JP4914288B2 - Bus bar unit - Google Patents

Bus bar unit Download PDF

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Publication number
JP4914288B2
JP4914288B2 JP2007121556A JP2007121556A JP4914288B2 JP 4914288 B2 JP4914288 B2 JP 4914288B2 JP 2007121556 A JP2007121556 A JP 2007121556A JP 2007121556 A JP2007121556 A JP 2007121556A JP 4914288 B2 JP4914288 B2 JP 4914288B2
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bus bar
power supply
neutral point
stator
terminal
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JP2008278692A (en
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雅樹 松山
英治 山田
裕 小松
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Sumitomo Electric Industries Ltd
Toyota Motor Corp
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Sumitomo Electric Industries Ltd
Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Description

この発明は、ハイブリッド自動車や燃料電池自動車等に組み込まれる回転電機用ステータに関する。   The present invention relates to a stator for a rotating electrical machine incorporated in a hybrid vehicle, a fuel cell vehicle, or the like.

ハイブリッド自動車や燃料電池自動車は、駆動装置や回生ブレーキとして回転電機を使用する。この回転電機に組み込まれるステータとして、リング状のヨークとそのヨークから径方向内方に延出するティースとからなるステータコアと、そのステータコアのティースにインシュレータを介して巻回されるコイルと、ステータコアと同心に配置されたリング状のバスバーユニットとを有する回転電機用ステータが知られている（特許文献１）。   Hybrid vehicles and fuel cell vehicles use rotating electrical machines as drive units and regenerative brakes. As a stator incorporated in this rotating electrical machine, a stator core composed of a ring-shaped yoke and teeth extending radially inward from the yoke, a coil wound around the teeth of the stator core via an insulator, and a stator core A stator for a rotating electrical machine having a ring-shaped bus bar unit arranged concentrically is known (Patent Document 1).

この回転電機用ステータは、バスバーユニットに組み込まれた給電用バスバーから内周側に延出する給電端子と、バスバーユニットに組み込まれた中性点バスバーから内周側に延出する中性点端子を有し、コイルの巻回部からヨーク側に引き出された巻き始め端末が給電端子に接続され、巻き終わり端末が中性点端子に接続されている。
特開２００６−６７７４０号公報 The stator for a rotating electrical machine includes a power supply terminal extending from the power supply bus bar incorporated in the bus bar unit to the inner peripheral side, and a neutral point terminal extending from the neutral point bus bar incorporated in the bus bar unit to the inner peripheral side. The winding start terminal pulled out from the winding part of the coil to the yoke side is connected to the power supply terminal, and the winding end terminal is connected to the neutral point terminal.
JP 2006-67740 A

しかし、この回転電機用ステータのバスバーユニットは、給電端子と中性点端子に、コイルの巻回部からヨーク側に引き出されたコイルの端末を接続したときに、給電用バスバーと中性点バスバーがステータ軸方向に見てヨークと重なった配置となる。そのため、このバスバーユニットは、ティースよりもヨークの方がステータ軸方向の厚さが大きいステータに組み込んだ場合、ステータの軸方向の厚さが大きくなり、他の部品の設置スペースが不足しやすいという問題があった。   However, this bus bar unit for a stator for a rotating electrical machine has a power supply bus bar and a neutral point bus bar when the terminal of the coil drawn from the coil winding portion to the yoke side is connected to the power supply terminal and the neutral point terminal. Is arranged so as to overlap the yoke when viewed in the stator axial direction. Therefore, when this bus bar unit is incorporated in a stator in which the yoke is thicker in the axial direction of the stator than the teeth, the axial thickness of the stator becomes large, and the installation space for other parts is likely to be insufficient. There was a problem.

この発明が解決しようとする課題は、ティースよりもヨークの方がステータ軸方向の厚さが大きい回転電機用ステータの省スペース化を図ることである。   The problem to be solved by the present invention is to reduce the space of a stator for a rotating electrical machine in which the yoke is thicker in the stator axial direction than the teeth.

