CN2842850Y - Brushless double-speed motor - Google Patents
Brushless double-speed motor Download PDFInfo
- Publication number
- CN2842850Y CN2842850Y CN 200520107080 CN200520107080U CN2842850Y CN 2842850 Y CN2842850 Y CN 2842850Y CN 200520107080 CN200520107080 CN 200520107080 CN 200520107080 U CN200520107080 U CN 200520107080U CN 2842850 Y CN2842850 Y CN 2842850Y
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- CN
- China
- Prior art keywords
- winding
- stator
- motor
- speed motor
- brushless double
- 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
Links
- 238000004804 winding Methods 0.000 claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012797 qualification 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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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model relates to a brushless double-speed motor, which is particularly suitable for being used on an electric bicycle and comprises a stator consisting of a stator core, a winding, a bracket and a shaft, and a rotor consisting of a shell, an end cover and magnetic steel; the stator winding is formed by connecting two windings with unequal winding cross sections in series, the winding cross section ratio of the two windings is 1.40-1.60: 0.90-1.10, the height of the magnetic steel is 38-45 mm, and the height of the stator iron core is 38-45 mm. The utility model discloses a brushless double speed motor can reduce the energy consumption in order to raise the efficiency when the high-speed operation of motor.
Description
Technical field
The utility model relates to a kind of brushless double-speed motor, is specially adapted to use on the electric bicycle.
Background technology
Electric bicycle enters in the daily life as a kind of walking-replacing tool.At present, the motor that the electric bicycle on the market is used is generally brushless motor, and Chinese patent 89201082.7 discloses a kind of " electric bicycle neodymium iron boron brushless motor ", and this motor directly drives the electric bicycle trailing wheel.It is the external rotor type permanent magnetism brushless DC motor that a kind of rare earth permanent-magnetic material neodymium iron boron is made, form external rotor by magnetic pole, casing, end cap etc., form internal stator by stator core, winding, support, axle, bearing etc., winding is formed by uiform section coiling coiling.Above-mentioned motor can not satisfy the needs of electric bicycle variable block when starting and cruising.Because the motor overwhelming majority's time all is in the high speed rotating state, if can fall the efficient that the loss of end motor when running up then can improve motor.
The utility model content
The utility model provides a kind of to have two variable blocks and can cut down the consumption of energy when high speed with the brushless two-speed motor of raising the efficiency.
The utlity model has the stator of forming by stator core, winding, support and axle, the rotor of forming by housing, end cap and magnet steel; For achieving the above object, the utility model adopts following technical scheme: stator winding is to be formed by unequal two windings in series of coiling sectional area, and the coiling sectional area ratio of two windings is 1.40～1.60: 0.90～1.10.
Further, the coiling sectional area ratio of two windings is 1.45～1.50: 0.95～1.05.
Described magnet steel height is 38～45 millimeters.
The height of described stator core is 38～45 millimeters.
The beneficial effects of the utility model are: (1) winding of the present utility model is made up of unequal two windings in series of coiling sectional area, under the big or small constant situation of the jet-bedding of stator core, make the coiling of a winding wherein into thinner winding, saved certain space thus, make another stator winding can adopt thicker coiling relatively, formed large and small cross section winding like this; Under the constant situation of winding length, thicker wire resistor is less, the utility model is the state of running up when only connecting the heavy in section winding, thereby the loss of motor when high-speed cruising reduced, because the motor overwhelming majority's time all is in the high speed rotating state, so can obviously improve motor efficiency.(2) stator core of the motor that uses in the electric motor car at present and the height of magnet steel are generally 48 millimeters, and the height of stator core of the present utility model and magnet steel has only the 38-45 millimeter, thus less relatively, thus reduced the volume of motor, saved material.
Description of drawings
Fig. 1 is a structure chart of the present utility model.
Fig. 2 is a winding schematic diagram of the present utility model.
