电力系统保护与控制2025，Vol.53Issue(5)：145-155,11.DOI:10.19783/j.cnki.pspc.240619
基于一致性算法的锂电池组内单体锂电池SOH主动均衡方案
An active SOH balancing scheme based on a consensus algorithm for individual lithium-ion cells in a battery packs
摘要
Abstract
To address the limitations of existing state of health(SOH)balancing strategies for series-connected lithium-ion cells,such as the need for a centralized controller,extensive global communication,and high system costs,this paper proposes an active SOH balancing strategy based on a consensus algorithm.The intrinsic relationship among SOH parameters,depth of discharge(DOD),and active power is analyzed,and an active power allocation and control algorithm switching rules are designed.A consensus algorithm is used to solve the average value of DOD,achieving SOH balancing without requiring a centralized controller and reducing communication signal requirements.This approach enhances battery capacity utilization efficiency and lowers maintenance costs.Finally,Matlab/Simulink simulations demonstrate that the proposed scheme can achieve self-balancing of SOH within a series-connected lithium-ion battery pack,even with load variations,communication interruptions,increasing number of battery cells,and DOD measurement errors.关键词
锂电池/功率控制/主动均衡/健康状态/放电深度/一致性算法Key words
lithium-ion battery/power control/active balancing/state of health/depth of discharge/consensus algorithm引用本文复制引用
吴青峰,杨凯义,刘立群,朱彦军,薄利明,杨杰豹..基于一致性算法的锂电池组内单体锂电池SOH主动均衡方案[J].电力系统保护与控制,2025,53(5):145-155,11.基金项目
This work is supported by the General Program of Basic Research Technology of Shanxi Province(No.202203021221153). 山西省基础研究技术面上项目资助(202203021221153) （No.202203021221153）
阳泉市应用基础研究计划项目资助(2022JH059) （2022JH059）
