A three-dimensional fine grid flow field bipolar plate for fuel cells and its preparation method
A fine grid, fuel cell technology, applied in fuel cells, fuel cell additives, electrolyte flow processing, etc., can solve problems such as difficult to achieve three-dimensional complex structure flow field shaping
Active Publication Date: 2021-09-14
WENZHOU UNIV
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Problems solved by technology
[0004] Traditional two-dimensional flow field preparation technology is difficult to realize the formation of three-dimensional complex structure flow field
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[0036] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.
[0037] See attached Figure 1-Figure 7 A three-dimensional fine mesh flow field bipolar plate for a fuel cell disclosed in the technical solution of the present invention includes a base plate 1, installation positioning holes 2 and fuel inlet and outlet ports 3, the base plate 1 is provided with a three-dimensional flow field 4, and the The three-dimensional flow field 4 includes a plurality of three-dimensional unit bodies 41 distributed in a network shape and a flow channel bottom plate 42. The three-dimensional unit body 41 includes a back top surface 41 and two back side surfaces 412. The thre...
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Abstract
The invention relates to a three-dimensional fine grid flow field bipolar plate for a fuel cell, which includes a substrate, on which a three-dimensional flow field is arranged, and the three-dimensional flow field includes a plurality of three-dimensional unit bodies distributed in a network shape, and the three-dimensional flow field is arranged on the substrate. The three-dimensional unit body includes the top surface of the back and two back sides of the back, the three-dimensional unit body is provided with a flow through hole, the flow through hole is arranged between the two back sides, and a spacer is provided between adjacent three-dimensional unit bodies The spacer unit communicates with the adjacent flow through hole, and the spacer unit also communicates with the spacer units around it. The three-dimensional flow field structure can realize forced convection between fuels, improve fuel utilization, greatly improve flow field structure and water space distribution, and improve battery output performance and service life. The method for preparing such a fuel cell bipolar plate with a three-dimensional complex and refined flow field can prepare a flow channel of any complex shape, and has a simple process and high reliability.
Description
technical field [0001] The invention relates to a proton exchange membrane fuel cell bipolar plate, in particular to a three-dimensional fine mesh flow field bipolar plate for a fuel cell and a preparation method thereof. Background technique [0002] Clean energy has always been a hot spot in international new energy research. As a renewable energy source, hydrogen energy has become a research focus in the field of energy. Among them, the proton exchange membrane fuel cell (PEMFC) is a green power generation device that uses hydrogen as fuel to convert chemical energy into electrical energy and only discharges water. Due to its outstanding features such as high energy conversion efficiency, fast response, long life, and zero pollution, it is the most promising clean power source applied in the field of new energy vehicles. [0003] As the key core component of the fuel cell, the bipolar plate accounts for 40% of the total cost and 80% of the total mass. The bipolar plate...
Claims
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IPC IPC(8): H01M8/0228H01M8/0258H01M8/0265H01M8/0267H01M8/0271H01M8/0276H01M8/04082H01M8/04089H01M8/04276B23K26/082B23K26/352B23K26/354C23C14/06C23C14/32
CPCB23K26/082B23K26/354B23K26/3576C23C14/0641C23C14/325H01M8/0228H01M8/0258H01M8/0265H01M8/0267H01M8/0271H01M8/0276H01M8/04089H01M8/04201H01M8/04276Y02E60/50
Inventor 张健陈宗汪黄鹏奕王逸翔陈益丰潘晓铭
Owner WENZHOU UNIV