CN110383640A - Coil wire used in stator, rotating electric machine, the manufacturing method of stator, the manufacturing method of rotating electric machine and stator - Google Patents
Coil wire used in stator, rotating electric machine, the manufacturing method of stator, the manufacturing method of rotating electric machine and stator Download PDFInfo
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- CN110383640A CN110383640A CN201880010877.5A CN201880010877A CN110383640A CN 110383640 A CN110383640 A CN 110383640A CN 201880010877 A CN201880010877 A CN 201880010877A CN 110383640 A CN110383640 A CN 110383640A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The present invention prevents the heat ageing of binder resin in the temperature rising of stator coil and in applying to the high voltage of stator coil, improves the insulating reliability of stator.Stator of the invention has: iron core, with rear of core and tooth；And electric wire, it includes the conductor coated by insulating layer and the 1st resins of the outer surface for coating insulating layer, and at least corner of the adjacent electric wire in the outer surface as the sectional coil of wirning harness is provided with the 2nd resin.
Description
Technical field
The present invention relates to make in stator, rotating electric machine, the manufacturing method of stator, the manufacturing method of rotating electric machine and stator
Coil wire.
Background technique
Closely related rotating electric machine is the infrastructure device for supporting modern society with industry and life.Especially for the earth
The viewpoint of environmental protection, hybrid vehicle and electric car are becoming increasingly popular.In these automobiles, really for installation space
The viewpoint that guarantor and lightweight bring fuel efficiency improve, it is desirable that small-sized, the lightweight of the motor as power source.
The insulation division of the stator slot of power motor used in hybrid vehicle and electric car is by being inserted into stator iron
It insulating paper (slot liner) between the heart/coil and between out-phase coil and fills their gap and coil and insulating paper is fixed to iron
The adhesive varnish of the heart constitutes (such as referenced patent document 1).
Existing technical literature
Patent document
Patent document 1: Japanese Patent Laid-Open 2013-9493 bulletin
Summary of the invention
Problems to be solved by the invention
In order to minimize power motor, the side for considering the method for improving driving voltage or improving coil current density
Method.However, both of which will lead to the increase of the load in the insulation division of stator interior loop, therefore, need to be arranged small for coping with
The insulation system of type.
Using improve driving voltage method in the case where, to be coped on the extension line of the prior art it is necessary to
Increase the thickness of insulating paper, ensure insulation distance corresponding with applied voltage.It is accounted for however, this method will lead to the coil in slot
Duty factor reduces, so that coil current reduces.Make up this point, it is necessary to coil current density is improved, thus unavoidable
The temperature of coil rises.
It, can be with coil as above situation using another method for improving coil current density
Temperature rise, therefore make power motor used in hybrid vehicle and electric car minimize when can become obstacle.
In the insulation division of previous stator, as adhesive varnish, even if being to use the operating of motor so that temperature rises, is viscous
The thermosetting resin that resultant force will not reduce.In order to be securely bonded together the member of formation in slot, consider to composition structure
The permeability in the gap between part and use the lower resin of viscosity.
In general, the heat resistance for improving the lower thermosetting resin of viscosity be it is relatively difficult, in coil current density
The temperature of the coil risen rises the heat ageing for becoming the binder resin in the insulation division with slot and next insulating reliability
Reduction the reason of.
It is an object of the invention to prevent in applying in the rising of the temperature of stator coil and to the high voltage of stator coil
The heat ageing of binder resin, the insulating reliability for improving stator.
Technical means to solve problem
Stator of the invention has: iron core, with rear of core and tooth；And electric wire, it includes coated by insulating layer
Conductor and coat insulating layer outer surface the 1st resin, it is adjacent in the outer surface as the sectional coil of wirning harness
At least corner of electric wire be provided with the 2nd resin.
The effect of invention
According to the present invention, it in the temperature of stator coil rises and applies to the high voltage of stator coil, can prevent
The resin crackle that occurs by the heat ageing of binder resin, the drop for preventing the partial discharge inception voltage because of caused by resin crackle
It is low, so as to improve the insulating reliability of stator.
