JP6976730B2

JP6976730B2 - Bus bar

Info

Publication number: JP6976730B2
Application number: JP2017114488A
Authority: JP
Inventors: 克今井; 泰孝宮崎
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2017-06-09
Filing date: 2017-06-09
Publication date: 2021-12-08
Anticipated expiration: 2037-06-09
Also published as: JP2018206738A

Description

本発明は、金属製のバスバーに関するものである。 The present invention relates to a metal bus bar.

従来、例えば複数の電源セルを備える電源モジュール等において、隣り合う電源セルの電極どうしを電気的に接続する部材等に金属製のバスバーが用いられている（例えば、特許文献１参照。）。このようなバスバーによる接続形態の最もシンプルで強固な接続形態の一例として、バスバーを帯板状に形成しておき、その一端を一方の接続対象にネジ止め固定し、他端を他方の接続対象にネジ止め固定する形態が挙げられる。 Conventionally, for example, in a power supply module having a plurality of power supply cells, a metal bus bar is used as a member or the like for electrically connecting electrodes of adjacent power supply cells (see, for example, Patent Document 1). As an example of the simplest and strongest connection form of such a bus bar connection form, a bus bar is formed in a strip shape, one end thereof is screwed and fixed to one connection target, and the other end is the other connection target. There is a form of fixing with screws.

特開２００６−４０８１９号公報Japanese Unexamined Patent Publication No. 2006-40819

しかしながら、上記のような接続形態では、バスバーの製造公差や接続対象の製造公差等に起因してバスバーと接続対象との間に位置ずれが生じ、その結果、バスバーと接続対象との接続箇所に応力負荷が集中して掛かる可能性がある。 However, in the above connection form, a positional shift occurs between the bus bar and the connection target due to the manufacturing tolerance of the bus bar, the manufacturing tolerance of the connection target, etc., and as a result, the connection point between the bus bar and the connection target becomes The stress load may be concentrated.

従って、本発明は、上記のような問題に着目し、接続対象との接続箇所に対する応力負荷の集中を抑制することができるバスバーを提供することを目的とする。 Therefore, it is an object of the present invention to pay attention to the above-mentioned problems and to provide a bus bar capable of suppressing concentration of stress load on a connection point with a connection target.

上記課題を解決するために、本発明のバスバーは、金属製のバスバーであって、第１延在面に沿って平板状に形成された第１接続部と、前記第１延在面と同一、又は当該第１延在面と平行な第２延在面に沿って平板状に形成され、前記第１延在面又は前記第２延在面に対する平面視で、前記第１接続部と離れた位置に配置される第２接続部と、帯板状に形成されて前記第１接続部及び前記第２接続部を互いに繋ぐ帯板部と、を備え、前記帯板部が、前記第１延在面及び前記第２延在面の面外方向に幅方向が沿うように帯状に延在する本体部、及び、当該本体部から前記幅方向に延出して中途で湾曲して折り返されて逆向きに延出するＵ字状に形成されて、前記第１接続部及び前記第２接続部のうち少なくとも一方の接続部を前記本体部に繋げる連結部、を備えていることを特徴とする。 In order to solve the above problems, the bus bar of the present invention is a metal bus bar, and is the same as the first connecting portion formed in a flat plate shape along the first extending surface and the first extending surface. Or, it is formed in a flat plate shape along the second extending surface parallel to the first extending surface, and is separated from the first connecting portion in a plan view with respect to the first extending surface or the second extending surface. A second connecting portion arranged at a vertical position and a strip portion formed in a strip shape to connect the first connecting portion and the second connecting portion to each other are provided, and the strip portion is the first. The main body portion extending in a band shape along the width direction along the extending surface and the second extending surface in the out-of-plane direction, and the main body portion extending in the width direction from the main body portion and being curved and folded back in the middle. It is characterized in that it is formed in a U shape extending in the opposite direction, and includes a connecting portion that connects at least one of the first connecting portion and the second connecting portion to the main body portion. ..

本発明のバスバーでは、帯板部において、上記の少なくとも一方の接続部と本体部とがＵ字状の連結部を介して繋がれている。これにより、製造公差等に起因してバスバーと接続対象との間に位置ずれが生じたとしても、この位置ずれによって接続箇所に生じる応力負荷が、Ｕ字状の連結部が撓むことで吸収される。つまり、本発明のバスバーによれば、接続対象との接続箇所に対する応力負荷の集中を抑制することができる。 In the bus bar of the present invention, in the strip portion, at least one of the above connecting portions and the main body portion are connected via a U-shaped connecting portion. As a result, even if a misalignment occurs between the bus bar and the connection target due to manufacturing tolerances, etc., the stress load generated at the connection point due to this misalignment is absorbed by the bending of the U-shaped connecting portion. Will be done. That is, according to the bus bar of the present invention, it is possible to suppress the concentration of stress load on the connection point with the connection target.

バスバーの一実施形態を示す図である。It is a figure which shows one Embodiment of a bus bar. 図１に示されているバスバーの展開体を示す図である。It is a figure which shows the development body of the bus bar shown in FIG. 図１に示されているバスバーを、図中の矢印Ｖ１１方向から見た側面図である。It is a side view of the bus bar shown in FIG. 1 as seen from the direction of arrow V11 in the figure. 図１及び図３に示されているバスバーが、隣り合って配列された２つの電源セルを直列接続するように設置された様子を示す図である。It is a figure which shows the appearance that the bus bar shown in FIGS. 1 and 3 is installed so as to connect two power cells arranged adjacent to each other in series. 図１〜図４に示されている実施形態のバスバーと比較するための比較例を示す図である。It is a figure which shows the comparative example for comparison with the bus bar of the embodiment shown in FIGS. 1 to 4. 図５に示されている比較例のバスバーを、図中の矢印Ｖ５１方向から見た側面図である。FIG. 5 is a side view of the bus bar of the comparative example shown in FIG. 5 as viewed from the direction of arrow V51 in the drawing. 図５及び図６に示されている比較例のバスバーが、隣り合って配列された２つの電源セルを直列接続するように設置された様子を示す図である。It is a figure which shows the appearance that the bus bar of the comparative example shown in FIGS. 5 and 6 is installed so as to connect two power cells arranged adjacent to each other in series. 別例のバスバーを示す図である。It is a figure which shows the bus bar of another example. 図８に示されている別例のバスバーの展開体を示す図である。It is a figure which shows the development body of the bus bar of another example shown in FIG.

以下、バスバーの一実施形態について説明する。 Hereinafter, one embodiment of the bus bar will be described.

図１は、バスバーの一実施形態を示す図である。 FIG. 1 is a diagram showing an embodiment of a bus bar.

