CN103368300A - Motor permanent magnet fixing structure, fixing method and motor comprising structure - Google Patents
Motor permanent magnet fixing structure, fixing method and motor comprising structure Download PDFInfo
- Publication number
- CN103368300A CN103368300A CN2012100837712A CN201210083771A CN103368300A CN 103368300 A CN103368300 A CN 103368300A CN 2012100837712 A CN2012100837712 A CN 2012100837712A CN 201210083771 A CN201210083771 A CN 201210083771A CN 103368300 A CN103368300 A CN 103368300A
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- permanent magnet
- expanding
- motor
- fixed structure
- motor permanent
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 47
- 239000004917 carbon fiber Substances 0.000 claims description 47
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 47
- 230000001681 protective effect Effects 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000009955 starching Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000001802 infusion Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 25
- 238000004804 winding Methods 0.000 abstract description 6
- 238000004513 sizing Methods 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 14
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention provides a motor permanent magnet fixing structure, a motor permanent magnet fixing method and a motor comprising the structure. The motor permanent magnet fixing structure comprises a rotor iron core; a permanent magnet covering an outer surface of the rotor core; and a composite layer comprising a spread fiber bundle disposed about the outer surface of the permanent magnet. The fixing method comprises the following steps: step 1, sizing and expanding fiber bundles to form expanded fiber bundles; step 2, winding a plurality of spreading fiber bundles on the outer surface of the permanent magnet to form a fiber preformed body; and 3, forming a composite material layer on the fiber preformed body by adopting a resin film permeation molding process. According to the invention, the problem of magnetic flux leakage caused by overlarge gap between the permanent magnet and the stator winding due to overlarge thickness of the protective layer for protecting the permanent magnet in the prior art can be solved.
Description
Technical field
The present invention relates to machine field, in particular to motor permanent magnet fixed structure, fixing means and the motor that comprises this structure.
Background technology
At present, high-speed electric expreess locomotive is increasingly extensive in the application in commercial use air conditioner field, but is subjected to rotor permanent magnet fixedly poor reliability and the low restriction of permanent magnet tensile strength, and the suffered centrifugal force of permanent magnet must be limited in certain scope, the rotating speed of motor can not be too high, and the external diameter of rotor can not be excessive.So just caused existing high-speed electric expreess locomotive to be difficult to satisfy the commercial use air conditioner requirement more and more higher to motor speed.In order to overcome this difficulty, just need to take effective safeguard measure to permanent magnet, increase the fixing fastness of permanent magnet.
The measure of existing protection permanent magnet has two kinds: a kind of guard method is to adopt carbon fiber colligation permanent magnet; Another kind is to install non-magnetic protective sleeve outside permanent magnet additional.Adopt the method for carbon fiber colligation permanent magnet; carbon fiber bundle can not be piled up blocked up; otherwise can cause stator and rotor gap excessive and leakage field occurs, but the accident that permanent magnet throws away occur again a little less than the protection relative thin to the permanent magnet two-end part in very thin carbon fiber bundle easily.The method of protective sleeve protection permanent magnet is installed in employing additional, also can't avoid the excessive defective of stator and permanent magnet gap, and reliable not to the protection of permanent magnet, large gap can increase magnetic leakage factor, and there is adverse effect in electric efficiency.
Summary of the invention
The motor that the present invention aims to provide a kind of motor permanent magnet fixed structure, fixing means and comprises this structure can reduce the protective layer thickness of permanent magnet surfaces, avoids the problem because of the excesssive gap leakage field between permanent magnet and the stator winding.
To achieve these goals, according to an aspect of the present invention, provide a kind of motor permanent magnet fixed structure, having comprised: rotor core; Permanent magnet covers on the outer surface of rotor core; And composite layer, comprise the expanding fibre bundle that arranges around the permanent magnet outer surface.
Further, the expanding fibre bundle is the expanding carbon fiber bundle.
Further, the width of expanding carbon fiber bundle is 9～11mm.
Further, a plurality of expanding fiber bundle layers overlap mistake and are wrapped in the permanent magnet outer surface.
