Fire suppression and fire extinguishing device for power battery box of fuel cell vehicle

The utility model relates to the field of large fuel vehicles, in particular to a fire suppression and fire extinguishing device for a power battery box of a fuel battery vehicle, which comprises a whole vehicle hydrogen gas cylinder, a primary pressure reducing valve is connected outside the whole vehicle hydrogen gas cylinder, and a secondary pressure reducing valve is connected at the tail end of the primary pressure reducing valve. The tail end of the secondary pressure reducing valve is connected with a main electromagnetic valve, one end of the main electromagnetic valve is provided with a main controller, and the tail end of the electromagnetic valve 1 and the tail end of the electromagnetic valve N are both communicated with an electric box. According to the device, the fuel and inhibitor sharing technology is adopted, so that integration and light weight are achieved, and air in the electric box is rapidly exhausted through the rapid electric box gas replacement technology; according to the device, t