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System design of lithium battery internal resistance measurement using LabVIEW
Author(s): Cun Chang; Tianjian Wu; Wanfu Yang; Hao Li; Zhonghan Hao; Qing Chang
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Paper Abstract

Lithium battery internal resistance is an important reference index to evaluate lithium battery performance. Since the mechanism of lithium battery internal resistance is complex and changeable, it cannot be directly measured in a general way. In this paper, an orthogonal vector phase locked amplifier, which uses the AC injection method and adopts the virtual instrument technology, Labview, as the platform, is developed to alleviate noise influence and phase difference of the traditional analog phase locked amplifier. The experiment results show that the system can achieve real-time and on-line measurement of lithium battery internal resistance with considerable accuracy. The experiment results also indicate that the system can accurately measure the internal resistance at the milliohm level with a high level of confidence.

Paper Details

Date Published: 7 March 2019
PDF: 8 pages
Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110534V (7 March 2019); doi: 10.1117/12.2524264
Show Author Affiliations
Cun Chang, Heilongjiang Univ. (China)
Tianjian Wu, Heilongjiang Univ. (China)
Wanfu Yang, Heilongjiang Univ. (China)
Hao Li, Heilongjiang Provincial Institute of Measurement & Verification (China)
Zhonghan Hao, East China Univ. of Science and Technology (China)
Qing Chang, Heilongjiang Univ. (China)


Published in SPIE Proceedings Vol. 11053:
Tenth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Jie Lin, Editor(s)

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