WO2014068695A1 - 回転電機のコイルおよび回転電機 - Google Patents

回転電機のコイルおよび回転電機 Download PDF

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Publication number
WO2014068695A1
WO2014068695A1 PCT/JP2012/078141 JP2012078141W WO2014068695A1 WO 2014068695 A1 WO2014068695 A1 WO 2014068695A1 JP 2012078141 W JP2012078141 W JP 2012078141W WO 2014068695 A1 WO2014068695 A1 WO 2014068695A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
rotating electrical
electrical machine
end portion
coil end
Prior art date
Application number
PCT/JP2012/078141
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佳明 橘田
篤史 坂上
祐太郎 白井
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 PCT/JP2012/078141 priority Critical patent/WO2014068695A1/ja
Priority to CN201280074430.7A priority patent/CN104412494B/zh
Priority to JP2014544115A priority patent/JP5769890B2/ja
Publication of WO2014068695A1 publication Critical patent/WO2014068695A1/ja

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    • 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
    • H02K3/18—Windings for salient poles

Definitions

  • the present invention relates to a rotating electric machine, and more particularly to an improvement of an edgewise coil that constitutes a stator thereof.
  • the present invention has been made to solve such a problem, and is formed inside the coil bending portion by shifting the coil bending position not only on the coil end side of the edgewise coil but also on the non-coil end side.
  • the purpose of this is to eliminate the overlapping of the bulging portions, and as a result, to reduce the size of the edgewise coil and improve the heat dissipation of the coil.
  • the bending position of the edgewise coil is different between the odd-numbered conductor and the even-numbered conductor on the coil end side, and also on the non-coil end side, The bending position of adjacent coils is changed in the coil stacking direction.
  • the present invention it is possible to more reliably avoid the overlapping of the bulging portions of the inner circumference of the conductor due to edgewise bending by changing the bending position of the edgewise coil not only on the coil end side but also on the non-coil end side. Therefore, it is possible to reduce the size of the winding and improve the heat dissipation.
  • FIG. 3 is a schematic diagram showing a cross section taken along line XX and line YY in FIG. 2. It is the schematic which shows the rotary electric machine to which the coil which concerns on Embodiment 1 of this invention is applied.
  • FIG. 1 is a sectional view schematically showing a rotating electrical machine to which the present invention is applied.
  • the rotating electrical machine has a cylindrical center frame 1 and a front frame 2 and a rear frame 3 attached to both side surfaces of the center frame 1 on the load side and the anti-load side.
  • a stator 4 formed in an annular shape is fitted to the peripheral surface.
  • a bus bar 5 that supplies power to each phase of the UVW is attached to the end face on the opposite side of the stator 4 via a bus bar holder.
  • front frame 2 and the rear frame 3 are provided with a load-side bearing 6 and an anti-load-side bearing 7, and the rotation shaft 8 is supported by these bearings 6, 7 and is fixed to the rotation shaft 8.
  • a rotor 9 is arranged to face the stator 4 and is rotatably supported.
  • FIG. 2 is a schematic diagram showing a partial configuration of the stator 4 according to the first embodiment of the present invention applied to such a rotating electric machine.
  • an iron core 10 of a stator 4 is formed by laminating thin steel plates having magnetism such as electromagnetic steel plates, and a stator coil 13 is wound around the iron core 10 via a coil bobbin 11 and insulating paper 12.
  • the strand of the stator coil 13 is a strip-shaped copper wire having a large width ratio with respect to the thickness, and the surface thereof is covered with an insulator.
  • a so-called edgewise type coil is formed by bending the wire.
  • the coil 13 has bent portions at four corners and is wound in a substantially quadrangular shape, and includes a coil end portion 13A perpendicular to the rotating shaft 8 of the rotating electrical machine and a non-coil end portion 13B parallel to the rotating shaft. have.
  • the stator 4 is formed by fitting a plurality of coils 13 wound in such an edgewise manner into the iron core 10 in an annular shape.
  • the edgewise type coil is generally processed by the following process. That is, as shown in FIG. 3 (a), the strip-like strand 20 is brought into contact with and moved between the fixed support member 21 and the movable member 22, and as shown in FIG. 3 (b). In addition, by moving the movable member 22 along the trajectory A in a state where one is fixedly held by the fixing member 23, a bent portion is formed so as to be wound around the support member 21. Next, as shown in FIG. 3 (c), the movable member 22 is returned to the original position, the fixing member 23 is released and the wire 20 is sent out in the direction of the arrow in the figure, and then the next bending point. When reaching the support member 21, the feeding is stopped and the above-described bending process is performed, and the edgewise coil 13 having a predetermined number of turns is formed by repeating such a process.
  • the coil bend portion 13A side of the edgewise coil 13 is arranged on the first bend portion and the second bend portion laminated adjacent to the first bend portion.
  • the bending position of the conductor is changed so that the height of the winding is staggered for each turn, and the non-coil end portion 13B side of the winding is bent from the center of the rotor 9 toward the radially outer side. Is changed so as to spread in a tapered shape. That is, the shape at the end of winding on the coil end portion 13A side (XX cross section in FIG. 2) is almost the same height between the odd-numbered turns as shown in FIG. 4 (a).
