SPICE modeling of the Li-ion battery pack’s charge behavior using QUCS-S software

The paper studies SPICE modeling of a Li-ion battery pack, specifically its charge behavior. For modeling the nonlinear relationship between current and voltage during charge, a method suitable for implementation in the QUCS-S open-source software environment is proposed. Real measured data from the charge process of standard Li-ion batteries with automotive application were used for the modeling. Through software processing of these data, the parameters necessary for the creation of the models were extracted. Model verification results are presented.