Mathematical modeling of lithium-sulfur batteries

Modeling is the basis of research on lithium-sulfur batteries. The model can characterize the dynamic characteristics of lithium-sulfur batteries and provide references to theoretical research and applications. The model is important to managing and controlling the battery and related to its state estimation, such as the states of charge, health, and power. This chapter introduces related research on lithium-sulfur battery modeling. Electrochemical and equivalent circuit modeling are introduced, and the model parameters of the equivalent circuit modeling method are identified. This chapter first analyzes the electrochemical principles and mathematical aspects of the lithium-sulfur battery model. The equivalent circuit model of the lithium-sulfur battery is then introduced, including the resistance-capacitance model, Thevenin model, Partnership for a New Generation of Vehicles model, and others. Finally, parameter identification methods and modeling applications of battery models are introduced. This chapter provides a theoretical basis for the application of lithium-sulfur batteries.