  • the even-numbered turns are wound at substantially the same height different from the odd-numbered heights, while the shape on the non-coil end portion 13B side (YY cross section in FIG. 2) is shown in FIG. As shown to b), it is comprised so that it may spread sequentially.
  • the coil bending position on the non-coil end portion 13B side is shifted in a taper shape extending radially outward from the center of the rotary shaft 8, and the iron core 10 is similarly formed in a taper shape.
  • the inner peripheral surface of the winding can be brought into contact with the iron core 10 via the insulating paper 12, and the thickness of the coil 13 can be effectively reduced without impairing the heat dissipation of the coil 13.
  • a passage 1A for circulating cooling water is provided in the center frame 1 as shown in FIG. 5, and the heat generated in the coil 13 is generated by the coil 13, the stator core 10, the frame 1, It is suitable for a rotating electrical machine having a water cooling structure that discharges to the outside through a heat transfer path of cooling water. That is, by forming the non-coil end portion 13B in a tapered shape, the inner circumference of the tapered coil is fitted into the tapered stator core 10, so that the coil 13 and the stator core 10 can be reliably brought into contact with each other. Furthermore, the coil cooling performance can be further improved by avoiding the overlapping of the bent bulge portions and improving the adhesion between the coils.
  • the coil is wound in advance with the non-coil end side aligned, and is fitted into the stator core. Therefore, it is necessary to set a gap between the coil inner diameter and the stator core. The heat transfer to the core will be reduced.
  • FIG. FIG. 6 shows a coil of a rotating electrical machine according to Embodiment 2 of the present invention.
  • the non-coil end portion 13B in addition to the coil end portion 13A, also has the odd-numbered turns set to substantially the same height, and the even-numbered turns set to the odd-numbered height. It is configured as different and almost the same height. Even with this configuration, it is possible to avoid the overlapping of the bent bulges, and the same effect as in the first embodiment can be obtained.
  • the second embodiment is suitable for an oil cooling structure used in an electric vehicle or a hybrid electric vehicle.
  • FIG. 7 shows a schematic structure of such a rotating electrical machine.
  • an oil pipe 14 is provided on the front frame 2 to eject oil as a refrigerant from the coil end portion 13A side in the axial direction of the rotating electrical machine. It is comprised as follows. With this configuration, the oil flows along the gap between the coil end portions 13B formed in the axial direction of the rotating electrical machine as indicated by the arrows in FIG. It can be taken in between the plurality of coils 13.
  • the stator 4 that is long in the rotating shaft direction of the rotating electrical machine, a large contact area with the oil can be taken, and the stator 13 penetrates in the rotating shaft direction of the rotating electrical machine between adjacent stator coils 13.
  • a gap can be provided, and a high space factor and high heat dissipation can be achieved at the same time, in addition to avoiding overlapping of the bent bulge portions of the windings.
  • the oil pipe 14 may be provided on the rear frame 3 side or on both sides of the front frame 2 and the rear frame 3. Further, instead of the oil pipe 14, oil may be stored inside the rotating electrical machine, and the oil may be scraped up by the rotor and supplied to the coil end portion. Oil can be supplied to the inside of the coil through the gap between them, and high heat dissipation can be ensured.
  • FIG. 8 is a schematic configuration diagram showing a coil of the rotating electrical machine according to the third embodiment of the present invention.
  • the coil height of the non-coil end portion 13 ⁇ / b> B is configured to have a different taper shape that extends radially outward from the center of the rotation axis in both odd and even numbers.
  • the clearance gap penetrated in the rotating shaft direction of the rotary electric machine can be provided between the coils of the adjacent stator, which is suitable for the rotary electric machine having an oil cooling structure. That is, by making the outer shape of the winding on the non-coil end 13B side tapered, a winding with a higher space factor than that of the second embodiment can be achieved.
  • Embodiment 4 Using the edgewise type coil 13 described in the first to third embodiments as described above, this coil portion is molded and fixed with a resin having excellent thermal conductivity, and is further fitted into the stator core 10. Even when it is molded, the same effect can be obtained in miniaturization in the coil stacking direction and increase in the heat radiation area.
  • each embodiment can be appropriately modified or omitted within the scope of the invention.
  • the present invention can improve the size and heat dissipation of the edgewise coil, and is suitable as a rotating electric machine used in automobiles and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
PCT/JP2012/078141 2012-10-31 2012-10-31 回転電機のコイルおよび回転電機 WO2014068695A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2012/078141 WO2014068695A1 (ja) 2012-10-31 2012-10-31 回転電機のコイルおよび回転電機
CN201280074430.7A CN104412494B (zh) 2012-10-31 2012-10-31 旋转电机的线圈以及旋转电机
JP2014544115A JP5769890B2 (ja) 2012-10-31 2012-10-31 回転電機のコイルおよび回転電機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/078141 WO2014068695A1 (ja) 2012-10-31 2012-10-31 回転電機のコイルおよび回転電機

