Metal bipolar plate flow field system of proton exchange film fuel cell

Abstract

The invention discloses a metal bipolar plate flow field system of a proton exchange film fuel cell and belongs to the technical field of a fuel cell. The bipolar plate is of a three-layer structure formed by connecting an anode monopole plate, a cathode monopole plate and a middle partition plate, and a fuel flow field, an oxidizing agent flow field, a cooling liquid flow field II and a cooling liquid flow field I are formed respectively. The metal bipolar plate flow field system of the proton exchange film fuel cell is characterized in that an anode flow field reserves advantages of small pressure drop of multiple paths of serpentine flow channels and good gas diffusivity of interdigital flow channels; a cathode flow field reserves multiple paths of snake-shaped flow channels for exhausting, so the pressure is reduced conveniently, moreover, convex hulls enable oxidant flowing in the flow channels to be diffused to a diffusion layer to improve the battery power; two groups of doublecooling liquid flow fields with opposite cooling liquid flow directions enable the cooling temperature of the cooling liquid to be more uniform, so consistency of the working area of the fuel cell isbetter, the thermal control capability of the fuel cell is greatly improved, and safety of the fuel cell is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a metal bipolar plate flow field system of a proton exchange membrane fuel cell. [0002] technical background [0003] At present, the storage battery industry, such as lithium batteries, lead-acid, nickel-metal hydride, and nickel-cadmium batteries, has relatively large hidden dangers such as environmental protection and safety. Today, with the development of science and technology, it is difficult to meet the requirements of green energy. It is urgent to develop new alternative products. up. A fuel cell is a power generation device that directly converts the chemical energy in fuel and oxygen into electrical energy by means of an electrochemical reaction without combustion under isothermal conditions. It is considered to be the ultimate solution to the energy and environmental crisis. [0004] Due to its excellent low temperature and environmental protection properties, th...

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Problems solved by technology

[0003] At present, the storage battery industry, such as lithium batteries, lead-acid, nickel-metal hydride, and nickel-cadmium batteries, has relatively large hidden dangers such as environmental protection and safety. Today, with the development of science and technology, it is difficult to meet the requirements of green energy. It is urgent to develop new alternative products. up

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