JP3669048B2 - Assembled battery - Google Patents

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JP3669048B2
JP3669048B2 JP12227796A JP12227796A JP3669048B2 JP 3669048 B2 JP3669048 B2 JP 3669048B2 JP 12227796 A JP12227796 A JP 12227796A JP 12227796 A JP12227796 A JP 12227796A JP 3669048 B2 JP3669048 B2 JP 3669048B2
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battery
batteries
supports
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cylindrical
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JPH097564A (en
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浩 河村
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日本電池株式会社
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Description

【０００１】
【産業上の利用分野】
この発明は、複数の密閉形電池を一括して保持する組電池に関する。
【０００２】
【従来の技術】
従来の組電池は、例えば実開昭６０−２２７５２号公報に記載されているように、複数の円筒型電池を互いの周側面が隣接するようにして並べ、周囲を枠体で囲むと共に、各円筒型電池の正負極が露出する両端面に蓋体を取り付けたものであった。枠体は、周囲を囲む側壁とこの側壁から内側に突出する多数の仕切壁とからなり、これらの側壁や仕切壁の間に各円筒型電池を挿入して支持するようになっている。また、ブロック状の枠体に複数の孔を穿設し、各孔にそれぞれ円筒型電池を嵌入させたり、これらの孔を互いに繋いだ形状からなる大きな孔を穿設し、この孔に複数の円筒型電池を一括して嵌入させる場合もある。蓋体には、枠体内の円筒型電池の正負極に対向する面に適宜弾性接続板が配置されて、各円筒型電池間を接続するようになっている。
【０００３】
【発明が解決しようとする課題】
ところで、電池を放電させると内部の化学反応によって熱を発生し、特に大電流を取り出す場合にこの発熱量が多くなる。また、ニッケルカドミウム電池やニッケル水素電池等の密閉形二次電池の場合には、充電時にも発熱する。しかしながら、これらの発熱により電池が高温になると、自己放電によって電池容量が減少したり電池寿命が短くなるおそれがある。従って、電池の使用時の温度は、例えば通常のニッケルカドミウム電池等では放電時が−１０°Ｃ〜６０°Ｃ、充電時は０°Ｃ〜３５°Ｃというように所定の温度範囲内となるように定められている。
【０００４】
ところが、上記従来の組電池は、円筒型電池の周囲を枠体で囲むと共に両端部も蓋体で覆って内部をほぼ密閉状態にしていたため、放電時や充電時にこの円筒型電池から発生した熱を外部に十分に放出することができず、この円筒型電池の温度が規定された範囲を超えて上昇するおそれがあるという問題があった。なお、この問題は、円筒型電池に限らず角型等の他の形状の密閉形電池にも共通する。
【０００５】
この発明は、かかる事情に鑑みてなされたものであり、密閉形電池の上下端部を通気孔が設けられた一対の支持体からなる電池ホルダで保持することにより、密閉形電池から発した熱を外部に放出することができる組電池を提供することを目的としている。
【０００６】
【課題を解決するための手段】
即ち、請求項１の組電池は、上記課題を解決するために、電池ホルダと複数の電池とを備えた組電池において、前記電池ホルダは、上下一対の板状の支持体からなり、各支持体の対向面に、該一対の支持体によって挟持される密閉形電池の正極側又は負極側の密閉部を嵌入させる所定深さの電池穴が複数穿設されると共に、各電池穴の底面の一部に対向面の反対側まで貫通する電極孔が開口され、かつ、該複数の電池穴の間の適宜箇所に対向面から反対側まで貫通する通気孔が開口されたものであり、前記複数の電池は、前記一対の支持体の間に挟持され、かつ、前記各支持体の外側に配した接続体により接続されたものであることを特徴とする。
【０００７】
また、請求項２の組電池は、電池ホルダと複数の電池とを備えた組電池において、前記電池ホルダは、上下一対の板状の支持体からなり、各支持体の対向面に、該一対の支持体によって挟持される密閉形電池の正極側又は負極側の密閉部を嵌入させる所定深さの電池穴が複数穿設されると共に、各電池穴の底面の一部に対向面の反対側まで貫通する電極孔が開口され、かつ、該複数の電池穴と電極孔の内周面の適宜箇所に対向面から反対側まで通じる通気溝が形成されたものであり、前記複数の電池は、前記一対の支持体の間に挟持され、かつ、前記各支持体の外側に配した接続体により接続されたものであることを特徴とする。
【０００８】
【作用】
請求項１の組電池によれば、密閉形電池の正負極側の密閉部を電池穴に嵌入させることにより、通気孔を設けた上下一対の支持体の間に複数の密閉形電池を保持させるので、各密閉形電池から発した熱をこの通気孔を通して外部に放出することができる。また、密閉形電池の外側を向く周側面は、上下一対の支持体の間で外部に露出するので、ここからも熱が外部に放出される。しかも、密閉形電池は、両端部の正負極が電極孔を通して支持体の上側面と下側面に露出するので、ここで接続体により各電池の接続を行うことにより、上下一対の支持体を複数の電池と一体に固定することができる。
