METHOD AND APPARATUS FOR ADJUSTING OXYGEN PRESSURE OF FUEL CELL SYSTEM

摘要

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.

主权项

1. An oxygen partial pressure adjusting device of a fuel cell system, comprising:
an air supply configured to supply or exhaust air; a fuel supply configured to supply or exhaust a fuel gas; a fuel cell stack configured to generate electricity using the supplied air and the supplied fuel gas; an oxygen sensor installed in an air supply line that connects the air supply and the fuel cell stack and configured to detect a concentration of oxygen; an opening and closing valve installed in an air manifold configured to exhaust air in the air supply to adjust an air supply pressure; and a controller configured to adjust a partial pressure of oxygen using the opening and closing valve and a concentration of oxygen detected by the oxygen sensor.