JPS62163259A - Sealed lead storage battery - Google Patents

Abstract

PURPOSE:To enhance reliability, by providing common space making notches over jar walls between a plurality of cells, coupling the cells to each other in the notches, fuse-bonding a jar and an inner cover to each other, and then pouring an electrolytic solution in, to prevent improper sealing. CONSTITUTION:A plurality of cells 14 each comprising a positive electrode plate, a negative electrode plate and a separator are housed in a jar 11 and coupled to each other by connector 16 at the electrode rods 17 of the cells so that a hermetically-sealed leaden storage battery is constituted. Notches 11b of prescribed depth are provided in the tops of battery walls 11a to make a common space over the cells 14. In the space, the cells 14 are coupled to each other. An inner cover 12 and the jar 11 are then fuse-bonded to each other. An adhesive 19 is poured in for sealing. An electrolytic solution is then poured in through a gas release port and introduced into all the cells 14 through the notches 11b. A safety valve 20 is thereafter attached. For these reasons, the construction of the battery is simplified, and the sealing thereof is prevented from becoming improper due to the scattering of the electrolytic solution when it is poured in.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は密閉型鉛蓄電池に関する。[Detailed description of the invention] Industrial applications The present invention relates to a sealed lead acid battery.

従来の技術 従来の一括弁方式の密閉型鉛蓄電池は、複数のセルから
構成きれ、セル上方に共通空間を設けて一括弁構造とし
ている。BACKGROUND OF THE INVENTION A conventional sealed lead-acid battery of the lump-valve type is composed of a plurality of cells, and a common space is provided above the cells to form a lump-valve structure.

以下従来の一括弁方式の密閉型鉛蓄電池について説明す
る。第３図は従来の一括弁方式の密閉型鉛蓄電池の一例
を示す断面図、第４図は第３図のＢ−８断面図である。A conventional sealed lead-acid battery of the bulk valve type will be described below. FIG. 3 is a sectional view showing an example of a conventional sealed lead-acid battery of the bulk valve type, and FIG. 4 is a sectional view taken along line B-8 in FIG.

第３図および第４図において、１は電槽、１ａは電槽隔
壁、１ｂは電槽隔壁１ａの上部に設けた貫通孔、２は中
ふた、３は上ぶた、４は極板群、５は電槽内を共通空間
とするために電槽隔壁１ａの上端をわずかに切り欠いて
形成された通気孔、６は各セルの極柱７を貫通孔１ｂを
通して電気的に接続するための接続体、８は最両端の極
柱７に接続される端子、９は電池を密閉させるための接
着剤で、端子８の下端部を埋め込んでいる。１０は安全
弁で、上ぶた３はこれを密閉している。In FIGS. 3 and 4, 1 is a battery case, 1a is a battery case partition wall, 1b is a through hole provided at the top of the battery case partition wall 1a, 2 is an inner lid, 3 is an upper lid, 4 is a group of electrode plates, 5 is a ventilation hole formed by slightly cutting out the upper end of the battery case partition wall 1a to create a common space inside the battery case, and 6 is a vent hole for electrically connecting the pole columns 7 of each cell through the through hole 1b. The connecting body 8 is a terminal connected to the pole pillars 7 at both ends, and 9 is an adhesive for sealing the battery, which embeds the lower end of the terminal 8. 10 is a safety valve, and the upper lid 3 seals this.

このように構成された一括弁方式の密閉型鉛蓄電池は、
極板群４を電槽１の各セル内に挿入し、極柱７と接続体
６の溶接を行ない、電解液を注入して中ふた２を溶着し
ている。次に端子８を取付け、接着剤９を流し込み、安
全弁１０を装着し、その上に上ぶた３を置いて密閉構造
としている。The sealed lead-acid battery with the bulk valve system configured in this way is
The electrode plate group 4 is inserted into each cell of the battery case 1, the electrode pole 7 and the connecting body 6 are welded, and the inner lid 2 is welded by injecting an electrolyte. Next, a terminal 8 is attached, an adhesive 9 is poured in, a safety valve 10 is attached, and an upper lid 3 is placed on top of the safety valve 10 to form a sealed structure.

