CN202353415U

CN202353415U - Permanent magnet coreless brushless electric machine

Info

Publication number: CN202353415U
Application number: CN2011205007827U
Authority: CN
Inventors: 张鹤; 叶经圣
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-06
Filing date: 2011-12-06
Publication date: 2012-07-25
Anticipated expiration: 2021-12-06

Abstract

The utility model relates to the field of electric machines, and aims to provide a permanent magnet coreless brushless electric machine with the advantages of small energy consumption, large torque, energy saving, portability and convenience in installation. The electric machine comprises a winding coil stator and a permanent magnet rotor, wherein the winding coil stator comprises a first winding coil and a second winding coil, and the permanent magnet rotor is positioned between the first winding coil and the second winding coil. In the electric machine disclosed by the utility model, the permanent magnet rotor is positioned between the first winding coil and the second winding coil, so that a magnetic energy pole S and a magnetic energy pole N of the permanent magnet rotor are fully utilized, and at the same time, a magnetic energy pole S and a magnetic energy pole N generated by the winding coils are also fully utilized, so that the electric machine is small in energy consumption, has large torque and is energy-saving and portable.

Description

Permanent magnetism does not have the iron core brushless electric machine

Technical field

The utility model relates to machine field, and especially relating to a kind of permanent magnetism does not have the iron core brushless electric machine.

Background technology

In electromechanical industries, be provided with iron core and coil in the traditional AC motor stator and rotor winding, motor is in operation; Exist metal loss and slot effect in stator, the rotor, brought a lot of defectives in the operation, simultaneously because metal-cored existence causes motor volume big; Quality is heavy, and metal loss makes motor operating temperature under rated power raise, and causes idle power consumption and damage; Especially, fields such as Aero-Space and Digit Control Machine Tool, motor vehicle are restricted in using; Along with the birth of permanent-magnet disk brushless electric machine, the deficiency of small-power conventional motors is progressively overcome, but will do high-power many technical limitations that also receives.

Chinese patent number is that 0022887.4 utility model discloses the high specific energy stacking permanent-magnetic of a kind of high efficiency and do not have the iron core brushless electric machine, though it has the advantage of permanent-magnet disk brushless electric machine, has improved the utilance of magnetic energy; But; Because its structure is stacked external rotor acting, the fixing relatively difficulty of structure itself, less stable; And be to drive whole external rotor acting by stator, energy consumption is bigger.

The utility model content

In order to solve the problems of the technologies described above, the utility model provides a kind of energy consumption little, and moment of torsion is big, and energy-conservation permanent magnetism light, easy for installation does not have the iron core brushless electric machine.

The permanent magnetism of the utility model does not have the iron core brushless electric machine, and it comprises winding coil stator and p-m rotor, and said winding coil stator comprises first winding coil and second winding coil, and said p-m rotor is between first winding coil and second winding coil.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, also comprises parallel/serial at least one group of stack of laminations in second winding coil outside.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and said stack of laminations is formed by stacking by a p-m rotor and a winding coil.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and said p-m rotor comprises permanent magnet fixed mount and polylith permanent magnet, and the polylith permanent magnet evenly is fixed on the permanent magnet fixed mount.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and said permanent magnet is pressed the N level on same sensitive surface, the S level is arranged around motor shaft successively.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and said winding coil comprises coil stationary frame and some groups of coils, and winding coil is a three-phase, and presses A, B, C and arrange in the center of circle of coiling fixed mount successively.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and the quantity of permanent magnet is at least four on the said p-m rotor.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and the quantity of winding coil is at least three on the said winding coil stator.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and the outside of said first winding coil is fixed with rotor angle sensor.

Further, the permanent magnetism of the utility model does not have the iron core brushless electric machine, and said rotor angle sensor is a Hall element.

Compared with prior art; The beneficial effect of the utility model is: p-m rotor makes the magnetic energy S level of p-m rotor and N level all be fully utilized, simultaneously between first winding coil and second winding coil; Magnetic energy S level and N level that winding coil produced also are fully utilized; Cause energy consumption little, moment of torsion is big, and is energy-conservation light.

Stack of laminations is formed by stacking by a p-m rotor and a winding coil, can improve magnetic, utilization rate of electrical and power output is strengthened greatly.

Description of drawings

Fig. 1 is the structure chart that permanent magnetism does not have the iron core brushless electric machine among the utility model embodiment 1;

Fig. 2 is the front view of p-m rotor;

Fig. 3 is the end view of Fig. 2;

Fig. 4 is the end view of the first winding coil stator;

Fig. 5 is the front view of Fig. 4;

Fig. 6 is the front view of the second winding coil stator;

Fig. 7 is the end view of Fig. 6;

Fig. 8 is the front view of motor shaft;

Fig. 9 is the sectional view of Fig. 8;

Figure 10 is the structure chart that permanent magnetism does not have the iron core brushless electric machine among the utility model embodiment 2.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.