Detailed description of the invention
Fig. 1 is the main view for the stator core for being expressed as insulation model assembling use used in Examples and Comparative Examples and cutting
Figure.
Fig. 2 is the perspective view for indicating assembled insulation model.
Fig. 3 is the sectional view for indicating assembled insulation model.
Fig. 4 is the amplification sectional view for indicating a part of former-wound coil of embodiment.
Fig. 5 is the amplification sectional view for indicating to implement a part of the former-wound coil of heat cure treated embodiment.
Fig. 6 is the schematic isometric of the resin crackle after the heat ageing for indicating comparative example.
Fig. 7 is the enlarged partial cross-sectional for indicating to implement the detailed construction of the former-wound coil of heat cure treated embodiment 1
Figure.
Fig. 8 is the flow chart for indicating the example of manufacturing method of stator in kind.
Fig. 9 is the sectional view for indicating the rotating electric machine equipped with stator of the invention.
Figure 10 is the perspective view for indicating for be inserted into stator the state before shell.
Figure 11 is the schematic section for indicating the example of coil wire of the invention.
Specific embodiment
The present invention relates to make in stator, rotating electric machine, the manufacturing method of stator, the manufacturing method of rotating electric machine and stator
Coil wire.Rotating electric machine applies to electric vehicle etc..
In the following, being cut for from the stator core of outer diameter 245mm, internal diameter 200mm, slot number 72, iron core stacking thickness 94mm
It is packed into what former-wound coil and slot insulating paper and being constituted with various resins bonded constituent material in slot on the iron core taken
The model that insulate carries out the measurement of partial discharge inception voltage, and using acquired results, embodiments of the present invention will be described.Afterwards
The Examples and Comparative Examples of text narration are the partial models of the stator of rotating electric machine, but as according to following the description it is specific that
Sample, the stator with rotating electric machine in kind is of equal value.
Fig. 1 illustrates the shape of the stator core cut for insulation model assembling use.
In this figure, iron core 1 is that the stator core of substantially cylindrical shape is cut into the sector that central angle is 5 ° to cut and obtain
It arrives, is made of rear of core 16 and tooth 17a, 17b.A slot 2 is provided between tooth 17a, 17b.
The shape of slot 2 is the fixed substantially rectangular shape of width, and width 4.2mm, parallel portion depth are 12.1mm.Iron core
1 uses the punching electromagnetic steel plate with 35A300 quite (JIS C 2552).The electromagnetic steel plate for constituting iron core 1 is mutually laminated, and
It is fixed together and the surface of the peripheral part to each electromagnetic steel plate is welded.
Fig. 2 is the perspective view for indicating assembled insulation model.In addition, Fig. 3 is to indicate cutting for assembled insulation model
Face figure.
As shown in these figures, insulation model has following constitute: and being stacked 4 copper conductors (coil wire)
It is formed former-wound coil 4 (sectional coil), the central portion of former-wound coil 4 is wrapped up using slot insulating paper 5, and insert them into iron core
In 1 slot.Former-wound coil 4 one by one is formed by enamel insulation flat wire.Furthermore former-wound coil 4 (sectional coil) can also be with
Referred to as wirning harness.
The length of former-wound coil 4 is set as 160mm.Former-wound coil 4 equably exposes 33mm from the both ends of slot.Enamel insulation
Flat wire is coated with the polyimide insulative layer of thickness 0.05mm on the surface of flat copper conductor (copper wire).Enamel insulation flat wire is cut
Face is having a size of short side 2.89mm, long side 3.42mm, corner chamfer radius 0.5mm.
As slot insulating paper 5, use aramid paper/PET/ aramid paper of thickness 0.18mm with poly- ammonia
3 laminated papers made of esters bonding agent bonding.The length of slot insulating paper 5 is set as 100mm, and slot insulating paper 5 is from the both ends of slot
It is each to expose 3mm.
With above-mentioned insulator die type for common condition, in embodiment, the following dilution of spraying on the surface of enamel insulation flat wire
The 1st resin layer is consequently formed in liquid.
