CN201041974Y

CN201041974Y - A dual protrusion pole axial magnetic field permanent magnetic electromotor

Info

Publication number: CN201041974Y
Application number: CNU2007200894052U
Authority: CN
Inventors: 吕灿华; 熊巨藩
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-07
Filing date: 2007-02-07
Publication date: 2008-03-26
Anticipated expiration: 2017-02-07

Abstract

The utility model relates to a double salient pole axial-field permanent magnet motor which can effectively solve the problems of complex structure, high cost, short life, poor performance and low specific power of motors for a vehicle. The technical proposal for solution consists of a stator, a rotor and support parts, wherein a columnar iron core of the stator is the external magnetic circuit of a magnetic loop and forms stator salient poles; the rotor with a permanent magnet forms directly rotor salient poles via a flat magnet; the number of the rotor poles is larger than, equal to or smaller than that of the stator poles; the number of the rotor poles is one and a half or one and one third times that of the stator poles. The utility model can carry out winding with high density and high speed, thereby not only improving the utilization of the material but also simplifying the production process. The utility model has high production efficiency, small size, light weight, low cost and long service life. In addition, direct low-speed large-moment output can improve the single specific power. So the utility model has high values of popularization and application and can produce tremendous economic benefits.

Description

A kind of biconvex pole axis is to the magnetic field permanent magnet motor

One, technical field

The utility model relates to electrical equipment, and particularly a kind of biconvex pole axis is to the magnetic field permanent magnet motor.

Two, background technology

Along with science and technology development, various forms of motor are extensively used it.But, because the problem that exists on the structure, all there is problem in various degree in motor in the market, as the electric bicycle motor, all are the traditional structures that adopt radial magnetic field, stator core is to be overrided to form by the disk jet-bedding, rule, not only complex process in the groove, and stock utilization is low, volume is big, and is heavy, the cost height; The disc-type electric motor of axial magnetic field and for example, technology is more complicated, and cost is higher, especially need be with decelerator as vehicula motor, often adopt the semiaxis structure, intensity reduces like this, and useful life is short, the failure rate height, be difficult to effective popularization and application, re-use hardly at present, therefore, the innovation of motor is imperative.

Three, utility model content

At above-mentioned situation, the purpose of the utility model just provides a kind of biconvex pole axis to the magnetic field permanent magnet motor, can effectively solve the vehicula motor complex structure, the cost height, life-span is short, poor performance, the problem that specific power is low, the technical scheme of its solution is, by stator, rotor and support component are formed, the columnar iron core of stator becomes the external magnetic circuit of magnetic loop, forms stator salient poles, has the rotor of permanent magnet, directly form rotor with salient pole by flat magnet, its rotor number of poles is more than stator poles, or equates or be less than stator poles, and the rotor number of poles is 1.5 times or 4/3 times of stator poles; But the utility model high density, the high-speed coiling have been improved the utilance of material, have simplified production technology again, the production efficiency height, volume is little, and is in light weight, and cost is low, long service life, the directly big moment output of the slow-speed of revolution can improve the unit specific power again, and it is applied, and economic benefit is huge.

Four, description of drawings

Fig. 1 is a kind of hub-type axial magnetic field of one of the utility model embodiment, the structural representation of birotor doubly salient permanent magnet motor.

Fig. 2 is a birotor permanent magnetic electric motor structure schematic diagram in a kind of axial magnetic field of two of the utility model embodiment.

Fig. 3 is the two stators of a kind of axial magnetic field of three of the utility model embodiment, single rotor permanent magnet motor structural representation.

Five, embodiment

Below in conjunction with embodiment embodiment of the present utility model is elaborated.

Embodiment one, sees shown in Figure 1ly, is hub-type electric machine of the present utility model.Structure is: coil 4 is arranged above the columnar iron core 7, by circle distribution, fixing by non-magnetic conduction stator plate 8, stator plate 8 tightens together with motionless axle 11, lead-in wire is drawn from the centre bore 10 of axle, above the rotor yoke 1 of magnetic conduction, fixing flat magnet steel 2 by certain requirement, rotor yoke 1 is fastening with the wheel hub 6 of band spoke 5, rotate around axle 11 by bearing 9, form air gap 3 between stator and the rotor, rotor yoke double as end cap constitutes single stator, birotor hub-type electric machine.

Embodiment two, see that shown in Figure 2 is the rotary permanent magnet motor of axle of the present utility model, structure is: the stator core 7 that has coil 4, fixing by stator plate 8, become stator, the outer of stator plate is placed in the middle of two end caps 12 and fastened location, lead-in wire is drawn by the end cap side opening, and rotor yoke 1 is fastening with axle 11, and axle 11 supports rotation by bearing 9 by end cap 12, place flat magnet steel 2 by certain requirement on the rotor yoke 1, form rotor, occupy the stator both sides, be with fan blade 13 on the rotor yoke, have on the end cap axially and hole aweather, footpath, form air gap 3 between stator and the rotor, its fan blade that is used to dispel the heat 13 is at rotor, or between two rotors, be fixed together with rotating shaft, constitute spinner motor.

