CN114400801A - Motor magnetic ring based on Halbach arrangement - Google Patents
Motor magnetic ring based on Halbach arrangement Download PDFInfo
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- CN114400801A CN114400801A CN202111673457.5A CN202111673457A CN114400801A CN 114400801 A CN114400801 A CN 114400801A CN 202111673457 A CN202111673457 A CN 202111673457A CN 114400801 A CN114400801 A CN 114400801A
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- magnetic
- magnetic induction
- induction line
- motor
- ring based
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- 230000006698 induction Effects 0.000 claims abstract description 103
- 238000009434 installation Methods 0.000 claims abstract description 25
- 230000005389 magnetism Effects 0.000 claims description 14
- 230000004907 flux Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The invention belongs to the technical field of motor magnet rings, and particularly relates to a motor magnet ring based on Halbach arrangement. The invention provides a Halbach-arrangement-based motor magnetic ring, aiming at the problems that in the prior art, a large number of magnetic induction lines are distributed in an invalid magnetic induction line distribution area, so that the magnetic field intensity is to be improved, and the motor power also has a further improved space, the Halbach-arrangement-based motor magnetic ring comprises at least two opposite magnetic shoes, an installation space for installing a rotor is arranged between the magnetic shoes, the outer sides of the magnetic shoes are provided with invalid magnetic induction line distribution areas, the Halbach-arrangement-based motor magnetic ring also comprises at least one magnetic gathering component for improving the magnetic induction line density in the installation space, and the direction of the magnetic induction lines in the magnetic gathering component is the same as the direction of the magnetic induction lines in the invalid magnetic induction line distribution areas. The magnetic gathering assembly is arranged, and the magnetic gathering assembly can enable the distribution of magnetic induction lines to be obviously unilateral by changing the distribution of the magnetic induction lines on two sides of the magnetic gathering assembly, so that the density of the magnetic induction lines in an installation space is improved, and the power of a motor is further improved.
Description
Technical Field
The invention belongs to the technical field of motor magnet rings, and particularly relates to a motor magnet ring based on Halbach arrangement.
Background
An electric motor is a device that converts electrical energy into mechanical energy. The working principle of the motor is that the magnetic field exerts force on current to rotate the motor. The motor mainly comprises a stator and a rotor, wherein the stator generates a rotating magnetic field and acts on the rotor to form magnetoelectric power rotating torque, so that the strength of the rotating magnetic field generated by the stator is directly related to the power of the motor.
As shown in fig. 1, the magnetic ring structure of a stator of a motor is a structure of a magnetic ring of a motor, which is commonly known in the prior art, and includes two magnetic shoes which are arranged opposite to each other, wherein an installation space for installing a rotor is provided between the magnetic shoes, an ineffective magnetic induction line distribution region is provided on the outer side of the magnetic shoes, a magnetic induction line emitted from the inner surface of the magnetic shoe penetrates through the installation space to reach the inner surface of another magnetic shoe, a magnetic induction line emitted from the outer surface of the magnetic shoe penetrates through the ineffective magnetic induction line distribution region to reach the outer surface of another magnetic shoe, and the installation space is communicated with the ineffective magnetic induction line distribution region. Because the rotor is arranged in the installation space, only the magnetic induction lines distributed in the installation space can be cut by the electrified coil in the rotating process of the rotor, namely, the magnetic induction lines are effective. And a large number of induction lines are distributed in the distribution area of the ineffective induction lines, and the induction lines cannot be cut by the electrified coils in the rotation process of the rotor, namely the ineffective induction lines are formed.
Therefore, in the prior art, a large number of magnetic induction lines are distributed in an invalid magnetic induction line distribution area, namely, the problem of magnetic leakage exists, the magnetic field strength needs to be improved, and the motor power also has a space for further improvement.
Disclosure of Invention
The invention aims to solve the problems and provides a motor magnetic ring based on Halbach arrangement, which can improve the power of a motor.