上記の課題を解決するために、同心に配置された複数の給電用バスバーと、その各給電用バスバーと同心に配置された中性点バスバーと、前記各給電用バスバーと前記中性点バスバーを保持するホルダーと、前記各給電用バスバーから外周側に延出する給電端子と、前記中性点バスバーから外周側に延出する中性点端子とを有し、前記給電端子と前記中性点端子は、ステータ周方向に見てステータ軸方向に開放するＵ状の接続部を同一円周上に有し、その各接続部がステータ径方向にかしめてステータコアのコイルの端末に接続される構成をバスバーユニットに採用した。   In order to solve the above problems, a plurality of power supply bus bars arranged concentrically, a neutral point bus bar arranged concentrically with each of the power supply bus bars, each of the power supply bus bars and the neutral point bus bar A holder for holding, a power supply terminal extending from the power supply bus bar to the outer peripheral side, and a neutral point terminal extending from the neutral point bus bar to the outer peripheral side, the power supply terminal and the neutral point The terminal has U-shaped connecting portions that are open in the stator axial direction when viewed in the stator circumferential direction on the same circumference, and each of the connecting portions is caulked in the stator radial direction to be connected to the end of the stator core coil. Was adopted for the busbar unit.

このバスバーユニットは、前記ホルダーが、前記複数の給電用バスバーのうちの前記中性点バスバーに隣り合う前記給電用バスバーと中性点バスバーの間を周方向に延びる隔壁を有し、その隔壁の軸方向端面に周方向に連続する溝を形成した構成を加えるとより好ましいものとなる。   In this bus bar unit, the holder has a partition extending in a circumferential direction between the power supply bus bar adjacent to the neutral point bus bar and the neutral point bus bar among the plurality of power supply bus bars. It is more preferable to add a configuration in which a circumferentially continuous groove is formed on the end face in the axial direction.

この発明のバスバーユニットは、給電端子と中性点端子が給電用バスバーと中性点バスバーから外周側に延出しているので、給電端子と中性点端子に、ステータコアのティースに巻回したコイルの巻回部からヨーク側に引き出されたコイルの端末を接続したときに、給電用バスバーと中性点バスバーがステータ軸方向に見てティースと重なった配置となり、ヨークとは重ならない。そのため、ティースよりもヨークの方がステータ軸方向の厚さが大きいステータにこのバスバーユニットを組み込んだ場合、ステータの軸方向の厚さが大きくなりにくく、ステータの設置スペースを抑えることができる。   In the bus bar unit according to the present invention, the power supply terminal and the neutral point terminal extend from the power supply bus bar and the neutral point bus bar to the outer peripheral side. Therefore, the coil wound around the teeth of the stator core around the power supply terminal and the neutral point terminal. When the end of the coil drawn from the winding part to the yoke side is connected, the power supply bus bar and the neutral point bus bar are arranged so as to overlap the teeth when viewed in the stator axial direction, and do not overlap the yoke. For this reason, when this bus bar unit is incorporated in a stator having a yoke with a greater thickness in the stator axial direction than in the teeth, the stator axial thickness is less likely to increase, and the stator installation space can be reduced.

また、給電端子へのコイル端末の接続と、中性点端子へのコイル端末の接続とを、同一円周上で同一方向にかしめて行なうことができるので、コイルへの接続の作業性に優れる。   Moreover, since the connection of the coil terminal to the power supply terminal and the connection of the coil terminal to the neutral point terminal can be performed by caulking in the same direction on the same circumference, the workability of the connection to the coil is excellent. .

また、前記ホルダーが、前記複数の給電用バスバーのうちの前記中性点バスバーに隣り合う前記給電用バスバーと中性点バスバーの間を周方向に延びる隔壁を有し、その隔壁の軸方向端面に周方向に連続する溝を形成したものは、隔壁に溝が形成されているので、給電用バスバーと中性点バスバーの間の沿面距離が大きく、給電用バスバーと中性点バスバーの絶縁の信頼性に優れる。   The holder has a partition wall extending in a circumferential direction between the power supply bus bar adjacent to the neutral point bus bar and the neutral point bus bar among the plurality of power supply bus bars, and an axial end surface of the partition wall Since the groove is formed in the partition wall, the creepage distance between the power supply bus bar and the neutral point bus bar is large, and the insulation between the power supply bus bar and the neutral point bus bar is Excellent reliability.

図１および図２に、この発明の実施形態のバスバーユニットを組み込んだ回転電機用ステータを示す。この回転電機用ステータは、円環状に配置した分割ステータ１と、その分割ステータ１を外周から締め付ける筒状のハウジング２と、この発明の実施形態に係るリング状のバスバーユニット３とからなる。   1 and 2 show a stator for a rotating electrical machine in which a bus bar unit according to an embodiment of the present invention is incorporated. This stator for a rotating electrical machine includes a split stator 1 arranged in an annular shape, a cylindrical housing 2 for fastening the split stator 1 from the outer periphery, and a ring-shaped bus bar unit 3 according to an embodiment of the present invention.

