WO2011086648A1 - 回転電機およびその製造方法 - Google Patents

回転電機およびその製造方法 Download PDF

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Publication number
WO2011086648A1
WO2011086648A1 PCT/JP2010/007499 JP2010007499W WO2011086648A1 WO 2011086648 A1 WO2011086648 A1 WO 2011086648A1 JP 2010007499 W JP2010007499 W JP 2010007499W WO 2011086648 A1 WO2011086648 A1 WO 2011086648A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric wire
stator
insulating coating
winding
coating
Prior art date
Application number
PCT/JP2010/007499
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕基 塩田
厚 山竹
健一 菅
茂之 山本
利雄 磯岡
信一 山口
梢 磯崎
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to KR1020127017388A priority Critical patent/KR101420949B1/ko
Priority to JP2011549774A priority patent/JP5425226B2/ja
Priority to CN201080052673.1A priority patent/CN102668334B/zh
Publication of WO2011086648A1 publication Critical patent/WO2011086648A1/ja

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Classifications

    • 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
    • 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
    • H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
    • 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
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles
    • 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
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines

Definitions

  • the present invention relates to a rotating electric machine having a stator in which a predetermined number of stator divided bodies each having an electric wire wound around a stator piece are annularly joined, and a method for manufacturing the same.
  • a ground insulating layer is provided by an insulator formed integrally with a stator piece made of laminated electromagnetic steel sheets, and enamel-coated electric wires are wound on this ground insulating layer to create a stator split body. A predetermined number of these are joined to form an annular stator.
  • the insulating sheet inserted between the adjacent windings and the gap surrounded by the insulating sheet, the windings, and the insulator are filled.
  • An insulating layer between the phases is formed in the resin portion. (For example, refer to Patent Document 2).
  • the present invention has been made to solve the above-described problems, and provides a high-efficiency rotating electrical machine that improves the space factor of the winding while maintaining the reliability of insulation. Objective.
  • a predetermined number of stator divided bodies each having a winding formed by winding an electric wire on a stator piece divided in the circumferential direction in units of pole teeth and laminated with electromagnetic steel sheets.
  • a rotating electric machine having a stator joined in an annular shape, wherein the electric wire has a first insulating coating, and among the plurality of stator segments, the windings of the stator segments adjacent to each other are the outermost windings.
  • a predetermined portion of the electric wire facing the outer layer electric wire portion and forming at least one of the respective outermost layer electric wire portions is covered with a second insulating coating provided on the first insulating coating, The second insulating coating covers the surface on the opposite side.
  • a method of manufacturing a rotating electrical machine the step of forming a second insulating coating on a predetermined portion of the electric wire having the first insulating coating by powder coating or electrodeposition coating, and forming the processed electric wire into an insulator. Winding a stator piece covered with a coil so that a predetermined part covers the outermost layer of the winding to create a stator divided body, and a predetermined number of stator divided bodies are joined in an annular shape and fixed.
  • This invention can provide a high-efficiency rotating electric machine that improves the space factor of the stator windings while maintaining the insulation reliability.
  • FIG. 8 is a sectional view showing a section AA of FIG. It is sectional drawing which shows the state of the joining of the stator division body adjacent to each other of Embodiment 2 of this invention. It is sectional drawing which shows the state of the joining of the mutually adjacent stator division body of Embodiment 3 of this invention. It is explanatory drawing for demonstrating the influence of the void ratio of the 2nd insulation coating which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the state of the joining of the stator division body adjacent to each other of Embodiment 4 of this invention.
