CN201450431U - Lamination of stator of hub motor for electric bicycle - Google Patents
Lamination of stator of hub motor for electric bicycle Download PDFInfo
- Publication number
- CN201450431U CN201450431U CN2009200466190U CN200920046619U CN201450431U CN 201450431 U CN201450431 U CN 201450431U CN 2009200466190 U CN2009200466190 U CN 2009200466190U CN 200920046619 U CN200920046619 U CN 200920046619U CN 201450431 U CN201450431 U CN 201450431U
- Authority
- CN
- China
- Prior art keywords
- lamination
- crown
- electric bicycle
- lateral surface
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000003475 lamination Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 201000011180 Dental Pulp Calcification Diseases 0.000 claims description 6
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 210000000332 tooth crown Anatomy 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 241000446313 Lamella Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a lamination of a stator of a hub motor for an electric bicycle, which comprises a plurality of tooth bodies (1) evenly distributed along the circumferential direction and tooth crown (2) integrated with the tooth body (1). The lamination is mainly characterized in that the outer side surface (2-1) of the tooth crown (2) facing to the magnetic steel (3) of the rotor takes the shape of a concentric circular arc with a raised center and symmetrical drooping both sides; the outer side surface (2-1) taking the shape of the concentric circular arc is arranged along the axial direction; and the operating air gap structure with unequal distances is formed by the outer side surface (2-1) of the tooth crown (2) and the inner circle of the magnetic steel (3). The utility model has the advantages that the structure is reasonable, the cogging torque of the motor made of the lamination is small, the efficiency of the motor is small, and the driving distance of the electric bicycle is relatively long.
Description
Technical field
The utility model relates to a kind of lamination of electric bicycle hub motor stator, is specifically related to the lamination of permanent-magnet three-phase brushless direct current drive bicycle hub motor stator.Belong to the electric bicycle motor technology.
Background technology
The stator of described electric bicycle hub motor is superimposed and be connected with motor shaft and constitute by the lamination (punching) of some lamellas.
The stator lasmination of existing described motor, in the face of the lateral surface of circle in the magnet steel, and the working gas gap between the circle is equidistant (as shown in Figure 1) in the magnet steel.That is to say, the stator lasmination cylindrical, be with rotor magnetic steel in the circle, both are concentric.
Because the magnet steel of described motor adopts rare earth magnetic steel (for example Nd-Fe-B magnet steel), therefore the remanent magnetism B and the coercivity H of described magnet steel all are bigger.And for simple production process, motor stator adopts straight trough (line embedding groove), and magnet steel then adopts the rectangle magnet steel, also because the power work waveform of described motor is similar to square wave, thereby the slot effect of motor and location torque, also all bigger.Will cause the corresponding increase with operating current of no-load current of described motor like this, consequently described electric efficiency and electric bicycle continue apart from descending; And because location torque is bigger, and it is very not light to make manpower carry out electric bicycle, spend very big strength.
Summary of the invention
The utility model aims to provide a kind of rational in infrastructure, and is little with the motor location torque of its preparation, and electric efficiency is high to continue apart from the relative lamination of long a kind of electric bicycle hub motor stator, to overcome the deficiency of prior art with electric bicycle.
The utility model realizes that the technical scheme of its purpose is:
A kind of lamination of electric bicycle hub motor stator, comprise several along the circumferential direction equally distributed denticles, with with the denticle crown of one each other, its innovative point is: described crown is in the face of the lateral surface of rotor magnetic steel, is concentricity circular-arc that the center projections bilateral symmetry hangs low; It is axial arranged along it to be described circular-arc lateral surface; By the described lateral surface of crown, and constitute not equidistant working gas gap structure in the magnet steel between circle.
Can understand by above given technical scheme, the utility model is because its described working gas gap is not equidistant, thereby the close shape of the magnetic of its motor gas-gap is not square, but sinusoidal wave shape, thereby reduced the slot effect of motor significantly, effectively cut down the motor location torque, thereby realized the purpose of this utility model.
The utility model is also advocated, the lateral surface both sides of described crown, and the working gas gap δ between circle in the magnet steel
2, with the lateral surface central authorities of crown, and the working gas gap δ between circle in the magnet steel
1Ratio, be controlled at δ
2/ δ
1In=1.5～2.0 scopes.
The experiment prompting, within the specific limits, working gas gap ratio is big more, and location torque is more little, but because the change of the crown shape of described lamination teeth, the magnetic flux density that is caused reduces, and can directly influence the energy index of motor.In order to reach the energy index identical, must suitably increase the sheet number of plies of motor stator lamination (dashing long) with the prior art motor.