Embodiment 1

Like Fig. 1-shown in Figure 9; The permanent magnetism of present embodiment does not have the iron core brushless electric machine; It comprises winding coil stator and p-m rotor; The winding coil stator comprises first winding coil 11 and second winding coil, 12, the first p-m rotors 21 between first winding coil 11 and second winding coil 12, and first winding coil 11 and second winding coil 12 are fixed by screw through screw 10.

Winding coil comprises coil stationary frame 5 and nine coils 6; Coil 6 is a layer structure; But multilayer is arranged, and winding coil 6 is a three-phase, presses A, B, C and arranges in the center of circle of coiling fixed mount successively; First winding coil, 11 outsides are fixed with rotor angle sensor 7, and rotor angle sensor 7 is a Hall element.

P-m rotor comprises permanent magnet fixed

mount

3 and 12 permanent magnets 4; 12 permanent magnets 4 are evenly distributed on the permanent magnet fixed mount 3; The same sensitive surface of permanent magnet 4 is pressed N level, S level and is arranged around motor shaft 8 successively, and the cross section of this motor shaft 8 is dumbbell shaped, also is provided with the through hole that is dumbbell shaped at the middle part of p-m rotor; The purpose that is set to dumbbell shaped is to let p-m rotor form one with motor shaft 8 be fixedly connected, and motor shaft 8 forms with coil stationary frame 5 through bearing 9 and flexibly connects.

Embodiment 2

Referring to Figure 10, the permanent magnetism among the utility model embodiment does not have the iron core brushless electric machine, is with embodiment 1 difference:

Also comprise the one group of stack of laminations that is connected on second winding coil, 12 outsides, stack of laminations is made up of with tertiary winding coil 13 second p-m rotor 22, can improve magnetic, utilization rate of electrical and power output is strengthened greatly.

The permanent magnetism of present embodiment does not have the iron core brushless electric machine, and the course of work is following:

When concrete work; Power supply links to each other with stator lead-out wire through speed adjuster, carries out break-make control through 7 pairs of winding coils of rotor angle inductor 6, produces the rotating magnetic field of a controllable frequency and certain intensity; Permanent magnet 4 on this rotating magnetic field and the rotor fixed mount 3 produces the suction effect that pushes away; Rotate thereby promote p-m rotor,, can make various dissimilar permanent magnetism and not have the iron core brushless electric machine with a plurality of stack of laminations according to desired watt level.

The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and modification, these improvement and modification also should be regarded as the protection range of the utility model.

Claims

1. a permanent magnetism does not have the iron core brushless electric machine; It comprises winding coil stator and p-m rotor; It is characterized in that: said winding coil stator comprises first winding coil and second winding coil, and said p-m rotor is between first winding coil and second winding coil.

2. permanent magnetism according to claim 1 does not have the iron core brushless electric machine, it is characterized in that: also comprise parallel/serial at least one group of stack of laminations in second winding coil outside.

3. permanent magnetism according to claim 2 does not have the iron core brushless electric machine, it is characterized in that: said stack of laminations is formed by stacking by a p-m rotor and a winding coil.

4. do not have the iron core brushless electric machine according to claim 1 or 3 described permanent magnetism, it is characterized in that: said p-m rotor comprises permanent magnet fixed mount and polylith permanent magnet, and the polylith permanent magnet evenly is fixed on the permanent magnet fixed mount.

5. permanent magnetism according to claim 4 does not have the iron core brushless electric machine, it is characterized in that: said permanent magnet is pressed the N level on same sensitive surface, the S level is arranged around motor shaft successively.

6. permanent magnetism according to claim 1 does not have the iron core brushless electric machine, it is characterized in that: said winding coil comprises coil stationary frame and some groups of coils, and winding coil is a three-phase, and presses A, B, C and arrange in the center of circle of coiling fixed mount successively.

7. permanent magnetism according to claim 1 does not have the iron core brushless electric machine, it is characterized in that: the quantity of permanent magnet is at least four on the said p-m rotor.

8. permanent magnetism according to claim 6 does not have the iron core brushless electric machine, it is characterized in that: the quantity of winding coil is at least three on the said winding coil stator.

9. permanent magnetism according to claim 1 does not have the iron core brushless electric machine, it is characterized in that: the outside of said first winding coil is fixed with rotor angle sensor.

10. permanent magnetism according to claim 9 does not have the iron core brushless electric machine, it is characterized in that: said rotor angle sensor is a Hall element.