CN220022437U - Surface type multidirectional mixed magnet structure - Google Patents
Surface type multidirectional mixed magnet structure Download PDFInfo
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- CN220022437U CN220022437U CN202320928108.1U CN202320928108U CN220022437U CN 220022437 U CN220022437 U CN 220022437U CN 202320928108 U CN202320928108 U CN 202320928108U CN 220022437 U CN220022437 U CN 220022437U
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Abstract
The utility model relates to a surface type multidirectional mixed magnet structure, which comprises a bracket, a plurality of radial magnets and a plurality of circumferential magnets, wherein the radial magnets and the circumferential magnets are arranged on the surface of the bracket in an alternating manner, the radial magnets are magnetized in the radial direction, and an included angle theta is formed between the magnetization direction of the circumferential magnets and the tangential direction of the circumference 1 . Compared with the prior art, the utility model can obtain better sine waveform and can improve the utilization rate and power output of the motor.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a surface type multidirectional mixed magnet structure.
Background
With the continuous research of the technology of the permanent magnet material, the performance of the permanent magnet material is continuously improved. The permanent magnet motor has the characteristics of high efficiency, simple structure, high power density and the like, and has wider application fields, in particular to the fields of green environmental protection, new energy and the like.
With the increasing demands for miniaturization and high power density of motors, the diversity of motor control demands is due to the fact that the pole arc coefficient of motor magnets cannot be 1, but is smaller than a value of 1 in order to obtain an air gap field and winding counter potential waveforms meeting certain use requirements. Specifically, the surface magnet structure in the prior art only has a magnet magnetized in a radial direction and has no magnet magnetized in a circumferential direction, so that a magnetic field does not exist in the circumferential direction, but in order to obtain a sine wave magnetic field, the prior art mostly adopts a different concentric structure, and the structure causes an air gap to be enlarged, thereby reducing the performance and the utilization rate of the motor.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a surface type multidirectional mixed magnet structure which can obtain better sine waveforms and improve the utilization rate and power output of a motor.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a surface type multidirectional mixed magnet structure, which comprises a bracket, a plurality of radial magnets and a plurality of circumferential magnets, wherein the radial magnets and the circumferential magnets are arranged on the surface of the bracket in an alternating manner, the radial magnets are magnetized in the radial direction, and an included angle theta is formed between the magnetization direction of the circumferential magnets and the tangential direction of the circumference 1 。
Preferably, the structural sizes of all the radial magnets are identical, and the structural sizes of all the circumferential magnets are identical.
Preferably, the number of the radial magnets and the number of the circumferential magnets are equal and are 2N, and n=1, 2,3 and … … N.
Preferably, the support is in a cylindrical structure, a plurality of radial magnets and a plurality of circumferential magnets are alternately arranged, and intrados of the radial magnets and the circumferential magnets are attached to the outer side surface of the support.
Preferably, the support is in a cylindrical structure, a plurality of radial magnets and a plurality of circumferential magnets are alternately arranged, and extrados of the radial magnets and the circumferential magnets are attached to an inner side surface of the support.
Preferably, the central angles corresponding to the arc edges of the cross sections of all the radial magnets and all the circumferential magnets are smaller than 90 °.
Preferably, the central angles corresponding to the arc edges of the sections of all the radial magnets are equal to 90 °, and the two straight edges of the sections of all the circumferential magnets are arranged in parallel.
Preferably, the magnetization direction of the circumferential magnet forms an included angle theta with the circumferential tangential direction 1 The size of (2) is 0-90 degrees.
Preferably, the radial magnets are concentric circular structures.
Preferably, the circumferential magnets are concentric circular structures.
Compared with the prior art, the utility model has the following advantages:
the multidirectional mixed magnet structure provided by the utility model forms an included angle theta with circumferential tangential direction by adding a plurality of magnetization directions 1 The circumferential magnet of the motor is adjusted in waveform, and the circumferential magnet is added, so that the space utilization rate of the magnet can be improved by utilizing the spare part of the magnetic field in the prior art, and further the performance and the utilization rate of the motor are improved.
Drawings
Fig. 1 is a schematic structural diagram of a surface type multi-directional hybrid magnet structure according to the present embodiment.
Fig. 2 is a schematic structural view of the surface type multi-directional hybrid magnet structure shown in embodiment 1.
Fig. 3 is a schematic structural view of the surface type multi-directional hybrid magnet structure shown in embodiment 2.
Fig. 4 is a schematic structural view of the surface type multi-directional hybrid magnet structure shown in embodiment 3.
Fig. 5 is a schematic structural view of the surface type multi-directional hybrid magnet structure shown in embodiment 4.
The figure indicates:
1. the support, 2, radial magnet, 3, circumferential magnet, 21, first radial magnet, 22, second radial magnet, 23, third radial magnet, 24, fourth radial magnet, 31, first circumferential magnet, 32, second circumferential magnet, 33, third circumferential magnet, 34, fourth circumferential magnet.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
Examples:
referring to fig. 1, the present embodiment provides a surface type multi-directional hybrid magnet structure, which includes a support 1, a plurality of radial magnets 2 and a plurality of circumferential magnets 3 alternately arranged on the surface of the support 1, wherein the radial magnets 2 are magnetized along a radial direction, and an included angle θ is formed between the magnetization direction of the circumferential magnets 3 and a circumferential tangential direction 1 。
Compared with the prior art, the embodiment forms an included angle theta with the circumferential tangential direction by adding a plurality of magnetization directions 1 The circumferential magnet 3 of the motor is provided with the magnetic field waveform which is adjusted, and the circumferential magnet is added, so that the space utilization rate of the magnet can be improved by utilizing the spare part of the magnetic field in the prior art, and the performance and the utilization rate of the motor are further improved.
