CN109004773A - A kind of magnetic steel structure - Google Patents
A kind of magnetic steel structure Download PDFInfo
- Publication number
- CN109004773A CN109004773A CN201811061248.3A CN201811061248A CN109004773A CN 109004773 A CN109004773 A CN 109004773A CN 201811061248 A CN201811061248 A CN 201811061248A CN 109004773 A CN109004773 A CN 109004773A
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- Prior art keywords
- magnet steel
- piece
- magnetize
- length
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention discloses a kind of magnetic steel structures comprising magnetize magnet steel, and the magnet steel that magnetizes is formed after being magnetized by the magnet steel that do not magnetize, and the magnet steel that the do not magnetize magnet steel piece that do not magnetized by muti-piece is bonded by the length for the magnet steel that do not magnetize, width and thickness requirement；Advantage is that the eddy-current loss that the alternating magnetic field generated due to magnet steel by hot-wire coil in magneto is influenced and generated inside it is directly related with induced current and eddy current path length, therefore magnet steel piece bonding is not magnetized into the magnet steel that do not magnetize using muti-piece, it may be reduced by induced current in this way, and reduce eddy current path length, and then the eddy-current loss of magnet steel can be greatly reduced, high temperature and failure of demagnetizing are generated so as to be effectively prevented from magnet steel fever, and the efficiency of magneto can be effectively improved；The magnetic steel structure is suitable for the magneto of the high performance requirements types such as various high frequencies, higher harmonics, high power density.
Description
Technical field
The present invention relates to a kind of accessories of magneto, more particularly, to a kind of magnetic steel structure.
Background technique
It is new energy as new-energy automobile develops to the direction of lightweight, high power, high loss, low vibration and low noise
The magneto of source automobile offer power, it is also necessary to develop to high power density, low-temperature-rise, low volume and light-weighted direction.
The power of magneto is higher, volume is smaller, then the fever of magneto is more serious, therefore this fever to magneto
Harsher requirement is proposed with heatproof.
Magnet steel is to manufacture the indispensable material of magneto, and magnet steel provides magnetic field for magneto, meanwhile, magnet steel also by
The alternating magnetic field that hot-wire coil generates in magneto influences, which can make to generate biggish vortex damage inside magnet steel
Consumption, which can make magnet steel fever generate high temperature and failure of demagnetizing, and can reduce the efficiency of magneto.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of magnetic steel structures, are generated by hot-wire coil in magneto
Alternating magnetic field to influence the eddy-current loss generated small, efficiently avoid magnet steel fever and generate high temperature and failure of demagnetizing, and is effective
Ground improves the efficiency of magneto.
The technical scheme of the invention to solve the technical problem is: a kind of magnetic steel structure, including the magnet steel that magnetizes,
The magnet steel that magnetizes is formed after being magnetized by the magnet steel that do not magnetize, it is characterised in that: the magnet steel that do not magnetize is by muti-piece
The magnet steel piece that do not magnetize is bonded by the length of the magnet steel that do not magnetize, width and thickness requirement.
The described magnet steel piece that do not magnetize for lateral piece, the length of the lateral piece be greater than or equal to 1 millimeter and
Less than or equal to 10 millimeters, equivalent width, thickness and the magnet steel that do not magnetize of width and the magnet steel that do not magnetize
Consistency of thickness, lateral piece described in muti-piece is integral without being intervally arranged and being bonded along its length.It, can in specific design
It is 3 millimeters by the Design of length of lateral piece.
The magnet steel piece that do not magnetize is vertical piece, the length of the vertical piece and the magnet steel that do not magnetize
The length of body is consistent, width is greater than or equal to 1 millimeter and less than or equal to 10 millimeters, thickness and the magnet steel that do not magnetize
Consistency of thickness, vertical piece described in muti-piece are integral without being intervally arranged and being bonded in the width direction.In specific design, can incite somebody to action
The width design of vertical piece is 3 millimeters.
The described magnet steel piece that do not magnetize is grid piece, the length of the grid piece be greater than or equal to 1 millimeter and
It is greater than or equal to 1 millimeter less than or equal to 10 millimeters, width and less than or equal to 10 millimeters, thickness and the magnet steel that do not magnetize
The consistency of thickness of body, grid piece described in muti-piece along its length with width direction by rectangular array mode without being intervally arranged simultaneously
Bonding is integral.In specific design, the length and width of grid piece can be both designed as 3 millimeters, it can also be by grid piece
Design of length be 4 millimeters and be 3 millimeters by width design, the length and width of grid piece can also be designed to other rulers
It is very little.
The length of the grid piece and equivalent width are inconsistent.
The making material of the magnet steel piece that do not magnetize is rare-earth Nd-Fe-B material.It can also be used in actual processing
His high performance permanent-magnet material.
