Fuel Cell System, Fuel Cell Vehicle, and Method for Controlling Fuel Cell System

摘要

A fuel cell system installed in a vehicle includes a fuel cell that supplies power to a motor that drives the vehicle, a pump that supplies oxygen to the fuel cell, an accelerator position detector that detects an accelerator depression amount of the vehicle, and a controller that calculates required generated power of the fuel cell and required driving power of the pump, based on the accelerator depression amount. When a preset condition of causing a sharp drop in the calculated required generated power is satisfied, the controller calculates the required driving power in such a mariner that a drop rate of the required driving power becomes higher than a drop rate of the calculated required generated power, sets a lower limit to the calculated required driving power, and drives the pump in accordance with the lower limit when the required driving power is lower than the lower limit.

主权项

1. A fuel cell system installed in a vehicle, the fuel cell system comprising:
a fuel cell that supplies power to a motor that drives the vehicle; a pump that supplies oxygen to the fuel cell; an accelerator position detector that detects an accelerator depression amount of the vehicle; and a controller that calculates required generated power of the fuel cell and required driving power of the pump, based on the accelerator depression amount, wherein when a preset condition of causing a sharp drop in the calculated required generated power is satisfied, the controller calculates the required driving power in such a manner that a drop rate of the required driving power becomes higher than a drop rate of the calculated required generated power, sets a lower limit to the calculated required driving power, and drives the pump in accordance with the lower limit when the calculated required driving power is lower than the lower limit.