JP3964490B2

JP3964490B2 - Storage battery

Info

Publication number: JP3964490B2
Application number: JP02726397A
Authority: JP
Inventors: 壮比佐; 憲二中野
Original assignee: Furukawa Battery Co Ltd
Current assignee: Furukawa Battery Co Ltd
Priority date: 1997-01-27
Filing date: 1997-01-27
Publication date: 2007-08-22
Anticipated expiration: 2017-01-27
Also published as: JPH10208723A

Description

【０００１】
【発明の属する技術分野】
本発明は、電気自動車やレジャー用などの電気機器の電源として用いる蓄電池に関する。
【０００２】
【従来の技術】
従来の蓄電池としては、図１４に示すように、モノブロック合成樹脂成形電槽Ａ内のセル室Ｂ内に収容された極板群Ｃの陰極板又は陽極板の耳列を接続したストラップＤより円柱状の端子用極柱Ｅを直立させ、その上端部ｅを、該電槽Ａに施された合成樹脂成形電槽蓋Ｆの蓋板ｆに鋳込まれている鉛ブッシングＧの貫通孔内に嵌合し、その嵌合された上端部ｅの頂面とその外面の鉛ブッシングＧの頂面にバーナーを当てゝ相互の境界部を溶融してその蓄電池端子を構成したものが知られている。
【０００３】
【発明が解決しようとする課題】
しかし乍ら、電解液が該蓋板ｆと該鉛ブッシングＧとの境界部に侵入し滲み上がり外部に漏出する恐れがある。かゝる電解液の滲み上がりを防止する対策として、該鉛ブッシングＧの外周には複数段に鍔ｇを設けているが、充分な防止効果を発揮するには、鍔の段数を多くし、且つ距離を長くする必要があるため、鉛ブッシングの上下方向の長さ及び重量が増大し、従って、これに伴い、これを鋳込む蓋板の厚さも厚くなり、該極板群ＣのストラップＤとその上方の蓋板ｆの裏面と間の空間の高さｈが増大し、電池の容積効率の低下をもたらすなどの不都合を伴った。従って、かゝる従来の不都合を解決し、端子用極柱を介しての電解液の電槽蓋外部への漏出を防止すると共に、容積効率の増大し且つエネルギー密度の増大をもたらす蓄電池の開発が望まれる。
【０００４】
【課題を解決するための手段】
本発明は、上記の従来の課題を解決し、上記の要望をもたらす蓄電池を提供するもので、電槽内のセル室に収容された極板群の正極耳列及び負極耳列を接続した端子用ストラップに板状の端子用極柱を植設し、該板状端子用極柱の少なくとも上端板部を、該電槽に施された電槽蓋の蓋板の１側に該蓋板の上面に突設した囲枠の内部空間内に収容すると共に、その囲枠の枠壁に設けた貫通孔に対面させる一方、該電槽蓋の該蓋板の上面に横設した端子接続板の一端から直立させた耳部を前記の囲枠の内側枠壁の貫通孔に対面させ、該貫通孔を介して互いに対面する該端子用極柱の上端板部と該端子接続板の該耳部とを抵抗溶接により接続し、該端子接続板の他端部を該蓋板の上面に直立せしめた正極端子又は負極端子に接続し、該囲枠空間の上面に被覆板を施したことを特徴とする。
【０００５】
更に本発明は、更に容積効率と電池エネルギー密度の向上をもたらす蓄電池を提供するもので、該電槽の各仕切壁の一部を、セル間接続する位置において、電槽の周側壁の上端縁より上方に突出する壁部に形成し、該突出壁部の両面に、相隣るセル室の極板群の互いに異極性のストラップの立上がりタブを当接し、該仕切壁に設けた貫通孔を介して抵抗溶接によりセル間接続することを特徴とする。
【０００６】
更に本発明は、上記の蓄電池において、安全な排気装置を具備せしめた蓄電池を提供するもので、該電槽蓋の蓋板に電槽の各セル室に対応する位置に、筒状の排気孔を設け、該排気筒に安全弁を装着し、更に該蓋板の上面にこれら排気筒を囲繞する共通の排気用囲枠を突設し、該囲枠の上面に排気覆蓋を施し、該排気覆蓋の一部を延長して該囲枠空間の上面を被覆する該被覆板を含む共通の被覆板に形成したことを特徴とする。
【０００７】
更に本発明は、更に容積効率と電池エネルギー密度の向上をもたらす蓄電池を提供するもので、電槽の各セル室内に収容した極板群の上方の両側に突出する正，負極耳列を接続する正極ストラップと負極ストラップを、電槽の上方に位置せしめ、各仕切壁に該電槽の周側壁より上方に突出する突出壁部を設け、該突出壁部に設けた貫通孔を介して相隣り対向する正極ストラップのタブと負極ストラップのタブとを互いにセル間接続し、両端のセル室の上記の正極ストラップ及び負極ストラップに植設した板状端子用極柱を、該電槽に施した電槽蓋の蓋板に突出した囲枠内に夫々収容すると共に、該蓋板の両側において突設した囲枠内に前記のセル間接続部を有する各突出壁部を収容したことを特徴とする。
【０００８】
更に本発明は、上記の蓄電池において、その該板状極柱端子用極柱の収容囲枠を利用して更にコンパクトな排気装置を備えた蓄電池を提供するもので、板状端子用極柱の少なくとも上端板部を収容した該囲枠内に該安全弁を装着した排気筒を収容することを特徴とする。
【０００９】
更に本発明は、上記の更にコンパクトな排気装置を備えた蓄電池の好ましい態様を提供するもので、該蓋板の１側の長矩形囲枠に、安全弁を装着した排気筒を配設し且つ上面に共通の排気用リブ状囲枠を突設した長矩形蓋板を施し、その他側の長矩形囲枠に長矩形蓋板を施し、これらの蓋板上面に排気覆板を施したことを特徴とする。
【００１０】
更に本発明は、上記の蓄電池において、電槽蓋の蓋板を厚くすることなく、而もその上面にその幅方向の中間に容易に端子を具備した蓄電池を提供するもので、該陰極端子及び陽極端子は、夫々角形の頭部をもつボルトから成り、該ボルトの頭部は、該電槽蓋の該蓋板の上面に形成した同一形状の角形凹面に嵌着し、該端子接続板の他端部を、これに設けた貫通孔で該ボルトの柱状部に嵌合し、該ボルトの柱状部に施したナットにより該他端部を該ボルトの頭部に締め付けたことを特徴とする。
【００１１】
更に本発明は、上記の蓄電池において、該端子接続板との溶接作業を容易にし、且つ該端子接続板の補強をもたらす蓄電池を提供するもので、該蓋板の上面に、該端子接続板の設置面を案内位置決めするべく、該端子接続板の周縁に沿って案内する枠状案内リブを突設せしめ、該枠状案内リブの内部を該端子接続板の嵌着用凹面に形成したことを特徴とする。
【００１２】
更に本発明によれば、該枠状案内リブに部分的に欠除部を設けたことを特徴とする。
【００１３】
更に本発明は、上記の蓄電池において、過電流に対する蓄電池内での溶断及び爆発を防止し、また、電槽化成及び補充電を行うに当たり、結線作業の容易な蓄電池を提供するもので、該端子接続板の中間水平板部に切欠部を設け、その断面積を一部で小さくした易溶部を設けたことを特徴とする。
【００１４】
更に本発明は、上記の蓄電池において、安全性を確保した蓄電池を提供するもので、該囲枠空間の上面を被覆する被覆板を延長して該端子接続板の立上がり耳の上端と垂直外面を被覆する断面Ｌ字状のカバーを設けたことを特徴とし、或いは、該断面Ｌ字状カバーに、その下端から水平に延びて該端子接続板の水平中間板部の上面を被覆する水平板状の延長カバーを設けたことを特徴とし、更には、該筐枠の上面を収容する被覆板より水平に該端子の方向に延びる水平板カバーと、該排気用囲枠の上面を被覆する排気覆板から水平に該端子の方向に延びる水平板カバーとを設け、これらカバーの間にトルクレンチなどでナットを締めるスペース空間を残すようにしたことを特徴とする。
【００１５】
【発明の実施の形態】
本発明の実施の１例を添付図面の図１乃至図４に基づいて説明する。
図１は、本発明実施の１例の蓄電池の斜面図、図２は、排気覆蓋を除いたその平面図、図３（ａ）は、図２のＸ−Ｘ線裁断面図、図３（ｂ）は、図２のＹ−Ｙ線で一部を裁断した断面図である。
図面で１は、内部を仕切壁２により複数個のセル室３に区劃された合成樹脂製のモノブロック電槽、４は各セル室３内に収容された極板群、５は該極板群４の１側において上方に突出した一列に並ぶ一方の極性の例えば正極板Ｐの耳ｐを接続した正極ストラップ、６はその他側において上方に突出した一列に並ぶ他方の極性の例えば負極板Ｎの耳ｎを接続した負極ストラップ、Ｓは正極板Ｐと負極板Ｎとの間に介在したセパレータ、図３は、一端のセル室３を示し、その負極ストラップ６は、これら立上がるタブ６ａを仕切壁２の１側面に当て、その隣接する中間のセル室内の正極ストラップから立上がるタブを該仕切壁２の他側面に当て、該仕切壁２に設けた貫通孔７を介して両タブを抵抗溶接によりセル間接続したものである。同様にして、夫々のセル室３，３，…の極板群４，４，…を仕切壁を介して直列にセル間接続したものである。
以上の構成は、従来公知の蓄電池と異ならない。
【００１６】
本発明によれば、蓄電池の電槽１内の両端のセル室３，３内の夫々の正極又は負極ストラップに、従来の円柱状の端子用極柱を植設することに代え、板状の端子用極柱８を用いその下端を夫々のストラップに溶接して植設すると共に、その各板状の端子用極柱８の上端板部８ａを、該電槽１の周側壁１ａと各仕切壁２の上端にその対応する周側壁９ｂと仕切壁９ｃを介して接着剤又は熱溶着で当接結着して施された肉薄の合成樹脂成形の電槽蓋９の蓋板９ａに、前記の直立して上方に延びる板状端子用極柱８の上方に位置してこれを導入収容するべく大きく開口し且つその開口面１０ａの上方に、該板状端子用極柱８の上端板部８ａを収容する空間１０を形成するよう該蓋板９ａの上面より上方に突出する方形囲枠１１を突設し、図示の例では、該蓋板９ａと一体成形により突設し、その囲枠１１の内部空間１０内に収容した板状端子用極柱８の上端板部８ａを該囲枠１１の４つの枠壁のうち、図示の例では、内側に位置する枠壁１１ａ（以下これを「内側枠壁」と称する）に設けた貫通孔１２の内側に配置する一方、該蓋板９ａの上面に、その幅方向に横設した端子接続板１３の一端の直立耳部１３ａを、前記の内側枠壁１１ａの外面に沿わせ該貫通孔１２の外側に配置し、該貫通孔１２を介して対面する該上端板部８ａと該直立耳部１３ａとを抵抗溶接用ガンにより加圧し、該貫通孔１２の外周において該内側枠壁部１１ａの内外壁面に気液密に強固に圧着すると共に抵抗溶接により両者を接続し、該端子接続板１３の他端部１３ｂにその蓋板１ａの上面にその幅方向の中央に直立せしめた柱状端子１４に接続し、更に、該囲枠空間１０の上面に被覆板１５を接着剤又は熱溶着により気液密に施して本発明の蓄電池を構成した。
【００１７】
図３には、蓄電池の一端のセル室３内の正極ストラップ５に上記の本発明の板状端子用極柱８の植設と該端子接続板１３との該方形囲枠１１の貫通孔１２を介しての抵抗溶接による接続状態及び該端子接続板１３と該板柱端子１４とを接続して該柱状端子１４を正極端子ＰＴとした構成を明示したが、負極端子ＮＴも同様に蓄電池電槽１内の他端のセル室３内の負極ストラップ６に板状端子用極柱を植設し、その上端板部において、上記と同様にして該端子接続板を抵抗溶接により接続し、更に、該端子接続板１３と該柱状端子１４とを接続して、その柱状端子１４を負極端子ＮＴとすることは、図２に示す通りである。
図示の蓄電池は、鉛蓄電池であり、該板状端子用極柱８、該端子接続板８ａは夫々鉛又は鉛合金製が一般であり、また、該柱状端子は、鉛メッキを施された真ちゅう製のボルトなどが用いられる。
【００１８】
上記の本発明の構成によれば、次の効果をもたらす。即ち、端子用極柱を板状８とし、且つその上端板部８ａを蓋板９ａの上面より上方に突出させたので、その突出分だけ、極板群の正，負極板の耳群を接続するストラップ５及び６の高さを上方に上げることができ、蓋板９ａの裏面と該極板群４の上面との間のデッドスペースの高さｈを減少せしめることができ、従って、これに応じて高さの高い、容量の大きい正，負極板を収容でき、容積効率の向上と電池エネルギー密度の増大をもたらす蓄電池が得られる。
一方、該板状端子用極柱８の上端板部８ａと該接続端子板１３の直立耳部１３ａとは、該内側枠壁１１ａの両面に強固に圧着された状態で該貫通孔１２を介し互いに抵抗溶接されるので、該板状端子用極柱８に付着した電解液が該貫通孔１２を介し外部に漏出することが確実に防止され、従来の円柱状の端子用極柱の上端部を蓋板に鋳込んだ鉛ブッシングの場合に生ずる電解液の漏出を解消し、また、バーナーによる溶接作業の煩わしさ、熟練を要するなどの不都合を解消できる。
【００１９】
上記の本発明の構成において、更に、前記のデッドスペースｈを減少せしめるべく、次のように構成することが好ましい。
即ち、図３に明示のように、該電槽１の各仕切壁２の一部を、セル間接続する位置において、該電槽１の周側壁１ａの上端縁より上方に突出する突出壁部２ａに形成し、該突出壁部２ａの両面に、相隣るセル室３，３内の極板群４，４の互いに異極性のストラップ５，６の立上がりタブ５ａ，６ａを当接し、該仕切壁２に設けた貫通孔７を介して抵抗溶接によりセル間接続する。かくして、図１４示の従来の蓄電池のように、電槽の周側壁と同じ高さの仕切壁の下方において、互いに異極性のストラップのタブを当ててセル間接続するに比し、高い位置にストラップ５，６を位置せしめることができると共に、図３示のように、板状端子用極柱８の全長の大半部から成る上端板部８ａとして、該囲枠空間１０内に収容でき、その下端に接続するストラップ５を上方に位置せしめることができるので、電槽蓋９の蓋板９ａと極板群４との間のデッドスペースｈを更に減少でき、且つそれだけ高さの更に高い正，負極板から成る高容量の極板群４を収容でき、有利をもたらす。
【００２０】
尚、夫々の仕切壁２に１側又は他側に交互に設けられる該突出壁部２ａの夫々は、その突出周縁が梯形状とすることが一般に好ましく、該電槽蓋９の該蓋板９ａ裏面から下垂する夫々の仕切壁９ｂの下縁を、該突出壁部２ａを嵌合当接するに適した梯形状凹欠部９ｃに形成し、該電槽１に該電槽蓋９を施すとき、該梯形状凹欠部９ｃを該梯形状突出壁部２ａに嵌合当接結着せしめて、上記のデッドスペースｈの減少した密閉蓄電池を構成することができる。
【００２１】
尚、上記の該密閉蓄電池では、該電槽蓋９の上面に排気装置１６を具備するものに構成した。即ち、図２及び図３に明示のように、電槽蓋９の蓋板９ａには、前記の囲枠１１を設けた側とは反対側に位置して電槽１内の夫々のセル室３，３，…に対応する位置に夫々の排気筒１６，１６…を配設し、その蓋板９ａの上面に、これら排気筒１６，１６，…を囲繞して共通の排気用囲枠１７を突設し、その排気用囲枠１７により囲まれる排気用空間１８の上面を被覆して、排気覆板１９を該排気用囲枠１７の上端縁に、接着剤又は溶着剤を介して当接結着せしめ、該排気筒１６，１６，…から排出されるガスは、該排気用囲枠１７の１側枠壁に設けた共通の排気孔１７ａから外部に排出できるようにした。尚、各排気筒１６には、ゴム弾性帽状弁などの安全装置２０を装着せしめる。又、該排気用囲枠１７内には、該排気孔１７ａに導く左右一対の案内溝枠１７ｂ，１７ｂを配設し、その間の一括排気用通路１７ｃ内に、ガスフィルター１７ｃを介在させることが好ましい。
【００２２】
図２から明らかなように、該蓋板９ａには、他端のセル室３の上方には前記と同様に本発明の囲枠空間１０、囲枠１１が一体成形により突設形成され、該囲枠空間１０内に他方の極性、図面では負極ストラップ６から上方に延びる板状端子用極柱８の上端板部８ａが収容され、該上端板部８ａを内側枠壁１１ａに設けた貫通孔１２に対面させる一方、該蓋板９ａ上面に横設した端子接続板１３の直立耳部１３ａを該内側枠壁１１ａの外側から該貫通孔１２に対面させ、溶接ガンにより該上端板部８ａと該直立耳部１３ａを該内側枠壁１１ａの内外壁面に気密に圧着せしめると同時に、該貫通孔１２を介して互いに抵抗溶接され、その他端部１３ｂは、蓋板９ａの幅方向の中央に直立させた柱状端子１４に接続し、これを負極端子ＮＴとした。
【００２３】
前記の各囲枠１１と該共通の排気用囲枠１７とは夫々独立して構成し、該囲枠１１の上面には該被覆板１５を該排気用囲枠１７には該排気覆板１９を夫々各別に施しても良いが、図２示のように、左右の該囲枠１１，１１の各１側壁を該共通の排気用囲枠１７の一部と共通させて連なる全体としてエ字状の囲枠２１に構成し、且つ各囲枠１１の上面の被覆板１５と該共通の排気用囲枠１７の上面の排気覆板１９との両方の被覆を兼ねる１つの共通のエ字状の被覆板２２でこれら囲枠１１，１１と該共通の排気用囲枠１７との上面を被覆するようにすれば、一挙に被覆ができ、構成が簡単となる。この場合、これら囲枠１１，１１及び共通の排気用囲枠１７の上縁と該被覆板２２の周縁とは、接着剤又は熱溶着で結着することが一般である。
【００２４】
負極及び正極の柱状端子１４は、円柱、角柱であれば足り、これを該蓋板９ａの上面に固定するには、その下端を接着剤による固着、締め付けによる結着、蓋板９ａの成形時に一体に鋳込むなどの任意の手段が考えられる。
図示の例では、柱状端子１４としては、ボルトを用いた。ボルトとしては、頭部が三角乃至八角から成るものから選択使用するが、図示の例では、六角ボルトを用いた。これを該蓋板９ａ上面に植設するには、図４に明示のように、該蓋板９ａの上面に、六角ボルト１４の頭部１４ａと同じ六角形状をもつ嵌着用凹部２３を形成し、これに該ボルト１４の頭部１４ａを嵌着する簡単な作業で足りる。次に、該蓋板９ａの上面に突出するボルト柱状部１４ｂに、該端子接続板１３の他端部１３ｂを、これに設けた貫通孔１３ｃで嵌めて該ボルト１４の頭部１４ａ上面に載置し、該ボルト柱状部１４ｂにナット２４を螺合し、平座金２５、バネ座金２６を介してその上方から締め付けることにより、該ボルト端子１４は該蓋板９ａ上面に固定されると同時に該端子接続板１３との強固な接続が得られる。而して、このナット２４により締め付ける際の捻回力が該ボルト１４に伝えられても、該角型頭部１４ａは該角型凹部２３と回転方向において係合されるので、その回動は防止されるので、規定のトルクで所定の締め付けを達成できる。
【００２５】
尚、該蓋板９ａの厚さは、２〜５ｍｍの肉薄とし、該角型凹部２３は、図３示のように、成形時の屈曲壁によりその上面に形成するようにした。これにより、該蓋板９ａは、従来の鉛ブッシングを鋳込む場合に必要な肉厚を必要とせず、肉薄、軽量な電槽蓋９とすることができる。
【００２６】
該端子接続板１３は、該蓋板９ａの上面の所定位置に的確、迅速に所定位置に設置することができることが望ましい。そのために、該端子接続板１３の設置の際にガイドとして作用する該端子接続板１３の周縁形状と同じ形状をもつ位置決め用枠状案内リブ２７を図４に明示のように、該蓋板９ａの上面に突設し、該枠状案内リブ２７の内部に該端子接続板１３が丁度嵌まる嵌合凹部２８を形成せしめた。該枠状案内リブ２７は、該蓋板９ａの成形時に一体成形により形成することが一般であり、その高さは、図示の例では、該端子接続板１３の厚さより低く形成したが、それと同じ高さ、或いはそれよりいくらか高くても良い。図示の例では、該端子接続板１３は、鉛、鉛合金の成形板から成り、端子と接続される端子部１３ｂを円盤状に膨出せしめた鍵穴状板とし、その板状端子用極柱８と接続される一端は、直角に上方に折り曲げた端部１３ａとしたものであるから、該枠状案内リブ２７の形状もこれに従って、該円盤状端部１３ｂを囲繞する円形状リブ部２７ａと、該端子接続板１３の中間の水平板部１３ｄの両側縁を案内する該円形状リブ部２７ａより延びる平行する２条の案内リブ部２７ｂ，２７ｂとから成り、且つ該２条の案内リブ部２７ｂ，２７ｂは、該囲枠１１の内側枠壁１１ａに対し直交し、且つ該貫通孔１２を中心とし、これから等距離に配置された位置に配設した。
かくして、該枠状案内リブ２７内に該端子接続板１３を嵌め込む時は、自動的に、該囲枠１１の内側枠壁１１ａに対し直交し且つ所定の正しい位置に設置でき、直ちに次の抵抗溶接作業と柱状端子１４との接続作業を正確に行うことができる。この場合、該枠状案内リブ２７は、上記の作用に加えて、該端子接続板１３を外界からの機械的衝撃などから保護すると共に、強度の補強に役立つ。
【００２７】
該枠状案内リブ２７は、必ずしも該端子接続板１３の他端部１３ｂと中間水平板部１３ｄの全周縁に亘る必要はなく、図５及び図６に示すように、例えば、中間水平板部１３ｄの両側縁の一部を案内する短い２条の平行リブ部２７ｂ，２７ｂとすることもできる。尚、図６に示すように、該端子接続板１３は、その中間水平板部１３の幅は直立耳部１３ａの下端において細幅となって、その細幅部との間に段３０，３０が形成されているが、前記２条の案内リブ部の先端を該段に沿って内側に屈曲したＬ字状リブに形成し、該端子接続板１３の位置決め、保護、補強を強化した。
