Speaker
Description
This study aimed to evaluate and compare the performance of lithium-ion cells under normal and cryogenic conditions by testing battery cells in accordance with IEC standard 62660-1:2018. The experiments were conducted using SAMSUNG (CR18650Z/M lithium-ion cells) under two test conditions: normal conditions and cryogenic soaking (30 and 60 minutes). Data were collected before and after soaking over time intervals of 1, 3, 7, and 10 days. The results indicated that in Part 1, cryogenic conditions reduced the performance of lithium-ion cells compared to normal conditions, with average peaks of 0.26%, 0.06%, 1.60%, 0.27%, and 0.31%, respectively. In Part 2, cryogenic conditions caused a maximum decrease in coulombic efficiency and exhibited a similar trend in energy efficiency, with average reductions of 0.50%, 0.79%, and 1.00%, respectively. Lastly, in Part 3, cryogenic conditions showed no further significant changes compared to normal conditions, suggesting stability over time.
Keywords: Battery, Lithium-ion cell, Cryogenic process, Liquid Nitrogen, IEC 62660-1:2018
