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首页> 外文期刊>Energy Technology: Generation,Conversion,Storage,Distribution >Analysis of Lithium-Ion Battery Models Based on Electrochemical Impedance Spectroscopy
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Analysis of Lithium-Ion Battery Models Based on Electrochemical Impedance Spectroscopy

机译：基于电化学阻抗谱的锂离子电池模型分析

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摘要

This work is an overview of various equivalent circuits (ECs) containing various degrees of detail. The ECs are evaluated in terms of model accuracy and parameterization time for the systematic assignment of an equivalent circuit to application fields. For this purpose, impedance spectra were measured using electrochemical impedance spectroscopy at different states of charge, health and temperatures. Then the parameters of the EC were extracted using the least-squares method and the Levenberg-Marquardt algorithm. After comparing the simulated to the measured impedance spectrum, a review and assignment of equivalent circuits for potential applications is given. Simple equivalent circuits with a series resistor and a maximum of two resistance-capacitance (RC) elements are ideal for simulations with lower dynamics. Equivalent circuits with up to five RC elements or even a constant-phase element (CPE) are promising for simulating highly dynamic processes. By using RCPE elements the impedance spectrum can be modeled with the highest accuracy, which is why this type of model should be used for diagnostic purposes.
机译：这项工作是对包含各种详细程度的各种等效电路（EC）的概述。根据模型准确性和参数化时间对EC进行评估，以便将等效电路系统地分配给应用领域。为此，使用电化学阻抗谱在不同的荷电状态，健康状态和温度下测量阻抗谱。然后使用最小二乘法和Levenberg-Marquardt算法提取EC的参数。在将仿真的阻抗谱与测得的阻抗谱进行比较之后，给出了针对潜在应用的等效电路的回顾和分配。具有串联电阻和最多两个电阻电容（RC）元素的简单等效电路非常适合于低动态仿真。具有多达五个RC元件甚至一个恒相元件（CPE）的等效电路有望用于模拟高度动态的过程。通过使用RCPE元件，可以以最高的精度对阻抗谱建模，这就是为什么将这种类型的模型用于诊断目的的原因。

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