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Rechargeable lithium-ion cell

United States Patent

December 28, 1999
View the Complete Patent at the US Patent & Trademark Office
The invention relates to a rechargeable lithium-ion cell, a method for its manufacture, and its application. The cell is distinguished by the fact that it has a metallic housing (21) which is electrically insulated internally by two half shells (15), which cover electrode plates (8) and main output tabs (7) and are composed of a non-conductive material, where the metallic housing is electrically insulated externally by means of an insulation coating. The cell also has a bursting membrane (4) which, in its normal position, is located above the electrolyte level of the cell (1). In addition, the cell has a twisting protection (6) which extends over the entire surface of the cover (2) and provides centering and assembly functions for the electrode package, which comprises the electrode plates (8).
Bechtold; Dieter (Bad Vilbel, DE), Bartke; Dietrich (Kelkheim, DE), Kramer; Peter (Konigstein, DE), Kretzschmar; Reiner (Kelkheim, DE), Vollbert; Jurgen (Hattersheim, DE)
Varta Batterie Aktiengesellschaft (Hannover, DE)
09/ 048,607
March 26, 1998
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The Government of the United States of America has rights in this invention pursuant to Cooperative Agreement No. DE-FC02-91CE50336 awarded by the U.S. Department of Energy.