CN102255465A

CN102255465A - Brushless permanent magnet direct current motor for automobile

Info

Publication number: CN102255465A
Application number: CN201110199040XA
Authority: CN
Inventors: 钱东高; 陈春荣
Original assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Current assignee: WUXI SOUTHEAST VEHICLE TECHNOLOGY Co Ltd
Priority date: 2011-07-17
Filing date: 2011-07-17
Publication date: 2011-11-23

Abstract

The invention provides a brushless permanent magnet direct current motor for an automobile. The brushless permanent magnet direct current motor has a compact and reasonable structure. A controller has a good controlling effect, a rotor rotates in a predetermined direction, and high reliability is achieved. The brushless permanent magnet direct current motor comprises a stator, an outer rotor and an insulating system, and is characterized in that: the circular-arc top surface of a T-shaped toothed part of the stator is provided with a gap according to a magnetic path; and a rotating magnetic field is formed around the gap.

Description

Automobile brush-less permanent magnetic direct current machine

Technical field

The present invention relates to brush-less permanent magnetic direct current machine in the electrical technology, be specially automobile brush-less permanent magnetic direct current machine.

Background technology

At present, automobile adopts with blower fan the brush direct current machine, power is 90W-800W, the structure of this motor comprises rotor, the brush mount component of stator, band commutator, includes carbon brush, spring, brush room, vibration damping part in the brush mount component again, wherein commutator and carbon brush structure complexity, installing space is big, and owing to the contact resistance of commutator that the brush direct current machine is arranged and carbon brush is very big, influenced machine operation reliability and life-span, efficient is low.

Adopt dc brushless motor, dc brushless motor, good reliability now in the industry, be fit to automobile and use,, adopt the mode of no Hall control usually for simplified structure with blower fan, but the motor that does not have Hall control, need to be equipped with controller, and controller internal circuit complexity, contact is many, reliability also is difficult to guarantee, and the moment that controller control motor rotates, need be equipped with special circuit to the initial rotation direction of rotor, thereby also increase the complexity of controller.

Summary of the invention

At the defective of prior art, the invention provides a kind of automobile brush-less permanent magnetic direct current machine, its compact conformation is reasonable, and controller has good control effect, guarantees that rotor rotates according to set direction, the reliability height.

Technical scheme of the present invention is such: it comprises stator, external rotor and insulation system, it is characterized in that: the circular arc end face of the T shape tooth portion of described stator is jagged by magnetic Circuit Design, makes it form the magnetic field of rotation on every side.

It is further characterized in that: described insulation system comprises stator core, insulation plate, outlet seat, and described insulation plate comprises insulation plate, the plate that insulate down, and described stator core is clipped on describedly to be gone up the insulation plate and insulate between the plate down; Described insulation plate is by injection mo(u)lding; Described outlet seat comprises outlet column, outlet terminal, and the last installed surface of described outlet column connects outlet terminal.

Compared with prior art, advantage of the present invention is as follows:

(1) described brush-less permanent magnetic direct current machine, a magnetic field that is equivalent to rotate has been set up in design in air-gap field, jagged in the T of described stator shape tooth portion by magnetic Circuit Design, make air gap skewness between described stator and the described external rotor, the magnetic field intensity that produces, torsion difference, thus the magnetic field that rotates produced, described external rotor is fixed rotated to the breach direction, improve the reliability of brush-less permanent magnetic direct current machine work, simplified controller.

(2) adopted the insulation plate in the described insulation system, described insulation plate adopts the injection mo(u)lding of stator insulation injection mold, can guarantee electrical safety performance and product quality requirement, and can adapt to around the rule automated production.

(3) described outlet holder structure compactness is easy for installation, can be integrated with wiring, and described outlet terminal and external connection line can secure fixation.

Description of drawings

Fig. 1 is that a kind of automobile of the present invention adopts brush-less permanent magnetic DC motor structure schematic diagram;

Fig. 2 is a stator core breach schematic diagram of the present invention;

Fig. 3 is the Z place enlarged drawing among Fig. 2;

Fig. 4 is insulation plate of the present invention and stator core constitutional diagram;

Fig. 5 is an outlet seat schematic diagram of the present invention;

Fig. 6 is a stator module schematic diagram of the present invention.

Embodiment

See Fig. 1, shown in Figure 5, the present invention includes stator 1, external rotor 2 and insulation system 3, insulation system 3 comprises stator core 12, insulation plate, outlet seat 9, lays the insulation plate between stator core 12 and the polyester enamel insulated round copper wire, and 4 is fixed head.

See Fig. 2, Fig. 3 and shown in Figure 5, a magnetic field that is equivalent to rotate is set up in design in the magnetic field, press magnetic Circuit Design one breach in the T of stator 1 shape tooth portion, make air gap skewness between stator 1 and the external rotor 2, the magnetic field intensity that produces, torsion difference, thus the magnetic field that rotates produced, external rotor 2 is fixed rotated to the breach direction, improve the reliability of brush-less permanent magnetic direct current machine work, simplified controller; Outlet seat 5 comprises outlet column 10, outlet terminal 5, and the last installed surface of outlet column 10 connects outlet terminal 5, and outlet seat 9 compact conformations can be integrated with connecting line, and outlet terminal 5 can secure fixation with connecting line.

See Fig. 4, shown in Figure 5, stator core 12 is to be formed towards processing, folded system by silicon steel sheet, and stator core 12 around embedding polyester enamel insulated round copper wire, has been guaranteed stator 1 electrical safety performance according to Electromagnetic Design; The insulation plate comprises insulation plate 11, the plate 13 that insulate down, and the injection mo(u)lding of insulation plate employing stator insulation injection mold can be guaranteed electrical safety performance and product quality requirement, and can adapt to around the rule automated production.

See Fig. 6, stator module is installed in special tooling can conveniently carry out manual coiling, semi-automatic coiling, automatic winding by electrical schematic diagram.

Among Fig. 5: 6. be used for fixing outlet terminal; 7. be used for fixing the outlet seat; 8. be used for fixing winding over-bridge wire.

Claims

1. automobile brush-less permanent magnetic direct current machine, it comprises stator, external rotor and insulation system, it is characterized in that: the circular arc end face of the T shape tooth portion of described stator is jagged by magnetic Circuit Design, makes the magnetic field that forms rotation around it.

2. according to the described automobile of claim 1 brush-less permanent magnetic direct current machine, it is characterized in that: described insulation system comprises stator core, insulation plate, outlet seat, described insulation plate comprises insulation plate, the plate that insulate down, and described stator core is clipped on describedly goes up the insulation plate and down between the insulation plate; Described insulation plate is by injection mo(u)lding.

3. according to the described automobile of claim 1 brush-less permanent magnetic direct current machine, it is characterized in that: described outlet seat comprises outlet column, outlet terminal, and the last installed surface of described outlet column connects outlet terminal.