Battery Cell Including Separator Being Thermal Shrunk

摘要

The present invention relates to a battery cell in which an electrode assembly including a positive electrode, a negative electrode, and a separator is embedded in a battery case, wherein the separator in the electrode assembly includes a separator surplus protruding outward from an outer circumferential end of the electrode. Among the outer circumferential surfaces of the, at least one outer circumferential surface of the remaining outer circumferential surfaces other than the outer circumferential surface on which the electrode terminals are located, the separator excess portion relates to the battery cell, characterized in that the close contact with the outer peripheral end of the electrode by heat shrink.