在这篇文献中，作者指出结合电芯膨胀法是电极健康状态评估和诊断的强大工具。 与电压测量相比，随着电芯的老化，可逆膨胀的变化更加明显，这导致在数据范围缩小的情况下对电芯健康状态进行更高置信度的估计。 此外，为估计电极健康状态而开发的机械模型能够捕获在不同温度、充电速率、放电深度和压力等各种条件下的电压和膨胀演变。
incorporating the cell expansion is a powerful tool for electrode specific health estimation and diagnostics. We showed that the changes in the reversible expansion as the cell ages are more pronounced compared to the voltage measurements, which leads to a higher-confidence estimation of cell health parameters with a reduced data range. Moreover, the mechanistic model developed for electrode state of health estimation was able to capture the voltage and expansion evolution under variety of conditions such as temperature, charging rate, depth of discharge, and pressure.
Reversible and Irreversible Expansion of Lithium-Ion Batteries Under a Wide Range of Stress Factors
Peyman Mohtat2,1, Suhak Lee2,1, Jason B. Siegel3,1 and Anna G. Stefanopoulou3,1
Published 19 October 2021 • © 2021 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited
, , Citation Peyman Mohtat et al 2021 J. Electrochem. Soc. 168 100520DOI 10.1149/1945-7111/ac2d3e
这里讲的电芯膨胀厚度测定法是否有效？我们继续探索。
