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Simulation-Based Analysis of Equalization Algorithms on Active Balancing Battery Topologies for Electric Vehicles

  • Asadullah Khalid
  • Alexander Hernandez
  • Aditya Sundararajan
  • Arif I. SarwatEmail author
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1069)

Abstract

Determination of the cell electro-chemistry, topology, and application requirements are crucial to developing a battery management system for charge equalization in a series-connected stack of Lithium-ion (Li-ion) cells. The existing literature on topology categorization does not provide battery and battery model selection methodology for battery management system (BMS) development. To bridge this gap in the literature, this paper provides a unique simulation based analysis on the major steps required to build a BMS that include analysis of a variety of existing Lithium-ion cell electro-chemistries, equivalent models, equalization topologies and circuits. Equalization circuits and their variants are categorized based on components, topology, balancing time and configurations. Cell balancing simulations are then performed on a centralized and a distributed topology using an appropriate equivalent model identified by the analysis. In addition, the simulation also uses a unique cell equalization algorithm proposed in this paper. The results validate voltage and state of charge (SOC) equalization performance in terms of balancing time and energy efficiency. These factors play a crucial role in maintaining battery life and preventing thermal runaways in electric vehicles (EV) or energy storage systems (ESS).

Keywords

Equalization algorithm Parameter identification Electro-chemistry Balancing time Energy storage element SOC convergence 

Notes

Acknowledgments

The material published is a result of the research supported by the National Science Foundation under the Award number CNS-1553494.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Asadullah Khalid
    • 1
  • Alexander Hernandez
    • 1
  • Aditya Sundararajan
    • 1
  • Arif I. Sarwat
    • 1
    Email author
  1. 1.Florida International UniversityMiamiUSA

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