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Enclosed air-cooling fuel cell

A fuel cell and closed technology, which is applied in the direction of fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve problems such as the impact on the life of membrane electrode assemblies, achieve the goal of reducing plating area, reducing costs, and improving service life Effect

Pending Publication Date: 2019-05-14
ZHENGZHOU AFFIRMATIVE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a closed air-cooled fuel cell to isolate the heat dissipation air channel from the oxygen supply channel and solve the problem that the air quality has a relatively large impact on the life of the membrane electrode assembly

Method used

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Examples

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Embodiment 1

[0027] It should be noted in advance that the proportions, dimensions and deformations of the components in the embodiments are drawn according to the proportions and dimensions that facilitate explanation, rather than actual dimensions, and are not intended to limit the present invention. The innovation of the present invention lies in the optimized design of the structure of a single battery unit, therefore, the following embodiments only use the unit as an example for illustration.

[0028] like Figure 2-Figure 5 As shown, the closed air-cooled fuel cell includes an anode plate 4, a membrane electrode assembly 5, a cathode plate 6, and a heat dissipation plate 7. The membrane electrode assembly 5 is sandwiched between the anode plate 4 and the cathode plate 6, and the heat dissipation plate 7 is stacked. on the cathode plate 6. In this embodiment, it is defined that the cathode plate 6 is above the anode plate 4, and the anode plate 4, the cathode plate 6 and the membrane...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is that the anode plate adopts the anode plate in the prior art that is not provided with the second airflow channel. When the anode plate and the membrane electrode assembly are stacked, the periphery is glued, and at the same time of sealing and fixing, there is also a gap formed between the anode plate and the middle part of the membrane electrode assembly for air flow to pass through.

Embodiment 3

[0035] The difference between this embodiment and Embodiment 1 is that the structure of the cooling plate adopts another structure. Several heat dissipation passages provided by the heat dissipation plate 8, the cross section of a single heat dissipation passage is designed as a trapezoidal groove 81, such as Image 6 shown.

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Abstract

The invention relates to an enclosed air-cooling fuel cell. The enclosed air-cooling fuel cell comprises a positive electrode plate and a membrane electrode assembly and comprises a negative electrodeplate and cooling plates, wherein the membrane electrode assembly is sandwiched between the positive electrode plate and the negative electrode plate, the cooling plates are arranged on the negativeelectrode plate in a lamination way, a cooling passage is formed between the cooling plates and the negative electrode plate and is used for natural air to circulate, an oxygen supply passage is formed between the negative electrode plate and the membrane electrode assembly and is used for oxygen or filter air to circulate, and the cooling passage and the oxygen supply passage are isolated with each other. Impurity-containing air is only used for cooling and is not in contact with the membrane electrode assembly any longer, the influence of low-air quality on lifetime of the membrane electrodeassembly is further reduced, and the service lifetime of the membrane electrode assembly is prolonged.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a closed air-cooled fuel cell. Background technique [0002] A fuel cell is a chemical device that continuously converts the chemical energy in a continuously supplied fuel and oxidant into electrical energy. According to the nature of the electrolyte, fuel cells can be subdivided into alkaline fuel cells (AFC), proton exchange membrane fuel cells (PEMFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC). Among them, the power generation of the proton exchange membrane fuel cell directly converts the chemical energy of the fuel into electrical energy, with fewer steps and high efficiency. There is no combustion during the power generation process, so no pollution is generated, and there are no rotating components, so the noise is low. Proton exchange membrane fuel cells are low-temperature fuel cells that have developed rap...

Claims

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Application Information

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IPC IPC(8): H01M8/04014H01M8/04007H01M8/0263H01M8/04089H01M8/1007
CPCY02E60/50
Inventor 王科锋
Owner ZHENGZHOU AFFIRMATIVE TECH LTD
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