JP2020124029A - Relay conductor and electric power conversion device using the same - Google Patents

Relay conductor and electric power conversion device using the same Download PDF

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JP2020124029A
JP2020124029A JP2019013940A JP2019013940A JP2020124029A JP 2020124029 A JP2020124029 A JP 2020124029A JP 2019013940 A JP2019013940 A JP 2019013940A JP 2019013940 A JP2019013940 A JP 2019013940A JP 2020124029 A JP2020124029 A JP 2020124029A
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bus bar
fixing member
conductor
phase
relay
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JP7194603B2 (en
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直哉 須藤
Naoya Sudo
直哉 須藤
和志 高橋
Kazuyuki Takahashi
和志 高橋
雅浩 植竹
Masahiro Uetake
雅浩 植竹
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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Abstract

To provide a relay conductor capable of suppressing a stress occurring in each bus bar even in a case where a shape of each bus bar or a terminal angle is different in each phase.SOLUTION: A relay conductor 1 comprises: a first bus bar; a second bus bar; and a fixing member 4 fixing them. The first bus bar and the second bus bar include: a weld edge 8 that is welded to another conductor on one side of the fixing member 4; and a coupling edge 9 that is coupled to the other conductor on the other side of the fixing member 4, respectively. The fixing member 4 includes: a first covering part that covers a first bus bat so that a distance from a power point of the other conductor fastened to the first bus bar to the fixing member 4 is equal to the distance from the power point of the other conductor fastened to the second bus bar to the fixing member; and a second covering part that covers the second bus bar.SELECTED DRAWING: Figure 2

Description

本発明は、三相モータ等の電気的負荷とインバータ等の電力源を中継する中継導体、および、それを用いた電力変換装置に関する。 The present invention relates to a relay conductor that relays an electric load such as a three-phase motor and a power source such as an inverter, and a power conversion device using the relay conductor.

特許文献１には、モータと電力変換装置を中継する中継導体が開示されている。例えば、同文献の段落００９８には、「図１４（ａ）は、交流端子ブロック７６０と交流リレーバスバー７５０とにより構成される交流側中継導体８０２の斜視図である。図１４（ｂ）は、交流端子ブロック７６０の斜視図である。図１４（ｃ）は、交流リレーバスバー７５０の斜視図である。」の記載があり、また、段落０１００には、「図１４（ｂ）に示されるように、交流端子ブロック７６０は、交流バスバー７６３と樹脂製ブロック７６２が一体に形成される。図１４（ａ）に示されるように、交流バスバー７６３は、その下部において交流リレーバスバー７５０と、ネジ等により機械的に接続される。」の記載があり、さらに、段落０１０２には、「図１４（ｃ）に示されるように、交流リレーバスバー７５０は、リレーバスバー７５３と絶縁部材７５２が一体に形成される。後述する図１５に示されるように、リレーバスバー７５３の一端は、パワー半導体モジュール３００ａ〜３００ｃ及びパワー半導体モジュール３０１ａ〜３０１ｃと溶接接続される。そのため、リレーバスバー７５３は、溶接性を有した材料を用いられる必要がある。また、リレーバスバー７５３と交流バスバー７６３は、リレーバスバー７５３に形成された貫通孔７５５を通る第１締結部材７７１によって接続される。」の記載がある。 Patent Document 1 discloses a relay conductor that relays a motor and a power converter. For example, in paragraph 0098 of the same document, "FIG. 14(a) is a perspective view of an AC side relay conductor 802 including an AC terminal block 760 and an AC relay bus bar 750. FIG. 14C is a perspective view of the AC terminal block 760. FIG. 14C is a perspective view of the AC relay bus bar 750.” Further, in paragraph 0100, “as shown in FIG. In the AC terminal block 760, the AC bus bar 763 and the resin block 762 are integrally formed. As shown in FIG. Mechanically connected with each other.” Further, in paragraph 0102, as shown in FIG. 14C, in the AC relay bus bar 750, the relay bus bar 753 and the insulating member 752 are integrally formed. 15, one end of the relay bus bar 753 is welded and connected to the power semiconductor modules 300a to 300c and the power semiconductor modules 301a to 301c, so that the relay bus bar 753 has weldability. In addition, the relay bus bar 753 and the AC bus bar 763 are connected by the first fastening member 771 passing through the through hole 755 formed in the relay bus bar 753."

