https://scholars.lib.ntu.edu.tw/handle/123456789/486668
標題: | Three-parameter modeling of nonlinear capacity fade for lithium-ion batteries at various cycling conditions | 作者: | Li, J.-F. Lin, Y.-S. Lin, C.-H. Chen, K.-C. KUO-CHING CHEN |
公開日期: | 2017 | 卷: | 164 | 期: | 12 | 來源出版物: | Journal of the Electrochemical Society | 摘要: | Existing methods for predicting the capacity fade of lithium ion batteries (LIBs) are typically limited to the description of cells under fixed charge/discharge (C/D) cycling conditions. The prediction requires a large amount of experimental data for various cycling environments to construct empirical equations or to obtain parameters in physical-based models. Based on the porous electrode theory, a semi-empirical model with three constant parameters is developed here. It is found that fading data at various temperatures collapse into a single curve on a newly proposed plot. This finding enables us to use a much smaller amount of cycle-life data to determine the values of these parameters, which sufficiently characterize the fading response under a broad range of cycling conditions. The prediction yielded from the model is confirmed by several scenarios with varying cycling conditions, such as temperature, depth of discharge, and C/D rate. A further prediction shows that different average C/D rates, which give rise to different cell-temperature histories, have a strong influence on the capacity degradation of an LIB. By introducing the average C/D rate, we analyze the capacity loss after 1500 cycles with the use of two types of charging protocols, from which two operational treatments are suggested. © 2017 The Electrochemical Society. All rights reserved. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/486668 | DOI: | 10.1149/2.1801712jes | SDG/關鍵字: | Battery management systems; Charging (batteries); Electric batteries; Electrodes; Forecasting; Secondary batteries; Capacity degradation; Constant parameters; Depth of discharges; Empirical equations; Physical-based models; Porous electrode theory; Semi-empirical modeling; Three-parameter models; Lithium-ion batteries |
顯示於: | 應用力學研究所 |
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