Dilution is by mixing in 100 mass parts of phenol novolak type epoxy resin as polyfunctional epoxy resin
90 mass parts of acid anhydride type curing agent, 2 mass parts of imidazoles curing accelerator are closed, and resulting materials are dissolved with acetone and are made
At.
Therefore, the former-wound coil 4 of embodiment is to form the 1st resin layer on the surface of enamel insulation flat wire and obtain.Herein,
The cladding thickness of 1 resin layer is set as about 0.05mm.
Further, it forms the 2nd resin layer to bond the constituent material in slot completely and implements heat cure processing.
Fig. 4 is the sectional view for indicating a part of former-wound coil of embodiment.
In this figure, the state before implementing heat cure processing is illustrated.Copper conductor 11 is coated by polyimide insulative layer 12,
Its outside is further covered with the 1st resin layer 13.Also, it is covered around 2 adjacent copper conductors 11 by the 2nd resin layer 14.
In other words, the 2nd resin layer 14 is coated in the gap formed between 2 adjacent copper conductors 11.The setting of 2nd resin layer 14
In at least corner (corner portion) of 2 adjacent copper conductors 11.Although covering 13 phase of the 1st resin layer of 2 11 each side of copper conductor
Contact, but there is boundary.
Fig. 5 is the sectional view for indicating to implement a part of the former-wound coil of heat cure treated embodiment.
In this figure, the 1st resin layer 13 of Fig. 4 becomes the 1st curing resin layer 113, and the 2nd resin layer 14 becomes the 2nd solidification tree
Rouge layer 114.In Fig. 5, the melting of the 1st resin layer 13 between 2 copper conductors 11, heat cure and become one.Therefore, Fig. 4
Shown in boundary disappear.At least corner (corner portion) of 2 adjacent copper conductors 11 is arranged in 2nd curing resin layer 114.
By using said stator, can manufacture in the case where not increasing the thickness of slot insulating paper can bear high driving electricity
The rotating electric machine of pressure.
Then, the resin combination for being used to form the 2nd resin layer is illustrated.
Embodiment 1
In embodiment 1,80 mass parts of mixed acid anhydride curing agent and miaow in 100 mass parts of bisphenol A type epoxy resin
1 mass parts of azole curing accelerator, and prepared resin combination poured into the gap of the constituent material to slot, by
This forms the 2nd resin layer.Thereafter make its heat cure and the constituent material in slot is made to be bonded together.
Embodiment 2
In example 2, the mistake that 1 hour half life temperature is 125 DEG C is mixed in 100 mass parts of unsaturated polyester resin
Oxide-based 2 mass parts of curing agent, and prepared resin combination is poured into slot in the same manner as example 1
Constituent material gap in, the 2nd resin layer is consequently formed.Then, make its heat cure and be bonded in the constituent material in slot
Together.
(comparative example)
In a comparative example, it is set as composition shown in Fig. 2 and 3 in the state that 1 resin layer is not formed, and by embodiment
Resin combination used in 1 the 2nd resin layer pours into the gap of the constituent material to slot, and the 2nd resin layer is consequently formed.
Then make its heat cure and the insulation model for being equivalent to the prior art is made.
The condition of heat cure in Examples and Comparative Examples is set as 160 DEG C × 1 hour.It is handled by the heat cure, the 1st tree
Rouge layer and the 2nd resin layer are cured simultaneously.
Table 1 illustrates the composition of the insulation model in Examples and Comparative Examples.Herein, the resin of the 1st resin layer will be constituted
Material is known as the 1st resin, and the resin material for constituting the 2nd resin layer is known as the 2nd resin.
[table 1]
Table 1
Then, the heat ageing of the binder resin for the insulation model produced as Examples and Comparative Examples is said
It is bright.
For the purpose of the heat ageing of binder resin (resin cured matter), it was heat-treated, is gone forward side by side with 220 DEG C × 960 hours
The measurement of the partial discharge inception voltage of row heat ageing before and after the processing.
Table 2 illustrates the measurement result of partial discharge inception voltage.Numerical value in table indicates (3 between each adjacent coil electric wire
Group/insulation model) partial discharge inception voltage average value.Partial discharge inception voltage is that discharge charge amount reaches 100pC
Voltage, applied voltage frequency is set as 50Hz.
