JP3811348B2 - Battery connection plate - Google Patents

Battery connection plate Download PDF

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Publication number
JP3811348B2
JP3811348B2 JP2000359405A JP2000359405A JP3811348B2 JP 3811348 B2 JP3811348 B2 JP 3811348B2 JP 2000359405 A JP2000359405 A JP 2000359405A JP 2000359405 A JP2000359405 A JP 2000359405A JP 3811348 B2 JP3811348 B2 JP 3811348B2
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Japan
Prior art keywords
wall
battery
bus bar
electrode
plate
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JP2000359405A
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JP2002164034A (en
Inventor
敏 斉藤
智洋 池田
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Yazaki Corp
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Yazaki Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Connection Of Batteries Or Terminals (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、電気自動車等の複数のバッテリを直列に接続するためのバッテリ接続プレートに係り、各バッテリの電極と接続部材であるバスバーとを位置ずれなく正確に接続させることのできるバッテリ接続プレートに関するものである。
【0002】
【従来の技術】
図4は従来のバッテリ接続プレートの一形態を示すものである。
バッテリ接続プレート70,71はバッテリ集合体72の前後両端側に装着され、複数のバッテリ73を直列に接続するためのものであり、合成樹脂製の絶縁性の横長のプレート本体74に導電金属製の接続板であるバスバー75を複数並列に有している。
【0003】
バスバー75は、隣接する二つのバッテリ73の正と負の雄ねじ型の電極76,77に対する挿通孔78を有して、プレート本体74に圧入やインサート成形等の手段で固定されている。各電極76,77はナット79でバスバー75に締付接続される。
【0004】
手前側のバッテリ接続プレート70の両端側には、一つの挿通孔82を有するバスバー83が固定されており、バッテリ集合体72の両端側のバッテリ73の正と負の電極76,77が各バスバー83を経て端子付きの電源線(図示せず)に接続される。
【0005】
プレート本体74にはカバー80が回動自在に設けられており、カバー80を閉止することで、バスバー75,83や電極76,77やナット79が収容部81内に保護される。カバー80は係止手段84でプレート本体74に係止される。
【0006】
複数のバッテリ73は例えばバンド85等の固定手段で厚さ方向に並んだ状態に保持固定され、電気自動車の電源収容部(図示せず)に収納される。
【0007】
図4の前側のバッテリ接続プレート70によって、左端のバッテリ731 の手前側の電極761 が一つの挿通孔のバスバー83に接続され、左から二番目と三番目のバスバー732 ,733 の手前側の各電極77,76が二つの挿通孔のバスバー75で接続される。以下同様に二つの挿通孔のバスバー75で各バッテリ73の手前側の電極76,77が接続され、右端のバッテリ73の電極77が一つの挿通孔のバスバー83に接続される。
【0008】
また、後側のバッテリ接続プレート71によって、左端のバッテリ731 の後側の電極77と左から二番目の後側の電極76、左から三番目の後側の電極と四番目の後側の電極、というように全てのバッテリ73の電極が二つごとに二つの挿通孔のバスバー75で接続される。
【0009】
しかしながら、上記従来のバッテリ接続プレート70,71においては、各バッテリ73の電極76,77の取付寸法誤差や振れ、あるいは合成樹脂製のバッテリケース(符号73で代用)の板厚や厚さ方向の幅寸法の誤差、あるいは樹脂成形されたプレート本体におけるバスバーの位置誤差等によって、各バスバー75,83の挿通孔に対する各電極76,77の位置がずれ、各挿通孔78,82に各電極76,66をスムーズに挿通させることができないという問題を生じた。
【0010】
そこで本出願人は先に特願平10−254788号で図5に示すバッテリ接続プレートを提案した。
【0011】
このバッテリ接続プレート50は、一つのプレート本体51をスリット57で複数に分割し、二つないし三つのバスバー52を各プレート本体53〜55毎に設け、複数(三つ)のプレート本体53〜55をスリット57の基部側の可撓性のヒンジ部56で相互に連結して、プレート本体53〜55毎に長手方向に一定範囲移動可能としたものである。