【００２８】
図７は、図５示の場合と同様に、該枠状案内リブ２７の２条の平行リブ部２７ｂ，２７ｂに欠除部３１，３１を有する部分的な案内リブに形成したが、該端子接続板１３の該中間水平板部１３ｄにおいて、その両側縁に前記の欠除部３１，３１に対応する個所において切欠部３２，３２を設けて、特に、その部分の断面積を小さくした易断部を形成し、蓄電池に過電流が流れた場合に、その易断部３４で直ちに溶断し、蓄電池内に過電流が流れることを未然に防止するようにしたものである。
【００２９】
図８は、ボルト型その他の柱状端子１４を、該電槽蓋９の成形時にその角型頭部などの下端部１４ａを該蓋板９ａに鋳込んで一体に設けたものである。この場合は、上記のようなナット２６によるボルト１４の固定作業は不要となる。図示のように、該頭部１４ａは該蓋板９ａに埋設される。従って、該蓋板９ａの上面から上方に突出したボルト１４の柱状部１４ｂに該端子接続板１３の他端部１３ｂをその孔１３ｃを介して嵌装し、その上からナット２４を施すことにより、該端子接続板１３と端子１４との強固な電気的接続が得られる。
上記の構成は、負極及び正極の両柱状端子１４について同様に構成した。この場合、上記の易断部の形成は少なくともいずれか一方の中間平板部１３ｄに形成すれば足りる。
【００３０】
このように構成した本発明の蓄電池の多数個を電槽化成及び補充電を行う際には、その相隣る蓄電池の正，負極端子ＰＴ，ＮＴを接続バーや接続ケーブルの圧着端子等で接続するには、結線作用が比較的容易なクリップなどにより該端子１４の柱状部１４ｂに取り付けても良い。しかし、この場合は、クリップを該柱状部１４ｂに噛ませると、その螺条部のネジ山が破損する恐れがあり、破損後は、ナット２６が螺合できなくなることが考えられる。従って、該端子接続板１３にクリップを取り付けるようにすることが考えられる。この場合は、該端子接続板１３の図５、図６示又は図７に示すような前記の２条の案内リブ２７ｂ，２７ｂの欠除部３１，３１において、外部に露出した該中間板部１３ｄの両側部にクリップを噛み付けることが好ましく、特に、その露出部に、前記した切欠部３２，３２を設けた場合には、該切欠部３２，３２でのクリップの噛み合わせ状態が安定し、良好な接続が得られ、電槽化成及び補充電工程が良好且つ高能率に行うことができると共に、前記のボルト１４の柱状部１４ｂのネジ山を欠くことなく良好に維持でき、良好な品質が保証される。
【００３１】
また、上記の本発明の蓄電池の安全性を向上するために、該蓄電池の該電槽蓋の外面に露出した該端子接続板１３の金属露出面をカバーすることが望ましい。
図９は、該端子接続板１３の直立耳部１３ａをカバーした場合を示し、該囲枠１１の上面を被覆する被覆板１５又はエ字上被覆板２２から一体成形により突出せしめ、該直立耳部１３ａの上端の上方を被覆するよう前方へ庇状に突出すると共に下向きに下垂し該直立耳部１３ａの立上がる垂直面の前面を被覆する断面Ｌ字状の合成樹脂製カバー３３で被覆したものである。
図１０は、図９示のＬ字状カバー３３の下端より更に水平に延びて該端子接続板１３の中間水平板部１３ｄの上面を被覆する水平板状の延長カバー３４を延設したものである。
図１１は、該囲枠の上面を被覆する被覆板１５又は２２から水平に該端子１４の方向に延びる一体成形の合成樹脂製水平板カバー３５によりその下方の該端子接続板１３の直立耳部１３ａと中間水平板部１３ｄの外面を上方から被覆する一方、該筐枠１１と対向する該共通の排気用囲枠１７の上面を被覆する排気覆板蓋１９又はエ字状被覆板２２から水平に該端子１４の方向に該端子接続板１３の他端部１３ｂの手前まで延びる一体成形の合成樹脂製水平板カバー３６により、その下方の蓋板９ａの上面をカバーし、これらの該カバー３５と３６間には、トルクレンチ等でナット２４を締め付けるために必要なスペース空間３７を残してカバーした。
【００３２】
これらのカバーは、正極端子ＰＴ側、負極端子ＮＴ側の両方に設けられることは言うまでもない。
【００３３】
図１２及び図１３は、更に、電槽蓋の裏面と該電槽内の極板群との間のデッドスペースｈを更に小さくし、容積効率を増大すると共に電池エネルギー密度を更に向上せしめ、更にコンパクトな排気装置を具備した蓄電池の実施例を示す。即ち、この実施例では、上記の板状端子用極柱８は比較的短く形成し、その略全長を該蓋板９ａに設けた該囲枠１１内の空間１０に収容するばかりでなく、安全装置２０を装備した排気筒１６を収容した。該板状端子用極柱８は、先の実施例と同様に該囲枠１１の内側枠壁１１ａに設けた貫通孔１２を介してその外側の該蓋板９ａの上面に設置した端子接続板１３の直立耳部１３ａと抵抗溶接により接続する一方、その他端部１３ｂを、該蓋板９ａに直立させて設けた柱状端子１４にその孔１３ｃを介して嵌合し、該柱状部１４ｂに螺合したナット２４によりその上から締め付けて該ボルト１４と該端子接続板１３とを固定接続せしめた。一方、該電槽１の各仕切壁の１側又は他側に交互に設けた突出壁部２ａ，２ａを該電槽１に施された電槽蓋９の蓋板９ａの両側において、蓋板９ａ面から上方に突設した長矩形囲枠３８，３９内に収容し、該囲枠３８，３９内で該電槽１より上方に位置せしめた互いに異極性のストラップ５，６を各該突出壁部２ａに設けた貫通孔７を介してセル間接続を行うようにした。かゝる構成により、各セル室内の極板群４と蓋板９ａの裏面との間のスペースｈを殆どなくなり、容積効率の著しく増大したコンパクトな蓄電池をもたらし、また、更に高さの高い正，負極板から成る極板群を収容でき、電池容量の増大した蓄電池をもたらす。
【００３４】
更に詳細に図１２〜図１３に示す本発明の構成を以下に説明する。
即ち、図１２は、その蓄電池の図３示と同様の横断面図、図１３は、その分解斜面図である。
この実施例によれば、電槽１内の各セル室３内に収容した極板群４は、該電槽１の該周側壁１ａ上端近傍まで達する高さを有する正極板Ｐと負極板Ｎとこれら極板に介在したセパレータＳから成り、その複数枚の正極板Ｐの耳ｐ列を接続する正極ストラップ５及び複数枚の負極板Ｎの耳ｎ列を夫々接続する負極ストラップ６は、該電槽１の周側壁１ａより上方に位置せしめ、夫々の仕切壁２には、その両側に突出壁部２ａ，２ａを突設し、更に、これら突出壁部のうち、１側又は他側に交互に位置する突出壁部２ａに、中心に貫通孔７を穿設したセル間接続用の突出壁部２ａを突設し、各該突出壁部２ａにおいて、その各相隣るセル室３内の極板群４，４の一線に並ぶ互いに異極性のストラップ５，６のタブ５ａ，６ａを該貫通孔７を介して溶接ガンにより抵抗溶接し、その両端のセル室３，３内の端子用ストラップ６，５には、比較的短い板状端子用極柱８，８を植設し、その両端セル室３，３内の端子用ストラップ６，５とその板状端子用極柱８，８を、電槽蓋９の蓋板９ａの１側に設けた囲枠１１，１１の内部空間１０，１０内に収容し、更にその各囲枠１１，１１内には、安全装置２０，２０、図示の例では帽状ゴム製の安全弁２０，２０を装着した排気筒１６，１６を夫々下記のように収容するようにした。
即ち、該電槽蓋９には、図１２及び図１３に示すように、その蓋板９ａにその１側に、正，負極の板状端子用極柱８，８を収容した該囲枠１１，１１を含めて該電槽１内の全セル室３，３，…内の極板群４，４，…の１側において並ぶ互いに異極性のストラップ５，６に対応する位置に該蓋板９ａを貫通して設けた長矩形の開口部４０の周縁に、前記の１側の突出壁部２ａ，２ａ，…を収容する該蓋板９ａに一体成形により垂直上方に突出する該蓋板９ａと一体成形により長矩形囲枠３９を突設する一方、その蓋板９ａの他側に、該電槽内の全セル室３，３，…内の極板群４，４，…の他側において並ぶ異極性のストラップ５，６に対応する位置に開口して設けた長矩形の開口部４１の周縁に、前記の他側の突出壁部２ａ，２ａ，…を収容する該蓋板９ａに一体成形により垂直上方に突出する該蓋板９ａと一体成形により長矩形囲枠３８を該蓋板９ａ上面に突設する。これとは別に、図１３（ｂ）に示す該蓋板９ａの１側の該長矩形囲枠３９の開口部４０を被覆する蓋板部９ｂとその他側の長矩囲枠３８の開口部４１を被覆する蓋板部９ｃを用意する。即ち、該蓋板部９ｂは、その上面にリブ上の共通の排気用囲枠１７′を突設し、その囲枠１７′内に、夫々安全装置２０，２０を具備した排気筒１６，１６，…を配設すると共に、該囲枠１７′内を共通の排気用空間１８′に形成する一方、該蓋板部９ｂの下面に該電槽の夫々の仕切壁２，２，…に設けた前記の突出壁部２ａ，２ａ，…の上端部を収容し当接する下向きの凹溝４２，４２，…を形成したもので、この蓋板部９ｂを、前記の該囲枠３９と各突出壁部２ａの上端に当接させ、接着剤又は熱溶着により結着して施し、該開口部４０を被覆した。その他側の囲枠３８の上面開口部４１を被覆するための前記の蓋板部９ｃは、下面に各突出壁部２ａを収容当接する下向きの凹溝４３を形成され、その上面にリブ状囲枠４４を設け、厚さを前記の該蓋板部９ｂと同じにした。この蓋板部９ｃを、該囲枠３８と各突出壁部２ａの上端に当接し、接着剤又は熱溶着により結着して施し、該開口部４１を被覆した。尚、前記の蓋板部９ｂは、長矩形板の１例の中央より１側に延びる筐形延長部１７′ａを延設したＴ字状の蓋板部９ｂに形成され、その上面にＴ字状のリブ状の共通排気用囲枠１７′を形成し、その筐形延長部１７′ａの上面の囲枠１７′内にガスフィルター４５を設けた。４６は、筐形延長部１７′ａの基部の下面に設けた囲枠３９に嵌合用の凹溝である。又、該囲枠３９の１側縁には、該共通排気用囲枠１７′の該筐形延長部１７′ａの基部が跨ぎ交叉する個所には、該基部を嵌合する切欠凹部４７を設けた。かくして、該共通排気用囲枠１７′の該筐形延長部１７′ａの基部を該切欠凹部４７に嵌め込んだとき、該Ｔ字状の共通排気用囲枠１７′の高さ位置が該囲枠３９の上端面と同じ高さ位置、即ち、同じつら位置になるようにした。このように、夫々の開口部４０，４１に夫々の蓋板部９ｂ，９ｃを施した後、その上面に、図１３（ｃ）に示すエ字上の排気覆板２２′を接着剤又は熱溶着により結着して施す。その排気覆板２２′には、前記のガスフィルター４５の上方に対応する位置に共通１個の排気孔１７′ａが設けられている。かくして、該蓄電池の充電時などで夫々のセル室３，３，…内に発生するガスは、夫々の排気筒１６，１６，…からその上面のリブ状の共通の排気用囲枠１７′内に排出し、該ガスフィルター４５を介して共通一個の排気孔１７ａ′より外部に排気される安定良好な密閉蓄電池として作動する。
【００３５】
【発明の効果】
請求項１に係る発明によれば、従来のような正，負の柱状端子用極柱に付着した電解液が滲み上がり、その上端部で嵌合する電槽蓋の蓋板に鋳込んだ鉛ブッシングと蓋板との境界を通り外部に漏出する不都合が解消され、また、鉛ブッシングを鋳込んだ電槽蓋に比し、肉薄の電槽蓋ですみ、軽量な蓄電池が得られる。
請求項２に係る発明によれば、電槽蓋の蓋板の裏面と電槽内の極板群との間のスペースを小さくすることができ、容積効率の向上し背の低い蓄電池が得られる。
請求項３に係る発明によれば、上記請求項１及び２において共通の排気装置を具備した上記の蓄電池が得られる。
請求項４に係る発明によれば、更に、電槽蓋の蓋板の裏面と該極板群との間のスペースを殆どなくすことができると共に、更に高さの高い正，負極板を用いた極板群を具備し、更に高容量の蓄電池が得られる。
請求項５に係る発明によれば、更に容積効率と電池エネルギー密度の向上した蓄電池が得られる。
請求項６に係る発明によれば、請求項５に係る発明の効果を有し且つ更にコンパクトな排気装置を備えた蓄電池が得られる。
請求項７に係る発明によれば、請求項６に係る発明の好ましいコンパクトな排気装置を備えた蓄電池が得られる。
請求項８に係る発明によれば、該端子接続板と該蓋板に植設した端子との接続並びに該端子の設置と固定を容易に行うことができる。
請求項９に係る発明によれば、該端子を、該電槽蓋の成形時に該蓋板に植設することを同時に行うことができる。
請求項１０に係る発明によれば、該端子接続板の該蓋板上面の所定位置への設置作業を確実に行うことができると共に、該板状端子用極柱との対面と接続作業を正確に行うことができる。
請求項１１に係る発明によれば、該枠状案内リブの該欠陥部を介してクリップなどの外部端子を接続でき、ボルトの柱状部のねじ山をクリップによる破損を防止し、端子にナットを良好に締め付けることができる。
請求項１２に係る発明によれば、端子接続板に過電流が流れた時容易に溶断されて、蓄電池の内部に過電流が流れることによる爆発を防止できる。
請求項１１〜１４に係る発明によれば、該端子接続板の外界との接触から保護し得られると共に、該トルクレンチなどによるナットの締め付けを良好に行うことができる。
【図面の簡単な説明】
【図１】本発明の実施の１例の蓄電池の斜視図。
【図２】排気覆板を除いた図１示の蓄電池の平面図。
【図３】（ａ）乃至（ｂ）は図２の裁断面図を示し、（ａ）はＸ−Ｘ線裁断面図、（ｂ）はＹ−Ｙ線裁断面図。
【図４】該蓄電池の要部の分解斜面図。
【図５】該要部の変形例の平面図。
【図６】該要部の更に変形例の平面図。
【図７】該要部の更に変形例の平面図。
【図８】該要部の変形例の縦断面図。
【図９】該要部の更に変形例の縦断面図。
【図１０】該要部の更に変形例の縦断面図。
【図１１】該要部の更に変形例の縦斜面図。
【図１２】該本発明の他の実施例の蓄電池の横断面図。
【図１３】（ａ）乃至（ｃ）は図１０示の蓄電池の分解図を示し、（ａ）は蓋板部を除去した蓄電池の平面図、（ｂ）は蓋板部の斜視図、（ｃ）は排気覆蓋の斜面図。
【図１４】従来の蓄電池の一部を裁除した断面図。
【符号の説明】
１電槽１ａ電槽の周側壁２仕切壁
２ａ突出壁部３セル室４極板群
５正極ストラップ５ａタブ６負極ストラップ
６ａタブＮ負極板ｎ負極耳
Ｐ正極板ｐ正極耳７貫通孔
８板状端子用極柱８ａ板状端子用極柱の上端板部
９電槽蓋９ａ蓋板９ｂ蓋板部
９ｃ蓋板部１０囲枠空間
１１板状端子用極柱収容囲枠１１ａ枠壁、内側枠壁
１２貫通孔１３端子接続板１３ａ直立耳部
１３ｂ他端部１３ｃ孔１３ｄ中間水平板部
１４柱状端子１４ａ柱状端子の頭部１４ｂ柱状部
１５被覆板１６排気筒１７排気用囲枠
１７′ 排気用囲枠１７ａ共通の排気孔１７ａ′ 共通の排気孔
１８排気用空間１８′ 排気用空間１９排気覆蓋
２０安全装置ＰＴ正極端子ＮＴ負極端子
２２エ字状被覆板２２′ エ字状被覆板２３角型凹部
２４ナット２７枠状案内リブ３０嵌合凹面
３１欠除部３２切欠部３３〜３５カバー
３８囲枠３９囲枠ｈスペース高さ
４０開口部４１開口部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a storage battery used as a power source for an electric device such as an electric vehicle or leisure.
[0002]
[Prior art]
As a conventional storage battery, as shown in FIG. 14, from a strap D to which a cathode plate or an anode plate of an electrode plate group C housed in a cell chamber B in a monoblock synthetic resin molded battery case A is connected. A cylindrical terminal pole E is made upright, and its upper end e is in a through hole of a lead bushing G cast in a cover plate f of a synthetic resin molded battery cover F applied to the battery case A. It is known that a storage battery terminal is constructed by melting a boundary portion by applying a burner to the top surface of the fitted upper end e and the top surface of the lead bushing G on the outer surface. Yes.
[0003]
[Problems to be solved by the invention]
But you know, Electrolyte There is a risk of entering the boundary between the lid plate f and the lead bushing G and spreading out and leaking outside. As a measure to prevent the electrolyte from spreading, the outer periphery of the lead bushing G is provided with 段 g in a plurality of stages, but in order to exert a sufficient prevention effect, the number of ridges is increased, In addition, since it is necessary to increase the distance, the vertical length and weight of the lead bushing increase, and accordingly, the thickness of the lid plate into which the lead bushing is cast increases, and the strap D of the electrode plate group C increases. The height h of the space between the cover plate f and the back surface of the cover plate f above it is increased, resulting in a decrease in the volumetric efficiency of the battery. Therefore, development of a storage battery that solves such conventional disadvantages, prevents leakage of the electrolyte solution to the outside of the battery lid through the terminal pole, increases volumetric efficiency, and increases energy density. Is desired.
[0004]
[Means for Solving the Problems]