すなわち、特許文献１には、リレーバスバーと交流バスバーが締結部材によって接続された構成の中継導体が開示されている。 That is, Patent Document 1 discloses a relay conductor in which a relay bus bar and an AC bus bar are connected by a fastening member.

特開２０１４−１７６２７１号公報JP, 2014-176271, A

特許文献１の中継導体は、同文献の図１４（ａ）〜（ｃ）に示されるように、交流バスバー７６３とリレーバスバー７５３が各相同等形状であるため、中継導体を介して応力が伝達される場合であっても、その応力は各バスバーに略均等に分担され、一部バスバーが過大な応力を担うという問題が生じることはない。 In the relay conductor of Patent Literature 1, as shown in FIGS. 14A to 14C of the literature, since the AC bus bar 763 and the relay bus bar 753 have the same shape in each phase, stress is transmitted through the relay conductor. Even in such a case, the stress is substantially evenly shared by the bus bars, and there is no problem that some bus bars bear excessive stress.

しかしながら、バスバー形状や端子角度等が相毎に異なる中継導体もあり、この場合は、一部バスバーが過大な応力を担い、電気的接続が破断する可能性もある。 However, some relay conductors have different busbar shapes, terminal angles, and the like for each phase. In this case, some busbars bear excessive stress, and there is a possibility that electrical connection may be broken.

そこで、本発明は、バスバー形状や端子角度が相毎に異なる場合でも、各バスバーで発生する応力を抑制できる中継導体を提供することを目的とする。 Therefore, an object of the present invention is to provide a relay conductor capable of suppressing the stress generated in each bus bar even when the bus bar shape and the terminal angle are different for each phase.

本発明の中継導体では、第１バスバーと、第２バスバーと、それらを固定する固定部材と、を備え、前記第１バスバーと前記第２バスバーは夫々、前記固定部材の一方側で他の導体と溶接する溶接端と、前記固定部材の他方側で他の導体と締結する締結端を有し、前記固定部材は、前記第１バスバーに締結された他の導体の力点から前記固定部材までの距離と、前記第２バスバーに締結された他の導体の力点から前記固定部材までの距離と、が等しくなるように、前記第１バスバーを覆う第１被覆部と、前記第２バスバーを覆う第２被覆部と、を設けた。 The relay conductor of the present invention includes a first bus bar, a second bus bar, and a fixing member that fixes them, and each of the first bus bar and the second bus bar has another conductor on one side of the fixing member. And a fastening end for fastening the other conductor on the other side of the fixing member, wherein the fixing member is from the force point of the other conductor fastened to the first bus bar to the fixing member. A first covering portion that covers the first bus bar and a first covering portion that covers the second bus bar such that the distance and the distance from the force point of the other conductor fastened to the second bus bar to the fixing member are equal. 2 coating portions were provided.

また、本発明の中継導体では、第１バスバーと、第２バスバーと、それらを固定する固定部材と、を備え、前記第１バスバーと前記第２バスバーは夫々、前記固定部材の一方側で他の導体と溶接する溶接端と、前記固定部材の他方側で他の導体と締結する締結端を有し、前記第１バスバーの締結端から当該第１バスバーに係る力の作用点を第１作用点とし、前記第２バスバーの締結端から当該第２バスバーに係る力の作用点を第２作用点としたとき、前記第１バスバーの締結端から前記第１作用点までの距離は、前記第２バスバーの締結端から前記第２作用点までの距離よりも長く、前記固定部材と前記第１バスバーの接触面積は、前記固定部材と前記第２バスバーの接触面積よりも小さいものとした。 In addition, the relay conductor of the present invention includes a first bus bar, a second bus bar, and a fixing member that fixes them, and the first bus bar and the second bus bar are different from each other on one side of the fixing member. Has a welding end for welding with the conductor and a fastening end for fastening with another conductor on the other side of the fixing member, and the action point of the force relating to the first bus bar from the fastening end of the first bus bar is the first action. When the point of action of the force relating to the second bus bar from the fastening end of the second bus bar is the second action point, the distance from the fastening end of the first bus bar to the first action point is It is longer than the distance from the fastening end of the two bus bars to the second point of action, and the contact area between the fixing member and the first bus bar is smaller than the contact area between the fixing member and the second bus bar.