[table 2]
Table 2
According to table 2, Examples and Comparative Examples all show same partial discharge inception voltage before heat ageing.It is specific and
Speech is 1.89~2.02.
In embodiment 1, partial discharge inception voltage is 1.95 before heat ageing, becomes 1.97 after heat ageing.
In example 2, partial discharge inception voltage is 2.02 before heat ageing, becomes 1.85 after heat ageing.
In contrast, in a comparative example, partial discharge inception voltage is 1.89 before heat ageing, it is reduced to after heat ageing
0.72.
Therefore it learns, in embodiment 1 and 2, the reduction of partial discharge inception voltage will not occur after heat ageing, it can
To confirm effect of the invention.But in a comparative example, partial discharge inception voltage can be greatly reduced after heat ageing.
Herein, the state that the insulation model dismantling after heat ageing is observed to binder resin, as a result learns, sends out in comparative example
Resin crackle is given birth to.
Fig. 6 is the perspective view for schematically showing the state of the resin crackle in comparative example.
As shown in this figure, in the case where comparative example, copper conductor 11 is coated by polyimide insulative layer 12, adjacent 2
The 2nd curing resin layer 114 is formed in the gap formed between root copper conductor 11.2nd curing resin layer 114 has occurred biggish
Resin crackle 15.
Partial discharge inception voltage after heat ageing in comparative example and using by 2 enamel insulation flat wires of former-wound coil
Model (back-to-back model) setting-out line for being merely combined of plane between partial discharge inception voltage's substantially phase
Deng.Therefore it may be speculated that the resin crackle 15 occurred in a comparative example reaches the polyimide insulative layer 12 of former-wound coil
In the case of, it will form the gap that will abut against former-wound coil connection and become the state same with back-to-back model.
Therefore it is anticipated that in the case where heat ageing further develops and, 12 meeting of polyimide insulative layer of former-wound coil
Aging and reach insulation breakdown in advance.
Similarly, dismantling investigation is carried out to the insulation model of the embodiment 1 and 2 after heat ageing, as a result confirms following feelings
Shape: that is, as comparative example, crackle is had occurred in the 2nd resin layer, but its degree is smaller, attached with the interface of the 1st resin layer
Nearly crackle stops extension, so as to confirm using the high polyfunctional epoxy resin of the heat resistance as binder resin as the 1st tree
Rouge layer configures the effect in former-wound coil corner portion.
However, material used in the formation of the 2nd resin layer is different in embodiment 1 and 2.Therefore, as shown in table 2,
Although partial discharge inception voltage after heat ageing there is no difference, is possible to become different in form.
Therefore, the interface of the 1st curing resin layer to embodiment 1 and 2 and the 2nd curing resin layer has nearby carried out detailed tune
It looks into.As a result it learns, in embodiment 1, the mixing of two resins is formed between the 1st curing resin layer and the 2nd curing resin layer
Layer.
Fig. 7 illustrates the section comprising above-mentioned mixed layer.
As shown in this figure, in embodiment 1, it is formed between the 1st curing resin layer 113 and the 2nd curing resin layer 114
Mixed layer 116.Mixed layer 116 is that the ingredient of the 1st curing resin layer 113 and the ingredient of the 2nd curing resin layer 114 mix
Region.In the case of example 1, since the 1st resin and the 2nd resin are epoxy resin, it is easy mixing.Mixed layer
116 have ingredient similar in ingredient with the 1st curing resin layer 113 in the part contacted with the 1st curing resin layer 113, with
The part of 2nd curing resin layer 114 contact has ingredient similar in the ingredient with the 2nd curing resin layer 114.In other words, it mixes
Closing layer 116 has concentration gradient.Therefore, in mixed layer 116, physical property smoothly changes.2nd solidification tree as a result,
The extension of crackle in rouge layer 114 is further inhibited, it is believed that the partial discharge inception voltage after heat ageing maintains than real
It is high to apply example 2.
