VALVE OPENING/CLOSING DETECTION DEVICE FOR FUEL CELL SYSTEM AND METHOD THEREFOR

The present disclosure relates to a valve opening/closing detection device for a fuel cell system and a method therefor and provides a valve opening/closing detection device for a fuel cell system, which detects a current (current waveform) supplied to a valve of the fuel cell system, determines a differential value of the current, detects opening/closing of the valve on the basis of a fluctuation range of the differential value, and thus may accurately detect an opening time point and a closing time point of the valve without a separate sensor, and a method therefor. To this end, the present disclosure may include a current sensor that measures a current applied to a valve, and a controller that determines a differential value of the current and detects opening/closing of the valve on the basis of a fluctuation range of the differential value.