Patent ID: 7482093

Claim:
An electrochemical cell, which comprises: a) a casing comprising a first casing portion secured to a second casing portion to form an enclosure; b) an electrode assembly housed inside the casing and comprised of an anode comprising lithium and a cathode, wherein the anode comprises at least one anode lead electrically connected to the casing as its terminal and the cathode comprises at least one cathode lead electrically connected to a terminal lead insulated from the casing; c) an insulator comprising a first insulator portion partially housed inside a second, outer insulator portion to completely envelope the electrode assembly, wherein the second, outer insulator portion comprises a plurality of spaced apart raised ribs, each having a crest contacting an interior surface of the casing where the first casing portion is secured to the second casing portion with intermediate lands between the plurality of raised ribs contacting the first insulator portion opposite the location where the first casing portion is secured to the second casing portion; and d) an electrolyte provided in the casing to activate the electrode assembly.