【0012】
ヒンジ部56は、各プレート本体53〜55間のスリット部57の基部側に円形の孔部58を形成し、孔部58とプレート本体51の長手壁面51aとの間に薄肉に構成されている。各プレート本体53〜55毎にカバー60が薄肉のヒンジ61を介して開閉自在に設けられている。
【0013】
左右のプレート本体53,55には二つの挿通孔62のバスバー52が二つと、一つの挿通孔63のバスバー64が一つ設けられ、中間のプレート本体54には二つの挿通孔62のバスバー52が二つ設けられ、全体として十四個のバッテリ(図示せず)を直列に接続可能となっている。このバッテリ接続プレート50はバッテリ集合体(図示せず)の一方に装着され、バッテリ集合体の他方には、例えば二つの挿通孔のバスバー52を二つ配設した左右のプレート本体と、二つの挿通孔のバスバー52を三つ配設した中間のプレート本体とを備える図示しないバッテリ接続プレートが装着される。
【0014】
バッテリ集合体にバッテリ接続プレート50を装着する際に、各バッテリの雄ねじ型の電極の位置寸法誤差や振れ(倒れ)等があっても、各プレート本体53〜55間のヒンジ部56が撓んで、バスバー52,64に対する電極の位置ずれを吸収可能である。
【0015】
【発明が解決しようとする課題】
しかしながら、上記バッテリ接続プレート50にあっては、バスバー52,64に対する各バッテリの雄ねじ型の電極の位置ずれが小さい場合は問題ないが、電極の位置ずれが大きい場合や、各プレート本体53〜55内の各バスバー52,64に対応するバッテリの電極の位置ずれがあった場合(例えば図5で右側のプレート本体53内の三つのバスバー52,64の五つの挿通孔62,63に対して五つのバッテリのうちの何れか二つのバッテリの電極の位置がずれている場合)や、プレート本体53〜55内のバスバー52,64の組付位置誤差が大きい場合等においては、電極と挿通孔62,63との位置が合わず、電極とバスバー52,64との接続がスムーズに行えない、あるいは全く不可能になってしまうという懸念があった。
【0016】
本発明は、上記した点に鑑み、各バッテリの電極(雄ねじ型に限らずバッテリケースから突出したものであればよい)の位置ずれが大きな場合や、プレート本体内でのバスバーの組付位置誤差が大きな場合や、近隣の各バッテリの電極が位置ずれしている場合でも、作業性良くスムーズに且つ確実に電極をバスバーに接続させることのできるバッテリ接続プレートを提供することを目的とする。
【0017】
【課題を解決するための手段】
上記目的を達成するために、本発明は、複数の並列なバッテリの各電極を直列に接続するための複数の接続部材を有するバッテリ接続プレートにおいて、前記接続部材の数と等しい数の分割プレート本体を有し、各分割プレート本体毎に該接続部材が一つずつ独立して設けられ、各分割プレート本体が、該接続部材を収容する枠状壁と、該枠状壁から延びた可撓性の支持壁部とを有し、各支持壁部が共通連結壁に交差して続いており、各分割プレート本体が前記電極に対して独立して移動可能であることを特徴とする(請求項1)。
前記支持壁部が三次元方向に撓み可能であることも有効である(請求項)。
また、前記接続部材が、前記電極に対する一つ又は二つの挿通孔を有するバスバーであることも有効である(請求項)。
【0018】
【発明の実施の形態】
以下に発明の実施の形態を図面を用いて詳細に説明する。
図1〜図3は、本発明に係るバッテリ接続プレートの一実施形態を示すものである。
【0019】
このバッテリ接続プレート1は、一つのバスバー2(接続部材)毎にプレート本体3を分割し、各分割プレート本体4〜6を各バスバー2毎に独立して移動可能としたことを特徴とするものである。
【0020】
バスバー2は導電金属製の長方形の接続板であり、プレート本体3は絶縁性の合成樹脂を材料として形成され、各バスバー2を独立して保持固定させるための複数の分割プレート本体4〜6を備えている。分割プレート本体4〜6はバッテリの数の半分の数が等ピッチで並列に配置されている。図1,図2ではバッテリ接続プレート1の一端側のみを図示している。
【0021】
プレート本体3は、略L字状の複数の分割プレート本体4〜6と、各分割プレート本体4〜6を移動可能に連結させた共通連結壁7とを少なくとも備えている。分割プレート本体4〜6は、バスバー2を収容した矩形状(長方形)の枠状部8と、枠状部8の長辺側の一方の壁部8a(図2)に垂直に設けられた可撓性の支持壁部(可撓部)10とで構成されている。
【0022】
支持壁部10は断面矩形状に形成され、主に矢印a(図1)の如く左右(プレート長手方向)に撓み可能である。すなわち、支持壁部10が共通連結壁7との連結部11を支点として支持壁部10の薄肉方向に揺動する如く撓み可能である。これにより、バスバー2毎にバッテリ(図示せず)の電極の左右方向(バッテリ並び方向)の位置ずれを吸収可能である。
【0023】
支持壁部10は矢印b(図1)の如く長手方向にも座屈する如く撓み可能であり、また、支持壁部10と枠状壁8との連結部12を支点として、枠状壁8が矢印c(図1)の如く周方向に回動可能である。これらにより、バスバー2毎にバッテリの電極の上下方向(バッテリ並び直交方向)の位置ずれを吸収可能である。
【0024】
