CN2415532Y - Permanent-magnet brushless motor unit - Google Patents
Permanent-magnet brushless motor unit Download PDFInfo
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- CN2415532Y CN2415532Y CN 00229528 CN00229528U CN2415532Y CN 2415532 Y CN2415532 Y CN 2415532Y CN 00229528 CN00229528 CN 00229528 CN 00229528 U CN00229528 U CN 00229528U CN 2415532 Y CN2415532 Y CN 2415532Y
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Abstract
The utility model relates to a permanent-magnet brushless motor device, which is composed of an outer rotor structure or an inner rotor structure. Six or thirty-six pairs of permanent magnets are arranged on a rotor of the outer rotor structure or the inner rotor structure. The ratio of the width of an armature slot and an armature tooth is 1: 1-0.8, and the number of the armature slot can be selected within the range of 1: 1-0.8. The number of the armature slot of per pole and per phase is q (the value of the q is one or two). The gas length of the motor device is checked by that the value of g is (0.005-0.010) * D meter. The permanent magnet is formed into a rectangle or a trapezoid. The utility model has the advantages of high efficiency, large starting torque, small size, light weight, and stable operation. The utility model can be arranged in a wheel hub to drive a tyre. The utility model is especially suitable for an electric bicycle and an electric motor car.
Description
The utility model relates to electric device, and more specifically relate to a kind of driving that is used for motor vehicle and noise and vibration are had strict restriction, and the brushless, permanently electric device that has special selection occasion to use to torque factor.
Substitute existingly with low noise, free of contamination electric device, become the development trend of modern society by gasoline, Diesel engine driving power as vehicular traffic.The drive unit of motor vehicle once adopted direct current series motor, direct current motor with separate excitation, AC asynchronous motor and permanent-magnetic brush-less DC motor.Direct current series motor has the use occasion of broad, but needs commutator and brush, so volume is big, cost is high, poor reliability, difficult in maintenance; The control of direct current motor with separate excitation is convenient, but fragile structure, and cost is higher; AC asynchronous motor is passed through vector control, power is big, maintenance is simple, but complicated electronic-controlled installation is arranged, and its constructional device need be further perfect; Permanent-magnetic brush-less DC motor is a kind of faster electric devices of latest developments, and as " permanent magnet direct current motor outer-rotor structure " " 21 " ZL patent No. 95200391.0, this technical scheme also exists certain defective: its structure has only the external rotor form; Its efficient should further improve, and motor torque needs further to increase, and when its driving power as motorcycle, during in particular for bicycle driving power, its diameter and thickness still need further reduce etc., so the further developmental research of need.
The purpose of this utility model is, a kind of brushless, permanently electric device is provided, on the rotor of outer-rotor structure or inner rotor core, be mounted with permanent magnet, especially be fit to battery-operated motor cycle and electric bicycle and use, have efficient height, noise is low, volume is little, starting torque is big, overload capacity is strong, speed governing is convenient and stable characteristics.
The said brushless, permanently electric device of the utility model is made up of stator and rotor, and this electric device can adopt outer-rotor structure or inner rotor core.The condition that this electric device is moved should be requirement and is made up of jointly electric device and control section.
The said brushless, permanently electric device of the utility model, when it is the outer-rotor structure form, stator is a cylindrical structural, adopt n phase (n 〉=3) holohedral symmetry star connection, Y connection winding, stator core and support are integrated press-mounting and link together with axle, position probing original paper on the stator is contained on the armature tooth of end and passes the winding overhang slit and draw control line with the axle core, stator winding is powered by the inversion speed-governing device by DC power supply.Rotor is made up of permanent magnet and the iron core with pole shoe, by m (6≤m≤36) the alternate layout tandem compound with the pole shoe iron core of permanent magnet is become closed circular external rotor, on the rotor of outer-rotor structure or inner rotor core, be mounted with m (6≤m≤36) to permanent magnet, permanent magnet is along circumferentially pressing N, S, S, N, N, S ... the multipole layout of form, to be the magnetic conduction direction circumferentially, permanent magnet, pole shoe iron core, motor gas-gap and stator core are formed flux path jointly; Rectangular or the trapezium structure of said permanent magnet, the both sides of permanent magnet closely are connected with the pole shoe iron core.The magnetic loop that this magnetic structure and stator current are formed is vertical mutually, thus loss of excitation when having avoided the electric device overload.
