유한요소법을 이용한 고분자전해질연료전지 기체확산층의 응력분포 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 23; no. 5; pp. 468 - 475
• Main Authors: 김철현(Chul Hyun Kim), 손영준(Young Jun Sohn), 박구곤(Gu Gon Park), 김민진(Min Jin Kim), 이종욱(Jong Uk Lee), 김창수(Chang Soo Kim), 최유송(Yu Song Choi), 조성백(Sung Baek Cho)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2012
• Subjects: 기계공학; 가스켓; 체결압력; PEMFC; 엔드판; Gasket; Clamping force; Gas diffusion Layer; 고분자전해질연료전지; DOE; End plate; 실험계획법; 기체확산층
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2012.23.5.468

A proper stacking force and assembly are important to the performance of fuel cell. Improper assembly pressure may lead to leakage of fuels and high interfacial contact resistance, excessive assembly pressure may result in damage to the gas diffusion layer and other components. The pressure distribution of gas diffusion layer is important to make interfacial contact resistance less for stack performance. To analyze the influence of design parameter factors for pressure distribution, and to optimize stack design, DOE (Design of Experiment) was used for polymer electrolyte membrane fuel cell stack pressure test. As commonly known, the higher clamping force improves the fuel cell stack performance. However, non-uniformity of stress distribution is also increased. It shows that optimization between clamping force and stress distribution is needed for well designed structure of fuel cell stack. In this study, stack design optimization method is suggested by using FEM (Finite Element Methode) and DOE for light-weighted fuel cell stack.