Patent ID: 9368850
Filing Date: 2016-06-14
CPC Classification: B60L,B60W,H01M,Y02E,Y02T

Claim Text:
1. A fuel cell system comprising: a fuel cell which generates a power by an electrochemical reaction of a fuel gas and an oxidant gas; a motor which is configured to be driven and to generate a regenerative power by receiving the supply of a power; an inverter which converts a direct-current power output from the fuel cell into an alternate-current power to supply the power to the motor, thereby controlling the driving of the motor; a power storage connected to the motor in parallel with the fuel cell, and configured to be charged with the power generated by the fuel cell and the regenerative power generated by the motor and configured to discharge the charged powers to the motor; a rotation number detector which detects the rotation number of the motor; and a controller which determines whether or not to allow the stop of the control by the inverter with respect to the motor based on the present rotation number of the motor, wherein the controller compares the present rotation number of the motor with a threshold value which varies in accordance with operation modes of the fuel cell, to perform the determination, the operation modes include a usual operation mode associated with a rotation number threshold value N when the present rotation number of the motor is smaller than the rotation number threshold value corresponding to the present operation mode of the fuel cell, the controller allows the stop of the control by the inverter with respect to the motor.