本発明の中継導体によれば、バスバー形状や端子角度が相毎に異なる場合でも、各バスバーで発生する応力を抑制することができる。 According to the relay conductor of the present invention, it is possible to suppress the stress generated in each bus bar even when the bus bar shape and the terminal angle are different for each phase.

一実施例の中継導体を備えた車輪駆動システムWheel drive system with relay conductor of one embodiment 一実施例の中継導体の斜視図1 is a perspective view of a relay conductor according to an embodiment. 一実施例の中継導体の断面図Sectional drawing of the relay conductor of one Example

まず、図１を用いて、本発明の一実施例に係る中継導体１を用いた、車輪駆動システム１０を説明する。この車輪駆動システム１０は、電気自動車等に搭載されるものであり、直流電力を出力する直流電源１１と、直流電源１１が出力した直流電力を三相交流電力に変換するパワー半導体回路部を内蔵したインバータ１２（電力変換装置）と、三相交流電力により駆動される三相モータ１３と、ギアボックス１４と、車輪１５と、を備え、本実施例の中継導体１によって、インバータ１２のパワー半導体回路部と電気的に接続された端子（交流リレー導体板、以下、「インバータ端子２」と称する）と、三相モータ１３と電気的に接続された端子（以下、「モータ端子７」と称する）を接続している。なお、本実施例の車輪駆動システム１０においては、中継導体１がインバータ１２の筐体に固定されており、三相モータ１３がギアボックス１４の筐体に固定されているため、車両走行時のギアボックス１４の振動は、三相モータ１３のリード線とモータ端子７を介して、中継導体１やインバータ１２にも伝達する。 First, a wheel drive system 10 using a relay conductor 1 according to an embodiment of the present invention will be described with reference to FIG. This wheel drive system 10 is installed in an electric vehicle or the like, and has a built-in DC power supply 11 that outputs DC power and a power semiconductor circuit unit that converts the DC power output by the DC power supply 11 into three-phase AC power. The inverter 12 (power converter), the three-phase motor 13 driven by three-phase AC power, the gearbox 14, and the wheel 15 are provided, and the relay conductor 1 of the present embodiment allows the power semiconductor of the inverter 12. A terminal electrically connected to the circuit portion (AC relay conductor plate, hereinafter referred to as "inverter terminal 2") and a terminal electrically connected to the three-phase motor 13 (hereinafter referred to as "motor terminal 7") ) Is connected. In the wheel drive system 10 of the present embodiment, the relay conductor 1 is fixed to the casing of the inverter 12, and the three-phase motor 13 is fixed to the casing of the gearbox 14, so that the The vibration of the gearbox 14 is also transmitted to the relay conductor 1 and the inverter 12 via the lead wire of the three-phase motor 13 and the motor terminal 7.

次に、図２の斜視図を用いて、中継導体１の具体的な構成を、インバータ端子２とモータ端子７の具体的な構成と合わせて説明する。ここに例示する中継導体１は、中継導体板（以下、「バスバー３」と称する）を相毎に備え、それらを樹脂製の固定部材４で一体成型したものである。また、固定部材４には、締結孔５が設けられており、ここを貫通させたネジ等により、インバータ１２の筐体に中継導体１を固定することができる。また、固定部材４は、モータ端子７側に向けて延びる被覆部６を備えており、これによりバスバー３の一部を被覆している。この被覆部６の詳細は後述する。 Next, the specific configuration of the relay conductor 1 will be described together with the specific configurations of the inverter terminal 2 and the motor terminal 7 with reference to the perspective view of FIG. The relay conductor 1 illustrated here is provided with a relay conductor plate (hereinafter, referred to as “bus bar 3 ”) for each phase, and these are integrally molded by a resin fixing member 4. Further, the fixing member 4 is provided with a fastening hole 5, and the relay conductor 1 can be fixed to the casing of the inverter 12 with a screw or the like penetrating the fastening hole 5. Further, the fixing member 4 is provided with a covering portion 6 extending toward the motor terminal 7 side, thereby covering a part of the bus bar 3. Details of this covering portion 6 will be described later.

