锂电池双层均衡电路的模糊控制方法

Fuzzy Control Method for Double Layer Equalization Circuit of Lithium Battery

摘要: 随着新能源汽车的快速发展，电池组均衡管理成为关键技术挑战之一。传统均衡方法存在功耗高、效率低、成本高等问题，难以满足电动汽车对电池性能的严格要求。为此，文章提出了一种基于模糊控制的双层Buck-Boost均衡拓扑电路，旨在提升均衡效率和能量利用率。该电路通过双层结构设计，实现了电池组内和组间的高效能量传递，显著缩短了均衡时间。文章详细分析了电路工作原理，并通过MATLAB/Simulink仿真验证了其有效性。仿真结果表明，该方案能够有效均衡电池组的荷电状态，并在实验中验证了其优越性。与传统单层Buck-Boost电路相比，双层电路在均衡速度、能量利用率和成本效益方面表现更优。模糊控制算法的引入进一步提升了系统的智能化水平。

Abstract: With the rapid development of new energy vehicles, battery pack balance management has become one of the key technical challenges. Traditional balancing methods have problems such as high power consumption, low efficiency, and high cost, which make it difficult to meet the strict requirements of electric vehicles for battery performance. Therefore, this paper proposes a double-layer Buck-Boost equalization topology circuit based on fuzzy control, which aims to improve the equalization efficiency and energy utilization. The circuit is designed with a double-layer structure to achieve efficient energy transfer within and between battery packs, significantly shortening the equilibrium time. In this paper, the working principle of the circuit is analyzed in detail, and its effectiveness is verified by MATLAB/Simulink simulation. The simulation results show that the proposed scheme can effectively balance the state of charge of the battery pack, and its superiority is verified in experiments. Compared to traditional single-layer Buck-Boost circuits, double-layer circuits perform better in terms of equalization speed, energy efficiency, and cost-effectiveness. The introduction of a fuzzy control algorithm further improves the intelligence level of the system.