CN203747532U

CN203747532U - 12-phase brushless DC motor

Info

Publication number: CN203747532U
Application number: CN201420120311.7U
Authority: CN
Inventors: 姜美茂
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-18
Filing date: 2014-03-18
Publication date: 2014-07-30
Anticipated expiration: 2024-03-18

Abstract

The utility model discloses a motor, and especially relates to a 12-phase brushless DC motor applied for driving electric vehicles or ships. The 12-phase brushless DC motor comprises a rotor and a stator, which are disposed in a casing (5). The center of the stator is provided with a shaft core (4), and the rotor is formed in a manner that 22-26 rare earth permanent magnet magnetic steel (6) is evenly distributed at the inner wall of the casing (5). The rotor is composed of an iron core (1) made by overlaying silicon steel plates and punching sheets, and a winding (3). The iron core (1) is evenly provided with 24 groove teeth (2), and the winding (3) evenly winds around the 24 groove teeth (2), forming four sets of 3-phase windings. The included angle between each two 3-phase windings is 15 DEG. The 12-phase brushless DC motor is advantageous in that with the increasing of the rare earth permanent magnet magnetic steel, the positioning points are increased, the corresponding positioning moment is small, and the output moment is stable, the noise of phase-changing impact is little, and efficiency is high; the 12-phase brushless DC motor is especially suitable for electric car and boat systems requiring power of over 5kW and high reliability.

Description

A kind of 12 phase brushless DC motors

Technical field

The utility model relates to a kind of motor, relates in particular to one 12 phase brushless DC motors that are applied to motor vehicle or boats and ships driving.

Background technology

Along with the development of vehicle technology, 3 phase brushless DC motors have replaced brush motor to obtain the most widely using, and within nearly 2 years, on market, have also gone out 6 phase brushless DC motors, the favourable development that promotes electric motor car.Meanwhile, the development of electric vehicle engineering, has higher requirement to the performance of drive motors.Mainly comprise: there is more high-power grade; Drive steadily, noise is little; Have high conversion efficiency, utilization rate of electrical is high; Location torque is little, and while sliding, resistance is little; Reduce the requirement to controller; Require motor and controller to there is higher reliability.

Although it is ripe that 3 phase brushless electric machine technology have been tending towards, but because heavy-duty motor is had relatively high expectations to controller, and commutation noise is large, location torque is large, the restriction of controlled device technology, real electrical machinery power is less, mainly on the low power equipment such as electric bicycle and part battery-operated motor cycle, uses, and seldom uses as the drive motors of electric automobile.

Existing 6 phase brushless DC motors, compared with 3 phase brushless DC motors, make moderate progress on above properties, but its location torque is large, and sliding performance is poor, the practical requirement of being still not difficult.。

Utility model content

The purpose of this utility model is to provide a kind of 12 phase brushless DC motors, solves the low and excessive problem of location torque of the current large efficiency of direct current commutation noise.

For addressing the above problem, technical solution adopted in the utility model is:

A kind of 12 phase brushless DC motors, comprise the rotor and the stator that are arranged in casing, described stator center is provided with axle core, described rotor is to be evenly distributed on casing inner wall by 22 or 26 thulium permanent magnets to form, described rotor is that the iron core and the winding that are built up by silicon steel punched chip form, wherein on iron core, be evenly distributed with 24 groove teeth, described winding evenly forms four group of 3 phase winding on 24 groove teeth, and the angle between every group of 3 phase windings is 15 degree.

For making the utility model play better technique effect, further technical scheme is that the electrical degree between adjacent two of above-mentioned groove tooth is 165 degree.

The beneficial effect that adopts technique scheme to produce is: the utility model is due to the increase of thulium permanent magnet, location is counted many, corresponding location torque is little, output torque is steady, phase conversion impact noise is little, efficiency is high, and the utility model is particularly suitable for power needs electric motor car, the boat system that reliability requirement is higher more than 5kW.

Brief description of the drawings

Fig. 1 is the structural representation of an embodiment of a kind of 12 phase brushless DC motors of the utility model;

Fig. 2 is the vector distribution map of an embodiment of a kind of 12 phase brushless DC motors of the utility model shown in Fig. 1.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

Fig. 1 and Fig. 2 show an embodiment of a kind of 12 phase brushless DC motors of the utility model: a kind of 12 phase brushless DC motors, comprise the rotor and the stator that are arranged in casing 5, described stator center is provided with axle core 4, described rotor is to be evenly distributed on casing 5 inwalls by 22 thulium permanent magnets 6 to form, described rotor is that the iron core 1 and the winding 3 that are built up by silicon steel punched chip form, wherein on iron core 1, be evenly distributed with 24 groove teeth 2, described winding 3 evenly forms four group of 3 phase winding on 24 groove teeth 2, angle between every group of 3 phase windings is 15 degree, be that the adjacent vector angle shown in Fig. 2 is 15 degree.

According to another embodiment of a kind of 12 phase brushless DC motors of the utility model (scheming not shown), a kind of 12 phase brushless DC motors, comprise the rotor and the stator that are arranged in casing 5, described stator center is provided with axle core 4, described rotor is to be evenly distributed on casing 5 inwalls by 26 thulium permanent magnets 6 to form, described rotor is that the iron core 1 and the winding 3 that are built up by silicon steel punched chip form, wherein on iron core 1, be evenly distributed with 24 groove teeth 2, described winding 3 evenly forms four group of 3 phase winding on 24 groove teeth 2, angle between every group of 3 phase windings is 15 degree.

According to an embodiment of a kind of 12 phase brushless DC motors of the utility model, the electrical degree between adjacent two of described groove tooth 2 is 165 degree, compares closer to 180 degree equilibrium valves than existing 150 degree, and therefore motor location torque is very little.

Effectively having increased rotor locates and counts weekly, reduce location torque, in the situation that every phase power is constant, because the number of phases increases, power of motor strengthens, because the number of phases is more, if wherein one group of motor or controller have part to damage mutually, can remaining in operation of remaining other complete 3 phase structures, thus the reliability of drive system increased.

" embodiment ", " another embodiment ", " embodiment ", " preferred embodiment " etc. spoken of in this manual, refer in conjunction with specific features, structure or the feature of this embodiment description and be included at least one embodiment of the application's generality description.In specification, multiple local appearance statement of the same race is not necessarily to refer to same embodiment.Furthermore, while describing a specific features, structure or feature in conjunction with arbitrary embodiment, what advocate is to realize this feature, structure or feature in conjunction with other embodiment also to drop in scope of the present utility model.

Although the utility model is described with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and execution modes, within these amendments and execution mode will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.

Claims

1. a phase brushless DC motor, comprise the rotor and the stator that are arranged in casing (5), described stator center is provided with axle core (4), it is characterized in that: described rotor is to be evenly distributed on casing (5) inwall by 22 or 26 thulium permanent magnets (6) to form, described rotor is that the iron core (1) and the winding (3) that are built up by silicon steel punched chip form, wherein on iron core (1), be evenly distributed with 24 groove teeth (2), described winding (3) is evenly around four group of 3 phase winding of the upper formation of 24 groove teeth (2), angle between every group of 3 phase windings is 15 degree.

2. a kind of 12 phase brushless DC motors according to claim 1, is characterized in that: the electrical degree between adjacent two of described groove tooth (2) is 165 degree.