JP2012100433A - Conductor wire including insulative coating and rotating electric machine - Google Patents

Conductor wire including insulative coating and rotating electric machine Download PDF

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JP2012100433A
JP2012100433A JP2010245885A JP2010245885A JP2012100433A JP 2012100433 A JP2012100433 A JP 2012100433A JP 2010245885 A JP2010245885 A JP 2010245885A JP 2010245885 A JP2010245885 A JP 2010245885A JP 2012100433 A JP2012100433 A JP 2012100433A
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conductor
insulating film
coil winding
rotor
coil
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Satoru Takasaki
哲 高崎
Munehiro Kamiya
宗宏 神谷
Hiroshi Kaneiwa
浩志 金岩
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Toyota Motor Corp
トヨタ自動車株式会社
Denso Corp
株式会社デンソー
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Abstract

PROBLEM TO BE SOLVED: To efficiently cool a coil winding in a conductor wire including an insulative coating for the coil winding.SOLUTION: One coil winding 50 is inserted into a slot 38 of a stator core 32 of a rotating electric machine in a sequentially stacked state. The one coil winding 50 includes: a conductor part 52 comprising a copper wire, etc.; and an insulative coating part 54 located on the conductor part 52 and comprising thermoplastic resin, such as polyamide (PA). Recessed grooves 56, 58 for refrigerant flowing are provided on the outer surface of the insulative coating part 54. When two coil windings 50 are superposed in the slot 38, the two recessed grooves 56, 58 become an integral hole 60 and a refrigerant can flow inside the hole 60.

Description

本発明は、絶縁性皮膜付導線及び回転電機に係り、特に、導体部の上に絶縁性皮膜部を形成して構成されるコイル巻線用の絶縁性皮膜付導線及びこれを用いる回転電機に関する。   The present invention relates to a conductive wire with an insulating film and a rotating electric machine, and more particularly, to a conductive wire with an insulating film for coil winding formed by forming an insulating film portion on a conductor and a rotating electric machine using the same. .
回転電機の固定子には、固定子巻線あるいは電機子巻線と呼ばれるコイル巻線が配置される。固定子は、周方向に沿って複数のティースと呼ばれる突出部が配置されるステータコアと、巻線部とを含んで構成される。巻線部は、ステータコアの隣接するティースの間のスロットと呼ばれる空間にコイル巻線を挿入し、ティースに所定の方式でこのコイル巻線を巻回するスロット巻線と、巻回が終るとそのスロットからステータコアの外に引き出されるコイルエンド部とを含む。   Coil windings called stator windings or armature windings are arranged on the stator of the rotating electric machine. The stator includes a stator core in which projecting portions called teeth are arranged along the circumferential direction, and a winding portion. The winding portion includes a slot winding in which a coil winding is inserted into a space between adjacent teeth of the stator core, and the coil winding is wound around the teeth in a predetermined manner. And a coil end portion drawn out of the stator core from the slot.
回転電機に用いられるコイル巻線は、回転電機の駆動に伴って電流が流されるので発熱する。コイル巻線の発熱によって回転電機の温度も上昇し、その性能が温度によって変化するので、回転電機の冷却が行なわれる。   The coil winding used in the rotating electrical machine generates heat because a current flows as the rotating electrical machine is driven. The temperature of the rotating electrical machine also rises due to the heat generated by the coil winding, and its performance changes depending on the temperature, so that the rotating electrical machine is cooled.
例えば、特許文献1には、ステータのスロット内に冷媒を流す回転電機として、ステータのスロットのロータ側開口部をアンダープレートで閉塞し、スロットの中央部に通路断面積調整部材を配置する構成が開示されている。これによってスロット内の冷媒通路断面積を小さくして冷媒速度を速くできるので、冷却効率を高めることができると述べられている。   For example, Patent Document 1 discloses a configuration in which a rotor-side opening of a stator slot is closed with an under plate and a passage cross-sectional area adjusting member is arranged at the center of the slot as a rotating electrical machine that flows a refrigerant into the stator slot. It is disclosed. It is stated that this makes it possible to increase the cooling speed by reducing the refrigerant passage cross-sectional area in the slot and increasing the refrigerant speed.
