WO2016088270A1

WO2016088270A1 - Rotating electric machine and method for manufacturing assembled conductor and assembled conductor segment coil used in same

Info

Publication number: WO2016088270A1
Application number: PCT/JP2014/082326
Authority: WO
Inventors: 田中　雄一郎; 孝石上
Original assignee: 株式会社日立製作所
Priority date: 2014-12-05
Filing date: 2014-12-05
Publication date: 2016-06-09

Abstract

Provided is a rotating electric machine stator in which the circumferential length difference between conducting wires occurring when an assembled conductor is bent in a laminated direction is improved regardless of a bending point and a bending angle to improve the characteristics. An assembled conductor segment coil is obtained in such a way that: an insulating layer is formed on the outer circumferential surfaces of a plurality of conducting wires; a bonding layer is formed so as to cover the insulating layer; and an assembled conductor obtained by firmly fixing the conducting wires to each other through the bonding layer is bent in a laminated direction and shaped. A stator is configured using the assembled conductor segment coil structured so that the conducting wires are separated from each other and deformed, by not firmly fixing the portion corresponding to a bending portion of the segment coil.

Description

Rotating electrical machine, assembly conductor used therefor, and method of manufacturing assembly conductor segment coil

The present invention relates to a rotating electrical machine in which a stator is formed using an aggregate conductor segment coil, an aggregate conductor for the aggregate conductor segment coil, and a method of manufacturing the aggregate conductor segment coil.

As a method of configuring a stator of a rotating electrical machine, there is a method in which a segment coil bent in a substantially U shape is inserted into a stator core and end portions of the segment coil are connected. As a segment coil, it is known to suppress eddy current loss by dividing a conductor constituting the coil into a plurality of conductor strands and insulating the conductor strands with an insulating layer. Moreover, when a difference in impedance occurs between a plurality of conductor strands constituting the assembly conductor, a circulating current may be generated between the plurality of strands.

[Patent Document 1] is a background art that takes into account the generation of eddy current loss and circulating current. In this publication, “when a collective conductor composed of a plurality of conductor strands is bent and used as a conductor segment, the restriction on the position of a dislocation portion twisting the plurality of conductor strands is relaxed. The segment 20 is a substantially U-shaped conductor composed of an aggregate conductor having four

conductor strands

32, 34, 36, and 38 arranged in the θ direction. In order to cancel out the difference in impedance between both ends of the

conductor strands

32, 34, 36, 38, a dislocation portion 50 that twists by changing the order of parallel arrangement of the

conductor strands

32, 34, 36, 38 is provided. The dislocation portions 50 are provided in a distributed manner at four positions a, b, c, and d along the extending direction of the crossing portion 26. At these four positions a, b, c, and d, conductors are provided. The

strands

32, 34, 36, and 38 change the order of the parallel arrangement sequentially. To. "Is described as (see Abstract).

JP 2013-183567 A

In the segment coil of Patent Document 1, the circumferential length difference between the conductor strands that occurs when the assembly conductor is twisted is improved at the transition portion, and the characteristics are improved (impedance difference between both ends of each conductor strand). By canceling, the circulating current generated between the conductor wires is suppressed), but it is not applicable to all bent portions.

The present invention provides a stator for a rotating electrical machine that improves the characteristics by improving the circumferential length difference between conductor wires generated when the assembly conductor is bent in the laminating direction, regardless of the location and angle of bending. The purpose is to do.

In order to solve the above problems, for example, the configuration described in the claims is adopted. Although the present application includes a plurality of means for solving the above-described problems, if an example of the rotating electrical machine of the present invention is given, an insulating layer is formed on the outer peripheral surface of the plurality of conductor strands and bonded so as to cover the insulating layer. Forming an assembly conductor segment coil formed by bending the assembly conductors fixed to each other via the adhesive layer in the laminating direction, the portions corresponding to the bent portions of the segment coils being non-adhered, The stator is configured by using a collective conductor segment coil configured such that conductor strands are separated from each other and deformed.

If an example of the manufacturing method of the assembly conductor for the assembly conductor segment coils of this invention is given, from the conductor strand which formed the insulating layer and the contact bonding layer in the outer peripheral surface, the said insulation layer and the said contact bonding layer will be predetermined in the longitudinal direction. A step of removing a predetermined length at intervals, a step of stacking a plurality of the conductor wires so that a portion from which the insulating layer and the adhesive layer have been removed overlap, and forming the aggregate conductor laterally The assembly conductor includes a step of fixing the assembly conductor via the adhesive layer by pressing and heating, and a step of cutting the assembly conductor at a portion where the insulating layer and the adhesive layer are removed.

