Patent ID: 7867293

Claim:
A method for providing an electrochemical cell, comprising the steps of: a) contacting a cathode active material to a cathode current collector to form a cathode, wherein a portion of the cathode current collector is left uncovered by the cathode active material and at least a minor portion of the uncovered cathode current collector portion is provided with a plurality of perforations; b) electrically connecting a terminal pin to the cathode current collector at the uncovered current collector portion; c) contacting an anode active material to an anode current collector to form an anode; d) folding a separator as a continuous sheet back upon itself along a crease, thereby providing an upper separator portion aligned with a lower separator portion; e) housing the cathode between the upper and lower separator portions; f) securing the upper separator portion to the lower separator portion through the uncovered perforations of the cathode current collector at an intermediate location parallel to the crease so that the upper and lower separator portions contact each other at the plurality of perforations and along an aligned peripheral edge, thereby forming a first envelope portion housing the cathode and a second envelope portion; g) housing the anode in the second envelope portion; h) folding the separator so that the anode is aligned in an overlying relationship with the cathode housed in the first envelope portion, wherein the anode and cathode are prevented from contacting each other by the separator; i) winding the aligned anode and cathode into a jellyroll electrode assembly; j) housing the jellyroll electrode assembly in a casing, wherein the terminal pin is electrically insulated from the casing connected to the anode as its terminal; and k) activating the anode and the cathode with an electrolyte provided in the casing.