WO2021240851A1 - ステータ及びモータ - Google Patents

ステータ及びモータ Download PDF

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Publication number
WO2021240851A1
WO2021240851A1 PCT/JP2020/046518 JP2020046518W WO2021240851A1 WO 2021240851 A1 WO2021240851 A1 WO 2021240851A1 JP 2020046518 W JP2020046518 W JP 2020046518W WO 2021240851 A1 WO2021240851 A1 WO 2021240851A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulator
phase winding
bus bar
coil unit
circumferential direction
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/046518
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
寿人 天野
充俊 棗田
英二 坂口
俊 櫻田
孝弘 佐藤
真三司 宇野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to CN202080101333.7A priority Critical patent/CN115668701B/zh
Priority to JP2022527487A priority patent/JP7364070B2/ja
Publication of WO2021240851A1 publication Critical patent/WO2021240851A1/ja
Priority to US17/994,037 priority patent/US12294270B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings

Definitions

  • the present invention relates to a stator and a motor.
  • the number of connection points between the winding and the bus bar can be suppressed to a small number.
  • the bus bar is provided above the axial direction of the winding, the armature tends to be thick in the axial direction.
  • the coil unit When defined as the circumferential direction, the coil unit includes a split core having teeth extending in the radial direction, an insulator mounted so as to overlap at least the teeth of the split core, and the insulator on the teeth of the split core.
  • the coil unit has a coil composed of windings wound through the coil, and the coil units are sequentially and repeatedly arranged in an annular shape along the circumferential direction, a first coil unit, a second coil unit, and a third coil unit.
  • the first coil unit includes a coil unit, the first coil unit has a first split core, a first insulator, and a first coil composed of U-phase windings, and the second coil unit has a second split.
  • a first groove, a second groove, and a third groove having different positions in the direction are provided, and the U-phase winding has a first end in the circumferential direction of the first groove of the first insulator.
  • the first end of the V-phase winding is derived toward one end and the second end is derived toward one end of the second groove of the first insulator in the circumferential direction.
  • the first end of the V-phase winding is the second end.
  • the second end of the insulator is derived toward one end in the circumferential direction of the second groove, and the second end is derived toward one end of the third groove of the second insulator in the circumferential direction.
  • the first end of the line is in the circumferential direction of the third groove of the third insulator.
  • the motor of the present invention is characterized by comprising the stator of the present invention and a rotor provided so as to face the inner peripheral surface of the stator.
  • the motor 1 has a rotor 2 and a stator 3a. More specifically, in the motor 1, the rotor 2 is located on the coaxial inner side and the stator 3a is located on the coaxial outer side with respect to the axis AX.
  • the axis AX corresponds to the rotation axis of the rotor 2.
  • the direction in which the axis of the stator extends is defined as the axial direction. Further, the direction orthogonal to the axial direction and facing the outer peripheral surface and the inner peripheral surface of the stator is defined as the radial direction. Further, the direction along the outer circumference of the stator when viewed from the axial direction is defined as the circumferential direction.
  • the axial direction, the radial direction, and the circumferential direction of the stator correspond to the axial direction, the radial direction, and the circumferential direction of the coil unit assembly described later, respectively.
  • the first insulator 50a may be mounted on the first split core 40a so that the two separation portions sandwich the first split core 40a in the circumferential direction. Further, the first insulator 50a may be separated into three or more separation portions in a state before being mounted on the first division core 40a.
  • the second split core 40b is exposed from the inner flange portion 52b and the outer flange portion 53b.
  • the end face 42ba of the two end faces facing each other in the circumferential direction is convex.
  • the end face 42bb is concave.
  • the outer end surface of the second insulator 50b on the side opposite to the teeth 41b in the radial direction is exposed on the outer peripheral surface of the coil unit assembly 10a.
  • on the outer end surface of the second insulator 50b on the side opposite to the teeth 41b in the radial direction here, on the outer end surface of the upper portion in the axial direction of the outer flange portion 53b, similarly to the first insulator 50a.
  • a first groove 55a, a second groove 55b, and a third groove 55c are provided.
  • the third coil unit 30c has a third split core 40c, a third insulator 50c, and a third coil 60c.
  • the state before and after the third insulator 50c is attached to the third split core 40c is the same as the state shown in FIGS. 5 and 6, respectively. That is, the third split core 40c has a tooth 41c extending in the radial direction. Further, the third insulator 50c has a tubular portion 51c, an inner flange portion 52c, and an outer flange portion 53c in a state after being mounted on the third split core 40c.
  • the tubular portion 51c overlaps the teeth 41c, more specifically, surrounds the teeth 41c.
  • the inner flange portion 52c extends in the axial direction and the circumferential direction from the inner end edge of the tubular portion 51c located on the inner peripheral surface side of the coil unit assembly 10a.
  • the outer flange portion 53c extends in the axial direction and the circumferential direction from the outer end edge of the tubular portion 51c located on the outer peripheral surface side of the coil unit assembly 10a.
  • the first split core 40a, the second split core 40b, and the third split core 40c are each formed by laminating, for example, electrical steel sheets in the axial direction.
  • the first divided core 40a, the second divided core 40b, and the third divided core 40c are sequentially and repeatedly arranged in an annular shape along the circumferential direction to form the stator core 45.
