Chemistry: electrical current producing apparatus – product – and – Plural concentric or single coiled electrode
Patent
1980-11-07
1982-06-01
Lefevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Plural concentric or single coiled electrode
429122, 429161, H01M 400
Patent
active
043328679
ABSTRACT:
An electrochemical cell utilizes a coil assembly formed by spirally winding negative and positive plates together with at least one separator therebetween. Each of the positive and negative plates is constituted by a main portion containing battery active material and an edge portion free of the active material. In the coil assembly, the edge portions of the respective plates protrude outwardly beyond the opposite edges of the separator and positioned on respective sides of the coil assembly. Positive and negative current collectors are made of a holeless nickel-plated steel sheet and welded to the edge portions of the respective plates by means of a plurality of welds.
REFERENCES:
patent: 3650842 (1972-03-01), Bougaran
patent: 4053687 (1977-10-01), Coibion et al.
Kawai Yuzuru
Tsuda Singo
Yamaga Minoru
LeFevour Charles F.
Matsushita Electric - Industrial Co., Ltd.
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