CN2556843Y - Brushless dc otor for electric motor car - Google Patents
Brushless dc otor for electric motor car Download PDFInfo
- Publication number
- CN2556843Y CN2556843Y CN 02264846 CN02264846U CN2556843Y CN 2556843 Y CN2556843 Y CN 2556843Y CN 02264846 CN02264846 CN 02264846 CN 02264846 U CN02264846 U CN 02264846U CN 2556843 Y CN2556843 Y CN 2556843Y
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- stator
- model
- utility
- motor
- permanent magnet
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Abstract
The utility model relates to a direct current brushless motor used in electric vehicles, and a motor stator used coiled iron core forms a disk type structure which is fixed on a wheel axis, and rotor bodies at the left side and the right side of the stator winding are respectively provided with a group of permanent magnet, and a hall sensor which is used for sensing the position condition is directly and fixedly arranged on a circuit board of the stator. The magnetic field of the utility model is an axial magnetic field and is even in air gap flux density, small in torque ripple and high in efficiency; the whole volume of the utility model is relatively reduced, the magnet body can be used fully and the performance of the motor can be enhanced effectively, and the utility model has the advantages of easy debugging and maintenance, which is convenient for users.
Description
Technical field
The utility model relates to motor, belongs to a kind of motor with electronic commutator, specifically is a kind of dc brushless motor of electric vehicle.
Background technology
Electric bicycle, electric motorcycle are emission-free with it, noiseless, safety, advantage such as light, just are being subjected to users' favor, and as the motor that drives usefulness, just are being again the research and development emphasis of many producers and research institution.The motor that electric bicycle, electric motorcycle are used mainly contains two kinds in the market: a kind of is brush direct current motor, and another kind is a dc brushless motor.Brush direct current motor brings noise, spark, radio interference, deadly defects such as the life-span is short, efficient is low, maintenance difficult thus because of adopting the structure of the mechanical commutation of brush; And brushless electric machine is to adopt the electronics commutation, and therefore AC driving has advantages such as noise is little, high-energy-density, high reliability, high efficiency.So motor of electric motor car is gradually by brushless replacement brush motor.But, because of all adopting the teeth groove structure, existing electric vehicle brushless motor reaches radially magnetic circuit, and exist the torque fluctuations that causes by slot effect bigger, winding utilization is lower, volume is bigger, goes back position sensor with special-purpose supporting structure, has increased whole volume.
Summary of the invention
The purpose of this utility model provides a kind of dc brushless motor of electric vehicle, achieves simplified structure, reduces volume, makes full use of permanent magnet, improves air gap flux density, and then improves motor properties.
Realize the utility model of above-mentioned purpose, the same with existing dc brushless motor of electric vehicle, also has device at the stator on the axletree, the rotor of device on housing (wheel rim), and in order to the Hall element of sense position state, characteristics of the present utility model are, stator does not adopt traditional Alveolus type structure, is disk structure and adopt the takeup type iron core to constitute one; Simultaneously, changing radial magnetic field is axial magnetic field, promptly is installed with permanent magnet on the rotor block relative with disc type stator both sides either side; For the sensing precision that improves the turned position and make things convenient for Installation and Debugging, the utility model is directly arranged in Hall element and is installed with on the circuit board on the stator.
The utility model can be installed with permanent magnet on the rotor block relative with disc type stator both sides either side, also can on the rotor block relative, be equipped with permanent magnet with disc type stator both sides, and with the latter for better, can make full use of the energy of winding, and make stressed even, further reduce air gap, carry high-magnetodensity.
The utlity model has plurality of advantages: because stator of the present utility model has adopted tray type structure, air-gap field is an axial magnetic field, then the torque fluctuations that does not exist slot effect to cause; Because the stator shaft orientation size is little, winding overhang is then little, and copper consumption reduces, and copper loss is then little, and efficient rises; As after adopting the two-sided permanent magnet body structure, air gap flux density can improve about 10% again, and then has improved the uniformity of air gap flux density well, has further reduced the overall volume of motor, makes full use of permanent magnet, and then improves motor properties; Hall element is fixed on the stator, and is simple in structure, and debugging is easy, favourable further realization electromechanical integrated structure.
