A mathematical lithium-ion battery model implemented in an electrical engineering simulation software

Abstract

This article presents some applications for our mathematical model of lithium-ion battery. This model is based on Newman's works, and includes migration and diffusion of species and charges in electrodes and electrolyte, electric double layer capacitance, and solid-electrolyte interface layer. Using electrical analogies of transport phenomena, it is directly implemented in standard simulation software used in electrical engineering. The paper recalls the fundamental model of lithium-ion battery. Then, it briefly explains how the analog model is obtained from mass and charge transport equations. At last, some examples of simulation are shown (lithium plating abacus, electrochemical impedance spectroscopy, including SEI) to demonstrate the advantages of our modeling method.