図１に示されているバスバー１は、後述するように２つの電源セルを直列接続するための金属製の部材であり、第１接続部１１と、第２接続部１２と、帯板部１３と、を備えている。 The bus bar 1 shown in FIG. 1 is a metal member for connecting two power supply cells in series as described later, and is a first connection portion 11, a second connection portion 12, and a strip portion 13. And have.

第１接続部１１は、一方の電源セルの電極に接続される部位であり、その電極の接続面を含む第１延在面１１ａに沿って矩形平板状に形成されている。その中央には、電極とネジ止めにより接続されるための貫通孔１１１が設けられている。第２接続部１２は、他方の電源セルの電極に接続される部位であり、その電極の接続面を含む第２延在面１２ａに沿って矩形平板状に形成されている。その中央にも、電極とネジ止めにより接続されるための貫通孔１２１が設けられている。本実施形態では、第２延在面１２ａは、上記の第１延在面１１ａと同一の面となっている。ただし、第２接続部１２は、第１延在面１１ａ又は第２延在面１２ａに対する平面視で、第１接続部１１と離れた位置に配置されている。 The first connection portion 11 is a portion connected to the electrode of one power cell, and is formed in a rectangular flat plate shape along the first extending surface 11a including the connection surface of the electrode. In the center thereof, a through hole 111 for being connected to the electrode by screwing is provided. The second connection portion 12 is a portion connected to the electrode of the other power cell, and is formed in a rectangular flat plate shape along the second extending surface 12a including the connection surface of the electrode. A through hole 121 for connecting to the electrode by screwing is also provided in the center thereof. In the present embodiment, the second extending surface 12a is the same surface as the first extending surface 11a described above. However, the second connecting portion 12 is arranged at a position away from the first connecting portion 11 in a plan view with respect to the first extending surface 11a or the second extending surface 12a.

帯板部１３は、帯板状に形成されて第１接続部１１及び第２接続部１２を互いに繋ぐ部位である。この帯板部１３は、本体部１３１と、第１連結部１３２と、第２連結部１３３と、を備えている。 The strip portion 13 is a portion formed in the shape of a strip and connecting the first connecting portion 11 and the second connecting portion 12 to each other. The strip portion 13 includes a main body portion 131, a first connecting portion 132, and a second connecting portion 133.

本体部１３１は、第１延在面１１ａ及び第２延在面１２ａの面外方向に幅方向Ｄ１１が沿うように帯状に延在する。そして、本体部１３１の両端部それぞれに、第１接続部１１に繋がる第１連結部１３２、及び第２接続部１２に繋がる第２連結部１３３、が設けられている。また、第１接続部１１及び第２接続部１２それぞれが、本体部１３１の幅方向Ｄ１１の中途位置に配置されている。 The main body 131 extends in a strip shape along the width direction D11 in the out-of-plane direction of the first extending surface 11a and the second extending surface 12a. A first connecting portion 132 connected to the first connecting portion 11 and a second connecting portion 133 connected to the second connecting portion 12 are provided at both ends of the main body portion 131. Further, each of the first connection portion 11 and the second connection portion 12 is arranged at an intermediate position of the main body portion 131 in the width direction D11.

これら第１連結部１３２及び第２連結部１３３は、何れも、本体部１３１から幅方向Ｄ１１に延出して中途で湾曲して折り返されて逆向きに延出するＵ字状に形成された部位となっている。また、第１連結部１３２と第２連結部１３３とは、形成位置と延出方向とを除いて、湾曲半径や湾曲幅が互いに同等に形成されている。 Both the first connecting portion 132 and the second connecting portion 133 extend from the main body portion 131 in the width direction D11, are curved in the middle, are folded back, and extend in the opposite direction. It has become. Further, the first connecting portion 132 and the second connecting portion 133 are formed to have the same bending radius and bending width except for the forming position and the extending direction.

ここで、本実施形態では、第１接続部１１が、本体部１３１の一端部１３１ａにおける幅方向Ｄ１１の一方側の縁１３１ａ−１に第１連結部１３２を介して繋がっている。また、第２接続部１２が、本体部１３１の他端部１３１ｂにおける幅方向Ｄ１１の他方側の縁１３１ｂ−１に第２連結部１３３を介して繋がっている。 Here, in the present embodiment, the first connecting portion 11 is connected to the one-sided edge 131a-1 of the width direction D11 at one end portion 131a of the main body portion 131 via the first connecting portion 132. Further, the second connecting portion 12 is connected to the other side edge 131b-1 in the width direction D11 at the other end portion 131b of the main body portion 131 via the second connecting portion 133.

このようなバスバー１は、次のような形状の展開体を折り曲げる板金加工によって形成される。 Such a bus bar 1 is formed by sheet metal processing for bending a developed body having the following shape.

図２は、図１に示されているバスバーの展開体を示す図である。 FIG. 2 is a diagram showing an expanded body of the bus bar shown in FIG.

この図２に示されている展開体２では、本体部１３１の一端部１３１ａにおける一方側の縁１３１ａ−１から湾曲前の第１連結部１３２と第１接続部１１が直線状に延出している。本体部１３１の他端部１３１ｂにおける他方側の縁１３１ｂ−１からは湾曲前の第２連結部１３３と第２接続部１２が直線状に延出している。この結果、展開体２は、したＺ字型の形状となる。本実施形態では、このような展開体２が一枚の金属板から打抜き加工等によって切り出される。このとき、Ｚ字型の展開体２は、図２中に点線で記載したように一枚の金属板に複数個を、Ｚ字の各直線部分が互いに近接して且つ平行に並ぶように配列して描くことができる。 In the developed body 2 shown in FIG. 2, the first connecting portion 132 and the first connecting portion 11 before bending extend linearly from the one-sided edge 131a-1 of the one end portion 131a of the main body portion 131. There is. The second connecting portion 133 and the second connecting portion 12 before bending extend linearly from the other side edge 131b-1 of the other end portion 131b of the main body portion 131. As a result, the developed body 2 has a Z-shaped shape. In the present embodiment, such a developed body 2 is cut out from one metal plate by punching or the like. At this time, as shown by the dotted line in FIG. 2, a plurality of Z-shaped developing bodies 2 are arranged on one metal plate so that the linear portions of the Z-shape are arranged in close proximity to each other and in parallel. Can be drawn.

図３は、図１に示されているバスバーを、図中の矢印Ｖ１１方向から見た側面図である。 FIG. 3 is a side view of the bus bar shown in FIG. 1 as viewed from the direction of arrow V11 in the drawing.

