Ultrasonic humidification and heating device for proton exchange membrane fuel cell

Abstract

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-humidity control system and the piezoelectric ceramic sheet are connected with the ultrasonic driving part. The ultrasonic humidification and heating device has the beneficial effects that relatively high absorption capacity and elasticity of the porous liquid absorption ventilation core is utilized, a fuel is attached and transferred to a lower part of the porous metalfiber plate; and the heated and humidified hydrogen fuel is emitted by the piezoelectric ceramic sheet, and the energy density of the fuel cell is improved.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cells, in particular to an ultrasonic humidification and heating device for proton exchange membrane fuel cells. Background technique [0002] Energy shortage and environmental damage force governments to formulate and deepen long-term energy strategies. Especially in recent years, the explosive growth of new energy vehicles has forced global scholars, enterprises, individuals and groups to concentrate on developing economical and efficient new energy solutions. Focus on research on renewable energy and sustainable energy utilization. Under this technical background, fuel cell (FuelCells) technology has risen rapidly and achieved tremendous development. [0003] Fuel cells usually directly convert chemical energy into electrical energy under the action of catalysts. In theory, as long as fuel cells can be refueled in time, their energy output can be considered unlimited. Ther...

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Problems solved by technology

Aiming at the problems of weak battery performance and low maximum energy density of the existing proton exchange membrane fuel cells, the heating and humidification of the existing fuel cell feeding system are carried out separately, the system is huge and complicated, the efficiency is low, and the cost is high

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