Normal temperature bonding technology-based microminiature fuel cell encapsulation method

A packaging method and fuel cell technology, which are applied in the fields of fuel cells, fuel cell components, and microstructure technology, can solve problems such as affecting the performance and reliability of cells, increasing the difficulty of packaging operations, and increasing the volume of cells.
CN101894954BActive Publication Date: 2012-11-14TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2012-11-14

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Abstract

The invention discloses a normal temperature bonding technology-based microminiature fuel cell encapsulation method, which belongs to the technical field of processing and systems of microfluids and micromachining. A polar plate surface after being processed by oxygen plasma is bonded to a flow field sealing washer of a micro-proton exchange membrane fuel cell (PEMFC) so as to realize ordered assembly of a cell component by bonding or using a solid adhesive tape. A boding interface between a silicon polar plate and the flow field sealing washer and an adhesive on the solid adhesive tape provide a pressure required for fastening the cell component. A layer of diaphragm seal is deposited on the surface of the cell body of the micro-PEMFC to realize complete sealing of the micro-PEMFC and achieve an effect on protecting the cell body. The method reduces moveable components in the cell body, reduces difficulties in encapsulation, avoids performance reduction of a proton exchange membrane because of the damage which is caused by high-temperature dehydration, avoids the pollution to MEA and other cell components, does not need to use a positioning clamp for clamping, does not increase cell device volume, and simultaneously ensures the reliability of a cell.
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Description

technical field

[0001] The invention belongs to the field of microfluidics and micromachining and system technology, and in particular relates to a micro-miniature fuel cell packaging method based on room temperature bonding technology. Background technique

[0002] In recent years, various micro-devices based on MEMS (Micro-Electro-Mechanical Systems, Micro-Electro-Mechanical Systems) technology have developed rapidly and have been widely used, but the development of corresponding micro-energy devices is relatively slow. The energy devices of common micro devices are larger in size, several times larger than working devices, which seriously weakens the advantages of micro devices and micro systems in terms of miniaturization and high integration. In recent years, with the rapid development of portable devices such as mobile phones and notebook computers, micro fuel cells with small volume and high energy density are being widely studied. However, the current encapsulation ...

Claims

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