  • FIG. 1 shows a rotating electrical machine 1 according to Embodiment 1 for carrying out the present invention.
  • the stator 2 is held by a housing 4 so as to surround the rotor 3.
  • the rotor 2 is configured integrally with a rotating shaft 5, and the rotating shaft 5 is rotatably held by a bearing 6.
  • FIG. 2 shows a plurality of stator divided bodies 11 each having a winding 10 formed by winding an electric wire 9 on a stator piece 7 divided in the circumferential direction in units of pole teeth and laminated with electromagnetic steel plates. It is a perspective view which shows the stator 2 joined to several ring shape, and is notched so that the internal structure of the stator division
  • FIG. 3 is a perspective view for explaining the configuration of the stator divided body 11. As shown in FIG. 3 (a), the stator divided body 11 is formed by covering the stator piece 7 punched out in a substantially T shape after laminating the electromagnetic steel sheets with an insulator 13 as shown in FIG. 3 (b).
  • a winding groove 12 that is insulated from the stator piece 7 is formed, and as shown in FIG. 3C, a winding 10 is formed by winding an electric wire 9 around the winding groove 12.
  • the insulator 13 ensures the insulation between the stator piece 7 and the winding 10 and plays a role in preventing damage to the electric wire 9 wound with tension. In general, since the stator piece 7 is at ground potential, the insulator 13 serves to insulate the winding 10 from the ground.
  • FIG. 4 shows a cross-sectional view of the cross section S of FIG. 3C viewed from the direction of the arrow in the figure, and the electric wire 9 is a coating obtained by applying a first insulating coating 8b, for example, enamel coating, to the conducting wire 8a. It is an electric wire and is wound sequentially from the central axis side of the stator piece 7. Outermost layer electric wire portion 9a located in the outermost layer of winding 10 of stator divided body 11 faces winding 10 of another adjacent stator divided body 11 (not shown). The outermost layer electric wire portion 9a is provided with a second insulating coating 14 in addition to the first insulating coating 8b.
  • a first insulating coating 8b for example, enamel coating
  • FIG. 5 is a schematic diagram for explaining a method of providing the second insulating coating 14 on the electric wire according to the first embodiment of the present invention.
  • 5A shows a section BB of FIG. 5B
  • FIG. 5B shows a section AA of FIG.
  • the second insulating coating 14 is made of an insulating material mainly composed of a resin, such as epoxy, polyimide, polyamide, polyester, PPS (polyphenylene sulfide), etc.
  • An insulating film mainly composed of a thermoplastic resin is applied from above the first insulating coating 8b of the predetermined portion 9aa of the electric wire 9 which is the outermost layer electric wire portion 9a before winding, so that an arbitrary thickness can be easily obtained. It can be made variable.
  • powder coating, electrodeposition coating, or the like a high-quality insulating film having almost no voids can be obtained as compared with injection molding or resin filling in the gap between already wound wires.
  • the coating treatment can be performed in an optimum environment, and a stable film quality can be obtained. can get.
  • FIG. 11 is an explanatory diagram for explaining the influence of the void ratio of the second insulating coating 14 according to the first embodiment of the present invention, and the withstand voltage V 0 of the second insulating coating 14 when there is no void.
  • the ratio of the withstand voltage V ⁇ when the void content ⁇ is 1%, 2%, 3%, and 4%, respectively, is shown. From the figure, it can be seen that when the void content ⁇ is larger than 2%, the withstand voltage suddenly decreases. That is, by suppressing the void content ⁇ to 2% or less, it is possible to obtain a withstand voltage corresponding to the case where there is no void.
  • the outermost layer electric wire portion 9 a on which the second insulating coating 14 is formed and the unprocessed electric wire portion 9 c having only the first insulating coating 8 b are continuously connected to one electric wire 9. It is supplied to the winding process in a state of being wound around the winding frame 16, and is wound around the winding groove 12 of the stator piece 7 covered with the insulator 13 to form the stator divided body 11.
