基于AIC准则的锂离子电池高精度分段电路模型  

High-precision Segmented Circuit Model of Lithium-ion Batteries Based on AIC Criteria

作　　者：封居强 孙亮东 伍龙[1] 卢俊[2] Feng Juqiang;Sun Liangdong;Wu Long;Lu Jun(Huainan Normal University,Huainan 232038,China;Huainan Institution of Coal Mining Electronic Technology,Huainan 232002,China)

机构地区：[1]淮南师范学院,安徽淮南232038 [2]淮南市矿用电子技术研究所,安徽淮南232002 [3]淮南师范学院机械与电器工程学院,安徽淮南232038

出　　处：《廊坊师范学院学报（自然科学版）》2022年第1期24-29,36,共7页Journal of Langfang Normal University(Natural Science Edition)

基　　金：安徽省高校自然科学研究重点项目(KJA2020A0640);淮南市科技局科技计划项目(2021A249);淮南师范学院科研创新团队(XJTD202009);淮南师范学院校级项目(2019hsjy55)。

摘　　要：针对单一等效电路模型表征锂离子电池特性不准确、全时段不一致、鲁棒性较差的问题,提出一种高精度的分段模型。基于Simulink构建了五种等效电路模型,采用混合动力脉冲特性实验辨识模型参数。基于AIC信息准则判定充电、放电和搁置等阶段和不同SOC处最佳模型。在DST动态应用测试工况下,将模型与二阶RC、三阶RC和内阻模型仿真比较。结果显示:采用分段模型最大误差至少降低22%、平均误差至少降低32%、均方差仅为0.058,表明该模型具有较高的精度和稳定性。This paper proposes a high-precision segmented model aiming at the problems of inaccurate characterization,inconsistency throughout the whole period,and poor robustness of lithium-ion battery characteristics of a single equivalent circuit model.There are five equivalent circuit models constructed based on Simulink,and the model parameters are identified using hybrid impulse characteristic experiments.The best models are determined based on AIC information criteria at different SOC and stages of charging,discharging and shelving.The model is compared with the second-order RC,third-order RC and internal resistance models under the DST dynamic application test condition.The results show that the maximum error is reduced by at least 22%,the mean error is reduced by at least 32%,and the mean square error is only 0.058,which indicates that the model has high accuracy and stability.

关 键 词：分段模型 HPPC测试 DST测试 等效电路模型 

分 类 号：TP14[自动化与计算机技术—控制理论与控制工程]