The present invention solves the above-mentioned conventional problems and provides a storage battery that brings about the above-mentioned demands, and is a terminal to which a positive electrode ear row and a negative electrode ear row of an electrode plate group accommodated in a cell chamber in a battery case are connected. A plate-like terminal pole is planted on the strap, and at least the upper end plate portion of the plate-like terminal pole is placed on one side of the lid of the battery lid applied to the battery case. The terminal connection plate that is accommodated in the inner space of the surrounding frame protruding from the upper surface and faces the through hole provided in the frame wall of the surrounding frame, The ear part upright from one end faces the through hole of the inner frame wall of the surrounding frame, and the upper end plate part of the terminal pole column and the ear part of the terminal connection plate face each other through the through hole Are connected by resistance welding, and the other end of the terminal connection plate is connected to a positive electrode terminal or a negative electrode terminal standing upright on the upper surface of the lid plate, Characterized in that subjected to coating plate.
[0005]
Furthermore, the present invention provides a storage battery that further improves volumetric efficiency and battery energy density. At a position where a part of each partition wall of the battery case is connected between cells, the upper edge of the peripheral wall of the battery case is provided. It is formed on the wall part that protrudes further upward, and the rising tabs of the straps of different polarities in the electrode plate group of the adjacent cell chamber are brought into contact with both surfaces of the protruding wall part, and through holes provided in the partition wall are formed. And connecting between cells by resistance welding.
[0006]
Furthermore, the present invention provides a storage battery provided with a safe exhaust device in the above-described storage battery, wherein a cylindrical exhaust hole is provided at a position corresponding to each cell chamber of the battery case on the lid plate of the battery case cover. A safety valve is attached to the exhaust cylinder, and a common exhaust enclosure surrounding the exhaust cylinder is provided on the upper surface of the cover plate, and an exhaust cover is provided on the upper surface of the enclosure, and the exhaust cover is provided. It is formed in a common covering plate including the covering plate that extends a part of the covering frame and covers the upper surface of the surrounding frame space.
[0007]
Furthermore, the present invention provides a storage battery that further improves volumetric efficiency and battery energy density, and connects positive and negative electrode ear rows protruding on both sides above the electrode plate group accommodated in each cell chamber of the battery case. The positive electrode strap and the negative electrode strap are positioned above the battery case, each partition wall is provided with a protruding wall portion protruding above the peripheral side wall of the battery case, and adjacent to each other through a through hole provided in the protruding wall portion. The opposing positive electrode strap tab and negative electrode strap tab are connected to each other between the cells, and the plate terminal poles implanted in the positive and negative straps of the cell chambers at both ends are applied to the battery case. Each of the protruding wall portions having the inter-cell connecting portions is accommodated in the surrounding frames protruding on both sides of the lid plate while being accommodated in the surrounding frames protruding on the lid plate of the tank lid. .
[0008]
Furthermore, the present invention provides a storage battery provided with a more compact exhaust device using the housing frame of the electrode pole for the plate-like pole terminal in the above-mentioned storage battery. An exhaust pipe equipped with the safety valve is accommodated in the enclosure containing at least the upper end plate.
[0009]
Furthermore, the present invention provides a preferable embodiment of a storage battery provided with the above-described more compact exhaust device, wherein an exhaust cylinder equipped with a safety valve is disposed on one side of a long rectangular frame on the cover plate, and an upper surface is provided. A long rectangular lid plate is provided with a common exhaust rib-shaped enclosure, and a long rectangular lid plate is provided on the other long rectangular enclosure, and an exhaust cover plate is provided on the upper surface of these lid plates. And
[0010]
Furthermore, the present invention provides a storage battery in which the terminal is easily provided in the middle of the width direction on the upper surface of the storage battery without increasing the thickness of the cover plate of the battery case lid. Each of the anode terminals is composed of a bolt having a square head, and the head of the bolt is fitted into a rectangular concave surface of the same shape formed on the upper surface of the lid plate of the battery case lid, and the terminal connection plate The other end is fitted to the columnar portion of the bolt with a through hole provided in the other end, and the other end is tightened to the head of the bolt with a nut applied to the columnar portion of the bolt. .
[0011]
Furthermore, the present invention provides a storage battery that facilitates welding work with the terminal connection plate and provides reinforcement of the terminal connection plate in the above storage battery. In order to guide and position the installation surface, a frame-shaped guide rib that guides along the periphery of the terminal connection plate is protruded, and the inside of the frame-shaped guide rib is formed as a concave fitting surface of the terminal connection plate. And
[0012]
Furthermore, according to the present invention, the frame-shaped guide rib is partially provided with a notch.
[0013]
Furthermore, the present invention provides a storage battery that prevents fusing and explosion in the storage battery due to overcurrent in the above-described storage battery, and that can be easily connected in battery case formation and auxiliary charging. A cutout portion is provided in the intermediate horizontal plate portion of the connection plate, and an easily soluble portion whose cross-sectional area is partially reduced is provided.
[0014]
Furthermore, the present invention provides a storage battery that ensures safety in the above-described storage battery, and extends the cover plate that covers the upper surface of the surrounding frame space so that the upper end and the vertical outer surface of the rising edge of the terminal connection plate are A cover having an L-shaped cross section for covering is provided, or cross section The L-shaped cover is provided with a horizontal plate-like extension cover that extends horizontally from the lower end thereof and covers the upper surface of the horizontal intermediate plate portion of the terminal connection plate. A horizontal plate cover extending in the direction of the terminal horizontally from the covering plate to be accommodated, and a horizontal plate cover extending in the direction of the terminal horizontally from the exhaust cover plate covering the upper surface of the exhaust enclosure. It is characterized by leaving a space for tightening the nut with a torque wrench.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 to 4 of the accompanying drawings.
1 is a perspective view of a storage battery according to an embodiment of the present invention, FIG. 2 is a plan view of the storage battery without an exhaust cover, FIG. 3A is a cross-sectional view taken along line XX in FIG. FIG. 3B is a cross-sectional view of a part cut along a line YY in FIG.
In the drawing, 1 is a monoblock battery case made of synthetic resin, the inside of which is divided into a plurality of cell chambers 3 by partition walls 2, 4 is a group of electrode plates accommodated in each cell chamber 3, A positive electrode strap connected to, for example, the ears p of one positive electrode plate P arranged in a row protruding upward on one side of the plate group 4, and a negative electrode plate of the other polarity arranged in a row protruding upward on the other side, for example. N is a negative electrode strap connected to the N ear n, S is a separator interposed between the positive electrode plate P and the negative electrode plate N, FIG. 3 shows the cell chamber 3 at one end, and the negative electrode strap 6 includes these rising tabs 6a. Is applied to one side surface of the partition wall 2, a tab rising from the positive electrode strap in the adjacent intermediate cell chamber is applied to the other side surface of the partition wall 2, and both tabs are inserted through the through holes 7 provided in the partition wall 2. Are connected between cells by resistance welding. Similarly, the electrode plate groups 4, 4,... Of the respective cell chambers 3, 3,... Are connected between the cells in series via the partition walls.
The above configuration is not different from a conventionally known storage battery.
[0016]