特許文献2には、回転電機機械用巻線として、巻線を形成し電流により発熱する線材の軸方向に沿った中空部と、中空部から線材外表面に向かって開口する連通孔を設ける構造、線材の軸方向に沿って線材の外表面にらせん溝等の溝を形成する構造が開示されている。これらの溝を用いて冷却媒体を流し、発熱する線材を直接冷却し、ロータやステータを効率よく冷却できると述べられている。   Patent Document 2 discloses a structure in which, as a winding for a rotating electrical machine, a hollow portion is formed along the axial direction of a wire that forms a winding and generates heat by an electric current, and a communication hole that opens from the hollow portion toward the outer surface of the wire. The structure which forms grooves, such as a spiral groove, in the outer surface of a wire along the axial direction of a wire is disclosed. It is stated that a cooling medium can be flowed using these grooves to directly cool the heat generating wire, thereby cooling the rotor and the stator efficiently.
特許文献3には、絶縁外被ケーブルが固定子のスロットに配置される回転電機において、スロット内に配置される複数の絶縁外被ケーブルのそれぞれの間に軸方向に延びる冷却管を配置する構成が開示されている。   In Patent Document 3, in a rotating electrical machine in which an insulated jacket cable is disposed in a slot of a stator, a configuration in which a cooling pipe extending in the axial direction is disposed between each of a plurality of insulated jacket cables disposed in the slot. Is disclosed.
特開2002−186205号公報JP 2002-186205 A 特開平6−150739号公報Japanese Patent Laid-Open No. 6-150739 特開平11−355992号公報JP-A-11-355992
回転電機を冷却するには、発熱する導体部に冷媒通路を設けて、その冷媒通路に冷媒を流せば、最も冷却効率がよくなることが考えられる。しかし、導体部に冷媒通路を設けると、導体部の断面積が減少する。導体部の断面積を変えないで導体部に冷媒通路を設けると、導体部の外径が大きくなり、回転電機の大型化を招く。   In order to cool the rotating electrical machine, it is conceivable that the cooling efficiency is most improved by providing a refrigerant passage in the heat generating conductor portion and flowing the refrigerant through the refrigerant passage. However, when the refrigerant passage is provided in the conductor portion, the cross-sectional area of the conductor portion is reduced. If the refrigerant passage is provided in the conductor portion without changing the cross-sectional area of the conductor portion, the outer diameter of the conductor portion is increased, leading to an increase in size of the rotating electrical machine.
本発明の目的は、導体部の断面積を変えることなく、効率よくコイル巻線を冷却できる絶縁性皮膜付導線及びこれを用いる回転電機を提供することである。   An object of the present invention is to provide a conductive wire with an insulating coating that can efficiently cool a coil winding without changing the cross-sectional area of a conductor portion, and a rotating electrical machine using the same.
本発明に係る絶縁性皮膜付導線は、巻線枠に順次巻線されるコイル巻線用の絶縁性皮膜付導線であって、導体部と、導体部の上に設けられ熱可塑性樹脂で構成される絶縁皮膜部と、外表面に軸方向に延びる冷媒流通用凹部溝と、を備えることを特徴とする。   The conductive wire with an insulating film according to the present invention is a conductive wire with an insulating film for coil winding that is sequentially wound around a winding frame, and is composed of a conductor portion and a thermoplastic resin provided on the conductor portion. And a coolant circulation recess groove extending in the axial direction on the outer surface.
また、本発明に係る絶縁性皮膜付導線において、絶縁皮膜部は、膜厚の厚い凸部と、膜厚の薄い凹部とを有することが好ましい。   Moreover, in the conductor with an insulating film according to the present invention, the insulating film part preferably has a thick convex part and a thin concave part.
また、本発明に係る絶縁性皮膜付導線において、導体部は、断面形状が凹凸形状を有することが好ましい。   Moreover, in the conductor with an insulating film according to the present invention, the conductor portion preferably has an uneven shape in cross section.
また、本発明に係る絶縁性皮膜付導線において、冷媒流通用凹部溝は、2つのコイル巻線を重ね合わせたときに、一体化して1つの冷媒流通穴を形成するように、コイル巻線の断面形状について一方側側面とそれに背向する他方側側面のそれぞれの同じ位置に設けられることが好ましい。   Further, in the conductive wire with an insulating film according to the present invention, the concave groove for refrigerant circulation is integrated with the coil winding so as to form one refrigerant circulation hole when the two coil windings are overlapped. The cross-sectional shape is preferably provided at the same position on each of the one side surface and the other side surface facing it.