It in embodiment, is to use the phenol novolak type epoxy resin of trifunctional as the 1st resin, but it also can be with list
Matter or mixed form use cresol novolak type epoxy resin, glycidyl amine epoxy resin, glycidol ethers ring
The polyfunctional epoxy resins such as oxygen resin.Further, it is also possible to use the bifunctional epoxy resins such as bisphenol A-type and above-mentioned multi-functional epoxy
The resin combination that resin mixes.
The present invention be use acid anhydride type curing agent as the curing agent of the 1st resin, but can be used amine, it is polyamide-based,
Dicyandiamide etc. is typically used as the curing agent of epoxy curing agent, it is important that selecting can be high to cured epoxy resin imparting resistance to
Hot curing agent.
In addition, being separately to coat the 1st resin on enamel insulation flat wire to make insulation model in embodiment.But
In the case where making stator in kind through the invention, the 1st resin is coated to coil by method identical with embodiment and is existed
The worthwhile not upper good method of manufacturing cost.Therefore, next using the enamel insulation flat wire to form the resin of the 1st resin layer is pre-coated with
The method for forming stator coil is more satisfactory as the manufacturing method of stator.
Fig. 8 is the flow chart for indicating the example of manufacturing method of stator in kind.
As shown in this figure, so that sectional coil used in stator (coil wire) is formed (S101), the 1st resin will be included
1st adhesive varnish is applied to sectional coil (1 1 coil wire) (S102).Then, slot insulating paper is inserted into slot, and
The spatial interpolation on the inside of slot insulating paper in slot enters sectional coil (coil wire) (S103).Thereafter, the curved of sectional coil is carried out
Folding processing (S104), and (S105) is welded to sectional coil.Thereafter, it will apply or soak comprising the 2nd adhesive varnish of the 2nd resin
It seeps to sectional coil (S106), and carries out heat cure processing (S107).
In the following, being illustrated to the example of rotating electric machine and stator.
Fig. 9 is the sectional view for indicating the rotating electric machine equipped with stator of the invention.
In this figure, rotating electric machine 200 has rotor 210, stator 220 and shell 251.
Stator 220 is fixed on the inner circumferential side of shell 251.Rotor 210 can be rotatably set in the inner circumferential side of stator 220.Outside
Shell 251 be configured to by the casting or punch process of the cutting of the ferrous materials such as carbon steel, cast steel or aluminium alloy it is cylindric and
, constitute the outer cover of motor.Shell 251 is also referred to as framework or frame.
Liquid-cooled jacket 230 is fixed in the peripheral side of shell 251.In the internal perisporium of liquid-cooled jacket 230 and the periphery wall of shell 251
Between be provided with the coolant channel 253 of the liquid refrigerants such as oil RF.The coolant channel 253 is formed in a manner of without leakage.
Liquid-cooled jacket 230 is accommodated with bearing 244,245, also referred to as bearing bracket stand.
About refrigerant RF, the liquid accumulated in the storage space 250 of refrigerant (oil) passes through coolant channel 253 from system
Cryogen outlet 254,255 is flowed out to stator 220, is cooled down to stator 220.
Stator 220 includes stator core 232.Stator core 232 is that the thin plate of silicon steel plate is laminated.Stator core 232
On be provided with stator coil (symbol 260 in Figure 10 described later).Stator coil winding is in being arranged in stator core 232
In multiple slots of inner peripheral portion.Fever from stator coil transfers heat to liquid-cooled jacket 230 via stator core 232, by liquid-cooled jacket
The refrigerant RF to circulate in 230 is radiated.
Rotor 210 is made of rotor core 212 and shaft 213.There is the thin plate of silicon steel plate to be laminated for rotor core 212
Composition.Shaft 213 is fixed on the center of rotor core 212.Shaft 213 is revolved by the bearing 244,245 for being installed on liquid-cooled jacket 230
Turn to be supported freely, be rotated on the specified position in stator 220.In addition, rotor 210 has permanent magnet 218.Rotor
210 are rotated by the magnetic action for the stator 220 for generating rotating excitation field.
Neutral point wiring conductor 240 is led to from the end turn 261 in stator coil.End turn 262 is welded
It connects.
Furthermore liquid-cooled jacket 230 is made of the housing of engine or the housing of speed changer etc..
