Development of improved Li-ion battery model incorporating thermal and rate factor effects

Abstract

This paper presents development of an improved electrical circuit based Li-ion battery model using AMESim. This model considers charge extraction due to current, battery capacity, and effect of internal resistance and extends the thermal aspects which represent temperature rise in the core and crust. The thermal aspects that characterize the temperature rise in core and crust and its effects on the internal resistance and discharge rate factor affecting the terminal voltage of the battery along with the charge extracted are incorporated. The characteristics of the proposed model was compared with published data and showed good correlation.