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PEMFC bipolar plate flow channel section optimization method and three-dimensional proton exchange membrane fuel cell

A technology of proton exchange membrane and flow channel section, which is applied in the field of bipolar plate flow channel structure of proton exchange membrane fuel cell, can solve the problems of shortening battery life, reducing battery performance, and uneven distribution, so as to achieve reliable simulation results and reduce calculation Quantity, time and cost saving effect

Active Publication Date: 2021-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

On the contrary, the unreasonable cross-sectional shape of the flow channel will lead to the uneven distribution of the reaction gas in the catalytic layer, resulting in cold spots, hot spots and water flooding, which will reduce the performance of the battery and shorten the life of the battery

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  • PEMFC bipolar plate flow channel section optimization method and three-dimensional proton exchange membrane fuel cell
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  • PEMFC bipolar plate flow channel section optimization method and three-dimensional proton exchange membrane fuel cell

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Embodiment Construction

[0052]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The relative arrangements, expressions and numerical values ​​of components and steps set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of...

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Abstract

The invention discloses a PEMFC bipolar plate flow channel cross section optimization method and a three-dimensional proton exchange membrane fuel cell. The optimization method comprises the followingsteps of 1, establishing a three-dimensional proton exchange membrane fuel cell geometric model; 2, meshing the three-dimensional proton exchange membrane fuel cell geometric model; 3, performing analog computation on the three-dimensional proton exchange membrane fuel cell geometric model; 4, extracting key simulation parameters, namely for each three-dimensional proton exchange membrane fuel cell geometric model, at the same position, extracting the key simulation parameters capable of laterally reflecting the influence of each three-dimensional proton exchange membrane fuel cell geometricmodel on the performance of the fuel cell, wherein the key simulation parameters comprise the speed of the cathode reaction gas, the concentration of the cathode reaction gas and the current density of the battery; and 5, optimizing the bipolar plate flow channel section. The method focuses on the influence of the cross section shape on the PEMFC performance, the calculation amount is reduced, andthe calculation stability and practicability are improved.

Description

technical field [0001] The invention relates to a method for optimizing the flow channel cross section of a PEMFC bipolar plate and a three-dimensional proton exchange membrane fuel cell, belonging to the field of the bipolar plate flow channel structure of the proton exchange membrane fuel cell. Background technique [0002] A proton exchange membrane fuel cell (PEMFC) is an energy conversion device that converts hydrogen and oxygen into electricity and water. Compared with phosphoric acid fuel cell (PAFC), alkaline fuel cell (AFC), molten carbonate fuel cell (MCFC) and solid oxide fuel cell (SOFC), PEMFC, as the fifth generation fuel cell, has no pollution and low noise , high energy conversion efficiency and other advantages, it is a kind of fuel cell with the fastest development at present. However, the relatively high cost and short lifetime of PEMFCs limit their commercial application. [0003] By optimizing the PEMFC bipolar plate flow channel structure, the uniform...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0258G06F30/20
CPCH01M8/0258G06F30/20Y02E60/50
Inventor 林开杰全景峰顾冬冬方亚美董伟菘乔竞驰吴立斌葛庆庄杰刘洋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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