A fuel cell bipolar plate and method of making the same

A fuel cell and bipolar plate technology, applied in fuel cells, circuits, processing and manufacturing, etc., can solve the problem of inability to make complex flow channels, and achieve the effects of enhancing the mass transfer rate of reactants, increasing the effective concentration, and improving performance.

Active Publication Date: 2022-06-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Use 3D printing technology to solve the limitation that milling cutter cutting and die stamping cannot make complex flow channels, improve the designability of fuel cell flow channels, and reduce the cost of bipolar plate manufacturing

Method used

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  • A fuel cell bipolar plate and method of making the same
  • A fuel cell bipolar plate and method of making the same
  • A fuel cell bipolar plate and method of making the same

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Embodiment Construction

[0028] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description , rather tha...

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Abstract

The invention provides a fuel cell bipolar plate and a manufacturing method thereof, including a bipolar plate main body; the bipolar plate main body is provided with a reserved area for a conductive plate, a flow channel area, an air inlet hole and an air outlet hole; A staggered distribution of sub-channels is added inside, which provides an additional discharge path for liquid water, enhances the drainage capacity of the channel, reduces the risk of flooding of the porous electrode, strengthens the mass transfer of reactants, and improves the fuel cell at medium and high current densities. performance under operating conditions. At the same time, the optimized distribution of gas is realized, the effective concentration of oxygen in the electrode is increased, and the performance of the battery is optimized. The invention utilizes 3D printing technology to make fuel cell bipolar plates, which makes up for the deficiency that the traditional processing technology cannot meet the manufacturing requirements of complex structure flow channels, and has short processing time, low cost and high precision, which helps to broaden the scope of fuel cell flow field design. Direction of development.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a fuel cell bipolar plate and a manufacturing method thereof. Background technique [0002] Environmental issues have always been a major issue for people's livelihood. Hydrogen energy has always been the focus of researchers because of its high energy and no pollution. The dependence of traditional internal combustion engines on fossil fuels has caused great pollution to the environment, which gave birth to the development of fuel cells. The proton exchange membrane fuel cell (PEMFC) decomposes hydrogen into protons and electrons under the action of the anode catalyst through the proton exchange membrane. The protons are combined with the cathode oxygen through the membrane to generate water, and the electrons provide electrical energy for the electrical appliances through the external circuit. The whole process is clean and free. Pollution. The bipolar plate is an importan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0258B29C64/10B33Y10/00
CPCH01M8/0258B29C64/10B33Y10/00Y02P70/50
Inventor 邢磊陈高健徐远翔施伟东
Owner JIANGSU UNIV
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