The utility model provides a motor magnetic ring based on Halbach arranges, includes two at least looks oppositions magnetic shoe, has the installation space that is used for installing the rotor between the magnetic shoe, and the magnetic shoe outside has the magnetic induction line distribution region of nullifying, and the magnetic induction line that the magnetic shoe internal surface sent runs through the internal surface that installation space reachd another magnetic shoe, and the magnetic induction line that the magnetic shoe surface sent runs through the magnetic induction line distribution region of nullifying reaches the surface of another magnetic shoe, installation space and nullifying magnetic induction line distribution region are linked together, still include at least one and are used for improving the magnetism and feel line density's in the installation space magnetism and gather magnetic assembly, at least one side of gathering magnetic assembly is located nullifying magnetic induction line distribution region, gather the inside magnetic induction line direction of magnetic assembly and the magnetic induction line direction in the nullifying magnetic induction line distribution region the same.
In the motor magnetic ring based on Halbach arrangement, a plurality of magnetic gathering components are arranged, and one magnetic gathering component is arranged between the end parts of every two adjacent magnetic tiles;
the magnetism gathering assembly is positioned in the invalid magnetic induction line distribution area, and one side surface of the magnetism gathering assembly is attached to the mounting space;
the magnetic shoe is arc-shaped.
In the above-mentioned motor magnetic ring based on Halbach arrangement, the magnetic shoes are provided with two, four, six or eight, and the distance between two adjacent magnetic shoes is equal.
In the above-mentioned motor magnetic ring based on Halbach arranges, the magnetic shoe is equipped with two, gather the magnetic unit and be equipped with two and the symmetry sets up in the magnetic shoe both sides.
In the above-mentioned motor magnetic ring based on Halbach arranges, gather magnetism subassembly and include the main magnetic source that at least one inside magnetic induction line direction is the same with the magnetic induction line direction in the invalid magnetic induction line distribution region, main magnetic source is permanent magnet or magnetic induction coil.
In the motor magnetic ring based on Halbach arrangement, at least one group of auxiliary magnetic sources are symmetrically arranged on two sides of the main magnetic source, and the magnetic induction line directions in the two auxiliary magnetic sources in the same group are symmetrical along the magnetic induction line direction in the main magnetic source.
In the motor magnetic ring based on Halbach arrangement, included angles formed by the directions of magnetic induction lines in two adjacent groups of auxiliary magnetic sources are equal.
In the above-mentioned motor magnetic ring based on Halbach arranges, the auxiliary magnetic source is only provided with one set, and respectively fixed connection is in the both sides of main magnetic source.
In the motor magnetic ring based on Halbach arrangement, an included angle between the direction of the magnetic induction line in the auxiliary magnetic source and the direction of the magnetic induction line in the main magnetic source is 45 degrees.
In the motor magnetic ring based on Halbach arrangement, the auxiliary magnetic source is a permanent magnet or a magnetic induction coil.
Compared with the prior art, the invention has the advantages that:
1. the magnetic gathering assembly is arranged, and the magnetic gathering assembly can enable the distribution of magnetic induction lines to be obviously unilateral by changing the distribution of the magnetic induction lines on two sides of the magnetic gathering assembly, so that the density of the magnetic induction lines in an installation space is improved, and the power of a motor is further improved.
2. The main magnetic source and the auxiliary magnetic source are magnetic induction coils, so that the magnetic field intensity generated by the main magnetic source and the auxiliary magnetic source has adjustability, and the magnetic field intensity adjusting device is suitable for the use requirements of different motor magnetic rings and expands the applicable scene.