図３および図４に示すように、分割ステータ１は、円弧状のヨーク４と、ヨーク４からステータ径方向内方に延出するティース５とからなる分割コア６を有し、ティース５には、インシュレータ７を介してコイル８が巻回されている。分割コア６は、金属磁性粉末の圧粉体からなり、図２に示すように分割ステータ１を円環状に配置した状態で、ヨーク４が連なってリング状のヨーク９を構成する。また、ヨーク４は、ティース５よりもステータ軸方向の厚さが大きくなっており、これにより、ヨーク９が形成する磁路の断面積を確保している。   As shown in FIGS. 3 and 4, the split stator 1 has a split core 6 including an arcuate yoke 4 and a tooth 5 extending from the yoke 4 inward in the radial direction of the stator. A coil 8 is wound through an insulator 7. The split core 6 is made of a green compact of a metal magnetic powder. The split stator 1 is arranged in an annular shape as shown in FIG. Further, the yoke 4 is thicker in the stator axial direction than the teeth 5, thereby ensuring a cross-sectional area of a magnetic path formed by the yoke 9.

インシュレータ７は、図４に示すように、ティース５に装着される筒部１０と、筒部１０の一端と他端にそれぞれ形成されたフランジ部１１，１２と、ステータ外周側のフランジ部１２から外周側に延出してヨーク９の軸方向端面に重なる延出部１３とを有する。筒部１０とフランジ部１１，１２と延出部１３はいずれも絶縁材料からなる。   As shown in FIG. 4, the insulator 7 includes a cylindrical portion 10 attached to the tooth 5, flange portions 11 and 12 formed at one end and the other end of the cylindrical portion 10, and a flange portion 12 on the outer peripheral side of the stator. An extending portion 13 that extends to the outer peripheral side and overlaps the axial end surface of the yoke 9 is provided. The cylindrical portion 10, the flange portions 11 and 12, and the extending portion 13 are all made of an insulating material.

延出部１３には、図３に示すように、ステータ周方向に対向する１対の巻き始め端末係止片１４Ａ，１４Ａと、ステータ周方向に対向する１対の巻き終わり端末係止片１４Ｂ，１４Ｂが形成され、各巻き始め端末係止片１４Ａと各巻き終わり端末係止片１４Ｂには、一端が開放したスリット１５Ａ，１５Ｂがそれぞれ形成されている。   As shown in FIG. 3, the extension portion 13 includes a pair of winding start terminal locking pieces 14A and 14A opposed to the stator circumferential direction and a pair of winding end terminal locking pieces 14B opposed to the stator circumferential direction. , 14B are formed, and each winding start terminal locking piece 14A and each winding end terminal locking piece 14B are respectively formed with slits 15A, 15B having one end opened.

コイル８は、ティース５に巻回された巻回部８Ｃから巻き始め端末８Ａと巻き終わり端末８Ｂがヨーク４側に引き出され、巻き始め端末８Ａが、ステータ周方向に延びた状態で巻き始め端末係止片１４Ａのスリット１５Ａに係止され、巻き終わり端末８Ｂも、ステータ周方向に延びた状態で巻き終わり端末係止片１４Ｂのスリット１５Ｂに係止されている。   The coil 8 has a winding start terminal 8A and a winding end terminal 8B drawn from the winding part 8C wound around the tooth 5 to the yoke 4 side, and the winding start terminal 8A extends in the stator circumferential direction. The winding end terminal 8B is locked in the slit 15A of the locking piece 14A, and the winding end terminal 8B is also locked in the slit 15B of the winding end terminal locking piece 14B in a state of extending in the stator circumferential direction.

