CN206332526U

CN206332526U - A kind of lenticular wire motor stator slot insulation structure

Info

Publication number: CN206332526U
Application number: CN201621295596.3U
Authority: CN
Inventors: 余国权
Original assignee: Tianjin Santroll Electric Automobile Technology Co Ltd
Current assignee: Borgwarner Powertrain Tianjin Co ltd
Priority date: 2016-11-30
Filing date: 2016-11-30
Publication date: 2017-07-14
Anticipated expiration: 2026-11-30

Abstract

The utility model discloses a kind of lenticular wire motor stator slot insulation structure and its manufacture craft, the insulation between stator core and lenticular wire conductor, lenticular wire conductor is realized by setting insulating materials respectively inside stator slot and on the outside of lenticular wire conductor, and eliminate insulating paper, segment space in stator slot is saved, is that the further copper factor that improves is made contributions.

Description

A kind of lenticular wire motor stator slot insulation structure

Technical field

The utility model is related to lenticular wire motor stator slot structure, and in particular to lenticular wire motor stator slot insulation structure.

Background technology

Current lenticular wire conductor is mainly used in the large-size machine equipment such as wind-driven generator, hydroelectric generator, outer in recent years There is large-scale application in the middle and high end electric generator of vehicle for providing brand, particularly the client using Toyota sedan system and thunder rice is representative In universal vehicle system, the application of lenticular wire motor is most.And in new-energy automobile, Toyota it is general it is sharp this, the mixing such as Lexus, BMW Power car, and listen wind, it is fertile blue up to etc. the motor that is all made at present using lenticular wire conductor Hairpin techniques of pure electric vehicle.

The motor made using lenticular wire conductor Hairpin techniques, is also a kind of motor of Distributed Winding technique, relative to biography The Distributed Winding motor of the use coiling scattering set coil of system, can significantly increase the fill-in ratio of groove inner wire, and can be significantly The height of reduction two ends End winding, and the motor that currently employed lenticular wire conductor Hairpin techniques make, its groove interior insulation system Insulating paper is generally set, and groove interior insulation paper is double Type B structures, to realize between slot insulation and conductor between conductor and iron core Layer insulation and phase insulation.

Above-mentioned pair of Type B lenticular wire conductor and stator slot interior insulation system, space is larger in groove shared by its insulating paper, have impact on groove The further raising of inner wire fill-in ratio, and because the consideration of manufacturability and mechanical strength, insulating paper can not be too thin, can increase Conductor each other and the thermal resistance between conductor and stator core, be unfavorable for further increase motor power density, therefore, have A kind of new lenticular wire conductor of necessity design and stator slot interior insulation system.

Utility model content

In order to solve the above problems, the utility model proposes a kind of lenticular wire motor stator slot insulation structure, by stator Set insulating materials exhausted between stator core and lenticular wire conductor, lenticular wire conductor to realize respectively inside groove and on the outside of lenticular wire conductor Edge, and insulating paper is eliminated, segment space in stator slot is saved, is that the further copper factor that improves is made contributions.

To achieve the above object, the technical solution of the utility model is：

It is fixed to be set in a kind of lenticular wire motor stator slot insulation structure, including stator core, lenticular wire conductor, the stator core Pilot trench, the lenticular wire conductor is placed in the stator slot, and insulating barrier is provided with the stator slot, for realize the stator slot with Many lenticular wire conductors are placed in insulating properties between the lenticular wire conductor, the stator slot.

The quantity of lenticular wire conductor is put according to the size of the stator slot and the size of the lenticular wire conductor in the stator slot Put, to improve the copper factor of the stator slot.

Further, the stator slot inner insulating layer is molded or sprayed by stator core and formed.

Preferably, the insulating barrier is wear-resisting polyimide resin or polyflon material.

The lenticular wire conductor includes internal layer, intermediate layer, outer layer, and the internal layer is pure conductor, and the intermediate layer is dielectric film, The outer layer is resin bed；Further, the dielectric film is paint film layer, it is preferable that the paint film layer material is polyimide varnish Film, the resinous layer material is wear-resisting polyimide resin or polyflon.