さらに、支持壁部10は共通連結壁7との連結部11を支点として矢印d(図2)の如くバスバー2の板厚方向にも揺動して撓み可能であり、これにより、バスバー2毎にバッテリの電極の前後方向(電極軸方向)の位置ずれを吸収可能である。
【0025】
共通連結壁7に対して各支持壁部10は等ピッチで配設され、各枠状壁8の間には等しい寸法の隙間13が構成されている。この隙間13の範囲で各枠状壁8が左右に移動可能である。
【0026】
支持壁部10は枠状壁8の板厚よりも厚く、支持壁部10の長手方向に枠状壁8の短辺側の一方の壁部8b(図2)が延長形成され、一方の壁部8bに対して短辺側の他方の壁部8dが平行に位置し、他方の壁部8dと隣接する他の枠状壁8の一方の壁部8bとの間に前記隙間13が構成されている。
【0027】
各枠状壁8の長辺側の一方の壁部8a(図2)は支持壁部10と直交し、長辺側の他方の壁部8c(図2)は一方の壁部8aと平行に前記分割プレート本体4〜6の自由端側に位置している。
【0028】
各支持壁部10の長さは、枠状壁8すなわちバスバー2を左右に移動させる距離に応じて適宜設定される。支持壁部10が長ければ枠状壁8の移動距離も大きく、支持壁部10が短ければ枠状壁8の移動距離も小さくなる。枠状壁8の設定移動距離に応じて枠状壁間の隙間13の寸法が設定されることはいうまでもない。支持壁部10の板厚を変化させることで、枠状壁8の移動容易性を適宜設定することができる。
【0029】
枠状壁8の長辺側の一方の壁部8aと共通連結壁7との間には、枠状壁8に対する回動方向の撓み空間14が位置し、長辺側の他方の壁部8cの外側には外部空間が位置している。左右端側の枠状壁8の短辺側の壁部8bの外側や左右端側の支持壁部10の外側にも外部空間が位置し、両端側の枠状壁8が左右にスムーズに移動可能である。
【0030】
図2の如く一方のバッテリ接続プレート1に全て二つ孔の長方形状のバスバー2を用いた場合には、他方のバッテリ接続プレート(図示せず)の両端側の独立した分割プレート本体に一つ孔の正方形状のバスバーを装着する。
【0031】
図3に図2のA−A断面を示す如く、各枠状壁8の内側にバスバー2が固定されている。バスバー2の周端部2aが枠状壁8の周溝15内に係合ないし固着されている。バスバー2は合成樹脂製の枠状壁8にインサート成形で固定してもよく、あるいは枠状壁8の樹脂成形後に枠状壁8内の周溝15にバスバー2を押し込んで嵌着してもよい。この場合、枠状壁8の内壁面8eに、バスバー2の周端部2aに対する係止突起や係止爪(図示せず)を設けることが好ましい。合成樹脂製の分割プレート本体4〜6と導電金属製のバスバー2とで各分割プレートが構成される。
【0032】
図3の枠状壁8内でバスバー2を境に図で下側(一方)の空間16の高さが低く、図で上側(他方)の空間17の高さが高く設定されている。ここで両空間16,17の向きはバッテリ接続プレート1の装着の向きに関係し、一方の空間16がバッテリ側に位置し、他方の空間17が外側に位置する。バッテリ接続プレート1は通常の装着状態で枠状壁8の長辺側の二つの壁部8a,8c(図2)が上下に位置する。
【0033】
図3で一方の空間16にバッテリ(図示せず)の雄ねじ型(スタッドボルト型)の電極側が位置し、電極はバスバー2の挿通孔18に挿入され、電極の付根側の短円柱状の座部が一方の空間16内に収容される。一つの挿通孔18に一つのバッテリの電極が挿入される。
【0034】
他方の空間17には、電極をナット(図示せず)でバスバー2に締め付けるための工具が進入する。ナットを締めつけることで電極の座部がバスバー2の一方の面に強く密着し、バスバー2とバッテリとが接続され、一つの空間17内で二つのバッテリの各電極を一つのバスバー2に接続することで、両バッテリがバスバー2を介して直列に接続される。
【0035】
このバッテリの接続に際して、バッテリ集合体の各バッテリの各電極の位置と各バスバー2の挿通孔18の位置とが大きく位置ずれしている場合でも、上述の如く、図1,図2で例えば電極が左右(プレート長手方向)に位置ずれしている場合には、その電極に対応した分割プレート本体4〜6の支持壁部10を矢印a(図1)の如く左右に揺動させて撓ませることで、電極の位置ずれが吸収される。これにより、分割プレート本体4〜6内のバスバー2の円形の挿通孔18に電極が位置ずれなくスムーズに挿入される。
【0036】
また、電極が上下方向(バスバーの挿通孔の並び直交方向)に位置ずれしている場合には、その電極に対応する分割プレート本体4〜6の支持壁部10を矢印b(図1)の如く上下に座屈させる如く撓ませることで、電極の位置ずれが吸収される。これにより、バスバー2の挿通孔18に電極が位置ずれなくスムーズに挿入される。
【0037】
電極が上下方向に位置ずれしている場合には、枠状壁8を支持壁部10との連結部12から矢印c(図1)の如く回動させることによっても、電極との位置ずれを吸収させることができる。
【0038】
また、電極が前後方向(バスバー2の板厚方向)に位置ずれしている場合には、その電極に対応する分割プレート本体4〜6の支持壁部10を矢印d(図2)の如く前後方向に揺動させて撓ませることで、電極の位置ずれが吸収される。これにより、バスバー2の挿通孔18に電極が位置ずれなく挿入されると共に、ナット(図示せず)の締付によってバスバー2が電極の座部に軸方向の隙間なく確実に密着する。
【0039】
