Method for making a cell

Details Method for making a cell Method for making a cell

1995-12-15

1997-08-19

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429194, 296231, H01M 404

Patent

active

056586833

ABSTRACT:
A cell comprising a casing, a roll electrode element accommodated in said casing, and an electrolyte filled into the casing, the roll electrode element being composed of at least one sheet-like positive electrode, at least one sheet-like negative electrode and at least one film separator which are arranged alternately in an overlapped relation to each other such that the sheet-like positive electrode is brought into contact with the sheet-like negative electrode through the separator film, to form an electrode laminate, wherein the electrode laminate is wound around a core having an approximately rhombic shape in section to form a roll having a multi-layered structure and, after removal of the core, the roll of the electrode laminate is compressed to obtain the roll electrode element having an ellipsoidal shape in section.

REFERENCES:
patent: 418483 (1889-12-01), Woolf
patent: 3377201 (1968-04-01), Wagner et al.
patent: 5344724 (1994-09-01), Ozaki et al.
patent: 5434017 (1995-07-01), Berkowitz et al.
patent: 5439760 (1995-08-01), Howard et al.
patent: 5443925 (1995-08-01), Machida et al.

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