Method of manufacturing a battery containing a non-circular spir

Details Method of manufacturing a battery containing a non-circular spir Method of manufacturing a battery containing a non-circular spir

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.

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