Further, composite layer also comprises the resin matrix that infiltrates the expanding fibre bundle.
Further, the rotor core sidewall is provided with protuberance, protuberance extends along the rotor core axial direction, protuberance and composite layer inner surface fit, space between composite layer inner surface and the rotor core outer surface is divided into some independently spaces, and permanent magnet is arranged in the separate space.
Further, protuberance is strip projected parts, and length in axial direction is corresponding with rotor core length in axial direction.
Further, protuberance is for sticking on the aluminum strip on its outer wall along the axial direction of rotor core.
Further, the motor permanent magnet fixed structure also comprises protective sleeve, is fixedly connected with the rotor core two ends, compresses composite layer.
According to another aspect of the present invention, provide a kind of motor, comprised aforementioned each motor permanent magnet fixed structure.
According to another aspect of the present invention, provide a kind of fixing means of motor permanent magnet, having comprised: step 1. is carried out the starching expanding with fibre bundle and is processed formation expanding fibre bundle; Step 2. is wrapped in the permanent magnet outer surface with some expanding fibre bundles, forms perform manufacturing; Step 3. adopts the resin film infusion moulding process to form composite layer at perform manufacturing.
Further, the expanding fibre bundle in the step 1 is the expanding carbon fiber bundle.
Further, the width of expanding carbon fiber bundle is 9～11mm.
Further, in the step 2, the expanding fibre bundle adopts stacked staggered colligation mode to be wrapped in the permanent magnet outer surface.
Further, also be included in the rotor core two ends after the step 3 and be fixedly connected with protective sleeve, protective sleeve compresses composite layer.
Use technical scheme of the present invention, at the permanent magnet outer surface composite layer that the expanding fibre bundle forms is set, reduced the thickness of composite layer, and then reduced the gap between permanent magnet and the stator winding, avoided the generation of leakage field phenomenon.
Description of drawings
The Figure of description that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows according to an embodiment of the invention electric machine structure schematic diagram; And
Fig. 2 shows the according to an embodiment of the invention cross sectional representation of motor.
Embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Shown in Fig. 1～2, according to embodiments of the invention, motor comprises rotating shaft 10, rotor core 20, composite layer 30, permanent magnet 40, protective sleeve 50 and protective sleeve 60, and aluminum strip 80.
The rotor core 20 of wherein being made by silicon steel sheet is fixed on the outer surface of machine shaft 10, rotates with machine shaft 10.Permanent magnet 40 covers on the outer surface of rotor core 20, and composite layer 30 is around permanent magnet 40 outer surface settings. Protective sleeve 50,60 is fixed on rotor core 20 two ends, compresses composite layer 30.
Process by carbon fiber bundle being carried out the expanding starching, not only can effectively reduce the thickness of carbon fiber bundle, the carbon fiber quantity that minimizing can't infiltrate, and sizing agent can also as the bridge that connects between carbon fiber and the matrix resin, make the carbon fibre reinforced composite of formation more solid and reliable.
On the basis that has reduced expanding carbon fiber bundle 31 thickness, can adopt stacked staggered colligation mode to expanding carbon fiber bundle 31, effectively increase the tensile strength of carbon fibre reinforced composite all directions.And composite layer 30 integral thickness are controlled, and can reduce the gap between permanent magnet 40 and the stator winding, thereby reduce magnetic leakage factor, improve electric efficiency.The composite layer 30 here is not limited in by expanding carbon fiber bundle 31 and epoxy resin and consists of, and according to actual needs, but expanding carbon fiber bundle 31 can be replaced the non-magnetic material that becomes other expandings, and perhaps epoxy resin being replaced becomes other resins.
The inner surface of the outer surface of permanent magnet 40 and composite layer 30 fits, and the outer surface of the inner surface of permanent magnet 40 and rotor core 20 fits, and forms good matching relationship.20 two end faces of rotor core glued joint the protective sleeve 50,60 that has non-magnet material to make, and are used for compressing the expanding carbon fiber bundle 31 that is positioned at rotor core 20 two ends.The mode that adopts expanding carbon fiber bundle 31 colligations and protective sleeve 50,60 to combine at rotor core 20 two ends can effectively strengthen the reliability at rotor core 20 two ends, prevents that permanent magnet 40 from throwing away.
