Thin profile battery with improved separator and gasket construction

摘要

A button-type battery has an anode, a cathode, and an electrolyte encased with two terminal housing members wherein at least one of the housing members is substantially planar. The terminal housing members have respective peripheries that are crimped together to form a fluid-tight seal. An insulating gasket is provided between the peripheries to electrically insulate the two terminal housing members. A porous separator physically separates the anode and cathode and extends between the terminal housing member peripheries at least partially into the fluid-tight seal. According to one aspect, the separator overlaps the gasket in the seal. According to another aspect, the separator and gasket are formed of a single, integral piece of material.