Method and apparatus for monitoring fuel cell voltages

Details Method and apparatus for monitoring fuel cell voltages Method and apparatus for monitoring fuel cell voltages

G - Physics

01

R

G01R 31/36 (2006.01)

Patent

CA 2508517

A system and method for monitoring cell voltages for a plurality of electrochemical cells connected in series forming a cell stack. The method includes dividing the cells into at least two cell groups, measuring the voltage across each cell group and estimating the minimum cell voltage for each group based on the average cell stack voltage and an estimated number of deficient cells in each group. The lowest minimum cell voltage for the entire cell stack is then determined.

L'invention concerne un système et un procédé permettant de contrôler les tensions d'une pluralité de cellules électrochimiques connectées en série et formant un empilement de cellules. Le procédé consiste à diviser les cellules en au moins deux groupes de cellules, à mesurer la tension qui traverse chaque groupe de cellules et à estimer la tension de cellule minimale pour chaque groupe sur la base de la tension moyenne d'un empilement de cellules et d'un nombre estimé de cellules défaillantes dans chaque groupe. Ce procédé permet de déterminer la tension de cellule minimale pour l'ensemble des cellules de l'empilement de cellules.

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