HYDROGEN SUPPLY AND VENT APPARATUS OF FUEL CELL SYSTEM

摘要

The present invention relates to a hydrogen supply and vent device for a fuel cell system, comprising: a low pressure regulator for maintaining a pressure of hydrogen supplied from a hydrogen tank at a low pressure; a humidifier installed at a rear end of the low pressure regulator; and a stack provided at a rear end of the humidifier. A fuel cell system comprising: a first valve disposed between the hydrogen tank and a low pressure regulator; A second valve for recycling hydrogen output from the stack to the humidifier side; A pressure sensing unit configured to sense a pressure of hydrogen applied to the humidifier side through the second valve; A power control unit which opens the first valve to supply initial hydrogen to the low pressure regulator when the vehicle start-up signal is input, and controls an opening / closing state of the first valve according to a sensing value from the pressure sensing unit; A plurality of vent valves installed at an output end of the stack and venting through respective tubes at a rear end thereof; And a cell voltage measuring unit for measuring a behavior of a voltage indicating the performance of each unit cell of the stack and independently opening the plurality of vent valves according to the measured value.;Fuel Cell, Check Valve, Stack, Cell Voltage, Vent