基于Buck-Boost的锂离子电池组分层均衡研究  

Research on Layered Equalization of Lithium-Ion Battery Pack Based on Buck-Boost

作　　者：徐元中[1] 郭纯 吴铁洲[1] 徐思云 XU Yuanzhong;GUO Chun;WU Tiezhou;XU Siyun(Hubei Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage,Hubei University of Technology,Wuhan Hubei 430068,China)

机构地区：[1]湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室,湖北武汉430068

出　　处：《电子器件》2023年第5期1422-1428,共7页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(51677058);湖北省技术创新专项重大项目(2018AA056)。

摘　　要：为了消除不一致性对电池组使用寿命和可用容量的影响,提高均衡速度,设计了基于开关电感式的Buck-Boost分层均衡拓扑。以单体电池SOC作为均衡变量,采用平均值差值比较法和极差相结合的均衡方法,对电池组进行逐层均衡。分别采用8节和9节锂离子电池在MATLAB/Simulink实验平台做了设计的分层均衡仿真实验,同时将其与传统基于Buck-Boost单层均衡和双层均衡方案进行对比分析,经实验证明,所设计的均衡拓扑可以提高均衡速度和能量转移效率。In order to eliminate the influence of inconsistency on the service life and usable capacity of battery pack and improve the equalization speed,a buck boost hierarchical equalization topology based on switching inductance is designed.Taking the SOC of single battery as the equilibrium variable,the battery pack is balanced layer by layer by using the average value difference comparison method and the range method.The layered equalization simulation experiment designed is carried out on the MATLAB/Simulink experimental platform with 8 and 9 lithium-ion batteries respectively.At the same time,it is compared with the traditional single-layer equalization and double-layer equalization schemes based on buck boost.The experiments show that the equalization topology designed can improve the equalization speed and energy transfer efficiency.

关 键 词：锂离子电池组 分层均衡 均衡速度 能量转移效率 

分 类 号：TM762[电气工程—电力系统及自动化] TP391.9[自动化与计算机技术—计算机应用技术]