According to the present invention, instead of implanting the conventional cylindrical terminal poles in the positive or negative straps in the cell chambers 3 and 3 at both ends in the battery case 1 of the storage battery, The terminal pole 8 is used by welding its lower end to each strap, and the upper end plate portion 8a of each plate-like terminal pole 8 is connected to the peripheral side wall 1a of the battery case 1 and each partition. The cover plate 9a of the battery case lid 9a of the thin synthetic resin molded by being contacted and bonded to the upper end of the wall 2 by the adhesive or heat welding through the corresponding peripheral side wall 9b and the partition wall 9c, The upper end plate portion of the plate-like terminal pole 8 is positioned above the plate-like terminal pole 8 extending upright and has a large opening so as to be introduced and accommodated and above the opening surface 10a. In the example shown in the figure, a rectangular surrounding frame 11 projecting upward from the upper surface of the lid plate 9a is formed so as to form a space 10 for accommodating 8a. The upper end plate portion 8a of the plate-shaped terminal pole 8 that is projected by integral molding with the lid plate 9a and accommodated in the inner space 10 of the surrounding frame 11 is, among the four frame walls of the surrounding frame 11, In the example shown in the figure, it is disposed inside a through hole 12 provided in a frame wall 11a (hereinafter referred to as an “inner frame wall”) located on the inner side, and on the upper surface of the lid plate 9a, The upper end plate portion 8a which is arranged on the outside of the through hole 12 along the outer surface of the inner frame wall 11a and faces through the through hole 12 is arranged with the upright ear portion 13a at one end of the terminal connection plate 13 provided. And the upright ear portion 13a are pressurized by a resistance welding gun, firmly and gas-liquid tightly bonded to the inner and outer wall surfaces of the inner frame wall portion 11a at the outer periphery of the through-hole 12, and both are connected by resistance welding. The other end 13b of the terminal connection plate 13 is placed on the upper surface of the lid plate 1a in the center in the width direction. Connected to the post terminal 14 allowed standing, further, to constitute a storage battery of the present invention is subjected to the gas-liquid-tight by an adhesive or heat welding the cover plate 15 on the upper surface of the surrounding frame space 10.
[0017]
In FIG. 3, the positive electrode strap 5 in the cell chamber 3 at one end of the storage battery is implanted with the above-described plate terminal pole 8 of the present invention and the through hole 12 of the rectangular enclosure 11 with the terminal connection plate 13. The connection state by resistance welding through the terminal and the configuration in which the terminal terminal plate 13 and the plate column terminal 14 are connected to form the column terminal 14 as the positive electrode terminal PT are clearly shown. A plate terminal pole is implanted in the negative electrode strap 6 in the cell chamber 3 at the other end in the tank 1, and the terminal connection plate is connected by resistance welding in the same manner as described above at the upper end plate portion. As shown in FIG. 2, the terminal connection plate 13 and the columnar terminal 14 are connected to form the columnar terminal 14 as the negative terminal NT.
The illustrated storage battery is a lead storage battery, the plate terminal pole 8 and the terminal connection plate 8a are generally made of lead or a lead alloy, and the column terminals are brass plated with lead. Made bolts are used.
[0018]
According to the configuration of the present invention described above, the following effects are brought about. That is, since the terminal pole is made into a plate-like shape 8 and the upper end plate portion 8a protrudes upward from the upper surface of the lid plate 9a, the positive and negative electrode tabs of the electrode plate group are connected by the amount of the protrusion. The heights of the straps 5 and 6 can be increased upward, and the height h of the dead space between the back surface of the lid plate 9a and the upper surface of the electrode plate group 4 can be reduced. Accordingly, a positive and negative electrode plate having a high height and a large capacity can be accommodated, and a storage battery that improves volumetric efficiency and increases battery energy density is obtained.
On the other hand, the upper end plate portion 8a of the plate terminal pole 8 and the upright ear portion 13a of the connection terminal plate 13 are firmly attached to both surfaces of the inner frame wall 11a via the through holes 12. Since they are resistance-welded to each other, it is possible to reliably prevent the electrolyte attached to the plate-shaped terminal pole 8 from leaking outside through the through-holes 12, and the upper end of the conventional cylindrical terminal pole This eliminates the leakage of the electrolyte that occurs in the case of a lead bushing casted on the lid plate, and also eliminates the inconvenience of the welding work and skill required by the burner.
[0019]
In the above-described configuration of the present invention, the following configuration is preferable in order to further reduce the dead space h.
That is, as clearly shown in FIG. 3, a protruding wall portion that protrudes upward from the upper edge of the peripheral side wall 1a of the battery case 1 at a position where a part of each partition wall 2 of the battery case 1 is connected between cells. 2a, the rising tabs 5a and 6a of the straps 5 and 6 of opposite polarities of the electrode plate groups 4 and 4 in the adjacent cell chambers 3 and 3 are brought into contact with both surfaces of the protruding wall 2a, The cells are connected by resistance welding through a through hole 7 provided in the partition wall 2. Thus, as in the conventional storage battery shown in FIG. 14, below the partition wall having the same height as the peripheral side wall of the battery case, the tabs of the straps of different polarities are applied to each other and the cells are connected at a higher position. The straps 5 and 6 can be positioned, and as shown in FIG. 3, the upper end plate portion 8a consisting of most of the entire length of the plate terminal pole 8 can be accommodated in the surrounding frame space 10, Since the strap 5 connected to the lower end can be positioned upward, the dead space h between the lid plate 9a of the battery case lid 9 and the electrode plate group 4 can be further reduced, and the height is increased accordingly. The high capacity electrode plate group 4 made of the negative electrode plate can be accommodated, which is advantageous.
[0020]
In addition, it is generally preferable that each of the protruding wall portions 2 a provided alternately on one side or the other side of each partition wall 2 has a protruding peripheral edge, and the lid plate 9 a of the battery case lid 9 is formed. When the lower edge of each partition wall 9b that hangs down from the back surface is formed in a trapezoidal recess 9c suitable for fitting and contacting the projecting wall 2a, and the battery case lid 9 is applied to the battery case 1 The trapezoidal recessed portion 9c can be fitted into and contacted with the trapezoidal protruding wall portion 2a to constitute the sealed storage battery with the reduced dead space h.
[0021]
In the sealed storage battery, the battery case lid 9 is provided with the exhaust device 16 on the upper surface. That is, as clearly shown in FIGS. 2 and 3, each cell chamber in the battery case 1 is located on the cover plate 9 a of the battery case lid 9 on the side opposite to the side on which the surrounding frame 11 is provided. Are arranged at positions corresponding to 3, 3,..., And the exhaust cylinders 16, 16,... Projecting and covering the upper surface of the exhaust space 18 surrounded by the exhaust enclosure 17, the exhaust cover plate 19 is applied to the upper edge of the exhaust enclosure 17 via an adhesive or a welding agent. The gas discharged from the exhaust cylinders 16, 16,... Can be discharged to the outside through a common exhaust hole 17 a provided in the one side frame wall of the exhaust enclosure 17. Each exhaust cylinder 16 is equipped with a safety device 20 such as a rubber elastic cap-shaped valve. A pair of left and right guide groove frames 17b and 17b leading to the exhaust hole 17a are provided in the exhaust enclosure 17, and a gas filter 17c is interposed in the collective exhaust passage 17c therebetween. preferable.
[0022]
