CN203166724U - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN203166724U CN203166724U CN 201320136119 CN201320136119U CN203166724U CN 203166724 U CN203166724 U CN 203166724U CN 201320136119 CN201320136119 CN 201320136119 CN 201320136119 U CN201320136119 U CN 201320136119U CN 203166724 U CN203166724 U CN 203166724U
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- stator
- electric machine
- rotor
- brushless electric
- magnetic pole
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Abstract
The utility model discloses a brushless motor. The brushless motor comprises a motor body formed by a wheel shaft and a wheel hub, a motor rotor embedded at the wheel shaft and a stator arranged outside the motor rotor, wherein an outer ring of the motor rotor is fixedly provided with magnetic poles, the magnetic poles are arranged on the wheel shaft in a ring array mode, the stator comprises stator teeth and tooth slots, the stator teeth are connected in a ring, the stator teeth is consistent with the magnetic poles in number, numbers of the stator teeth and the magnetic poles are respectively an even number, and each stator tooth is wound by a coil winding. Compared with a traditional locomotive motor, by directly mounting the brushless motor in the wheel hub of an automobile, mass is greatly reduced, a structure is simple and compact, operation is convenient. The brushless motor is advantaged in that reduction of torque ripple and reduction of vibration noise are realized.
Description
Technical field
The utility model relates to machine field, is specifically related to a kind of brushless electric machine.
Background technology
Motor is a kind of equipment that electric energy is converted to mechanical energy.Be to utilize hot-wire coil (stator winding just) to produce rotating magnetic field and act on the closed aluminium frame of rotor squirrel-cage formula to form magnetoelectricity power rotation torque.Motor is by using the power supply difference to be divided into DC motor and alternating current motor, and the motor major part in the electric power system is alternating current machine, can be synchronous machine or asynchronous machine (motor stator magnetic field rotating speed and rotor rotation rotating speed do not keep same leg speed).Be used for the permanent magnet direct current motor that is still traditional rotary armature of the permanent magnetic brushless employing of electric automobile at present, it exists increases complicated structure, and transmission is brought instability.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of torque ripple that reduces, and reduces the brushless electric machine of vibrating noise.
The utility model is achieved through the following technical solutions: a kind of brushless electric machine, comprise the motor main body that is constituted by wheel shaft and wheel hub, and be embedded in the rotor at wheel shaft place, and install in the stator of rotor outside, described rotor outer ring sets firmly magnetic pole, the magnetic pole annular array is on wheel shaft, described stator comprises stator tooth and teeth groove, the stator tooth annular is joined, and stator tooth quantity is corresponding with the number of magnetic poles of electronics rotor, the quantity of described stator tooth and magnetic pole is even number, described on each stator tooth the coiling winding.
As optimized technical scheme, a circle rare-earth permanent magnet steel is installed on the internal diameter of described wheel hub.
As optimized technical scheme, described motor main body links to each other with external storage battery.
As optimized technical scheme, on the side of described wheel hub end cap is installed.
As optimized technical scheme, described in each cross section of rotor, the edge circular arc line of each magnetic pole arranges axisymmetricly with respect to field axis.
As optimized technical scheme, described in each cross section of stator, the both sides end points of each stator tooth arranges axisymmetricly with respect to the tooth axis.
As optimized technical scheme, this brushless electric machine also comprises continuous rotor-position sensor and controller.
The beneficial effects of the utility model are: compare with the conventional locomotive motor, owing to directly brushless electric machine is installed in the hub for vehicle wheel of automobile, quality greatly alleviates, and is simple and compact for structure, easy to operate, this motor can reduce torque ripple, reduces advantages such as vibrating noise.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following specific embodiment and accompanying drawing.
Fig. 1 is the structural representation of the utility model brushless electric machine.
Description of reference numerals:
1, wheel shaft, 2, wheel hub, 3, the motor main body, 4, stator, 5, magnetic pole, 6, stator tooth, 7, teeth groove, 8, coil windings, 9, rare-earth permanent magnet steel, 10, end cap.