  • the first groove 55a, the second groove 55b, and the third groove 55c extend in the circumferential direction over the first insulator 50a, the second insulator 50b, and the third insulator 50c. .. That is, the positions of the first groove 55a in the axial direction are the same for the first insulator 50a, the second insulator 50b, and the third insulator 50c. Further, the positions of the second groove 55b in the axial direction are the same for the first insulator 50a, the second insulator 50b, and the third insulator 50c. Further, the positions of the third groove 55c in the axial direction are the same for the first insulator 50a, the second insulator 50b, and the third insulator 50c.
  • the first groove 55a, the second groove 55b, and the third groove 55c are arranged in order from the lower axial direction to the upper axial direction, and more specifically, from the stator core 45 side. , The positions in the axial direction are different from each other.
  • the first groove 55a, the second groove 55b, and the third groove 55c may be arranged in a different order from FIG. 13 as long as the positions in the axial direction are different from each other.
  • FIG. 14 is a schematic perspective view showing an enlarged area surrounded by a dotted line in FIG.
  • the third insulator 50c is provided with a wall portion in contact with the side opposite to the first insulator 50a of the second end 71cc of the W phase winding 70c in the circumferential direction, and the first insulator 50a is provided with a U phase in the circumferential direction. It is more preferable that a wall portion in contact with the third insulator 50c of the first end portion 71aa of the winding 70a is provided. As a result, it becomes easy to determine the lead-out position in the circumferential direction between the second end portion 71cab of the W-phase winding 70c adjacent to each other in the circumferential direction and the first end portion 71aa of the U-phase winding 70a.
  • the second insulator 50b is provided with the ceiling portion 58a and the floor portion 59a
  • the third insulator 50c is provided with the ceiling portion 58b and the floor portion 59b.
  • the U-phase winding 70a is positioned in the axial direction with respect to the second end portion 71ab of the U-phase winding 70a.
  • the derivation position of the second end portion 71ab in the axial direction can be easily determined.
  • the first insulator 50a is preferably provided with a ceiling portion and a floor portion as axial positioning means with respect to the second end portion 71ab of the U-phase winding 70a, but only one of the ceiling portion and the floor portion is provided. May be provided.
  • the first insulator 50a has a ceiling portion in contact with the upper side of the second end portion 71ab of the U-phase winding 70a in the axial direction and a floor portion in contact with the lower side of the second end portion 71ab of the U-phase winding 70a in the axial direction.
  • a floor portion in contact with the floor portion is provided on the second insulator 50b.
  • the outer ends of the first bus bar 20aa, the second bus bar 20ba, and the third bus bar 20ca, which are located on the side opposite to the inner peripheral surface of the coil unit assembly 10a in the radial direction, are coils. It is more preferable that the coil unit assembly 10a is located on the inner peripheral surface side of the coil unit assembly 10a rather than the outer end of the outer peripheral surface of the unit assembly 10a. Since the first bus bar 20aa, the second bus bar 20ba, and the third bus bar 20ca are provided in this way, the first bus bar 20aa, the second bus bar 20ba, and the third bus bar 20ca have the diameter of the coil unit assembly 10a. Since it is within the range of the length in the direction, the stator 3a can be sufficiently miniaturized in the radial direction. Further, since the motor 1 also has the stator 3a, it is possible to sufficiently reduce the size in the radial direction.
  • FIG. 17 is a schematic perspective view showing an enlarged area surrounded by a dotted line in FIG.
  • the third bus bar 20ca has a bent portion 21a and a bent portion 21b which are a pair of bent portions adjacent to each other in the circumferential direction.
  • the bent portion 21a is located on a surface of the wall portion 57a provided on the second insulator 50b on the side opposite to the second groove 55b in the axial direction.
  • the bent portion 21b is located on a surface of the wall portion 57b provided on the third insulator 50c on the side opposite to the second groove 55b in the axial direction.
  • the axial lengths of the bent portion 21a and the bent portion 21b are smaller than the axial lengths of the other portions.
  • the third bus bar 20ca may contain copper. As a result, the third bus bar 20ca has a low resistance, so that the W-phase drive current easily flows through the third bus bar 20ca.
  • Examples of the conductive spring material include iron, stainless steel, aluminum, and alloys containing at least one of these metals.
  • the first bus bar 20ab is provided in the first groove 55a. Further, the second bus bar 20bb is provided in the second groove 55b. Further, the third bus bar 20cc is provided in the third groove 55c.
  • the second end 71ab of the U-phase winding 70a By connecting the second end 71ab of the U-phase winding 70a to the terminal, the second end 71ab of the U-phase winding 70a is fixed to the terminal. Further, since the first end portion 71ba of the V-phase winding 70b is connected to the terminal, the first end portion 71ba of the V-phase winding 70b is fixed to the terminal. As a result, the connection between the first coil unit 30a and the second coil unit 30b becomes easy.
  • the second end 71ab of the U-phase winding 70a and the first end 71ba of the V-phase winding 70b adjacent to each other in the circumferential direction are fixed to the space between the first insulator 50a and the second insulator 50b. .. Even with such a fixing mode, the second end portion 71ab of the U-phase winding 70a and the first end portion 71ba of the V-phase winding 70b can be connected by, for example, soldering, welding, or the like, or the U-phase winding can be connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/JP2020/046518 2020-05-26 2020-12-14 ステータ及びモータ Ceased WO2021240851A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202080101333.7A CN115668701B (zh) 2020-05-26 2020-12-14 定子以及马达
JP2022527487A JP7364070B2 (ja) 2020-05-26 2020-12-14 ステータ及びモータ
US17/994,037 US12294270B2 (en) 2020-05-26 2022-11-25 Stator and motor having coil units annularly arranged