このように、少なくとも二つの隣接するバッテリの各電極に対応して二つの挿通孔18のバスバー2を他のバスバー2とは独立して移動可能としたことで、少なくとも二つの電極ごとの位置ずれを正確に吸収して、バッテリ集合体へのバッテリ接続プレート1の装着をスムーズ且つ確実に行うことができる。
【0040】
二つの隣接する電極間の位置ずれは極めて僅かなものであり、実質的に一つの電極毎に位置ずれを吸収させる必要はなく、図1,図2の二つの挿通孔18のバスバー2毎に位置ずれを吸収することで十分である。
【0041】
各枠状壁10毎に小さなカバー(図示せず)を設けることも可能であり、あるいは大きなカバー(図示せず)を共通連結壁部7に薄肉のヒンジ(図示せず)を介して回動自在に設けることも可能である。各カバーは係止手段で分割プレート本体4〜6等に係止される。
【0042】
なお、上記実施形態においては、枠状壁8の一側寄りに可撓性の支持壁部10を連結させたが、支持壁部10を枠状壁8の長辺部の一方の壁部8aの中央に連結させることも可能である。断面矩形状の支持壁部10に代えて円柱状の支持壁部を設けたり、薄板状の支持壁部を設けたり、その他の形態の支持壁部や可撓部を設けることも可能である。
【0043】
また、バスバーの挿通孔に雄ねじ型の電極を挿通させる構造に代えて、例えばバッテリの雌型の電極をバスバー2側のボルトや突出部(図示せず)に接続する等の手段を講じることも可能である。
【0044】
【発明の効果】
以上の如く、請求項1記載の発明によれば、各分割プレート本体の支持壁部を撓ませて接続部材毎に移動可能であるから、バッテリの電極の位置ずれが大きな場合や、各接続部材の位置精度が悪い場合、あるいは近隣の各電極がそれぞれ位置ずれしている場合においても、各電極に対応して各接続部材を移動させて位置ずれを吸収することができるから、各電極をスムーズ且つ確実に接続部材に接続させることができる。これにより、接続作業性が向上すると共に、従来、寸法不良で廃棄処分あるいは手直し処分されていたバッテリやバッテリ接続プレートを問題なく使用することができ、経済的効果が高まる。
【0045】
また、枠状壁を作業者が手で持って例えば左右方向に押すことで、支持壁部が揺動して撓み、枠状壁を接続部材と一体に移動させて、電極の位置ずれを大きな移動距離で確実に且つ容易に吸収させることができる。これにより、接続作業性が一層向上する。
【0046】
また、請求項記載の発明によれば、支持壁部を三次元方向すなわち上下及び/又は左右及び/又は前後に撓ませることで、電極と接続部材とがどの方向に位置ずれしていても、確実にその位置ずれを吸収させることができる。これにより、接続作業性が一層向上する。
【0047】
また、請求項記載の発明によれば、隣接する二つのバッテリの各一つの電極がバスバーの二つの挿通孔に同時に挿入され、あるいは一つのバッテリの一つの電極がバスバーの一つの挿通孔に挿入されて、電極とバスバーとがねじ締め等の手段で接続される。このように、一枚のバスバーの多くとも二つの挿通孔に、隣り合う二つのバッテリの各電極が同時に挿入されるが、その際、各バスバー毎に独立して電極との位置ずれを吸収可能であるから、隣り合う三つ以上の電極に対して大きな位置ずれがあっても、各バスバー毎に位置ずれを吸収して、正確に挿通孔に各電極を挿入させることができる。これにより、接続作業性が向上する。
【図面の簡単な説明】
【図1】本発明に係るバッテリ接続プレートの一実施形態を示す平面図である。
【図2】同じくバッテリ接続プレートを示す斜視図である。
【図3】図2のA−A断面図である。
【図4】従来のバッテリ接続プレートをバッテリ集合体に装着する状態を示す分解斜視図である。
【図5】本出願人が先に提案した位置ずれ吸収式のバッテリ接続プレートを示す平面図である。
【符号の説明】
1 バッテリ接続プレート
2 バスバー(接続部材)
4〜6 分割プレート本体
7 共通連結壁
8 枠状壁
10 支持壁部(可撓部)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery connection plate for connecting a plurality of batteries such as an electric vehicle in series, and relates to a battery connection plate capable of accurately connecting electrodes of each battery and a bus bar as a connection member without misalignment. Is.
[0002]
[Prior art]
FIG. 4 shows an embodiment of a conventional battery connection plate.
The battery connection plates 70 and 71 are attached to both front and rear ends of the battery assembly 72, and are used for connecting a plurality of batteries 73 in series. A plurality of bus bars 75 which are the connection plates are arranged in parallel.
