Abstract

A new approach to the design of lead/acid batteries has been developed based upon the use of very thin,lead foil,current collectors and unique method for facilitating high current carrying capacity to and from external sources.The basic cell construction and the performance characteristics of valve regulated lead/acid design are described.Spiral wound cells with electrode/cast on strap configuration exhibit extremely high power output with a flat discharge voltage plateau at all normal currents.Conversely fast discharge of 10minutes,or less,to 100% capacity can be realized for the same reasons.Cycle life in deep discharge applications doesnot appear to be compromised by the thin foil used,as normal behavior is observed.Applications for this high power technology include portable power tools,UPS systems,electrically heated catalytic converters,repetitive pulse power applications,and electric and hybrid vehicles.

Keywords:Lead acid batteries,charging

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