Compared to existing lenticular wire motor stator slot insulation structure, the utility model has remarkable advantage and beneficial effect, specifically It is presented as：

1. using lenticular wire motor stator slot insulation structure of the present utility model, insulating paper is saved, and save stator slot Interior space, can further improve stator copper factor, improve power of motor；

2. using lenticular wire motor stator slot insulation structure of the present utility model, insulating paper technology of the package is eliminated, is effectively carried The integral manufacturing efficiency of high motor.

Brief description of the drawings

Fig. 1 is lenticular wire motor stator structure schematic diagram；

Fig. 2 is existing lenticular wire motor stator slot built-in electrical insulation structure enlarged diagram；

Fig. 3 is the lenticular wire conductor structure enlarged diagram of existing lenticular wire motor；

Fig. 4 is the utility model lenticular wire motor stator slot built-in electrical insulation structure enlarged diagram；

Fig. 5 is the lenticular wire conductor structure enlarged diagram of the utility model lenticular wire motor.

Embodiment

Specific implementation method of the present utility model is as follows：

Lenticular wire motor is used as a kind of motor for improving motor stator copper factor, improving power of motor density, its copper factor pair The performances such as power of motor, specific energy have a very big impact, thus, further the stator slot inside conductor of increase lenticular wire motor is accounted for With rate, there is direct effect for improving motor performance, it is for this purpose, fixed the utility model proposes a kind of new lenticular wire motor Pilot trench insulation system and its technique, and electricity is improved with this come the wire occupation rate of lifting motor stator slot by the insulation system The copper factor of machine, illustrates embodiment of the present utility model below in conjunction with the accompanying drawings：

Fig. 1 is the stator structure schematic diagram of lenticular wire motor, wherein 1 being stator slot, 2 being stator core, in the stator slot 1 Portion is lenticular wire conductor, in the present embodiment exemplified by setting 4 lenticular wire conductors inside each stator slot.

Fig. 2 is existing lenticular wire motor stator slot built-in electrical insulation structure enlarged diagram, wherein 11 being lenticular wire conductor, 12 being exhausted Edge paper, the lenticular wire conductor 11 is arranged side by side in the stator slot 1, and the insulating paper 12 is by being folded into Type B structure juxtaposition Between each conductor of the lenticular wire conductor 11 and between the lenticular wire conductor 11 and the stator slot 1, the width of the stator slot 1 For Bs, be highly Hs, the thickness of the insulating paper 12 is t, then effective groove area of the stator slot 1 is (Bs-2*t) * (Hs- 6t)。

Fig. 3 is the lenticular wire conductor structure enlarged diagram of existing lenticular wire motor, wherein 110 being pure conductor, 13 being described pure The outside paint film layer of conductor 110, the thickness of the paint film layer 13 is δ, and the width of the lenticular wire conductor 11 is Wc, is highly Hc, then The occupied area of lenticular wire conductor 11 is (Wc-2* δ) * (Hc-2* δ).

Above-mentioned is existing lenticular wire motor stator slot insulation structure, due to the consideration of manufacturability and mechanical strength, described exhausted Edge paper 12 can not be too thin, thus, and it is larger that the insulating paper 12 accounts for space in the stator slot 1, have impact on institute in the stator slot 1 The further raising of the fill-in ratio of lenticular wire conductor 11 is stated, moreover, the larger thickness of the insulating paper 12 can increase the lenticular wire conductor Thermal resistance between 11 mutual and described lenticular wire conductors 11 and stator core, is unfavorable for the radiating of machine winding, so as to limit Further increase the power density of motor.

