Numerical Simulation of Li-Ion Battery Using ECM Method

This document is a case study that presents a numerical simulation of Lithium-Ion (Li-Ion) batteries utilizing the Equivalent-Circuit Model (ECM) method. The primary objective is to develop a thermal model that enhances the understanding of the thermal behavior of Li-Ion batteries, particularly focusing on thermal management methods to improve efficiency. The study employs Ansys Fluent for the thermal modeling process, estimating the total heat generation rate, which is crucial for system-level numerical simulations. It discusses the impact of ambient temperature on heat generation and battery performance, conducting a parametric study across various temperature conditions and discharge currents. The document details the governing equations, boundary conditions, and meshing techniques used in the simulation. It also examines the influence of state of charge (SoC) and current density on heat generation, providing insights into the thermal dynamics of Li-Ion batteries under different operational scenarios.