Patent ID: 7695837
Filing Date: 2010-04-13
Classification: H01M,Y02E

Abstract:
1. A fuel cell system comprising: a fuel cell having a fuel gas flow path and an oxidant gas flow path, the fuel cell generating electricity with a fuel gas and an oxidant gas supplied to the fuel gas flow path and the oxidant gas flow path, respectively; an oxidant gas supply means configured to supply the oxidant gas to the oxidant gas flow path; a pressure control means which is disposed downstream of the fuel cell and configured to control a pressure of the oxidant gas in the oxidant gas flow path; a pressure measuring means configured to measure the pressure of the oxidant gas in the oxidant gas flow path; and an operating condition control means configured to control the oxidant gas supply means and the pressure control means, wherein the pressure of the oxidant gas in the oxidant gas flow path is regulated to become equal or approximate to a target pressure by the pressure control means, and wherein when a pressure difference between the pressure measured by the pressure measuring means and the target pressure is larger than a predetermined pressure difference, the operating condition control means corrects operating conditions of the oxidant gas supply means based on an opening degree of the pressure control means, so that the measured pressure becomes the target pressure.