Fuel cell

Abstract

The invention provides a fuel cell. The fuel cell comprises: a plurality of fuel cell stacks; an oxygen supply path, used for supplying oxidant gas to a power generation unit; and a hydrogen supply path, used for supplying fuel gas to the power generation unit. The pore diameters of micropores of a microporous water and oxygen humidification electrode plate and a microporous hydrogen humidification electrode plate are controlled to be 0.4-0.8 microns. The fuel cell further comprises a group of manifold channels, wherein the manifold channels are formed between a hydrogen flow channel and through holes of an oxygen flow field plate; one part of manifolds supply hydrogen among the through holes of the oxygen flow field plate; and the other part of manifolds circulate substances in the channels by a pressure sensor. According to the fuel cell, the energy output density of the fuel cell is increased on the premise of not increasing the size of the channel.

Description

technical field [0001] The invention relates to a fuel cell. In the fuel cell of the present invention, the reactant species can be recycled inside the fuel cell. Background technique [0002] A fuel cell is a power generation device that converts the chemical energy in fuel directly into electrical energy through an electrochemical reaction. Because of its high working temperature, waste heat can be effectively utilized, and the energy conversion efficiency is the highest among all fuel cells (up to over 70%); due to few moving parts, it works quietly; and because of the all-solid structure, no acid and alkali Corrosive substances are contained in the battery, and the pollution emission of the battery is extremely low, so it is called a green power generation technology in the 21st century. [0003] Proton exchange membrane fuel cell (protonexchangemembranefuelcell) is a kind of fuel cell, which is equivalent to the "reverse" device of water electrolysis in principle. It...

AI Technical Summary

Problems solved by technology

Patent 201410210695.6 proposes a passive heat-exhausting fuel cell stack. Through structural design, the self-drainage and air intake function of the battery stack itself is realized, which solves the problem that the complex and huge auxiliary system of the fuel cell greatly limits its application in the field of high specific power requirements. Application problems, while avoiding complex auxiliary systems affecting the reliability of the entire fuel cell system

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