Embodiment
As shown in Figure 1, a kind of brushless electric machine, comprise the motor main body 3 that is constituted by wheel shaft 1 and wheel hub 2, and be embedded in the rotor at wheel shaft 1 place, and install stator 4 in the rotor outside, described rotor outer ring sets firmly magnetic pole 5, magnetic pole 5 annular arrays are on wheel shaft 1, described stator 4 comprises stator tooth 6 and teeth groove 7, stator tooth 6 annulars are joined, and stator tooth 6 numbers are identical with magnetic pole 5 numbers of electronics rotor, and the quantity of described stator tooth (6) and magnetic pole (5) is even number, described on each stator tooth 6 coiling winding 8.
Wherein, a circle rare-earth permanent magnet steel 9 is installed on the internal diameter of described wheel hub 2.
Described motor main body 3 links to each other with external storage battery.
Described in each cross section of rotor, the edge circular arc line of each magnetic pole 5 arranges axisymmetricly with respect to magnetic pole 5 axis, because of the center of circle edge circular arc line on the rotor pivot not, can make the variation of the air-gap field that rotor and stator 4 form more level and smooth, thereby the fluctuation of more effective minimizing output electromagnetic torque further reduces the vibration in the motor course of work.
Described in each cross section of stator 4, the both sides end points of each stator tooth 6 arranges axisymmetricly with respect to the tooth axis, when rotor rotates, the axial symmetry setting can make the variation of air-gap field more even, thereby the Changing Pattern that makes air-gap field more levels off to sinusoidal waveform, reaches the purpose that further reduces torque ripple and vibrating noise.
This brushless electric machine also comprises continuous rotor-position sensor and controller, rotor-position sensor is for detection of current phase position and the output rotor phase position signal of rotor, and the controller that links to each other with rotor-position sensor is used for giving coil windings 8 to carry out commutation according to the driving current signal that the described phase position signal generation one that receives changes by sinusoidal wave rule.
The beneficial effects of the utility model are: compare with the conventional locomotive motor, owing to directly brushless electric machine is installed in the hub for vehicle wheel of automobile, quality greatly alleviates, and is simple and compact for structure, easy to operate, this motor can reduce torque ripple, reduces advantages such as vibrating noise.
The above only is embodiment of the present utility model, but protection range of the present utility model is not limited thereto, and any variation or replacement of expecting without creative work all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claims were limited.
Claims (7)
1. brushless electric machine, it is characterized in that: comprise the motor main body (3) that is constituted by wheel shaft (1) and wheel hub (2), and be embedded in the rotor that wheel shaft (1) is located, and install stator (4) in the rotor outside, described rotor outer ring sets firmly magnetic pole (5), magnetic pole (5) annular array is on wheel shaft (1), described stator (4) comprises stator tooth (6) and teeth groove (7), stator tooth (6) annular is joined, and stator tooth (6) quantity is corresponding with magnetic pole (5) quantity of electronics rotor, described stator tooth (6) is even number with the quantity of magnetic pole (5), and is described at the last coiling winding (8) of each stator tooth (6).
2. brushless electric machine according to claim 1 is characterized in that: a circle rare-earth permanent magnet steel (9) is installed on the internal diameter of described wheel hub (2).
3. brushless electric machine according to claim 1 is characterized in that: described motor main body (3) links to each other with external storage battery.
4. brushless electric machine according to claim 1 and 2 is characterized in that: end cap (10) is installed on the side of described wheel hub (2).
5. brushless electric machine according to claim 1, it is characterized in that: described in each cross section of rotor, the edge circular arc line of each magnetic pole (5) arranges axisymmetricly with respect to magnetic pole (5) axis.
6. brushless electric machine according to claim 1, it is characterized in that: described in each cross section of stator (4), the both sides end points of each stator tooth (6) arranges axisymmetricly with respect to the tooth axis.
7. according to the arbitrary described brushless electric machine of claim 1-6, it is characterized in that: this brushless electric machine also comprises continuous rotor-position sensor and controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136119 CN203166724U (en) | 2013-03-22 | 2013-03-22 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136119 CN203166724U (en) | 2013-03-22 | 2013-03-22 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166724U true CN203166724U (en) | 2013-08-28 |
Family
ID=49027880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320136119 Expired - Fee Related CN203166724U (en) | 2013-03-22 | 2013-03-22 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752681A (en) * | 2018-12-08 | 2020-02-04 | 韦翔 | U-shaped pole permanent magnet motor |
-
2013
- 2013-03-22 CN CN 201320136119 patent/CN203166724U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752681A (en) * | 2018-12-08 | 2020-02-04 | 韦翔 | U-shaped pole permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140322 |