Moreover, if an example of the manufacturing method of the assembly conductor segment coil used for the stator of the rotary electric machine of the present invention is given, an insulating layer is formed on the outer peripheral surface of a plurality of conductor strands, and an adhesive layer is formed so as to cover the insulating layer. In the assembly conductor formed and fixed to each other through the adhesive layer, the portions corresponding to the bending portions of the coil are made non-fixed so that the conductor wires are separated from each other and deformed, and the assembly The conductor is bent in the stacking direction at the bent portion.

According to the present invention, in the stator of the rotating electrical machine using the collective conductor segment coil, the circumferential length difference between the conductor wires generated when the collective conductor is bent in the laminating direction, regardless of the bending location and the bending angle, It is possible to improve and improve the characteristics.

It is the schematic of the conventional rotary electric machine. It is the schematic of the conductor segment coil which comprises the stator of the conventional rotary electric machine. It is the schematic explaining the structure of the stator of the conventional rotary electric machine. It is the schematic explaining the collective conductor segment coil which comprises the stator of the rotary electric machine of Example 1 of this invention. It is the schematic explaining the circumference difference between the conductor strands which generate | occur | produce when an assembly conductor is bent 90 degrees in the lamination direction. It is the schematic explaining the 90 degree bending part of the collective conductor segment coil of Example 1 of this invention. It is the schematic which looked at the stator using the conventional conductor segment coil from the front. It is the schematic which looked at the stator using the collective conductor segment coil of Example 1 of this invention from the front. It is the schematic explaining the 180 degrees bending part of the collective conductor segment coil of Example 1 of this invention. It is the schematic explaining the 90 degree bending part of the assembly conductor segment coil of Example 2 of this invention. It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 2 of this invention. It is the schematic explaining the 90 degree bending part of the collective conductor segment coil of Example 3 of this invention. It is the schematic which looked at the 90 degree bending part of the collective conductor segment coil of Example 3 of this invention from the side surface. It is the schematic explaining the manufacturing method of the assembly conductor segment coil of Example 4 of this invention. It is the schematic explaining the manufacturing method of the assembly conductor segment coil of Example 4 of this invention. It is the schematic which looked at the stator using the collective conductor segment coil of Example 3 of this invention from the front. It is the schematic of the stator coil of the prior art and Example 3 of this invention. It is the schematic explaining the structure of the collective conductor of Example 5 of this invention. It is the schematic explaining the manufacturing method of the assembly conductor of Example 5 of this invention. It is the schematic explaining the collective conductor segment coil of Example 6 of this invention. It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 6 of this invention. It is the schematic explaining the assembly conductor segment coil of Example 7 of this invention. It is the schematic explaining the assembly conductor segment coil before the bending shaping | molding of Example 7 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that components having the same function are denoted by the same names and reference numerals in the drawings for describing the embodiments, and repetitive description thereof is omitted.

In this example, in the stator of a rotating electrical machine using an assembly conductor segment coil, the circumferential length difference between the conductor wires generated when the assembly conductor is bent in the laminating direction is improved regardless of the bending location and the bending angle. And the characteristics are improved.

FIG. 1 is a schematic view of a conventional rotating electrical machine. In the conventional rotating electric machine 200, for example, a U-shaped conductor segment coil made of a copper rectangular wire conductor (rectangular conductor) coated with an enamel or the like on an annular core 2 formed by laminating silicon steel plates. 1 is inserted into the core 2 to form the stator coil 10. Further, in the stator coil 10, lead wires 5 are arranged for three phases of U phase, V phase, and W phase, and the stator 100 is configured as an electric circuit. Further, the outer periphery of the conventional stator 100 is fixed to the housing 3, and although not shown, a rotor in which a plurality of magnets are alternately arranged in the circumferential direction with N poles and S poles in the center of the rotating electrical machine 200. The stator 100 and the stator 100 are rotatably supported through a certain gap (gap).

FIG. 2 is a schematic view of a conductor segment coil 1 constituting the conventional stator 100. 2A, 2B, and 2C are a perspective view, a side view, and a front view of the conductor segment coil 1, respectively. The conductor segment coil 1 is formed by forming a copper rectangular wire conductor (rectangular conductor), which is insulation-coated with enamel or the like, into a U-shape. Hereinafter, the folding of the U character will be described as a transition part. Further, the two

terminal portions

11 and 12 of the conductor segment coil 1 have a structure in which all four insulating layers have been removed in advance in order to connect to other adjacent conductor segment coils.