Embodiment
See Fig. 1, the utlity model has by support 4, be in support 4 outsides stator core 2, be wound on winding 3 on unshakable in one's determination 2, be in axle 6 stators of forming in support 4 centre bores, by housing 7, be connected to the two end cap 8 at housing 7 two ends and be attached to the rotor that the magnet steel 9 on housing 7 inwalls is formed by polylith.Between end cap 8 and axle 6, be provided with bearing 5 and sleeve 10.Stator winding 3 is to be in series by coiling sectional area two winding A, B inequality.The coiling sectional area ratio of two windings is 1.40～1.60: 0.90～1.10.Magnet steel 9 height e are 38～45 millimeters.The height h of stator core 2 is 38～45 millimeters.
Should use-case be example with 16 cun electric bicycle, be 450 rev/mins during its motor high-speed cruising, be 325 rev/mins during low cruise.The magnet steel 9 of motor rotor adopts 40, and every thick is 3mm, and wide is 11.67mm, and height is 42 millimeters.Stator core 2 is to be built up by silicon steel sheet, and its high h is 42 millimeters, and there are 36 grooves on the surface, puts stator winding 3 in the groove, and what stator winding 3 generally adopted is star connection,
The coiling of the heavy in section winding of stator winding 3 is to be twisted into by the lead that 3 diameters lead that is 0.53mm and 3 diameters are 0.59mm, and being equivalent to sectional area is 1.481mm
2Lead.The heavy in section winding is 7.6 circles.
The coiling of the small bore winding of stator winding 3 is that the sectional area that is equivalent to that is twisted into by the lead that 2 diameters lead that is 0.53mm and 2 diameters are 0.59mm is 0.987mm
2Lead.The small bore winding partly is 3 circles.The heavy in section winding 3-1 of stator winding and the section ratio of small bore winding 3-2 are about 1.48: 0.99.
As can be known from Fig. 2, the utility model is when using, and the motor stator winding is connected with relay.The utility model is connected as the winding of whole stator with small bore winding B with heavy in section winding A when requiring rotating speed slow, to produce bigger torque.After speeding up, can control automatically by relay, be transformed into the winding as stator with heavy in section winding A.
The foregoing description of the present utility model only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make the change of the section ratio of two winding different cross-sectional on the basis of the above description.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (4)
1, a kind of brushless double-speed motor has the stator of being made up of stator core (2), winding (3), support (4) and axle (6), the rotor of being made up of housing (7), end cap (8) and magnet steel (9); It is characterized in that: stator winding (3) is to be in series by coiling unequal two windings of sectional area (A, B), and the coiling sectional area ratio of two windings is 1.40～1.60: 0.90～1.10.
2, brushless double-speed motor according to claim 1 is characterized in that: the coiling sectional area ratio of two windings of stator winding (3) (A, B) is 1.45～1.50: 0.95～1.05.
3, brushless double-speed motor according to claim 1 is characterized in that: magnet steel (9) highly (e) is 38～45 millimeters.
4, brushless double-speed motor according to claim 1 is characterized in that: the height (h) of stator core (2) is 38～45 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520107080 CN2842850Y (en) | 2005-09-02 | 2005-09-02 | Brushless double-speed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520107080 CN2842850Y (en) | 2005-09-02 | 2005-09-02 | Brushless double-speed motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2842850Y true CN2842850Y (en) | 2006-11-29 |
Family
ID=37446721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520107080 Expired - Fee Related CN2842850Y (en) | 2005-09-02 | 2005-09-02 | Brushless double-speed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2842850Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777806A (en) * | 2010-03-05 | 2010-07-14 | 黄山市继林机械制造有限公司 | Motor stator assembly for electromobile |
-
2005
- 2005-09-02 CN CN 200520107080 patent/CN2842850Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777806A (en) * | 2010-03-05 | 2010-07-14 | 黄山市继林机械制造有限公司 | Motor stator assembly for electromobile |
| CN101777806B (en) * | 2010-03-05 | 2011-10-05 | 黄山市继林机械制造有限公司 | Motor stator assembly for electromobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |