+

WO2018142465A1 - Machine électrique tournante du type à entrefer axial - Google Patents

Machine électrique tournante du type à entrefer axial Download PDF

Info

Publication number
WO2018142465A1
WO2018142465A1 PCT/JP2017/003411 JP2017003411W WO2018142465A1 WO 2018142465 A1 WO2018142465 A1 WO 2018142465A1 JP 2017003411 W JP2017003411 W JP 2017003411W WO 2018142465 A1 WO2018142465 A1 WO 2018142465A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
axial gap
core
gap type
electrical machine
Prior art date
Application number
PCT/JP2017/003411
Other languages
English (en)
Japanese (ja)
Inventor
高橋　秀一
恭永 米岡
利文 鈴木
山崎　克之
大輔 倉井
潤 櫻井
田村　均
Original Assignee
株式会社日立産機システム
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 株式会社日立産機システム filed Critical 株式会社日立産機システム
Priority to JP2018565105A priority Critical patent/JPWO2018142465A1/ja
Priority to PCT/JP2017/003411 priority patent/WO2018142465A1/fr
Priority to CN201780077026.8A priority patent/CN110073578A/zh
Publication of WO2018142465A1 publication Critical patent/WO2018142465A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/08—Insulating casings

Definitions

  • the present invention relates to an axial gap type rotating electrical machine, and more particularly to an axial gap type rotating electrical machine that molds a stator (stator).
  • An axial gap type rotating electrical machine is a device in which a cylindrical stator and a disk-shaped rotor are arranged face-to-face with a predetermined air gap in the direction of the rotation axis.
  • the stator includes a plurality of iron cores arranged to warp in the inner peripheral direction of the housing portion, and a coil wound around the cores.
  • the gap surface that generates torque increases in proportion to the square of the diameter. Therefore, the axial gap type rotating electrical machine is more efficient and thinner than the radial gap type mechanism that has a gap in the radial direction. It is considered a suitable rotating electrical machine.
  • a double rotor type axial gap type rotating electrical machine in which a single stator is sandwiched between two rotors can secure twice the gap area, and thus may have better characteristics. It is attracting attention as a structure.
  • this double rotor type axial gap type rotating electrical machine since the iron core and the coil are arranged independently, they are often supported and fixed to the housing by a mold resin.
  • the housing has a hole portion that communicates with the outside on the surface facing the stator, and the stator has a plurality of core units facing the inner peripheral surface of the housing and the holes.
  • An axial air gap type rotating electrical machine in which a resin is filled in a part and molded integrally is disclosed (FIG. 4, paragraph number 0024).
  • Patent Document 1 by providing a hole for fixing the resin mold in the housing, a tensile force acting on the tip of the resin filled in the hole along with the force acting in the rotation axis direction and the rotation axis radial direction. It is said that the housing can be prevented and damage to the housing can be prevented.
  • thermosetting resin In general, a thermosetting resin is often used when molding with a resin mold. When such a resin is used, in the latter half of the resin encapsulation process, the resin injected earlier begins to cure, and it is necessary to encapsulate the resin at a high pressure in order to fill the resin to every corner.
  • An axial gap type rotating electrical machine that can be easily manufactured by making the resin mold easy to flow when the stator is formed by molding is desired.
  • the axial gap type rotating electrical machine preferably includes a stator in which a plurality of core units formed of a core, a coil, and a bobbin are annularly arranged along the inner peripheral surface of the housing with a rotation axis as a center.
  • An axial gap type rotating electrical machine having a rotor facing the end face of the core through a predetermined gap in the axial diameter direction, wherein the housing has an outlet for drawing the wiring to the rotor to the outside.
  • an inclined surface is formed on the lower side of the outlet of the housing so that the inner peripheral side is downward.
  • the housing has a recess under the outlet, and the inclined surface and the recess are integrated.
  • the stator when the stator is molded, it is possible to provide an axial gap type rotating electrical machine that can easily flow through the resin mold and avoid breakage of the bobbin of the core unit.
  • FIG. 5 is a BB cross-sectional view of a stator portion of the axial gap type rotating electric machine of FIG. 4 when a resin mold is filled.
  • FIG. 5 is an enlarged cross-sectional view of a main part around a core unit and a housing of the axial gap type rotating electric machine of FIG. 4 when a resin mold is filled. It is the principal part enlarged view of the core unit and housing periphery of the axial gap type rotary electric machine which concerns on Embodiment 1 (the 1).
  • FIG. 3 is an enlarged view of a main part around the core unit and the housing of the axial gap type rotating electric machine according to the first embodiment (No. 2).
  • FIG. 3 is a perspective view of the vicinity of the drawer opening of the housing of the axial gap type rotating electric machine according to the first embodiment.
  • FIG. 6 is an enlarged cross-sectional view of a main part around the core unit and the housing of the axial gap type rotating electric machine according to the first embodiment when the resin mold is filled (part 2). It is the principal part enlarged view of the core unit and housing periphery of the axial gap type rotary electric machine which concerns on Embodiment 1 (the 1).
  • FIG. 3 is an enlarged view of a main part around the core unit and the housing of the axial gap type rotating electric machine according to the first embodiment (No. 2).
  • FIG. 3 is a perspective view of the vicinity of the drawer opening of the housing of the axial gap type rotating electric machine according to the first embodiment. It is the core unit of the axial gap type rotary electric machine which concerns on Embodiment 1 when satisfy
  • FIG. 6 is an enlarged cross-sectional view of a main part around the core unit and the housing of the axial gap type rotating electric machine according to the first embodiment when the resin mold is filled (part 2).
  • Embodiment 1 according to the present invention will be described with reference to FIGS. 1A to 9B.
  • FIG. 1A shows a schematic configuration of a double rotor type axial gap type permanent magnet synchronous motor 1 (hereinafter sometimes simply referred to as “motor 1”) according to the first embodiment.
  • the motor 1 includes a doughnut-shaped stator 19 disposed along the inner peripheral surface of the housing 50, and two disk-shaped rotors 30 having predetermined air pressure in the rotational axis radial direction. They are arranged so as to face each other with a gap interposed therebetween.
  • the housing 50 is formed by, for example, aluminum die casting.
  • the rotor 30 has a disk center fixed to the rotating shaft 40.
  • the rotating shaft 40 is disposed through the central portion of the stator 19, and both end portions thereof are rotatably fixed to the end bracket 60 via bearings 70.
  • the end bracket 60 is fixed in the vicinity of both opening ends of the housing 50 having a substantially cylindrical shape.
  • the rotor 30 is provided with a permanent magnet 31 via a rotor base 32 on a circular yoke 33.
  • the yoke 33 may not be provided, and the rotor base 32 may be made of a material that functions as a yoke.
  • the permanent magnet is composed of a plurality of flat-plate magnets having a substantially sector shape centering on the direction of the rotation axis 40, and magnets having different polarities are arranged in the rotation direction.
  • the permanent magnet 31 shall apply a ferrite, it is not restricted to this.
  • the armature configuration of the motor 1 is as shown in the perspective view of FIG. 1B.
  • the stator 19 is composed of twelve core units 20 arranged along the inner periphery of the housing 50 with the rotation axis A as the center direction.
  • One core unit 20 constitutes one slot.
  • the core units 20 and the inner peripheral surface of the housing 50 are formed integrally with each other by a resin mold and fixed to a stator (described later).
  • the core unit 20 includes a bobbin 22, a core 21, and a coil 23 as shown in FIG.
  • the core 21 is an amorphous metal mainly composed of iron having a substantially trapezoidal or triangular prism shape formed by sequentially laminating metal plates formed so as to gradually increase in width in the radial direction.
  • the cross-sectional shape of the core 21 may be a cross-section having two oblique sides having intersections in the extending direction other than the general trapezoidal shape or the triangular shape.
  • the metal plate to be laminated may be iron or the like, but in this embodiment, the metal containing amorphous is thinned into a tape shape, and the core 21 is obtained by sequentially laminating the width in the rotation direction. It has become.
  • the housing 50 When resin molding is performed so as to be integrated with the core units 20 and the inner periphery of the housing 50, as shown in FIG. 3, the housing 50 is inserted into a lower mold 62 having substantially the same inner diameter.
  • a cylindrical middle mold 61 for forming an axial space through which the rotating shaft passes later is disposed in the center of the lower mold 62 from the opposite opening.
  • the core units 20 are arranged in an annular shape around the middle mold 61.
  • the flange portion 22b of the bobbin performs positioning in the radial direction and positioning in the rotation axis rotation direction with the adjacent core unit 20.
  • an upper mold having an outer diameter substantially matching the inner diameter of the housing 50 and having a cylindrical space in the center for penetrating the middle mold 61 is inserted from the housing opening opposite to the lower mold 62, and the core The unit 20 is sandwiched and supported.
  • the mold resin 80 is sealed from the opposing surfaces of the upper mold and the lower mold 62.
  • the mold resin is filled between the core units 20, the inner peripheral surface of the housing 50, the direction of the middle mold 61, and the surface facing the rotor 30 of the collar portion 22 b of the bobbin with almost no gap.
  • a thermosetting unsaturated polyester resin for example, BMC (Bulk Molding Compound) having a low molding shrinkage ratio and high dimensional stability is usually used.
  • stator part of the axial gap type rotating electrical machine When the stator part of the axial gap type rotating electrical machine is viewed from the cross section, it is as shown in FIG. 4, and the cross sectional view taken along the line BB in FIG. 4 is as shown in FIG.
  • a recess 51 for fixing the mold resin 80 and the stator 19 is provided on the inner periphery of the housing 50 at intervals of 90 degrees.
  • a recess-shaped outlet 52 is provided at one location on the inner peripheral side of the housing 50, for example, above the recess 51.
  • a wiring hole 53 is provided from the outlet 52 to connect the wiring from the outside to the stator coil 23. It can be connected.
  • the mold resin 80 is filled up to the line MM in FIGS. 4 and 6, that is, the upper part of the core unit 20 is sufficiently filled. Is filled.
  • the viscosity of the resin increases as the previously injected resin begins to harden, and the pressure applied to the surrounding structure increases, so that the collar of the bobbin 22 of the core unit 20 increases.
  • the portion 22B is likely to be damaged by the influence of high temperature and high pressure.
  • the lower side is expanded at the outlet 52, and the inclined surface 54 is formed on the lower side of the outlet 52 as shown in FIGS. 7A and 8.
  • the mold resin 80 flows into this portion, the sealing pressure is lowered, and the bobbin 22 of the core unit 20 can be prevented from being damaged.
  • the inclined surface provided on the lower side of the outlet 52 is not limited to a flat surface as shown in FIGS. 7B and 9B, and may be an upwardly convex R (round) surface 55. Further, the shape of the slope formed at the outlet 52 is not limited to a flat slope or R surface, but may be a stepped shape, a planar slope, or an inclined shape with gradually different inclination angles.
  • Embodiment 2 to which the present invention is applied will be described below with reference to FIGS. 10A to 12B.
  • an inclined surface for allowing the mold resin 80 to escape is formed on the lower side of the outlet 52 at the final stage of filling with the mold resin 80.
  • an inclined surface for allowing the mold resin 80 to escape is formed on the lower side of the outlet 52, but the shapes of the outlet 52 and the recess 51 are different.
  • the inclined surface provided on the lower side of the outlet 52 is not limited to a flat surface, and may be an upwardly convex R surface 55. It may be a stepped shape, a flat slope, or an inclined shape with gradually different inclination angles.
  • SYMBOLS 1 Motor, 19 ... Stator, 20 ... Core unit, 21 ... Core, 22 ... Bobbin, 23 ... Coil, 30 ... Rotor, 31 ... Permanent magnet, 32 ... Rotor base, 33 ... Yoke, 40 ... Rotating shaft, DESCRIPTION OF SYMBOLS 50 ... Housing, 51, 51a ... Recessed part, 52 ... Outlet, 53 ... Wiring hole, 54, 54a ... Inclined surface, 55 ... R surface, 60 ... End bracket, 70 ... Bearing, 80 ... Mold resin

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention concerne une machine électrique tournante du type à entrefer axial, qui comprend : un stator dans lequel une pluralité d'unités de noyau configurées chacune à partir d'un noyau, d'une bobine et d'un bobinage sont disposées, centré autour d'un arbre rotatif, selon une forme annulaire le long de la surface périphérique interne d'un boîtier ; et un rotor qui est en face à face avec une surface de section transversale du noyau à travers un entrefer prédéterminé dans une direction radiale de l'arbre rotatif. Le boîtier a un trou d'extraction pour extraire un fil pour le rotor vers l'extérieur, et comporte une surface inclinée sur le côté inférieur du trou d'extraction du boîtier, de telle sorte que le côté périphérique interne de la surface inclinée devient inférieur. De plus, le boîtier a une partie d'évidement sous le trou d'extraction, la surface inclinée et la partie d'évidement étant intégrées. Par conséquent, lorsque le stator est formé par moulage, un moule en résine est amené à s'écouler facilement, et un endommagement du bobinage de l'unité de noyau peut être évité.
PCT/JP2017/003411 2017-01-31 2017-01-31 Machine électrique tournante du type à entrefer axial WO2018142465A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018565105A JPWO2018142465A1 (ja) 2017-01-31 2017-01-31 アキシャルギャップ型回転電機
PCT/JP2017/003411 WO2018142465A1 (fr) 2017-01-31 2017-01-31 Machine électrique tournante du type à entrefer axial
CN201780077026.8A CN110073578A (zh) 2017-01-31 2017-01-31 轴向间隙型旋转电机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/003411 WO2018142465A1 (fr) 2017-01-31 2017-01-31 Machine électrique tournante du type à entrefer axial

