The Investigation on the Manufacturing Process of a Printed Circuit Board Digital Package Based Small Direct Methanol Fuel Cell

• Main Authors: Chia-Hao Chang, 張家豪
• Other Authors: Yean-Der Kuan
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/44731965596045142094

碩士 === 北台科學技術學院 === 機電整合研究所 === 94 === Fuel cell is one of the chemical reactors and it commits transfer the chemical energy to the electric energy and is a new power source technique with high efficiency and low pollution. Among the fuel cells, DMFC (Direct Methanol Fuel Cell) is suitable for a usage in the small and portable power systems, because of advantages in safety, tiny and light. Compared with the Proton Exchange Membrane Fuel Cell (PEMFC), the DMFC adopts methanol as fuel and does not need pre-processor of fuel, as well as eliminate the installation and operation of a reformer. Those characterizations make the DMFC easier for minimization and safety. With the advantages of convenient carrying and more safety, the DMFC has been seen with full potential in the 3C applications. The PCB-based DMFC digital package is a novel manufacturing and assembly process, and there are very limited literatures discussing the effects of related parameters. Unlike the most DMFC and PEMFCs, adopting metal or graphite as the bipolar plate materials, which are limited in their expensive, heavy, and volume, the PCB-based DMFC digital package has the characteristics of low cost, low electric resistance light small size. This thesis focuses on the investigation of several important parameter effects on the cell performance during the PCB-based digital package process. Those discussed parameters include the compression ratio of the MEA contact, heating time, heating temperature, and hot pressing pressure. At the beginning of this research, a single DMFC was used for the individual parameter studies and the results were then applied to the design of the fixture of hot pressing. After that, the Taguchi’s experimental methods were adopted to discuss the parameter effects on the DMFC performance during the digital package process and figure out the best combination of parameter conditions. At the end of this paper, a PCB-based DMFC module was manufactured and assembled to make the experimental study and the result was also compared with the single cell one. Keywords :Fuel Cell, Direct Methanol Fuel Cell, Proton Exchange Membrane Fuel Cell, Bipolar Plate, Membrane Electrode Assembly, Printed Circuit Board