As is apparent from FIG. 2, the cover plate 9a is provided with a surrounding space 10 and a surrounding frame 11 of the present invention in a protruding manner by integral molding in the same manner as described above above the cell chamber 3 at the other end. An upper end plate portion 8a of the other terminal pole 8 extending upward from the negative electrode strap 6 in the drawing is accommodated in the surrounding frame space 10, and the upper end plate portion 8a is provided in the inner frame wall 11a. 12, the upright ear portion 13a of the terminal connection plate 13 provided on the upper surface of the lid plate 9a is made to face the through hole 12 from the outside of the inner frame wall 11a, and the upper end plate portion 8a is connected to the upper end plate portion 8a by a welding gun. The upright ears 13a are hermetically pressure-bonded to the inner and outer wall surfaces of the inner frame wall 11a, and at the same time, are resistance-welded to each other through the through holes 12, and the other end 13b is upright at the center in the width direction of the lid plate 9a. This was connected to the columnar terminal 14 that was made to be a negative electrode terminal NT.
[0023]
Each of the surrounding frames 11 and the common exhaust surrounding frame 17 are configured independently of each other. The covering plate 15 is provided on the upper surface of the surrounding frame 11, and the exhaust covering plate 19 is provided on the exhaust surrounding frame 17. However, as shown in FIG. 2, as shown in FIG. 2, the left and right surrounding frames 11, 11 have one side wall in common with a part of the common exhaust surrounding frame 17. And a common E-shape that serves as both a covering plate 15 on the upper surface of each surrounding frame 11 and an exhaust cover plate 19 on the upper surface of the common exhaust surrounding frame 17. If the upper surfaces of the surrounding frames 11 and 11 and the common exhaust surrounding frame 17 are covered with the covering plate 22, the covering can be performed at once, and the configuration becomes simple. In this case, it is general that the upper edges of the surrounding frames 11 and 11 and the common exhaust surrounding frame 17 and the peripheral edge of the cover plate 22 are bonded by an adhesive or heat welding.
[0024]
The columnar terminals 14 of the negative electrode and the positive electrode need only be cylinders or prisms, and in order to fix them to the upper surface of the lid plate 9a, the lower ends thereof are fixed with an adhesive, bonded by tightening, and when the lid plate 9a is formed. Arbitrary means, such as casting in one, can be considered.
In the illustrated example, a bolt is used as the columnar terminal 14. As the bolt, a head having a triangular or octagonal head is selected and used. In the illustrated example, a hexagonal bolt is used. In order to plant this on the upper surface of the lid plate 9a, as clearly shown in FIG. 4, a fitting recess 23 having the same hexagonal shape as the head portion 14a of the hexagon bolt 14 is formed on the upper surface of the lid plate 9a. A simple operation for fitting the head 14a of the bolt 14 to this is sufficient. Next, the other end portion 13b of the terminal connection plate 13 is fitted to the bolt columnar portion 14b protruding from the upper surface of the lid plate 9a with a through hole 13c provided in the same, and mounted on the upper surface of the head portion 14a of the bolt 14. The bolt terminal 14 is fixed to the upper surface of the lid plate 9a by screwing the nut 24 into the bolt columnar portion 14b and tightening the bolt 24 from above via a plain washer 25 and a spring washer 26. A firm connection with the terminal connection plate 13 is obtained. Thus, even if the twisting force at the time of tightening by the nut 24 is transmitted to the bolt 14, the square head portion 14a is engaged with the square concave portion 23 in the rotation direction, so that the rotation is prevented. Therefore, a predetermined tightening can be achieved with a prescribed torque.
[0025]
In addition, the thickness of the cover plate 9a was made 2 to 5 mm thin, and the square recess 23 was formed on the upper surface by a bent wall at the time of molding as shown in FIG. Accordingly, the lid plate 9a does not require a wall thickness necessary for casting a conventional lead bushing, and can be a thin and lightweight battery case lid 9.
[0026]
It is desirable that the terminal connection plate 13 can be accurately and quickly installed at a predetermined position on the upper surface of the lid plate 9a. Therefore, a positioning frame-shaped guide rib 27 having the same shape as the peripheral shape of the terminal connection plate 13 that acts as a guide when the terminal connection plate 13 is installed is provided with the lid plate 9a as shown in FIG. A fitting recess 28 into which the terminal connection plate 13 is just fitted is formed inside the frame-shaped guide rib 27. The frame-shaped guide rib 27 is generally formed by integral molding when the lid plate 9a is molded, and the height thereof is lower than the thickness of the terminal connection plate 13 in the illustrated example. It can be the same height or somewhat higher. In the illustrated example, the terminal connection plate 13 is formed of a lead or lead alloy molded plate, and is a keyhole plate in which a terminal portion 13b connected to the terminal is bulged in a disk shape, and the plate-shaped terminal pole column One end connected to 8 is an end portion 13a bent upward at a right angle, and accordingly, the shape of the frame-shaped guide rib 27 is also a circular rib portion 27a surrounding the disc-shaped end portion 13b. And two parallel guide rib portions 27b, 27b extending from the circular rib portion 27a for guiding both side edges of the intermediate horizontal plate portion 13d of the terminal connecting plate 13, and the two guide ribs The portions 27b and 27b are arranged at positions that are orthogonal to the inner frame wall 11a of the surrounding frame 11 and are equidistant from the through hole 12 as a center.
Thus, when the terminal connection plate 13 is fitted into the frame-shaped guide rib 27, the terminal connection plate 13 can be automatically installed at a predetermined correct position orthogonal to the inner frame wall 11a of the surrounding frame 11. The resistance welding operation and the connection operation between the columnar terminals 14 can be performed accurately. In this case, in addition to the above-described action, the frame-shaped guide rib 27 protects the terminal connection plate 13 from mechanical shocks from the outside and serves to reinforce the strength.
[0027]
The frame-shaped guide rib 27 does not necessarily need to extend over the entire periphery of the other end 13b of the terminal connection plate 13 and the intermediate horizontal plate portion 13d. For example, as shown in FIGS. It is also possible to use two short parallel rib portions 27b and 27b that guide part of both side edges of 13d. As shown in FIG. 6, in the terminal connecting plate 13, the width of the intermediate horizontal plate portion 13 is narrow at the lower end of the upright ear portion 13a, and the steps 30, 30 are between the narrow portion. However, the tip of the two guide ribs was formed into an L-shaped rib bent inward along the step to enhance the positioning, protection and reinforcement of the terminal connection plate 13.
[0028]
7 is formed as a partial guide rib having notches 31 and 31 in two parallel rib portions 27b and 27b of the frame-shaped guide rib 27, as in the case of FIG. In the intermediate horizontal plate portion 13d of the connecting plate 13, notches 32, 32 are provided at the portions corresponding to the notched portions 31, 31 on both side edges thereof, in particular, easy cutting with a reduced cross-sectional area of the portion. When an overcurrent flows in the storage battery, the easy-cut portion 34 immediately melts to prevent the overcurrent from flowing in the storage battery.
[0029]
FIG. 8 shows an example in which a bolt-type or other columnar terminal 14 is integrally formed by casting a lower end portion 14a such as a square head portion into the lid plate 9a when the battery case lid 9 is formed. In this case, the fixing operation of the bolt 14 with the nut 26 as described above is not necessary. As shown, the head 14a is embedded in the lid plate 9a. Therefore, the other end portion 13b of the terminal connection plate 13 is fitted to the columnar portion 14b of the bolt 14 protruding upward from the upper surface of the lid plate 9a through the hole 13c, and the nut 24 is applied from above. A strong electrical connection between the terminal connection plate 13 and the terminal 14 can be obtained.
The above-described configuration was similarly configured for both the negative and positive columnar terminals 14. In this case, it is sufficient that the easy-cut portion is formed on at least one of the intermediate flat plate portions 13d.
[0030]
