Fuel cell anomaly detection method and apparatus

Details Fuel cell anomaly detection method and apparatus Fuel cell anomaly detection method and apparatus

H - Electricity

01

M

H01M 8/04 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2454782

A respective bipolar junction transistor is coupled across pairs of fuel cells in a fuel cell stack to monitor the voltage across each fuel cell pairs for a drop in voltage below a threshold voltage. A respective optoisolator coupled to each of the transistors produces a digital signal corresponding to the status of the respective pair of fuel cells. An "AND" circuit produces a single digital signal corresponding to the status of one or more pairs of fuel cells.

Un transistor à jonctions bipolaire est respectivement couplé entre les paires de piles à combustible d'un empilement de piles à combustible pour vérifier la tension qui traverse chaque paire de piles à combustible et surveiller toute chute de tension en-deçà d'une tension seuil. Un opto-isolateur respectif couplé à chaque transistor produit un signal numérique correspondant à l'état de la paire respective de piles à combustible. Un circuit "ET" produit un seul signal numérique correspondant à l'état d'au moins une paire de piles à combustible.

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