Stack silicon-base miniature fuel celles and manufacturing method

A fuel cell stack and fuel cell technology, which is applied in the direction of fuel cell grouping, fuel cells, chemical instruments and methods, etc., can solve the problems of large packaging volume ratio, low single cell output voltage, and small output current density range, and achieve packaging Small size, small battery internal resistance, and large performance improvement

Inactive Publication Date: 2007-07-18
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low output voltage, small output current density range, and large package volume ratio of the above-mentioned micro-fuel cells, the present invention proposes a stacked micro-fuel cell stack and its manufacturing method

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  • Stack silicon-base miniature fuel celles and manufacturing method
  • Stack silicon-base miniature fuel celles and manufacturing method
  • Stack silicon-base miniature fuel celles and manufacturing method

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0033] The cross-sectional structure of a typical embodiment of the silicon-based micro fuel cell stack of the present invention is shown in FIG. 1, and the split structure of its components is shown in FIG. 2. The stacked silicon-based micro fuel cell stack includes a single cell stack composed of two fuel cell single cells, a sealing component, a clamp component and a fluid conduit. The two fuel cell single cells include three silicon electrode plates and two membrane electrodes. The outer electrode plate (11), the inner electrode plate (13) and the membrane electrode (21) form a single cell (01), and the outer electrode plate ( 12), the inner electrode plate (13) and the membrane electrode (22) form a single cell (02), wherein the inner electrode plate (13) is shared by two fuel cell single cells, and the single cell (01) and the single cell (02) Make up a singl...

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Abstract

Stacked silicon-based micro fuel cell group and its production method belong to the field of micro-energy and micro-machining areas. It includes the single cell stacking, sealing component, claming component and fluid catheter. Two or more fuel cell single batteries form stack, which order is: the second outer plate (12), the second membrane electrode (22), the inner plate (13), the first membrane electrode (21) and the first outer plate (11), and use the clamping and sealing components to seal package. The production method includes processing silicon plate and seal packaging of different component parts, using silicon micro-machined to produce a drainage channel, packaging the single cell stack. The invention has small resistance of battery, small package size, flexible flow graphic design, various series and parallel forms, which can get a larger output current and voltage when a small increase in the volume of cases.

Description

Technical field [0001] The invention relates to a stacked silicon-based micro fuel cell stack and a manufacturing method thereof, and belongs to the field of micro energy and micro mechanical processing. Background technique [0002] Micro fuel cell is a device that directly converts the chemical energy of fuel (such as methanol, hydrogen, etc.) into electrical energy. With its high energy density, environmental protection and pollution-free, the fuel is easy to store and transport, and work at room temperature. Notebook computers, PDAs, digital cameras), wireless communication networks (such as mobile phones, GPS, sensor network nodes), micro-systems (such as system-on-chip, SOC, micro-systems composed of MEMS devices) have outstanding advantages. The silicon-based micro fuel cell produced by mature MEMS technology has the advantages of high accuracy, good repeatability, and low mass production cost. It is expected to be integrated with other MEMS devices and IC circuits to prom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/24B81B7/00B81C1/00B81C5/00B81C99/00H01M8/249
CPCY02E60/50Y02P70/50
Inventor 王晓红钟凌燕姜英琪
Owner TSINGHUA UNIV
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