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-091535 2020-05-26
JP2020091535 2020-05-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/994,037 Continuation US12294270B2 (en) 2020-05-26 2022-11-25 Stator and motor having coil units annularly arranged

Publications (1)

Publication Number Publication Date
WO2021240851A1 true WO2021240851A1 (ja) 2021-12-02

Family

ID=78744166

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/046518 Ceased WO2021240851A1 (ja) 2020-05-26 2020-12-14 ステータ及びモータ

Country Status (4)

Country Link
US (1) US12294270B2 (https=)
JP (1) JP7364070B2 (https=)
CN (1) CN115668701B (https=)
WO (1) WO2021240851A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6893274B1 (ja) * 2020-07-03 2021-06-23 Dmg森精機株式会社 モータ
US20250015646A1 (en) * 2023-07-03 2025-01-09 Parker-Hannifin Corporation Electric Motor Stator with Enhanced Geometric Features for High Voltage Use

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006246594A (ja) * 2005-03-02 2006-09-14 Toyota Motor Corp 回転電機の配線部材
JP2013110811A (ja) * 2011-11-18 2013-06-06 Jtekt Corp 電動モータ
JP2016013053A (ja) * 2014-06-04 2016-01-21 アスモ株式会社 電機子及びモータ

Family Cites Families (17)

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JP2015006030A (ja) * 2013-06-19 2015-01-08 本田技研工業株式会社 回転電機
JP2018137959A (ja) * 2017-02-23 2018-08-30 本田技研工業株式会社 ステータおよびコイル固定具
EP3687043B1 (en) * 2017-09-20 2024-03-13 Panasonic Intellectual Property Management Co., Ltd. Insulator, and stator and motor comprising same
US11469638B2 (en) * 2018-03-22 2022-10-11 Mitsubishi Electric Corporation Stator insulating members for rotary electric machine
JP2019180216A (ja) * 2018-03-30 2019-10-17 株式会社豊田自動織機 回転電機のステータ、及び回転電機
DE112019002617T5 (de) * 2018-05-22 2021-03-25 Mitsubishi Electric Corporation Schichtkern für eine rotierende elektrische Maschine und rotierende elektrische Maschine
US11239719B2 (en) * 2019-02-28 2022-02-01 Murata Manufacturing Co., Ltd. Transducer for converting between electrical energy and mechanical energy
JP7196691B2 (ja) * 2019-03-05 2022-12-27 株式会社デンソー ステータ
KR102874999B1 (ko) * 2019-12-18 2025-10-22 엘지이노텍 주식회사 모터
JP2022050992A (ja) * 2020-09-18 2022-03-31 株式会社小松製作所 ステータ及びモータ
WO2022085780A1 (ja) * 2020-10-23 2022-04-28 ミネベアミツミ株式会社 モータ
DE102020131417A1 (de) * 2020-11-26 2022-06-02 Nidec Motors & Actuators (Germany) Gmbh Stator mit Drahtführung aufweisendem Isolator
DE102020131418A1 (de) * 2020-11-26 2022-06-02 Nidec Motors & Actuators (Germany) Gmbh Stator mit Drahtführung aufweisendem Isolator
CN116830427A (zh) * 2021-03-01 2023-09-29 株式会社电装 旋转电机
EP4412050A4 (en) * 2021-09-27 2024-12-25 Denso Corporation ELECTRIC LATHE
US12088164B2 (en) * 2022-03-10 2024-09-10 Aichi Electric Co., Ltd. Motor stator having electrical insulators with overlapping parts
JP2023141012A (ja) * 2022-03-23 2023-10-05 愛知電機株式会社 絶縁体、固定子および電動機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006246594A (ja) * 2005-03-02 2006-09-14 Toyota Motor Corp 回転電機の配線部材
JP2013110811A (ja) * 2011-11-18 2013-06-06 Jtekt Corp 電動モータ
JP2016013053A (ja) * 2014-06-04 2016-01-21 アスモ株式会社 電機子及びモータ

Also Published As

Publication number Publication date
US20230085682A1 (en) 2023-03-23
JP7364070B2 (ja) 2023-10-18
CN115668701A (zh) 2023-01-31
JPWO2021240851A1 (https=) 2021-12-02
CN115668701B (zh) 2025-05-16
US12294270B2 (en) 2025-05-06

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