Performance-degradation model for Li4Ti5O12-based battery cells used in wind power applications

摘要

Energy storage systems based on Lithium-ion batteriesrnhave the potential to mitigate the negative impact of windrnpower grid integration on the power system stability, which isrncaused by the characteristics of the wind. This paper presentsrna performance model for a Li4Ti5O12/LiMO2 battery cell.rnFor developing the performance model an EIS-based electricalrnmodelling approach was followed. The obtained model is able tornpredict with high accuracy charge and discharge voltage profilesrnfor different ages of the battery cell and for different charging/rndischarging current rates. Moreover, the ageing behaviour ofrnthe battery cell was analysed for the case of accelerated cyclingrnageing with a certain mission profile.