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Vein-shaped fuel cell flow field structure, fuel cell bipolar plate and fuel cell

A fuel cell and flow field technology, used in fuel cells, battery electrodes, solid electrolyte fuel cells, etc., can solve problems such as incompatibility with effective area flow design and high battery pressure, achieve extensive social benefits and market prospects, and reduce storage. The difficulty of hydrogen and the effect of improving fuel efficiency

Active Publication Date: 2017-03-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The interdigitated flow field can improve battery efficiency and better drainage, but because it is a discontinuous flow field, the pressure in the battery is relatively high, and it is not suitable for the flow design with too large effective area

Method used

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  • Vein-shaped fuel cell flow field structure, fuel cell bipolar plate and fuel cell
  • Vein-shaped fuel cell flow field structure, fuel cell bipolar plate and fuel cell
  • Vein-shaped fuel cell flow field structure, fuel cell bipolar plate and fuel cell

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Embodiment 1

[0032] figure 2 It is a structural schematic diagram of the vein-like flow field structure in Embodiment 1 of the present invention.

[0033] Such as figure 2 Shown: a proton exchange membrane fuel cell bipolar plate with vein-like interdigitated structure flow field, the two plates of the bipolar plate include the reaction gas inlet 2, the reaction gas outlet 3 and the gas flow field, and the gas flow Sealing ring 1 around the field.

[0034] The bipolar plate in this embodiment is made of metal, such as stainless steel, titanium alloy and other materials. A sealing ring 1 is designed around the flow field to ensure the airtightness of the flow field plate. Preferably, the depth of the sealing ring 1 is 1 mm.

[0035] The gas flow field is a vein-shaped interdigitated flow field, including a main air intake channel 5 , a plurality of air intake branch channels 4 , a main air outlet channel 6 , and a plurality of air outlet branch channels 7 . The two reaction gas inlet...

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Abstract

The invention relates to a vein-like fuel cell flow field structure, wherein the gas flow field structure is a vein-like flow field and comprises a reaction gas inlet, a reaction gas outlet and a gas flow channel, the reaction gas inlet is arranged on the petiole position of the vein, and the reaction gas outlet is arranged on the leaf apex position of the vein. According to the present invention, the vein structure is introduced into the flow field design, such that the characteristics of low fluid flow resistance and uniform flow field distribution in the vein are applied in the flow field design so as to improve the battery performance.

Description

technical field [0001] The invention relates to a flow field structure of a proton exchange membrane fuel cell, in particular to a flow field structure of proton exchange membrane fuel based on vein-like bionics, a fuel cell bipolar plate and a fuel cell. Background technique [0002] A fuel cell is a device that directly converts chemical energy stored in fuel into electrical energy output through redox reactions at the molecular weight level. Unlike traditional heat engines, it is not limited by the Carnot cycle and has a high energy conversion rate. Especially for proton exchange membrane fuel cells, the total energy conversion efficiency can reach more than 80% when heat and power are combined. Since it uses hydrogen and oxygen as fuel, it also has a clean energy technology. [0003] The bipolar plate, also known as the collector plate, is an important part of the fuel cell. It needs to meet the following requirements: (1) to realize the electrical connection between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0258H01M4/86H01M8/10
CPCH01M4/86H01M8/0258H01M8/10Y02E60/50
Inventor 鲁聪达陈珍珍文东辉姜少飞
Owner ZHEJIANG UNIV OF TECH
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