When assembling permanent magnet 40, at first utilizing starching expanding mechanism that carbon fiber bundle is carried out the starching expanding processes, form expanding carbon fiber bundle 31, the width of the expanding carbon fiber bundle 31 after the processing is 9～11mm, can effectively reduce the thickness of expanding carbon fiber bundle 31, the carbon fiber quantity that minimizing can't infiltrate, the intensity of raising carbon fibre reinforced composite.Then adopt stacked staggered colligation mode to be wrapped in permanent magnet 40 outer surfaces some expanding carbon fiber bundles 31, form the carbon fiber preform.This colligation mode can effectively strengthen the tensile strength of carbon fibre reinforced composite all directions.
After certain thickness expanding carbon fiber bundle 31 has been twined on permanent magnet 40 surfaces, adopt the resin film infusion moulding process, at the high-performance carbon fibre composite material of carbon fiber preform formation take epoxy resin as matrix.Utilize at last two protective sleeves 50 of resin transfer molding processes, 60, splicing is fixed to rotor core 20 two ends, below the composite layer 30 that has cured is pressed in, prevents that the permanent magnet 40 at two ends from throwing away motor. Protective sleeve 50,60 material can be carbon fibre composites, also can be other non-magnet materials.
As can be seen from the above description, the above embodiments of the present invention utilize novel carbon fiber colligation mode to provide reliable safeguard measure for rotor surface-mount type permanent magnet.In the prior art, the carbon fiber that common colligation is used adopts the mode of carbon fiber boundling, carbon fibre composite layer thickness after the colligation is very large like this, and the carbon fiber that is in boundling inside is difficult to infiltrate curing with matrix resin, causes the final carbon fibre composite intensity that forms not high.Technical scheme of the present invention is carried out the processing of starching expanding to the carbon fiber of boundling, so not only can effectively reduce the thickness of carbon fiber bundle, the carbon fiber quantity that minimizing can't infiltrate, sizing agent can also as the bridge that connects between carbon fiber and the matrix resin, make the carbon fibre reinforced composite of formation more reliable.On the basis that has reduced carbon fiber bundle thickness, can adopt stacked staggered colligation mode to carbon fiber bundle, effectively strengthen the tensile strength of carbon fibre reinforced composite all directions.The integral thickness of carbon fibre reinforced composite is controlled, and just can effectively reduce the gap between permanent magnet and the stator winding, thereby reduce magnetic leakage factor, improves electric efficiency.In two ends of rotor; adopt the mode of carbon fibre reinforced composite fabricated; first with two protective sleeves of resin transfer molding technique PTM processing; then be fixed to the rotor core two ends with glue; below the carbon fiber layer that has cured is pressed in; the permanent magnet that prevents two ends throws away motor, has increased the reliability at two ends.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a motor permanent magnet fixed structure is characterized in that, described structure comprises:
Rotor core (20);
Permanent magnet (40) covers on the outer surface of described rotor core (20); And
Composite layer (30) comprises the expanding fibre bundle that arranges around described permanent magnet (40) outer surface.
2. motor permanent magnet fixed structure according to claim 1 is characterized in that, described expanding fibre bundle is expanding carbon fiber bundle (31).
3. motor permanent magnet fixed structure according to claim 2 is characterized in that, the width of described expanding carbon fiber bundle (31) is 9～11mm.
4. each described motor permanent magnet fixed structure is characterized in that according to claim 1～3, and a plurality of described expanding fiber bundle layers overlap mistake and are wrapped in described permanent magnet (40) outer surface.
5. each described motor permanent magnet fixed structure is characterized in that according to claim 1～3, and described composite layer (30) also comprises the resin matrix that infiltrates described expanding fibre bundle.
