INTERNATIONAL CONFERENCE ON ENGINEERING TECHNOLOGIES (ICENTE’24) , Konya, Türkiye, 21 - 23 Kasım 2024, ss.200-205, (Tam Metin Bildiri)
Abstract-
With advancing technologies, energy demand is increasing
worldwide. However, it is impossible to find enough fossil fuels to meet this
energy demand. For this reason, studies on energy storage technologies have
increased. Along with these studies, battery technology has also developed. In
this way, electric vehicles have increased their popularity. Modeling is very important
to define the battery correctly in electric vehicles. In this study, the
thevenin model is taken as a reference for the lithiumion battery. A
lithium-ion battery is charged under constant current. Voltage values were
taken as a function of time. A time dependent voltage graph was created using
Excel. The thevenin equivalent circuit of the battery was extracted from the
charge graph. Using the obtained thevenin model, the charge curve was extracted
in MATLAB/Simulink. Finally, an exponential curve connected to the SoC was
created using the least squares method from the numerical analysis methods
Keywords - Energy Storage, Electric Vehicles, Lithium-Ion Batteries,
Battery Modeling.