  • stator divided bodies 11 are joined in a predetermined number of rings to form the stator 2, and the rotor 3 is inserted into the stator 2 and incorporated into the housing 4, thereby insulating the stator 2.
  • a highly efficient rotating electrical machine 1 with improved winding space factor while maintaining reliability can be obtained.
  • FIG. 7 is a cross-sectional view showing a state of joining of the stator divided bodies 11a and 11b adjacent to each other.
  • FIG. 8 shows a cross section AA of FIG.
  • a second insulation coating 14 is provided on the outermost layer electric wire portions 9a, 9b located in the outermost layers of the respective windings 10a, 10b.
  • the respective windings 10a and 10b of the stator divided bodies 11a and 11b adjacent to each other are in different phases, and insulation between the phases is ensured by the second insulating coatings 14 of the stator divided bodies 11a and 11b facing each other.
  • each of the second insulation coatings 14 of the stator divided bodies 11a and 11b is configured to cover a surface (interphase side) facing the windings 10a and 10b.
  • the windings 12a and 12b side of the outermost layer electric wire portions 9a and 9b of the stator divided bodies 11a and 11b, that is, the inner unprocessed electric wire portions 9c have different phases. Even if there is an insulation defect such as a pinhole in the coating of the unprocessed electric wire portion 9c without directly facing the winding 10a or 10b, the withstand voltage between the phases does not decrease. Therefore, in order to maintain the reliability of insulation, it is not necessary to increase the distance between the windings 10a and 10b of the stator divided bodies 11a and 11b adjacent to each other, and it is necessary to increase the covering of the unprocessed electric wire portion 9c. Therefore, the space factor of the winding can be improved accordingly.
  • the second insulating coating 14 is made of a material that can be deformed by an external force, the tension at the time of winding and the stator divided bodies 11a and 11b adjacent to each other when the stator divided bodies 11a and 11b are joined to each other can be obtained. Since the second insulating coating 14 is deformed by the force of pressing each other, the contact surface between the wires constituting the outermost layer electric wire portions 9a, 9b, the contact surface between the outermost layer electric wire portion 9a and the insulator 13, and the outermost layer electric wire portion 9a, 9b. A contact surface between the outer layer electric wire portion 9b and the insulator 13 can be sufficiently secured. As a result, as shown in FIG. 8, it is possible to configure the second insulating coating 14 so as to cover the surfaces on which the windings 10a and 10b face each other without any gaps. And the space factor of the winding can be improved.
  • the windings 10a and 10b of the stator divided bodies 11a and 11b adjacent to each other are opposed to each other at the outermost layer electric wire portions 9a and 9b, thereby forming the outermost layer electric wire portions 9a and 9b, respectively.
  • a second insulating coating 14 is formed on the predetermined portion 9aa of the electric wire 9 from above the first insulating coating 8b before winding, and the windings 10a, 10b are opposed to each other by the second insulating coating 14. Since each side is covered, the space factor of the stator winding can be improved while maintaining the reliability of the insulation between the phases, and the effect of realizing the highly efficient rotating electrical machine 1 can be obtained. .
  • 9 is formed by winding a predetermined portion 9aa on the winding groove 12 of the stator piece 7 covered with the insulator 13 so as to cover the outermost layer of the winding 10, and the stator division. Since the stator 11 is manufactured by joining the predetermined number of bodies 11 in a ring shape and the step of inserting and assembling the rotor 3 in the stator 2, the stator is maintained while maintaining the reliability of insulation between the phases. Thus, a highly efficient rotating electrical machine 1 with improved winding space factor can be obtained.
  • powder coating and electrodeposition coating are shown as the method of forming the second insulating coating 14, but spray wiping using electrostatic attraction, fluid dipping, etc. may be used.
  • the outermost layer electric wire portion 9a on which the second insulating coating 14 is formed and the untreated electric wire portion 9c having only the first insulating coating 8b are continuously connected.