When a large number of the storage batteries of the present invention configured as described above are subjected to battery case formation and auxiliary charging, the positive and negative terminals PT and NT of the adjacent storage batteries are connected by a connection bar, a crimp terminal of a connection cable, or the like. For this purpose, it may be attached to the columnar portion 14b of the terminal 14 with a clip or the like that is relatively easy to connect. However, in this case, if the clip is engaged with the columnar portion 14b, the thread of the thread portion may be damaged, and the nut 26 may not be screwed after the damage. Therefore, it is conceivable to attach a clip to the terminal connection plate 13. In this case, the intermediate plate portion exposed to the outside at the notch portions 31 and 31 of the two guide ribs 27b and 27b as shown in FIG. 5, FIG. 6 or FIG. It is preferable to engage the clip with both side portions of 13d, and in particular, when the above-described cutout portions 32, 32 are provided in the exposed portion, the clip engagement state at the cutout portions 32, 32 is stabilized. Good connection can be obtained, battery case formation and auxiliary charging process can be performed well and efficiently, and can be maintained well without missing the thread of the columnar part 14b of the bolt 14, and good quality Is guaranteed.
[0031]
Moreover, in order to improve the safety of the storage battery of the present invention, it is desirable to cover the exposed metal surface of the terminal connection plate 13 exposed on the outer surface of the battery case cover of the storage battery.
FIG. 9 shows a case in which the upright ear portion 13a of the terminal connection plate 13 is covered, and the upright ear is protruded by integral molding from the covering plate 15 covering the upper surface of the surrounding frame 11 or the upper-shaped covering plate 22. Covered with a synthetic resin cover 33 having an L-shaped cross section that protrudes forward in a hook shape so as to cover the upper end of the portion 13a and hangs downward to cover the front surface of the vertical surface where the upright ear portion 13a rises. Is.
FIG. 10 is an extension of a horizontal plate-like extension cover 34 that extends further horizontally from the lower end of the L-shaped cover 33 shown in FIG. 9 and covers the upper surface of the intermediate horizontal plate portion 13 d of the terminal connection plate 13. is there.
FIG. 11 shows an upright ear portion of the terminal connection plate 13 below it by an integrally formed synthetic resin horizontal plate cover 35 extending horizontally in the direction of the terminal 14 from the covering plate 15 or 22 covering the upper surface of the surrounding frame. The outer surface of 13a and the intermediate horizontal plate part 13d are covered from above, while being horizontally covered by the exhaust cover plate cover 19 or the E-shaped cover plate 22 covering the upper surface of the common exhaust enclosure 17 facing the casing 11. The upper surface of the lower cover plate 9a is covered with an integrally formed synthetic resin horizontal plate cover 36 extending in front of the other end 13b of the terminal connection plate 13 in the direction of the terminal 14, and these covers 35 And 36 are covered with a space 37 necessary for tightening the nut 24 with a torque wrench or the like.
[0032]
Needless to say, these covers are provided on both the positive terminal PT side and the negative terminal NT side.
[0033]
12 and 13 further reduce the dead space h between the back surface of the battery case lid and the electrode plate group in the battery case, increase the volume efficiency and further improve the battery energy density, 1 shows an embodiment of a storage battery equipped with a compact exhaust device. That is, in this embodiment, the plate terminal pole 8 is formed relatively short, and the entire length thereof is not only accommodated in the space 10 in the surrounding frame 11 provided in the lid plate 9a, but also safety. The stack 16 equipped with the device 20 was accommodated. As in the previous embodiment, the plate terminal pole 8 is a terminal connection plate installed on the upper surface of the outer cover plate 9a through a through hole 12 provided in the inner frame wall 11a of the surrounding frame 11. The other end portion 13b is fitted to a columnar terminal 14 provided upright on the lid plate 9a through the hole 13c, and is screwed into the columnar portion 14b. The bolts 14 and the terminal connection plate 13 were fixedly connected by tightening from above with the combined nuts 24. On the other hand, the projecting wall portions 2a and 2a provided alternately on one side or the other side of each partition wall of the battery case 1 are arranged on both sides of the cover plate 9a of the battery case lid 9 applied to the battery case 1. The straps 5 and 6 having different polarities are accommodated in the long rectangular enclosures 38 and 39 projecting upward from the surface 9a and positioned above the battery case 1 in the enclosures 38 and 39, respectively. The inter-cell connection is made through the through hole 7 provided in the wall 2a. With such a configuration, the space h between the electrode plate group 4 and the back surface of the lid plate 9a in each cell chamber is almost eliminated, resulting in a compact storage battery with significantly increased volumetric efficiency, and a higher height. , Can accommodate a group of electrode plates composed of negative electrode plates, resulting in a storage battery having an increased battery capacity.
[0034]
The configuration of the present invention shown in FIGS. 12 to 13 will be described in more detail below.
That is, FIG. 12 is a transverse sectional view similar to that shown in FIG. 3 of the storage battery, and FIG. 13 is an exploded oblique view thereof.
According to this embodiment, the electrode plate group 4 accommodated in each cell chamber 3 in the battery case 1 has a positive electrode plate P and a negative electrode plate N having a height that reaches the vicinity of the upper end of the peripheral side wall 1 a of the battery case 1. And the separator S interposed between the electrode plates, the positive electrode strap 5 connecting the ear p rows of the plurality of positive electrode plates P and the negative electrode strap 6 connecting the ear n rows of the plurality of negative electrode plates N, respectively, The partition wall 2 is positioned above the peripheral side wall 1a of the battery case 1, and projecting wall portions 2a and 2a are provided on both sides of the partition wall 2, and further, on one side or the other side of these projecting wall portions. Protruding wall portions 2a for inter-cell connection with through holes 7 formed in the center are formed on the alternately projecting wall portions 2a, and in each of the projecting wall portions 2a, the adjacent cell chambers 3 The tabs 5a and 6a of the straps 5 and 6 of different polarities arranged in a line of the electrode plate groups 4 and 4 through the through holes 7 are arranged. Resistance welding is performed by using a gun, and relatively short plate-like terminal poles 8 and 8 are implanted in the terminal straps 6 and 5 in the cell chambers 3 and 3 at both ends thereof. The terminal straps 6, 5 and the plate-like terminal poles 8, 8 are accommodated in the internal spaces 10, 10 of the surrounding frames 11, 11 provided on one side of the lid plate 9 a of the battery case lid 9. Further, in each of the surrounding frames 11 and 11, the exhaust pipes 16 and 16 equipped with the safety devices 20 and 20, and in the illustrated example, the safety valves 20 and 20 made of a cap rubber are respectively accommodated as follows. did.
That is, as shown in FIGS. 12 and 13, the battery case lid 9 has a frame 11 containing positive and negative plate terminal poles 8 and 8 on one side of the lid plate 9a. , 11 and the lid plate at a position corresponding to the straps 5, 6 having different polarities arranged on one side of the electrode plate groups 4, 4,. The lid plate 9a that protrudes vertically upward by integral molding with the lid plate 9a that accommodates the one-side protruding wall portions 2a, 2a,... And the other side of the electrode plate group 4, 4, ... in all the cell chambers 3, 3, ... in the battery case, on the other side of the cover plate 9a. The other protruding wall portions 2a, 2a,... Are accommodated on the periphery of an elongated rectangular opening 41 provided at a position corresponding to the straps 5 and 6 of different polarities arranged in FIG. By integral molding with the lid plate 9a which projects vertically upwards by integral molding in the lid plate 9a to project a long rectangle surrounding frame 38 in the lid plate 9a top. Separately from this, the cover plate 9b covering the opening 40 of the long rectangular frame 39 on one side of the cover plate 9a and the opening 41 of the long rectangular frame 38 on the other side shown in FIG. A cover plate portion 9c to be coated is prepared. That is, the cover plate portion 9b has a common exhaust frame 17 'on the rib projecting from the