Maximum Fast-Charging Current Estimation Algorithm Considering Temperature of Lithium-ion Batteries in Electrical Vehicles

This paper proposes a thermal modeling method and a real-time maximum fast-charging current estimation algorithm to manage the temperature of the Lithium-ion battery in electrical vehicles. The proposed modeling method has a simple structure and high accuracy by experimentally identifying the parameters with the curve fitting method. Based on the proposed model, the maximum fast-charging current is estimated in real-time by reflecting the cooling system and the ambient temperature. The feasibility of the proposed algorithm is experimentally verified through the Lithium-ion batteries manufactured for the electric vehicles.