この図３及び上記の図１に示されているように、本実施形態では、第１連結部１３２は、上記の一方側の縁１３１ａ−１から、幅方向Ｄ１１について、第１延出方向Ｄ１１１に延出して第１接続部１１を一方側の縁１３１ａ−１に繋げる。また、第２連結部１３３は、他方側の縁１３１ｂ−１から第１延出方向Ｄ１１１とは逆向きの第２延出方向Ｄ１１２に延出して第２接続部１２を他方側の縁１３１ｂ−１に繋げる。 As shown in FIG. 3 and FIG. 1 above, in the present embodiment, the first connecting portion 132 has a first extending direction D111 with respect to the width direction D11 from the one side edge 131a-1. The first connection portion 11 is connected to the edge 131a-1 on one side. Further, the second connecting portion 133 extends from the other side edge 131b-1 to the second extending direction D112 opposite to the first extending direction D111, and extends the second connecting portion 12 to the other side edge 131b-. Connect to 1.

ここで、帯板部１３では、幅方向Ｄ１１について、一端部１３１ａにおける一方側の縁１３１ａ−１が第１連結部１３２の湾曲半径に応じたズレ量ｄ１１で、他端部１３１ｂにおける同じ側の縁１３１ｂ−２から第２延出方向Ｄ１１２にずれて位置している。逆に、他端部１３１ｂにおける他方側の縁１３１ｂ−１が第２連結部１３３の湾曲半径に応じたズレ量で一端部１３１ａにおける同じ側の縁１３１ａ−２から第１延出方向Ｄ１１１にずれて位置している。このとき、上述したように、第１連結部１３２と第２連結部１３３とでは湾曲半径が互いに同等に形成されている。このため、他端部１３１ｂにおける他方側の縁１３１ｂ−１の幅方向Ｄ１１についてのズレ量も、一端部１３１ａにおける一方側の縁１３１ａ−１のズレ量ｄ１１と同等となる。そして、本体部１３１は、一端部１３１ａと他端部１３１ｂとの間で幅方向Ｄ１１についてこのような相対的な位置関係が成り立つように、幅方向Ｄ１１に傾いて斜行して形成されている。 Here, in the strip portion 13, in the width direction D11, the one-sided edge 131a-1 at the one end portion 131a has a deviation amount d11 according to the bending radius of the first connecting portion 132, and the same side at the other end portion 131b. It is located offset from the edge 131b-2 in the second extension direction D112. On the contrary, the other side edge 131b-1 of the other end portion 131b is displaced from the same side edge 131a-2 of the one end portion 131a in the first extension direction D111 by the amount of deviation according to the bending radius of the second connecting portion 133. Is located. At this time, as described above, the radius of curvature of the first connecting portion 132 and the second connecting portion 133 are formed to be equal to each other. Therefore, the amount of deviation of the other side edge 131b-1 in the other end portion 131b in the width direction D11 is also the same as the amount of deviation d11 of the one side edge 131a-1 in the one end portion 131a. The main body 131 is formed so as to be inclined in the width direction D11 so that such a relative positional relationship with respect to the width direction D11 is established between the one end 131a and the other end 131b. ..

また、本実施形態では、第１連結部１３２は、本体部１３の表裏面のうちの第１面１３１ｃの側で第１接続部１１を、当該第１接続部１１が第１面１３１ｃから離れる第１突出方向Ｄ１２１に突出して延在するように、本体部１３１の一端部１３１ａに繋げている。また、第２連結部１３３は、本体部１３の表裏面のうちの第２面１３１ｄの側で第２接続部１２を、当該第２接続部１２が第２面１３１ｄから離れる第２突出方向Ｄ１２２に突出して延在するように、本体部１３１の他端部１３１ｂに繋げている。 Further, in the present embodiment, the first connecting portion 132 separates the first connecting portion 11 on the side of the first surface 131c of the front and back surfaces of the main body portion 13, and the first connecting portion 11 separates from the first surface 131c. It is connected to one end 131a of the main body 131 so as to project and extend in the first protruding direction D121. Further, the second connecting portion 133 has a second connecting portion 12 on the side of the second surface 131d of the front and back surfaces of the main body portion 13, and a second protruding direction D122 in which the second connecting portion 12 is separated from the second surface 131d. It is connected to the other end 131b of the main body 131 so as to project and extend.

そして、本体部１３１では、厚み方向Ｄ１２について、一端部１３１ａが、第１連結部１３２の湾曲幅に応じたズレ量ｗ１１で他端部１３１ｂから第２突出方向Ｄ１２２にずれて位置している。逆に、他端部１３１ｂも、第２連結部１３３の湾曲幅に応じたズレ量で一端部１３１ａから第１突出方向Ｄ１２１にずれて位置している。ここで、上述したように、第１連結部１３２と第２連結部１３３とでは湾曲幅が互いに同等に形成されている。このため、他端部１３１ｂの厚み方向Ｄ１２についてのズレ量も、一端部１３１ａのズレ量ｗ１１と同等となる。そして、本体部１３１は、一端部１３１ａと他端部１３１ｂとの間で厚み方向Ｄ１２についてこのような相対的な位置関係が成り立つように、厚み方向Ｄ１２にも傾いて斜行して形成されている。 Then, in the main body 131, one end 131a is displaced from the other end 131b in the second protruding direction D122 by a deviation amount w11 according to the bending width of the first connecting portion 132 in the thickness direction D12. On the contrary, the other end portion 131b is also positioned so as to be displaced from the one end portion 131a in the first protruding direction D121 by a deviation amount corresponding to the bending width of the second connecting portion 133. Here, as described above, the curved widths of the first connecting portion 132 and the second connecting portion 133 are formed to be equal to each other. Therefore, the deviation amount of the other end portion 131b in the thickness direction D12 is also the same as the deviation amount w11 of the one end portion 131a. The main body 131 is formed so as to be inclined and oblique in the thickness direction D12 so that such a relative positional relationship with respect to the thickness direction D12 is established between the one end 131a and the other end 131b. There is.

図４は、図１及び図３に示されているバスバーが、隣り合って配列された２つの電源セルを直列接続するように設置された様子を示す図である。 FIG. 4 is a diagram showing a state in which the bus bars shown in FIGS. 1 and 3 are installed so as to connect two power cells arranged adjacent to each other in series.

この図４の例では、第１電源セル３１と第２電源セル３２とが、プラス電極３１１，３２１どうし、及び、マイナス電極３１２，３２２どうしが互いに隣り合うように配列されている。プラス電極３１１，３２１及びマイナス電極３１２，３２２は、何れも各セル表面３１３，３２３から突出した矩形状の突起台として形成されており、セル表面３１３，３２３からの高さは互いに同一となっている。図１に示されている第１延在面１１ａ及び第２延在面１２ａは、プラス電極３１１，３２１及び、マイナス電極３１２，３２２の各上面を含む面となっている。本実施形態のバスバー１では、これら同一高さのプラス電極３１１，３２１やマイナス電極３１２，３２２に重ねられて接続されるように、第１接続部１１や第２接続部１２が、互いに同一の第１延在面１１ａ及び第２延在面１２ａに沿って形成されている。 In the example of FIG. 4, the first power supply cell 31 and the second power supply cell 32 are arranged so that the positive electrodes 311, 321 and the negative electrodes 312 and 322 are adjacent to each other. The positive electrodes 311, 321 and the negative electrodes 312 and 322 are both formed as rectangular protrusions protruding from the cell surfaces 313 and 323, and the heights from the cell surfaces 313 and 323 are the same. There is. The first extending surface 11a and the second extending surface 12a shown in FIG. 1 are surfaces including the upper surfaces of the positive electrodes 311, 321 and the negative electrodes 312, 322. In the bus bar 1 of the present embodiment, the first connecting portion 11 and the second connecting portion 12 are the same as each other so as to be overlapped and connected to the positive electrodes 311, 321 and the negative electrodes 312, 322 of the same height. It is formed along the first extending surface 11a and the second extending surface 12a.

