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Temperature control apparatus and method for high energy electrochemical cells

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
An apparatus and method provides cooling for electrochemical cells of an energy storage device. A number of electrochemical cells are arranged in a spaced apart relationship, each having opposing first and second planar surfaces and being subject to volumetric changes during charge and discharge cycling. A cooling bladder provides temperature control for the energy storage device. The cooling bladder is formed of a conformable thermally conducting material and includes inlet and outlet ports. The cooling bladder conforms to maintain contact with at least the first planar surface or the second planar surface of each cell during volumetric changes of the cells. A heat transfer medium passes between the inlet and outlet ports of the cooling bladder to control an operating temperature of the cells. The cooling bladder can be pressurized to maintain the cells of the energy storage device in a state of compression during charge and discharge cycling.
Ng, Chin-Yee (Maplewood, MN), Gullicks, Scott D. (Apple Valley, MN)
10/ 502,443
July 22, 2004
[0002] The Covemment of the United States of Ameinca has right in this invention pursuant to Cooperative Agreement DE-FG02-95EE50425 awarded by the U.S. Departent of Energy.