BELÜFTUNGSKANALDICHTUNGSANORDNUNG UND VERFAHREN ZUM ABDICHTEN EINER ELEKTROCHEMISCHEN ZELLE

摘要

A closure assembly and rupturable vent seal adapted for use in an electrochemical battery cell is disclosed. The vent seal includes a series of peripheral projections that can be folded to insure proper sealing of the vent without wrinkles or overlapping folded portions. Methods of accomplishing the invention are also contemplated.