With the development of modern electronics and technology, batteries have become part of everyday life. Battery management systems (BMS) are used to ensure their optimal performance, often using different models of replacement circuits. The most common model in commercial BMS is the Thevenin circuit with two RC links. In this thesis, we investigated how two different parameterisation methods of this model affect its accuracy. We have created a virtual model that uses differential evolution to find the optimal system parameters. When parameterising with both methods, current pulses and constant current charging/discharging, we obtained good fits between the model and the experimental data.
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