この中継導体１において、インバータ端子２とバスバー３の一端（溶接端）は、溶接部８によって連結され、バスバー３の他端（締結端）とモータ端子７は、バスバー３の貫通穴を貫通させたネジ等の締結具９によって連結される。なお、車輪駆動システム１０を組立時には、バスバー３の一端とインバータ端子２を溶接により連結した後、バスバー３の他端にモータ端子７を締結具９で締結する。このとき、モータ端子７の先端には三相モータ１３からのリード線が予め連結されているので、このようなモータ端子７の締結作業がし易いように、各相のバスバー３の長さ（モータ端子７の位置を規定）や、モータ端子７の先端角度（リード線の向きを規定）は、相毎に異なる形態に設計されている。 In this relay conductor 1, the inverter terminal 2 and one end (welding end) of the bus bar 3 are connected by a welded portion 8, and the other end (fastening end) of the bus bar 3 and the motor terminal 7 are passed through the through hole of the bus bar 3. They are connected by fasteners 9 such as screws. When assembling the wheel drive system 10, one end of the bus bar 3 and the inverter terminal 2 are connected by welding, and then the motor terminal 7 is fastened to the other end of the bus bar 3 by the fastener 9. At this time, since the lead wires from the three-phase motor 13 are previously connected to the tips of the motor terminals 7, the length of the bus bar 3 of each phase (to facilitate the fastening work of the motor terminals 7 ( The position of the motor terminal 7 is specified) and the tip angle of the motor terminal 7 (the direction of the lead wire is specified) is designed to be different for each phase.

図２から明らかなように、本実施例の中継導体１においては、被覆部６の長さ（或いは、バスバー３と被覆部６の接触面積）は相毎に異なっている。以下、図３を用いて、被覆部６の長さ（接触面積）を相毎に異ならせた理由を説明する。 As is clear from FIG. 2, in the relay conductor 1 of the present embodiment, the length of the covering portion 6 (or the contact area between the bus bar 3 and the covering portion 6) is different for each phase. Hereinafter, the reason why the length (contact area) of the covering portion 6 is different for each phase will be described with reference to FIG.

図３は、図２に例示した中継導体１の断面図であり、左から順に、Ｗ相、Ｖ相、Ｕ相のバスバー３Ｕ、３Ｖ、３Ｗを含む位置での断面図である。図２からも明らかなように、本実施例の中継導体１では、バスバー３の長さを、３Ｕ＞３Ｖ＞３Ｗ としている。また、図３に示すように、断面が略コ字状のモータ端子７を、Ｕ相とＷ相のモータ端子７Ｕ、７Ｗでは上側が開放方向となるように、Ｖ相のモータ端子７Ｖでは下側が開放方向となるように、締結している。 FIG. 3 is a cross-sectional view of the relay conductor 1 illustrated in FIG. 2, and is a cross-sectional view at positions including W-phase, V-phase, and U-phase bus bars 3 U , 3 V , and 3 W in order from the left. As is clear from FIG. 2, in the relay conductor 1 of this embodiment, the length of the bus bar 3 is 3 U >3 V >3 W. Further, as shown in FIG. 3, the motor terminal 7 having a substantially U-shaped cross section is used for the V-phase motor terminal 7 so that the upper side of the U-phase and W-phase motor terminals 7 U and 7 W is in the opening direction. In V , they are fastened so that the lower side is the opening direction.

上述したように、本実施例の中継導体１のバスバー３や溶接部８には、三相モータ１３、リード線、モータ端子７を介して、車両走行時のギアボックス１４の振動が伝達される。また、モータ端子７の締結時には、バスバー３を介して締結荷重が溶接部８に伝達される。そして、溶接部８に応力が過度に集中すると、溶接部８が破断する惧れがあるため、本実施例の中継導体１では、各相のバスバー３に発生する応力を抑制することで、溶接部８での過度な応力集中を抑止する。 As described above, the vibration of the gear box 14 when the vehicle is traveling is transmitted to the bus bar 3 and the welded portion 8 of the relay conductor 1 of the present embodiment via the three-phase motor 13, the lead wire, and the motor terminal 7. .. Further, when the motor terminal 7 is fastened, the fastening load is transmitted to the welded portion 8 via the bus bar 3. Then, if the stress is excessively concentrated on the welded portion 8, the welded portion 8 may be broken. Therefore, in the relay conductor 1 of the present embodiment, the stress generated in the bus bar 3 of each phase is suppressed, so that the welding is performed. The excessive stress concentration in the portion 8 is suppressed.