バスバーユニット３は、図５に示すように、外周側から内周側に向けて順に同心配置されたリング状の給電用バスバー１６Ｕ，１６Ｖ，１６Ｗと、各給電用バスバー１６Ｕ，１６Ｖ，１６Ｗと同心に配置された中性点バスバー１６Ｎと、各給電用バスバー１６Ｕ，１６Ｖ，１６Ｗと中性点バスバー１６Ｎを保持するホルダー１７とを有する。給電用バスバー１６Ｕ，１６Ｖ，１６Ｗには、３相交流のＵ，Ｖ，Ｗ相の電源に接続される一次側端子１８Ｕ，１８Ｖ，１８Ｗがそれぞれ設けられている。   As shown in FIG. 5, the bus bar unit 3 is concentric with the ring-shaped power supply bus bars 16U, 16V, and 16W and the power supply bus bars 16U, 16V, and 16W that are arranged concentrically in order from the outer peripheral side toward the inner peripheral side. Neutral point bus bar 16N, power supply bus bars 16U, 16V, 16W and a holder 17 for holding the neutral point bus bar 16N. The power supply bus bars 16U, 16V, and 16W are respectively provided with primary-side terminals 18U, 18V, and 18W that are connected to three-phase AC U, V, and W-phase power supplies.

また、バスバーユニット３には、給電用バスバー１６Ｕから外周側に延出する給電端子１９Ｂと、給電用バスバー１６Ｖから外周側に延出する給電端子１９Ｂと、給電用バスバー１９Ｗから外周側に延出する給電端子１９Ｂとが周方向に順に設けられ、隣り合う給電端子１９Ｂ，１９Ｂの間に、中性点バスバー１６Ｎから外周側に延出する中性点端子１９Ａが設けられている。   The bus bar unit 3 includes a power supply terminal 19B extending from the power supply bus bar 16U to the outer peripheral side, a power supply terminal 19B extending from the power supply bus bar 16V to the outer peripheral side, and a power supply bus bar 19W extending from the power supply bus bar 19W to the outer peripheral side. The power supply terminal 19B is provided in order in the circumferential direction, and a neutral point terminal 19A extending from the neutral point bus bar 16N to the outer peripheral side is provided between the adjacent power supply terminals 19B and 19B.

中性点端子１９Ａは、図３に示すように、中性点バスバー１６Ｎから外周側に延出する延出部２０Ａと、延出部２０Ａに連なる接続部２１Ａとからなる。接続部２１Ａは、ステータ周方向に見てステータ軸方向に開放するＵ状に形成されており、ステータ径方向にかしめることによって、スリット１５Ａに係止されたコイルの巻き始め端末８Ａに接続される。   As shown in FIG. 3, the neutral point terminal 19A includes an extended portion 20A extending from the neutral point bus bar 16N to the outer peripheral side and a connecting portion 21A connected to the extended portion 20A. The connecting portion 21A is formed in a U shape that opens in the stator axial direction when viewed in the stator circumferential direction, and is connected to the winding start terminal 8A of the coil locked in the slit 15A by caulking in the stator radial direction. The

給電端子１９Ｂも、中性点端子１９Ａと同様に、給電用バスバー１６Ｕ，１６Ｖ，１６Ｗから外周側に延出する延出部２０Ｂと、延出部２０Ｂに連なる接続部２１Ｂとからなる。接続部２１Ｂは、ステータ周方向に見てステータ軸方向に開放するＵ状に形成されており、ステータ径方向にかしめることによって、スリット１５Ｂに係止されたコイルの巻き終わり端末８Ｂに接続される。また、各給電端子１９Ｂの接続部２１Ｂは、図５に示すように、中性点端子１９Ａの接続部２１Ａと同一円周上に配置されている。   Similarly to the neutral point terminal 19A, the power supply terminal 19B includes an extension portion 20B extending from the power supply bus bars 16U, 16V, and 16W to the outer peripheral side, and a connection portion 21B connected to the extension portion 20B. The connection portion 21B is formed in a U shape that opens in the stator axial direction when viewed in the stator circumferential direction, and is connected to the coil winding end terminal 8B locked in the slit 15B by caulking in the stator radial direction. The Moreover, as shown in FIG. 5, the connection part 21B of each electric power feeding terminal 19B is arrange | positioned on the same periphery as the connection part 21A of the neutral point terminal 19A.

ホルダー１７は、図６に示すように、給電用バスバー１６Ｕと中性点バスバー１６Ｎの間に、ステータ周方向に延びる隔壁２２を有する。隔壁２２は、給電用バスバー１６Ｕから延出する給電端子１９Ｂから、その給電端子１９Ｂに対して周方向に隣り合う中性点端子１９Ａの位置まで延びており、隔壁２２のステータ軸方向端面には、周方向に連続する溝２３が形成されている。   As shown in FIG. 6, the holder 17 includes a partition wall 22 extending in the stator circumferential direction between the power supply bus bar 16 </ b> U and the neutral point bus bar 16 </ b> N. The partition wall 22 extends from the power supply terminal 19B extending from the power supply bus bar 16U to the position of the neutral point terminal 19A adjacent to the power supply terminal 19B in the circumferential direction. A groove 23 continuous in the circumferential direction is formed.

