CN2833990Y

CN2833990Y - Novel high-efficiency permanent magnetic DC motor

Info

Publication number: CN2833990Y
Application number: CN 200520075967
Authority: CN
Inventors: 任宏生
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-30
Filing date: 2005-09-30
Publication date: 2006-11-01
Anticipated expiration: 2015-09-30

Abstract

The utility model relates to a novel high-efficiency permanent magnetic DC motor which is composed of a motor stator (5), a rotor (4), a shaft (1), a bearing (7), a winding (6) and a side cover (2), wherein a stator component is composed of the stator (5) and the shaft (1) of which silicon steel punching sheets (8) are well stacked, and wire grooves (9) are arranged in the silicon steel punching sheets (8). A rotor component is composed of a permanent magnet and a rotor magnetic yoke (4-1), the permanent magnet is formed by the way that flat plate magnetic steel (4-2) is evenly distributed into a polygon which is similar to a circle according to an N-N-S-S-N-N-S-S mode along the rotor magnetic yoke, and the dimension of a magnetic pole which is formed from each single piece of flat plate magnetic steel is consistent. The high-efficiency permanent magnetic DC motor has the characteristics of small size, light weight, high power, high efficiency, low cost, etc.

Description

The highly effective permanent-magnet direct current machine

Technical field

The utility model relates to a kind of electric rotating machine of dynamo-electric field, refers to a kind of permanent magnet DC motor that is applied to electric motor car especially.

Background technology

Rare earth permanent magnetic dc motor is because of simple in structure, and is easy to maintenance, uses and develops very fastly, along with the development of electronic technology, control technology, has been widely used in electric vehicle.But because there is following shortcoming in prior art: under equivalent weight, equal speed conditions, the minor diameter power of motor is little, efficient is low, electric current is big, energy consumption is high, cost is high.

Summary of the invention

The purpose of this utility model is the shortcoming that exists at the minor diameter motor, provide that a kind of cost is low, efficient is high, the direct current machine of high-power electromagnet structure, the low speed that is used in the wheel 100-600 rev/min scope directly drives, and has characteristics such as volume is little, efficient is high, overload capacity is strong than the motor of traditional structural design.

The technical solution of the utility model is: motor is by stator, rotor, axle, bearing, winding, the limit lid is formed, stator after the silicon steel punching is folded and axle constitute stator component, be shaped on wire casing in the silicon steel punching, permanent magnet and rotor yoke constitute rotor part, permanent magnet by dull and stereotyped magnet steel along changeing yoke by the uniform polygon that constitutes approximate circle of the mode of N-N-S-S-N-N-S-S, the pole dimension that each monolithic magnet steel is formed is identical, dull and stereotyped magnet steel is arranged also and can be arranged or multi-disc assembled arrangement more for the N-N-N-S-S-S-N-N-N-S-S-S mode, the dull and stereotyped magnet steel of each sheet is measure-alike, between sticking mutually by glue, or fixedly connected with mechanical system.

This permanent magnet DC motor adopts multi-disc same polarity magnet steel to be spliced into the unipolarity magnetic pole, can effectively reduce polygonal deviation in roundness, improve the uniformity of air gap, and manufacturing cost reduces obviously; Owing to adopt few groove multipole, increased the number of poles of motor, can effectively reduce pulsation, it is long-pending that few groove structure can effectively increase slot cross-section, increases parts number; Coil windings adopts the short distance winding, reduces internal resistance and end wear, has both increased power, raises the efficiency again.

Description of drawings

Fig. 1 is the structural representation of the utility model permanent magnet DC motor;

Fig. 2 is the structural representation of the utility model permanent magnet DC motor rotor part;

Fig. 3 is the structural representation of the dull and stereotyped magnet steel of the utility model motor;

Fig. 4 is the structural representation of the utility model stator punching;

Fig. 5 is the structural representation of the utility model stator punching wire casing.

In Fig. 1,2,3,4,5, axle 1, limit lid 2, screw 3, rotor 4, rotor yoke 4-1, dull and stereotyped magnet steel 4-2, stator 5, winding 6, bearing 7, silicon steel punching 8, wire casing 9.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

The utility model discloses a kind of highly effective permanent-magnet direct current machine, form by motor stator 5, rotor 4, axle 1, bearing 7, winding 6, limit lid 2, link to each other by screw 3 between limit lid 2 and the rotor 4, stator 5 after silicon steel punching 8 is folded and axle 1 constitute stator component, be shaped on wire casing 9, permanent magnet and rotor yoke 4-1 in the silicon steel punching 8 and constitute rotor part, permanent magnet is that dull and stereotyped magnet steel 4-2 is along changeing the polygon of yoke by the uniform approximate circle of mode of N-N-S-S-N-N-S-S, the pole dimension unanimity that the dull and stereotyped magnet steel of each monolithic is combined into.The permanent magnet arrangement mode can also be arranged for N-N-N-S-S-S-N-N-N-S-S-S, also can be multi-disc assembled arrangement more.Silicon steel punching 8 external diameters are 110mm, and the wire casing number is 18, and dull and stereotyped magnet steel is 40, press N-N-S-S-N-N-S-S and arrange, and constitute 10 pairs of magnetic fields.Motor is an outer-rotor structure, also can be inner rotor core.

Claims

1, highly effective permanent-magnet direct current machine, form by motor stator (5), rotor (4), axle (1), bearing (7), winding (6), limit lid (2), stator (5) after silicon steel punching (8) is folded and axle (1) constitute stator component, be shaped on wire casing (9), permanent magnet and rotor yoke (4-1) in the silicon steel punching (8) and constitute rotor part, it is characterized in that described permanent magnet is that dull and stereotyped magnet steel (4-2) is pressed the polygon of the uniform one-tenth approximate circle of mode of N-N-S-S-N-N-S-S along rotor yoke, the pole dimension unanimity that the dull and stereotyped magnet steel of each monolithic is combined into.

2, highly effective permanent-magnet direct current machine according to claim 1 is characterized in that described permanent magnet arrangement mode can arrange for N-N-N-S-S-S-N-N-N-S-S-S, also can be multi-disc assembled arrangement more.

3, highly effective permanent-magnet direct current machine according to claim 1 is characterized in that described silicon steel punching (8) external diameter is 110mm, and the wire casing number is 18, and dull and stereotyped magnet steel is 40, presses N-N-S-S-N-N-S-S and arranges, and constitutes 10 pairs of magnetic fields.

4, highly effective permanent-magnet direct current machine according to claim 1 is characterized in that described motor is an outer-rotor structure, also can be inner rotor core.

5, highly effective permanent-magnet direct current machine according to claim 1 is characterized in that described motor can be a brushless electric machine, also brush motor.