upper surface thereof, and the exhaust cylinders 16, 16 provided with safety devices 20, 20 in the frame 17', respectively. ,... Are formed, and the inside of the surrounding frame 17 ′ is formed as a common exhaust space 18 ′, while provided on the lower surface of the lid plate portion 9 b on the respective partition walls 2, 2,. Are formed with downward concave grooves 42, 42,... For receiving and abutting the upper ends of the protruding wall portions 2a, 2a,... The opening 40 was covered by being brought into contact with the upper end of the wall 2a and bonded by an adhesive or heat welding. The lid plate portion 9c for covering the upper surface opening 41 of the other side surrounding frame 38 is formed with a downward concave groove 43 that accommodates and abuts each protruding wall portion 2a on the lower surface, and a rib-shaped enclosure on the upper surface. A frame 44 was provided, and the thickness was the same as that of the lid plate portion 9b. The cover plate portion 9c was brought into contact with the surrounding frame 38 and the upper ends of the protruding wall portions 2a, and was bonded by an adhesive or heat welding to cover the opening 41. The lid plate portion 9b is formed in a T-shaped lid plate portion 9b having a casing-shaped extension portion 17'a extending from the center of an example of a long rectangular plate to the one side, and T on the upper surface thereof. A rib-shaped common exhaust enclosure 17 'was formed, and a gas filter 45 was provided in the enclosure 17' on the upper surface of the casing extension 17'a. Reference numeral 46 denotes a concave groove for fitting in the surrounding frame 39 provided on the lower surface of the base portion of the casing extension 17′a. Further, a cutout recess 47 for fitting the base portion is formed at one side edge of the surrounding frame 39 at a portion where the base portion of the casing-shaped extension portion 17'a of the common exhaust surrounding frame 17 'crosses. Provided. Thus, when the base of the casing extension 17'a of the common exhaust enclosure 17 'is fitted into the cutout recess 47, the height position of the T-shaped common exhaust enclosure 17' It was made to become the same height position as the upper end surface of the surrounding frame 39, that is, the same icicle position. In this way, after the respective cover plate portions 9b and 9c are applied to the respective opening portions 40 and 41, the exhaust cover plate 22 'on the letter “E” shown in FIG. Apply by welding. The exhaust cover plate 22 'is provided with one common exhaust hole 17'a at a position corresponding to the upper side of the gas filter 45. Thus, the gas generated in the respective cell chambers 3, 3,... When the storage battery is charged is transferred from the respective exhaust cylinders 16, 16,... Into the rib-shaped common exhaust enclosure 17 'on the upper surface thereof. It operates as a stable and stable sealed battery that is discharged to the outside through the gas filter 45 through the common single exhaust hole 17a '.
[0035]
【The invention's effect】
According to the invention of claim 1, the electrolyte adhering to the positive and negative pole terminals for the positive and negative columnar terminals oozes up, and lead is cast into the lid of the battery case lid that fits at the upper end of the electrolyte. The inconvenience of leaking to the outside through the boundary between the bushing and the cover plate is eliminated, and a thin battery case cover is required as compared with a battery case cover in which lead bushings are cast, and a lightweight storage battery can be obtained.
According to the invention which concerns on Claim 2, the space between the back surface of the cover plate of a battery case lid and the electrode group in a battery case can be made small, a volume storage efficiency improves and a short storage battery is obtained. .
According to the invention which concerns on Claim 3, said storage battery provided with the exhaust apparatus common in the said Claim 1 and 2 is obtained.
According to the invention of claim 4, the space between the back surface of the lid plate of the battery case lid and the electrode plate group can be almost eliminated, and the positive and negative electrode plates having higher height are used. An electrode plate group is provided, and a storage battery having a higher capacity can be obtained.
According to the invention which concerns on Claim 5, the storage battery which further improved the volume efficiency and the battery energy density is obtained.
According to the invention of claim 6, a storage battery having the effect of the invention of claim 5 and further including a compact exhaust device can be obtained.
According to the invention of claim 7, a storage battery including the preferred compact exhaust device of the invention of claim 6 can be obtained.
According to the invention which concerns on Claim 8, a connection with this terminal connection board and the terminal implanted in this cover board, and installation and fixing of this terminal can be performed easily.
According to the invention which concerns on Claim 9, this terminal can be simultaneously planted to this cover board at the time of shaping | molding of this battery case cover.
According to the invention of claim 10, the terminal connection plate can be reliably installed at a predetermined position on the upper surface of the lid plate, and the facing and connection operation with the plate-shaped terminal pole can be accurately performed. Can be done.
According to the invention of claim 11, an external terminal such as a clip can be connected through the defective part of the frame-shaped guide rib, the thread of the columnar part of the bolt is prevented from being damaged by the clip, and the nut is attached to the terminal. It can be tightened well.
According to the twelfth aspect of the present invention, when an overcurrent flows through the terminal connection plate, it is easily melted, and an explosion due to the overcurrent flowing inside the storage battery can be prevented.
According to the invention which concerns on Claims 11-14, while being able to protect from a contact with the external field of this terminal connection board, the nut tightening by this torque wrench etc. can be performed favorably.
[Brief description of the drawings]
FIG. 1 is a perspective view of an example storage battery according to the present invention.
FIG. 2 is a plan view of the storage battery shown in FIG. 1 excluding an exhaust cover plate.
3A and 3B are sectional views of FIG. 2, FIG. 3A is a sectional view taken along line XX, and FIG. 3B is a sectional view taken along line YY;
FIG. 4 is an exploded perspective view of the main part of the storage battery.
FIG. 5 is a plan view of a modification of the main part.
FIG. 6 is a plan view of a further modification of the main part.
FIG. 7 is a plan view of a further modification of the main part.
FIG. 8 is a longitudinal sectional view of a modification of the main part.
FIG. 9 is a longitudinal sectional view of a further modification of the main part.
FIG. 10 is a longitudinal sectional view of a further modification of the main part.
FIG. 11 is a vertical slope view of a further modification of the main part.
FIG. 12 is a cross-sectional view of a storage battery according to another embodiment of the present invention.
FIGS. 13A to 13C are exploded views of the storage battery shown in FIG. 10, FIG. 13A is a plan view of the storage battery with the cover plate portion removed, and FIG. 13B is a perspective view of the cover plate portion; c) An oblique view of the exhaust cover.
FIG. 14 is a cross-sectional view of a part of a conventional storage battery.
[Explanation of symbols]
1 Battery Case 1a Peripheral Side Wall of Battery Case 2 Partition Wall
2a Protruding wall 3 Cell chamber 4 Electrode plate group
5 Positive strap 5a Tab 6 Negative strap
6a Tab N Negative electrode plate n Negative electrode ear
P Positive electrode plate p Positive electrode ear 7 Through hole
8 Pole-shaped terminal pole 8a Top plate of the plate-shaped terminal pole
9 Battery case lid 9a Lid plate 9b Lid plate part
9c Cover plate part 10 Enclosure space
11 Plate pole terminal pole enclosing frame 11a Frame wall, inner frame wall
12 through-hole 13 terminal connecting plate 13a upright ear
13b Other end 13c Hole 13d Intermediate horizontal plate
14 Columnar terminal 14a Head of columnar terminal 14b Columnar part
15 Cover plate 16 Exhaust cylinder 17 Exhaust enclosure
17 'exhaust frame 17a common exhaust hole 17a' common exhaust hole
18 Exhaust space 18 'Exhaust space 19 Exhaust cover
20 Safety device PT Positive terminal NT Negative terminal
22 E-shaped covering plate 22 'E-shaped covering plate 23 Square recess
24 Nut 27 Frame-shaped guide rib 30 Fitting concave surface
31 Notch 32 Notch 33-35 Cover
38 Enclosure 39 Enclosure h Space height
40 opening 41 opening

