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Metal bipolar plate and air-cooled proton exchange membrane fuel cell

A proton exchange membrane and metal bipolar plate technology, which is applied to fuel cells, fuel cell components, circuits, etc., can solve the problems affecting the performance of air-cooled proton exchange membrane fuel cells, specific power density, and low gas diffusion. Achieve the effect of simple structure, increase effective area and reduce cost

Pending Publication Date: 2021-10-01
上海氢晨新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the content of the above patents that no matter it is a typical graphite bipolar plate or a typical metal bipolar plate, the gas flow channels on the bipolar plate are straight, resulting in a low degree of gas diffusion in the gas diffusion layer, thus Affects the performance and specific power density of air-cooled proton exchange membrane fuel cells

Method used

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  • Metal bipolar plate and air-cooled proton exchange membrane fuel cell
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  • Metal bipolar plate and air-cooled proton exchange membrane fuel cell

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Embodiment 1

[0027] Such as Figure 1~3 As shown, this embodiment provides a metal bipolar plate for an air-cooled proton exchange membrane fuel cell. The metal bipolar plate has an upper and lower two-layer structure, the upper layer is a cathode plate 1 made of a thin metal plate, and the lower layer is an anode plate 2 made of a thin metal plate. Wherein: the two ends of the anode plate 2 are respectively provided with a fuel inlet and outlet 21 , and the middle section of the anode plate 2 is a fuel channel groove 22 communicating with the fuel inlet and outlet 21 . Both ends of the cathode plate 1 are also provided with an inlet and outlet structure (not shown in the figure), and the inlet and outlet structure of the cathode plate 1 is installed in cooperation with the fuel inlet and outlet 21 of the anode plate 2 to form a sealing mechanism, which is used to ensure the transportation and safety of the fuel. seal. The middle section of the cathode plate 1 is a corrugated plate. Gen...

Embodiment 2

[0033] The overall structure of this embodiment is similar to that of Embodiment 1, and repeated deployment is not performed. The difference is that a flange structure 13 is provided at the opening of the through hole 12 to further improve the gas mixing degree and promote gas diffusion. Such as Figure 4 As shown, the flanging structure 13 in this embodiment is a visor plate, and the flanging structure 13 and the cathode plate 1 are integrally formed.

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Abstract

The invention relates to a metal bipolar plate and an air-cooled proton exchange membrane fuel cell. The metal bipolar plate for the air-cooled proton exchange membrane fuel cell comprises an anode plate and a cathode plate which are stacked up and down, the middle section of the cathode plate is a corrugated plate, and each groove of the corrugated plate is used as a gas channel; and all the gas channels transversely penetrate through the negative plate, a plurality of through holes are distributed in the corrugated plate, and each through hole penetrates through two adjacent gas channels. The corrugated plate is provided with the through holes penetrating through the two adjacent gas channels, so that in an open air flow field, air can be exchanged on the two sides of the cathode plate through the through holes to disturb air flow in the open air flow field, the gas mixing degree is improved, gas diffusion in the cathode side gas diffusion layer is promoted, the effective area of the electrode in the actual electric pile operation process is increased, and the overall performance and the specific power density of the fuel cell are remarkably improved.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a metal bipolar plate and an air-cooled proton exchange membrane fuel cell. Background technique [0002] The air-cooled proton exchange membrane fuel cell is a power generation device that directly uses ambient air as a coolant and an oxidant to directly convert the chemical energy between the fuel and the oxidant into electrical energy. Compared with water-cooled proton exchange membrane fuel cells, air-cooled proton exchange membrane fuel cells directly use ambient air that provides oxidants as coolant, and do not need to design additional coolant flow fields, so the bipolar plate structure can be greatly simplified, and it also simplifies The peripheral auxiliary equipment for stack operation, such as heat dissipation equipment, etc., thus greatly reducing the weight of the entire power generation device. [0003] The bipolar plate materials used in the existing air-cooled proton e...

Claims

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Application Information

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IPC IPC(8): H01M8/026H01M8/0265H01M8/1006
CPCH01M8/026H01M8/0265H01M8/1006Y02E60/50
Inventor 麦建明
Owner 上海氢晨新能源科技有限公司