Rotating electric machine 200 is permanent magnet internally-arranged type three-phase synchronous motor.Rotating electric machine 200 passes through in stator core 232
The stator coil of winding supplies three-phase alternating current and works as the motor for rotating rotor 210.In addition, when rotation
When motor 200 is driven by the engine, the generation power of three-phase alternating current is worked and exported as generator.That is, rotation
Rotating motor 200 has the function of following two, i.e., as the function for the motor for generating torque according to electric energy and as according to machine
Tool can be come the function of the generator to generate electricity, can be according to the driving status of automobile optionally by above-mentioned function.
Figure 10 is the perspective view for indicating for be inserted into stator the state before shell.
In this figure, the shell 251 and stator 220 of rotating electric machine are illustrated.
Shell 251 is that the steel plate (high-tensile steel etc.) of 2~5mm of thickness or so is formed as cylinder-shaped by drawing process
Shape.Multiple flanges 315 for fixing liquid-cooled jacket are provided on shell 251.Multiple flanges 315 are arranged in towards radial outside
The peripheral part of one end face of cylindric shell 251.
Stator 220 has stator coil 260 and installs the cylindric stator core 232 of the stator coil 260.
Stator core 232 is that the thin plate (0.05~1.0mm of thickness or so) of silicon steel plate (electromagnetic steel plate) is laminated.In circle
The peripheral part of the stator core 232 of tubular is provided with weld part 270 in the mode parallel with the axial direction of stator core 232.Welding
Portion 270 is formed in the welding groove for the semicircle shape of peripheral part for being set in advance in stator core 232, and therefore, weld part 270 will not
Project to the radial outside of stator core 232.Weld part 270 is formed by TIG weld, laser welding etc..
Stator core 232 has rear of core 342 and tooth 395.
It is that the coil of 6 systems (U1, U2, V1, V2, W1, W2) is snugly mounted to determine on the whole about stator coil 260
On sub- iron core 232.Also, the coil of 6 systems of composition stator coil 260 is by slot mutually to be appropriately alternatively arranged.
The input that an end turn 340 in stator coil 260 leads to the respective stator coil 260 of UVW three-phase is defeated
Coil-conductor, that is, ac terminal 391 (U), 392 (V), 393 (W) and neutral point wiring conductor 240 out.
Furthermore in order to improve the workability of the assembling of rotating electric machine, ac terminal 391 (U), 392 (V), 393 (W) configuration
The axially external of stator core 232 is projected at from end turn 340.Then, by via the ac terminal 391 (U), 392
(V), 393 (W) and be connected to power inverter (not shown), AC power is able to supply to stator 220.
Stator coil 260 is set as the structure that the periphery of conductor is covered by insulating coating, maintains electrical insulating property.If utilizing insulation
Overlay film maintains insulation pressure resistance plus insulating paper 380, then can be further improved reliability.
Even if insulating coating is impaired or aging, insulating paper 380 also contribute to keeping necessary insulation pressure resistance.
As shown in Figure 10, stator core 232 is fitted and fixed with by shrink fit to 251 inside of shell.As specific
Assemble method, for example, nesting is heated in advance and expanded by thermal expansion the shell of internal diameter first in stator core 232
251.Then, it carries out cooling to shell 251 and shrinks internal diameter, pass through the thermal contraction as a result, for the peripheral part of stator core 232
Banding.
In the following, being illustrated to the coil wire of the part as stator.
Figure 11 is the schematic section for indicating the example of coil wire of the invention.
As shown in this figure, coil wire is that polyimide insulative layer 12 is arranged on the surface of the copper conductor 11 of substantially rectangular shape
And it applies the 1st resin layer 13 on the outside and obtains.The corner of copper conductor 11 usually has curvature.
Coil wire shown in this figure is made, packet in insulating paper and is inserted into stator iron before implementing heat cure processing
The slot of the heart pours into the 2nd resin in the gap in slot, implements heat cure processing thereafter, glues the constituent material in slot mutually
It closes.Coil wire is the part of this purpose.In other words, coil wire is applied not yet on the surface of enamel insulation flat wire
Cured 1st resin (resin combination) and obtain.
