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An airflow guiding slot plate of fuel battery

A technology of fuel cells and air flow channels, which is applied to fuel cell parts, fuel cells, electrical components, etc., can solve the problems of difficult layout and large effective area of ​​plates, and achieve increased active area, increased power density, The effect of small pressure drop

Active Publication Date: 2007-12-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design feature of these diversion bipolar plates is that one or more pairs of inlet and outlet fluid holes at the two ends of the bipolar plate are symmetrically distributed at the two ends of the plate, occupying a large effective area of ​​the plate, and multiple different fluid holes It is difficult to arrange between the same end

Method used

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  • An airflow guiding slot plate of fuel battery
  • An airflow guiding slot plate of fuel battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] As shown in Fig. 3, a kind of guide air channel plate of fuel cell, described air guide channel plate is made up of positive air guide channel plate A, back guide cooling fluid channel, described air guide channel plate There are single-hole 4-inlet and double-hole 5-outlet fluid holes. The air-inlet fluid hole is divided into four air-guiding flow grooves 6, and each of the four air-guiding flow grooves is divided into four branch air-guiding flow grooves in a parallel straight-line shape. 7. The branch air flow grooves 7 are collected into the four air flow grooves at the other end, and the four air flow grooves respectively enter the fluid holes 5 of the air; the air flow groove plate is provided with a single hole 8 inlets, double holes and 9 hydrogen outlet fluid holes; the guide air flow slot plate is provided with double holes inlet 12, double holes outlet 13 fluid holes for cooling fluid, and the fluid holes entering the cooling fluid are divided into four guide ...

Embodiment 2

[0044] As shown in Figure 4, a kind of air-guiding flow channel plate of a fuel cell, the air-guiding air flow channel plate is a flow-guiding unipolar plate, and the described air-guiding flow channel plate is provided with a single hole 14 for air inlet and a double hole 15 for air outlet The fluid hole of the air inlet is divided into six air-guiding flow grooves, and each of the six air-guiding flow grooves is divided into four branch air flow grooves in a parallel straight-line shape, and the branch air flow grooves are brought together to the other end. Six air-guiding flow grooves, and the six air-guiding flow grooves respectively enter the fluid holes for air outlet; the air-guiding flow groove plate is provided with fluid holes for single-hole inlet and double-hole hydrogen outlet; the air-guiding flow grooves The slot plate is provided with double holes for inlet and outlet for cooling fluid; the opposite side of the guide air flow slot plate is a flat plate.

[0045...

Embodiment 3

[0047] Please refer to Fig. 3, a fuel cell guide air channel plate, the guide air channel plate is a guide unipolar plate, the air guide channel plate is provided with a single hole into, four holes out of the air Fluid hole, the fluid hole for air inlet divides twenty air-guiding flow grooves, and each of the twenty air-guiding flow grooves divides into two branch air flow grooves in a parallel straight-line shape, and the branch air flow grooves gather together again. To the twenty air-guiding flow channels at the other end, the twenty air-guiding flow channels respectively enter the fluid holes for air outlet; holes; the air-guiding trough plate is provided with three holes for entering and four holes for cooling fluid out; the reverse side of the air-guiding trough plate is a flat plate.

[0048] The guide holes of the above-mentioned air-guiding chute plate are respectively concentrated at the upper and lower ends of the air-guiding chute plate, and the fluid single holes...

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Abstract

The invention relates to air guiding groove board of fuel battery, said air guiding groove board comprises positive air guiding groove board; negative surface is flat board or single board with cooling flow groove, said air guiding groove board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.

Description

technical field [0001] The invention relates to a fuel cell, in particular to a fuel cell guide air flow channel plate. Background technique [0002] An electrochemical fuel cell is a device that converts hydrogen fuel and oxidant into electrical energy and reaction products. The internal core component of the device is the membrane electrode (Membrane Electrode Assembly, referred to as MEA). The membrane electrode (MEA) is composed of a proton exchange membrane and two porous conductive materials, such as carbon paper, sandwiched between the two sides of the membrane. On the two boundary surfaces of the membrane and the carbon paper, there are even and finely dispersed catalysts for initiating electrochemical reactions, such as metal platinum catalysts. Conductive objects can be used on both sides of the membrane electrode to draw the electrons generated during the electrochemical reaction through an external circuit to form a current loop. [0003] At the anode end of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/0258
CPCY02E60/50
Inventor 胡里清李丽李拯章波
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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