Lithium-ion battery: A simplified modeling procedure and system simulation

Nowadays energy storage systems, such as batteries, are essential for electric vehicles and renewable energy sources. One of the important aspects is to model both the electrical and thermic battery behaviors. Another important aspect is to find a modeling procedure whereby the parameters of these models are found. In literature, different models and modeling procedures are present. This paper presents a simplified identification procedure applied to an electric model for lithium-ion batteries. This model takes into account the electrical behavior of the battery as a function of different factors, such as the state of discharge, discharge current and temperature. Experimental tests were carried out in order to characterize and test the electric model. Finally, some simulation tests were made in Matlab/Simulink to compare experimental and simulated results.