FIG. 3 is a schematic diagram illustrating a conventional stator structure. FIG. 3A shows the conductor segment coil 1 as viewed from the side. As shown in FIG. 3 (b), the end portion 15 of the conductor segment coil 1 is inserted into the slot portion of the core 2, the end portion 15 is molded again, and connected to another adjacent conductor segment coil, An electrical circuit is formed. The connection is performed by TIG welding or the like, and the connection portion 4 has a structure concentrated on one side of the stator. Here, as an example, as shown in FIG. 3C, a structure in which four conductor segment coils 1 are inserted into the slots of the core 2 is illustrated.

FIG. 4 is a schematic diagram for explaining the collective conductor segment coil of the present embodiment. 4A, 4B, and 4C are a perspective view, a side view, and a front view of the collective conductor segment coil 30, respectively. As an example, the collective conductor segment coil is formed by stacking three layers of thin and flat copper rectangular wire conductors (rectangular conductors) that are insulated and coated with enamel or the like. Although the method for manufacturing the collective conductor will be described later, an adhesive layer is formed on the outermost surface of the rectangular conductor, and three layers of conductors are fixed by this adhesive layer. For this reason, even if the collective conductor is formed into a U-shape, the

conductor wires

21, 22, and 23 are not separated and can be inserted into the core. Further, in order to connect the two

terminal portions

24, 25, 26, 27, 28, and 29 of the collective conductor segment coil 30 to other adjacent conductor segment coils, an insulating layer is provided in advance for each conductor strand. Both surfaces are removed. A method for peeling the insulating layer will be described later. FIG. 4 is an image diagram of the collective conductor segment coil 30 of this embodiment. Actually, when the collective conductor is bent in the stacking direction, specifically, there is a difference in circumference between the conductor strands in the crossing portion of FIG. appear. Next, a mechanism for generating this circumference difference will be described.

FIG. 5 is a schematic diagram for explaining the circumferential length difference between the conductor wires that occurs when the assembly conductor is bent 90 ° in the stacking direction. When a three-layer assembly conductor composed of the

conductor wires

31, 32, 33 is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the outer conductor is bent with respect to the conductor wire 31 on the inner side of the bend. Assuming that the

conductor strands

32 and 33 are thinned and thinned, it can be seen that the

circumferential lengths

34, 35 and 36 corresponding to 90 ° of the conductor strands become longer in that order. For this reason, when the end portions of the collective conductor segment coil 30 are connected to form an electric circuit, the circumferential length of each conductor strand is different, so that a difference in impedance occurs between the plurality of conductor strands. Circulating current may occur. In the present embodiment, the extension / thinning of the

conductor wires

32 and 33 outside the bend is reduced, and the difference in circumference is improved.

FIG. 6 is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment. In the three-layer aggregated conductor composed of the

conductor wires

41, 42, and 43, portions (thick line portions) 44, 45, 46, and 47 are fixed by an adhesive layer on the surface of the conductor wires. The fixing method will be described later. When the three-layer aggregate conductor is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the

conductor wires

41 and 42 on the inner side of the bending are made non-fixed by making the portion corresponding to the bending portion non-fixed. Can be bent. At this time, a gap generated at the bent portion between the conductor wire 41 inside the bend and the conductor wire 42 outside the bend is t ′, and at the bend portion between the conductor wire 42 inside the bend and the conductor wire 43 outside the bend. When the gap is t, the relationship t ′> t is established. By bending the inner conductor wire in the bending direction in this way, the elongation / thinning of the

outer conductor wires

42 and 43 on the outer bending side can be reduced, and the circumference difference can be improved.

7A and 7B are schematic views of a stator using a conductor segment coil as viewed from the front. FIG. 7A shows a schematic diagram of a stator using a conventional conductor segment coil 1, and FIG. 7B shows a schematic diagram of a stator using a collective conductor segment coil 30 'of this embodiment. As shown in FIG. 7B, by bending the conductor wire inward at the transition portion of the collective conductor segment coil 30 ′ of the present embodiment, the extension / thinning of the conductor wire outside the bend is reduced, and the circumferential length It is possible to construct a stator coil that improves the difference and does not interfere with each other.

