Patent ID: 7807280
Filing Date: 2010-10-05
Classification: B60L,H01M,Y02E,Y02T,Y10T

Abstract:
1. A fuel cell power system comprising: a fuel cell for supplying electric power to a driving motor for driving a vehicle; an electric power storage device for assisting supply of electric power to the driving motor; a connecting device, disposed between an output end of said fuel cell and said electric power storage device, for connecting an output end of the fuel cell and said electric power storage device; a first detector which detects a terminal voltage of the fuel cell; a second detector which detects a terminal voltage of the electric power storage device; and a control device for controlling said connecting device to connect or disconnect said fuel cell with the electric power storage device; wherein said fuel cell is connected to said electric power storage device, said control device detects a voltage difference by subtracting the terminal voltage of the fuel cell from the terminal voltage of the electric power storage device, and when the voltage difference is larger than a predetermined value, said control device controls the connecting device so as to limit an amount of a current flowing from said fuel cell to said electric power storage device.