The said brushless, permanently electric device of the utility model is to calculate principle according to magneto magnetic field calculation and magnetic circuit, in conjunction with the requirement that reduces brushless, permanently electric device armature reaction, adopt the armature groove width to be: to choose suitable armature slot number in 1 to 1～0.8 scope with armature facewidth ratio.Every extremely every phase groove number is q (q=1 or 2), when electric device power≤500W, desirable q=1, when electric device power＞500W, desirable P=2 determines number of poles, calculates and the definite magnet size of magnetic loop calculating with the main field stray field, motor pole number of choosing with the method and overall dimension can reach and dwindle motor volume, alleviate motor weight, can realize the purpose of high torque performance again.
When the said brushless, permanently electric device of the utility model was outer-rotor structure, its permanent magnet was placed in the external rotor.Because motor vehicle starting torque big (can reach specified square 2.5～3.5 times), permanent power bracket is wide, so armature supply big (because permanent magnetic field is constant) when starting or low cruise, the armature reaction of electric device is also bigger in this case, if with its drive unit, will cause electric device normally to move for above-mentioned reasons as motor vehicle.In order to reduce armature reaction effectively, electric device of the present utility model is offered groove and is suppressed armature reaction on the pole shoe iron core.The setting of said permanent magnet of the utility model and pole shoe iron core makes electric device armature field axis and magnetic field of permanent magnet intersect, and the armature field main flow is not by permanent magnet, so the degaussing phenomenon can not take place.Do not swing in order to guarantee that armature magnetic is cut, electric device gas length g adopts g=(0.005～0.010) * D to check, and wherein D is the electric device diameter.
The said brushless, permanently electric device of the utility model, when it was the inner rotor core form, stator structure was identical with the stator mirror image of outer-rotor structure, and places among the non-magnetic shell.It is identical that the rotor of inner rotor core and the rotor of outer-rotor structure are mirror image.
The utility model compared with prior art has the following advantages:
1, the utility model proposes the only number of pole-pairs of electric device.
2, electric bicycle use at present has brush electric motor system efficient below 75%, and adopts electric machine system efficient of the present utility model more than 90%, and efficient improves more than 10%.
3, this device be used for the electric bicycle starting torque can be greater than 2.5～3.5 times of rated moment.
4, this device is used for electric bicycle, when power is 150W, can accomplish 180 millimeters of diameters, 50 millimeters of length, and its cumulative volume is below 85% of " permanent magnet direct current motor outer-rotor structure " patented technology power same electrical motivation.
5, this device is compared with similar other structure, has more rational magnetic structure and measure and guarantees that electric device moves not loss of excitation under overload or impact load, keep operation stability.
6, the permanent magnet of this device adopts rectangle or trapezoidal, makes that processing is more convenient, and cost is lower.
Fig. 1: brushless, permanently electric device outer-rotor structure schematic diagram;
Fig. 2: brushless, permanently electric device inner rotor core schematic diagram.
Below in conjunction with accompanying drawing the utility model said brushless, permanently electric device outer-rotor structure and inner rotor core are further described.
According to Fig. 1 as can be known, permanent magnet 1 is along circumferentially pressing N, S, S, N, N, S ... multipole layout replaces tandem compound with pole shoe iron core 2 and becomes closed circle, adds fixing non-magnetic shell 3 outside it, has groove 4 in pole shoe iron core 2.Be stator in rotor, leave air gap 5 between rotor and stator, do not swing in order to guarantee armature field, air gap 5 length are checked with (0.005～0.010) * D rice, and wherein D is the electric device diameter.Be provided with armature slot 6 and armature tooth 7 at the stator periphery, armature slot 6 wide with armature tooth 7 wide ratios be in 1: 1～0.8 scope.