Prepare such coil wire shown in this figure in advance and be cut into required length come be subject to using, thus, it is possible to
Outside carries out a part of the process in the production of stator and the process for applying the 1st resin before will be assembled by being omitted in.
Symbol description
1 ... iron core, 2 ... slots, 4 ... former-wound coils, 5 ... slot insulating papers, 11 ... copper conductors, 12 ... polyimide insulative layers,
13 ... the 1st resin layers, 14 ... the 2nd resin layers, 15 ... resin crackles, 113 ... the 1st curing resin layers, 114 ... the 2nd solidified resins
Layer, 116 ... mixed layers, 200 ... rotating electric machines, 210 ... rotors, 220 ... stators.
Claims (11)
1. a kind of stator, which is characterized in that have:
Iron core, with rear of core and tooth；And
Electric wire, it includes the 1st resin of the outer surface of the conductor coated by insulating layer and the cladding insulating layer,
At least corner of the adjacent electric wire in the outer surface of the sectional coil as the wirning harness is provided with the 2nd
Resin.
2. stator according to claim 1, which is characterized in that
1st resin is polyfunctional epoxy resin,
2nd resin is bifunctional epoxy resin.
3. stator according to claim 1, which is characterized in that
1st resin is polyfunctional epoxy resin,
2nd resin is unsaturated polyester resin.
4. stator according to any one of claim 1 to 3, which is characterized in that
The mixed layer comprising the 1st resin and the 2nd resin is formed between the 1st resin and the 2nd resin.
5. stator according to any one of claim 1 to 4, which is characterized in that
The cross sectional shape of the conductor is substantially rectangular shape.
6. a kind of rotating electric machine, which is characterized in that have:
Stator described in any one of claims 1 to 5；And rotor.
7. a kind of manufacturing method of stator is the method for stator described in any one of manufacturing claims 1 to 5, the stator
Manufacturing method be characterized in that, include following process:
The electric wire is inserted into the slot being formed between the tooth；And
In at least described corner of the adjacent electric wire, the 2nd resin is set.
8. a kind of manufacturing method of rotating electric machine, rotating electric machine described in manufacturing claims 6, the manufacturer of the rotating electric machine
Method is characterized in that, includes following process:
It is formed by slot between the tooth of the iron core for constituting the stator and is inserted into the electric wire；And
In at least described corner of the adjacent electric wire, the 2nd resin is set.
9. a kind of coil wire, is used for stator, which is characterized in that, includes:
Conductor is coated by insulating layer；And
1st resin coats the outer surface of the insulating layer.
10. coil wire according to claim 9, which is characterized in that
The cross sectional shape of the conductor is substantially rectangular shape.
11. coil wire according to claim 9 or 10, which is characterized in that
1st resin is polyfunctional epoxy resin.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-038069 | 2017-03-01 | ||
| JP2017038069A JP6906329B2 (en) | 2017-03-01 | 2017-03-01 | Manufacture method of stator, rotary electric machine, stator, and manufacturing method of rotary electric machine |
| PCT/JP2018/002633 WO2018159182A1 (en) | 2017-03-01 | 2018-01-29 | Stator, rotating electric machine, stator manufacturing method, rotating electric machine manufacturing method, and coil electric wire used for stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110383640A true CN110383640A (en) | 2019-10-25 |
Family
ID=63371233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880010877.5A Pending CN110383640A (en) | 2017-03-01 | 2018-01-29 | Coil wire used in stator, rotating electric machine, the manufacturing method of stator, the manufacturing method of rotating electric machine and stator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6906329B2 (en) |
| CN (1) | CN110383640A (en) |
| WO (1) | WO2018159182A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6906329B2 (en) | 2021-07-21 |
| WO2018159182A1 (en) | 2018-09-07 |
| JP2018148600A (en) | 2018-09-20 |
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Address after: Ibaraki Applicant after: Hitachi astemo Co.,Ltd. Address before: Ibaraki Applicant before: HITACHI AUTOMOTIVE SYSTEMS, Ltd. |
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Application publication date: 20191025 |