また、本発明に係る回転電機は、ロータ軸に取り付けられる回転子であるロータと、ロータの外周側に設けられ、コイル巻線用の絶縁性皮膜付導線を含む固定子であるステータと、を備え、絶縁性皮膜付導線は、導体部と、導体部の上に設けられ熱可塑性樹脂で構成される絶縁皮膜部と、外表面に軸方向に延びる冷媒流通用凹部溝と、を備えることを特徴とする。   Further, a rotating electrical machine according to the present invention includes a rotor that is a rotor attached to a rotor shaft, and a stator that is provided on the outer peripheral side of the rotor and that is a stator including a conductive wire with an insulating film for coil winding. The conductor with insulation film includes a conductor part, an insulation film part formed on the conductor part and made of a thermoplastic resin, and a recess groove for refrigerant circulation extending in the axial direction on the outer surface. Features.
上記構成により、コイル巻線用の絶縁性皮膜付導線は、導体部の上に設けられ熱可塑性樹脂で構成される絶縁皮膜部の外表面に軸方向に延びる冷媒流通用凹部溝を備える。これにより、導体部に穴を設ける等によって導体部の断面積を変える方法によらず、効率よくコイル巻線を冷却できる。   With the above configuration, the conductive wire with an insulating film for coil winding is provided with a concave groove for circulating coolant extending in the axial direction on the outer surface of the insulating film portion that is provided on the conductor portion and is made of a thermoplastic resin. Thereby, the coil winding can be efficiently cooled regardless of a method of changing the cross-sectional area of the conductor part by providing a hole in the conductor part.
また、絶縁性皮膜付導線において、絶縁皮膜部は、膜厚の厚い凸部と、膜厚の薄い凹部とを有する。ここでは、絶縁皮膜部に凹凸部を設けるので、その凹部を冷媒流通用凹部溝として用いることができる。   Moreover, in the conductor with an insulating coating, the insulating coating has a thick convex portion and a thin concave portion. Here, since the concave and convex portions are provided in the insulating film portion, the concave portions can be used as the refrigerant flow concave grooves.
また、絶縁性皮膜付導線において、導体部は、断面形状が凹凸形状を有するので、絶縁皮膜部を均一な厚さとして、一様な絶縁性能を確保しながら、外表面に現れる凹凸の凹部を冷媒流通用凹部溝として用いることができる。   In addition, in the conductor with an insulating film, since the cross-sectional shape of the conductor portion has an uneven shape, the uneven portion appearing on the outer surface is formed while ensuring uniform insulation performance with a uniform thickness of the insulating film portion. It can be used as a concave groove for refrigerant circulation.
また、絶縁性皮膜付導線において、冷媒流通用凹部溝は、2つのコイル巻線を重ね合わせたときに、一体化して1つの冷媒流通穴を形成するように、コイル巻線の断面形状について一方側側面とそれに背向する他方側側面のそれぞれの同じ位置に設けられるので、重ね合わされたときでも効率的にコイル巻線を冷却できる。   Also, in the conductor with insulating film, the concave groove for refrigerant circulation is one of the cross-sectional shapes of the coil windings so that when two coil windings are overlapped, they are integrated to form one refrigerant circulation hole. Since it is provided at the same position on each of the side surface and the other side surface facing it, the coil winding can be efficiently cooled even when they are superposed.
本発明に係る実施の形態のコイル巻線用絶縁皮膜付導線が用いられる回転電機の様子を示す図である。It is a figure which shows the mode of the rotary electric machine in which the conducting wire with the insulation film for coil windings of embodiment which concerns on this invention is used. 図1における固定子を抜き出して示す図である。It is a figure which extracts and shows the stator in FIG. 図2におけるA部を内径側から見た様子を示す図である。It is a figure which shows a mode that the A section in FIG. 2 was seen from the internal diameter side. 図3のS−S線に沿った断面の様子を示す図である。It is a figure which shows the mode of the cross section along the SS line | wire of FIG. 本発明に係る実施の形態のコイル巻線用絶縁皮膜付導線の断面形状を説明する図である。It is a figure explaining the cross-sectional shape of the conducting wire with the insulation film for coil windings of the embodiment concerning the present invention. 本発明に係る実施の形態のコイル巻線用絶縁皮膜付導線の別の断面形状を説明する図である。It is a figure explaining another cross-sectional shape of the conducting wire with the insulation film for coil windings of the embodiment concerning the present invention. 本発明に係る実施の形態のコイル巻線用絶縁皮膜付導線のさらに別の断面形状を説明する図である。It is a figure explaining another cross-sectional shape of the conducting wire with the insulation film for coil windings of the embodiment concerning the present invention. 本発明に係る実施の形態のコイル巻線用絶縁皮膜付導線の他の断面形状を説明する図である。It is a figure explaining the other cross-sectional shape of the conducting wire with the insulation film for coil windings of embodiment which concerns on this invention.
