CN208548818U

CN208548818U - A kind of permanent magnet motor suitable for Full-automatic coiling technique

Info

Publication number: CN208548818U
Application number: CN201821134710.3U
Authority: CN
Inventors: 江林飞; 沈智威; 林强; 计玉峰; 章冬冬; 费旭
Original assignee: Yongchang Zhejiang Electric Ltd By Share Ltd
Current assignee: Yongchang Zhejiang Electric Ltd By Share Ltd
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2019-02-26
Anticipated expiration: 2028-07-18

Abstract

The utility model relates to permanent magnet motor technical fields, specially a kind of permanent magnet motor suitable for Full-automatic coiling technique, including rotor and stator, the rotor uses patch type permanent magnet, the stator tooth of the stator uses concentratred winding, the ratio between width of rebate S2 between interval S 1 and adjacent two stator tooth between adjacent two permanent magnet is 1.2, the ratio between the width D 1 of the permanent magnet and pole span D2 are 0.8, and wherein pole span D2 is the sum of the interval S 1 between the width D 1 and adjacent two permanent magnet of the permanent magnet；The rotor is equipped with plastic packaging slot in the permanent magnet two sides, is equipped with the plastic-sealed body for clamping the permanent magnet in the plastic packaging slot.The utility model uses patch type permanent magnet and concentratred winding, cost is reduced in the case where permanent magnet performance is constant, and improve the location torque of concentratred winding by specific rotor stator structure, and guarantee the stability of permanent magnetism running body by plastic-sealed body.

Description

A kind of permanent magnet motor suitable for Full-automatic coiling technique

Technical field

The utility model relates to permanent magnet motor technical field, specially a kind of permanent magnetism suitable for Full-automatic coiling technique Motor.

Background technique

The rotor of permanent magnet motor generally uses rare-earth permanent magnet, such as Nd-Fe-B permanent magnet.Rare-earth permanent magnet material is just More and more rare, price is more and more expensive, therefore must reduce the dosage of permanent magnet and improve the utilization rate of permanent magnet, and guarantee forever Magnet is not easily to fall off when running.

The magneto of concentratred winding can significantly improve the energy index of magneto, such as: winding utilization, effect Rate, power to volume ratio, torque volume ratio etc., and improve motor manufacturing technology.

However, location torque is bigger than normal the problem of being concentratred winding magneto, preferably number of magnetic poles and the cooperation of tooth socket number can To inhibit location torque, to keep the optinal plan of concentratred winding magneto considerably less.Utility model patent ZL200780009121.0 proposes a kind of large, medium and small tooth stator structure to inhibit location torque；ZL200920204762.8 is mentioned Preferably the tooth socket number of number of magnetic poles and large and small tooth cooperates to inhibit location torque out；The stator punching of such methods must use Tile configuration after piece coiling, is then assembled into stator body, or small tooth is removed rear coiling, then small tooth group is installed.These Method all cannot achieve direct Full-automatic coiling, increase process costs and fabrication error bring risk.

The magneto ratio of the magneto of concentratred winding and traditional Distributed Winding, the tooth socket number of stator have at least lacked 3 times, That is, the slot number of concentratred winding magneto is few and slot pitch is very big, motor manufacturing technology can be simplified, but also so that concentrating Winding permanent magnet motor loses using an oblique slot pitch possibility for effectively inhibiting location torque, because of concentratred winding magneto The mechanical angle and electrical angle all toos of an oblique slot pitch are big.Therefore traditional Distributed Winding magneto inhibits location torque Most effective measure, concentratred winding magneto cannot use, and it is still big that concentratred winding magneto location torque is bigger than normal Problem.

Utility model content

The utility model in view of the problems of the existing technology, propose it is a kind of it is at low cost, location torque is small, stable Full-automatic coiling technique.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of suitable for Full-automatic coiling technique Permanent magnet motor, including rotor and stator, the rotor use patch type permanent magnet, the stator tooth of the stator using concentrate around Group, the ratio between the width of rebate S2 between interval S 1 and adjacent two stator tooth between adjacent two permanent magnet is 1.2, institute Stating the ratio between width D 1 and pole span D2 of permanent magnet is 0.8, and wherein pole span D2 is described in the width D 1 and adjacent two of the permanent magnet The sum of interval S 1 between permanent magnet；The rotor is equipped with plastic packaging slot in the permanent magnet two sides, is equipped with folder in the plastic packaging slot Hold the plastic-sealed body of the permanent magnet.

Preferably, the plastic-sealed body is equipped with the class right angle confined planes to offset with the permanent magnet.

Preferably, the plastic-sealed body is equipped with the right angle limit body connecting with the rotor engagement.

Preferably, the stator tooth is arranged to male-female-male structure towards the rotor-side.

Preferably, being equipped with shrinkage pool among the permanent magnetism outside.

The utility model has the beneficial effects that the utility model uses patch type permanent magnet and concentratred winding, in permanent magnet Cost is reduced in the case that performance is constant, and improves the location torque of concentratred winding by specific rotor stator structure, and Guarantee the stability of permanent magnetism running body by plastic-sealed body.

