Patent ID: 7638218
Filing Date: 2009-12-29
Classification: H01M,Y02E

Abstract:
1. A fuel cell system, comprising: a fuel cell stack that receives supplies of hydrogen and oxygen and generates electric power by an electrochemical reaction of the hydrogen and oxygen supplies; a hydrogen tank that stores hydrogen under a pressure of not lower than the atmospheric pressure, before the supply to the fuel cell stack; a hydrogen supply conduit that connects the hydrogen tank to the fuel cell stack; a pressure regulator that is provided in a pathway of the hydrogen supply conduit and utilizes the atmospheric pressure to reduce the pressure of the hydrogen supply from the hydrogen tank to the fuel cell stack; an atmospheric pressure measurement unit that measures the atmospheric pressure applied to the pressure regulator; and a control state change module that changes a preset control variable, which is involved in control of said fuel cell system, according to the measured atmospheric pressure, in order to reduce a potential effect of varying decompression performance of the pressure regulator with a variation of the atmospheric pressure.