Patent ID: 6274267
Filing Date: 2001-08-14
Classification: H01M,Y02E,Y10T

Abstract:
A method of sealing electrochemical cells to reduce cell leakage from internal pressure, the method comprising:forming an amorphous polymer seal material, having the properties of low creep and beinginert, about a circular cover plate, creating:a sidewall portion extending radially outward a radial thickness from the cover plate perimeter,a seal flange extending from the sidewall portion and disposed against a cover plate first side,a shoulder extending from the sidewall portion and disposed against the cover plate second side,after the step of forming an amorphous polymer seal material about the cover plate, introducing the cover plate into a container with the seal flange oriented toward the exterior of the container;bending a wall flange portion of a container wall to capture the cover plate within the container, biasing the wall flange axially in the direction of the cover plate, thereby compressing the seal flange between the wall flange portion and the cover plate;such as to form a leak resistant interface between the seal flange and the cover plate.