ここで、図３のＷ相の断面図を例に、ギアボックス１４の振動に起因する応力が、溶接部８Ｗに伝達される仕組みを説明する。ギアボックス１４の振動は、三相モータ１３のリード線を介して、モータ端子７Ｗの先端側（力点Ｐ１Ｗ）に伝達される。力点Ｐ１Ｗに伝わった振動は、モータ端子７Ｗの水平部とバスバー３Ｗが交差する支点Ｐ２Ｗを経由して、被覆部６Ｗの端部である作用点Ｐ３Ｗに伝達される。このため、力点Ｐ１Ｗと支点Ｐ２Ｗ間の距離Ｌ１Ｗと、支点Ｐ２Ｗと作用点Ｐ３Ｗ間の距離Ｌ２Ｗからなる経路が、バスバー３Ｗにおける応力伝達経路となる。バスバー３Ｗを被覆する被覆部６Ｗは、固定部材４と一体成型されているため、仮にバスバー３Ｗだけが振動した場合であっても、固定部材４を介して、各相の溶接部８Ｕ、８Ｖ、８Ｗに振動が伝達される。モータ端子７の振動は各相とも略等しいが、固定部材４に伝達される応力の大きさは、バスバー３の応力伝達経路の長さに依存するため、各相のバスバー３から固定部材４に伝わる応力を等しくするには、各相のバスバー３における応力伝達経路の距離を略等しくすれば良い。 Here, the mechanism in which the stress caused by the vibration of the gearbox 14 is transmitted to the welded portion 8 W will be described by taking the cross-sectional view of the W phase in FIG. The vibration of the gearbox 14 is transmitted to the tip end side (power point P 1W ) of the motor terminal 7 W via the lead wire of the three-phase motor 13. The vibration transmitted to the power point P 1W is transmitted to the action point P 3W , which is the end portion of the covering portion 6 W , via the fulcrum P 2W where the horizontal portion of the motor terminal 7 W and the bus bar 3 W intersect. Therefore, the distance L 1W between the power point P 1W and the fulcrum P 2W, the route from the distance L 2W between the fulcrum P 2W point of action P 3W, the stress pathways in the busbar 3 W. Covering part 6 W for covering the bus bars 3 W, because they are integrally molded with the fixing member 4, even if the case where only the bus bar 3 W vibrates, via the fixing member 4, each phase of the weld 8 Vibration is transmitted to U , 8 V , and 8 W. The vibration of the motor terminal 7 is substantially the same for each phase, but the magnitude of the stress transmitted to the fixing member 4 depends on the length of the stress transmission path of the bus bar 3, so that the phase from the bus bar 3 of each phase to the fixing member 4 is changed. In order to make the transmitted stresses equal, the distances of the stress transmission paths in the bus bars 3 of the respective phases may be made substantially equal.

従って、本実施例の中継導体１では、長さの異なる被覆部６Ｕ、６Ｖ、６Ｗを設けることで、下記の式１のように各相の応力伝達経路の長さを略等しくし、バスバー３Ｕ、３Ｖ、３Ｗに発生する応力を抑制（均一化）できるようにするとともに、各相の溶接部８Ｕ、８Ｖ、８Ｗに過度な応力が発生する状況を回避できるようにした。 Accordingly, the relay conductor 1 of this embodiment, by providing the different coating unit 6 U, 6 V, 6 W lengths substantially equal the length of each phase of the stress pathway as Equation 1 below , The stress generated in the bus bars 3 U , 3 V , and 3 W can be suppressed (uniformized), and the situation in which excessive stress is generated in the welded parts 8 U , 8 V , and 8 W of each phase can be avoided. I did it.