Compared with the prior art, the advantages of the present invention are as follows:
1) since magnet steel is by the vortex that the alternating magnetic field that hot-wire coil in magneto generates is influenced and is generated inside it
Loss is directly related with induced current and eddy current path length, therefore does not magnetize magnet steel piece bonding into the magnetic that do not magnetize using muti-piece
Steel body may be reduced by induced current in this way, and reduce eddy current path length, and then the vortex damage of magnet steel can be greatly reduced
Consumption generates high temperature and failure of demagnetizing so as to be effectively prevented from magnet steel fever, and can effectively improve the effect of magneto
Rate.
2) magnetic steel structure is suitable for the Permanent Magnet and Electric of the high performance requirements types such as various high frequencies, higher harmonics, high power density
Machine.
Detailed description of the invention
Fig. 1 a is the main view of the magnetic steel structure of embodiment one；
Fig. 1 b is the side view of the magnetic steel structure of embodiment one；
Fig. 2 a is the main view of the magnetic steel structure of embodiment two；
Fig. 2 b is the side view of the magnetic steel structure of embodiment two；
Fig. 3 a is the main view of the magnetic steel structure of embodiment three；
Fig. 3 b is the side view of the magnetic steel structure of embodiment three；
Fig. 4 is magnet steel by the vortex that the alternating magnetic field that hot-wire coil in magneto generates is influenced and is generated inside it
Distribution schematic diagram；
Fig. 5 is to be magnetized using different structure, the different number of magnet steel that do not magnetize for not magnetizing magnet steel piece bonding
The case where eddy-current loss of the magnet steel that magnetizes formed afterwards schematic diagram.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one:
A kind of magnetic steel structure that the present embodiment proposes, as illustrated in figs. 1A and ib comprising the magnet steel that magnetizes (does not show in figure
Out), it magnetizes after magnet steel is magnetized by the magnet steel 1 that do not magnetize and is formed, the magnet steel 1 that do not magnetize does not magnetize magnet steel piece by muti-piece by not
It magnetizes length L, the width W of magnet steel 1 and thickness H requires to be bonded using bonding agent.
In the present embodiment, the magnet steel piece that do not magnetize is lateral piece 11, and the length L1 of lateral piece 11 is greater than or equal to 1
Millimeter and be less than or equal to 10 millimeters, width W1 is consistent with the width W of magnet steel 1 that do not magnetize, thickness H 1 and the magnet steel that do not magnetize
1 thickness H is consistent, and muti-piece (being 21 pieces in figure) lateral piece 11 is integral without being intervally arranged and being bonded along its length.Having
It can be 3 millimeters by the Design of length of lateral piece 11 when body designs.
Embodiment two:
A kind of magnetic steel structure that the present embodiment proposes, the magnetic steel structure with embodiment one is not the difference is that magnetize
The structure of magnet steel piece, the magnet steel piece that do not magnetize as shown in Figure 2 a and 2 b, in the present embodiment are vertical piece 12, vertical piece
12 length L2 is consistent with the length L of magnet steel 1 that do not magnetize, width W2 be greater than or equal to 1 millimeter and be less than or equal to 10 millimeters,
Thickness H2 is consistent with the thickness H of magnet steel 1 that do not magnetize, and muti-piece (being 5 pieces in figure) vertical piece 12 is arranged without interval in the width direction
Cloth is simultaneously bonded integral.It can be 3 millimeters by the width design of vertical piece 12 in specific design.
Embodiment three:
A kind of magnetic steel structure that the present embodiment proposes, the difference with the magnetic steel structure of embodiment one or embodiment two
Be not magnetize the structure of magnet steel piece, and the magnet steel piece that do not magnetize as shown in Figure 3a and Figure 3b shows, in the present embodiment is grid piece
13, the length L3 of grid piece 13 are greater than or equal to 1 millimeter and are greater than or equal to 1 millimeter less than or equal to 10 millimeters, width W3
And be less than or equal to 10 millimeters, thickness H3 it is consistent with the thickness H of magnet steel 1 that do not magnetize, muti-piece (in figure be 105 pieces) grid piece
13 is integral without being intervally arranged and being bonded by rectangular array mode with width direction along its length.In specific design, can incite somebody to action
The length and width of grid piece 13 is designed as unanimously such as being both designed as 3 millimeters, can also be 4 by the Design of length of grid piece 13
Millimeter and by width design be 3 millimeters, the length and width of grid piece 13 can also be designed to other sizes.
In above-mentioned each embodiment, the making material for the magnet steel piece that do not magnetize is rare-earth Nd-Fe-B material, in actual processing
When other high performance permanent-magnet materials can also be used；The shape of magnet steel of magnetizing can be the shapes such as rectangle, tile-type or chamfered edge
Shape is rectangle in above three embodiments.
