Metal working – Method of mechanical manufacture – Electrical device making
Patent
1996-06-03
1998-05-05
Kalafut, Stephen
Metal working
Method of mechanical manufacture
Electrical device making
429 94, H01M 1004
Patent
active
057467803
ABSTRACT:
A method of manufacturing a battery containing a non-circular spiral electrode unit forms a true circular or elliptical cylindrical electrode unit by winding positive and negative electrode plates with a micro-porous polymer film separator disposed between the two electrode plates. The cylindrical electrode unit is pressed from both sides into a non-circular spiral electrode unit and inserted into an external case to form a battery. When the cylindrical electrode unit is pressed into a non-circular spiral electrode unit, the separator gurley value of the pressed non-circular spiral electrode unit is arranged to be in the range from 110% to 150%, where the separator gurley value of the cylindrical electrode unit is 100%.
REFERENCES:
patent: 418483 (1889-12-01), Woolf
patent: 3377201 (1968-04-01), Wagner et al.
patent: 5336276 (1994-08-01), Pensabene et al.
patent: 5344724 (1994-09-01), Ozaki et al.
patent: 5443925 (1995-08-01), Machida et al.
patent: 5478594 (1995-12-01), Frye et al.
Amazutsumi Toru
Fukuda Hideki
Narukawa Satoshi
Tamaki Hiyoshi
Kalafut Stephen
Sanyo Electric Co,. Ltd.
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