Patent ID: 7704619
Filing Date: 2010-04-27
Classification: B60L,H01M,Y02E,Y02T

Abstract:
1. A fuel cell system comprising: a fuel cell having a stack composed of stacked cells that generate electrical power from anode gas and cathode gas; a cell voltage measuring device connected to the cells to measure voltages of the cells, the cell voltage measuring device outputting a first predetermined value as a measurement value when the voltage of the cell being measured is at or below a detection limit and outputting the voltage of the cell as a measurement value when the voltage of the cell is detectable; a stack voltage measuring device connected to the stack that measures the voltage of the stack; and a control unit programmed to restrict a current flowing through the fuel cell when a difference between a sum of each measurement value of each cell measured by the cell voltage measuring device and the voltage of the stack measured by the stack voltage measuring device exceeds a second predetermined value.