図４には、第１電源セル３１と第２電源セル３２とを直列接続するための、バスバー１の設置形態として、次の２例が並べて示されている。 FIG. 4 shows the following two examples side by side as an installation mode of the bus bar 1 for connecting the first power supply cell 31 and the second power supply cell 32 in series.

第１の設置形態は、第１電源セル３１のマイナス電極３１２及び第２電源セル３２のプラス電極３２１を繋いでバスバー１が設置された設置形態である。この第１の設置形態では、第１電源セル３１のマイナス電極３１２にバスバー１の第２接続部１２が接続され、第２電源セル３２のプラス電極３２１にバスバー１の第１接続部１１が接続されている。このとき、第２連結部１３３が、第１電源セル３１のマイナス電極３１２と、第２電源セル３２のマイナス電極３２２と、の間の空間に収まる。そして、第１連結部１３２が、第１電源セル３１及び第２電源セル３２のプラス電極３１１，３２１の側で突出した状態となる。 The first installation mode is an installation mode in which the bus bar 1 is installed by connecting the negative electrode 312 of the first power supply cell 31 and the positive electrode 321 of the second power supply cell 32. In this first installation mode, the second connection portion 12 of the bus bar 1 is connected to the negative electrode 312 of the first power supply cell 31, and the first connection portion 11 of the bus bar 1 is connected to the positive electrode 321 of the second power supply cell 32. Has been done. At this time, the second connecting portion 133 fits in the space between the negative electrode 312 of the first power supply cell 31 and the negative electrode 322 of the second power supply cell 32. Then, the first connecting portion 132 is in a state of protruding on the positive electrodes 311, 321 of the first power supply cell 31 and the second power supply cell 32.

他方、第２の設置形態は、第１電源セル３１のプラス電極３１１及び第２電源セル３２のマイナス電極３２２を繋いでバスバー１が設置された設置形態である。この第２の設置形態では、上記の第１の設置形態に対してバスバー１が裏返されて更に１８０°回転された状態で設置されている。これにより、第１電源セル３１のプラス電極３１１にバスバー１の第２接続部１２が接続され、第２電源セル３２のマイナス電極３２２にバスバー１の第１接続部１１が接続されている。このときには、第１連結部１３２が、第１電源セル３１のマイナス電極３１２と、第２電源セル３２のマイナス電極３２２と、の間の空間に収まる。そして、第２連結部１３３が、第１電源セル３１及び第２電源セル３２のプラス電極３１１，３２１の側で突出した状態となる。 On the other hand, the second installation mode is an installation mode in which the bus bar 1 is installed by connecting the positive electrode 311 of the first power supply cell 31 and the negative electrode 322 of the second power supply cell 32. In this second installation mode, the bus bar 1 is turned upside down and further rotated by 180 ° with respect to the first installation mode described above. As a result, the second connection portion 12 of the bus bar 1 is connected to the positive electrode 311 of the first power supply cell 31, and the first connection portion 11 of the bus bar 1 is connected to the negative electrode 322 of the second power supply cell 32. At this time, the first connecting portion 132 fits in the space between the negative electrode 312 of the first power supply cell 31 and the negative electrode 322 of the second power supply cell 32. Then, the second connecting portion 133 is in a state of protruding on the positive electrodes 311, 321 of the first power supply cell 31 and the second power supply cell 32.

本実施形態では、バスバー１において、図３に示されているように本体部１３１の幅方向Ｄ１１について第１接続部１１及び第２接続部１２が略中央に位置している。また、この中央からの第１連結部１３２のピーク高さと、第２連結部１３３のピーク高さと、が略同等に形成されている。このため、第１電源セル３１と第２電源セル３２とにおける電極形状や電極配置と相俟って、上記のようにバスバー１を裏返して更に１８０°回転した状態で設置することが可能となっている。このように、本実施形態では、２つの設置形態において、置き方を変えるだけでバスバー１を共通に使用することができる。 In the present embodiment, in the bus bar 1, the first connection portion 11 and the second connection portion 12 are located substantially in the center of the main body portion 131 in the width direction D11 as shown in FIG. Further, the peak height of the first connecting portion 132 from the center and the peak height of the second connecting portion 133 are formed to be substantially equal to each other. Therefore, in combination with the electrode shape and electrode arrangement in the first power supply cell 31 and the second power supply cell 32, the bus bar 1 can be turned upside down and further rotated by 180 ° as described above. ing. As described above, in the present embodiment, the bus bar 1 can be commonly used in the two installation modes only by changing the placement method.

以上に説明した本実施形態のバスバー１では、第１接続部１１と本体部１３１の一端部１３１ａとがＵ字状の第１連結部１３２を介して繋がれ、第２接続部１２と本体部１３１の他端部１３１ｂとがＵ字状の第２連結部１３３を介して繋がれている。仮に、製造公差等に起因してバスバー１と、接続対象である第１電源セル３１の電極や第２電源セル３２の電極との間に位置ずれが生じたと仮定する。本実施形態のバスバー１では、このような位置ずれによって接続箇所に生じる応力負荷が、Ｕ字状の第１連結部１３２や第２連結部１３３が撓むことで吸収される。つまり、本実施形態のバスバー１によれば、接続対象との接続箇所に対する応力負荷の集中を抑制することができる。 In the bus bar 1 of the present embodiment described above, the first connecting portion 11 and one end portion 131a of the main body portion 131 are connected via the U-shaped first connecting portion 132, and the second connecting portion 12 and the main body portion are connected. The other end portion 131b of 131 is connected via a U-shaped second connecting portion 133. It is assumed that the bus bar 1 is misaligned with the electrodes of the first power supply cell 31 and the electrodes of the second power supply cell 32 to be connected due to manufacturing tolerances and the like. In the bus bar 1 of the present embodiment, the stress load generated at the connection portion due to such a misalignment is absorbed by the bending of the U-shaped first connecting portion 132 and the second connecting portion 133. That is, according to the bus bar 1 of the present embodiment, it is possible to suppress the concentration of the stress load on the connection point with the connection target.