【０００９】
請求項２の組電池でも、各密閉形電池から発した熱を電池穴と電極孔の内周面の適宜箇所に対向面から反対側まで通じる通気溝を通して外部に放出することができる。
【００１０】
なお、前記各支持体の側面の適宜箇所に対向面から反対側にまで至る凹溝が形成されていれば、上下一対の支持体で密閉形電池を保持した組電池を複数並べて配置した際に、隣接する支持体の互いに向かい合う側面に形成された凹溝が通気孔と同様の役割を果たすので、この凹溝を通して各密閉形電池から発した熱を外部に放出することができる。
【００１１】
また、前記密閉形電池が正極側と負極側にそれぞれ高さの異なる集電端子を設けたものであり、かつ、前記電池穴が互いに隣接するもの同士で該集電端子の極性による高さの相違分だけ異なる深さに穿設されていれば、隣接する密閉形電池の極性を互いに上下逆になるように配置した場合に、これらの密閉形電池の密閉部が電池穴に嵌入する深さが相違するので、隣接する密閉形電池の正極側と負極側の集電端子の突端を面一にすることができる。従って、これらの集電端子間を接続して複数の密閉形電池を直列接続するための接続体を平板状等の単純な形状とすることができ、接続する極性に応じて形状を変える必要もなくなる。また、この接続体を集電端子にそれぞれねじ止め等によって接続固定することにより、上下一対の支持体を複数の密閉形電池に確実に固定することができる。
【００１２】
また、前記各支持体の対向面とは反対側の面の周端部と通気孔若しくは通気溝の周縁部とのいずれか一方又は双方に突起部が形成されていれば、接続板を取り外す際の回転を防止して隣接する電池との短絡を防止することができるし、組電池を重ねる際にも短絡を防止することができる。
【００１３】
【実施例】
以下、この発明の具体的実施例について図面を参照して説明する。
【００１４】
図１乃至図１３は本発明の一実施例を示すものであって、図１は組電池の組み立て斜視図、図２は支持体の平面図、図３は図２のＡ−Ａ矢視断面図、図４は図２のＢ−Ｂ矢視断面図、図５は支持体に接続板でねじ止めを行う際の組み立て斜視図、図６は組電池の斜視図、図７は図６のＣ−Ｃ矢視断面図、図８は図６のＤ−Ｄ矢視断面図、図９は複数の組電池を並べた場合の部分斜視図、図１０は支持体の他の形状を示す平面図、図１１は図１０に示した支持体を複数並べた場合の角部を示す部分平面図、図１２は支持体の対向面とは反側の面の周縁部や通気孔或いは通気溝の周縁部に突起部を形成した場合の斜視図、図１３は電池穴と電極穴の内周面に通気溝を設けた場合の斜視図である。
【００１５】
本実施例は、ニッケルカドミウム電池又はニッケル水素電池からなる６個の円筒型電池を用いた組電池について説明する。ただし、本発明は、電池の種類や形状をこれに限定するものではなく、通常のマンガン乾電池であってもよく、また、角型等の他の形状の密閉形電池であってもよい。図１に示すように、６個の円筒型電池１は、それぞれ隣接するもの同士の正負極が上下逆になるように配置されて、３個ずつ２列に並べられる。各円筒型電池１は、円筒形の両端面にそれぞれ正負極の集電端子１ａ，１ｂが取り付けられている。これらの集電端子１ａ，１ｂは、雌ねじ孔が穿設された中央部の接続面を四方の脚部で支持して突出させると共に、この脚部を円筒型電池１の正負極の円筒端面にそれぞれスポット溶接によって固定した導電性の接続部材である。ただし、正極側の集電端子１ａは、円筒型電池１の正極の円筒端面に設けられたガス抜き用の安全弁を収納する図示しない凸部を覆うように取り付けられるために、負極側の集電端子１ｂよりも背が高くなっている。
【００１６】
上記６個の円筒型電池１は、上下一対の支持体２，２によって挟持される。これらの支持体２，２は、ほぼ方形板状の絶縁性の合成樹脂板からなり、共に同一形状のものを互いに向かい合わせに配置して使用する。各支持体２は、図２乃至図４に示すように、対向面となる表面に３個ずつ２列にわたって、円筒型電池１の円筒部と同じ径又はわずかに大径の電池穴２ａが穿設されている。各電池穴２ａは、円筒型電池１の集電端子１ａ，１ｂの高さの相違分だけ深さの異なる２種類の深さに穿設され、隣接するもの同士の深さが互いに異なるように配置されている。そして、浅い方の電池穴２ａには、円筒型電池１の正極側の円筒部が嵌入され、深い方の電池穴２ａには、円筒型電池１の負極側の円筒部が嵌入される。また、各電池穴２ａの底面には、この電池穴２ａよりも径の小さい電極孔２ｂが裏面側に貫通して開口されている。この電極孔２ｂは、電池穴２ａに円筒型電池１の円筒部が嵌入された際に、集電端子１ａ，１ｂの突出部を入り込ませ、この円筒部の肩部が電池穴２ａの底面に当接できるようにしたものである。しかも、この際、正極側の円筒部と負極側の円筒部が嵌入される電池穴２ａの深さが異なるために、正負極双方の集電端子１ａ，１ｂの突端の接続面が共に支持体２の裏面とほぼ面一となる。
【００１７】
上記支持体２において、四方の電池穴２ａに囲まれた２箇所の間隙には、表面から裏面側に貫通する通気孔２ｃが開口されている。また、支持体２の周囲の側面には、隣接する電池穴２ａの各間に、それぞれ表面から裏面側に至る凹溝２ｄが形成されている。さらに、方形の支持体２の四方の隅は、それぞれ円弧凸面状に削られてアール部２ｅが形成されている。
【００１８】
