Anode plate construction of fuel cell

A technology for anode plates and fuel cells, which is applied to fuel cell parts, fuel cells, battery electrodes, etc., can solve the problems of fuel leakage, poor flow field design flexibility, and high cost, and achieve reliable sealing effect and flow field The effect of high design flexibility

Inactive Publication Date: 2008-11-19
顾章涵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of fuel leakage, complex processing, high cost and poor flow fi

Method used

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  • Anode plate construction of fuel cell
  • Anode plate construction of fuel cell
  • Anode plate construction of fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] Figure 6 It is a cross-sectional view viewed from the horizontal direction. It includes an upper half plate 31, a lower half plate 32, a sealing ring 33 partially embedded in the upper surface of the upper half plate, an adhesive 34, a longitudinal fuel main channel 35, a longitudinal oxidant main channel 36, and a through upper half plate located on the upper surface of the upper half plate Thickness of the flow field 37, the flow groove 38 located on the upper surface of the lower half plate, the anode diffusion layer 39, the membrane electrode 40, the cathode diffusion layer 41, and the upper and lower layers of tape 42.

[0043] The relationship among the anode diffusion layer 39, the membrane electrode 40, the cathode diffusion layer 41, and the upper and lower layers of tape 42 is the same as that of the known technology. The membrane electrode is slightly larger than the anode diffusion layer and the cathode diffusion layer, and its protruding ed...

Example Embodiment

[0053] Example 2

[0054] Such as Figure 8 Shown. Others are the same as in embodiment 1, the only difference is: the adhesive 34 is replaced by the sealing ring 45; on the lower surface of the upper half plate and (or) the upper surface of the lower half plate, there is a recess for accommodating the sealing ring 45 at the corresponding position. groove. The sealing ring 45 realizes the sealing between the two half plates, and the assembly pressing force of the fuel cell realizes conductive contact.

Example Embodiment

[0055] Example 3

[0056] Such as Picture 9 Shown. Others are the same as Example 1, the difference lies in:

[0057] 1. The flow field 46 which is set on the upper surface of the lower half plate and does not penetrate through the thickness of the lower half plate is added. The flow field 46 is similar in shape to the flow field 37 and has corresponding positions, thereby increasing the cross-sectional area of ​​the flow field and reducing the resistance of the fuel flow.

[0058] 2. The flow groove 47 provided on the lower surface of the upper half plate is added, and its position corresponds to the flow groove 38, thereby increasing the cross-sectional area of ​​the flow groove and reducing the resistance of the fuel flow.

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Abstract

Disclosed is an anode plate for a fuel cell: A, the anode plate comprises an upper half plate and a lower half plate which are tightly coupled; B, either a flow field which runs through the upper half plate or not or a through hole or a blind hole, or both are arranged on the upper surface of the upper half plate; C, at least the lower surface of the upper half plate or the upper surface of the lower half plate is provided with a flow flute; one end of the flow flute is communicated with the flow field or the hole and the other end is communicated with a main fuel channel. The anode plate has the advantages that sealing is reliable; the anode plate is suitable for batch production and the flow field is flexible in design.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an anode plate structure of a fuel cell. Background technique [0002] A fuel cell is a device that directly converts chemical energy into electrical energy without combustion. Since it is not limited by the Carnot cycle, its conversion efficiency can easily reach more than 50%, or even more than 70%. In the case of using hydrogen as fuel, the reaction product is pure water without any pollution to the environment. [0003] The voltage of a single fuel cell is low, and the power is also limited, so generally several or even dozens of fuel cells are stacked in series to increase its output voltage and power. In this case, in order to smoothly introduce fuel into each single cell, a longitudinal total channel is generally used, perpendicular to the membrane electrode assembly of each single cell, to introduce fuel into the fuel cell stack, and then lead out the horizontal channel from th...

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M4/86H01M8/0258
CPCY02E60/50Y02P70/50
Inventor 顾章涵
Owner 顾章涵
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