Water drainage device for fuel cell, fuel cell system, moving body and control method of fuel cell system
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United States of America Patent
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Sep 15, 2020
Grant Date -
May 19, 2016
app pub date -
Nov 10, 2015
filing date -
Nov 14, 2014
priority date (Note) -
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Abstract
A technique that suppresses excessive water drainage from a fuel cell is provided. A water drainage device that drains water from inside of a fuel cell includes: a purge gas supply system; an operation unit; a water drainage controller; and a water content acquirer. The operation unit receives a water drainage command from a water drainage switch configured to control execution of a purge process by the purge gas supply system. When the water content obtained by the water content acquirer is equal to or lower than a predetermined value, the water drainage controller performs either one of: (i) invalidating the received water drainage command; and (ii) changing a processing condition of the purge process to decrease an amount of water drained by the purge process, compared with an amount of water drainage when the obtained water content is higher than the predetermined value.
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