Abstract: An apparatus for predicting a life span of a fuel cell includes a processor configured to collect and store a stack current and a stack voltage of a fuel cell stack, define prediction model equations based on stack currents and stack voltages stored at different time points, correct the prediction model equations based on constant change states of the defined prediction model equations, and generate a life span prediction model by using the corrected prediction model equations, and predict a stack current and a stack voltage of the fuel cell stack after a specific time period based on the generated life span prediction model.

Abstract: Disclosed are a method and an apparatus for adjusting a partial pressure of oxygen that is supplied to a fuel cell system. The oxygen partial pressure may be adjusted by primarily increasing an SR of air and by secondarily increasing a closing ratio of an opening and closing valve when a concentration of oxygen in the air is detected to be reduced. The oxygen partial pressure adjusting device of a fuel cell system includes: an air supply; a fuel supply; an oxygen sensor that is installed in an air supply line and detect a concentration of oxygen; an opening and closing valve and adjust an air supply pressure; and a controller that adjusts a partial pressure of oxygen using the opening and closing valve and a concentration of oxygen that is detected by the oxygen sensor.

Abstract: Disclosed is a device and method for stacking a fuel cell stack, which enables automated accurate stacking of components constituting the fuel cell stack by using a phosphor coated thereon. Accordingly, when a membrane-electrode assembly (MEA), a separation plate, etc. are automatically stacked in sequence they are coated with phosphor at a predetermined position on each of the MEA, the separation plate, etc. A phosphor sensor is then positioned and configured to automatically determine whether or not the MEA and separator have been accurately stacked by detecting the presence of phosphor on the stacked MEA and separator plate respectively.

Abstract: Disclosed is a device and method for stacking a fuel cell stack, which enables automated accurate stacking of components constituting the fuel cell stack by using a phosphor coated thereon. Accordingly, when a membrane-electrode assembly (MEA), a separation plate, etc. are automatically stacked in sequence they are coated with phosphor at a predetermined position on each of the MEA, the separation plate, etc. A phosphor sensor is then positioned and configured to automatically determine whether or not the MEA and separator have been accurately stacked by detecting the presence of phosphor on the stacked MEA and separator plate respectively.