ABNORMALITY DETECTING METHOD FOR FUEL CELL AND ABNORMALITY DETECTING DEVICE FOR FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide an abnormality detecting method for a fuel cell and an abnormality detecting device for the fuel cell capable of quickly detecting the abnormality on line when it is produced in any cell within a fuel cell stack. SOLUTION: This abnormality detecting method for the fuel cell is such that measured voltage V of cell voltage detected every n cells in a fuel cell stack is compared with the reference voltage VR selected so as to satisfy the following inequality, and when the measured voltage V is lowered than the reference voltage VR it is determined that the abnormality is produced in the cell of the fuel cell stack. nPVR=(n-1)0+L Wherein 0; open circuit voltage L; breakdown voltage P; the minimum voltage in rated region of the fuel cell (PL) n; the number of measured pitches.