Patent ID: 8129998
Filing Date: 2012-03-06
Classification: G01R,H01M,Y02E

Abstract:
1. A performance degradation analyzer of detecting performance degradation in a fuel cell, the performance degradation analyzer comprising: an AC impedance meter configured to measure an AC impedance of the fuel cell against at least a specific frequency; an operating state sensor configured to detect a parameter value of an internal resistance of the fuel cell from the measured AC impedance of the fuel cell, wherein the detected parameter value of the internal resistance of the fuel cell is at least one of an ohmic resistance value, diffusion resistance value or reactant resistance value of the fuel cell and indicates an operating state of the fuel cell; and a detector configured to compare a corresponding reference value of the detected parameter value of the internal resistance of the fuel cell with the detected parameter value of the internal resistance value of the fuel cell obtained from the measured AC impedance of the fuel cell, the detector further configured to detect performance degradation in the fuel cell based on a result of the comparison.