Publications (1)

Publication Number Publication Date
WO2018142465A1 true WO2018142465A1 (fr) 2018-08-09

Family

ID=63040351

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/003411 WO2018142465A1 (fr) 2017-01-31 2017-01-31 Machine électrique tournante du type à entrefer axial

Country Status (3)

Country Link
JP (1) JPWO2018142465A1 (fr)
CN (1) CN110073578A (fr)
WO (1) WO2018142465A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112436702B (zh) * 2020-12-28 2023-03-24 齐鲁工业大学 转子盘滚筒电机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09233738A (ja) * 1996-02-20 1997-09-05 Toshiba Corp 回転電機
JP2014217148A (ja) * 2013-04-25 2014-11-17 株式会社不二工機 ステータユニット
WO2015162819A1 (fr) * 2014-04-25 2015-10-29 株式会社日立産機システム Machine électrique rotative à entrefer axial

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5879121B2 (ja) * 2011-12-27 2016-03-08 株式会社日立産機システム アキシャルギャップ回転電機
CN205453447U (zh) * 2016-03-09 2016-08-10 湖北海山科技有限公司 导磁介质结构及具有该结构的定子盘和无铁芯盘式电机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09233738A (ja) * 1996-02-20 1997-09-05 Toshiba Corp 回転電機
JP2014217148A (ja) * 2013-04-25 2014-11-17 株式会社不二工機 ステータユニット
WO2015162819A1 (fr) * 2014-04-25 2015-10-29 株式会社日立産機システム Machine électrique rotative à entrefer axial

Also Published As

Publication number Publication date
JPWO2018142465A1 (ja) 2019-04-18
CN110073578A (zh) 2019-07-30

Similar Documents

Publication Publication Date Title
JP6790783B2 (ja) ステータユニット、モータ、およびステータユニットの製造方法
JP6294471B2 (ja) アキシャルエアギャップ型回転電機及び回転電機用ボビン
JP6294465B2 (ja) アキシャルエアギャップ型電動機及び電動機用ボビン
JP2011254677A (ja) モータのロータおよびその製造方法
JP2008131682A (ja) アキシャルエアギャップ型電動機
CN106464041A (zh) 轴向气隙型旋转电机
CN108604845B (zh) 轴向间隙型旋转电机
US20190199158A1 (en) Rotating Electrical Machine
JP6790782B2 (ja) ステータユニット、モータ、およびステータユニットの製造方法
JP5771958B2 (ja) ポンプ装置
US10886803B2 (en) Axial gap-type rotary electrical machine
JPWO2018138859A1 (ja) アキシャルギャップ型回転電機
US11296561B2 (en) Motor for ceiling fan
JP6771590B2 (ja) アキシャルギャップ型回転電機
WO2018138914A1 (fr) Machine électrique tournante du type à entrefer axial
WO2018142465A1 (fr) Machine électrique tournante du type à entrefer axial
US10862359B2 (en) Rotor, motor, air-conditioning apparatus, and method for manufacturing rotor
JP7543229B2 (ja) アキシャルギャップ型回転電機のステータコア、アキシャルギャップ型回転電機のステータ製造方法
JP2010088166A (ja) アキシャルエアギャップ型電動機
JP4739700B2 (ja) モータのロータ
KR20240014815A (ko) 영구자석 회전자 구조
JP2014121175A (ja) 電動機
WO2023007706A1 (fr) Rotor, moteur et procédé de fabrication de rotor
WO2015162825A1 (fr) Machine dynamo-électrique à entrefer axial et bobine de machine dynamo-électrique

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018565105

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17894700

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17894700

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载