Analyzing the battery thermal behaviour under Sri Lankan driving and ambient conditions

Abstract

On par with the technological advancements, the usage of electric vehicles (EVs) has been significantly prevalent in most parts of the world, even in the developing third world countries. During the study, it focusses on the battery electric vehicles (BEVs) and an analysis on the thermal behavior of the battery of a BEV is performed. A two-way analysis is conducted since both theoretical approach and the simulation-based approach are utilized. The thermal profile of the battery of a BEV is analyzed against the modelled localized driving pattern, i.e., Colombo Metropolitan Driving Cycle and when the analysis is performed, local ambient temperature conditions have been used. Functional relationships have been developed between the tractive power and the power generated from the battery and the thermal profile which is determined theoretically is compared against the simulation-based battery thermal profile which is generated using MATLAB Simscape development environment. Significant similarities are witnessed between the theoretical plots and the plots which are generated by the simulations whereas certain discrepancies have also been identified and critically analyzed.