Button cell with retaining ring for anode

Details Button cell with retaining ring for anode Button cell with retaining ring for anode

1997-12-09

2000-05-09

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Cell enclosure structure, e.g., housing, casing, container,...

429171, 429185, H01M 208

Patent

active

060601949

ABSTRACT:
The invention relates to a rechargeable button cell, which contains negative and positive electrodes in the form of tablets separated by a separator and an alkaline electrolyte in a casing which is formed from a lower part in the form of a cup and an upper part in the form of a lid which fits therein, the casing parts being sealed in a gas-tight manner by swaging or crimping with the interposition of a sealing ring. The button cells according to the invention have a sealing ring (4) which has on the edge pointing into the button cell at least 3 retaining tabs (9) which hold and center the electrode tablet (3) located in the casing upper part (1). The method according to the invention for manufacturing the button cell is distinguished by separate prior assembly of the casing lower part with the positive electrode and the casing upper part with the negative electrode.

REFERENCES:
patent: 4302517 (1981-11-01), Dzlak
patent: 5725967 (1998-03-01), Tuttle
patent: 5843597 (1998-12-01), Getz
"Rechargeable Batteries in Japan," by Y. Miyake and A. Kozawa, JEC Press Inc. 1977, 3 pages. (No Month).

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