Hydrogen leakage monitoring device of hydrogen energy fuel cell

The utility model provides a hydrogen leakage monitoring device of a hydrogen energy fuel cell, and relates to the technical field of hydrogen energy fuel cells, the hydrogen leakage monitoring device of the hydrogen energy fuel cell comprises a box body, a cell body is fixedly arranged on the inner wall of the box body, one side of the box body is provided with an air inlet hole, and the other side of the box body is provided with an air outlet hole. During use, the exhaust fan can drive leaked hydrogen to be exhausted from the air outlet hole, the monitor body can detect the leaked hydrogen and feed the leaked hydrogen back to the single chip microcomputer, the single chip microcomputer can control the exhaust fan to be closed and start the rotation driving device, and the rotation driving device drives the exhaust fan to rotate. The rotating driving device can drive the two blocking plates to move through transmission of the rotating shaft, the two gears and the two racks, so that the two blocking plates m