この回転電機用ステータは、たとえば次のようにして組み立てることができる。まず、分割コア６にインシュレータ７を介してコイル８を巻回し、コイル８の巻き始め端末８Ａを巻き始め端末係止片１４Ａのスリット１５Ａに係止させるとともに、コイルの巻き終わり端末８Ｂを巻き終わり端末係止片１４Ｂのスリット１５Ｂに係止させる。このようにして形成された分割ステータ１を円環状に配置し、その外周にハウジング２を焼き嵌めする。つづいて、バスバーユニット３を分割ステータ１と同心に配置して、コイルの巻き始め端末８Ａを各中性点端子１９Ａの接続部２１Ａ内に導入するとともに、コイルの巻き終わり端末８Ｂを各給電端子１９Ｂの接続部２１Ｂ内に導入する。その後、中性点端子１９Ａの接続部２１Ａをかしめてコイルの巻き始め端末８Ａと接合するとともに、給電端子１９Ｂの接続部２１Ｂをかしめてコイルの巻き終わり端末８Ｂと接合する。   This stator for a rotating electrical machine can be assembled, for example, as follows. First, the coil 8 is wound around the split core 6 via the insulator 7, the winding start terminal 8A of the coil 8 is started to be locked to the slit 15A of the terminal locking piece 14A, and the coil winding end terminal 8B is ended. It is made to latch in the slit 15B of the terminal latching piece 14B. The divided stator 1 thus formed is arranged in an annular shape, and the housing 2 is shrink-fitted on the outer periphery thereof. Subsequently, the bus bar unit 3 is arranged concentrically with the divided stator 1, and the coil winding start terminal 8A is introduced into the connecting portion 21A of each neutral point terminal 19A, and the coil winding end terminal 8B is connected to each power supply terminal. It introduces into the connection part 21B of 19B. Thereafter, the connecting portion 21A of the neutral point terminal 19A is caulked and joined to the coil winding start terminal 8A, and the connecting portion 21B of the feeding terminal 19B is caulked to join the coil winding end terminal 8B.

このバスバーユニット３を用いると、図７に示すように、中性点端子１９Ａと給電端子１９Ｂに、ティース５に巻回したコイルの巻回部８Ｃからヨーク９側に引き出されたコイルの端末８Ａ，８Ｂを接続したとき、給電用バスバー１６Ｕ，１６Ｖ，１６Ｗと中性点バスバー１６Ｎがティース５とステータ軸方向に重なった配置となり、ティース５よりもステータ軸方向の厚さの大きいヨーク４とは重ならない。そのため、ステータの軸方向の厚さが大きくなりにくく、ステータの設置スペースを抑えることができる。   When this bus bar unit 3 is used, as shown in FIG. 7, the terminal 8A of the coil drawn out to the yoke 9 side from the coil winding portion 8C wound around the tooth 5 to the neutral point terminal 19A and the feeding terminal 19B. , 8B are connected so that the power supply bus bars 16U, 16V, 16W and the neutral point bus bar 16N overlap with the teeth 5 in the stator axial direction, and the yoke 4 having a larger thickness in the stator axial direction than the teeth 5 Do not overlap. Therefore, the thickness of the stator in the axial direction is difficult to increase, and the installation space for the stator can be suppressed.

また、このバスバーユニット３は、中性点端子１９Ａの接続部２１Ａと給電端子１９Ｂの接続部２１Ｂとが同一円周上にあり、かつ、かしめる方向が同一なので、中性点端子１９Ａと巻き始め端末８Ａの接続と、給電端子１９Ｂと巻き終わり端末８Ｂの接続とを同じ動作で行なうことができ、コイル８への接続の作業性がよい。   Further, the bus bar unit 3 has the connecting portion 21A of the neutral point terminal 19A and the connecting portion 21B of the power feeding terminal 19B on the same circumference and the same caulking direction. The connection of the start terminal 8A and the connection of the power supply terminal 19B and the winding end terminal 8B can be performed by the same operation, and the workability of the connection to the coil 8 is good.