FIG. 8 is a schematic diagram for explaining a 180 ° bent portion of the collective conductor segment coil of the present embodiment. In the three-layer aggregated conductor composed of the

conductor wires

51, 52, and 53, portions (thick line portions) 54, 55, 56, and 57 are fixed by an adhesive layer on the surface of the conductor wires. When the three-layer aggregated conductor is bent by rotating the bending pin 38 by 180 ° with the fixing pin 37 as a fulcrum, the portions corresponding to the bent portions are not fixed, so that the

conductor wires

51 and 52 on the inner side of the bending are formed. Can be bent symmetrically about the fixing pin 37. At this time, a gap generated at the bent portion between the bent inner conductor wire 51 and the bent outer conductor wire 52 is t ′, and a bent portion between the bent inner conductor wire 52 and the bent outer conductor wire 53 is generated. When the gap is t, the relationship t ′> t is established. Even when the bending angle is increased in this way, by bending the inner conductor wire inside the bend, the elongation / thinning of the

outer conductor wires

52 and 53 on the outer bend is reduced, and the circumferential length difference is improved. can do.

As is clear from the drawing, the conductor wire described above is shown as a quadrilateral cross-sectional shape, but the present invention is not limited to this. For example, the cross-sectional shape may be a circle, an ellipse, a triangle, a hexagon, or the like. Can be appropriately changed. The rotating electric machine 200 is an example of a radial gap type rotating electric machine. Of course, the number of poles, the number of core slots, and the number of conductor strands of the rotating electric machine can be changed as appropriate. The rotating electrical machine can be changed as appropriate.

In the present embodiment, the structure of the collective conductor segment coil constituting the stator of another rotating electrical machine will be described.

FIG. 9A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of this embodiment, and FIG. 9B is a schematic diagram showing the collective conductor segment coil before bending. As shown in FIG. 9B, the three-layer aggregated conductor composed of the

conductor wires

61, 62, and 63 has

portions

64, 65, 66, and 67 (thick line portions) fixed by the adhesive layer on the surface of the conductor wires. Yes. As a feature of the present embodiment, the length of the non-fixed portion is different, and the length L2 of the non-fixed portion inside the bend is longer than the length L1 of the non-fixed portion outside the bend. When this three-layer assembly conductor is formed by bending the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the portion corresponding to the bending portion is made non-fixed so that the

conductor wires

61, 62 can be bent. At this time, the gap generated at the bending portion between the inner conductor wire 61 and the outer conductor wire 62 is t ′, and the bending portion between the inner conductor wire 62 and the outer conductor wire 63 is bent. When the gap is t, it is preferable to satisfy the relationship of t ′ <t. The relationship of t ′ <t is established because the length of the non-fixed portion is different from L1 and L2, so that the bending amount of the conductor wire 61 inside the bend is smaller than the bending amount of the conductor wire 62. It is because it became. For this reason, the bending and thinning of the

conductor wires

62 and 63 on the outer side of the bend can be reduced, and the deflection of the conductor wire 61 on the inner side of the bend can be suppressed while improving the circumferential length difference.

In the present embodiment, the structure of the collective conductor segment coil constituting the stator of another rotating electrical machine will be described. FIG. 10A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment, and FIG. 10B is a schematic diagram showing a state as viewed from the side. In the three-layer collective conductor composed of the

conductor strands

71, 72, and 73, portions (thick line portions) 74, 75, 76, and 77 are fixed by an adhesive layer on the surface of the conductor strand. When the three-layer aggregate conductor is bent by rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, the portion corresponding to the bending portion is made non-fixed, as shown in FIG. The

conductor strands

71 and 72 can be shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference. In this way, without bending the inner conductor wire inside the bend, the extension / thinning of the

outer conductor wires

72 and 73 on the outer bend can be reduced, and the circumferential length difference can be improved. Here, a manufacturing method in which the

conductor wires

71 and 72 on the inner side of the bend are shifted laterally by a length (maximum dimension w) corresponding to the circumferential length difference will be described.

In the present embodiment, a method for manufacturing a collective conductor segment coil will be described. FIG. 11A is a schematic diagram for explaining a 90 ° bent portion of the collective conductor segment coil of the present embodiment, and FIG. 11B is a schematic diagram showing the state as viewed from the side. The difference between FIG. 10 and FIG. 11 will be described. The

conductors

71 and 72 on the inner side of the bend are wound by pushing the wedge 78 by w while rotating the bending pin 38 by 90 ° with the fixing pin 37 as a fulcrum, and bending the wedge 78. It is possible to shift to the side by a length corresponding to the length difference (maximum dimension w).