6. each described motor permanent magnet fixed structure according to claim 1～3, it is characterized in that, described rotor core (20) sidewall is provided with protuberance, described protuberance extends along described rotor core (20) axial direction, described protuberance and described composite layer (30) inner surface fit, space between described composite layer (30) inner surface and described rotor core (20) outer surface is divided into some independently spaces, and described permanent magnet (40) is arranged in the described separate space.
7. motor permanent magnet fixed structure according to claim 6 is characterized in that, described protuberance is strip projected parts, and described strip projected parts length in axial direction is corresponding with described rotor core (20) length in axial direction.
8. motor permanent magnet fixed structure according to claim 6 is characterized in that, described protuberance is for sticking on the aluminum strip (80) on its outer wall along the axial direction of described rotor core (20).
9. each described motor permanent magnet fixed structure according to claim 1～3; it is characterized in that; described motor permanent magnet fixed structure also comprises protective sleeve (50; 60); described protective sleeve (50; 60) be fixedly connected with described rotor core (20) two ends, compress described composite layer (30).
10. a motor comprises the motor permanent magnet fixed structure, it is characterized in that, described motor permanent magnet fixed structure is each described motor permanent magnet fixed structure in the claim 1～9.
11. the fixing means of a motor permanent magnet is characterized in that, comprising:
Step 1. is carried out the starching expanding with fibre bundle and is processed formation expanding fibre bundle;
Step 2. is wrapped in described permanent magnet (40) outer surface with some described expanding fibre bundles, forms perform manufacturing;
Step 3. adopts the resin film infusion moulding process to form described composite layer (30) at described perform manufacturing.
12. the fixing means of described motor permanent magnet is characterized in that according to claim 11, the expanding fibre bundle in the described step 1 is expanding carbon fiber bundle (31).
13. the fixing means of described motor permanent magnet is characterized in that according to claim 12, the width of described expanding carbon fiber bundle (31) is 9～11mm.
14. the fixing means of each described motor permanent magnet is characterized in that according to claim 11～13, the described expanding fibre bundle in the described step 2 adopts stacked staggered colligation mode to be wrapped in described permanent magnet (40) outer surface.
15. the fixing means of each described motor permanent magnet according to claim 11～13; it is characterized in that; also be included in described rotor core (20) two ends after the described step 3 and be fixedly connected with protective sleeve (50; 60); described protective sleeve (50,60) compresses described composite layer (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100837712A CN103368300A (en) | 2012-03-26 | 2012-03-26 | Motor permanent magnet fixing structure, fixing method and motor comprising structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100837712A CN103368300A (en) | 2012-03-26 | 2012-03-26 | Motor permanent magnet fixing structure, fixing method and motor comprising structure |
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| CN103368300A true CN103368300A (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100837712A Pending CN103368300A (en) | 2012-03-26 | 2012-03-26 | Motor permanent magnet fixing structure, fixing method and motor comprising structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595194A (en) * | 2013-11-19 | 2014-02-19 | 江苏航天动力机电有限公司 | Method for bonding magnetic steel piece to high-speed permanent magnet synchronous motor |
| CN105662268A (en) * | 2014-11-20 | 2016-06-15 | 江苏美的清洁电器股份有限公司 | Dust collector |
