Patent ID: 9455462
Filing Date: 2016-09-27
CPC Classification: H01M,Y02B,Y02E

Claim Text:
1. A method for deactivating a fuel cell system, the method comprising: performing low electric-power generation prior to oxygen-consumption electric-power generation in a case where a state of charge in an electricity storage device provided in the fuel cell system is larger than a predetermined value when a stop switch provided in the fuel cell system is operated, the electricity storage device being provided to store electricity generated in a fuel cell provided in the fuel cell system, the stop switch being provided to be operated when electric-power generation in the fuel cell is to be stopped, the low electric-power generation causing a net output to be a negative value, the net output comprising a value obtained by subtracting a power consumption of an auxiliary device actuated to obtain an amount of electric power generated by the fuel cell from the amount of electric power generated by the fuel cell, the state of charge in the electricity storage device being reduced to the predetermined value by compensating for a negative net output by discharging electricity from the electricity storage device; and performing the oxygen-consumption electric-power generation in which oxygen remaining in a cathode system of the fuel cell is consumed to reduce oxygen concentration within the cathode system.