また、給電用バスバー１６Ｕと中性点バスバー１６Ｎの間の隔壁２２に溝２３が形成されているので、給電用バスバー１６Ｕと中性点バスバー１６Ｎの間の沿面距離が大きく、給電用バスバー１６Ｕと中性点バスバー１６Ｎの絶縁の信頼性に優れる。   Further, since the groove 23 is formed in the partition wall 22 between the power supply bus bar 16U and the neutral point bus bar 16N, the creepage distance between the power supply bus bar 16U and the neutral point bus bar 16N is large, and the power supply bus bar 16U It is excellent in the insulation reliability of the neutral point bus bar 16N.

中性点バスバー１６Ｎは、図に示すように、各給電用バスバー１６Ｕ，１６Ｖ，１６Ｗよりも外周側に配置すると好ましい。このようにすると、中性点バスバー１６Ｎを隣り合う給電用バスバー１６Ｕ，１６Ｖ，１６Ｗの間に配置した場合や、各給電用バスバー１６Ｕ，１６Ｖ，１６Ｗよりも内周側に配置した場合に比較して、中性点端子１９Ａと給電端子１９Ｂの材料を全体として抑えることができ、経済的である。   As shown in the figure, the neutral point bus bar 16N is preferably arranged on the outer peripheral side of the power supply bus bars 16U, 16V, 16W. In this case, the neutral point bus bar 16N is arranged between the adjacent power supply bus bars 16U, 16V, 16W, or compared to the case where the neutral bus bar 16N is arranged on the inner peripheral side of each power supply bus bar 16U, 16V, 16W. Thus, the material of the neutral point terminal 19A and the power supply terminal 19B can be suppressed as a whole, which is economical.

上記実施形態では、バスバーユニット３を、ヨーク４の厚さがティース５よりも大きい分割コア６を円環状に配置してステータコアを形成した回転電機用ステータに組み込んでいるが、このバスバーユニット３は、リング状の電磁鋼板の積層体でステータコアを形成し、ヨークの積層数をティースの積層数よりも多くすることによってステータ軸方向のヨークの厚さをティースよりも大きくした回転電機用ステータに組み込んでもよい。   In the above embodiment, the bus bar unit 3 is incorporated in a stator for a rotating electrical machine in which a split core 6 whose yoke 4 is thicker than the teeth 5 is arranged in an annular shape to form a stator core. The stator core is formed of a laminated body of ring-shaped electrical steel sheets, and the yoke thickness in the stator axial direction is made larger than the teeth by increasing the number of yoke stacks than the number of teeth. But you can.

また、上記実施形態では、コイルの巻き始め端末８Ａを中性点端子１９Ａに接続するとともにコイルの巻き終わり端末８Ｂを給電端子１９Ｂに接続しているが、コイルの巻き始め端末８Ａを給電端子１９Ｂに接続するとともにコイルの巻き終わり端末８Ｂを中性点端子１９Ａに接続するようにしてもよい。   In the above embodiment, the coil winding start terminal 8A is connected to the neutral point terminal 19A and the coil winding end terminal 8B is connected to the power supply terminal 19B. However, the coil winding start terminal 8A is connected to the power supply terminal 19B. The coil winding end terminal 8B may be connected to the neutral point terminal 19A.

図では、２本のコイルを並列に巻回しているが、１本のコイルを巻回するようにしてもよい。   In the figure, two coils are wound in parallel, but one coil may be wound.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した意味ではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

この発明の実施形態のバスバーユニットを組み込んだ回転電機用ステータを示す平面図The top view which shows the stator for rotary electric machines incorporating the bus-bar unit of embodiment of this invention 図１の回転電機用ステータの軸直角断面図1 is a cross-sectional view perpendicular to the axis of the stator for a rotating electrical machine in FIG. 図１の回転電機用ステータの分解斜視図1 is an exploded perspective view of the stator for a rotating electrical machine in FIG. 図３の分割ステータをステータ軸を含む平面に沿って切断した状態の斜視図The perspective view of the state which cut | disconnected the division | segmentation stator of FIG. 3 along the plane containing a stator axis | shaft 図１のバスバーユニットの平面図Plan view of the bus bar unit of FIG. 図５のバスバーユニットの拡大斜視図An enlarged perspective view of the bus bar unit of FIG. 図１の回転電機用ステータのステータ軸を含む平面に沿った断面図Sectional drawing along the plane containing the stator axis | shaft of the stator for rotary electric machines of FIG.

