Electrochemical Impedance Spectroscopy Measurement of Lithium Battery Based on Lock-in amplifier

被引：0
|
作者：
Xu, Guanghao [1 ]
Duan, Ran [1 ]
Dong, Ming [1 ]
Ren, Ming [1 ]
Xie, Jiacheng [1 ]
Hu, Yizhuo [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat Power Equipment, 28 Xianning West Rd, Xian 710049, Shaanxi, Peoples R China
来源：
2019 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (CEIDP) | 2019年
关键词：
EIS; battery; lock-in amplifier; V/I conversion;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Electrochemical impedance spectroscopy (EIS) is a useful technique in research on lithium battery. EIS is often measured by electrochemical workstations whose price is extremely high. This paper proposed a new method for measuring EIS of lithium battery, which was based on lock-in amplifier and some auxiliary circuits. The lock-in amplifier can achieve measuring ultra-low frequency small signal and the auxiliary circuits can complete the expansion of the output current and avoid the influence of the output impedance of lock-in amplifier. This method can measure EIS of lithium batteries accurately while avoid using expensive equipment such as electrochemical workstation.
引用
收藏
页码：678 / 681
页数：4
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