Method and apparatus for discharging used operating media of...

H - Electricity – 01 – M

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

Patent

CA 2749083

The invention relates to a method and to a device for discharging used operating media of a fuel cell (1) in a fuel cell system (20), at least some of which are explosive, comprising a sensor unit (30) for examining the operating media discharged from an operating space (27). In order to discharge the used operating media from the fuel cell system independently of the operation of the fuel cell system and taking safety regulations into account, a mixing zone (32) is provided for mixing the operating media with a scavenging medium (28) to obtain waste air (33), wherein the operating space (27) is closed by a fan (29), and the sensor unit (30) is disposed downstream of the mixing zone (32), viewed in the flow direction of the waste air (33).

L'invention concerne un procédé et un dispositif pour évacuer les agents de fonctionnement usés et, au moins en partie, explosifs d'une pile à combustible (1) d'un système de piles à combustible (20), comprenant une unité de détection (30) pour soumettre à une vérification les agents de fonctionnement évacués d'un compartiment de fonctionnement (27). Le but de l'invention est d'évacuer les agents de fonctionnement usés du système de piles à combustible quel que soit le mode fonctionnement du système de piles à combustible et en respectant les consignes de sécurité. A cet effet, une zone de mélange (32) est destinée au mélange des agents de fonctionnement et d'un agent de balayage (28) pour obtenir un air sortant (33), le compartiment de fonctionnement (27) étant fermé par un ventilateur (29), et l'unité de détection (30) étant disposée en aval de la zone de mélange (32), vu dans le sens d'écoulement de l'air sortant (33).

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