発明が解決しようとする問題点 しかしながら上記の従来の構成では、電解液を注入した
後に電槽１と中／Ｓ％た２の溶着を行なわなければなら
ないため、溶着面あるいは端子取付け極柱部に注液時の
電解液飛散により、あるいは製造工程上での振動などに
より８硫酸が付着し、したがって、溶着あるいは接着に
よる気密性に難があった。特に、電解液を多量に入れて
電槽化成を行なう場合は大きな問題となっていた。また
、電槽隔壁１ａには極柱７を接続するための貫通孔１ｂ
と通気孔５との２ケ所の孔があり、構造的にも複雑にな
っていた。Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, since the battery case 1 and the medium/S% 2 must be welded after the electrolyte is injected, the welding surface or the terminal mounting pole part must be welded. The 8-sulfuric acid adhered due to scattering of the electrolyte during injection or vibration during the manufacturing process, resulting in difficulty in airtightness due to welding or adhesion. In particular, this has been a big problem when a large amount of electrolyte is added to form a battery. In addition, the battery case partition wall 1a has a through hole 1b for connecting the pole pole 7.
There were two holes, 1 and a ventilation hole 5, making the structure complex.

本発明は上記従来の問題点を解決するもので、構造自身
を簡略化するとともに、製造上の不良を減少させかつ電
池の信頼性向上も実現できる一括弁方式の密閉型鉛蓄電
池を提供することを目的とするものである。The present invention solves the above-mentioned conventional problems, and provides a sealed lead-acid battery with a single valve type that can simplify the structure, reduce manufacturing defects, and improve battery reliability. The purpose is to

問題点を解決するための手段 この問題点を解決するために本発明の鉛蓄電池は、セル
間の隔壁に電槽容器内部に共通空間を形成するための切
欠きを設けると共に、その切欠き部内で極柱接続を施し
、電槽と中ふたの溶着あるいは接着を行なって密閉構造
としたものである。Means for Solving the Problem In order to solve this problem, the lead-acid battery of the present invention is provided with a notch in the partition wall between the cells to form a common space inside the battery case, and a cutout inside the notch. The battery case and inner lid are welded or glued together to create a sealed structure.

作用 上記構成により、構造自身を簡略化できるものであり、
しかも中ふたを溶着あるいは接着した後に、セルの排気
筒から電解液を注入し、それが切欠ぎを通して全セルに
注液できることから、電槽と中ふたの溶着部あるいは端
子取付は極柱部に電解液が付着するのを防止でき、密閉
不良を低減できる。Effect: With the above configuration, the structure itself can be simplified.
Moreover, after welding or gluing the inner lid, the electrolyte can be injected from the cell exhaust pipe, and it can be injected into all cells through the notch, so the welding part of the battery case and the inner lid or the terminal installation can be done on the pole part. It is possible to prevent the electrolyte from adhering and reduce sealing defects.

実施例 以下本発明の一実施例を図面にもとづいて説明する。第
１図は本発明の一実施例による密閉型鉛蓄電池の断面図
、第２図は第１図のＡ−Ａ断面図である。第１図および
第２図において、１１は電槽、１１ａは電槽隔壁、１１
ｂは電槽隔壁１１ａの上端に所定深さに切り込まれた切
欠きであり、これによりセル上方には共通空間が形成さ
れる。１２は中ふた、１３は上ふた、１４は極板群、１
７は極柱、１８は端子、１９は接着剤、２０は安全弁で
、これらはＷ３図のものと同じである。１６はセル間で
対向する極柱１７を接続するための接続体で、切欠き１
１ｂよりは幅せまく、切欠き１１ｂを通して配置されて
いる。また■°の点線は電解液注入直後の液面高さを示
し、切欠き１１ｂの深さは、注入後の液面がセル間を通
して■の位置に達することができるように、極板群１４
の高さと初期液面相当高さの中間にくるように設定され
る。EXAMPLE An example of the present invention will be described below based on the drawings. FIG. 1 is a sectional view of a sealed lead-acid battery according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. 1 and 2, 11 is a battery case, 11a is a battery case partition wall, 11
b is a notch cut to a predetermined depth in the upper end of the container partition wall 11a, thereby forming a common space above the cells. 12 is the inner lid, 13 is the top lid, 14 is the electrode plate group, 1
7 is a pole pole, 18 is a terminal, 19 is an adhesive, and 20 is a safety valve, which are the same as those in Figure W3. Reference numeral 16 denotes a connecting body for connecting pole columns 17 facing each other between cells, and a notch 1
It is narrower in width than 1b and is placed through the notch 11b. In addition, the dotted line ■° indicates the liquid level height immediately after the electrolyte is injected, and the depth of the notch 11b is set so that the liquid level after injection can pass between the cells and reach the position (■) in the electrode plate group 14.
and the height equivalent to the initial liquid level.