As an alternative embodiment, the support 1 is a support made of a material having a high magnetic permeability.
As an alternative embodiment, the number of radial magnets 2 and circumferential magnets 3 is equal, and is 2N, n=1, 2,3, … … N.
As an alternative embodiment, the structural sizes of all radial magnets 2 are exactly equal and the structural sizes of all circumferential magnets 3 are exactly equal.
As an alternative embodiment, the radial magnet 2 is of a concentric or non-concentric configuration, and when the radial magnet 2 is of a concentric configuration, the inner and outer arcs of the cross-section of the radial magnet 2 are concentric.
As an alternative embodiment, the circumferential magnet 3 is of a concentric circular structure or a non-concentric circular structure, and when the circumferential magnet 3 is of a concentric circular structure, the inner and outer arcs of the cross section of the circumferential magnet 3 are concentric.
Example 1
Referring to fig. 2, the bracket 1 has a cylindrical structure, a plurality of radial magnets 2 and a plurality of circumferential magnets 3 are alternately arranged, and the intrados of the radial magnets 2 and the circumferential magnets 3 are attached to the outer side surface of the bracket 1, and in this embodiment, n=2, four radial magnets and four circumferential magnets are included.
Wherein the four radial magnets comprise a first radial magnet 21, a second radial magnet 22, a third radial magnet 23 and a fourth radial magnet 24 which are completely equal in structure size, the four circumferential magnets comprise a first circumferential magnet 31, a second circumferential magnet 32, a third circumferential magnet 33 and a fourth circumferential magnet 34 which are completely equal in structure size, and central angles theta corresponding to arcs of cross sections of all radial magnets 2 Central angle theta corresponding to arc of cross section of all circumferential magnets 3 All less than 90 deg..
Example 2
Referring to fig. 3, the bracket 1 has a cylindrical structure, a plurality of radial magnets 2 and a plurality of circumferential magnets 3 are alternately arranged, inner cambered surfaces of the radial magnets 2 and the circumferential magnets 3 are attached to the outer side surface of the bracket 1, central angles corresponding to arc edges of cross sections of all the radial magnets are equal to 90 degrees, and two straight edges of the cross sections of all the circumferential magnets are arranged in parallel.
Example 3
Referring to fig. 4, the bracket 1 has a cylindrical structure, a plurality of radial magnets 2 and a plurality of circumferential magnets 3 are alternately arranged, and the outer arc surfaces of the radial magnets 2 and the circumferential magnets 3 are attached to the inner side surface of the bracket 1, and the arcs of the sections of all radial magnets correspond to a central angle θ 2 Central angle theta corresponding to arc of cross section of all circumferential magnets 3 All less than 90 deg..
Example 4
Referring to fig. 5, the bracket 1 has a cylindrical structure, a plurality of radial magnets 2 and a plurality of circumferential magnets 3 are alternately arranged, and the outer arc surfaces of the radial magnets 2 and the circumferential magnets 3 are attached to the inner side surface of the bracket 1, the central angles corresponding to the arc edges of the cross sections of all the radial magnets are equal to 90 °, and two straight line edges of the cross sections of all the circumferential magnets are arranged in parallel.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The surface type multidirectional mixed magnet structure is characterized by comprising a support (1), a plurality of radial magnets (2) and a plurality of circumferential magnets (3) which are arranged on the surface of the support (1) in an alternating manner, wherein the radial magnets (2) are magnetized in the radial direction, and an included angle theta is formed between the magnetization direction of the circumferential magnets (3) and the circumferential tangential direction 1 。
2. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the structural size of all radial magnets (2) is exactly equal and the structural size of all circumferential magnets (3) is exactly equal.
3. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the number of radial magnets (2) and the number of circumferential magnets (3) are equal, each being 2N, N = 1,2,3, … … N.
4. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the support (1) has a cylindrical structure, a plurality of radial magnets (2) and a plurality of circumferential magnets (3) are alternately arranged, and intrados of the radial magnets (2) and the circumferential magnets (3) are attached to an outer side surface of the support (1).
5. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the bracket (1) is a cylindrical structure, a plurality of radial magnets (2) and a plurality of circumferential magnets (3) are alternately arranged, and extrados of the radial magnets (2) and the circumferential magnets (3) are attached to an inner side surface of the bracket (1).
6. A surface-type multidirectional mixed magnet structure according to any one of claims 4 or 5, wherein the central angles corresponding to the arc edges of the cross-sections of all the radial magnets (2) and all the circumferential magnets (3) are smaller than 90 °.
7. A surface-type multidirectional mixed magnet structure according to any one of claims 4 or 5, wherein the central angles corresponding to the arcuate edges of the cross-sections of all the radial magnets (2) are equal to 90 °, and the two straight edges of the cross-sections of all the circumferential magnets (3) are arranged in parallel.
8. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the magnetization direction of the circumferential magnet (3) forms an angle θ with the circumferential tangential direction 1 The size of (2) is 0-90 degrees.
9. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the radial magnets (2) are concentric.
10. A surface-type multidirectional mixed magnet structure according to claim 1, wherein the circumferential magnets (3) are concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928108.1U CN220022437U (en) | 2023-04-23 | 2023-04-23 | Surface type multidirectional mixed magnet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928108.1U CN220022437U (en) | 2023-04-23 | 2023-04-23 | Surface type multidirectional mixed magnet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220022437U true CN220022437U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320928108.1U Active CN220022437U (en) | 2023-04-23 | 2023-04-23 | Surface type multidirectional mixed magnet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220022437U (en) |
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2023
- 2023-04-23 CN CN202320928108.1U patent/CN220022437U/en active Active
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