  • the electric wire 9 is once wound around the winding frame 16, and the step of forming the second insulating coating 14 on the predetermined portion 9aa of the electric wire 9 and the step of forming the electric wire 9 on the winding groove 12 are wound. It goes without saying that the step of winding the wire 9 having been subjected to the forming process around the winding frame 16 can be omitted by continuously performing the step.
  • the second insulating coating 14 is configured so as to cover the surfaces of the windings 10 on the opposite sides or without any gaps.
  • an insulating material that can be largely deformed by an external force such as low elastic epoxy, low elastic polyimide, low elastic polyamide, polyester, silicone rubber, urethane or the like having a long linear molecular structure as the insulating coating 14, the adjacent outermost layer You may comprise so that the uneven
  • the second insulating coating 14 in close contact with the concavity and convexity surfaces of the adjacent wires 9 that are adjacent to each other without any voids, the concave and convex voids between the electric wires 9 that are weak points of insulation are eliminated. Insulation reliability can be further improved.
  • the second insulating coating 14 is formed of an insulating material that can be largely deformed by an external force.
  • the electric wire in which the second insulating coating 14 is formed of a semi-cured resin material. 9 is wound around the winding grooves 12a and 12b of the stator pieces 7a and 7b covered with the insulator 13, and the stator divided bodies 11a and 11b adjacent to each other are joined in a predetermined number to form a stator 2. Thereafter, the semi-cured resin material may be finally cured.
  • the second insulating coating 14 is provided on both the outermost layer electric wire portions 9a and 9b of the stator divided bodies 11a and 11b adjacent to each other.
  • the second insulating coating 14 may be provided only on the outermost layer electric wire portion 9a of the one stator divided body 11a.
  • the second insulating coating 14 is provided over the entire circumference of both or either one of the outermost layer electric wire portions 9a and 9b.
  • 9a, 9b or either one of them is provided only on the surface of the adjacent stator segment 11a or 11b (the surface between the phases) or on the adjacent stator segment 11a or 11b side
  • the second insulation coating 14 having a different thickness in the circumferential direction of the electric wire as described above, for example, to improve the wear resistance on the surface of the first insulating coating 8b of the electric wire 9. Since the lubricant is applied, the lubricant may be removed only on one side, and an insulating layer may be applied to the portion by spray 15 or the like.
  • Embodiment 4 FIG.
  • the stator piece 7 divided in the circumferential direction in pole teeth units and laminated with magnetic steel sheets is covered with the insulator 13, and the second winding groove 12 insulated from the stator piece 7 is provided in the second winding groove 12.
  • the stator divided body 11 was formed by winding the electric wire 9 covering the insulating layer 14, but in this embodiment, as shown in FIG. 12, in the winding grooves 12a and 12b of the adjacent stator pieces 7, After the electric wire 9 having the first insulating coating 8b is wound around the conductor 8a, the second insulating coating 14 is applied to the outermost layer electric wire portions 9a, 9b by powder coating, electrodeposition coating or spray 15 coating. Then, the adjacent stator divided bodies 11a and 11b are joined.
  • Other configurations are the same as those in the first embodiment, and thus description thereof is omitted.
  • the space factor of the winding can be further improved by applying the second insulating coating 14 only to the interphase sides of the outermost layer electric wire portions 9a and 9b facing each other. it can.
  • the insulator 13 having the winding groove 12 is used.
  • the same effect can be obtained even in the structure without the winding groove 12 from the viewpoint of withstand voltage. There is no.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Motors, Generators (AREA)
PCT/JP2010/007499 2010-01-14 2010-12-24 回転電機およびその製造方法 WO2011086648A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020127017388A KR101420949B1 (ko) 2010-01-14 2010-12-24 회전 전기 기기 및 그 제조 방법
JP2011549774A JP5425226B2 (ja) 2010-01-14 2010-12-24 回転電機およびその製造方法
CN201080052673.1A CN102668334B (zh) 2010-01-14 2010-12-24 旋转电机及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-005880 2010-01-14
JP2010005880 2010-01-14