Fig. 4 gives magnet steel by the whirlpool that the alternating magnetic field that hot-wire coil in magneto generates is influenced and is generated inside it
The distribution schematic diagram of stream, Fig. 5 give the magnetic that do not magnetize using different structure, the different number of magnet steel piece bonding that do not magnetize
The case where eddy-current loss of what steel body 1 was formed after magnetizing magnetize magnet steel schematic diagram.In Fig. 5, abscissa indicates laterally to spell
The number of block 11, ordinate indicate that the value of eddy-current loss, circles mark indicate that the number of vertical piece 12 is 1, square marks table
The number for showing vertical piece 12 is 2, and warning triangle indicates that the number of vertical piece 12 is 3.Analysis chart 5, can from Fig. 5
Out, when the number of lateral piece 11 is 1 and the number of vertical piece 12 is also 1, i.e., the feelings for the not no piecemeal of magnet steel 1 that do not magnetize
Condition, eddy-current loss is in 215W or so；When the number of lateral piece 11 is 5 and the number of vertical piece 12 is 1, as embodiment
One structure, eddy-current loss is in 110W or so；When the number of lateral piece 11 is 10 and the number of vertical piece 12 is 1, i.e.,
For the structure of embodiment one, eddy-current loss is lower than 50W；When the number of lateral piece 11 is 15 and the number of vertical piece 12 is 1
When, the as structure of embodiment one, eddy-current loss 30W or so；When the number that the number of lateral piece 11 is 20 and vertical piece 12
When mesh is 1, the as structure of embodiment one, eddy-current loss 15W or so；When the number of lateral piece 11 is 1 and vertical piece 12
Number when being 2, i.e. the structure of embodiment two, eddy-current loss is in 75W or so；When being laterally divided into 5 pieces and being vertically divided into 2 pieces,
I.e. the number of grid piece 13 is 10, is the structure of embodiment three, eddy-current loss is in 55W or so；When transverse direction is divided into 10 pieces and erects
To when being divided into 2 pieces, i.e., the number of grid piece 13 is 20, is the structure of embodiment three, eddy-current loss 40W or so；When transverse direction point
At 15 pieces and when being vertically divided into 2 pieces, i.e., the number of grid piece 13 is 30, is the structure of embodiment three, and eddy-current loss 20W is left
It is right；When being laterally divided into 20 pieces and being vertically divided into 2 pieces, i.e., the number of grid piece 13 is 40, is the structure of embodiment three, vortex
15W or so is lost；When the number of lateral piece 11 is 1 and the number of vertical piece 12 is 3, i.e. the structure of embodiment two, whirlpool
Stream loss is in 40W or so；When being laterally divided into 5 pieces and being vertically divided into 3 pieces, i.e., the number of grid piece 13 is 15, is embodiment
Three structure, eddy-current loss is in 30W or so；When being laterally divided into 10 pieces and being vertically divided into 3 pieces, i.e. the number of grid piece 13 is
30, it is the structure of embodiment three, eddy-current loss 25W or so；When being laterally divided into 15 pieces and being vertically divided into 3 pieces, i.e. grid piece
13 number is 45, is the structure of embodiment three, eddy-current loss 17W or so；When being laterally divided into 20 pieces and being vertically divided into 3 pieces,
I.e. the number of grid piece 13 is 60, is the structure of embodiment three, eddy-current loss 15W or so.For the structure of embodiment one, with
The increase of the number of lateral piece 11, eddy-current loss be substantially reduced；For the structure of embodiment two, with vertical piece 12
The increase of number, eddy-current loss are substantially reduced；For the structure of embodiment three, in the identical situation of vertical piecemeal, with cross
Increase to piecemeal, eddy-current loss decrease.This has absolutely proved that magnetic steel structure of the invention can reduce eddy-current loss, has
Effect ground avoids magnet steel fever generation high temperature and failure of demagnetizing, and effectively improves the efficiency of magneto, is feasible and has
Effect ground.
Claims (6)
1. a kind of magnetic steel structure, including the magnet steel that magnetizes, the magnet steel that magnetizes is formed after being magnetized by the magnet steel that do not magnetize,
Be characterized in that: the magnet steel that do not magnetize is not magnetized length of the magnet steel piece by the magnet steel that do not magnetize, width by muti-piece
Degree and thickness requirement are bonded.
2. a kind of magnetic steel structure according to claim 1, it is characterised in that: described does not magnetize magnet steel piece laterally to spell
Block, the length of the lateral piece are greater than or equal to 1 millimeter and less than or equal to 10 millimeters, width and the magnetic that do not magnetize
The consistency of thickness of the equivalent width of steel body, thickness and the magnet steel that do not magnetize, lateral piece described in muti-piece is along length side
It is intervally arranged and is bonded integral to nothing.