上記構成の上下一対の支持体２，２は、図１に示すように、互いに表面側が対向し、かつ、向かい合う電池穴２ａ，２ａの深さが異なるような向きに配置される。そして、図１の矢印に示すように、６個の円筒型電池１の正負極側の円筒部を上下の支持体２，２の各電池穴２ａに嵌入させる。すると、図５に示すように、上下の支持体２，２の間に６個の円筒型電池１が挟持されて、各円筒型電池１の集電端子１ａ，１ｂが電極孔２ｂを通して露出することになる。そこで、上側の支持体２の裏面側（上向き面側）については、列方向に隣接する集電端子１ａ，１ｂ間にそれぞれ導電体からなる平板状の接続板３を架け渡してボルト４，４でねじ止めし、下側の支持体２の裏面側（下向き面側）については、列をまたいで隣接する集電端子１ａ，１ｂ間にそれぞれ同様の接続板３を架け渡してボルト４，４でねじ止めを行うと、図６に示すように、接続板３を取り付けなかった上側の支持体２の２箇所の電極孔２ｂに露出する正負極の集電端子１ａ，１ｂの間で６個の円筒型電池１が全て直列接続されることになる。これらの接続板３のボルト４によるねじ止めは、接続板３の両端に穿設されたねじ孔にそれぞれボルト４の雄ねじ部を通し集電端子１ａ，１ｂの接続面の雌ねじ孔に螺着することにより行われる。この際、図７に示すように、双方の集電端子１ａ，１ｂの接続面が支持体２の裏面とほぼ面一となるので、平板状の接続板３は、この支持体２の裏面にほぼ接する平行な位置にそのまま配置してボルト４によりねじ止めすることができる。また、これらの接続板３をねじ止めすることにより、上下の支持体２，２が６個の円筒型電池１と一体に固定されることになる。
【００１９】
このようにして一対の支持体２，２によって６個の円筒型電池１を保持した電池ホルダは、図８の矢印に示すように、各支持体２の通気孔２ｃを介して円筒型電池１の内側を向く周側面付近と外部との間の通気が可能となるので、この円筒型電池１から発生した熱を速やかに外部に放出することができるようになる。また、２列に配置された円筒型電池１の外側を向く周側面は、上下の支持体２，２の間でそのまま外部に露出されるので、ここからも熱を放出することができる。従って、これら通気孔２ｃ等によって円筒型電池１の放熱を促進することにより、この円筒型電池１の温度上昇を抑制し所定範囲を超えないようにすることができる。なお、この通気孔２ｃ等の通気は、自然対流による場合の他に、特に発熱量が大きいときは、ファン等を用いて強制的に換気を行うようにしたものであってもよい。
【００２０】
また、上記一対の支持体２，２によって６個の円筒型電池１を保持した電池ホルダを、図９に示すように、複数並べて配置した場合には、隣接する支持体２の互いに向かい合う側面に形成された各凹溝２ｄ同士が合わさって通気孔２ｃと同様の貫通部５を形成する。従って、このように多数の円筒型電池１が密集された場合であっても、これら凹溝２ｄの貫通部５から熱を放出することができるので、放熱効果が低下するようなおそれが生じない。さらに、４つの電池ホルダが接する角部では、各支持体２の隅のアール部２ｅが合わさって貫通部６を形成するので、この貫通部６からも同様に熱を放出することができる。
【００２１】
尚、上記方形の支持体２の四隅のアール部２ｅに代えて、図１０に示すように、円弧凹面状に削った隅溝２ｇを形成した場合には、４つの電池ホルダが接する角部の貫通部６が図１１に示すように通気孔２ｃと同様の円筒孔となるので、本来の通気孔２ｃや凹溝２ｄが合わさった貫通部５と形状を揃えることができる。
【００２２】
次に、図１２に示すように、支持体２の対向面とは反対側の面の周端部や通気孔２ｃ、通気溝２ｄの周縁部或いはアール部２ｅの周縁部に同じ高さだけ突出して突起部２ｆを形成しても良い。このように、突起部２ｆを設けると接続板３を取り外す際の回転を防止して隣接する電池との短絡を防止することができるし、組電池を重ねる際にも短絡を防止することができる。尚、この突起部２ｆは周縁部すべてに設ける必要はなく支持体２の２〜３箇所に適宜設ければよい。
【００２３】
また、上記実施例では、複数の電池穴２ａと電池穴２ａとの間の適宜箇所に通気孔２ｃを設けたが、図１３に示すように、この通気孔２ｃの代わりに複数の電池穴２ａ及び電極孔２ｂの内周面の適宜箇所に対向面から反対側まで通じる通気溝２ｈを設けても良い。
【００２４】
本実施例では、６個の円筒型電池１を保持する電池ホルダについて説明したが、この円筒型電池１の個数は任意である。この際、各支持体２の電池穴２ａ等もこの円筒型電池１の個数及び並び方に応じて適宜穿設する。
【００２５】
なお、本実施例では、図６および図９に示したとおり、接続板３やボルト４等の導電部が露出しているが、単電池間を接続した後、この部分を絶縁物質等で覆うことにより、誤って電池間を短絡させる等の危険を防ぐことができる。
【００２６】
【発明の効果】
以上の説明から明らかなように、この発明の組電池によれば、各支持体の通気孔や上下一対の支持体間の側面露出部を通して各円筒型電池から発生した熱を外部に放出することができるので、自然対流により又は強制換気を行うことによってこれらの円筒型電池の温度上昇を抑制することができる。また、一対の支持体からなる電池ホルダで円筒型電池を保持した組電池を複数並べて配置した場合にも、隣接する支持体間の凹溝を通して熱を外部に放出することができるので、多数の円筒型電池が密集された場合であっても確実に温度上昇を抑制することができる。さらに、接続体により各電池間の接続を行うことにより、上下一対の支持体を複数の電池と一体に固定することができる。
【図面の簡単な説明】
【図１】 本発明の一実施例を示すものであって、組電池の組み立て斜視図である。
【図２】 本発明の一実施例を示すものであって、支持体の平面図である。
【図３】 本発明の一実施例を示すものであって、図２のＡ−Ａ矢視断面図である。
【図４】 本発明の一実施例を示すものであって、図２のＢ−Ｂ矢視断面図である。
【図５】 本発明の一実施例を示すものであって、支持体に接続板でねじ止めを行う際の組み立て斜視図である。
【図６】 本発明の一実施例を示すものであって、組電池の斜視図である。
【図７】 本発明の一実施例を示すものであって、図６のＣ−Ｃ矢視断面図である。
