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Working Condition Real-Time Monitoring Model of Lithium Ion Batteries Based on Distributed Parameter System and Single Particle Model
Liang Huang,Chang Yao
Author NameAffiliationE-mail
Liang Huang School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China  
Chang Yao Information Center, National Natural Science Foundation of China, Beijing 100085, China cyao@bjtu.edu.cn 
Abstract:
Lithium ion batteries are complicated distributed parameter systems that can be described preferably by partial differential equations and a field theory. To reduce the solution difficulty and the calculation amount, if a distributed parameter system is described by ordinary differential equations (ODE) during the analysis and the design of distributed parameter system, the reliability of the system description will be reduced, and the systemic errors will be introduced. Studies on working condition real-time monitoring can improve the security because the rechargeable LIBs are widely used in many electronic systems and electromechanical equipment. Single particle model (SPM) is the simplification of LIB under some approximations, and can estimate the working parameters of a LIB at the faster simulation speed. A LIB modelling algorithm based on PDEs and SPM is proposed to monitor the working condition of LIBs in real time. Although the lithium ion concentration is an unmeasurable distributed parameter in the anode of LIB, the working condition monitoring model can track the real time lithium ion concentration in the anode of LIB, and calculate the residual which is the difference between the ideal data and the measured data. A fault alarm can be triggered when the residual is beyond the preset threshold. A simulation example verifies that the effectiveness and the accuracy of the working condition real-time monitoring model of LIB based on PDEs and SPM.
Key words:  Lithium ion battery  Distributed parameter system  Single particle model  Condition monitoring
FundProject:
基于分布参数系统和单粒子模型的锂离子电池工作状态实时监控模型
黄亮,姚畅
摘要:
提出了一种基于分布参数系统偏微分方程描述和单粒子模型的锂离子电池工作状态实时监控建模方法,能够实时跟踪锂离子电池阳极的锂离子密度和残差变化,并通过仿真实验验证了本文模型对锂离子电池工作状态故障报警的有效性和精确性.
关键词:  锂离子电池  分布参数系统  单粒子模型  工作状态监控
DOI:10.1063/1674-0068/29/cjcp1604063
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