3. a kind of magnetic steel structure according to claim 1, it is characterised in that: the magnet steel piece that do not magnetize is vertical spells
Block, the length of the vertical piece is consistent with the length for the magnet steel that do not magnetize, width is more than or equal to 1 millimeter and small
In or equal to 10 millimeters, the consistency of thickness of thickness and the magnet steel that do not magnetize, vertical piece described in muti-piece is along width side
It is intervally arranged and is bonded integral to nothing.
4. a kind of magnetic steel structure according to claim 1, it is characterised in that: the magnet steel piece that do not magnetize is grid spelling
Block, the length of the grid piece are greater than or equal to 1 millimeter and are greater than or equal to 1 millimeter less than or equal to 10 millimeters, width
And it is less than or equal to the consistency of thickness of 10 millimeters, thickness and the magnet steel that do not magnetize, grid piece is along long described in muti-piece
Degree direction and width direction are integral without being intervally arranged and being bonded by rectangular array mode.
5. a kind of magnetic steel structure according to claim 4, it is characterised in that: the length and width one of the grid piece
It causes or inconsistent.
6. a kind of magnetic steel structure according to any one of claim 1 to 5, it is characterised in that: the magnet steel that do not magnetize
The making material of piece is rare-earth Nd-Fe-B material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061248.3A CN109004773A (en) | 2018-09-12 | 2018-09-12 | A kind of magnetic steel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061248.3A CN109004773A (en) | 2018-09-12 | 2018-09-12 | A kind of magnetic steel structure |
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| Publication Number | Publication Date |
|---|---|
| CN109004773A true CN109004773A (en) | 2018-12-14 |
Family
ID=64591741
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061248.3A Pending CN109004773A (en) | 2018-09-12 | 2018-09-12 | A kind of magnetic steel structure |
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| Country | Link |
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| CN (1) | CN109004773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879058A (en) * | 2019-11-14 | 2020-03-13 | 中国船舶重工集团公司第七0七研究所 | Closed-circuit magnetizing structure for stator magnetic steel of liquid floated gyroscope |
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| CN2508358Y (en) * | 2001-12-24 | 2002-08-28 | 成都希望电子研究所 | Rare-earth permanent magnet |
| US20030201864A1 (en) * | 2000-07-27 | 2003-10-30 | Decristofaro Nicholas J. | High performance bulk metal magnetic component |
| CN203027031U (en) * | 2012-12-14 | 2013-06-26 | 苏州德丰电机有限公司 | Pole and core split structure of permanent magnet motor |
| DE102013205280A1 (en) * | 2013-03-26 | 2014-10-02 | Siemens Aktiengesellschaft | Permanent magnet and method for producing the permanent magnet |
| CN104332263A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Sintering type rare earth permanent magnet capable of reducing eddy-current loss and manufacturing method thereof |
| CN105896773A (en) * | 2016-05-27 | 2016-08-24 | 天津大学 | Slot-type permanent magnet, axial flux permanent magnet motor rotor and radial flux permanent magnet motor rotor |
| CN107425628A (en) * | 2016-05-26 | 2017-12-01 | 包头金山磁材有限公司 | A kind of magneto magnet and production method for reducing eddy-current heating |
| CN209029992U (en) * | 2018-09-12 | 2019-06-25 | 宁波安信数控技术有限公司 | A kind of magnetic steel structure |
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2018
- 2018-09-12 CN CN201811061248.3A patent/CN109004773A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030201864A1 (en) * | 2000-07-27 | 2003-10-30 | Decristofaro Nicholas J. | High performance bulk metal magnetic component |
| CN2508358Y (en) * | 2001-12-24 | 2002-08-28 | 成都希望电子研究所 | Rare-earth permanent magnet |
| CN203027031U (en) * | 2012-12-14 | 2013-06-26 | 苏州德丰电机有限公司 | Pole and core split structure of permanent magnet motor |
| DE102013205280A1 (en) * | 2013-03-26 | 2014-10-02 | Siemens Aktiengesellschaft | Permanent magnet and method for producing the permanent magnet |
| CN104332263A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Sintering type rare earth permanent magnet capable of reducing eddy-current loss and manufacturing method thereof |
| CN107425628A (en) * | 2016-05-26 | 2017-12-01 | 包头金山磁材有限公司 | A kind of magneto magnet and production method for reducing eddy-current heating |
| CN105896773A (en) * | 2016-05-27 | 2016-08-24 | 天津大学 | Slot-type permanent magnet, axial flux permanent magnet motor rotor and radial flux permanent magnet motor rotor |
| CN209029992U (en) * | 2018-09-12 | 2019-06-25 | 宁波安信数控技术有限公司 | A kind of magnetic steel structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879058A (en) * | 2019-11-14 | 2020-03-13 | 中国船舶重工集团公司第七0七研究所 | Closed-circuit magnetizing structure for stator magnetic steel of liquid floated gyroscope |
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