以下に図面を用いて本発明に係る実施の形態につき詳細に説明する。以下では、回転電機として、永久磁石型ロータとステータ巻線を有するステータとの組み合わせを説明するが、ロータは永久磁石型以外の形式でもよく、例えば、リラクタンス型ロータであってもよい。また、以下では、ロータコアもステータコアも電磁鋼板を積層して形成されたものを説明するが、電磁鋼板以外の材料であってもよく、例えば、粉末成形等で形成されるものであってもよい。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, a combination of a permanent magnet type rotor and a stator having a stator winding will be described as a rotating electric machine, but the rotor may be of a type other than the permanent magnet type, for example, a reluctance type rotor. In the following, the rotor core and the stator core will be described by laminating electromagnetic steel sheets, but materials other than the electromagnetic steel sheets may be used, for example, powder molding or the like may be used. .
以下では、絶縁性皮膜部は、導体部の上に熱可塑性樹脂で形成されるものとして説明するが、熱可塑性樹脂を複数層で構成されるものとしてもよく、また、導体部と熱可塑性樹脂との間にエナメル層等の中間層を設けるものとしてもよく、熱可塑性樹脂の表面に接着層を設けるものとしてもよい。   In the following description, the insulating film portion is described as being formed of a thermoplastic resin on the conductor portion, but the thermoplastic resin may be composed of a plurality of layers, and the conductor portion and the thermoplastic resin may be formed. An intermediate layer such as an enamel layer may be provided therebetween, and an adhesive layer may be provided on the surface of the thermoplastic resin.
以下では、全ての図面において同様の要素には同一の符号を付し、重複する説明を省略する。また、本文中の説明においては、必要に応じそれ以前に述べた符号を用いるものとする。   Below, the same code | symbol is attached | subjected to the same element in all the drawings, and the overlapping description is abbreviate | omitted. In the description in the text, the symbols described before are used as necessary.
図1は、回転電機10の構成を示す図である。回転電機10は三相同期型であって、モータケース12に出力軸であるロータ軸14が支持され、ロータ軸14に回転子であるロータ20が固定され、ロータ20の外周側に固定子であるステータ30が配置される。   FIG. 1 is a diagram illustrating a configuration of the rotating electrical machine 10. The rotating electrical machine 10 is a three-phase synchronous type, and a rotor shaft 14 that is an output shaft is supported on a motor case 12, a rotor 20 that is a rotor is fixed to the rotor shaft 14, and a stator is provided on the outer peripheral side of the rotor 20. A certain stator 30 is arranged.
ロータ20は、上記のようにロータ軸14に固定された回転子で、電磁鋼板を積層して形成されるロータコア22と、ロータコア22に埋め込み型で配置される複数の永久磁石24を含んで構成される。なお、永久磁石24は、ロータコア22に埋め込まずに、ステータ30に直接向かい合うように配置されてもよい。   The rotor 20 is a rotor fixed to the rotor shaft 14 as described above, and includes a rotor core 22 formed by stacking electromagnetic steel plates, and a plurality of permanent magnets 24 arranged in an embedded manner in the rotor core 22. Is done. The permanent magnet 24 may be arranged so as to face the stator 30 directly without being embedded in the rotor core 22.
ステータ30は、ロータ20に対し回転磁界を与える機能を有し、この回転磁界とロータ20の永久磁石24との電磁的協働作用によって、ロータ20に回転エネルギを与える固定子である。ステータ30は、電磁鋼板を積層して形成されるステータコア32と、ステータコアに巻回される巻線部とで構成される。   The stator 30 has a function of applying a rotating magnetic field to the rotor 20, and is a stator that applies rotational energy to the rotor 20 by an electromagnetic cooperative action between the rotating magnetic field and the permanent magnet 24 of the rotor 20. Stator 30 includes a stator core 32 formed by laminating electromagnetic steel plates and a winding portion wound around the stator core.
