A HYDROGEN SAFETY EXHAUSTING SYSTEM OF A FUEL CELL-VEHICLE

摘要

A hydrogen safety exhausting system of a fuel cell vehicle is provided to prevent outbreak of fire by controlling the density of the non-reacted hydrogen which is remained in a fuel cell system into 4% or lower. A hydrogen safety exhausting system of a fuel cell vehicle includes a fuel cell stack, a humidifier unit(14), an exhaust line, and a hydrogen exhaust tank. The fuel cell stack has a plurality of fuel cells for converting chemical energy into electrical energy. The humidifier unit humidifies the fuel cell stack. The exhaust line is equipped with an exhaust valve for discharging non-reacted hydrogen discharged from the fuel cell stack. The hydrogen exhaust tank is arranged on the exhaust line, and mixes the non-reacted hydrogen with air to the density lower than the level of density causing firing and discharges the mixture.