3. The invention has simple structure, lower production cost and easy assembly.
Drawings
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic diagram of the present invention including only the primary magnetic source;
FIG. 3 is a schematic diagram of the construction of the present invention comprising a primary magnetic source and a secondary magnetic source;
FIG. 4 is a schematic structural diagram of the present invention in which the main magnetic source is a magnetic induction coil;
FIG. 5 is a schematic structural diagram of the magnetic induction coil of the present invention with both the main magnetic source and the auxiliary magnetic source;
in the figure: the magnetic shoe comprises a magnetic shoe 1, an installation space 2, a magnetism gathering component 3, an invalid magnetic induction line distribution area 4, a main magnetic source 31 and an auxiliary magnetic source 32.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, a motor magnet ring based on the Halbach arrangement includes at least two opposite magnetic shoes 1, where the magnetic shoes 1 may be circular arc-shaped, and the circular arc-shaped magnetic shoes 1 are convenient to be assembled into a motor. The magnetic shoe comprises magnetic shoes 1, mounting spaces 2 used for mounting a rotor are arranged among the magnetic shoes 1, an invalid magnetic induction line distribution area 4 is arranged on the outer side of each magnetic shoe 1, magnetic induction lines emitted from the inner surfaces of the magnetic shoes 1 penetrate through the mounting spaces 2 to reach the inner surface of the other magnetic shoe 1, magnetic induction lines emitted from the outer surface of each magnetic shoe 1 penetrate through the invalid magnetic induction line distribution area 4 to reach the outer surface of the other magnetic shoe 1, the mounting spaces 2 are communicated with the invalid magnetic induction line distribution area 4, the magnetic shoe further comprises at least one magnetic gathering assembly 3 used for improving the density of the magnetic induction lines in the mounting spaces 2, at least one side of the magnetic gathering assembly 3 is located in the invalid magnetic induction line distribution area 4, and the direction of the magnetic induction lines in the magnetic gathering assembly 3 is the same as the direction of the magnetic induction lines in the invalid magnetic induction line distribution area 4.
The structure shown in fig. 1 is a common motor stator magnetic ring structure in the prior art, that is, compared with the present invention without the magnetism collecting assembly 3, a large number of magnetic induction lines are distributed in the ineffective magnetic induction line distribution area 4. After the magnetism gathering assembly 3 is arranged, the magnetic induction lines passing through the invalid magnetic induction line distribution area 4 are greatly reduced, namely, the convergence effect is realized on the magnetic induction lines, so that the magnetic induction lines penetrating through the installation space 2 are increased. Therefore, the magnetic gathering component 3 is arranged, and the magnetic gathering component 3 can enable the magnetic induction lines to be distributed in an obvious unilateral manner by changing the distribution of the magnetic induction lines on the two sides of the magnetic gathering component 3, so that the density of the magnetic induction lines in the installation space 2 is improved, and the power of the motor is further improved.
Preferably, the magnetic gathering assembly 3 is provided with a plurality of magnetic gathering assemblies 3, and one magnetic gathering assembly 3 is arranged between the end parts of every two adjacent magnetic tiles 1. Therefore, the convergence effect on the magnetic induction lines can be realized in all directions, and experiments prove that the magnetic induction line density in the installation space 2 can be increased after the magnetic gathering components 3 are arranged in all directions, namely the magnetic field intensity is increased to the original magnetic field intensity
About twice as much.
Preferably, the magnetism gathering assembly 3 is located in the invalid magnetic induction line distribution region 4, and one side surface of the magnetism gathering assembly 3 is attached to the installation space 2. This can further improve the degree of convergence of the lines of magnetic induction in the ineffective line-of-induction distribution region 4.
As shown in fig. 2, two, four, six or eight magnetic tiles 1 are provided, and the distance between two adjacent magnetic tiles 1 is equal. That is, the magnetic shoes 1 are uniformly arranged, so that the magnetic induction lines in the installation space 2 can be uniformly distributed after convergence. Preferably, the number of the magnetic shoes 1 is two, and the magnetic gathering assemblies 3 are two and symmetrically arranged on two sides of the magnetic shoes 1.
As shown in fig. 3, the magnetism gathering component 3 includes at least one main magnetic source 31 having an internal magnetic induction line direction the same as the magnetic induction line direction in the invalid magnetic induction line distribution region 4, at least one set of auxiliary magnetic sources 32 are symmetrically disposed on both sides of the main magnetic source 31, and the magnetic induction line directions in the two auxiliary magnetic sources 32 of the same set are symmetrical along the magnetic induction line direction in the main magnetic source 31. Preferably, the included angles formed by the directions of the magnetic induction lines in the two adjacent groups of auxiliary magnetic sources 32 are equal.