ステータコア32は、円環状の部材で、内周側に、周方向に沿って複数のティースと呼ばれる突出部が配置される。巻線部は、ステータコア32の隣接するティースの間のスロットと呼ばれる空間にコイル巻線を挿入し、ティースに所定の方式でこのコイル巻線を巻回するスロット巻線と、巻回が終るとそのスロットからステータコア32の外に引き出されるコイルエンド部とを含んで構成される。図1では、ステータコア32の内部にスロット巻線が隠れているので、コイルエンド部34のみが図示されている。   The stator core 32 is an annular member, and a plurality of protruding portions called teeth are arranged on the inner peripheral side along the circumferential direction. The winding portion inserts a coil winding into a space called a slot between adjacent teeth of the stator core 32, and winds the coil winding around the teeth in a predetermined manner, and when the winding is finished. And a coil end portion drawn out of the stator core 32 from the slot. In FIG. 1, since the slot winding is hidden inside the stator core 32, only the coil end portion 34 is shown.
図2は、図1のステータ30の部分を抜き出して斜視図で示す図である。ここでは、ステータコア32の内周側に複数のティース36が示され、隣接するティース36の間の隙間空間であるスロット38が僅かに示され、スロット38からステータコア32の軸方向の両側に引き出されたコイル巻線がコイルエンド部34を形成する様子が示される。   FIG. 2 is a perspective view of the stator 30 shown in FIG. Here, a plurality of teeth 36 are shown on the inner peripheral side of the stator core 32, a slot 38 that is a gap space between adjacent teeth 36 is shown slightly, and the slots 38 are pulled out to both sides in the axial direction of the stator core 32. The manner in which the coil winding forms the coil end 34 is shown.
図3は、図2のA部を内径側から見た様子を示す図、図4は、図3のS−S線に沿った断面の様子を示す図である。図3では、ステータコア32がティース36として示され、スロット38がその中に配置される絶縁シート40が見える様子が示される。図4に示されるように、この絶縁シートの中のコイル巻線50の部分が、スロット巻線33に相当する。図3では、ステータコア32の上部側および下部側のコイルエンド部34のそれぞれにおいて、2つのコイル巻線50が重なりあう様子が示されている。   FIG. 3 is a diagram illustrating a state where the portion A in FIG. 2 is viewed from the inner diameter side, and FIG. 4 is a diagram illustrating a cross-sectional state along the line SS in FIG. In FIG. 3, the stator core 32 is shown as a tooth 36, and the slot 38 is shown showing an insulating sheet 40 disposed therein. As shown in FIG. 4, the portion of the coil winding 50 in the insulating sheet corresponds to the slot winding 33. FIG. 3 shows a state in which the two coil windings 50 overlap each other in the upper and lower coil end portions 34 of the stator core 32.
ステータコア32のスロット38内では、図4に示されるように、1本のコイル巻線50が順次積み重ねられて挿入される。つまり、回転電機10の三相の同じ相のコイル巻線50が隣接して積み重ねられて配置される。1本のコイル巻線50は、銅線等で構成される導体部52と、その上に、ポリアミド(PA)等の熱可塑性樹脂から構成される絶縁性皮膜部54を有する。絶縁性皮膜部54の外表面には、凹部溝56,58が設けられ、2つのコイル巻線50がスロット38の中で重ね合わせられると、この2つの凹部溝56,58が一体的な穴60となって、この中を冷媒が流通できる。   In the slot 38 of the stator core 32, as shown in FIG. 4, one coil winding 50 is sequentially stacked and inserted. That is, the three-phase coil windings 50 of the rotating electrical machine 10 are adjacently stacked. One coil winding 50 has a conductor portion 52 made of a copper wire or the like, and an insulating film portion 54 made of a thermoplastic resin such as polyamide (PA) on the conductor portion 52. Concave grooves 56 and 58 are provided on the outer surface of the insulating coating 54, and when the two coil windings 50 are overlapped in the slot 38, the two concave grooves 56 and 58 are integrated into holes. 60, and the refrigerant can circulate therethrough.
