General Electric Company
DEGRADATION DETECTING DEVICE FOR FUEL CELL STACK, FUEL CELL SYSTEM AND MANAGING METHOD THEREOF

Abstract:

A degradation detecting device for a fuel cell stack includes one or more sensors, a first detection module, a second detection module and a detection fusion module. The one or more sensors measure signals of two adjacent fuel cell groups to obtain a measurement of each of the two adjacent fuel cell groups. The first detection module detects a rate of change of deviation between the two measurements and generates a first detection result based on the detected rate of change of deviation. The second detection module detects a trending divergence between the two measurements and generates a second detection result based on the detected trending divergence. The detection fusion module fuses the first detection result and the second detection result to generate a final detection result of the fuel cell stack. A fuel cell system having the degradation detecting device and a managing method thereof are also disclosed.