Bipolar plate assembly for hydrogen-oxygen fuel cell

A fuel cell and bipolar plate technology, applied in fuel cells, electrical components, circuits, etc., can solve the problems of damaging the gas diffusion layer, destroying the battery structure, and reducing battery performance, so as to enhance local disturbance, promote transmission, and improve drainage effect of ability

Inactive Publication Date: 2021-08-17
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, under the action of forced convection, a large pressure drop will occur, which may damage the gas diffusion layer, and even cause membrane perforation, destroying the battery structure and reducing battery performance.

Method used

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  • Bipolar plate assembly for hydrogen-oxygen fuel cell
  • Bipolar plate assembly for hydrogen-oxygen fuel cell
  • Bipolar plate assembly for hydrogen-oxygen fuel cell

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Embodiment Construction

[0033] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. 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 ordina...

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Abstract

The invention provides a bipolar plate assembly for an oxyhydrogen fuel cell, the bipolar plate assembly comprises a bipolar plate body, the bipolar plate body is provided with a flow channel, the flow channel is internally provided with a wedge-shaped structure, and the inclined surface of the wedge-shaped structure is inclined upwards along the flow direction of gas in the flow channel; and a plurality of protrusions are arranged on the wedge-shaped structure, and the top ends of the protrusions are lower than the top end of the flow channel. According to the invention, the local flow area of the flow channel is changed while the overall flow area in the flow channel in the airflow direction is reduced, the overall airflow distribution uniformity of the flow channel is improved, the airflow speed near an outlet is improved, the local disturbance of the flow channel is enhanced, the transmission of reaction gas to an electrode is promoted, and the drainage capacity of the bipolar plate is improved.

Description

technical field [0001] The invention relates to the technical field of fuel cell bipolar plates, in particular to a bipolar plate assembly for hydrogen-oxygen fuel cells. Background technique [0002] With the intensification of environmental pollution caused by fossil fuels and the increasingly severe energy crisis, finding new energy sources has become a hot issue in the world. Among various new energy sources, hydrogen, an efficient and non-polluting energy source, has attracted much attention. Hydrogen-oxygen fuel cell is a pollution-free, high-efficiency energy conversion device, which has the advantages of high efficiency, long life, high energy density, and fast start-up. It is widely used in power stations, electronic equipment, aerospace vehicles, submarines, etc. field. The hydrogen-oxygen fuel cell consists of bipolar plates, flow channels, diffusion layers, catalytic layers and proton exchange membranes. Both the bipolar plate and the membrane electrode group a...

Claims

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Application Information

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IPC IPC(8): H01M8/0258H01M8/0265
CPCH01M8/0258H01M8/0265Y02E60/50
Inventor 李世安杨治沈秋婉杨国刚潘新祥马峻峰王皓
Owner DALIAN MARITIME UNIVERSITY
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