A data-driven approach to define a mathematical model of the traction battery used in small class electric vehicles.
Keywords:
mathematical model, traction battery, SOC, electric vehicleAbstract
This paper presents a data-driven approach to develop a mathematical model of a traction battery used in small class electric vehicles. The methodology includes the analysis of experimental data, approximation of the electromotive force (EMF) and internal resistance dependencies on the state of charge (SOC) using regression analysis, and scaling of the model for a full battery considering series and parallel cell connections. The proposed model provides high prediction accuracy, which is confirmed by experimental test results. The obtained model can be applied to optimize the battery management of electric vehicles, to improve their energy efficiency and performance.
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