Verfahren zur versorgung und spülung einer brennstoffzelle

Method of supplying and purging a fuel cell

Procédé d'alimentation et de purge d'une pile à combustible

Abstract

A method of supplying and purging a fuel cell (2) is provided, the method being implemented by means of a purging device (1) comprising: a supply duct (3) for supplying a reaction gas to the fuel cell (2), a purge duct (4) for purging the reaction gas sent to the fuel cell (2), a purge pump (6) suitable to make the reaction gas circulate in the purge duct (4), a shutdown duct (5) for shutting down the gas from the fuel cell (2), connected to the purge duct (4), a purge valve (7) placed upstream of the purge duct (4) and of the purge pump (6) and downstream of the fuel cell (2), an intermediate chamber (9) connected to the purge duct (4), to the supply duct (3) and to the shutdown duct (5) and positioned downstream of the purge valve (7), the purge pump (6) being suitable to put the intermediate chamber (9) in depression, the method comprising: a supply step (3) for supplying a reaction gas to the fuel cell (2), a purging step (4) for purging, at least in part, the reaction gas sent to the fuel cell (2) through activation of the purge pump (6), a depressurisation step for depressurising the intermediate chamber (9) by means of said purge pump (6) and of the purge valve (7), a second purging step, in which the purge valve (7) is open and the gases at least inside the fuel cell (2) are expelled through the shutdown duct (5) including on account of the intermediate, depressurised chamber (9).

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    Publication numberPublication dateAssigneeTitle