| CN108053967A (en) * | 2017-12-29 | 2018-05-18 | 成都银河磁体股份有限公司 | A kind of bag magnetic assembly, column bag magnetic assembly and processing method |
| CN108390479A (en) * | 2018-03-09 | 2018-08-10 | 沈阳工业大学 | Using the high-speed motor of layering binding hybrid permanent magnet rotor |
| CN108448852A (en) * | 2018-03-09 | 2018-08-24 | 沈阳工业大学 | A kind of outer rotor high-speed engine using circumferential whole composite permanet magnet structure |
| CN108448855A (en) * | 2018-03-09 | 2018-08-24 | 沈阳工业大学 | A kind of outer rotor high-speed motor of novel whole permanent-magnet structure |
| CN109980889A (en) * | 2019-04-04 | 2019-07-05 | 河北国创石油设备有限公司 | A kind of Structure of mover of oil-submersible linear lifting power device |
| CN110504805A (en) * | 2019-08-28 | 2019-11-26 | 中国北方车辆研究所 | A kind of permanent magnet surface-mount type high speed rotor of motor permanent magnet fixing means |
| CN113098220A (en) * | 2021-03-14 | 2021-07-09 | 重庆恒博机械制造有限公司 | Permanent magnet motor and manufacturing method thereof |
| CN113890215A (en) * | 2021-09-14 | 2022-01-04 | 武汉理工大学 | High-speed amorphous alloy permanent magnet motor |
| CN116154997A (en) * | 2023-03-24 | 2023-05-23 | 浙江极氪智能科技有限公司 | Motor rotor structure, motor and winding method of wire harness net |
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| CN202475068U (en) * | 2012-03-26 | 2012-10-03 | 珠海格力电器股份有限公司 | Motor permanent magnet fixing structure and motor comprising same |
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2012
- 2012-03-26 CN CN2012100837712A patent/CN103368300A/en active Pending
Patent Citations (4)
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| CN101340115A (en) * | 2007-07-06 | 2009-01-07 | 日本电产三协株式会社 | Motor, rotor, manufacturing method of rotor and motor with the rotor |
| CN201994746U (en) * | 2011-04-08 | 2011-09-28 | 珠海格力电器股份有限公司 | Permanent magnet motor and motor rotor thereof |
| CN102361385A (en) * | 2011-10-13 | 2012-02-22 | 中国船舶重工集团公司第七○五研究所 | Brushless direct current motor |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595194A (en) * | 2013-11-19 | 2014-02-19 | 江苏航天动力机电有限公司 | Method for bonding magnetic steel piece to high-speed permanent magnet synchronous motor |
| CN105662268A (en) * | 2014-11-20 | 2016-06-15 | 江苏美的清洁电器股份有限公司 | Dust collector |
| CN108053967A (en) * | 2017-12-29 | 2018-05-18 | 成都银河磁体股份有限公司 | A kind of bag magnetic assembly, column bag magnetic assembly and processing method |
| CN108448852B (en) * | 2018-03-09 | 2023-09-15 | 沈阳工业大学 | External rotor high-speed generator adopting circumferential integral composite permanent magnet structure |
| CN108390479A (en) * | 2018-03-09 | 2018-08-10 | 沈阳工业大学 | Using the high-speed motor of layering binding hybrid permanent magnet rotor |
| CN108448852A (en) * | 2018-03-09 | 2018-08-24 | 沈阳工业大学 | A kind of outer rotor high-speed engine using circumferential whole composite permanet magnet structure |
| CN108448855A (en) * | 2018-03-09 | 2018-08-24 | 沈阳工业大学 | A kind of outer rotor high-speed motor of novel whole permanent-magnet structure |
| CN108390479B (en) * | 2018-03-09 | 2024-02-09 | 沈阳工业大学 | High-speed motor adopting layered binding mixed permanent magnet rotor |
| CN108448855B (en) * | 2018-03-09 | 2023-11-21 | 沈阳工业大学 | Novel outer rotor high-speed motor with integral permanent magnet structure |
| CN109980889A (en) * | 2019-04-04 | 2019-07-05 | 河北国创石油设备有限公司 | A kind of Structure of mover of oil-submersible linear lifting power device |
| CN110504805A (en) * | 2019-08-28 | 2019-11-26 | 中国北方车辆研究所 | A kind of permanent magnet surface-mount type high speed rotor of motor permanent magnet fixing means |
| CN113098220A (en) * | 2021-03-14 | 2021-07-09 | 重庆恒博机械制造有限公司 | Permanent magnet motor and manufacturing method thereof |
| CN113890215A (en) * | 2021-09-14 | 2022-01-04 | 武汉理工大学 | High-speed amorphous alloy permanent magnet motor |
| CN116154997A (en) * | 2023-03-24 | 2023-05-23 | 浙江极氪智能科技有限公司 | Motor rotor structure, motor and winding method of wire harness net |
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Application publication date: 20131023 |