Patent ID: 7892688
Filing Date: 2011-02-22
Classification: H01M,Y02E

Abstract:
1. A process for controlling a fuel cell system comprising a high-pressure tank which contains hydrogen to be discharged, the contained hydrogen in the high-pressure tank being depressurized and cooled with the hydrogen being discharged, a fuel cell and a supply device having a function for isolating or depressurizing the hydrogen discharged from the high pressure tank, the supply device including a member for isolating the hydrogen discharged from the high pressure tank based on a performance assurance temperature, said process comprising: sensing a temperature of gas discharged from the high pressure tank or gas in the high pressure tank; determining whether or not the sensed temperature is equal to/less than a predetermined limit value which is determined based on the performance assurance temperature; and limiting an output of the fuel cell and controlling an amount of the hydrogen discharged from the high pressure tank, based on the sensed temperature, if the sensed temperature is determined to be equal to/less than the predetermined limit value, so that the sensed temperature does not fall below the performance assurance temperature of the supply device.