Analysing the performance of improved active balancing circuits in lithium-ion battery packs

An essential aspect of battery management in electric vehicles and other applications, cell balancing ensures that each cell in a battery pack maintains a consistent state of charge (SOC), enhancing longevity and performance while reducing safety hazards. The research offers a systematic analysis of the performance of a buck-boost converter-based optimised active cell balancing circuit. The research introduces a novel approach to active balancing circuits, combining advanced control algorithms with high-efficiency power electronic components to achieve faster and more efficient performance. Simulation studies are undertaken in MATLAB-Simscape to estimate the effectiveness of the cell balancing model. The proposed Circuit performance across different types of loads displays slight variations in results. For R load balancing occurs in 176.5 seconds at 91.5% SOC, reaching 100% SOC in 279.5 seconds. RL load balances in 172.5 seconds at 91.1% SOC, reaching full charge in 279 seconds, and RLC load balances in 171.1 seconds at 91% SOC, stretches 100% SOC in 278.5 seconds. The research offers significant perspectives on the design and implementation of high-performance active balancing circuits, which lay the foundation for more reliable and efficient battery packs.