【図８】 本発明の一実施例を示すものであって、図６のＤ−Ｄ矢視断面図である。
【図９】 本発明の一実施例を示すものであって、複数の組電池を並べた場合の部分斜視図である。
【図１０】 本発明の一実施例を示すものであって、支持体の他の形状を示す平面図である。
【図１１】 本発明の一実施例を示すものであって、図１０に示した支持体を複数並べた場合の角部を示す部分平面図である。
【図１２】 本発明の一実施例を示すものであって、支持体の対向面とは反側の面の周縁部や通気孔或いは通気溝の周縁部に突起部を形成した場合の斜視図である。
【図１３】 本発明の一実施例を示すものであって、電池穴と電極穴の内周面に通気溝を設けた場合の斜視図である。
【符号の説明】
１ 円筒型電池
１ａ 集電端子
１ｂ 集電端子
２ 支持体
２ａ 電池穴
２ｂ 電極孔
２ｃ 通気孔
２ｄ 凹溝
２ｅ アール部
２ｆ 突起部
２ｇ 隅溝
２ｈ 通気溝[0001]
[Industrial application fields]
The present invention relates to an assembled battery that collectively holds a plurality of sealed batteries .
[0002]
[Prior art]
As described in Japanese Utility Model Laid-Open No. 60-22752, for example, a conventional assembled battery is arranged such that a plurality of cylindrical batteries are adjacent to each other on their peripheral side surfaces and surrounded by a frame. The lid was attached to both end faces where the positive and negative electrodes of the cylindrical battery were exposed. The frame includes a side wall surrounding the periphery and a number of partition walls protruding inwardly from the side wall, and each cylindrical battery is inserted and supported between the side walls and the partition wall. Also, a plurality of holes are drilled in the block-shaped frame, and a cylindrical battery is inserted into each hole, or a large hole having a shape connecting these holes is formed, and a plurality of holes are formed in the holes. In some cases, cylindrical batteries may be inserted together. The lid is appropriately provided with an elastic connection plate on the surface facing the positive and negative electrodes of the cylindrical battery in the frame so as to connect the cylindrical batteries.
[0003]
[Problems to be solved by the invention]
By the way, when the battery is discharged, heat is generated by an internal chemical reaction, and the amount of generated heat increases especially when a large current is taken out. In the case of a sealed secondary battery such as a nickel cadmium battery or a nickel metal hydride battery, heat is also generated during charging. However, when the temperature of the battery becomes high due to these heat generations, the battery capacity may be reduced or the battery life may be shortened by self-discharge. Therefore, the temperature at the time of use of the battery is within a predetermined temperature range such that, for example, a normal nickel cadmium battery or the like is -10 ° C to 60 ° C during discharge and 0 ° C to 35 ° C during charge. It is prescribed as follows.