[0003]
The bus bar 75 has insertion holes 78 for the positive and negative male threaded electrodes 76 and 77 of two adjacent batteries 73 and is fixed to the plate body 74 by means such as press fitting or insert molding. The electrodes 76 and 77 are tightened and connected to the bus bar 75 with nuts 79.
[0004]
A bus bar 83 having one insertion hole 82 is fixed to both ends of the battery connection plate 70 on the front side, and the positive and negative electrodes 76 and 77 of the battery 73 on both ends of the battery assembly 72 are connected to each bus bar. A power line (not shown) with a terminal is connected through 83.
[0005]
A cover 80 is rotatably provided on the plate main body 74. By closing the cover 80, the bus bars 75 and 83, the electrodes 76 and 77, and the nut 79 are protected in the housing portion 81. The cover 80 is locked to the plate body 74 by the locking means 84.
[0006]
The plurality of batteries 73 are held and fixed in a state in which they are arranged in the thickness direction by fixing means such as a band 85, and are stored in a power supply storage portion (not shown) of the electric vehicle.
[0007]
The front of the battery connection plate 70 in FIG. 4, the electrode 76 1 of the left end of the battery 73 1 of the front side is connected to the bus bar 83 of one of the insertion hole, the second and third from the left bus bar 73 2, 73 3 The electrodes 77 and 76 on the front side are connected by a bus bar 75 having two insertion holes. Similarly, the electrodes 76 and 77 on the front side of each battery 73 are connected by the bus bar 75 having two insertion holes, and the electrode 77 of the battery 73 at the right end is connected to the bus bar 83 having one insertion hole.
[0008]
Further, by the rear battery connection plate 71, the left end of the battery 73 1 after the electrode 77 and the left side of the second rear electrode 76, the third rear left electrode and fourth rear The electrodes of all the batteries 73, such as electrodes, are connected to each other by bus bars 75 having two insertion holes.
[0009]
However, in the conventional battery connection plates 70, 71, the mounting dimension error and vibration of the electrodes 76, 77 of each battery 73, or the thickness or thickness direction of a synthetic resin battery case (represented by reference numeral 73) The position of each electrode 76, 77 with respect to the insertion hole of each bus bar 75, 83 is shifted due to an error in the width dimension or a position error of the bus bar in the resin-molded plate body, and each electrode 76, 77 is inserted into each insertion hole 78, 82. This caused a problem that 66 could not be smoothly inserted.
[0010]
Therefore, the present applicant previously proposed a battery connection plate shown in FIG. 5 in Japanese Patent Application No. 10-254788.
[0011]
In the battery connection plate 50, one plate body 51 is divided into a plurality of slits 57, and two or three bus bars 52 are provided for each plate body 53 to 55, and a plurality (three) of the plate bodies 53 to 55 are provided. Are connected to each other by a flexible hinge portion 56 on the base side of the slit 57 so that the plate main bodies 53 to 55 can move within a certain range in the longitudinal direction.
[0012]
The hinge part 56 forms a circular hole 58 on the base side of the slit part 57 between the plate bodies 53 to 55, and is thinly formed between the hole 58 and the longitudinal wall surface 51 a of the plate body 51. . A cover 60 is provided for each plate body 53 to 55 through a thin hinge 61 so as to be opened and closed.
[0013]
The left and right plate bodies 53 and 55 are provided with two bus bars 52 with two insertion holes 62 and one bus bar 64 with one insertion hole 63, and the intermediate plate body 54 has a bus bar 52 with two insertion holes 62. Are provided, and as a whole, 14 batteries (not shown) can be connected in series. The battery connection plate 50 is attached to one of the battery assemblies (not shown). The other battery assembly includes, for example, left and right plate bodies provided with two bus bars 52 having two insertion holes, and two A battery connection plate (not shown) including an intermediate plate body in which three bus bars 52 of insertion holes are arranged is mounted.
[0014]
When the battery connection plate 50 is attached to the battery assembly, the hinge portion 56 between the plate bodies 53 to 55 is bent even if there is a positional dimensional error or a shake (falling) of the male screw type electrode of each battery. Further, it is possible to absorb the positional deviation of the electrodes with respect to the bus bars 52 and 64.
[0015]
[Problems to be solved by the invention]
However, in the battery connection plate 50, there is no problem when the displacement of the male screw type electrode of each battery with respect to the bus bars 52 and 64 is small, but when the displacement of the electrode is large, the plate main bodies 53 to 55 are not affected. If there is a displacement of the battery electrode corresponding to each bus bar 52, 64 (for example, five bus bars 52, 64 in the right side of the plate body 53 in FIG. When the positions of the electrodes of any two of the batteries are misaligned) or when the assembly position error of the bus bars 52 and 64 in the plate bodies 53 to 55 is large, the electrodes and the insertion holes 62 are used. , 63 are not aligned with each other, and there is a concern that the connection between the electrodes and the bus bars 52, 64 cannot be performed smoothly or becomes impossible at all.