Description of drawings
Fig. 1 is a structure cutaway view of the present utility model
Embodiment
A preferred embodiment of the present utility model as shown in drawings.Below in conjunction with the utility model is specified.
See by Fig. 1, this dc brushless motor of electric vehicle, its stator 5 is packed on the axletree 1, and this stator 5 adopts takeup type iron core formation to be disk structure, is wound with winding coil 6 on it.Left and right end cap 2,7 is fixed in electric machine casing 4 both sides, and is connected on the axletree 1 by bearing, respectively is equipped with one group of permanent magnet 3 on the left and right end cap 2,7 of 6 liang of side positions of stator winding.
See by Fig. 1 that again present embodiment is installed with a circuit board 8 in a side of disc type stator 5, the Hall element that three its central angles are 120 degree is housed on this circuit board 8.
Claims (2)
1, a kind of dc brushless motor of electric vehicle has device at the stator on the axletree, the rotor of device on housing, and in order to the Hall element of sense position state, it is characterized in that: stator is disk structure with takeup type iron core formation; On the rotor block relative, be installed with permanent magnet with this disc type stator both sides either side; Hall element is directly arranged in and is installed with on the circuit board on the stator.
2, according to the described dc brushless motor of electric vehicle of claim 1, it is characterized in that: on the rotor block relative, be equipped with permanent magnet with disc type stator both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02264846 CN2556843Y (en) | 2002-06-18 | 2002-06-18 | Brushless dc otor for electric motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02264846 CN2556843Y (en) | 2002-06-18 | 2002-06-18 | Brushless dc otor for electric motor car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2556843Y true CN2556843Y (en) | 2003-06-18 |
Family
ID=33730979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02264846 Expired - Lifetime CN2556843Y (en) | 2002-06-18 | 2002-06-18 | Brushless dc otor for electric motor car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2556843Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8338999B2 (en) | 2007-07-31 | 2012-12-25 | Seiko Epson Corporation | Brushless motor |
| CN101359864B (en) * | 2007-07-31 | 2013-08-28 | 精工爱普生株式会社 | Brushless motor |
| CN103595215A (en) * | 2013-11-20 | 2014-02-19 | 华中科技大学 | Axial magnetic field permanent magnet brushless direct current motor |
| CN105186779A (en) * | 2015-09-25 | 2015-12-23 | 重庆博荣拓尔科技有限公司 | Generator used for wheel hub |
| CN105186780A (en) * | 2015-09-25 | 2015-12-23 | 重庆博荣拓尔科技有限公司 | Wheel hub generator |
| CN105545138A (en) * | 2007-02-28 | 2016-05-04 | 马格纳·克劳祖雷斯有限公司 | Compact cable drive power sliding door mechanism |
-
2002
- 2002-06-18 CN CN 02264846 patent/CN2556843Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545138A (en) * | 2007-02-28 | 2016-05-04 | 马格纳·克劳祖雷斯有限公司 | Compact cable drive power sliding door mechanism |
| US8338999B2 (en) | 2007-07-31 | 2012-12-25 | Seiko Epson Corporation | Brushless motor |
| CN101359864B (en) * | 2007-07-31 | 2013-08-28 | 精工爱普生株式会社 | Brushless motor |
| CN103595215A (en) * | 2013-11-20 | 2014-02-19 | 华中科技大学 | Axial magnetic field permanent magnet brushless direct current motor |
| CN105186779A (en) * | 2015-09-25 | 2015-12-23 | 重庆博荣拓尔科技有限公司 | Generator used for wheel hub |
| CN105186780A (en) * | 2015-09-25 | 2015-12-23 | 重庆博荣拓尔科技有限公司 | Wheel hub generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NEW ANANDA DRIVE TECHNIQUES (SHANGHAI) CO., LTD. Free format text: FORMER OWNER: SHANGHAI ANNAIDA DRIVE TECHN CO., LTD. Effective date: 20111114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200233 XUHUI, SHANGHAI TO: 201108 MINHANG, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111114 Address after: 201108 Minhang District City, Shanghai Road, No. 2060, 1-3 floor, 5 Patentee after: Xinan Naida Drive Technology (Shanghai) Co.,Ltd. Address before: 200233, 30 Rainbow Road, Shanghai Patentee before: Shanghai Ananda Drive Techniques Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120618 Granted publication date: 20030618 |