As shown in fig. 3, specifically, the auxiliary magnetic sources 32 are only provided in one group and are respectively and fixedly connected to two sides of the main magnetic source 31. Preferably, the angle between the direction of the magnetic induction line in the auxiliary magnetic source 32 and the direction of the magnetic induction line in the main magnetic source 31 is 45 degrees.
The more the auxiliary magnetic sources 32 are provided, the smaller the angle between the adjacent two is changed, and the better the effect of accommodating the magnetic induction lines in the ineffective magnetic induction line distribution region 4 is. Correspondingly, however, the manufacturing difficulty of the magnetic gathering component 3 is increased, and the production cost of the whole magnetic ring is increased. Therefore, in consideration of the balance between the accommodation effect and the production cost, it is preferable that one auxiliary magnetic source 32 is provided on each side of the main magnetic source 31, and the angle between the direction of the magnetic induction line in the auxiliary magnetic source 32 and the direction of the magnetic induction line in the main magnetic source 31 is 45 degrees.
The main magnetic source 31 and the auxiliary magnetic source 32 can be permanent magnets or electric induction coils. Preferably, however, the main magnetic source 31 and the auxiliary magnetic source 32 are both inductive coils. Therefore, the magnetic field intensity generated by the main magnetic source 31 and the auxiliary magnetic source 32 can be adjusted, so that the magnetic field adjustable magnetic motor is suitable for the use requirements of different motor magnetic rings, and the application scene is expanded.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms of the magnetic shoe 1, the installation space 2, the magnetic convergence assembly 3, the null flux distribution region 4, the main magnetic source 31, the auxiliary magnetic source 32, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a motor magnetic ring based on Halbach arranges, includes at least two magnetic shoe (1) that are relative, has between magnetic shoe (1) and is used for installing the installation space (2) of rotor, and magnetic shoe (1) outside has invalid magnetic induction line distribution region (4), and the magnetic induction line that magnetic shoe (1) internal surface sent runs through installation space (2) and arrives the internal surface of another magnetic shoe (1), and the magnetic induction line that magnetic shoe (1) surface sent runs through invalid magnetic induction line distribution region (4) and arrives the external surface of another magnetic shoe (1), installation space (2) are linked together with invalid magnetic induction line distribution region (4), its characterized in that: the magnetic flux concentrator is characterized by further comprising at least one magnetic flux concentrating assembly (3) used for improving the magnetic flux linear density in the installation space (2), wherein at least one side of the magnetic flux concentrating assembly (3) is located in the invalid magnetic flux linear distribution area (4), and the magnetic flux linear direction in the magnetic flux concentrating assembly (3) is the same as that in the invalid magnetic flux linear distribution area (4).
2. A motor magnet ring based on the Halbach arrangement as claimed in claim 1, characterized in that: the magnetic gathering components (3) are provided with a plurality of magnetic gathering components, and one magnetic gathering component (3) is arranged between the end parts of every two adjacent magnetic tiles (1);
the magnetism gathering assembly (3) is positioned in the invalid magnetic induction line distribution region (4) and one side surface of the magnetism gathering assembly (3) is attached to the installation space (2);
the magnetic shoe (1) is arc-shaped.
3. A motor magnet ring based on the Halbach arrangement as claimed in claim 1, characterized in that: the magnetic tiles (1) are provided with two, four, six or eight, and the distance between two adjacent magnetic tiles (1) is equal.
4. A motor magnet ring based on the Halbach arrangement as claimed in claim 3, characterized in that: the magnetic shoe (1) is provided with two magnetic assemblies, and the magnetic gathering assemblies (3) are provided with two magnetic shoes and are symmetrically arranged on two sides of the magnetic shoe (1).
5. A motor magnet ring based on the Halbach arrangement as claimed in claim 1, characterized in that: the magnetism gathering assembly (3) comprises at least one main magnetic source (31) with the direction of internal magnetic induction lines being the same as that of the magnetic induction lines in the invalid magnetic induction line distribution area (4), and the main magnetic source (31) is a permanent magnet or a magnetic induction coil.