[0016]
In view of the above points, the present invention provides a case where the displacement of the electrode of each battery (not limited to the male screw type, as long as it protrudes from the battery case) is large, or an assembly position error of the bus bar within the plate body. It is an object of the present invention to provide a battery connection plate that can connect an electrode to a bus bar with good workability smoothly and surely even when the electrode of each battery in the vicinity is displaced.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a battery connection plate having a plurality of connection members for connecting each electrode of a plurality of parallel batteries in series, wherein the number of divided plate bodies is equal to the number of the connection members. Each of the divided plate main bodies is provided independently for each divided plate body , and each divided plate main body has a frame-like wall for accommodating the connecting member, and a flexible member extending from the frame-like wall. of a support wall, the support wall portion is subsequently intersect the common connecting wall, characterized in that each dividing plate body is movable independently relative to the electrode (claim 1).
It is also effective the support wall portion is deflectable in three-dimensional directions (claim 2).
Further, the connection member, it is also effective is a bus bar having one or two through holes for the electrodes (claim 3).
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 3 show an embodiment of a battery connection plate according to the present invention.
[0019]
The battery connection plate 1 is characterized in that the plate body 3 is divided for each bus bar 2 (connection member), and the divided plate bodies 4 to 6 can be moved independently for each bus bar 2. It is.
[0020]
The bus bar 2 is a rectangular connecting plate made of conductive metal. The plate body 3 is made of an insulating synthetic resin, and includes a plurality of divided plate bodies 4 to 6 for holding and fixing each bus bar 2 independently. I have. In the divided plate bodies 4 to 6, half the number of the batteries is arranged in parallel at an equal pitch. 1 and 2, only one end side of the battery connection plate 1 is illustrated.
[0021]
The plate body 3 includes at least a plurality of substantially L-shaped divided plate bodies 4 to 6 and a common connection wall 7 that connects the divided plate bodies 4 to 6 in a movable manner. The divided plate bodies 4 to 6 are provided vertically to a rectangular (rectangular) frame-shaped portion 8 that accommodates the bus bar 2 and one wall portion 8 a (FIG. 2) on the long side of the frame-shaped portion 8. It is comprised with the flexible support wall part (flexible part) 10. FIG.
[0022]
The support wall portion 10 is formed in a rectangular shape in cross section, and can be bent to the left and right (plate longitudinal direction) mainly as indicated by an arrow a (FIG. 1). That is, the support wall portion 10 can be bent so as to swing in the thin wall direction of the support wall portion 10 with the connection portion 11 with the common connection wall 7 as a fulcrum. Thereby, it is possible to absorb the displacement in the left-right direction (battery arrangement direction) of the electrode of the battery (not shown) for each bus bar 2.
[0023]
The support wall portion 10 can be bent so as to buckle in the longitudinal direction as indicated by an arrow b (FIG. 1), and the frame-like wall 8 is supported by the connecting portion 12 between the support wall portion 10 and the frame-like wall 8. It can be rotated in the circumferential direction as shown by an arrow c (FIG. 1). Accordingly, it is possible to absorb the positional deviation in the vertical direction (battery alignment direction) of the battery electrodes for each bus bar 2.
[0024]
Further, the support wall portion 10 can be bent and swung in the thickness direction of the bus bar 2 as indicated by an arrow d (FIG. 2) with the connection portion 11 with the common connection wall 7 as a fulcrum. In addition, it is possible to absorb the positional deviation of the battery electrode in the front-rear direction (electrode axis direction).
[0025]
The support wall portions 10 are arranged at an equal pitch with respect to the common connection wall 7, and gaps 13 having the same dimensions are formed between the frame-like walls 8. Each frame-like wall 8 can move left and right within the range of the gap 13.
[0026]
The support wall 10 is thicker than the plate thickness of the frame-like wall 8, and one wall 8 b (FIG. 2) on the short side of the frame-like wall 8 is formed to extend in the longitudinal direction of the support wall 10. The other wall 8d on the short side is positioned in parallel to the portion 8b, and the gap 13 is formed between the other wall 8d and one wall 8b of the other frame-like wall 8 adjacent thereto. ing.
[0027]
One wall 8a (FIG. 2) on the long side of each frame-shaped wall 8 is orthogonal to the support wall 10, and the other wall 8c (FIG. 2) on the long side is parallel to one wall 8a. It is located on the free end side of the divided plate bodies 4-6.
[0028]
The length of each support wall 10 is appropriately set according to the distance by which the frame-shaped wall 8, that is, the bus bar 2 is moved to the left and right. If the support wall 10 is long, the moving distance of the frame-like wall 8 is large, and if the supporting wall 10 is short, the moving distance of the frame-like wall 8 is also small. Needless to say, the dimension of the gap 13 between the frame-shaped walls is set according to the set movement distance of the frame-shaped wall 8. By changing the thickness of the support wall 10, the ease of movement of the frame-like wall 8 can be set as appropriate.
