JPS6259959U - - Google Patents

Description

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

図はこの考案の一実施例によるアルカリ電池の
主要部分の断面図である。 １０……正極缶、１２……正極、１４……セパ
レータ、１６……負極、１８……集電子、２０…
…封口ガスケツト、２２……負極端子板、２２ａ
……ガス抜孔、２４……外環体、２４ａ，２４ｂ
，２４ｃ……環状壁、２４ｄ……液溜め空間、２
４ｅ……環状凹部、２６……中栓体、２６ｂ……
筒部、２６ｃ……フランジ部、２６ｄ……環状凸
部、３０……高吸水性樹脂。 The figure is a sectional view of the main parts of an alkaline battery according to an embodiment of this invention. 10... Positive electrode can, 12... Positive electrode, 14... Separator, 16... Negative electrode, 18... Current collector, 20...
...Sealing gasket, 22...Negative terminal plate, 22a
... Gas vent hole, 24 ... Outer ring body, 24a, 24b
, 24c... annular wall, 24d... liquid reservoir space, 2
4e...Annular recess, 26...Inner stopper, 26b...
Cylindrical portion, 26c...flange portion, 26d... annular convex portion, 30... super absorbent resin.

Claims (1)

【実用新案登録請求の範囲】 発電要素を収納した有底円筒形の正極缶と、こ
の正極缶の上端開口部の内周に嵌合された合成樹
脂製の封口ガスケツトと、この封口ガスケツトの
上面側に嵌合されたガス抜孔を有する負極端子板
と、上記封口ガスケツトの中心を貫通して装着さ
れ、上記負極端子板の内面に上端が接合された集
電子とを備えたアルカリ電池であつて； 上記封口ガスケツトは、上記正極缶の上端開口
部の内周と上記負極端子板の外周縁の間に挾み込
まれる環状壁を含むドーナツ形の外環体と、上記
集電子が緊密に嵌合して貫通する中心孔を有する
円筒形の内栓体との２つの部品で構成されていて
、上記外環体の内周孔内に上記内栓体が緊密に嵌
合装着され、上記正極缶内の異常高圧を受けて上
記外環体と上記内栓体との接合部近傍の一部が弾
性変形してこの両部品の境界面に排気経路が形成
されるように構成され； かつ上記封口ガスケツトと上記負極端子板との
間の空間で、上記排気経路と連通する空間にアル
カリ電解液を吸収する高吸水性樹脂が貯留されて
いることを特徴とする防爆形アルカリ電池。[Scope of Claim for Utility Model Registration] A bottomed cylindrical positive electrode can housing a power generation element, a synthetic resin sealing gasket fitted to the inner periphery of the upper opening of the positive electrode can, and the upper surface of this sealing gasket. An alkaline battery comprising: a negative terminal plate having a gas vent fitted to the side thereof; and a current collector mounted through the center of the sealing gasket and having an upper end joined to the inner surface of the negative terminal plate. ; The sealing gasket has a donut-shaped outer ring body including an annular wall inserted between the inner periphery of the upper end opening of the positive electrode can and the outer periphery of the negative electrode terminal plate, and the current collector is tightly fitted into the outer ring body. It is composed of two parts: a cylindrical inner plug body having a central hole that passes through the outer annular body, and the inner plug body is tightly fitted into the inner circumferential hole of the outer ring body, and the positive electrode A part of the outer ring body and the inner plug body near the joint part is elastically deformed in response to abnormally high pressure inside the can, and an exhaust path is formed at the interface between the two parts; An explosion-proof alkaline battery characterized in that a super absorbent resin that absorbs alkaline electrolyte is stored in a space between the sealing gasket and the negative terminal plate, which communicates with the exhaust path.