Publications (1)

Publication Number Publication Date
WO2011086648A1 true WO2011086648A1 (ja) 2011-07-21

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Family Applications (1)

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PCT/JP2010/007499 WO2011086648A1 (ja) 2010-01-14 2010-12-24 回転電機およびその製造方法

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JP (1) JP5425226B2 (ko)
KR (1) KR101420949B1 (ko)
CN (1) CN102668334B (ko)
WO (1) WO2011086648A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019208032A1 (ja) * 2018-04-27 2019-10-31 日立オートモティブシステムズ株式会社 固定子、及び回転電機
JP7570173B2 (ja) 2018-11-19 2024-10-21 マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング 電気機械用のステータを製造するための方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103390947B (zh) * 2013-05-23 2015-08-12 杭州娃哈哈科技有限公司 一种旋转电机的绝缘结构
CN111066227B (zh) * 2017-09-06 2022-03-01 三菱电机株式会社 旋转电机的定子及定子的制造方法
JP6740306B2 (ja) * 2018-09-19 2020-08-12 本田技研工業株式会社 ステータ
KR20230008865A (ko) * 2020-06-17 2023-01-16 닛폰세이테츠 가부시키가이샤 전자 강판용 코팅 조성물, 전자 강판, 적층 코어 및 회전 전기 기기
KR20220127558A (ko) * 2021-03-11 2022-09-20 엘지이노텍 주식회사 모터

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JPS585903A (ja) * 1981-07-01 1983-01-13 株式会社デンソー 熱放散性絶縁物およびその製造方法
JPS62103905A (ja) * 1985-10-30 1987-05-14 東洋電機製造株式会社 電着絶縁導体
JPH0956099A (ja) * 1995-06-07 1997-02-25 Matsushita Electric Ind Co Ltd 電動機の固定子及びその製造方法
JP2005020797A (ja) * 2003-06-23 2005-01-20 Denso Corp Ｄｃモータ
JP2005072547A (ja) * 2002-12-05 2005-03-17 Denso Corp 点火コイルおよびその製造方法
JP2005137180A (ja) * 2003-10-31 2005-05-26 Tamagawa Seiki Co Ltd ステータ巻線絶縁構造および絶縁ボビン
JP2005176482A (ja) * 2003-12-10 2005-06-30 Fanuc Ltd 電動機

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Publication number Priority date Publication date Assignee Title
JP3156370B2 (ja) * 1992-06-22 2001-04-16 富士電機株式会社 回転電機の界磁巻線の絶縁処理方法
JP2000333399A (ja) * 1999-05-21 2000-11-30 Matsushita Electric Ind Co Ltd 電動機の固定子
JP2000333388A (ja) * 1999-05-21 2000-11-30 Matsushita Electric Ind Co Ltd 固定子

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585903A (ja) * 1981-07-01 1983-01-13 株式会社デンソー 熱放散性絶縁物およびその製造方法
JPS62103905A (ja) * 1985-10-30 1987-05-14 東洋電機製造株式会社 電着絶縁導体
JPH0956099A (ja) * 1995-06-07 1997-02-25 Matsushita Electric Ind Co Ltd 電動機の固定子及びその製造方法
JP2005072547A (ja) * 2002-12-05 2005-03-17 Denso Corp 点火コイルおよびその製造方法
JP2005020797A (ja) * 2003-06-23 2005-01-20 Denso Corp Ｄｃモータ
JP2005137180A (ja) * 2003-10-31 2005-05-26 Tamagawa Seiki Co Ltd ステータ巻線絶縁構造および絶縁ボビン
JP2005176482A (ja) * 2003-12-10 2005-06-30 Fanuc Ltd 電動機

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019208032A1 (ja) * 2018-04-27 2019-10-31 日立オートモティブシステムズ株式会社 固定子、及び回転電機
JPWO2019208032A1 (ja) * 2018-04-27 2021-02-12 日立オートモティブシステムズ株式会社 固定子、及び回転電機
JP7030961B2 (ja) 2018-04-27 2022-03-07 日立Astemo株式会社 固定子、及び回転電機
JP7570173B2 (ja) 2018-11-19 2024-10-21 マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツング 電気機械用のステータを製造するための方法

Also Published As

Publication number Publication date
KR101420949B1 (ko) 2014-07-17
JPWO2011086648A1 (ja) 2013-05-16
CN102668334B (zh) 2015-08-05
KR20120104281A (ko) 2012-09-20
CN102668334A (zh) 2012-09-12
JP5425226B2 (ja) 2014-02-26

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