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Fuel cell polar plate and fuel cell using the same

A fuel cell plate and fuel cell technology, which is applied to fuel cell components, fuel cells, solid electrolyte fuel cells, etc., can solve the problems of affecting gas transmission, hindering electrochemical reactions, and low power generation efficiency of fuel cells, achieving Increased speed and improved power generation efficiency

Inactive Publication Date: 2008-11-12
FU ZHUN PRECISION IND SHENZHEN +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the flow of the airflow 60 in the inlet flow channel 52, the outlet flow channel 54 and the diffusion flow channel 56 is basically a laminar flow, and it is difficult to fully enter the gas diffusion layer through the diffusion effect to participate in the electrochemical reaction, so that the power generation efficiency of the fuel cell not tall
In addition, the excessive moisture generated by the electrochemical reaction cannot be discharged in time through the outlet flow channel 54, and the excessive moisture will accumulate and block the pores in the gas diffusion layer, affecting the transmission of gas, thereby further hindering the electrochemical process. The progress of the reaction

Method used

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  • Fuel cell polar plate and fuel cell using the same
  • Fuel cell polar plate and fuel cell using the same
  • Fuel cell polar plate and fuel cell using the same

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Embodiment Construction

[0017] figure 1 Shown is a schematic structural view of one embodiment of the fuel cell of the present invention. The fuel cell 100 includes a lower plate 10 , a membrane electrode assembly 20 and an upper plate 30 , and the membrane electrode assembly 20 is sandwiched between the lower plate 10 and the upper plate 30 . The membrane electrode assembly 20 includes a proton exchange membrane 21, two catalyst layers 22, 23 and two gas diffusion layers 24, 25, and the two catalyst layers 22, 23 are respectively sandwiched between the proton exchange membrane 21 and the two gas diffusion layers 24 , Between 25. The upper pole plate 30 and the lower pole plate 10 mainly play the role of conducting gas, conducting electricity and conducting water in the fuel cell 100 . The two gas diffusion layers 24, 25 are made of porous materials. The gas (such as hydrogen or air) entering from the upper pole plate 30 and the lower pole plate 10 enters the two gas diffusion layers 24, 25 and th...

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Abstract

The invention discloses a polar plate of a fuel cell, wherein, one surface of the polar plate is provided with a channel, the channel comprises two groups of intake channels and one group of outgassing channels, the two groups of intake channels are respectively positioned at the two sides of the outgassing channel, a separator is arranged between the each group of intake channels and the outgassing channel, and the separator separates the intake channel from the outgassing channel so as to impel gas to enter a gas diffusion layer adjacent to the separator in a compulsory convective way. The arrangement of the two groups of intake channels and the separator can effectively reinforce the compulsory convective diffusion effect of flows in the channel of the polar plate, can carry away surplus moisture accumulated in the gas diffusion layer, and can increase the generation efficiency of the fuel cell.

Description

technical field [0001] The invention relates to a pole plate of a fuel cell, in particular to a pole plate of a proton exchange membrane fuel cell and a fuel cell using the pole plate. Background technique [0002] In recent years, there have been many major breakthroughs in fuel cell technology, among which Proton Exchange Membrane Fuel Cell (PEMFC) has received considerable attention, and governments and business circles all over the world have invested considerable research and development energy. [0003] In addition to the advantages of general fuel cells such as no pollution and high energy conversion efficiency, proton exchange membrane fuel cells also have the characteristics of close to room temperature operation and rapid activation, especially suitable for transportation power, portable power and household power generation. [0004] The key components that make up a fuel cell include electrodes, proton exchange membranes, and bipolar plates. The polar plate has t...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M4/86H01M8/10H01M8/0258H01M8/0263H01M8/1004
CPCY02E60/521Y02E60/50
Inventor 陈名恩
Owner FU ZHUN PRECISION IND SHENZHEN
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