基于等效模型和多时间尺度扩展卡尔曼滤波的锂离子电池SOC预测  

SOC Prediction of Lithium-ion Batteries Based on Equivalent Circuit model and Multi-time Scale Extended Kalman Filter

作　　者：陈冰[1] 鲁刚 房红征[3,4] 张明敏[1] Chen Bing Lu Gang Fang Hongzheng Zhang Mingmin(College of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China Equipment Department of Navy,Beijing 100055,China Beijing Aerospace Measure ＆ Control Corp. Ltd. Beijing 100041,China Beijing Key Laboratory of High -speed Transport Intelligent Diagnostic and Health Management,Beijing 100041,China)

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]海军装备部,北京100055 [3]北京航天测控技术有限公司,北京100041 [4]北京市高速交通工具智能诊断与健康管理重点实验室,北京100041

出　　处：《计算机测量与控制》2017年第5期67-70,共4页Computer Measurement &Control

摘　　要：荷电状态(SOC)和最大可用电量估计是锂离子电池寿命预测中的两个最重要部分;然而与快速时变的SOC比较,最大可用电量的参数变化缓慢;文章提出了一个基于等效模型和多时间尺度的扩展卡尔曼滤波(EKF)预测算法对SOC和最大可用容量分别在不同时间尺度上进行估计,在宏观尺度上利用了SOC估计值作为观测量,更新最大可用电量;针对NCA/C卫星锂离子电池实验数据的仿真结果表明,提出的多时间尺度EKF预测算法与EKF联合估计算法相比,SOC和最大可用电量估计准确度更高,同时提高了计算效率。The state of charge(SOC)and the maximum available electricity estimation are two of the most important parts of satellite lithium-ion battery life prediction.However,compared with the fast time-varying SOC,the parameters of the maximum available power change slowly.It proposed a multi-time scale extended Kalman filter(EKF)prediction algorithm based-on the equivalent circuit model to estimate the SOC and the maximum available capacity at different time scales.The SOC estimation is used as an observation on the macroscopic scale to update the maximum available power.The simulation results of NCA/C lithium-ion battery show that the proposed multitime scale EKF prediction algorithm has higher accuracy of SOC and maximum available power estimation compared with tradtional EKF algorithm,and improves the computational efficiency.

关 键 词：SOC 最大可用电量 Thevenin等效电路模型 多时间尺度 EKF预测算法 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] V57[自动化与计算机技术—控制科学与工程]