Batteries, Vol. 7, Web pages 51: Comparative Study of Equivalent Circuit Models Performance in Four Common Lithium-Ion Batteries: LFP, NMC, LMO, NCA
Batteries doi: 10. 3390/batteries7030051
Authors: Manh-Kien Tran Andre DaCosta Anosh Mevawalla Satyam Panchal Michael Fowler
Lithium-ion (Li-ion) electric batteries are an important component of energy storage systems used in various applications such as electric vehicles and portable electronics. There are plenty of chemistries of Li-ion battery power, but LFP, NMC, LMO, and NCA are 4 commonly used types. Within order for the electric battery applications to operate safely and effectively, battery modeling is very important. The equivalent circuit model (ECM) is a battery design often used in the particular battery management system (BMS) in order to and control Li-ion batteries. In this research, experiments were performed in order to investigate the performance associated with three different ECMs (1RC, 2RC, and 1RC along with hysteresis) on four Li-ion battery chemistries (LFP, NMC, LMO, and NCA). The results indicated that all of three models are functional for the four types of Li-ion chemistries, with lower errors. It was also discovered that the ECMs tend to perform better in powerful current profiles compared to non-dynamic ones. Overall, the best-performed model for LFP and NCA was the particular 1RC with hysteresis ECM, while the most suited design for NMC and LMO was the 1RC ECM. The results from this particular study showed that different ECMs will be suited regarding different Li-ion battery chemistries, which should be a key factor to be considered in real-world battery and BMS applications.