CHARACTERIZATION AND THERMAL BEHAVIOR OF BATTERY MODEL PARAMETERS

CAIO  L. G. DE S. ALVES; RAFAEL  DE MELO SILVA SANTOS; JUAN  MOISES MAURICIO VILLANUEVA; EULER  CÁSSIO TAVARES DE MACÊDO

doi:10.20906/CBA2022/383

CAIO L. G. DE S. ALVES Federal University of Paraíba
RAFAEL DE MELO SILVA SANTOS Universidade Federal da Paraíba
JUAN MOISES MAURICIO VILLANUEVA Universidade Federal da Paraíba
EULER CÁSSIO TAVARES DE MACÊDO Universidade Federal da Paraíba

DOI: https://doi.org/10.20906/CBA2022/383

Keywords: Lithium-ion, Battery, Electric model, Uncertainties, Parameter identification

Abstract

The Lithium-ion battery cell are electrochemical elements widely used in application that requires a high energy density and a compact element, all these characteristics are better implemented for electric vehicle applications. It is known that some factors are harmful to the battery degrading it faster and not being ecient as expected, one of the factor is the temperature. With the goal to know the battery behavior and to prevent possible failures, electric models of the battery are developed. Using an automatic setup to measure the quantities, it was made experimental procedures to dene the capacity behavior of the battery in relation to temperature, using a constant current to realize the experiment, and to dene the electric model parameters, doing the experiment with pulsed current, with these model parameters are possible to analyze the uncertainties associated to them making relation with temperature. Experimental results from the battery were obtained through the charge and discharge procedure for the temperature of 10C and 40C, determining the variations of the parameters of the battery in relation to the temperature. In this paper, it was possible to determine the minimal number of branches for electric model to require less computational efort, being analyzed the relation between the R-C parameters of the electric model with the temperature along the State-of-Charge (SoC), where we could concluded that the battery suffers losses in your capacity when it is used in low temperature which does not occur to high temperature.