Patent ID: 6475666
Filing Date: 2002-11-05
Classification: H01M,Y02E,Y02P

Abstract:
A cell for delivering high current pulses and rapidly recovering the cell open circuit voltage comprising a casing, an alkali metal anode means in said casing, a cathode means in said casing, an electrolyte in said casing and between and in contact with said anode means and said cathode means, means for providing electrical connection to said anode means, means for providing electrical connection to said cathode means, and means for separating said anode means and said cathode means, said separating means comprising the combination of a polyethylene component operatively on said anode means and a polypropylene component operatively on said cathode means, said polyethylene component and said polypropylene component being separate and distinct from each other, said polyethylene component when beginning to melt in response to a rise in cell temperature to the melting point thereof serving to stop or substantially block ion flow therethrough and said polypropylene component serving to maintain structural integrity of said separating means so as to prevent formation of gaps in said separating means and thereby maintain mechanical isolation of said anode means and said cathode means.