6. A motor magnet ring based on the Halbach arrangement as claimed in claim 5, characterized in that: at least one group of auxiliary magnetic sources (32) are symmetrically arranged on two sides of the main magnetic source (31), and the magnetic induction line directions in the two auxiliary magnetic sources (32) in the same group are symmetrical along the magnetic induction line direction in the main magnetic source (31).
7. A motor magnet ring based on the Halbach arrangement as claimed in claim 6, characterized in that: the included angles formed by the directions of the magnetic induction lines in the two adjacent groups of auxiliary magnetic sources (32) are equal.
8. A motor magnet ring based on the Halbach arrangement as claimed in claim 6, characterized in that: the auxiliary magnetic sources (32) are only provided with one group and are respectively and fixedly connected with the two sides of the main magnetic source (31).
9. A motor magnet ring based on the Halbach arrangement as claimed in claim 8, wherein: and an included angle between the direction of the magnetic induction line in the auxiliary magnetic source (32) and the direction of the magnetic induction line in the main magnetic source (31) is 45 degrees.
10. A motor magnet ring based on the Halbach arrangement as claimed in claim 6, characterized in that: the auxiliary magnetic source (32) is a permanent magnet or a magnetic induction coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673457.5A CN114400801B (en) | 2021-12-31 | 2021-12-31 | Motor magnetic ring based on Halbach arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111673457.5A CN114400801B (en) | 2021-12-31 | 2021-12-31 | Motor magnetic ring based on Halbach arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN114400801A true CN114400801A (en) | 2022-04-26 |
| CN114400801B CN114400801B (en) | 2024-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111673457.5A Active CN114400801B (en) | 2021-12-31 | 2021-12-31 | Motor magnetic ring based on Halbach arrangement |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008092754A (en) * | 2006-10-05 | 2008-04-17 | Mitsuba Corp | Structure for preventing rotation of electric motor during suspension |
| JP2013051760A (en) * | 2011-08-30 | 2013-03-14 | Toshiba Corp | Permanent magnet type rotating electrical machine |
| CN110034622A (en) * | 2019-05-07 | 2019-07-19 | 南京航空航天大学 | High-intensitive concentrated magnetic p-m rotor and motor |
| CN213937559U (en) * | 2021-01-06 | 2021-08-10 | 宁波精成车业有限公司 | Halbach array square motor |
| CN214424915U (en) * | 2021-01-08 | 2021-10-19 | 长沙硕博电机有限公司 | Halbach array magnetic-gathering ring magnetic suspension bearing |
| WO2021253763A1 (en) * | 2020-06-18 | 2021-12-23 | 广州星际悦动股份有限公司 | Stator magnetism gathering mechanism, electric motor, and electric toothbrush |
-
2021
- 2021-12-31 CN CN202111673457.5A patent/CN114400801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008092754A (en) * | 2006-10-05 | 2008-04-17 | Mitsuba Corp | Structure for preventing rotation of electric motor during suspension |
| JP2013051760A (en) * | 2011-08-30 | 2013-03-14 | Toshiba Corp | Permanent magnet type rotating electrical machine |
| CN110034622A (en) * | 2019-05-07 | 2019-07-19 | 南京航空航天大学 | High-intensitive concentrated magnetic p-m rotor and motor |
| WO2021253763A1 (en) * | 2020-06-18 | 2021-12-23 | 广州星际悦动股份有限公司 | Stator magnetism gathering mechanism, electric motor, and electric toothbrush |
| CN213937559U (en) * | 2021-01-06 | 2021-08-10 | 宁波精成车业有限公司 | Halbach array square motor |
| CN214424915U (en) * | 2021-01-08 | 2021-10-19 | 长沙硕博电机有限公司 | Halbach array magnetic-gathering ring magnetic suspension bearing |
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| Publication number | Publication date |
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| CN114400801B (en) | 2024-08-13 |
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