Battery coil construction

Details Battery coil construction Battery coil construction

H - Electricity

01

M

319/104

H01M 4/00 (2006.01) H01M 2/26 (2006.01)

Patent

CA 1150348

BATTERY COIL CONSTRUCTION Abstract of the Disclosure The present invention relates to an electrochemical cell which 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 solid nickel- plated steel sheet and welded to the edge portions of the respective plates by means of a plurality of welds.

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