Detailed description of the invention

Fig. 1 is that a kind of structure of the rotor stator suitable for the permanent magnet motor of Full-automatic coiling technique of the utility model is shown It is intended to；

Fig. 2 is the local Fang great Tu of rotor stator in Fig. 1；

Fig. 3 is the structural schematic diagram of permanent magnet in Fig. 1；

Wherein, 1, rotor, 2, stator, 3, permanent magnet, 31, shrinkage pool, 4, stator tooth, 5, plastic-sealed body.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1 to Figure 3, a kind of permanent magnet motor suitable for Full-automatic coiling technique, including rotor 1 and stator 2, The rotor 1 uses patch type permanent magnet 3, can reduce cost.The stator tooth 4 of the stator 2 use concentratred winding, concentrate around The permanent magnet motor of group can significantly improve the performance of permanent magnet motor.

The ratio between the width of rebate S2 between interval S 1 and adjacent two stator tooth 4 between adjacent two permanent magnet 3 Be 1.2, the ratio between the width D 1 of the permanent magnet 3 and pole span D2 be 0.8, wherein pole span D2 be the permanent magnet 3 width D 1 with The sum of interval S 1 between adjacent two permanent magnet 3.The rotor stator structure of the utility model makes the magnetic field of concentratred winding just String is optimised, and air-gap field sine is good, and the location torque of motor is smaller.By strengthening and utilizing 3 spacing of permanent magnet The mutation of two edge magnetic resistance of the notch between the mutation of two side fringe field intensity, stator tooth 4 interacts in the two Under, double the frequency of location torque, so that harmonic amplitude be made to reduce one times, i.e., the utility model improves location torque Frequency, it is suppressed that location torque amplitude.The width of rebate S2 of motor can be given by artificially design simultaneously, thus stator slot Mouth can sufficiently meet the requirement of direct Full-automatic coiling.

The rotor 1 is equipped with plastic packaging slot in 3 two sides of permanent magnet, is equipped in the plastic packaging slot and clamps the permanent magnet 3 Plastic-sealed body 5, can guarantee that permanent magnet 3 is not easily to fall off at runtime by plastic-sealed body 5.The plastic-sealed body 5 is equipped with and the permanent magnetism The class right angle confined planes that body 3 offsets, such right angle confined planes offset with the outer surface of permanent magnet 3 and side, can prevent permanent magnet 3 It falls off.The plastic-sealed body 5 is equipped with the right angle limit body being cooperatively connected with the rotor 1, right angle limit body and 1 inside phase of rotor It supports, prevent plastic-sealed body 5 or so or moves up and down, so that permanent magnet 3 be avoided to fall off.

The stator tooth 4 is arranged to male-female-male structure, as biconvex waveform towards 1 side of rotor, stator tooth 4 Air gap surface is in biconvex waveform, is equivalent to and has been increased to the magnetic resistance change rate frequency of stator tooth 4 twice, to further decrease Location torque amplitude.

Shrinkage pool 31 is equipped among 3 lateral surface of permanent magnet, the size of shrinkage pool 31 can be adjusted according to the actual situation, properly Shrinkage pool 31 can further decrease the size of location torque.

Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this The conception and scope of type is defined.Without departing from the design concept of the present utility model, ordinary people in the field is to this The all variations and modifications that the technical solution of utility model is made, should fall within the protection scope of the present utility model, this is practical Novel claimed technology contents, are all described in the claims.

Claims

1. a kind of permanent magnet motor suitable for Full-automatic coiling technique, it is characterised in that: including rotor (1) and stator (2), institute Rotor (1) is stated using patch type permanent magnet (3), the stator tooth (4) of the stator (2) uses concentratred winding, described in adjacent two forever The ratio between width of rebate S2 between interval S 1 and adjacent two stator tooth (4) between magnet (3) is 1.2, the permanent magnet (3) the ratio between width D 1 and pole span D2 are 0.8, wherein pole span D2 be described in the width D 1 and adjacent two of the permanent magnet (3) forever The sum of interval S 1 between magnet (3)；The rotor (1) is equipped with plastic packaging slot in the permanent magnet (3) two sides, in the plastic packaging slot Equipped with the plastic-sealed body (5) for clamping the permanent magnet (3).

2. a kind of permanent magnet motor suitable for Full-automatic coiling technique according to claim 1, it is characterised in that: described Plastic-sealed body (5) is equipped with the class right angle confined planes to offset with the permanent magnet (3).

3. a kind of permanent magnet motor suitable for Full-automatic coiling technique according to claim 1, it is characterised in that: described Plastic-sealed body (5) is equipped with the right angle limit body being cooperatively connected with the rotor (1).

4. a kind of permanent magnet motor suitable for Full-automatic coiling technique according to claim 1, it is characterised in that: described Stator tooth (4) is arranged to male-female-male structure towards the rotor (1) side.

5. a kind of permanent magnet motor suitable for Full-automatic coiling technique according to claim 1, it is characterised in that: described Shrinkage pool (31) are equipped among permanent magnet (3) lateral surface.