導体部44の材質は、銅以外の良導体金属であってもよい。絶縁性皮膜部46の材質は、ポリアミド以外のものを用いることができる。例えば、ポリプロピレン(PP)、ポリテトラフルオロエチレン(PTFE)、ポリアミドイミド(PAI)、ポリエステル(PE)、ポリイミド(PI)、ポリアセタール(POM)、ポリフェニレンサルファイド(PPS)、ポリエーテルサルフォン(PES)、ポリエーテルエーテルケトン(PEEK)、ポリエチレン(PE)、ポリエチレンテレフタレート(PET)、ポリスチレン(PS)等を用いることができる。導体部44の上に絶縁性皮膜部46を形成する方法としては、樹脂と溶剤の混合物であるワニスを導体部44の上に塗布し、適当な焼付炉で焼付する方法等を用いることができる。   The material of the conductor portion 44 may be a good conductor metal other than copper. A material other than polyamide can be used as the material of the insulating film portion 46. For example, polypropylene (PP), polytetrafluoroethylene (PTFE), polyamideimide (PAI), polyester (PE), polyimide (PI), polyacetal (POM), polyphenylene sulfide (PPS), polyethersulfone (PES), Polyether ether ketone (PEEK), polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS) and the like can be used. As a method of forming the insulating film portion 46 on the conductor portion 44, a method of applying a varnish that is a mixture of a resin and a solvent on the conductor portion 44 and baking it in an appropriate baking furnace can be used. .
図5は、図4のB部の部分拡大図であって、コイル巻線50の断面形状について、スロット38の中に配置される場合を例として説明する図である。コイル巻線50は、上記のように導体部52とその上に設けられる絶縁性皮膜部54を含んで構成される。ここでは、導体部52は矩形断面を有している。絶縁性皮膜部54は、膜厚の厚い部分と、膜厚の薄い部分とを有しており、この膜厚の薄い部分が、コイル巻線50の外表面における凹部溝56,58となっている。   FIG. 5 is a partial enlarged view of a portion B in FIG. 4, and illustrates a case where the cross-sectional shape of the coil winding 50 is arranged in the slot 38 as an example. The coil winding 50 includes the conductor portion 52 and the insulating film portion 54 provided thereon as described above. Here, the conductor part 52 has a rectangular cross section. The insulating film portion 54 has a thick portion and a thin portion, and the thin portion becomes the concave grooves 56 and 58 on the outer surface of the coil winding 50. Yes.
この凹部溝56,58は、コイル巻線50の軸方向に延びる。図3では、コイルエンド部34において、コイル巻線50の軸方向に延びる凹部溝56の様子が示されている。また、この2つの凹部溝56,58は、コイル巻線50の断面形状について一方側側面とそれに背向する他方側側面のそれぞれの同じ位置に設けられる。同じ位置とは、一方側側面と他方側側面に共通して接続される共通側面の位置から測って同じ距離の位置という意味である。図5で、一方側側面を凹部溝58が設けられる側面とし、他方側側面を凹部溝58が設けられる側面とすると、共通側面は、左側側面または右側側面であるが、凹部溝56,58は、この共通側面から測って同じ位置に設けられる。   The recessed grooves 56 and 58 extend in the axial direction of the coil winding 50. In FIG. 3, the state of the recessed groove 56 extending in the axial direction of the coil winding 50 is shown in the coil end portion 34. The two concave grooves 56 and 58 are provided at the same position on the one side surface and the other side surface facing the cross-sectional shape of the coil winding 50. The same position means a position at the same distance as measured from the position of the common side surface commonly connected to the one side surface and the other side surface. In FIG. 5, when the one side surface is a side surface on which the concave groove 58 is provided and the other side surface is the side surface on which the concave groove 58 is provided, the common side surface is the left side surface or the right side surface. , Provided at the same position as measured from this common side.
これによって、2つのコイル巻線50を重ね合わせたときに、一体化して1つの冷媒流通用の穴60が形成される。その意味で、凹部溝56,58は、冷媒流通用凹部溝である。   Thereby, when the two coil windings 50 are overlapped, one hole 60 for circulating the refrigerant is formed integrally. In that sense, the recess grooves 56 and 58 are coolant circulation recess grooves.
図6は、他の断面形状を有するコイル巻線70を示す図である。このコイル巻線70は、矩形断面形状を有する導体部72と、その上に形成される絶縁性皮膜部74とを含んで構成され、絶縁性皮膜部74の外表面の4つの各側面にそれぞれ凹部溝76,78,80,82が設けられる。これらの凹部溝76,78,80,82は、コイル巻線70の軸方向に延び、2つのコイル巻線50を重ね合わせたときに、一体化して1つの冷媒流通用の穴60が形成されるような位置にそれぞれ配置される。   FIG. 6 is a diagram showing a coil winding 70 having another cross-sectional shape. The coil winding 70 is configured to include a conductor portion 72 having a rectangular cross-sectional shape and an insulating film portion 74 formed on the conductor portion 72, and is provided on each of the four side surfaces of the outer surface of the insulating film portion 74. Recessed grooves 76, 78, 80, 82 are provided. These concave grooves 76, 78, 80, 82 extend in the axial direction of the coil winding 70, and when the two coil windings 50 are overlapped, they are integrated to form one coolant circulation hole 60. Are arranged at such positions.
