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Gas flow passage structural of fuel batter with proton exchange film

A proton exchange membrane and fuel cell technology, which is applied to fuel cell parts, fuel cells, solid electrolyte fuel cells, etc., can solve problems such as uneven gas distribution, improve the problem of uneven gas distribution, and solve the problem of uneven gas distribution. problem, reduce the effect of a large increase

Inactive Publication Date: 2008-12-31
CHONGQING ZONGSHEN INNOVATION TECH RES INST CO LTD
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Problems solved by technology

[0005] In view of the above-mentioned problems caused by all the basic battery units of the current proton exchange membrane battery stacks being all connected in parallel to the air inlet and outlet, the purpose of the present invention is to provide a gas channel structure of the proton exchange membrane fuel cell to improve the airflow caused by the above reasons. The problem of uneven gas distribution

Method used

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  • Gas flow passage structural of fuel batter with proton exchange film
  • Gas flow passage structural of fuel batter with proton exchange film

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so as to help understand the content of the present invention.

[0014] like figure 2 As shown, a proton exchange membrane fuel cell stack is formed by stacking three groups of battery cells, that is, the first group of battery cells 1, the second group of battery cells 2, and the third group of battery cells 3 are stacked in sequence, and each group The battery unit can use one basic battery unit or be formed by stacking 2 to 5 basic battery units. At the same time, three fuel gas intake shaft channels are set, which are respectively X1, X2, and X3, forming three independent fuel gas intake shaft channels.

[0015] All the basic battery units in the first group of battery units 1 communicate with the shaft channel X1 through the gas inlet Y1 on the fuel gas deflector, but are blocked from the other two shaft channels X2 and X3.

[0016] All t...

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Abstract

The invention discloses a gas flow channel structure of a proton exchange membrane fuel cell. The structure comprises a plurality of basic cell units which pile together to form an electric pile. All basic battery units are divided into at least two groups, every group of cell unit adopts an independent inlet vertical shaft channel which is only used for feeding air to all of the basic cell units in the group, and similarly every group of cell unit adopts an independent outlet vertical shaft channel which is only used for draining air from all of the basic cell units in the group. The structure is used for improving the unevenness of the electric pile gas.

Description

technical field [0001] The invention relates to a proton exchange membrane fuel cell, and specifically relates to the design of a gas channel and a flow field of the proton exchange membrane fuel cell. Background technique [0002] A proton exchange membrane fuel cell stack is composed of multiple basic battery units. Each basic battery unit is composed of two parallel gas deflectors and a membrane electrode assembly sandwiched between them. In order to supply fuel gas and supporting gas to each basic battery unit, and to discharge reacted water and excess gas, an air inlet channel and an exhaust channel are also provided. like figure 1 As shown, the existing technology is to provide a gas shaft channel X1 for the fuel gas (such as hydrogen) of the fuel cell to run through all the basic battery units of the stack, and the gas inlet Y1 of the gas deflector 1 of each basic battery unit is communicated The gas shaft channel X1. Similarly, for the combustion-supporting gas (...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M4/88H01M8/10H01M8/0258H01M8/1007
CPCY02E60/50
Inventor 姚赤光骆欣
Owner CHONGQING ZONGSHEN INNOVATION TECH RES INST CO LTD
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