Simulation of Li-ion Battery using MATLAB-Simulink for Charging and Discharging

Abstract

The optimization of batteries has increased in EV and HEV applications out of which Li-ion batteries are widely used for green technology applications as an energy storage system due to its high power and energy density. In electric vehicle applications, drawbacks are observed during charging interval time on the storage system. In such situations, the multi-state charging is considered to be the ideal solution. This paper tells us about the state charging of lithium-ion battery and its criteria of charging/discharging for good battery life using MATLAB Simulink tool. The state-of-charge (SOC), measured and applied for measuring charging/discharging characteristics is an important parameter for defining the performance of a battery. Thus, accurate estimation of SOC is necessary which will protect the battery and prevent its overcharging and discharging. This will also help in improving the life span of the battery. For applications requiring higher efficiency, multi-state charging is applied.