図6では、図の縦方向にコイル巻線70が重ねられる様子が示され、その場合に2つの凹部溝76,78が1つに一体化して形成される穴60が図示されている。ここでは、残りの凹部溝80,82はスロット38の内壁との間に冷媒流通用の通路を形成する。また、図6の横方向にコイル巻線70が配置されることを考えると、その場合には、2つの凹部溝80,82が一体化して1つの穴が形成されることになる。   FIG. 6 shows a state in which the coil windings 70 are overlapped in the vertical direction of the drawing, in which case the hole 60 formed by integrating the two recessed grooves 76 and 78 into one is shown. Here, the remaining recess grooves 80 and 82 form a passage for refrigerant circulation between the inner wall of the slot 38. Further, considering that the coil winding 70 is arranged in the horizontal direction of FIG. 6, in this case, the two recessed grooves 80 and 82 are integrated to form one hole.
図5、図6では、導体部52,72が矩形形状の断面形状を有しているが、図7、図8は、導体部が凹凸形状の断面形状を有し、絶縁性皮膜部が一様の厚さを有するコイル巻線90,100を示す図である。図7のコイル巻線90は、略H字形状の断面形状を有する導体部92と、その上に一様な厚さで形成される絶縁性皮膜部94を有する。導体部92の凹凸形状によって、コイル巻線90の外形は、凹部溝96,98を有し、外観上は図5で説明したコイル巻線50と同じである。   5 and 6, the conductor portions 52 and 72 have a rectangular cross-sectional shape. However, in FIGS. 7 and 8, the conductor portion has a concavo-convex cross-sectional shape, and the insulating film portion is one. It is a figure which shows the coil windings 90 and 100 which have the same thickness. A coil winding 90 in FIG. 7 includes a conductor portion 92 having a substantially H-shaped cross section and an insulating coating portion 94 formed on the conductor portion 92 with a uniform thickness. Due to the uneven shape of the conductor portion 92, the outer shape of the coil winding 90 has recessed grooves 96 and 98, and the outer appearance is the same as the coil winding 50 described in FIG.
図8のコイル巻線100は、矩形の四隅から突き出し部をそれぞれ有する凹凸形状の断面形状を有する導体部102と、その上に一様な厚さで形成される絶縁性皮膜部104を有する。導体部102の凹凸形状によって、コイル巻線100の外形は、4つの凹部溝106,108,110,112を有し、外観上は図6で説明したコイル巻線70とほぼ同じである。   A coil winding 100 in FIG. 8 includes a conductor portion 102 having a concavo-convex cross-sectional shape each having protruding portions from four corners of a rectangle, and an insulating film portion 104 formed with a uniform thickness thereon. Due to the uneven shape of the conductor portion 102, the outer shape of the coil winding 100 has four concave grooves 106, 108, 110, 112, and is substantially the same as the coil winding 70 described in FIG.
このように、導体部とその上の絶縁皮膜部とを有するコイル巻線において、その外表面、すなわち、絶縁皮膜部の外表面に、軸方向の凹部溝を形成することができ、この凹部溝を、冷媒流通用溝として用いることで、コイル巻線を効果的に冷却できる。   As described above, in the coil winding having the conductor portion and the insulating coating portion thereon, an axial recess groove can be formed on the outer surface thereof, that is, the outer surface of the insulating coating portion. Is used as the coolant circulation groove, so that the coil winding can be effectively cooled.
本発明に係る絶縁性皮膜付導線は、回転電機の固定子巻線等に利用できる。   The conducting wire with an insulating film according to the present invention can be used for a stator winding of a rotating electrical machine.
