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公开(公告)号：EP0810677B1
公开(公告)日：2000-03-15
申请号：EP96941834.2
申请日：1996-12-11
发明人： KOZUKI, Kiyomi , NISHIMURA, Yoshiko , IIDA, Rikio , FUJII, Takabumi , SAITO, Kazuo , KUNOIKE, Naoto , TAKAI, Tohru , MASUMOTO, Kenjin , NIWA, Yukimasa
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/34 , H01M2/348 , H01M6/10
摘要： A thin battery in which safety is assured by cutting off the electrical connection when the internal pressure of the battery rises. An upper valve and lower valve are arranged with an electrically insulating gasket in between. Part of the upper valve is recessed and, at the same time, a small hole and a thin-wall section connected to the small hole are provided in part of the lower valve. The strength of the lower valve is made higher than that of the upper valve by welding the part of the lower value surrounded by the small hole and the thin-wall section to the bottom face of the recessed section of the upper valve.
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公开(公告)号：EP0810677A1
公开(公告)日：1997-12-03
申请号：EP96941834.2
申请日：1996-12-11
发明人： KOZUKI, Kiyomi , NISHIMURA, Yoshiko , IIDA, Rikio , FUJII, Takabumi , SAITO, Kazuo , KUNOIKE, Naoto, 4-3-6-101, Kirehigashi , TAKAI, Tohru , MASUMOTO, Kenjin , NIWA, Yukimasa
IPC分类号： H01M2/12
CPC分类号： H01M2/345 , H01M2/1235 , H01M2/34 , H01M2/348 , H01M6/10
摘要： To enhance the safety of battery, in a thin type battery, by securely cutting off electric connection when the internal pressure of the battery is raised.
An upper valve disc and a lower valve disc are disposed through an electric insulating gasket, a part of the upper valve disc is formed in a recess shape, and a tiny hole and a continuous thin wall part are formed in a part of the lower valve disc, and the bottom of the recess part of the upper valve disc and the portion enclosed by the tiny hole and thin wall part of the lower valve disc are fused, and the structure is constituted so that the strength of the lower valve disc may be greater than the strength of the upper valve disc.
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