Ｌ１Ｕ＋Ｌ２Ｕ ＝ Ｌ１Ｖ＋Ｌ２Ｖ ＝ Ｌ１Ｗ＋Ｌ２Ｗ … （式１）
すなわち、図３の例では、Ｕ相とＷ相の支点Ｐ２Ｕ、Ｐ２Ｗが締結具９よりも下方に位置することを考慮し、被覆部６Ｕ、６Ｗを長くした。一方、Ｖ相の支点Ｐ２Ｖが締結具９よりも上方に位置することを考慮し、被覆部６Ｖを短くした。また、バスバー３Ｕが他よりも長いことを考慮し、被覆部６Ｕを長くした。この結果、モータ端子７の厚さ（距離Ｌ１）が一定という条件下では、被覆部６の長さを、６Ｕ＞６Ｗ＞６Ｖとし、何れの相においても応力伝達経路の長さを略等しくした。なお、これにより、Ｖ相における作用点Ｐ３Ｖから端部までの距離は、Ｕ相やＷ相における作用点Ｐ３から端部までの距離よりも長くなっている。 L 1U +L 2U = L 1V +L 2V = L 1W +L 2W (Equation 1)
That is, in the example of FIG. 3, considering that the fulcrums P 2U and P 2W of the U phase and the W phase are located below the fastener 9, the covering portions 6 U and 6 W are made longer. On the other hand, considering that the fulcrum P2V of the V phase is located above the fastener 9, the covering portion 6V is shortened. Further, considering that the bus bar 3 U is longer than the others, the covering portion 6 U is made longer. As a result, under the condition that the thickness of the motor terminal 7 (distance L 1 ) is constant, the length of the covering portion 6 is set to 6 U >6 W >6 V, and the length of the stress transmission path is set in any phase. Were made approximately equal. As a result, the distance from the action point P 3V in the V phase to the end is longer than the distance from the action point P 3 in the U phase and the W phase to the end.

さらに、図３に示したように、各相の支点Ｐ２と作用点Ｐ３の間には、バスバー３の一部を厚さ方向に撓ませた略Ｓ字断面形状の屈曲部を設けることが望ましい。これは、応力伝達経路の一部に屈曲部を設けることで、振動に起因する応力を吸収することができ、屈曲部を設けない構成に比べ、バスバー３を経由して溶接部８に伝達される応力をより小さくすることができるからである。 Further, as shown in FIG. 3, between the fulcrum P 2 and the action point P 3 of each phase, a bent portion having a substantially S-shaped cross section in which a part of the bus bar 3 is bent in the thickness direction is provided. Is desirable. This is because the stress caused by the vibration can be absorbed by providing the bent portion in a part of the stress transmission path, and the stress is transmitted to the welded portion 8 via the bus bar 3 as compared with the configuration in which the bent portion is not provided. This is because the stress that occurs can be made smaller.

以上で説明したように、本実施例の中継導体１によれば、バスバー形状や端子角度が相毎に異なる場合でも、各バスバーで発生する応力を抑制することができ、溶接部の破断を抑制することができる。 As described above, according to the relay conductor 1 of the present embodiment, even when the bus bar shape and the terminal angle are different for each phase, the stress generated in each bus bar can be suppressed, and the fracture of the welded part can be suppressed. can do.

１ 中継導体、
２、２Ｕ、２Ｖ、２Ｗ インバータ端子、
３、３Ｕ、３Ｖ、３Ｗ バスバー
４ 固定部材
５ 締結孔
６、６Ｕ、６Ｖ、６Ｗ 被覆部
７、７Ｕ、７Ｖ、７Ｗ モータ端子
８、８Ｕ、８Ｖ、８Ｗ 溶接部、
９、９Ｕ、９Ｖ、９Ｗ 締結具、
１０ 車輪駆動システム、
１１ 直流電源、
１２ インバータ、
１３ 三相モータ、
１４ ギアボックス、
１５ 車輪、
Ｐ１、Ｐ１Ｕ、Ｐ１Ｖ、Ｐ１Ｗ 力点
Ｐ２、Ｐ２Ｕ、Ｐ２Ｖ、Ｐ２Ｗ 支点
Ｐ３、Ｐ３Ｕ、Ｐ３Ｖ、Ｐ３Ｗ 作用点 1 relay conductor,
2, 2 U , 2 V , 2 W inverter terminals,
3, 3 U , 3 V , 3 W bus bar 4 fixing member 5 fastening hole 6, 6 U , 6 V , 6 W coating part 7, 7 U , 7 V , 7 W motor terminal 8, 8 U , 8 V , 8 W weld,
9, 9 U , 9 V , 9 W fasteners,
10 wheel drive system,
11 DC power supply,
12 inverters,
13 three-phase motor,
14 gearbox,
15 wheels,
P 1 , P 1U , P 1V , P 1W Power point P 2 , P 2U , P 2V , P 2W fulcrum P 3 , P 3U , P 3V , P 3W action point

Claims (4)

