Design and Control of Battery Management System for Electric Vehicle

The battery management system (BMS) serves the purpose of controlling the functional limits of the battery packs, thermally and electrically, and is critical for accident protection. The BMS also helps in optimal operation of the battery pack, which helps to prolong the battery life, benefitting the lifecycle and the cost. This paper addresses the future challenges in BMS and focuses on the possible solutions. This paper encompasses cell balancing automation, which equalizes the voltage and SoC among the cells when the cells are at distinct SoC thereby improving the battery life, and SoC estimation, which estimates the approximate driving range of the electric vehicle. This paper focuses on the control of cell balancing function of battery management system, MATLAB model is designed performing the cell balancing of six cells for different states of charge values. A comprehensive technical review of the BMS is done and an evaluation of components and architecture of BMS is also presented along with the major simulations.