Charge and Discharge Behavior Modelling and Simulation of Li-Ion Batteries Using QUCS-S Software

The paper presents an improved SPICE model of a Li-ion battery cell, simulating its charge and discharge behavior during an accelerated aging procedure.The model is based on our earlier developed model, presented in a research paper.The SPICE model is implemented in the QUCS-S open-source software.In the model, problems related to the convergence of the simulation process have been mostly eliminated.The model is implemented using real measurement data for standard Li-ion batteries with automotive applications.The developed simulation model includes models of the measuring equipment used in the accelerated aging procedure, in addition to the battery model.Results of model verification are presented, including error analysis.