动力锂电池剩余使用寿命影响因素分析

doi:10.3976/j.issn.1002-4026.2021.03.008

Shandong Science ›› 2021, Vol. 34 ›› Issue (3): 49-53.doi: 10.3976/j.issn.1002-4026.2021.03.008

• Energy and Power • Previous Articles Next Articles

Analysis of factors affecting the remaining service life of power lithium battery

SUN Xi-quan¹，HOU En-guang^2*

1.Weihai Huancui education and teaching research and training center， Weihai 264200，China;2. School of Rail Transportation, Shandong Jiaotong University, Jinan 250357, China

Received:2020-08-13 Online:2021-06-20 Published:2021-06-07

Abstract

Abstract: To effectively evaluate the remaining service life of a power lithium battery system, key factors affecting its remaining service life must be accurately obtained. In this paper, the current of the battery during charging and discharging, temperature, and real-time voltage were determined as the key factors. The influence of each factor on the remaining service life of the power lithium battery was analyzed using the principal component analysis method to perform a quantitative analysis. The values of each factor were collected during the processes of repeated charging and discharging cycle. Through the verification and comparison of the remaining service life prediction, it was observed that the cumulative contribution rate of the first five factors accountted for 99% (the error range was within 3%) and the cumulative contribution rate of the first four factors accountted for 90% (the error range was within 4%).

Key words: power lithium battery, remaining service life, principal component analysis;contribution rate

CLC Number:

TM 912.1

SUN Xi-quan, HOU En-guang. Analysis of factors affecting the remaining service life of power lithium battery[J].Shandong Science, 2021, 34(3): 49-53.

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Analysis of factors affecting the remaining service life of power lithium battery

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