one side of the square cross-section. The magnetic field direction of the surface-mounted rotor structure is adjusted by changing the relative bonding direction of the vertical magnet 2 or the horizontal magnet 22 to the magnet slot 10. The magnetization direction of the vertical magnet 2 is perpendicular to the bottom edge 101 of its corresponding magnet slot 10, and the magnetization direction of the horizontal magnet 22 is parallel to the bottom edge 101 of its corresponding magnet slot 10.

[0071] For the surface-mounted rotor structure in this detailed embodiment, it is compared with a traditional radially magnetized rotor structure. Figure 6 , Figure 7 As can be seen from the magnetic flux density waveform and harmonic content of the rotor structure involved in this patent, the air gap magnetic flux density waveform of this rotor structure has a very high sinusoidal degree, a high amplitude, and a very low harmonic content; while the air gap magnetic flux density of the traditional radial magnetization method ( Figure 8 , Figure 9The air gap magnetic flux density waveform of the present invention has poor sinusoidal properties, low amplitude, and high harmonic content. Therefore, the surface-mounted rotor structure involved in this embodiment can provide greater motor torque, significantly improve motor vibration and noise, and maintain Halbach magnetic field enhancement characteristics.

[0072] Through the implementation of the above embodiments of this utility model, and through the arrangement of the spacer ribs 11 and the configuration of the arrangement of the Halbach magnet array, the problems of high manufacturing complexity, poor cost controllability, and inability to meet the production needs of motors faced by the existing traditional Halbach array magnetic pole assembly are solved. While maintaining the Halbach magnetic field enhancement characteristics, the process bottleneck is broken through, making the magnets assembled with Halbach magnet arrays more versatile, further reducing the production and processing costs of Halbach magnet array magnet assembly, and further reducing the process difficulty of Halbach magnet array magnet assembly, thereby achieving the purpose of this utility model.

[0073] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A Halebeck surface-mount rotor structure that satisfies the versatility of magnets, used in motors with p pole pairs, characterized by: The surface-mounted rotor structure includes rotor laminations and a Heilbeck magnet array embedded circumferentially around the outer circumference of the rotor laminations. The rotor lamination has an outer circle, and multiple spacer ribs arranged in a circumferential array are provided on the outer circumference of the rotor lamination. Adjacent spacer ribs form magnetic grooves with flat bottom edges, and the number of magnetic grooves is 4×p. The Heilbeck magnet array includes vertical and horizontal magnets arranged alternately in each magnet slot; the magnetization direction of the vertical magnet is perpendicular to the bottom edge of the corresponding magnet slot, and the magnetization direction of the horizontal magnet is parallel to the bottom edge of the corresponding magnet slot.

2. The Halebeck surface-mount rotor structure that satisfies the versatility of magnets according to claim 1, characterized in that: Define the line connecting the geometric center of the rotor to the center of two adjacent magnet slots as the horizontal axis of those two adjacent magnet slots, and define the angle θ between the bottom edge of the magnet slot and the horizontal axis. i for: , where i = 2k + j, j takes values ​​between 0 and 1, and k takes values ​​from even numbers of 0, 2, ..., 2 × (p-1); The angle θ between the line connecting the center of the vertical or horizontal magnet in two adjacent magnet slots and the geometric center of the rotor and the horizontal axis. PMi for: , where i = 2k + j, j takes values ​​from 0 and 1, and k takes values ​​from positive integers from 1, 2, 3, ..., 2p.

3. The Halebeck surface-mount rotor structure that satisfies the versatility of magnets according to claim 1, characterized in that: The cross-sections of the vertical and horizontal magnets are both square, and the magnetization direction of all the vertical and horizontal magnets is perpendicular to one side of the square cross-section.

4. The Heilbeck surface-mount rotor structure that satisfies the versatility of magnets according to claim 3, characterized in that: The magnetic field direction of the surface-mounted rotor structure can be adjusted by changing the relative bonding direction of the vertical or horizontal magnets to the magnet slots.

5. The Heilbeck surface-mount rotor structure that satisfies the versatility of magnets according to any one of claims 1 to 4, characterized in that: The height of the spacer rib protrusion is d1, and the height of the vertical magnet and the horizontal magnet is d2, wherein the dimension d1 is 5% to 10% of the dimension d2.

6. An electric motor, characterized in that: The motor uses a Heilbeck surface-mount rotor structure as described in any one of claims 1 to 5, which satisfies the versatility of magnets.

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