[0004]
Thermal However, the conventional battery pack, because it was substantially sealed inside the periphery of the cylindrical battery cover at both ends also the lid surrounds a frame body, generated from the cylindrical batteries during the discharging time and the charging Cannot be fully discharged to the outside, and there is a problem that the temperature of the cylindrical battery may rise beyond a specified range. Note that this problem is not limited to cylindrical batteries, but is common to other types of sealed batteries such as rectangular batteries.
[0005]
Heat The present invention has been made in view of such circumstances, the upper and lower ends of the sealed battery vents by holding a pair of battery holder comprising a support provided, emitted from closely-closed cell It aims at providing the assembled battery which can discharge | release outside.
[0006]
[Means for Solving the Problems]
Specifically, in order to solve the above problems, the assembled battery according to claim 1 is an assembled battery including a battery holder and a plurality of batteries, wherein the battery holder includes a pair of upper and lower plate-shaped supports, A plurality of battery holes of a predetermined depth are formed on the opposite surfaces of the body so as to fit the positive side or negative side sealing part of the sealed battery held by the pair of supports, and the bottom surface of each battery hole is electrode hole penetrating to the other side of the facing surface portion is opened, and, which vent holes penetrating from the surface facing the appropriate position between the battery holes of the plurality of to the opposite side is opened, said plurality The battery is characterized in that it is sandwiched between the pair of supports and connected by a connecting body arranged outside the supports .
[0007]
Further , the assembled battery according to claim 2 is an assembled battery including a battery holder and a plurality of batteries, wherein the battery holder includes a pair of upper and lower plate-like supports , and the pair of support members are arranged on opposite surfaces of the supports. A plurality of battery holes having a predetermined depth for fitting the positive or negative sealed portion of the sealed battery sandwiched by the support are formed, and a part of the bottom surface of each battery hole is opposite to the opposite surface. And a plurality of battery holes and an inner circumferential surface of the electrode hole is formed with a ventilation groove that leads from the opposite surface to the opposite side , and the plurality of batteries, It is sandwiched between the pair of supports and is connected by a connecting body arranged outside the supports .
[0008]
[Action]
According to the assembled battery of claim 1 , a plurality of sealed batteries are held between a pair of upper and lower support bodies provided with vent holes by fitting the sealed portions on the positive and negative electrode sides of the sealed batteries into the battery holes. Therefore, the heat generated from each sealed battery can be released to the outside through this vent hole. Further, since the peripheral side surface facing the outside of the sealed battery is exposed to the outside between the pair of upper and lower supports, heat is also released to the outside from here. Moreover, since the positive and negative electrodes at both ends of the sealed battery are exposed to the upper and lower surfaces of the support through the electrode holes , a plurality of pairs of upper and lower supports are formed by connecting the batteries with the connection body. It can be fixed integrally with the battery.
[0009]
Also in the assembled battery according to the second aspect, the heat generated from each sealed battery can be released to the outside through a ventilation groove that communicates from the facing surface to the opposite side at appropriate locations on the inner peripheral surface of the battery hole and the electrode hole.
[0010]
In addition, if a concave groove extending from the opposing surface to the opposite side is formed at an appropriate place on the side surface of each support body, when a plurality of assembled batteries holding sealed batteries are arranged side by side with a pair of upper and lower support bodies, Since the concave grooves formed on the side surfaces of the adjacent support members facing each other play the same role as the air holes, the heat generated from each sealed battery can be released to the outside through the concave grooves.
[0011]
Further, the sealed battery is provided with current collecting terminals having different heights on the positive electrode side and the negative electrode side, respectively, and the battery holes are adjacent to each other, and the height depending on the polarity of the current collecting terminal is If the holes are drilled at different depths by the difference, the depth at which the sealed portions of these sealed batteries are inserted into the battery holes when the polarities of adjacent sealed batteries are placed upside down. Therefore, the protruding ends of the current collecting terminals on the positive electrode side and the negative electrode side of the adjacent sealed batteries can be flush with each other. Therefore, the connection body for connecting these current collecting terminals to connect a plurality of sealed batteries in series can be made into a simple shape such as a flat plate shape, and the shape needs to be changed according to the polarity to be connected. Disappear. Also, by connecting the fixed by respective screws or the like to the collector terminal of the connector, it is possible to reliably fix the upper and lower pair of supports into a plurality of sealed batteries.
[0012]
Further, when the projection is formed on one or both of the peripheral end of the surface opposite to the opposing surface of each support and the peripheral edge of the vent or the vent groove, the connecting plate is removed. Can be prevented from being short-circuited with adjacent batteries, and can be prevented from being short-circuited even when the assembled batteries are stacked.
[0013]
【Example】
Specific embodiments of the present invention will be described below with reference to the drawings.
