Fuel cell spray humidifying system and control method

The invention discloses a fuel cell spraying and humidifying system and a control method, and the fuel cell spraying and humidifying system comprises a spraying and humidifying module which is used for humidifying air entering a stack through a spraying evaporation cavity and a water distribution part; a spray nozzle is arranged in the spray evaporation cavity, an air outlet of the spray evaporation cavity is connected with an intercooler, the intercooler is connected with a water distribution piece, the water distribution piece is connected with an air inlet of the galvanic pile, and a pressure sensor is arranged between the water distribution piece and the galvanic pile; the control module sends out a control signal to change the opening degree of the nozzle and adjust the spraying amount in real time. The control method comprises the following steps that the electric pile obtains the pile entering air humidity and then inputs an expected air humidity value into the control module, and the control module ca