After technique scheme was implemented, what the utility model had was rational in infrastructure, little with the motor location torque of its preparation, and characteristics such as the high relative length of distance that continues with electric bicycle of electric efficiency are conspicuous.
Description of drawings
Fig. 1 is the described motor stator lamination of prior art, with the equipped view of circle in the magnet steel 3; By this figure as seen, the working gas gap between the circle is equidistant in stator lasmination cylindrical and the rotor magnetic steel 3;
Fig. 2 is the stator lasmination and the equipped view of rotor magnetic steel 3 interior circles of a kind of embodiment of the utility model;
Fig. 3 is the monodentate part and rotor magnetic steel 3 equipped state enlarged diagrams of stator lasmination as shown in Figure 2.
Embodiment
Below contrast accompanying drawing, by the description of embodiment, the utility model is described in further detail.
Typical embodiment is shown in accompanying drawing 2,3.
A kind of lamination of electric bicycle hub motor stator, comprise several along the circumferential direction equally distributed denticles 1, with with denticle 1 crown 2 of one each other, described crown 2 is in the face of the lateral surface 2-1 of rotor magnetic steel 3, is concentricity circular-arc that the center projections bilateral symmetry hangs low; It is axial arranged along it to be described circular-arc lateral surface 2-1; By the lateral surface 2-1 of crown 2, and constitute not equidistant working gas gap structure in the magnet steel 3 between circle.And the lateral surface 2-1 both sides of described crown 2, and the working gas gap δ between circle in the magnet steel 3
2, with the lateral surface 2-1 central authorities of crown 2, and the working gas gap δ between circle in the magnet steel 3
1Ratio, be δ
2/ δ
1=1.5.
It is good adopting the described motor trial effect of the utility model first sample preparation.Realized original intention of the present utility model.
Claims (2)
1. the lamination of an electric bicycle hub motor stator, comprise several along the circumferential direction equally distributed denticles (1), with with denticle (1) crown of one (2) each other, it is characterized in that: described crown (2) is in the face of the lateral surface (2-1) of rotor magnetic steel (3), is concentricity circular-arc that the center projections bilateral symmetry hangs low; It is axial arranged along it to be described circular-arc lateral surface (2-1); By the described lateral surface (2-1) of crown (2), and constitute not equidistant working gas gap structure in the magnet steel (3) between circle.
2. the lamination of electric bicycle hub motor stator according to claim 1 is characterized in that, lateral surface (2-1) both sides of described crown (2), and the working gas gap δ between circle in the magnet steel (3)
2, with lateral surface (2-1) central authorities of crown (2), and the working gas gap δ between circle in the magnet steel (3)
1Ratio, be controlled at δ
2/ δ
1In=1.5～2.0 scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200466190U CN201450431U (en) | 2009-06-18 | 2009-06-18 | Lamination of stator of hub motor for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200466190U CN201450431U (en) | 2009-06-18 | 2009-06-18 | Lamination of stator of hub motor for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450431U true CN201450431U (en) | 2010-05-05 |
Family
ID=42555154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200466190U Expired - Fee Related CN201450431U (en) | 2009-06-18 | 2009-06-18 | Lamination of stator of hub motor for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244446A (en) * | 2010-05-11 | 2011-11-16 | 天津市松正电动科技有限公司 | Permanent magnet synchronism motor (PMSM) |
| CN103401331A (en) * | 2013-07-23 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Disc type multi-magnetic pole permanent magnet motor for multi-rotor unmanned aerial vehicle |
| CN114123571A (en) * | 2020-08-28 | 2022-03-01 | 鸣志电器(太仓)有限公司 | Rotor of stepping motor and stepping motor with rotor |
-
2009
- 2009-06-18 CN CN2009200466190U patent/CN201450431U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102244446A (en) * | 2010-05-11 | 2011-11-16 | 天津市松正电动科技有限公司 | Permanent magnet synchronism motor (PMSM) |
| CN103401331A (en) * | 2013-07-23 | 2013-11-20 | 中国科学院长春光学精密机械与物理研究所 | Disc type multi-magnetic pole permanent magnet motor for multi-rotor unmanned aerial vehicle |
| CN103401331B (en) * | 2013-07-23 | 2015-06-10 | 中国科学院长春光学精密机械与物理研究所 | Disc type multi-magnetic pole permanent magnet motor for multi-rotor unmanned aerial vehicle |
| CN114123571A (en) * | 2020-08-28 | 2022-03-01 | 鸣志电器(太仓)有限公司 | Rotor of stepping motor and stepping motor with rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20140618 |
|
| EXPY | Termination of patent right or utility model |