[0029]
Between the one side wall 8a on the long side of the frame-like wall 8 and the common connecting wall 7, a bending space 14 in the rotational direction with respect to the frame-like wall 8 is located, and the other wall 8c on the long side is located. Outside space is located outside. External space is also located outside the short side wall portion 8b of the left and right end side frame-like wall 8 and outside the left and right end side support wall portion 10, and the both end side frame-like walls 8 move smoothly to the left and right. Is possible.
[0030]
When the two-hole rectangular bus bar 2 is used for one battery connection plate 1 as shown in FIG. 2, one is provided for each of the independent divided plate bodies on both ends of the other battery connection plate (not shown). A square bus bar with holes is installed.
[0031]
As shown in FIG. 3 in the AA cross section of FIG. 2, the bus bar 2 is fixed inside each frame-like wall 8. The peripheral end 2 a of the bus bar 2 is engaged or fixed in the peripheral groove 15 of the frame-like wall 8. The bus bar 2 may be fixed to the synthetic resin frame-like wall 8 by insert molding, or after the resin molding of the frame-like wall 8, the bus bar 2 may be pushed into the circumferential groove 15 in the frame-like wall 8 and fitted. Good. In this case, it is preferable to provide a locking projection or a locking claw (not shown) for the peripheral end 2 a of the bus bar 2 on the inner wall surface 8 e of the frame-shaped wall 8. Each divided plate is composed of the divided plate bodies 4 to 6 made of synthetic resin and the bus bar 2 made of conductive metal.
[0032]
In the frame-like wall 8 in FIG. 3, the lower (one) space 16 is set low in the figure with the bus bar 2 as a boundary, and the upper (other) space 17 is set high in the figure. Here, the directions of the two spaces 16 and 17 are related to the mounting direction of the battery connection plate 1, and one space 16 is located on the battery side and the other space 17 is located on the outside. In the battery connection plate 1, the two wall portions 8 a and 8 c (FIG. 2) on the long side of the frame-like wall 8 are vertically positioned in a normal mounting state.
[0033]
In FIG. 3, the electrode side of a male screw type (stud bolt type) of a battery (not shown) is located in one space 16, the electrode is inserted into the insertion hole 18 of the bus bar 2, and a short cylindrical seat on the base side of the electrode. The part is accommodated in one space 16. One battery electrode is inserted into one insertion hole 18.
[0034]
A tool for fastening the electrode to the bus bar 2 with a nut (not shown) enters the other space 17. By tightening the nut, the seat portion of the electrode tightly adheres to one surface of the bus bar 2, the bus bar 2 and the battery are connected, and each electrode of the two batteries is connected to one bus bar 2 in one space 17. Thus, both batteries are connected in series via the bus bar 2.
[0035]
Even when the position of each electrode of each battery of the battery assembly and the position of the insertion hole 18 of each bus bar 2 are greatly displaced at the time of connection of this battery, as described above, for example, in FIG. Is displaced left and right (in the plate longitudinal direction), the support wall portions 10 of the divided plate bodies 4 to 6 corresponding to the electrodes are deflected by swinging left and right as shown by arrows a (FIG. 1). Thus, the positional deviation of the electrode is absorbed. Thereby, an electrode is smoothly inserted into the circular insertion hole 18 of the bus bar 2 in the divided plate main bodies 4 to 6 without misalignment.
[0036]
Further, when the electrode is displaced in the vertical direction (the direction perpendicular to the arrangement of the insertion holes of the bus bar), the support wall portion 10 of the divided plate bodies 4 to 6 corresponding to the electrode is moved by the arrow b (FIG. 1). In this way, the positional displacement of the electrode is absorbed by bending it up and down. As a result, the electrodes are smoothly inserted into the insertion holes 18 of the bus bar 2 without displacement.
[0037]
When the electrode is displaced in the vertical direction, the displacement from the electrode can also be achieved by rotating the frame-like wall 8 from the connecting portion 12 with the support wall 10 as shown by the arrow c (FIG. 1). Can be absorbed.
[0038]
Further, when the electrodes are displaced in the front-rear direction (the thickness direction of the bus bar 2), the support wall portions 10 of the divided plate bodies 4-6 corresponding to the electrodes are moved back and forth as indicated by arrows d (FIG. 2). The positional deviation of the electrode is absorbed by swinging in the direction and bending. As a result, the electrode is inserted into the insertion hole 18 of the bus bar 2 without misalignment, and the bus bar 2 is firmly attached to the seat portion of the electrode without any axial gap by tightening a nut (not shown).
[0039]
As described above, the bus bar 2 of the two insertion holes 18 corresponding to each electrode of at least two adjacent batteries can be moved independently of the other bus bars 2, thereby shifting the position of each of the at least two electrodes. The battery connection plate 1 can be smoothly and reliably attached to the battery assembly.
[0040]
The positional deviation between two adjacent electrodes is extremely small, and it is not necessary to absorb the positional deviation substantially for each one electrode. For each bus bar 2 of the two insertion holes 18 in FIGS. It is sufficient to absorb the misalignment.