FIG. 12A is a schematic view of a stator using the collective conductor segment coil 30 ″ of this embodiment as viewed from the front. 12A is a schematic view of a conventional stator coil, and FIG. 12B is a schematic view of a stator coil according to this embodiment.

As shown in (b) of FIG. 12B, the

conductor wires

81 and 82 on the inner side of the bend are only the length corresponding to the circumferential length difference (maximum dimension h) at the transition part of the collective conductor segment coil 30 ″ of this embodiment. By shifting in the axial direction, the extension / thinning of the conductor wire outside the bend is reduced, the circumferential length difference is improved, and the stator coil can be configured without interfering with each other. .

In the present embodiment, the structure of the assembly conductor and the manufacturing method thereof will be described.

FIG. 13A is a schematic diagram showing the structure of the collective conductor 110 of this example. The collective conductor 110 will be described as an example in which three layers of rectangular conductors are stacked. A thin and flat copper rectangular wire conductor (rectangular conductor) 111 has an insulating layer 112 covered with enamel or the like formed on its surface, and an adhesive layer 113 is formed on the insulating layer. For the adhesive layer, a thermoplastic resin, a thermosetting resin, or the like can be used. A film 114 is a combination of the insulating layer 112 and the adhesive layer 113. A conductor wire 115 is a combination of the conductor 111 and the film 114. When three layers of conductor strands 115 are laminated, a structure in which the adhesive layers 113 on the outermost surface of the strands are fixed to each other can be considered. As shown in FIG. 13A, the fixing portions are portions indicated by 116 and 117. Moreover, when forming a collective conductor and producing a segment coil, for example, it is finally necessary to connect coil terminals to form an electric circuit. For this reason, the film 114 corresponding to the coil terminal portion is desired to be peeled off in advance. Here, this film peeling portion is A2, and a portion corresponding to the coil circumference is A1.

FIG. 13B is a schematic view showing a method for manufacturing the collective conductor 110 of this embodiment. By providing three bobbins 120 around which the conductor strands 115 are wound and also having three coating stripping apparatuses (mold stripping, laser, etc.) 121, the coating stripping portion A2 can be formed in-line for each conductor strand. It becomes possible. After forming the film peeling portion A2, control is performed so that the film peeling portions A2 of the three conductor strands 115 coincide. The coincidence of the film peeling portions A2 means that the portion A1 corresponding to the coil circumferential length also coincides, so that the fixing device (hot air machine, drying furnace) is pressed in a state where the assembly conductor 110 is pressed from the side by a roller or the like. Etc.) 124, the adhesive layers 113 are fixed to each other, and the aggregate conductor 110 is formed.

Reference numerals

122, 123, and 125 denote guide rollers, and reference numeral 126 denotes a winding bobbin.

In this embodiment, the structure of the collective conductor segment coil will be described by taking the collective conductor segment coil 30 ″ constituting the stator of the rotating electrical machine of the third embodiment as an example. FIG. 14A is a schematic diagram for explaining the collective conductor segment coil 30 ″ of this embodiment, and FIG. 14B is a schematic diagram showing the collective conductor before bending. As shown in FIG. 14B, the stripped portions A2 and the portions A1 corresponding to the coil circumferential length are alternately formed in the aggregated conductor before molding. For this reason, a segment coil can be shape | molded using the collective conductor cut | disconnected in the center of film peeling part A2. Here, as a feature of the three-layer collective conductor composed of the

conductor strands

81, 82, and 83, the thick line portion B1 is fixed by the adhesive layer on the surface of the conductor strand. B2 represents a non-fixed portion. As a method of partially forming the fixed part and the non-fixed part in this way, a hot air blower is suitable. This shape could be realized by optimizing the nozzle shape of the hot air blower. In addition to the nozzle shape, this shape can also be realized by temporarily inserting a shielding object into a portion corresponding to the non-fixed portion. In the manufacturing apparatus shown in FIG. 13B, the fixing device 124 made of, for example, a hot air blower is controlled so that the hot air is temporarily supplied when a portion corresponding to the bending portion of the coil of the collective conductor 110 passes through the hot air blower. Just stop.