10 回転電機、12 モータケース、14 ロータ軸、20 ロータ、22 ロータコア、24 永久磁石、30 ステータ、32 ステータコア、33 スロット巻線、34 コイルエンド部、36 ティース、38 スロット、40 絶縁シート、50,70,90,100 コイル巻線、52,72,92,102,104 導体部、54,74,94 絶縁性皮膜部、56,58,76,78,80,82,96,98,106,108,110,112 凹部溝、60 穴。   DESCRIPTION OF SYMBOLS 10 Rotating electrical machine, 12 Motor case, 14 Rotor shaft, 20 Rotor, 22 Rotor core, 24 Permanent magnet, 30 Stator, 32 Stator core, 33 Slot winding, 34 Coil end part, 36 teeth, 38 slot, 40 Insulating sheet, 50, 70, 90, 100 Coil winding, 52, 72, 92, 102, 104 Conductor part, 54, 74, 94 Insulating film part, 56, 58, 76, 78, 80, 82, 96, 98, 106, 108 , 110, 112 Recessed groove, 60 holes.

Claims (5)

  1. 巻線枠に順次巻線されるコイル巻線用の絶縁性皮膜付導線であって、
    導体部と、
    導体部の上に設けられ熱可塑性樹脂で構成される絶縁皮膜部と、
    外表面に軸方向に延びる冷媒流通用凹部溝と、
    を備えることを特徴とする絶縁性皮膜付導線。
    A conductive wire with an insulating film for coil winding, which is sequentially wound around a winding frame,
    A conductor portion;
    An insulating film portion formed of a thermoplastic resin provided on the conductor portion;
    A concave groove for circulating refrigerant extending in the axial direction on the outer surface;
    A conductive wire with an insulating film, characterized by comprising:
  2. 請求項1に記載の絶縁性皮膜付導線において、
    絶縁皮膜部は、膜厚の厚い凸部と、膜厚の薄い凹部とを有することを特徴とする絶縁性皮膜付導線。
    In the lead with an insulating film according to claim 1,
    The insulating film portion has a thick convex portion and a thin concave portion.
  3. 請求項1に記載の絶縁性皮膜付導線において、
    導体部は、断面形状が凹凸形状を有することを特徴とする絶縁性皮膜付導線。
    In the lead with an insulating film according to claim 1,
    The conductor part is a conducting wire with an insulating film, characterized in that the cross-sectional shape has an uneven shape.
  4. 請求項1に記載の絶縁性皮膜付導線において、
    冷媒流通用凹部溝は、2つのコイル巻線を重ね合わせたときに、一体化して1つの冷媒流通穴を形成するように、コイル巻線の断面形状について一方側側面とそれに背向する他方側側面のそれぞれの同じ位置に設けられることを特徴とする絶縁性皮膜付導線。
    In the lead with an insulating film according to claim 1,
    The coolant circulation recess groove is formed so that when the two coil windings are overlapped with each other, one side surface and the other side facing away from each other are formed so as to form a single coolant circulation hole. A conductive wire with an insulating film, characterized by being provided at the same position on each side surface.
  5. ロータ軸に取り付けられる回転子であるロータと、
    ロータの外周側に設けられ、コイル巻線用の絶縁性皮膜付導線を含む固定子であるステータと、
    を備え、
    絶縁性皮膜付導線は、
    導体部と、
    導体部の上に設けられ熱可塑性樹脂で構成される絶縁皮膜部と、
    外表面に軸方向に延びる冷媒流通用凹部溝と、
    を備えることを特徴とする回転電機。
    A rotor that is a rotor attached to the rotor shaft;
    A stator that is provided on the outer peripheral side of the rotor and that is a stator including a conductor with an insulating film for coil winding;
    With
    Conductive wire with insulating film is
    A conductor portion;
    An insulating film portion formed of a thermoplastic resin provided on the conductor portion;
    A concave groove for circulating refrigerant extending in the axial direction on the outer surface;
    A rotating electric machine comprising:
JP2010245885A 2010-11-02 2010-11-02 Conductor wire including insulative coating and rotating electric machine Pending JP2012100433A (en)

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CN110445268B (en) * 2015-02-19 2021-07-13 株式会社电装 Stator for rotating electric machine
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CN108448771A (en) * 2017-02-16 2018-08-24 保时捷股份公司 The method of coil segment and manufacture coil segment for stator coil
CN108448771B (en) * 2017-02-16 2021-07-27 保时捷股份公司 Coil segment for a stator coil and method for producing a coil segment
JP2018133988A (en) * 2017-02-16 2018-08-23 ドクター エンジニール ハー ツェー エフ ポルシェ アクチエンゲゼルシャフトDr. Ing. h.c. F. Porsche Aktiengesellschaft Coil segment for stator coil and method for manufacturing coil segment
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