Application of self-adaptive temperature recognition in cold-start of an air-cooled proton exchange membrane fuel cell stack  

作　　者：Xianxian Yu Huawei Chang Junjie Zhao Zhengkai Tu Siew Hwa Chan 

机构地区：[1]School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]Energy Research Institute,Nanyang Technological University,50 Nanyang Avenue,637553 Singapore

出　　处：《Energy and AI》2022年第3期12-23,共12页能源与人工智能（英文）

基　　金：supported by the National Key Research and Development Program of China(No.2020YFB1506300);the National Natural Science Foundation of China(No.51806071);the Natural Science Foundation of Hubei Province(No.2020CFA040);Wuhan Applied Foundational Frontier Project(No.2020010601012205).

摘　　要：The Self-adaptive control of the temperature can achieve the start of fuel cell at different operating temperatures, which is very important for the successful cold-start of the air-cooled PEMFC. The temperature distribution characteristics during the cold-start process were analyzed based on adaptive temperature recognition control in this paper. Preheating model and cold-start model were established and the optimal balance between the hot air flow rate and the temperature required to promote a uniform temperature distribution in the stack was explored in the preheating stage. Finally, the non-equilibrium mass transfer, as well as the temperature rise in the catalyst layer and gas diffusion layer with different current densities, were analyzed in the start-up stage. The results indicate that the air-cooled PEMFC stack can be successfully started up at -40 ◦C within 10 min by means of external gas heating. The current density and air velocity have significant impacts on the temperature of aircooled PEMFC stack. Dynamic analysis of air-cooled PEMFCs and real-time monitoring are suitable for machine learning and self-adaptive control to set the operation parameters to achieve successful cold start. Optimize the matching of load current and cathode inlet speed to achieve thermal management in low temperature environment.

关 键 词：Proton exchange membrane fuel cell Air-cooled stack Metallic bipolar plate COLD-START Gas heating 

分 类 号：TM911.4[电气工程—电力电子与电力传动]