Battery Management System Using An Active Balancing Equalization Technique Based On Single Inductor Topology

Energy storage systems are essential for meeting demand when it arises in the present period,where energy demand is increasing at an exponential rate.With a growing requirement to store electrical energy,rechargeable batteries are gaining popularity.Due to its performance qualities,lithium-ion(Li-ion)technology is superior to other rechargeable battery technologies.However,Li-ion batteries have a tendency to heat up and negatively impact their performance under unfavorable charging and discharging conditions and/or variations in internal characteristics,which leads to a shorter life cycle.In battery packs that take the problem of cell imbalance into consideration,the process of cell balancing plays a significant role.This research introduces a model of an automated battery balancing circuit that employs a single inductor alongside a logic controller based on State of Charge(SOC).The study evaluates the circuit’s effectiveness under static,charging,and discharging modes.The proposed approach’s main benefit is that it achieves the fastest equalization time by using a constant inductor current controlled by the SOC-based logic controller to regulate the switching operations.In this research,four lithium-ion cells are balanced by connecting them in series.the algorithm has been developed and simulated in MATLAB to describe how the balance is achieved.