Patent ID: 9034532
Filing Date: 2015-05-19
Classification: H01M,Y02E

Abstract:
1. A method for cold starting a fuel cell vehicle, the method comprising: supplying reactant gases to a fuel cell stack to generate a stack current; and simultaneously performing a motoring process to operate the fuel cell vehicle by applying a portion of the stack current generated in the fuel cell stack to a drive motor and performing a heating process to warm up the fuel cell stack by applying any remaining available stack current to a heater for heating coolant, wherein the fuel cell stack, the drive motor and the heater are all connected electrically in parallel, wherein the method further comprises preventing valves of a fuel cell system from freezing by applying a valve heater while the fuel cell is turned off before the cold starting, such that the valves of the fuel cell system are immediately opened, wherein the performing of the motoring process and the performing of the heating process to warm up the fuel cell stack are performed simultaneously when cold starting the fuel cell vehicle.