According to Fig. 2 as can be known, the permanent magnet 1 of its rotor, pole shoe iron core 2, groove 4 are formed rotor, and its setting is identical with the rotor setting mirror image of outer-rotor structure, settles non magnetic support 8 in the rotor, and air gap 5 length are checked identical with external rotor.
Claims (2)
1, a kind of brushless, permanently electric device, it can be made of outer-rotor structure or inner rotor core, it is characterized in that outer-rotor structure or on the inner rotor core rotor, be mounted with 6≤m≤36 pair permanent magnet, armature slot (6) is wide to be to choose armature slot (6) number in 1: 1～0.8 scope with the wide ratio of armature tooth (7), every extremely every phase armature slot (6) number is q (q=1 or 2), determine number of pole-pairs, electric device air gap (5) length is checked with g=(0.005～0.010) * D rice, permanent magnet (1) is rectangular or trapezoidal, during outer-rotor structure, stator core and support are integrated press-mounting and are connected with axle that the position probing part on the stator is contained on the armature tooth of end and passes the winding overhang slit and draw control line with an axle core.
According to the said a kind of brushless, permanently electric device of claim 1, it is characterized in that 2, during said inner rotor core, stator structure is identical with the stator mirror image of outer-rotor structure, and places among the non-magnetic shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229528 CN2415532Y (en) | 2000-03-28 | 2000-03-28 | Permanent-magnet brushless motor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00229528 CN2415532Y (en) | 2000-03-28 | 2000-03-28 | Permanent-magnet brushless motor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2415532Y true CN2415532Y (en) | 2001-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00229528 Expired - Lifetime CN2415532Y (en) | 2000-03-28 | 2000-03-28 | Permanent-magnet brushless motor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2415532Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610020B (en) * | 2008-06-20 | 2012-03-21 | 株式会社日立制作所 | Permanent magnet type synchronous motor |
| CN102751837A (en) * | 2012-07-10 | 2012-10-24 | 张正泉 | Brushless direct current motor |
| CN104953738A (en) * | 2014-03-28 | 2015-09-30 | 博世（宁波）轻型电动车电机有限公司 | Permanent-magnet synchronous motor and vehicle |
| CN108683321A (en) * | 2018-05-03 | 2018-10-19 | 华中科技大学 | A kind of magnetic geared system of iron yoke fluting |
-
2000
- 2000-03-28 CN CN 00229528 patent/CN2415532Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610020B (en) * | 2008-06-20 | 2012-03-21 | 株式会社日立制作所 | Permanent magnet type synchronous motor |
| CN102751837A (en) * | 2012-07-10 | 2012-10-24 | 张正泉 | Brushless direct current motor |
| CN104953738A (en) * | 2014-03-28 | 2015-09-30 | 博世（宁波）轻型电动车电机有限公司 | Permanent-magnet synchronous motor and vehicle |
| CN108683321A (en) * | 2018-05-03 | 2018-10-19 | 华中科技大学 | A kind of magnetic geared system of iron yoke fluting |
| CN108683321B (en) * | 2018-05-03 | 2020-10-30 | 华中科技大学 | Magnetic gear device with iron yoke grooved |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN AIKET ELECTRIC VEHICLE CO., LTD. Free format text: FORMER NAME OR ADDRESS: CHEN XIANZHEN |
|
| CP03 | Change of name, title or address |
Address after: 518057 South tech Zone, Nanshan District hi tech Industrial Park, Shenzhen, R2A-513 Patentee after: Keaite Electric Vehicle Co., Ltd., Shenzhen Address before: 62-63 central China University of science and Technology West 430074 101 rooms Patentee before: Chen Xianzhen |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010117 |