WO2023233618A1 - Stator de machine dynamo-électrique et procédé de fabrication de stator de machine dynamo-électrique - Google Patents

Stator de machine dynamo-électrique et procédé de fabrication de stator de machine dynamo-électrique Download PDF

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Publication number
WO2023233618A1
WO2023233618A1 PCT/JP2022/022478 JP2022022478W WO2023233618A1 WO 2023233618 A1 WO2023233618 A1 WO 2023233618A1 JP 2022022478 W JP2022022478 W JP 2022022478W WO 2023233618 A1 WO2023233618 A1 WO 2023233618A1
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WO
WIPO (PCT)
Prior art keywords
coil
core
circumferential
radial
stator
Prior art date
Application number
PCT/JP2022/022478
Other languages
English (en)
Japanese (ja)
Inventor
智 荊
健一 中山
徳昭 日野
モハマドバシール ズライカ
章人 戸谷
勇輝 熊田
貴裕 森
Original Assignee
日立Astemo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 日立Astemo株式会社 filed Critical 日立Astemo株式会社
Priority to PCT/JP2022/022478 priority Critical patent/WO2023233618A1/fr
Publication of WO2023233618A1 publication Critical patent/WO2023233618A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors

Definitions

  • the present invention relates to a stator for a rotating electrical machine and a method for manufacturing a stator for a rotating electrical machine.
  • Patent Document 1 listed below discloses a method of manufacturing a stator for a rotating electrical machine in which the joints of the leg portions of segment conductors are sealed with an insulating resin to improve the insulation of the coil ends.
  • a coil extending in the axial direction from the slot of the stator and a coil inclined in the axial direction are brought close to each other by a chuck and welded at their respective ends.
  • the axially extending coil and the inclined coil may come into contact with each other at a portion other than the joint portion, which causes the problem that the enamel layer of the coil is rubbed and the insulation performance deteriorates.
  • a stator of a rotating electrical machine includes an annular core having a plurality of slots in the circumferential direction, a plurality of straight parts provided along the radial direction of the plurality of slots, and a part extending from both ends of the straight part to the outside of the core.
  • a stator for a rotating electrical machine comprising a plurality of coils having a coil end portion extending from the core, the plurality of coils having a coil end portion extending from the end surface of the core along the axial direction.
  • a second coil that extends from an end surface of the core and is inclined in the circumferential direction with respect to the axial direction, and the coil end portion of the first coil extends in the radial direction.
  • the coil end portion of the second coil includes two first radial surfaces facing each other and two first circumferential surfaces facing each other in the circumferential direction, and the coil end portion of the second coil a radial surface, two slanted surfaces facing each other between the two second radial surfaces, an inner slanted surface facing toward the core among the two slanted surfaces, and two second radial surfaces a second circumferential surface adjacent to the surface, and the coil end portion of the second coil has a bent portion that is bent radially outward at a position between the plurality of first coils.
  • a plurality of coils are inserted into an annular core having a plurality of slots in the circumferential direction, and the plurality of inserted coils are oriented along the axial direction from the end face of the core. and a second coil extending from an end surface of the core and inclined in the circumferential direction with respect to the axial direction, the coil end portion of the first coil and the second coil extending from the end surface of the core.
  • stator for a rotating electrical machine that can be welded without reducing insulation performance, and a method for manufacturing the stator for a rotating electrical machine.
  • a stator 10 of a rotating electric machine includes a plurality of coils 1 and a stator core 2 (hereinafter referred to as core 2).
  • the plurality of coils 1 function as a stator 10 by being inserted into the core 2.
  • the plurality of coils 1 are inserted into the stator 10 at predetermined intervals in the circumferential direction.
  • the coil 1 is, for example, an electrically conductive segment conductor whose surface is coated with an enamel layer.
  • an annular core 2 includes a plurality of slots 2a into which a plurality of coils 1 are inserted in the circumferential direction.
  • a plurality of coils 1 are inserted into the slots 2a along the radial direction of the stator 10.
  • the portion inserted into the slot 2a is referred to as a straight portion, and the portion extending from both ends of the straight portion to the outside of the core 2 is referred to as a coil end portion.
  • the plurality of coils 1 include a straight coil 3 extending along the axial direction from the end surface of the core 2, and a diagonal coil 4 extending from the end surface of the core 2 and inclined in the circumferential direction with respect to the axial direction.
  • the straight coil 3 is defined as a first coil 3
  • the diagonal coil 4 is defined as a second coil 4.
  • the coil end portions of the first coil 3 and the coil end portions of the second coil 4 are radially coil chucked 1b when their ends are joined to each other, but at this time, coil contact 1a occurs with each other.
  • coil contact 1a occurs, the problem arises that the enamel layers of the coils rub against each other, resulting in a decrease in insulation performance.
  • FIG. 3(a) is an explanatory diagram of a coil configuration according to an embodiment of the present invention
  • FIG. 3(b) is a diagram of FIG. 3(a) viewed from the circumferential direction.
  • FIG. 4(a) is an explanatory diagram of the bent portion of the coil in FIG. 3
  • FIG. 4(b) is an explanatory diagram of the joining of the coils.
  • the coil end portion of the second coil 4 has a bent portion 5 that is bent radially outward at a position between the plurality of first coils 3.
