Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics
AbstractLithium-ion batteries are increasingly used in mobile applications where mechanical vibrations and shocks are a constant companion. There is evidence both in the academic and industrial communities to suggest that the electrical performance and mechanical properties of the lithium-ion cells of an electric vehicle (EV) are affected by the road-induced vibration. However, only a few studies related to the effects of vibration on the degradation of electrical performance of lithium-ion batteries have been approached. Therefore, this paper aimed to investigate the effects of vibration on the DC resistance, 1C capacity and consistency of NCR18650BE lithium-ion cells. Based on mathematical statistics, the method changes of the DC resistance and the capacity of the cells both before and after the test were analyzed with a large sample size. The results identified that a significant increase in DC resistance was observed as a result of vibration at the 95% confidence level, while typically a reduction in 1C capacity was also noted. In addition, based on a multi-feature quantity, a clustering algorithm was adopted to analyze the effect of vibration on cell consistency; the results show that the cell consistency had deteriorated after the vibration test. View Full-Text
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Zhang, L.; Ning, Z.; Peng, H.; Mu, Z.; Sun, C. Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics. Appl. Sci. 2017, 7, 802.
Zhang L, Ning Z, Peng H, Mu Z, Sun C. Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics. Applied Sciences. 2017; 7(8):802.Chicago/Turabian Style
Zhang, Lijun; Ning, Zhansheng; Peng, Hui; Mu, Zhongqiang; Sun, Changyan. 2017. "Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics." Appl. Sci. 7, no. 8: 802.
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