In the present embodiment, the structure of another collective conductor segment coil will be described using the collective conductor segment coil 30 '' of the third embodiment as an example. FIG. 15A is a schematic diagram for explaining the collective conductor segment coil 30 ″ of this embodiment, and FIG. 15B is a schematic diagram showing the collective conductor before bending. As shown in FIG. 15B, the thick line portion C1 is fixed in a spot shape by the adhesive layer on the surface of the conductor element wire as a feature of the three-layer aggregated conductor composed of the

conductor element wires

91, 92, and 93. C2 represents a non-fixed portion. As described above, a hot air blower is suitable as a method of partially forming the fixed portion and the non-fixed portion in the thick line portion C1. As is clear from this figure, the fixing portions are matched in the vertical direction, but the present invention is not limited to this, and the fixing length can be appropriately changed in the vertical direction, or the fixing portions can be arranged in a staggered manner. Is possible. By arranging the fixing portions in a spot shape in this way, it becomes possible to shorten the cycle time for manufacturing the collective conductor.

DESCRIPTION OF SYMBOLS 1 Conductor segment coil 2 Core 3 Housing 4 Connection part 5 Lead wire 10

Stator coil

11,12 Terminal part 15

End part

21,22,23 Conductor strand 30 Aggregate

conductor segment coil

31,32,33 Conductor strand 37 Fixing pin 38 Bending pins 41, 42, 43

Conductor wires

44, 45, 46, 47 Adhering

portions

71, 72, 73 Conductor wires 78 Wedge 100 Stator 110 Collective conductor 111 Conductor 112 Insulating layer 113 Adhesive layer 114 Film 115

Conductor strand

116, 117 Adhering portion 120 Bobbin 121 Film peeling device 124 Adhering device 126 Winding bobbin 200 Rotating electric machine

Claims

An aggregated conductor segment coil in which an insulating layer is formed on the outer peripheral surface of a plurality of conductor wires, an adhesive layer is formed so as to cover the insulating layer, and an aggregated conductor fixed to each other via the adhesive layer is bent in the stacking direction A rotating electrical machine in which a stator is configured by using a collective conductor segment coil configured such that each conductor wire is separated and deformed by unfixing a portion corresponding to a bent portion of the segment coil.
In the rotating electrical machine according to claim 1,
A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which a length of a non-fixed portion inside a bend of a portion corresponding to a bent portion of the segment coil is made longer than a length of a non-fixed portion outside the bend.
In the rotating electrical machine according to claim 1,
A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which each conductor wire is shifted in a direction perpendicular to the stacking direction at a portion corresponding to a bent portion of the segment coil.
In the rotating electrical machine according to claim 1,
A rotating electrical machine in which a stator is configured by using a collective conductor segment coil in which fixing portions fixed to each other through the adhesive layer are arranged in a spot shape.
Removing a predetermined length of the insulating layer and the adhesive layer at predetermined intervals in the longitudinal direction from a conductor wire in which an insulating layer and an adhesive layer are formed on the outer peripheral surface;
A step of laminating a plurality of the conductor strands so as to overlap a portion where the insulating layer and the adhesive layer are removed, and forming an aggregate conductor;
Fixing the collective conductor via the adhesive layer by pressing and heating the collective conductor from the side; and
And a step of cutting the aggregated conductor at a portion where the insulating layer and the adhesive layer are removed. A method for producing an aggregated conductor for an aggregated conductor segment coil.
In the manufacturing method of the assembly conductor for assembly conductor segment coils according to claim 5,
The method of manufacturing an assembly conductor for an assembly conductor segment coil, wherein the step of fixing the assembly conductor through the adhesive layer includes unfixing a portion corresponding to a bent portion of the coil.
An insulating layer is formed on the outer peripheral surface of a plurality of conductor wires, an adhesive layer is formed so as to cover the insulating layer, and a portion corresponding to a bending portion of the coil is formed in the collective conductor fixed to each other via the adhesive layer. An assembly conductor segment coil for use in a stator of a rotating electrical machine, wherein the conductor wires are separated from each other and deformed by being non-fixed, and the assembly conductor is bent in the stacking direction at the bending portion. Manufacturing method.
In the manufacturing method of the collective conductor segment coil of Claim 7,
An assembly conductor segment coil used for a stator of a rotating electrical machine, wherein a length corresponding to a bending portion of the coil has a length of a non-fixed portion inside the bend longer than a length of a non-fixed portion outside the bend. Production method.
In the manufacturing method of the collective conductor segment coil of Claim 7,
A method for producing a collective conductor segment coil for use in a stator of a rotating electrical machine, wherein when bending the collective conductor at the bent portion, a wedge is pushed in to shift each conductor wire in a direction perpendicular to the stacking direction. .