  • the bending portion 5 allows the coil end portion of the first coil 3 and the coil end portion of the second coil 4 to be suppressed. Since the ends of the end portions are close to each other, the process of forming the coil chuck 1b (FIG. 2) in the radial direction can be simplified and welded together.
  • a welded portion 6 is formed by welding the ends of the coil end portion of the first coil 3 and the coil end portion of the second coil 4 to each other.
  • the coil end portion of the first coil 3 includes two first radial surfaces 3c facing each other in the radial direction and two first circumferential surfaces 3a facing each other in the circumferential direction.
  • the coil end portion of the second coil 4 includes two second radial surfaces 4c facing each other in the radial direction, two inclined surfaces 4D, 4d facing each other between the two second radial surfaces 4c, and two second radial surfaces 4c facing each other in the radial direction.
  • the inner inclined surface 4d faces the core 2 side, and a second circumferential surface 4a adjacent to the two second radial surfaces 4c.
  • the coil end portion of the first coil 3 includes a first axial surface 3b adjacent to two first radial surfaces 3c and two first circumferential surfaces 3a.
  • the coil end portion of the second coil 4 is arranged in the second axial direction adjacent to the two second radial surfaces 4c and the external inclined surface 4D and the second circumferential surface 4a, which are opposite to the internal inclined surface 4d. It has a surface 4b.
  • a plurality of coils 1 are inserted into an annular core 2 having a plurality of slots 2a in the circumferential direction.
  • the plurality of inserted coils 1 include a first coil 3 extending along the axial direction from the end surface of the core 2, and a first coil 3 extending from the end surface of the core 2 and inclined in the circumferential direction with respect to the axial direction.
  • a second coil 4 is included.
  • the stator 10 of a rotating electrical machine includes an annular core 2 having a plurality of slots 2a in the circumferential direction, a plurality of straight portions provided along the radial direction of the plurality of slots 2a, and a plurality of straight portions of the straight portions. It includes a plurality of coils 1 having coil end portions extending from both ends to the outside of the core 2.
  • the plurality of coils 1 include a first coil 3 that extends along the axial direction from the end surface of the core 2, and a second coil 4 that extends from the end surface of the core 2 and is inclined in the circumferential direction with respect to the axial direction. and, including.
  • the coil end portion of the first coil 3 includes two first radial surfaces 3c facing each other in the radial direction and two first circumferential surfaces 3a facing each other in the circumferential direction.
  • the coil end portion of the second coil 4 has two second radial surfaces 4c facing each other in the radial direction, two sloped surfaces 4D, 4d facing each other between the two second radial surfaces 4c, and two sloped surfaces 4D, 4d facing each other between the two second radial surfaces 4c. Of the surfaces 4D and 4d, it includes an inner inclined surface 4d facing the core 2 side and a second circumferential surface 4a adjacent to the two second radial surfaces 4c.
  • the coil end portion of the second coil 4 has a bent portion 5 that is bent radially outward at a position between the plurality of first coils 3 .
  • the coil end portion of the first coil 3 includes two first radial surfaces 3c, two first circumferential surfaces 3a, and a first axial surface 3b adjacent to each other.
  • the coil end portion of the second coil 4 has a second axial surface 4b adjacent to two second radial surfaces 4c, an external inclined surface 4D opposite to the internal inclined surface 4d, and a second circumferential surface 4a. Equipped with. By doing this, it is possible to determine the axial plane for welding the coils together.
  • a plurality of coils 1 are inserted into an annular core 2 having a plurality of slots 2a in the circumferential direction.
  • the inserted plurality of coils 1 include a first coil 3 that extends along the axial direction from the end surface of the core 2, and a first coil 3 that extends from the end surface of the core 2 and is inclined in the circumferential direction with respect to the axial direction. 2 coils 4.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Ce stator d'une machine dynamo-électrique comprend une première bobine qui s'étend vers l'extérieur le long d'une direction axiale à partir d'une surface d'extrémité de la partie centrale, et une seconde bobine qui s'étend hors de la surface d'extrémité de la partie centrale et est inclinée dans la direction circonférentielle par rapport à la direction axiale. La section d'extrémité de bobine de la première bobine est pourvue de deux premières surfaces de direction radiale et de deux premières surfaces de direction circonférentielle. La section d'extrémité de bobine de la seconde bobine est pourvue de deux secondes surfaces de direction radiale, de deux surfaces inclinées, et d'une seconde surface de direction circonférentielle qui est adjacente aux secondes surfaces de direction radiale et à la seconde surface inclinée faisant face à la partie centrale. La section d'extrémité de bobine de la seconde bobine a des sections incurvées qui sont incurvées vers des extérieurs de direction radiale respectifs à des positions entre les premières bobines.
PCT/JP2022/022478 2022-06-02 2022-06-02 Stator de machine dynamo-électrique et procédé de fabrication de stator de machine dynamo-électrique WO2023233618A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/022478 WO2023233618A1 (fr) 2022-06-02 2022-06-02 Stator de machine dynamo-électrique et procédé de fabrication de stator de machine dynamo-électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/022478 WO2023233618A1 (fr) 2022-06-02 2022-06-02 Stator de machine dynamo-électrique et procédé de fabrication de stator de machine dynamo-électrique

