Ultrasonic humidification and heating device of proton exchange membrane fuel cell

The invention discloses an ultrasonic humidification and heating device of a proton exchange membrane fuel cell. The ultrasonic humidification and heating device comprises a humidification and heatingpart, a fuel supply part and an ultrasonic driving part, wherein the humidification and heating part comprises a shell and a temperature-humidity control system, a cavity is arranged in the shell andis provided with a top opening, a porous liquid absorption ventilation core is arranged in the cavity, a porous metal fiber plate is laid in the cavity in an upper end of the porous liquid absorptionventilation core, a piezoelectric ceramic sheet is arranged on the porous metal fiber plate, the cavity is partitioned to a heating cavity and a liquid absorption cavity by a partition plate, the liquid absorption cavity is connected with the fuel supply part, a fiber bragg grating temperature-humidity sensor is arranged in the heating cavity and is connected with a temperature-humidity control system, and the temperature-