[0014]
1 to 13 show an embodiment of the present invention. FIG. 1 is an assembled perspective view of an assembled battery , FIG. 2 is a plan view of a support, and FIG. 3 is a cross-sectional view taken along line AA in FIG. 4 is a cross-sectional view taken along the line BB in FIG. 2, FIG. 5 is an assembled perspective view when the support is screwed with a connection plate, FIG. 6 is a perspective view of the assembled battery , and FIG. 8 is a sectional view taken along the line D-D in FIG. 6, FIG. 9 is a partial perspective view when a plurality of assembled batteries are arranged, and FIG. 10 is a plan view showing another shape of the support. FIG. 11 is a partial plan view showing a corner portion when a plurality of supports shown in FIG. 10 are arranged, and FIG. 12 is a diagram showing a peripheral portion of a surface opposite to the opposite surface of the support, a vent hole or a vent groove. FIG. 13 is a perspective view when a protrusion is formed on the peripheral edge, and FIG. 13 is a perspective view when a ventilation groove is provided on the inner peripheral surfaces of the battery hole and the electrode hole.
[0015]
In this example, an assembled battery using six cylindrical batteries made of nickel cadmium batteries or nickel metal hydride batteries will be described. However, the present invention is not limited to the type and shape of the battery, and may be a normal manganese dry battery or a sealed battery of other shapes such as a square shape. As shown in FIG. 1, the six cylindrical batteries 1 are arranged so that the positive and negative electrodes of the adjacent ones are turned upside down and arranged three by two in two rows. Each cylindrical battery 1 has positive and negative current collecting terminals 1a and 1b attached to both cylindrical end faces. These current collecting terminals 1a and 1b support and project the central connection surface in which the female screw holes are formed by the four leg portions, and the leg portions are formed on the cylindrical end surfaces of the positive and negative electrodes of the cylindrical battery 1. Each is a conductive connecting member fixed by spot welding. However, since the current collector terminal 1a on the positive electrode side is attached so as to cover a convex portion (not shown) that houses the safety valve for venting provided on the cylindrical end surface of the positive electrode of the cylindrical battery 1, the current collector terminal on the negative electrode side It is taller than the terminal 1b.
[0016]
The six cylindrical batteries 1 are sandwiched between a pair of upper and lower supports 2 and 2. These supports 2 and 2 are made of a substantially square plate-like insulating synthetic resin plate, and both of them having the same shape are arranged facing each other. As shown in FIGS. 2 to 4, each support body 2 is formed with battery holes 2 a having the same diameter or slightly larger diameter as the cylindrical portion of the cylindrical battery 1 over two rows on the surface to be the opposite surface. It is installed. Each battery hole 2a is perforated at two different depths by the difference in height of the current collecting terminals 1a and 1b of the cylindrical battery 1 so that adjacent ones have different depths. Has been placed. The cylindrical portion on the positive electrode side of the cylindrical battery 1 is inserted into the shallower battery hole 2a, and the cylindrical portion on the negative electrode side of the cylindrical battery 1 is inserted into the deeper battery hole 2a. In addition, on the bottom surface of each battery hole 2a, an electrode hole 2b having a diameter smaller than that of the battery hole 2a is opened through the back surface side. When the cylindrical portion of the cylindrical battery 1 is inserted into the battery hole 2a, the electrode hole 2b allows the protruding portions of the current collecting terminals 1a and 1b to enter, and the shoulder portion of the cylindrical portion is formed on the bottom surface of the battery hole 2a. It is designed to make contact. In addition, since the depths of the battery holes 2a into which the positive electrode side cylindrical portion and the negative electrode side cylindrical portion are inserted are different, the connecting surfaces of the projecting ends of the current collecting terminals 1a and 1b of both the positive and negative electrodes are both supports. 2 is substantially flush with the back surface of the plate.
[0017]
In the support 2, air holes 2 c that penetrate from the front surface to the back surface are opened in two spaces surrounded by the four battery holes 2 a. Further, on the side surface around the support 2, a concave groove 2 d is formed between the adjacent battery holes 2 a from the front surface to the back surface side. Further, the four corners of the rectangular support 2 are each cut into an arc convex shape to form a rounded portion 2e.
[0018]
As shown in FIG. 1, the pair of upper and lower support bodies 2, 2 having the above-described configuration are arranged in such directions that the surface sides face each other and the depths of the battery holes 2 a, 2 a facing each other are different. Then, as shown by the arrows in FIG. 1, the cylindrical portions on the positive and negative sides of the six cylindrical batteries 1 are fitted into the battery holes 2 a of the upper and lower supports 2, 2. Then, as shown in FIG. 5, the six cylindrical batteries 1 are sandwiched between the upper and lower supports 2 and 2, and the current collecting terminals 1a and 1b of each cylindrical battery 1 are exposed through the electrode holes 2b. It will be. Therefore, on the back surface side (upward surface side) of the upper support 2, a flat connection plate 3 made of a conductor is bridged between the current collecting terminals 1 a and 1 b adjacent in the column direction, and the bolts 4 and 4 are connected. For the back side (downward side) of the lower support 2, the same connecting plate 3 is bridged between adjacent current collecting terminals 1 a and 1 b across the rows, and bolts 4, 4 are used. As shown in FIG. 6, six screws are connected between the positive and negative current collecting terminals 1a and 1b exposed in the two electrode holes 2b of the upper support 2 to which the connection plate 3 is not attached. The cylindrical batteries 1 are all connected in series. The screwing of the connection plate 3 with the bolt 4 is performed by passing the male screw portion of the bolt 4 through the screw hole formed at both ends of the connection plate 3 and screwing into the female screw hole of the connection surface of the current collecting terminals 1a and 1b. Is done. At this time, as shown in FIG. 7, since the connection surfaces of both current collecting terminals 1 a and 1 b are substantially flush with the back surface of the support 2, the flat connection plate 3 is placed on the back surface of the support 2. It can be arranged as it is at a substantially parallel position and can be screwed with the bolt 4. Further, by screwing these connection plates 3, the upper and lower supports 2, 2 are fixed integrally with the six cylindrical batteries 1.
