Electronic Load for Parameter Characterization in Equivalent Circuit Models of Lithium-Ion Batteries

Suelen Bampi; Gierri Waltrich; Anderson Vaccari

doi:10.18618/REP.e202521

Authors

Suelen Bampi Universidade Federal de Santa Catarina https://orcid.org/0009-0002-5329-5140
Gierri Waltrich Universidade Federal de Santa Catarina https://orcid.org/0000-0003-0968-8975
Anderson Vaccari Vale (Brazil)

DOI:

https://doi.org/10.18618/REP.e202521

Keywords:

Electronic Load, Parameter Characterization, Equivalent Circuit Models, State of Charge, Extended Kalman Filter

Abstract

The applications and implemented volume of lithium-ion batteries have been gaining momentum each year. Aiming to contribute to the development of research in this area, this paper presents the design and implementation of an electronic load focused on characterizing parameters inherent to equivalent circuit models (ECM). ECMs are commonly applied for estimating the State of Charge (SoC), State of Health (SoH), and Remaining Useful Life (RUL) of lithium batteries. In this paper, an electrical design of an electronic load was implemented and validated through laboratory instrumentation to obtain characteristic data from a lithium titanate cell. The data from the tests performed on the cell were used as input for a SoC estimation algorithm based on the Extended Kalman Filter (EKF) to help corroborate the prototype's performance. The results comprise the performance of the electronic load, the results associated with the parameterization tests of the lithium cells, and the results obtained for the cell’s SoC estimation using the EKF.

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Author Biographies

Suelen Bampi, Universidade Federal de Santa Catarina

electrical engineer from the Regional University of the Alto Uruguai and Missões (2019) and a master in power electronics from the Federal University of Santa Catarina (2023). Areas of interest include lithium-ion battery modeling, renewable energies, and power electronics. Currently working as a researcher at CPQD Foundation within the energy systems solutions area, focusing on lithium battery modeling and algorithms.

Gierri Waltrich, Universidade Federal de Santa Catarina

holds a bachelor's degree (2007) and a master's degree (2009) in Electrical Engineering from the Federal University of Santa Catarina (UFSC) and a Ph.D. (2013) in Electrical Engineering from Eindhoven University of Technology (The Netherlands), specializing in power electronics. Currently, he is a tenured professor in the Department of Mechanical Engineering at the UFSC Technological Center in Florianópolis, working with the research group named the Laboratory of Instrumentation and Automation (LABMETRO) and the Power Electronics Institute (INEP). He is also a permanent faculty member of the Graduate Program in Electrical Engineering (PPGEEL) and the Graduate Program in Mechanical Engineering (POSMEC) at UFSC in Florianópolis. His main research areas are electric vehicles, multilevel converters, DC-DC, DC-AC, and AC-AC converters, smart grids, and measurement means & methods.

Anderson Vaccari, Vale (Brazil)

bachelor’s degree in electrical and Electronic Engineering from the Federal University of Espírito Santo (2001), specialization in Software Engineering from the State University of Campinas (2003), and a master's degree in Aeronautical and Mechanical Engineering from the Aeronautics Institute of Technology (2004). Areas of expertise include development, structuring, and improvement of processes and maintenance strategies focused on the prediction and prescription of failures in locomotives. Currently, he is a master engineer at Vale S.A.

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