また、本実施形態のバスバー１では、第１接続部１１及び第２接続部１２それぞれに至る第１連結部１３２及び第２連結部１３３によって上記の応力負荷が二重に吸収される。即ち、本実施形態のバスバー１によれば、接続対象との接続箇所に対する応力負荷の集中を一層抑制することができる。 Further, in the bus bar 1 of the present embodiment, the stress load is doubly absorbed by the first connecting portion 132 and the second connecting portion 133 leading to the first connecting portion 11 and the second connecting portion 12, respectively. That is, according to the bus bar 1 of the present embodiment, it is possible to further suppress the concentration of stress load on the connection point with the connection target.

また、本実施形態のバスバー１では、上述したように第１接続部１１及び第２接続部１２それぞれが、本体部１３１の幅方向Ｄ１１の中途位置に配置されている。このような位置に第１接続部１１及び第２接続部１２を配置することで、次のような効果を得ることができる。 Further, in the bus bar 1 of the present embodiment, as described above, each of the first connection portion 11 and the second connection portion 12 is arranged at an intermediate position of the main body portion 131 in the width direction D11. By arranging the first connecting portion 11 and the second connecting portion 12 at such a position, the following effects can be obtained.

図５は、図１〜図４に示されている実施形態のバスバーと比較するための比較例を示す図であり、図６は、図５に示されている比較例のバスバーを、図中の矢印Ｖ５１方向から見た側面図である。また、図７は、図５及び図６に示されている比較例のバスバーが、隣り合って配列された２つの電源セルを直列接続するように設置された様子を示す図である。 5 is a diagram showing a comparative example for comparison with the bus bar of the embodiment shown in FIGS. 1 to 4, and FIG. 6 is a diagram showing the bus bar of the comparative example shown in FIG. 5 in the figure. It is a side view seen from the direction of the arrow V51 of. Further, FIG. 7 is a diagram showing a state in which the bus bars of the comparative examples shown in FIGS. 5 and 6 are installed so as to connect two power cells arranged adjacent to each other in series.

この比較例のバスバー５も、図１〜図４に示されている実施形態のバスバー１と同様に、第１電源セル３１及び第２電源セル３２を直列接続するための部材である。 The bus bar 5 of this comparative example is also a member for connecting the first power supply cell 31 and the second power supply cell 32 in series, similarly to the bus bar 1 of the embodiment shown in FIGS. 1 to 4.

比較例のバスバー５は、矩形平板状の第１接続部５１及び第２接続部５２が帯板部５３の両端に設けられたものである。その一方で、上述した実施形態とは異なり、第１接続部５１は、帯板部５３の一端部５３１における電源セル側の縁５３１ａを折り目として単純に折り曲げられたものである。同様に、第２接続部５２も、帯板部５３の他端部５３２における電源セル側の縁５３２ａを折り目として単純に折り曲げられたものとなっている。 In the bus bar 5 of the comparative example, a rectangular flat plate-shaped first connecting portion 51 and a second connecting portion 52 are provided at both ends of the strip portion 53. On the other hand, unlike the above-described embodiment, the first connecting portion 51 is simply bent with the edge 531a on the power supply cell side of the one end portion 531 of the strip portion 53 as a crease. Similarly, the second connecting portion 52 is also simply bent with the edge 532a on the power supply cell side of the other end portion 532 of the strip portion 53 as a crease.

このような形状のために、比較例のバスバー５では、帯板部５３の幅方向Ｄ５１について、第１接続部５１及び第２接続部５２の位置は、帯板部５３の一端部５３１における電源セル側の縁５３１ａや他端部５３２における電源セル側の縁５３２ａと一致する。 Due to such a shape, in the bus bar 5 of the comparative example, in the width direction D51 of the strip portion 53, the positions of the first connection portion 51 and the second connection portion 52 are the power supplies at one end portion 531 of the strip portion 53. It coincides with the edge 531a on the cell side and the edge 532a on the power cell side at the other end 532.

従って、図６に示されているように、第１接続部５１及び第２接続部５２における電源セル側の面５１ａ，５２ａから、帯板部５３における電源セル側とは反対側の縁５３ａまでの高さ寸法Ｈ５１は、帯板部５３の幅と略同寸法となる。そして、この高さ寸法Ｈ５１が、図７に示されているように第１電源セル３１及び第２電源セル３２に取り付けられたときの、比較例のバスバー５の取付け高さとなる。 Therefore, as shown in FIG. 6, from the surfaces 51a and 52a on the power cell side of the first connection portion 51 and the second connection portion 52 to the edge 53a of the strip portion 53 opposite to the power cell side. The height dimension H51 is substantially the same as the width of the strip portion 53. Then, this height dimension H51 becomes the mounting height of the bus bar 5 of the comparative example when it is mounted on the first power supply cell 31 and the second power supply cell 32 as shown in FIG. 7.

この比較例のバスバー５に対し、上述した実施形態のバスバー１では、図３に示されているように、帯板部１３の本体部１３１の幅方向Ｄ１１について、第１接続部１１及び第２接続部１２それぞれが、本体部１３１の幅方向Ｄ１１の中途位置に配置されている。従って、第１接続部１１及び第２接続部１２における電源セル側の面１１ａ，１２ａから、帯板部１３における電源セル側とは反対側の縁までの高さ寸法Ｈ１１は、本体部１３１の幅よりも小さくなる。つまり、実施形態のバスバー１では、比較例のバスバー５に比べて、第１電源セル３１及び第２電源セル３２に取り付けられたときの取付け高さを低く抑えることができるので、バスバー１を含む電源モジュール自体を小型化することができる。 In contrast to the bus bar 5 of this comparative example, in the bus bar 1 of the above-described embodiment, as shown in FIG. 3, the first connection portion 11 and the second connection portion 11 and the second connection portion 11 and the second connection portion 11 and the second connection portion 11 are provided for the width direction D11 of the main body portion 131 of the strip portion 13. Each of the connecting portions 12 is arranged at an intermediate position of the main body portion 131 in the width direction D11. Therefore, the height dimension H11 from the surfaces 11a and 12a on the power supply cell side of the first connection portion 11 and the second connection portion 12 to the edge of the strip portion 13 on the side opposite to the power supply cell side is the main body portion 131. It is smaller than the width. That is, the bus bar 1 of the embodiment includes the bus bar 1 because the mounting height when mounted on the first power supply cell 31 and the second power supply cell 32 can be suppressed lower than that of the bus bar 5 of the comparative example. The power supply module itself can be miniaturized.

