Apparatus for controlling hydrogen supply of fuel cell system and method for controlling the same

摘要

The present invention provides an apparatus for controlling hydrogen supply of a fuel cell system and a method for controlling the same. The apparatus includes a jet pump, a proportional control solenoid valve, and a controller. The jet pump is disposed at the side of an inlet of a fuel cell stack and performs supply and recirculation of hydrogen into the fuel cell stack. The proportional control solenoid valve is connected to a hydrogen supply line and fluidly communicates with a nozzle inlet of the jet pump to control the hydrogen supply to the jet pump. The controller controls an operation of the proportional control solenoid valve according to a power of the fuel cell system. Here, the controller controls the operation of the proportional control solenoid valve according to a pulse flow control method at a low power section in which a current power is lower than a predetermined reference power.

主权项

1. An apparatus for controlling hydrogen supply of a fuel cell system, comprising:
a jet pump disposed and directly connected to an inlet of a fuel cell stack and configured to supply and recirculate hydrogen into the fuel cell stack; a proportional control solenoid valve connected to a hydrogen supply line and fluidly communicating with a nozzle inlet within the jet pump to control the hydrogen supply to the jet pump; and a controller connected with the proportional control solenoid valve, wherein the controller is programmed to control an operation of the proportional control solenoid valve based on an amount of power requested from the fuel cell system, wherein the controller controls the operation of the proportional control solenoid valve by repeatedly turning on and off the proportional control solenoid valve during a low power section in which a current power is less than a predetermined reference power.