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Method for transferring thermal energy and electrical current in thin-film electrochemical cells

United States Patent

May 27, 2003
View the Complete Patent at the US Patent & Trademark Office
An improved electrochemical generator is disclosed. The electrochemical generator includes a thin-film electrochemical cell which is maintained in a state of compression through use of an internal or an external pressure apparatus. A thermal conductor, which is connected to at least one of the positive or negative contacts of the cell, conducts current into and out of the cell and also conducts thermal energy between the cell and thermally conductive, electrically resistive material disposed on a vessel wall adjacent the conductor. The thermally conductive, electrically resistive material may include an anodized coating or a thin sheet of a plastic, mineral-based material or conductive polymer material. The thermal conductor is fabricated to include a resilient portion which expands and contracts to maintain mechanical contact between the cell and the thermally conductive material in the presence of relative movement between the cell and the wall structure. The electrochemical generator may be disposed in a hermetically sealed housing.
Rouillard; Roger (Beloeil, CA), Domroese; Michael K. (South St. Paul, MN), Hoffman; Joseph A. (Minneapolis, MN), Lindeman; David D. (Hudson, WI), Noel; Joseph-Robert-Gaetan (St-Hubert, CA), Radewald; Vern E. (Austin, TX), Ranger; Michel (Lachine, CA), Sudano; Anthony (Laval, CA), Trice; Jennifer L. (Eagan, MN), Turgeon; Thomas A. (Fridley, MN)
3M Innovative Properties Company (St. Paul, MN), Hydro-Quebec Corporation (Montreal, CA)
09/ 609,444
July 3, 2000
GOVERNMENT LICENSE RIGHTS 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.