本実施例では、３セルから構成された６■用の電池で試
作を行なった。また電４ｉ１１、中ふた１２はポリプロ
ピレン樹脂製を用いた。該ず、未化成の正極板、負極板
をガラス繊維のセパレータを介して重ね合わせ耳部を溶
接して極板群１４とした。次にこの極板群１４を予め隔
壁１１ａの上端に切欠き１１ｂを形成した電槽１１に挿
入した。この各極板群１４の極柱１７を切欠き１１ｂを
通して配置された接続体１６に溶接し、中ふた１２と電
槽１１を熱溶着し、端子１８を取付け、接着剤１９を流
して封止した。電解液の注入は３セル分の注液量を中央
のセルの排気口から行なった。注入速度は３セルを別々
に行なった場合の３倍、つまり１つのセルの注入に要す
る時間と同じ時間で行なったが、電解液の溢れは無かっ
た。その後、安全弁２０を装着し、上ぶた１３を取り付
けた。In this example, a 6-inch battery consisting of 3 cells was used as a prototype. Further, the battery 4i11 and the inner lid 12 were made of polypropylene resin. First, an unformed positive electrode plate and a negative electrode plate were stacked together with a glass fiber separator interposed therebetween, and the edges were welded to form an electrode plate group 14. Next, this electrode plate group 14 was inserted into the battery case 11 in which a notch 11b was previously formed at the upper end of the partition wall 11a. The pole post 17 of each electrode plate group 14 is welded to the connecting body 16 placed through the notch 11b, the inner lid 12 and the battery case 11 are heat welded, the terminal 18 is attached, and the adhesive 19 is poured to seal it. did. The electrolyte was injected in an amount equivalent to three cells from the exhaust port of the central cell. Although the injection speed was three times that of when three cells were injected separately, that is, the same time as the time required to inject one cell, there was no overflow of the electrolyte. Thereafter, the safety valve 20 was attached, and the upper lid 13 was attached.

次に電槽化成を行なったが、電槽化成は、初期に各セル
の液が繋がっているにもかかわらず、良好な化成上がり
が得られた。これはセル内での正極と負極間の抵抗より
もセル間の接続体の抵抗の方が遥かに大きり、電流はは
ζんど全極板の化成に使われ、化成末期になると電解液
が減少して液面が切欠き１１ｂよりも下がり各セルが独
立な系になり、充分な放電容量が得られるものと推察さ
れる。Next, we carried out cell forming, and although the liquids in each cell were initially connected, good chemical formation was obtained. This is because the resistance of the connections between the cells is much greater than the resistance between the positive and negative electrodes within the cell, and the current is mostly used to form all the plates, and at the end of the process, the electrolyte It is presumed that the liquid level decreases and the liquid level falls below the notch 11b, making each cell an independent system and obtaining sufficient discharge capacity.

