Research on Filtering Method of Increment Capacity Analysis Curve of Ternary Lithium Ion Battery

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Qi, Zhang^1 ; Jian, Wu^1 ; Zhanguo, Wang^1 ; Yanru, Zhang^1 ; Biqiang, Mu^2

National Active Distribution Network Technology Research Center (NANTEC), Beijing Jiaotong University, Haidian District, Beijing

100044, China^1

Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Haidian District, Beijing

100044, China^2

关键词: Capacity analysis;    Different voltages;    Filtering method;    Gaussian process regression;    Physical structures;    Reaction process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012075/pdf
DOI  :  10.1088/1757-899X/486/1/012075

来源: IOP

【 摘 要 】

Increment Capacity Analysis method has been widely concerned by experts and scholars because it can analyze the battery chemical reaction without destroying the physical structure of the battery. However the inevitable noise on the capacity increment curve brings huge damage to the analysis of the battery reaction process. In this paper, the influence of different voltage intervals on the ICA curve is analyzed firstly, then a certain voltage interval is selected, and the capacity increment curve is filtered by Gaussian process regression and wavelet transform. Compared with the original unfiltered ICA curve, the proposed method is verified feasible.