Method and apparatus for preventing cell reversal in a fuel...

Details Method and apparatus for preventing cell reversal in a fuel... Method and apparatus for preventing cell reversal in a fuel...

H - Electricity

01

M

H01M 8/04 (2006.01) G01R 31/36 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2326209

A diagnostic method and apparatus for detecting cell reversal in a fuel cell stack. The inventive method and apparatus determines the average cell or cluster voltage change of all of the cells or clusters in the stack over a time period and the individual cell or cluster voltage change during the same time period and generates a difference between the average cell or cluster voltage change and the individual cell or cluster voltage change which is compared with a reference acceptable difference. The method and apparatus generate an output indicating impending cell reversal if the voltage of an individual cell or cluster changes significantly more or less than the average voltage change of the rest of the cells or clusters in the stack.

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