Real-Time Overcharge Warning and Early Thermal Runaway Prediction of Li-Ion Battery by Online Impedance Measurement

被引：94
作者：
Lyu, Nawei [1 ]
Jin, Yang [1 ]
Xiong, Rui [2 ]
Miao, Shan [1 ]
Gao, Jinfeng [1 ]
机构：
[1] Zhengzhou Univ, Res Ctr Grid Energy Storage & Battery Applicat, Sch Elect Engn, Zhengzhou 450001, Peoples R China
[2] Beijing Inst Technol, Dept Vehicle Engn, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2022年 / 69卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Impedance; Temperature measurement; Impedance measurement; Electrodes; Batteries; Current measurement; Accidents; Battery safety; lithium-ion battery (LIB); online impedance measurement; overcharge warning; thermal runaway prediction; INTERNAL TEMPERATURE ESTIMATION; PROPAGATION; HEALTH; MODEL; STATE; POWER;
D O I：
10.1109/TIE.2021.3062267
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A lithium-ion battery has advantages such as high energy density and long calendar life, but it suffers from the risk of thermal runaway. Overcharge-induced thermal runaway accidents hold a considerable percentage. This article discovers that the slope of the dynamic impedance in the frequency band of 30-90 Hz turns positive from negative when the cell just starts to overcharge and proposes the theoretical explanation. Taking 70 Hz impedance as an example, the thermal runaway accident can be successfully avoided by cutting off the charging when the slope turns positive from negative during charging. The warning time is 580 s ahead of the thermal runaway. This feature is easy to identify and requires no complex mathematical models and parameters. Besides, the prediction method based on this feature can be conducted by using an online dynamic impedance measurement device designed by us, which is suitable for large-scale applications. Thus, the overcharge-induced thermal runaway accidents can be avoided.
引用
收藏
页码：1929 / 1936
页数：8
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