また、本実施形態のバスバー１では、第１接続部１１が、本体部１３１の一端部１３１ａにおける幅方向Ｄ１１の一方側の縁１３１ａ−１に繋がっており、第２接続部１２が、本体部１３１の他端部１３１ｂにおける幅方向Ｄ１１の他方側の縁１３１ｂ−１に繋がっている。このバスバー１は、図２に示されているように、折り曲げ前の展開体２の形状がＺ字型の形状となる。そして、このようなＺ字型の展開体２は、図２に示されているように、一枚の金属板に複数個を、Ｚ字の各直線部分が互いに近接して且つ平行に並ぶように配列して描くことができる。これにより、例えば、一枚の金属板からＣ字型の展開体を切り出す場合等と比較して、無駄となる部分の発生を抑えて切り出すことができる。つまり、本実施形態のバスバー１によれば、良好な歩留りの下で一枚の金属板から複数個を製造することができる。 Further, in the bus bar 1 of the present embodiment, the first connection portion 11 is connected to the one-sided edge 131a-1 of the width direction D11 at one end portion 131a of the main body portion 131, and the second connection portion 12 is the main body portion. It is connected to the other end 131b-1 of the width direction D11 at the other end 131b of 131. As shown in FIG. 2, the bus bar 1 has a Z-shaped shape of the developed body 2 before bending. Then, as shown in FIG. 2, a plurality of such Z-shaped developing bodies 2 are arranged on one metal plate so that the linear portions of the Z-shape are arranged in close proximity to each other and in parallel. Can be arranged and drawn in. Thereby, for example, as compared with the case of cutting out a C-shaped developed body from one metal plate, it is possible to cut out while suppressing the generation of a wasteful portion. That is, according to the bus bar 1 of the present embodiment, a plurality of pieces can be manufactured from one metal plate under a good yield.

また、本実施形態のバスバー１では、帯板部１３が、その幅方向Ｄ１１について、上述したように斜めに延在している。その結果、本体部１３１の一端部１３１ａにおいて第１連結部１３２が延出する一方側の縁１３１ａ−１は、他端部１３１ｂの同じ側の縁１３１ａ−２よりも第１連結部１３２の湾曲半径に応じたズレ量ｄ１１で上記の第２延出方向Ｄ１１２にずれている。逆に、他端部１３１ｂにおいて第２連結部１３３が延出する他方側の縁１３１ｂ−１も、一端部１３１ａの同じ側の縁１３１ｂ−２よりも第２連結部１３３の湾曲半径に応じたズレ量ｄ１１で上記の第１延出方向Ｄ１１１にずれている。これにより、一端部１３１ａの一方側の縁１３１ａ−１と他端部１３１ｂの同じ側の縁１３１ａ−２との間に第１連結部１３２の湾曲のためのストローク分の空間が確保される。逆に、他端部１３１ｂの他方側の縁１３１ｂ−１と一端部１３１ａの同じ側の縁１３１ｂ−２との間にも第２連結部１３３の湾曲のためのストローク分の空間が確保される。そして、これによれば、例えば帯板部１３が幅方向Ｄ１１について斜行せずに直進して形成されている場合と比較して、第１連結部１３２における延出のピークと第２連結部１３３における延出のピークとの間の間隔を短く抑えることができる。つまり、本実施形態のバスバー１によれば、第１連結部１３２及び第２連結部１３３それぞれの湾曲のためのストローク分の空間を確保しつつも、本体部１３１の幅方向Ｄ１１についてのバスバー１の高さ寸法Ｈ１２（図３参照。）を抑えて小型化することができる。 Further, in the bus bar 1 of the present embodiment, the strip portion 13 extends diagonally in the width direction D11 as described above. As a result, the one-sided edge 131a-1 on which the first connecting portion 132 extends at one end 131a of the main body 131 is curved in the first connecting portion 132 with respect to the same-sided edge 131a-2 of the other end 131b. The deviation amount d11 according to the radius deviates from the above-mentioned second extension direction D112. On the contrary, the other side edge 131b-1 on which the second connecting portion 133 extends at the other end portion 131b also corresponds to the radius of curvature of the second connecting portion 133 more than the same side edge 131b-2 of the one end portion 131a. The deviation amount d11 deviates from the above-mentioned first extension direction D111. As a result, a space for a stroke for bending the first connecting portion 132 is secured between the one-sided edge 131a-1 of the one end portion 131a and the same-sided edge 131a-2 of the other end portion 131b. On the contrary, a space for a stroke for bending the second connecting portion 133 is secured between the other side edge 131b-1 of the other end portion 131b and the same side edge 131b-2 of the one end portion 131a. .. According to this, for example, as compared with the case where the strip portion 13 is formed in a straight line without skewing in the width direction D11, the extension peak and the second connecting portion in the first connecting portion 132 are formed. The interval between the extension peaks at 133 can be kept short. That is, according to the bus bar 1 of the present embodiment, the bus bar 1 with respect to the width direction D11 of the main body portion 131 is secured while ensuring a space for a stroke for bending each of the first connecting portion 132 and the second connecting portion 133. The height dimension H12 (see FIG. 3) can be suppressed to reduce the size.

また、本実施形態では、帯板部１３が、その厚み方向Ｄ１２についても、上述したように斜めに延在している。その結果、本体部１３１の一端部１３１ａは、他端部１３１ｂよりも第１連結部１３２の湾曲幅に応じたズレ量ｗ１１で第２突出方向Ｄ１２２にずれた位置にある。第１連結部１３２及び第１接続部１１は、このずれた位置から、ここでのずれの向きとは逆向きの第１突出方向Ｄ１２１に突出している。これにより、一端部１３１ａの側において、他端部１３１ｂとの間に第１連結部１３２の湾曲のためのストローク分の空間が確保される。逆に、本体部１３１の他端部１３１ｂは、一端部１３１ａよりも上記のズレ量ｗ１１で第１突出方向Ｄ１２１にずれた位置にあり、このずれた位置から、ここでのずれの向きとは逆向きの第２突出方向Ｄ１２２に第２接続部１２が突出している。これにより、他端部１３１ｂの側において、一端部１３１ａとの間に第２連結部１３３の湾曲のためのストローク分の空間が確保される。そして、このような構造によれば、例えば帯板部１３が厚み方向Ｄ１２について斜行せずに直進して形成されている場合と比較して、第１接続部１１の先端１１ｂと第２接続部１２の先端１２ｂとの間の間隔を短く抑えることができる。つまり、本実施形態のバスバー１によれば、第１連結部１３２及び第２連結部１３３それぞれの湾曲のためのストローク分の空間を確保しつつも、帯板部１３の厚み方向Ｄ１２についてのバスバー１の幅寸法Ｗ１１（図３参照。）を抑えて小型化することができる。 Further, in the present embodiment, the strip portion 13 extends diagonally in the thickness direction D12 as described above. As a result, the one end 131a of the main body 131 is located at a position shifted from the other end 131b in the second protruding direction D122 by the deviation amount w11 according to the bending width of the first connecting portion 132. The first connecting portion 132 and the first connecting portion 11 project from this displaced position in the first protruding direction D121 opposite to the direction of the displacement here. As a result, on the side of the one end portion 131a, a space for a stroke for bending the first connecting portion 132 is secured between the one end portion 131a and the other end portion 131b. On the contrary, the other end 131b of the main body 131 is located at a position shifted from the one end 131a in the first protruding direction D121 by the above deviation amount w11, and the direction of the deviation here is from this shifted position. The second connecting portion 12 projects in the second protruding direction D122 in the opposite direction. As a result, on the side of the other end portion 131b, a space for a stroke for bending the second connecting portion 133 is secured between the one end portion 131a and the other end portion 131a. Then, according to such a structure, for example, as compared with the case where the strip portion 13 is formed in a straight line without skewing in the thickness direction D12, the tip 11b of the first connecting portion 11 and the second connection are seconded. The distance between the portion 12 and the tip 12b can be kept short. That is, according to the bus bar 1 of the present embodiment, the bus bar for the thickness direction D12 of the strip portion 13 is secured while ensuring the space for the stroke for bending each of the first connecting portion 132 and the second connecting portion 133. The width dimension W11 (see FIG. 3) of 1 can be suppressed and the size can be reduced.