Publications (1)

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WO2023233618A1 true WO2023233618A1 (fr) 2023-12-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011142747A (ja) * 2010-01-07 2011-07-21 Denso Corp 回転電機の固定子及びその製造方法
JP2012139075A (ja) * 2010-12-28 2012-07-19 Hitachi Automotive Systems Ltd 回転電機
WO2020054233A1 (fr) * 2018-09-10 2020-03-19 日立オートモティブシステムズ株式会社 Stator de machine électrique tournante et machine électrique tournante comprenant ledit stator
US20200395804A1 (en) * 2019-06-12 2020-12-17 Ford Global Technologies, Llc Hairpin winding electric machine
JP2022020235A (ja) * 2020-07-20 2022-02-01 日立Astemo株式会社 回転電機および回転電機の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011142747A (ja) * 2010-01-07 2011-07-21 Denso Corp 回転電機の固定子及びその製造方法
JP2012139075A (ja) * 2010-12-28 2012-07-19 Hitachi Automotive Systems Ltd 回転電機
WO2020054233A1 (fr) * 2018-09-10 2020-03-19 日立オートモティブシステムズ株式会社 Stator de machine électrique tournante et machine électrique tournante comprenant ledit stator
US20200395804A1 (en) * 2019-06-12 2020-12-17 Ford Global Technologies, Llc Hairpin winding electric machine
JP2022020235A (ja) * 2020-07-20 2022-02-01 日立Astemo株式会社 回転電機および回転電機の製造方法

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