Model-based simultaneous optimization of multiple design parameters for lithium-ion batteries for maximization of energy density

摘要

A model-based procedure is applied to the optimization of design parameters for porous electrodes that are commonly used in advanced batteries such as lithium-ion systems. The approach simultaneously optimizes the battery design variables of electrode porosities and thickness for maximization of the energy drawn for an applied current, cutoff voltage, and total time of discharge. The results show reasonable improvement in the specific energy drawn from the lithium-ion battery when the design parameters are simultaneously optimized. Model simulation and multiparameter optimization were facilitated by the increased computational efficiency achieved from the use of an orthogonal collocation-based reformulated model.