次に、以上に説明した実施形態に対する別例について説明する。 Next, another example for the embodiment described above will be described.

図８は、別例のバスバーを示す図であり、図９は、図８に示されている別例のバスバーの展開体を示す図である。尚、これらの図８及び図９では、図１及び図２に示されている構成要素と同等な構成要素については図１及び図２と同じ符号が付されており、以下では、それら同等な構成要素についての重複説明を割愛する。 FIG. 8 is a diagram showing another example bus bar, and FIG. 9 is a diagram showing an expanded body of another example bus bar shown in FIG. In addition, in these FIGS. 8 and 9, the components equivalent to those shown in FIGS. 1 and 2 are designated by the same reference numerals as those in FIGS. 1 and 2, and in the following, they are equivalent to each other. Duplicate explanations about the components are omitted.

別例のバスバー６では、帯板部６３における本体部６３１の一端部６３１ａにおいて、他端部１３１ｂで第２連結部１３３が延出している他方側の縁１３１ｂ−１と同じ側の縁６３１ａ−２から第１連結部６３２が延出している。また、第１連結部６３２と第２連結部１３３とが互いに同じ側の縁６３１ａ−２，１３１ｂ−１から延出していることから、この別例のバスバー６では、本体部６３１が、その幅方向Ｄ６１に斜行しておらず、直進して延在している。他方で、第１連結部６３２及び第１接続部１１と、第２連結部１３３及び第２接続部１２と、は互いに逆向きに設けられている。このため、第１連結部６３２及び第２連結部１３３それぞれの湾曲のためのストロークを確保するために、本体部６３１は、その厚み方向Ｄ６２に斜行して設けられている。 In another example of the bus bar 6, in the one end portion 631a of the main body portion 631 in the strip portion 63, the edge 631a- on the same side as the other side edge 131b-1 on which the second connecting portion 133 extends at the other end portion 131b. The first connecting portion 632 extends from 2. Further, since the first connecting portion 632 and the second connecting portion 133 extend from the edges 631a-2, 131b-1 on the same side of each other, in this alternative bus bar 6, the main body portion 631 has a width thereof. It does not skew in the direction D61, but goes straight and extends. On the other hand, the first connecting portion 632 and the first connecting portion 11 and the second connecting portion 133 and the second connecting portion 12 are provided in opposite directions to each other. Therefore, in order to secure a stroke for bending each of the first connecting portion 632 and the second connecting portion 133, the main body portion 631 is provided diagonally in the thickness direction D62 thereof.

ここで、第１連結部６３２と第２連結部１３３とが互いに同じ側の縁６３１ａ−２，１３１ｂ−１から延出していることから、別例のバスバー６の展開体７は、図９に示されているようにＣ字型の形状となる。 Here, since the first connecting portion 632 and the second connecting portion 133 extend from the edges 631a-2, 131b-1 on the same side of each other, the expanded body 7 of the bus bar 6 of another example is shown in FIG. It has a C-shaped shape as shown.

以上に説明した別例のバスバー６によっても、上述した実施形態のバスバー１と同様に、接続対象としての電源セルの電極との接続箇所に対する応力負荷の集中を抑制することができることは言うまでもない。一方で、この別例のバスバー６に比べて、上述した実施形態のバスバー１によれば、図２を参照して説明したように展開体２がＺ字型の形状となるので良好な歩留りの下で一枚の金属板から複数個を製造することができる点は、上述した通りである。 Needless to say, the bus bar 6 of another example described above can also suppress the concentration of stress load on the connection point with the electrode of the power supply cell as the connection target, as in the bus bar 1 of the above-described embodiment. On the other hand, as compared with the bus bar 6 of this other example, according to the bus bar 1 of the above-described embodiment, the developed body 2 has a Z-shaped shape as described with reference to FIG. 2, so that the yield is good. As described above, it is possible to manufacture a plurality of pieces from one metal plate below.

尚、以上に説明した実施形態や別例は本発明の代表的な形態を示したに過ぎず、本発明は、これらの実施形態や別例に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。かかる変形によってもなお本発明のバスバーの構成を具備する限り、勿論、本発明の範疇に含まれるものである。 It should be noted that the embodiments and other examples described above merely show typical embodiments of the present invention, and the present invention is not limited to these embodiments and other examples. That is, it can be variously modified and carried out within a range that does not deviate from the gist of the present invention. As long as the bus bar configuration of the present invention is still provided by such deformation, it is, of course, included in the category of the present invention.

例えば、上述した実施形態や別例では、本発明にいうバスバーの一例として、複数の電源セルを直列接続するためのバスバー１，６が例示されている。しかしながら、本発明にいうバスバーはこれに限るものではなく、その具体的な適用態様を問うものではない。 For example, in the above-described embodiment and another example, as an example of the bus bar according to the present invention, the bus bars 1 and 6 for connecting a plurality of power cells in series are exemplified. However, the bus bar referred to in the present invention is not limited to this, and does not ask a specific application mode thereof.

また、上述した実施形態や別例では、本発明にいうバスバーの一例として、第１連結部１３２，６３２及び第１接続部１１と、第２連結部１３３及び第２接続部１２と、が帯板部１３，６３から互いに逆向きに突出したバスバー１，６が例示されている。しかしながら、本発明にいうバスバーは、これらに限るものではなく、例えば、第１連結部及び第１接続部と、第２連結部及び第２接続部と、が帯板部から互いに同じ向きに突出したもの等であってもよい。 Further, in the above-described embodiment or another example, as an example of the bus bar according to the present invention, the first connecting portion 132, 632 and the first connecting portion 11 and the second connecting portion 133 and the second connecting portion 12 are banded. Busbars 1 and 6 projecting from the plate portions 13 and 63 in opposite directions are exemplified. However, the bus bar referred to in the present invention is not limited to these, and for example, the first connecting portion and the first connecting portion, and the second connecting portion and the second connecting portion protrude from the strip portion in the same direction. It may be the one that has been used.