Claims

A plate-shaped terminal pole column is implanted in a terminal strap connected to the positive electrode ear row and the negative electrode ear row of the electrode plate group housed in the cell chamber in the battery case, and at least the upper end of the plate terminal electrode column The plate portion is accommodated in the inner space of the surrounding frame protruding from the upper surface of the lid plate on one side of the lid plate of the battery case lid applied to the battery case, and provided on the frame wall of the surrounding frame. While facing the through-hole, the ear portion standing upright from one end of the terminal connection plate installed horizontally on the upper surface of the lid plate of the battery case lid is made to face the through-hole of the inner frame wall of the surrounding frame, and the penetration The upper end plate portion of the terminal pole column facing each other through the hole and the ear portion of the terminal connection plate are connected by resistance welding, and the other end portion of the terminal connection plate is made upright on the upper surface of the lid plate. A storage battery comprising: a positive electrode terminal or a negative electrode terminal;

A part of each partition wall of the battery case is formed in a wall part protruding above the upper edge of the peripheral side wall of the battery case at a position where the cells are connected to each other, and adjacent cells are formed on both sides of the protruding wall part. 2. The storage battery according to claim 1, wherein rising tabs of straps of different polarities in the electrode plate group of the chamber are brought into contact with each other, and the cells are connected by resistance welding through a through hole provided in the partition wall.

A cylindrical exhaust hole is provided at a position corresponding to each cell chamber of the battery case on the cover plate of the battery case cover, a safety valve is attached to the exhaust tube, and these exhaust tubes are surrounded on the upper surface of the cover plate. A common covering plate including the covering plate that projects a common exhaust surrounding frame, covers the upper surface of the surrounding space by extending a part of the exhaust covering cover, and covers the upper surface of the surrounding space. The storage battery according to claim 1 or 2, wherein the storage battery is formed as described above.

The positive and negative straps connecting the positive and negative electrode ear rows projecting on both sides above the electrode plate group housed in each cell chamber of the battery case are positioned above the battery case, and the partition walls Protruding wall portions projecting upward from the peripheral side walls are provided, and the positive strap tabs and the negative strap tabs that are adjacent to each other are connected to each other through the through holes provided in the projecting wall portions, and the cell chambers at both ends are connected. The plate terminal poles planted on the positive strap and the negative strap are respectively housed in enclosures protruding from the lid of the battery case lid applied to the battery case, and on both sides of the lid plate. The storage battery according to claim 1, wherein each protruding wall portion having the inter-cell connection portion is accommodated in a protruding enclosure.

The storage battery according to claim 3 , wherein an exhaust pipe equipped with the safety valve is accommodated in the surrounding frame in which at least the upper end plate portion of the plate-shaped terminal pole is accommodated.

A long rectangular cover plate provided with an exhaust pipe fitted with a safety valve is provided on one side of the cover plate, and a common exhaust rib-shaped frame is provided on the upper surface. 6. The storage battery according to claim 4, wherein a long rectangular cover plate is provided on the surrounding frame, and an exhaust cover plate is provided on an upper surface of the cover plate.

The cathode terminal and the anode terminal are each composed of a bolt having a square head, and the head of the bolt is fitted into a square concave surface of the same shape formed on the upper surface of the lid plate of the battery case lid, The other end of the terminal connection plate was fitted to the bolt column with a through-hole provided in the terminal connection plate, and the other end was tightened to the bolt head with a nut applied to the bolt column. The storage battery according to any one of claims 1 to 6.

The storage battery according to claim 7, wherein a head portion of the bolt is cast and fixed to the lid plate when the battery case lid is formed.

In order to guide and position the installation surface of the terminal connection plate on the upper surface of the lid plate, a frame-shaped guide rib that guides along the peripheral edge of the terminal connection plate is provided so as to project the inside of the frame-shaped guide rib to the terminal. The storage battery according to any one of claims 1 to 8, wherein the storage battery is formed on a concave fitting surface of the connection plate.

The storage battery according to claim 9, wherein the frame-shaped guide rib is partially provided with a notch.

The storage battery according to claim 1, wherein a cutout portion is provided in an intermediate horizontal plate portion of the terminal connection plate, and an easily soluble portion whose cross-sectional area is partially reduced is provided.

2. The storage battery according to claim 1, further comprising a cover having an L-shaped cross section that extends a cover plate that covers an upper surface of the enclosure space and covers an upper end of a rising edge of the terminal connection plate and a vertical outer surface. .

The cross section L-shaped cover, battery according to claim 12, characterized in that a horizontal plate-shaped extension cover covering the upper surface of the horizontal intermediate plate portion of the terminal connecting plate extends horizontally from the lower end.

A horizontal plate cover extending in the direction of the terminal horizontally from the cover plate covering the upper surface of the surrounding frame; and a horizontal plate cover extending in the direction of the terminal horizontally from the exhaust cover plate covering the upper surface of the exhaust surrounding frame. The storage battery according to claim 1, wherein a space for tightening the nut with a torque wrench or the like is left between the covers.