Patent ID: 8293420
Filing Date: 2012-10-23
Classification: H01M,Y02E

Abstract:
1. A fuel cell vehicle comprising: a fuel cell stack that generates power by using an oxidizing gas and a fuel gas; an exhaust pipe that releases the oxidizing gas and the fuel gas from the fuel cell stack to outside; a pressure-adjusting valve that is provided between a cathode outlet of the fuel cell stack and the exhaust pipe and adjusts an oxidizing gas pressure inside the fuel cell stack correspondingly to adjustment of an opening degree; a pressure-adjusting valve opening degree control unit that performs feedback control of an opening degree of the pressure-adjusting valve so as to maintain the oxidizing gas pressure inside the fuel cell stack at an operation directed pressure that is directed to the fuel cell stack; and a flood estimation signal output unit that outputs a flooding estimation signal indicating that the exhaust pipe is flooded when an opening degree difference that is a difference between the opening degree of the pressure-adjusting valve and a preset opening degree corresponding to the operation directed pressure is equal to or greater than a preset threshold opening degree difference.