また、上述した実施形態や別例では、本発明にいうバスバーの一例として、第１接続部１１が第１連結部１３２，６３２で帯板部１３，６３に繋がれ、第２接続部１２が第２連結部１３３で帯板部１３，６３に繋がれたバスバー１，６が例示されている。しかしながら、本発明にいうバスバーは、これらに限るものではなく、例えば、第１接続部と第２接続部とのうち一方のみがＵ字状の連結部で帯板部に繋がれたもの等であってもよい。 Further, in the above-described embodiment or another example, as an example of the bus bar according to the present invention, the first connecting portion 11 is connected to the strip portions 13 and 63 by the first connecting portions 132 and 632, and the second connecting portion 12 is connected. The bus bars 1 and 6 connected to the strip portions 13 and 63 by the second connecting portion 133 are exemplified. However, the bus bar referred to in the present invention is not limited to these, and for example, only one of the first connection portion and the second connection portion is connected to the strip portion by a U-shaped connecting portion. There may be.

また、上述した実施形態や別例では、本発明にいう第１接続部及び第２接続部の各一例として、第１延在面１１ａに沿った第１接続部１１、及び、第１延在面１１ａと同一の面となった第２延在面１２ａに沿った第２接続部１２、が例示されている。しかしながら、本発明にいう第１接続部及び第２接続部はこれらに限るものではない。本発明にいう第１接続部及び第２接続部は、第１延在面に沿った第１接続部、及び、第１延在面と平行な第２延在面に沿った第２接続部であってもよい。この場合は、第１接続部が接続される電極等の接続対象と、第２接続部が接続される電極等の接続対象と、が互いに異なる高さで形成されている場合等が当たる。 Further, in the above-described embodiment and another example, as an example of each of the first connection portion and the second connection portion referred to in the present invention, the first connection portion 11 along the first extension surface 11a and the first extension portion 11a. The second connecting portion 12 along the second extending surface 12a, which is the same surface as the surface 11a, is exemplified. However, the first connection portion and the second connection portion referred to in the present invention are not limited to these. The first connection portion and the second connection portion referred to in the present invention are a first connection portion along the first extension surface and a second connection portion along the second extension surface parallel to the first extension surface. May be. In this case, there is a case where the connection target such as the electrode to which the first connection portion is connected and the connection target such as the electrode to which the second connection portion is connected are formed at different heights from each other.

１，６バスバー
２，７展開体
１１第１接続部
１１ａ第１延在面
１２第２接続部
１２ａ第２延在面
１３，６３帯板部
１３１，６３１本体部
１３１ａ，６３１ａ一端部
１３１ａ−１一方側の縁
１３１ａ−２，６３１ａ−２，１３２ｂ−２同じ側の縁
１３１ｂ他端部
１３１ｂ−１他方側の縁
１３２，６３２第１連結部
１３３第２連結部
Ｄ１１，Ｄ６２幅方向
Ｄ１２，Ｄ６２厚み方向
Ｄ１１１第１延出方向
Ｄ１１２第２延出方向
Ｄ１２１第１突出方向
Ｄ１２２第２突出方向
Ｈ１１，Ｈ１２高さ寸法
Ｗ１１幅寸法
ｄ１１，ｗ１１ズレ量 1,6 Bus bar 2,7 Expanded body 11 1st connection part 11a 1st extension surface 12 2nd connection part 12a 2nd extension surface 13,63 Strip plate part 131,631 Main body part 131a, 631a One end part 131a-1 One side edge 131a-2, 631a-2, 132b-2 Same side edge 131b The other end 131b-1 The other side edge 132,632 First connection part 133 Second connection part D11, D62 Width direction D12, D62 Thickness direction D111 1st extension direction D112 2nd extension direction D121 1st protrusion direction D122 2nd protrusion direction H11, H12 Height dimension W11 Width dimension d11, w11 Amount of deviation

Claims

It ’s a metal busbar,
A first connecting portion formed in a flat plate shape along the first extending surface,
It is formed in a flat plate shape along a second extending surface that is the same as the first extending surface or parallel to the first extending surface, and is viewed in a plan view with respect to the first extending surface or the second extending surface. , A second connection portion arranged at a position away from the first connection portion,
A strip portion formed in a strip shape and connecting the first connection portion and the second connection portion to each other is provided.
The strip portion extends in a strip shape along the out-of-plane direction of the first extending surface and the second extending surface, and extends in the width direction from the main body portion. A connecting portion that is formed in a U-shape that is curved in the middle, folded back, and extends in the opposite direction, and connects at least one of the first connecting portion and the second connecting portion to the main body portion. A bus bar characterized by being equipped with.

The connecting portion is characterized in that the first connecting portion is connected to one end of the main body portion and the second connecting portion is connected to the other end portion of the main body portion. The bus bar according to claim 1.

The bus bar according to claim 2, wherein each of the first connection portion and the second connection portion is arranged at an intermediate position in the width direction of the main body portion.

The first connection portion is connected to one end of the main body portion in the width direction.
The bus bar according to any one of claims 1 to 3, wherein the second connecting portion is connected to the other end of the main body portion on the other side in the width direction.

The connecting portion extends from the one-sided edge in the first extending direction to connect the first connecting portion to the one-sided edge, and the other-sided edge extends in the first extending direction. Two are provided, one that extends in the second extending direction in the opposite direction and connects the second connecting portion to the other side edge.
In the width direction of the main body, the one-sided edge of the one end is displaced from the same-side edge of the other end in the second extension direction by at least the amount of deviation corresponding to the radius of curvature of the connecting portion. On the contrary, the main body is positioned so that the other side edge of the other end portion is displaced from the same side edge of the one end portion in the first extension direction by at least the deviation amount. The bus bar according to claim 4, wherein the portions extend diagonally.

The connecting portion is provided at one end of the main body portion, and the first connecting portion is separated from the first surface on the side of the first surface of the front and back surfaces of the main body portion. A device that protrudes in the first projecting direction and is connected so as to extend, and a device that is provided at the other end of the main body portion and is provided on the second surface side of the front and back surfaces of the main body portion to the second connection portion. Two are provided, one in which the second connecting portion projects and extends in the second protruding direction away from the second surface, and the other in which the second connecting portion is connected so as to extend.
On the contrary, in the thickness direction of the main body portion, the other end portion is positioned so that the one end portion is displaced from the other end portion in the second protruding direction by an amount of deviation corresponding to at least the bending width of the connecting portion. Any one of claims 1 to 5, wherein the main body portion extends diagonally so as to be displaced from the one end portion in the first protruding direction by at least the deviation amount. Busbar described in.