符号の説明Explanation of symbols

３ バスバーユニット
８Ａ，８Ｂ コイルの端末
１６Ｕ，１６Ｖ，１６Ｗ 給電用バスバー
１６Ｎ 中性点バスバー
１７ ホルダー
１９Ａ 中性点端子
１９Ｂ 給電端子
２１Ａ，２１Ｂ 接続部
２２ 隔壁
２３ 溝 3 Busbar units 8A, 8B Coil terminals 16U, 16V, 16W Power supply busbar 16N Neutral point busbar 17 Holder 19A Neutral point terminal 19B Power supply terminals 21A, 21B Connection 22 Bulkhead 23 Groove

Claims (2)

同心に配置されたリング状の複数の給電用バスバー（１６Ｕ，１６Ｖ，１６Ｗ）と、その各給電用バスバー（１６Ｕ，１６Ｖ，１６Ｗ）と同心に配置されたリング状の中性点バスバー（１６Ｎ）と、前記各給電用バスバー（１６Ｕ，１６Ｖ，１６Ｗ）と前記中性点バスバー（１６Ｎ）を保持するホルダー（１７）と、前記各給電用バスバー（１６Ｕ，１６Ｖ，１６Ｗ）から外周側に延出する給電端子（１９Ｂ）と、前記中性点バスバー（１６Ｎ）から外周側に延出する中性点端子（１９Ａ）とを有するバスバーユニットであって、前記給電端子（１９Ｂ）と前記中性点端子（１９Ａ）は、ステータ周方向に見てステータ軸方向に開放するＵ状の接続部（２１Ｂ，２１Ａ）を同一円周上に有し、その各接続部（２１Ｂ，２１Ａ）がステータ径方向にかしめてステータコアのコイルの端末（８Ｂ，８Ａ）に接続されるバスバーユニット。   A plurality of ring-shaped power supply bus bars (16U, 16V, 16W) arranged concentrically, and a ring-shaped neutral point bus bar (16N) arranged concentrically with each of the power supply bus bars (16U, 16V, 16W) And each power supply bus bar (16U, 16V, 16W), a holder (17) for holding the neutral point bus bar (16N), and each power supply bus bar (16U, 16V, 16W) extending outward. A bus bar unit having a power feeding terminal (19B) and a neutral point terminal (19A) extending from the neutral point bus bar (16N) to the outer peripheral side, the power feeding terminal (19B) and the neutral point The terminal (19A) has U-shaped connection portions (21B, 21A) that open in the stator axial direction when viewed in the stator circumferential direction on the same circumference, and each of the connection portions (21B, 21A) is in the stator radial direction. Busbar unit connected to caulking of the stator core of the coil terminals (8B, 8A) to. 前記ホルダー（１７）が、前記複数の給電用バスバー（１６Ｕ，１６Ｖ，１６Ｗ）のうちの前記中性点バスバー（１６Ｎ）に隣り合う前記給電用バスバー（１６Ｕ）と中性点バスバー（１６Ｎ）の間を周方向に延びる隔壁（２２）を有し、その隔壁（２２）の軸方向端面に周方向に連続する溝（２３）を形成した請求項１に記載のバスバーユニット。   The holder (17) is disposed between the power supply bus bar (16U) and the neutral point bus bar (16N) adjacent to the neutral point bus bar (16N) of the plurality of power supply bus bars (16U, 16V, 16W). The bus bar unit according to claim 1, further comprising a partition wall (22) extending in the circumferential direction, and a groove (23) continuous in the circumferential direction formed on an axial end face of the partition wall (22).
JP2007121556A 2007-05-02 2007-05-02 Bus bar unit Expired - Fee Related JP4914288B2 (en)

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JP5772296B2 (en) * 2011-06-28 2015-09-02 株式会社豊田自動織機 Electric compressor
JP5988005B1 (en) * 2015-04-16 2016-09-07 ダイキン工業株式会社 Stator and motor and compressor having the same
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JP6487381B2 (en) * 2016-06-17 2019-03-20 矢崎総業株式会社 Feeding ring
DE102016215716A1 (en) 2016-08-22 2018-02-22 Em-Motive Gmbh Stator of an electric machine
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JP4483480B2 (en) * 2004-08-27 2010-06-16 アイシン精機株式会社 Stator and motor

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CN104935100B (en) * 2014-03-17 2019-07-26 株式会社牧田 Motor

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