Embodiment three, see shown in Figure 3, be of the present utility model pair of stator, single rotor axial field electric motor makes, structure is: on the columnar iron core 7 of stator coil 4 is housed, be fixed on the stator yoke 15 of magnetic conduction, form two stators, fastening with two end caps 12 respectively, on the rotor plate 14 of non-magnetic conduction, place flat magnet steel 2 and fan blade 13, rotor plate 14 is fastening with axle 11, be placed between two stators, support rotation by end cap 1, have on the end cap axially and hole aweather, footpath by bearing 9, form air gap 3 between stator and the roller, constitute two stators, single rotor motor.

From the foregoing description, can find out, iron core all is rolled into by band, the silicon steel utilance can reach 100%, realized no waste material iron core forming, winding adopts layering close around, no termination part, and the utilance of copper can improve 20-30%, especially change traditional magnetic circuit system, be able to the foolproof hub-type electric machine that makes.

The utility model has changed the magnetic circuit system of motor, use flat magnet (steel) in addition, not only improved the quality that magnetizes, saved permanent magnetic material, made magnetic circuit system more reasonable again, given full play to the magnetic property of permanent magnet, alleviate the demagnetizing effect that armature reaction is brought, and then improve motor performance and useful life, the structure of motor, installation, technology are simplified, improved production efficiency and raw-material utilance, reduced cost; Technology is easy to obtain the big moment output of the slow-speed of revolution simply again, can improve the unit specific power again.

The utility model is a kind of jet-bedding that do not need, the birotor of rule, biconvex pole axis be not to magnetic field hub-type electric machine, according to having or not transducer, can make brush or brushless motor, rotor pole is easy to realize direct slow-speed of revolution output more than stator poles, and rotor combines firmly convenient with wheel hub, become the hub-type electric machine easily, the motor profile is flat, and magnetic circuit system is to be made of the rotor yoke of both sides (double as end cap), magnet steel, working gas gap and iron core.The rotor and the wheel hub of both sides combine, the big moment output of the slow-speed of revolution, and directly drive wheels is the desirable drive motors of electric motor car, is that a big creativeness of motor is reformed and improved, and applies, economic and social benefit is huge.

Claims

1. a biconvex pole axis is to the magnetic field permanent magnet motor, form by stator, rotor and support component, it is characterized in that, the columnar iron core of stator becomes the external magnetic circuit of magnetic loop, form stator salient poles, have the rotor of permanent magnet, directly form rotor with salient pole by flat magnet, its rotor number of poles is more than stator poles, or equates or be less than stator poles.

2. a kind of biconvex pole axis according to claim 1 is characterized in that to the magnetic field permanent magnet motor rotor number of poles is 1.5 times or 4/3 times of stator poles.

3. a kind of biconvex pole axis according to claim 1 is to the magnetic field permanent magnet motor, it is characterized in that, coil (4) is arranged above the columnar iron core (7), by circle distribution, fixing by non-magnetic conduction stator plate (8), stator plate (8) tightens together with motionless axle (11), lead-in wire is drawn from the centre bore (10) of axle, above the rotor yoke of magnetic conduction (1), fixing flat magnet steel (2), rotor yoke (1) is fastening with the wheel hub (6) of band spoke (5), rotate around axle (11) by bearing (9), form air gap (3) between stator and the rotor, rotor yoke double as end cap constitutes single stator, birotor hub-type electric machine.

4. a kind of biconvex pole axis according to claim 1 is to the magnetic field permanent magnet motor, it is characterized in that, the stator core (7) that has coil (4), fixing by stator plate (8), become stator, the outer of stator plate is placed in the middle of two end caps (12) and fastened location, lead-in wire is drawn by the end cap side opening, and rotor yoke (1) is fastening with axle (11), and axle (11) supports rotation by bearing (9) by end cap (12), rotor yoke (1) is gone up by certain requirement and is placed flat magnet steel (2), form rotor, occupy the stator both sides, be with fan blade (13) on the rotor yoke, have on the end cap axially and hole aweather, footpath, form air gap (3) between stator and the rotor, its fan blade that is used to dispel the heat (13) is at rotor, or between two rotors, be fixed together with rotating shaft, constitute spinner motor.

5. a kind of biconvex pole axis according to claim 1 is to the magnetic field permanent magnet motor, it is characterized in that, coil (4) is housed on the columnar iron core of stator (7), be fixed on the stator yoke (15) of magnetic conduction, form two stators, fastening with two end caps (12) respectively, on the rotor plate of non-magnetic conduction (14), place flat magnet steel (2) and fan blade (13), rotor plate (14) is fastening with axle (11), is placed between two stators, support rotation by bearing (9) by end cap (1), have on the end cap axially and hole aweather, footpath, form air gap (3) between stator and the roller, constitute two stators, the single rotor motor.