このようにして作った本発明の電池１００（！］と、従
来の電解液を注入した後生ふた１２を熱溶着して作った
電池を１００個用意し、４０℃、４ケ月間放置した状態
での自己放電テストを行なった。その結果、電池の密閉
性が悪く容量が極端に低下したものは、従来方法による
電池では１００個中５個あったが、本発明による電池に
はみられなかった。また、容量が極端に低下した従来の
電池の解析を行なったところ、負極板の酸化による劣化
であることがわかった。このことは、電槽の溶着面ある
いは端子取付は極柱部に電解液が付着し、このため完全
な密封ができず、長期放置によって空気中の酸素が侵入
したものと考えられる。We prepared 100 batteries of the present invention made in this way (!) and 100 batteries made by heat-welding the conventional electrolyte-filled lids 12, and left them at 40°C for 4 months. A self-discharge test was conducted on the batteries.As a result, 5 out of 100 batteries produced by the conventional method had poor sealing performance and an extremely low capacity, but none of the batteries produced by the present invention showed an extremely low capacity. In addition, when we analyzed a conventional battery whose capacity had drastically decreased, we found that the deterioration was due to oxidation of the negative electrode plate. It is thought that the liquid adhered to the container, making it impossible to seal it completely, and that oxygen from the air entered the container due to long-term storage.

以上のように本実施例によれば、セル間の隔壁に切欠き
を設けるとともに、その切欠き部で極柱接続を施し、電
槽と中ふたの溶着あるいは接着を行なうので、その後に
排気筒から電解液を注入しても隔壁の切欠きを通して全
セルに注液することが可能となり、電池構造を簡単にで
きるとともに、電池の信頼性を向上させることができる
。As described above, according to this embodiment, notches are provided in the partition walls between the cells, pole connections are made at the notches, and the battery case and the inner lid are welded or bonded, and then the exhaust pipe is connected. Even if the electrolyte is injected through the notch in the partition wall, it becomes possible to inject the electrolyte into all the cells, which simplifies the battery structure and improves the reliability of the battery.

発明の効果 以上のように本発明によれば、セル間の隔壁に切欠きを
設け、その切欠き部を通して極柱接続を施し、電槽と中
ふたの溶着あるいは接着を行なうので、その後に排気筒
から電解液を注入し隔壁の切欠きを通して全セルに注液
することが可能となり、電池構造を簡単にできるととも
に、信頼性の高い優れた密閉型鉛蓄電池が得られる。Effects of the Invention As described above, according to the present invention, notches are provided in the partition walls between cells, pole connections are made through the notches, and the battery case and the inner lid are welded or bonded. It becomes possible to inject electrolyte from the cylinder and into all cells through the notches in the partition walls, which simplifies the battery structure and provides an excellent, highly reliable sealed lead-acid battery.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例における密閉型鉛蓄電池の断
面図、第２図は第１図のＡ−Ａ断面図、第３図は従来の
一括弁方式密閉型鉛蓄電池の断面図、第４図は第３図の
Ｂ−Ｂ断面図である。 １１・・・電槽、１１ａ・・・電槽隔壁、１１ｂ・・・
切欠き、１２・・・中ふた、１４・・・極板群、１６・
・・接続体、１７・・・極柱、１８・・・端子、１９・
・・接着剤 代理人　　　森　　本　　筏　　弘 第１図 第２図 第３図 ← 第Δ図FIG. 1 is a sectional view of a sealed lead-acid battery according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. 11... Battery container, 11a... Battery container partition, 11b...
Notch, 12... Inner lid, 14... Plate group, 16.
... Connection body, 17 ... Pole column, 18 ... Terminal, 19.
...Adhesive Agent Hiroshi Morimoto Figure 1 Figure 2 Figure 3 ← Figure Δ

Claims (1)

【特許請求の範囲】[Claims] １、複数のセル間の電槽隔壁上部に共通空間形成用の切
欠きを設け、上記切欠き部内に上記セル間で対向する極
柱を接続する極柱接続体を設け、電槽と中ふたを溶着あ
るいは接着して密閉構造とした密閉型鉛蓄電池。1. A notch is provided at the top of the battery case partition wall between a plurality of cells to form a common space, a pole connector is provided in the notch to connect the pole poles facing each other between the cells, and the battery case and the inner lid are connected. A sealed lead-acid battery that has a sealed structure by welding or gluing.