[0019]
In this manner, the battery holder holding the six cylindrical batteries 1 by the pair of supports 2 and 2 has the cylindrical battery 1 through the vent 2c of each support 2 as shown by the arrows in FIG. As a result, ventilation between the vicinity of the circumferential side facing the inside of the battery and the outside can be performed, so that the heat generated from the cylindrical battery 1 can be quickly released to the outside. Moreover, since the peripheral side surface which faces the outer side of the cylindrical battery 1 arrange | positioned in two rows is exposed as it is between the upper and lower support bodies 2 and 2, it can discharge | release heat also from here. Therefore, by accelerating the heat radiation of the cylindrical battery 1 by the air holes 2c and the like, the temperature rise of the cylindrical battery 1 can be suppressed so as not to exceed the predetermined range. In addition to the case of natural convection, the ventilation holes 2c and the like may be forcibly ventilated by using a fan or the like, particularly when the heat generation amount is large.
[0020]
Further, when a plurality of battery holders holding the six cylindrical batteries 1 by the pair of supports 2 and 2 are arranged side by side as shown in FIG. 9, the side surfaces of the adjacent supports 2 facing each other are arranged. The formed concave grooves 2d are joined together to form the penetrating portion 5 similar to the vent hole 2c. Therefore, even when such a large number of cylindrical batteries 1 are densely packed, heat can be released from the through portions 5 of the concave grooves 2d, so that there is no possibility that the heat dissipation effect is reduced. . Furthermore, at the corners where the four battery holders are in contact, the rounded portions 2e at the corners of the respective support bodies 2 are combined to form the through portion 6, so that heat can be released from the through portion 6 in the same manner.
[0021]
In addition, instead of the four corner rounded portions 2e of the rectangular support 2, as shown in FIG. 10, when the corner groove 2g cut into the arc concave shape is formed, the corner portions where the four battery holders are in contact with each other are formed. Since the penetrating portion 6 is a cylindrical hole similar to the vent hole 2c as shown in FIG. 11, the shape can be aligned with the penetrating portion 5 where the original vent hole 2c and the concave groove 2d are combined.
[0022]
Next, as shown in FIG. 12, it protrudes by the same height to the peripheral edge part of the surface on the opposite side to the opposing surface of the support body 2, the peripheral part of the ventilation hole 2c, the ventilation groove 2d, or the peripheral part of the round part 2e. Thus, the protrusion 2f may be formed. Thus, when the protrusion 2f is provided, rotation when removing the connection plate 3 can be prevented to prevent a short circuit with an adjacent battery, and a short circuit can also be prevented when stacking assembled batteries. . In addition, this protrusion part 2f does not need to provide in all the peripheral parts, and should just provide it suitably in 2 to 3 places of the support body 2.
[0023]
In the above embodiment, the air holes 2c are provided at appropriate positions between the battery holes 2a and the battery holes 2a. However, as shown in FIG. 13, a plurality of battery holes 2a are used instead of the air holes 2c. In addition, a ventilation groove 2h that communicates from the opposing surface to the opposite side may be provided at an appropriate location on the inner peripheral surface of the electrode hole 2b.
[0024]
In the present embodiment, the battery holder that holds the six cylindrical batteries 1 has been described. However, the number of the cylindrical batteries 1 is arbitrary. At this time, the battery holes 2 a and the like of each support 2 are also appropriately drilled according to the number and arrangement of the cylindrical batteries 1.
[0025]
In this embodiment, as shown in FIGS. 6 and 9, the conductive portions such as the connection plate 3 and the bolts 4 are exposed. After connecting the cells, this portion is covered with an insulating material or the like. Therefore, it is possible to prevent dangers such as accidentally short-circuiting the batteries.
[0026]
【The invention's effect】
As is apparent from the above description, according to the assembled battery of the present invention, the heat generated from each cylindrical battery is released to the outside through the vent holes of each support and the side exposed portions between the pair of upper and lower supports. Therefore, the temperature rise of these cylindrical batteries can be suppressed by natural convection or by forced ventilation. In addition, even when a plurality of assembled batteries holding cylindrical batteries are arranged side by side with a battery holder made up of a pair of supports, heat can be released to the outside through the recessed grooves between adjacent supports, Even when the cylindrical batteries are densely packed, the temperature rise can be surely suppressed. Furthermore, the pair of upper and lower support bodies can be integrally fixed to a plurality of batteries by connecting the batteries with the connection body.
