| Title |
Comparison Study of Degradation Parameters Based on Incremental Calculation for Lithium-Ion Batteries under Slow and Fast Charging Conditions |
| Authors |
Yeon-Ho Choi ; Chung-Kyo In ; Jae-Jung Yun |
| DOI |
http://doi.org/10.5207/JIEIE.2024.38.3.233 |
| Keywords |
Differential thermal voltammetry; Fast charging; Incremental capacity analysis; Lithium-ion battery; Slow charging |
| Abstract |
When estimating the state of health(SOH) of a battery using a data-driven methods, the quality of the degradation parameter reflecting capacity fade has a significant impact on the estimation performance. In general, lithium-ion batteries operate under various conditions, and the quality of the degradation parameters varies accordingly. Therefore, the quality of degradation parameters must be verified under various conditions. In this paper, incremental calculation-based degradation parameters were extracted and analyzed under the slow and fast charging conditions of the battery. Incremental capacity analysis (ICA) and differential thermal voltammetry (DTV) were used as methods to extract degradation parameters. As a result of analyzing the extracted degradation parameters, it was confirmed that various high-quality degradation parameters can be extracted under slow charging conditions, but it is difficult to extract high-quality degradation parameters under fast charging conditions. |