| 摘要 |
The present invention relates to a method for estimating the performance of a direct methanol fuel cell and, more specifically, to a method for estimating the performance of a direct methanol fuel cell capable of accurately estimating the performance of a direct methanol fuel cell and a crossover phenomenon by using an one-dimensional abnormal and non-isothermal numerical code. [Reference numerals] (AA) Start;(BB) End;(S110) Step of dividing a direct methanol fuel cell into a multi-layered structure with an anode gas diffusion layer (GDL), an anode micro-porous layer (MPL), an anode catalyst layer (CL), an electrolyte membrane (membrane), a cathode gas diffusion layer (GDL), a cathode microporous layer (MPL), and a cathode catalyst layer (CL),;(S120) Step of inputting at least one or more variations in a first module and initializing each variation;(S130) Third step of calculating each initialized variation in a second module;(S140) Fifth step of calculating current density of the multi-layered structure;(S150) Sixth step of calculating liquid saturation degree of the multi-layered structure in the second module;(S160) Fourth step of calculating methanol concentration of the multi-layered structure in the second module;(S170) Step of calculating liquid pressure equilibrium value of each boundary surface of the anode gas diffusion layer (GDL), the anode microporous layer (MPL), the anode catalyst layer (CL), the electrolyte membrane (membrane), the cathode gas diffusion layer (GDL), the cathode microporous layer (MPL), the cathode catalyst layer (CL) in the second module;(S180) Eighth step of calculating oxygen transfer value relative to an oxygen transfer process in the multi-layered structure in the second module;(S190) Ninth step of updating each variation initialized in the first module;(S200) Tenth step of determining whether or not results calculated in third to sixth steps are collected in the first module;(S210) Eleventh step of determining time inputted in the first module according to the tenth step, calculating the temperature increased by heat generated as time changes, and sequentially repeating the third step to the tenth step according to the temperature changed until the time inputted in the first module by returning to the third step caused by the temperature change of DMFC |