Fig. 4 be the utility model lenticular wire motor stator slot built-in electrical insulation structure enlarged diagram, wherein 11 be lenticular wire conductor, 14 be insulating barrier, and the insulating barrier 14 is arranged on the inner side cell wall of stator slot 1, for realizing the lenticular wire conductor 11 with determining Mutually insulated between sub unshakable in one's determination, the material of the insulating barrier 14 can be wear-resisting polyimide resin or polyflon, The insulating barrier 14 is molded by stator core or sprayed and formed, and the thickness of the insulating barrier 14 can be controlled by mould or frock Degree, can improve the intensity and tack of the insulating barrier 14, the thickness of the insulating barrier 14 by adjusting injection or spray pressure Spend and be approximately equal to t/2 for t0, the thickness of insulating layer t0 commonly used at present.

Fig. 5 is the lenticular wire conductor structure enlarged diagram of the utility model lenticular wire motor, wherein 110 being pure conductor, 15 being Dielectric film, 16 are resin bed, and the lenticular wire conductor 11 includes pure conductor 110, dielectric film 15, the three-decker of resin bed 16, described Pure conductor 110, dielectric film 15, resin bed 16 are set gradually from the inside to the outside, and the dielectric film 15 is paint film layer, the paint film layer material Expect for polyimides paint film, the material of resin bed 16 is wear-resisting polyimide resin or polyflon, the insulation Film 15 and the thickness of resin bed 16 are that δ 0, at present conventional dielectric film and resin thickness δ 0 are about 1.5* δ, and the lenticular wire is led The width of body 11 is Wc0, is highly Hc0.

There is abrasion-proof insulating layer 14 in stator slot 1 described in the utility model, slot insulating paper can be played a part of, due to described Insulating barrier 14 while insulating properties and mechanical strength is ensured, can greatly reduce insulating barrier using injection or spraying coating process Thickness, the thickness of the insulating barrier 14 is less than the insulating paper 12, adds effective groove area, the outermost layer of lenticular wire conductor 11 Dielectric film 15 and resin bed 16 can as the layer insulation and phase insulation between conductor, can save extra layer insulation and Phase insulation, further increases effective groove area, and reduces between conductor and the thermal resistance between conductor and stator core, Be conducive to the use of the lenticular wire conductor of bigger specification, can further increase the power density of motor.Further, since insulation is used Expect the reduction of species, production technology can be simplified, be conducive to the raising of production efficiency.

For for one exemplary embodiment of the present utility model, it should be understood that be the guarantor of claims of the present utility model A certain demonstrative example therein in the range of shield, with the directiveness that those skilled in the art are realized with corresponding technical scheme Effect, rather than limit of the present utility model.

Claims

1. a kind of lenticular wire motor stator slot insulation structure, including stator core, lenticular wire conductor, it is characterised in that the stator iron Stator slot is set in the heart, and the lenticular wire conductor is placed in the stator slot, insulating barrier is provided with the stator slot, for realizing State and many lenticular wire conductors are placed in the insulating properties between stator slot and the lenticular wire conductor, the stator slot.

2. motor stator slot insulation structure according to claim 1, it is characterised in that lenticular wire conductor in the stator slot Quantity is placed according to the size of the stator slot and the size of the lenticular wire conductor, to improve the copper factor of the stator slot.

3. motor stator slot insulation structure according to claim 1, it is characterised in that the stator slot inner insulating layer passes through Stator core is molded or spraying is formed.

4. motor stator slot insulation structure according to claim 3, it is characterised in that the insulating barrier is that wear-resisting polyamides is sub- Polyimide resin or polyflon material.

5. motor stator slot insulation structure according to claim 1, it is characterised in that the lenticular wire conductor include internal layer, Intermediate layer, outer layer, the internal layer are pure conductor, and the intermediate layer is dielectric film, and the outer layer is resin bed.

6. motor stator slot insulation structure according to claim 5, it is characterised in that the dielectric film is paint film layer.

7. motor stator slot insulation structure according to claim 6, it is characterised in that the paint film layer material is that polyamides is sub- Amine paint film.

8. motor stator slot insulation structure according to claim 5, it is characterised in that the resinous layer material is wear-resisting poly- Imide resin or polyflon.