[Brief description of the drawings]
FIG. 1 is an assembled perspective view of an assembled battery according to an embodiment of the present invention.
FIG. 2 is a plan view of a support according to an embodiment of the present invention.
3 shows an embodiment of the present invention and is a cross-sectional view taken along the line AA in FIG.
4 shows an embodiment of the present invention and is a cross-sectional view taken along the line BB in FIG.
FIG. 5 shows an embodiment of the present invention and is an assembled perspective view when the support is screwed with a connection plate.
FIG. 6 is a perspective view of an assembled battery according to an embodiment of the present invention.
7 shows an embodiment of the present invention and is a cross-sectional view taken along the line CC of FIG.
8 shows an embodiment of the present invention and is a cross-sectional view taken along the line DD in FIG.
FIG. 9 is a partial perspective view when a plurality of assembled batteries are arranged according to an embodiment of the present invention.
FIG. 10 is a plan view showing another embodiment of the present invention, showing another embodiment of the present invention.
FIG. 11 is a partial plan view showing a corner portion when a plurality of the supports shown in FIG. 10 are arranged, showing an embodiment of the present invention.
FIG. 12 shows an embodiment of the present invention, and is a perspective view when protrusions are formed on the peripheral edge of the surface opposite to the opposing surface of the support, or on the peripheral edge of the ventilation hole or ventilation groove. It is.
FIG. 13 shows an embodiment of the present invention and is a perspective view in the case where ventilation grooves are provided on the inner peripheral surfaces of the battery hole and the electrode hole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylindrical battery 1a Current collection terminal 1b Current collection terminal 2 Support body 2a Battery hole 2b Electrode hole 2c Vent hole 2d Groove 2e Earl part 2f Projection part 2g Corner groove 2h Vent groove

Claims (2)

電池ホルダと複数の電池とを備えた組電池において、
前記電池ホルダは、上下一対の板状の支持体からなり、各支持体の対向面に、該一対の支持体によって挟持される密閉形電池の正極側又は負極側の密閉部を嵌入させる所定深さの電池穴が複数穿設されると共に、各電池穴の底面の一部に対向面の反対側まで貫通する電極孔が開口され、かつ、該複数の電池穴の間の適宜箇所に対向面から反対側まで貫通する通気孔が開口されたものであり、
前記複数の電池は、前記一対の支持体の間に挟持され、かつ、前記各支持体の外側に配した接続体により接続されたものであることを特徴とする組電池。 In an assembled battery comprising a battery holder and a plurality of batteries,
The battery holder is composed of a pair of upper and lower plate-shaped supports, and a predetermined depth for fitting a sealed portion on the positive electrode side or the negative electrode side of the sealed battery sandwiched between the pair of supports on the opposing surface of each support body. A plurality of battery holes are formed, and an electrode hole penetrating to the opposite side of the opposing surface is opened in a part of the bottom surface of each battery hole, and the opposing surface is provided at an appropriate position between the plurality of battery holes. The vent that penetrates from the side to the opposite side is opened ,
Wherein the plurality of batteries are sandwiched between the pair of supports, and the battery pack, characterized in that said those connected by connecting member arranged on the outside of each support. 電池ホルダと複数の電池とを備えた組電池において、
前記電池ホルダは、上下一対の板状の支持体からなり、各支持体の対向面に、該一対の支持体によって挟持される密閉形電池の正極側又は負極側の密閉部を嵌入させる所定深さの電池穴が複数穿設されると共に、各電池穴の底面の一部に対向面の反対側まで貫通する電極孔が開口され、かつ、該複数の電池穴と電極孔の内周面の適宜箇所に対向面から反対側まで通じる通気溝が形成されたものであり、
前記複数の電池は、前記一対の支持体の間に挟持され、かつ、前記各支持体の外側に配した接続体により接続されたものであることを特徴とする組電池。 In an assembled battery comprising a battery holder and a plurality of batteries,
The battery holder is composed of a pair of upper and lower plate-shaped supports, and a predetermined depth for fitting a sealed portion on the positive electrode side or the negative electrode side of the sealed battery sandwiched between the pair of supports on the opposing surface of each support body. A plurality of battery holes are formed, and an electrode hole penetrating to a part of the bottom surface of each battery hole to the opposite side of the opposing surface is opened, and an inner peripheral surface of the plurality of battery holes and the electrode hole is formed. A ventilation groove that leads from the opposite surface to the opposite side is formed at an appropriate place ,
Wherein the plurality of batteries are sandwiched between the pair of supports, and the battery pack, characterized in that said those connected by connecting member arranged on the outside of each support.
JP12227796A 1995-04-18 1996-04-18 Assembled battery Expired - Lifetime JP3669048B2 (en)

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