[0041]
It is possible to provide a small cover (not shown) for each frame-like wall 10 or to rotate the large cover (not shown) to the common connecting wall portion 7 through a thin hinge (not shown). It can also be provided freely. Each cover is locked to the divided plate bodies 4 to 6 by a locking means.
[0042]
In the above embodiment, the flexible support wall 10 is connected to one side of the frame-like wall 8, but the support wall 10 is connected to one wall 8 a of the long side of the frame-like wall 8. It is also possible to connect to the center of the. It is also possible to provide a columnar support wall portion instead of the support wall portion 10 having a rectangular cross section, provide a thin plate-like support wall portion, or provide another form of support wall portion or flexible portion.
[0043]
Further, instead of the structure in which the male screw type electrode is inserted into the insertion hole of the bus bar, for example, means such as connecting the female electrode of the battery to a bolt or a protrusion (not shown) on the bus bar 2 side may be taken. Is possible.
[0044]
【The invention's effect】
As described above, according to the first aspect of the present invention, the support wall portion of each divided plate body can be bent and moved for each connection member. Even when the position accuracy of the electrode is poor, or when each neighboring electrode is displaced, it is possible to absorb the displacement by moving each connecting member corresponding to each electrode. And it can connect to a connection member reliably. As a result, the connection workability is improved, and the battery and the battery connection plate that have been conventionally disposed of or discarded due to defective dimensions can be used without any problem, and the economic effect is enhanced.
[0045]
In addition, when the operator holds the frame-shaped wall by hand and pushes it in the left-right direction, for example, the support wall portion swings and bends, and the frame-shaped wall is moved integrally with the connecting member, thereby causing a large displacement of the electrode. It can be absorbed reliably and easily at a moving distance. Thereby, the connection workability is further improved.
[0046]
According to the invention described in claim 2 , the support wall portion is bent in the three-dimensional direction, that is, up and down and / or right and left and / or front and back, so that the electrode and the connecting member can be displaced in any direction. Therefore, the misalignment can be absorbed with certainty. Thereby, the connection workability is further improved.
[0047]
According to the invention of claim 3 , each one electrode of two adjacent batteries is simultaneously inserted into two insertion holes of the bus bar, or one electrode of one battery is inserted into one insertion hole of the bus bar. The electrode and the bus bar are inserted and connected by means such as screwing. In this way, each electrode of two adjacent batteries is simultaneously inserted into at most two insertion holes of one bus bar, but at that time, each bus bar can absorb the displacement with the electrode independently. Therefore, even if there is a large positional shift with respect to three or more electrodes adjacent to each other, the positional shift can be absorbed for each bus bar and each electrode can be accurately inserted into the insertion hole. Thereby, connection workability improves.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a battery connection plate according to the present invention.
FIG. 2 is a perspective view showing a battery connection plate.
3 is a cross-sectional view taken along the line AA in FIG.
FIG. 4 is an exploded perspective view showing a state in which a conventional battery connection plate is mounted on a battery assembly.
FIG. 5 is a plan view showing a misalignment absorption type battery connection plate previously proposed by the present applicant.
[Explanation of symbols]
1 Battery connection plate 2 Bus bar (connection member)
4-6 Divided plate body 7 Common connection wall 8 Frame-like wall 10 Support wall part (flexible part)

Claims (3)

複数の並列なバッテリの各電極を直列に接続するための複数の接続部材を有するバッテリ接続プレートにおいて、前記接続部材の数と等しい数の分割プレート本体を有し、各分割プレート本体毎に該接続部材が一つずつ独立して設けられ、各分割プレート本体が、該接続部材を収容する枠状壁と、該枠状壁から延びた可撓性の支持壁部とを有し、各支持壁部が共通連結壁に交差して続いており、各分割プレート本体が前記電極に対して独立して移動可能であることを特徴とするバッテリ接続プレート。A battery connection plate having a plurality of connection members for connecting the electrodes of a plurality of parallel batteries in series, the battery connection plate having a number of divided plate bodies equal to the number of the connection members, and the connection for each divided plate body One member is provided independently, and each divided plate body has a frame-like wall that accommodates the connecting member, and a flexible support wall extending from the frame-like wall. The battery connecting plate is characterized in that the portion continues across the common connecting wall, and each divided plate body is movable independently with respect to the electrode. 前記支持壁部が三次元方向に撓み可能であることを特徴とする請求項1記載のバッテリ接続プレート。The battery connection plate according to claim 1, wherein the support wall portion can be bent in a three-dimensional direction . 前記接続部材が、前記電極に対する一つ又は二つの挿通孔を有するバスバーであることを特徴とする請求項1又は2記載のバッテリ接続プレート。3. The battery connection plate according to claim 1 , wherein the connection member is a bus bar having one or two insertion holes for the electrodes .
JP2000359405A 2000-11-27 2000-11-27 Battery connection plate Expired - Fee Related JP3811348B2 (en)

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