Publications (1)

Publication Number Publication Date
WO2014068695A1 true WO2014068695A1 (ja) 2014-05-08

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PCT/JP2012/078141 WO2014068695A1 (ja) 2012-10-31 2012-10-31 回転電機のコイルおよび回転電機

Country Status (3)

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JP (1) JP5769890B2 (zh)
CN (1) CN104412494B (zh)
WO (1) WO2014068695A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018002105A (ja) * 2016-07-08 2018-01-11 Ntn株式会社 電動式直動アクチュエータ
WO2022239561A1 (ja) * 2021-05-12 2022-11-17 株式会社Top コイル及び回転機

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020017143A1 (ja) * 2018-07-18 2020-01-23 パナソニックＩｐマネジメント株式会社 モータ
JP7442050B2 (ja) * 2019-06-17 2024-03-04 パナソニックＩｐマネジメント株式会社 コイル及びそれを備えたステータ、ロータ、モータ並びにコイルの製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005304244A (ja) * 2004-04-15 2005-10-27 Toyota Motor Corp 回転電機のコイル、回転電機およびコイルの製造方法
JP2008228435A (ja) * 2007-03-12 2008-09-25 Toyota Motor Corp 平角材のエッジワイズ曲げ加工方法、及び加工装置
JP2009283591A (ja) * 2008-05-21 2009-12-03 Toyota Motor Corp 巻線方法、巻線装置、及び固定子

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026739B2 (en) * 2003-05-23 2006-04-11 Honda Motor Co., Ltd Stator and insulating bobbin and a manufacturing method of the stator
JP5515656B2 (ja) * 2009-11-12 2014-06-11 株式会社明電舎 集中巻きモータの絶縁構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005304244A (ja) * 2004-04-15 2005-10-27 Toyota Motor Corp 回転電機のコイル、回転電機およびコイルの製造方法
JP2008228435A (ja) * 2007-03-12 2008-09-25 Toyota Motor Corp 平角材のエッジワイズ曲げ加工方法、及び加工装置
JP2009283591A (ja) * 2008-05-21 2009-12-03 Toyota Motor Corp 巻線方法、巻線装置、及び固定子

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018002105A (ja) * 2016-07-08 2018-01-11 Ntn株式会社 電動式直動アクチュエータ
US10886808B2 (en) 2016-07-08 2021-01-05 Ntn Corporation Electric linear actuator
WO2022239561A1 (ja) * 2021-05-12 2022-11-17 株式会社Top コイル及び回転機
JPWO2022239561A1 (zh) * 2021-05-12 2022-11-17
JP7380997B2 (ja) 2021-05-12 2023-11-15 株式会社Top コイル及び回転機

Also Published As

Publication number Publication date
CN104412494A (zh) 2015-03-11
JPWO2014068695A1 (ja) 2016-09-08
CN104412494B (zh) 2017-03-08
JP5769890B2 (ja) 2015-08-26

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