Prismatic storage battery or cell with coiled winding
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United States of America Patent
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-
Feb 20, 2001
Grant Date -
N/A
app pub date -
Mar 25, 1999
filing date -
Mar 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Prismatic battery including a metal container (1) within which is arranged a non circular spiral winding (2) of at least one composite strip (10) including an anode (2a) and a cathode (2c), separated by porous separators (2b) impregnated by an electrolyte, said container (1) being sealed at its upper portion by a cover (4). The spiral winding (2) is formed around a rigid spool (20) including an upper flange (21), having the dimensions of the opening of the cavity (16), and a lower flange (22), having the inner dimensions of the bottom (15), said flanges being joined by a central neck (24) and, on either side, by two lateral necks (23, 25), said necks (23, 24, 25) delimiting two openings (26a, 26c) in the median portion of the spool (20) and a free space (27) at its periphery to accommodate the winding (2).
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