第１バスバーと、第２バスバーと、それらを固定する固定部材と、を備えた中継導体であって、
前記第１バスバーと前記第２バスバーは夫々、前記固定部材の一方側で他の導体と溶接する溶接端と、前記固定部材の他方側で他の導体と締結する締結端を有し、
前記固定部材は、前記第１バスバーに締結された他の導体の力点から前記固定部材までの距離と、前記第２バスバーに締結された他の導体の力点から前記固定部材までの距離と、が等しくなるように、前記第１バスバーを覆う第１被覆部と、前記第２バスバーを覆う第２被覆部と、を設けたことを特徴とする中継導体。 A relay conductor comprising a first bus bar, a second bus bar, and a fixing member for fixing them,
Each of the first bus bar and the second bus bar has a welding end for welding the other conductor on one side of the fixing member, and a fastening end for fastening the other conductor on the other side of the fixing member,
The fixing member has a distance from a force point of another conductor fastened to the first bus bar to the fixing member, and a distance from a force point of another conductor fastened to the second bus bar to the fixing member. A relay conductor comprising: a first coating portion that covers the first bus bar and a second coating portion that covers the second bus bar so as to be equal to each other. 第１バスバーと、第２バスバーと、それらを固定する固定部材と、を備えた中継導体であって、
前記第１バスバーと前記第２バスバーは夫々、前記固定部材の一方側で他の導体と溶接する溶接端と、前記固定部材の他方側で他の導体と締結する締結端を有し、
前記第１バスバーの締結端から当該第１バスバーに係る力の作用点を第１作用点とし、前記第２バスバーの締結端から当該第２バスバーに係る力の作用点を第２作用点としたとき、
前記第１バスバーの締結端から前記第１作用点までの距離は、前記第２バスバーの締結端から前記第２作用点までの距離よりも長く、
前記固定部材と前記第１バスバーの接触面積は、前記固定部材と前記第２バスバーの接触面積よりも小さいことを特徴とする中継導体。 A relay conductor comprising a first bus bar, a second bus bar, and a fixing member for fixing them,
Each of the first bus bar and the second bus bar has a welding end for welding the other conductor on one side of the fixing member, and a fastening end for fastening the other conductor on the other side of the fixing member,
The action point of the force related to the first bus bar from the fastening end of the first bus bar is the first action point, and the action point of the force related to the second bus bar from the fastening end of the second bus bar is the second action point. When
The distance from the fastening end of the first bus bar to the first action point is longer than the distance from the fastening end of the second bus bar to the second action point,
The contact area between the fixing member and the first bus bar is smaller than the contact area between the fixing member and the second bus bar. 請求項１または請求項２に記載の中継導体であって、
前記第１バスバーと前記第２バスバーは、前記固定部材よりも締結端側に、厚さ方向に撓ませた屈曲部を設けたことを特徴とする中継導体。 The relay conductor according to claim 1 or 2, wherein
The relay conductor, wherein the first bus bar and the second bus bar are provided with a bent portion bent in a thickness direction on a fastening end side with respect to the fixing member. 請求項１から請求項３の何れか一項に記載の中継導体を有する電力変換装置であって、
前記第１バスバーと前記第２バスバーは、交流電力を伝達する交流電力用バスバーであり、
前記溶接端側の他の導体は、直流電力を交流電力に変換するパワー半導体回路部と接続されていることを特徴とする電力変換装置。 A power conversion device comprising the relay conductor according to any one of claims 1 to 3,
The first bus bar and the second bus bar are AC power bus bars that transfer AC power,
The other conductor on the welding end side is connected to a power semiconductor circuit unit that converts DC power into AC power.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100015519A1 (en) * 2007-02-09 2010-01-21 Johnson Controls- Saft Advanced Power Solutions Llc Buss bar for batteries
JP2015178806A (en) * 2014-03-19 2015-10-08 三菱重工オートモーティブサーマルシステムズ株式会社 Inverter integrated electric compressor
WO2017018278A1 (en) * 2015-07-30 2017-02-02 サンコール株式会社 Bus bar

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100015519A1 (en) * 2007-02-09 2010-01-21 Johnson Controls- Saft Advanced Power Solutions Llc Buss bar for batteries
JP2015178806A (en) * 2014-03-19 2015-10-08 三菱重工オートモーティブサーマルシステムズ株式会社 Inverter integrated electric compressor
WO2017018278A1 (en) * 2015-07-30 2017-02-02 サンコール株式会社 Bus bar

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