A simple but effective analysis to calculate the performances achievable by a balancing circuit for series-connected lithium-ion batteries (i.e., the time required to equalise the battery and the energy lost during this process) is described in this paper. Starting from the simple passive technique, in which extra energy is dissipated on a shunt resistor, active techniques, aiming at an efficient energy transfer between battery cells, are investigated. The basic idea is to consider the balancing circuit as a DC/DC converter capable of transferring energy between its input and output with a certain efficiency and speed. As the input and output of the converter can be either a single cell or the entire battery pack, four main active topologies are identified: cell to cell, cell to pack, pack to cell and cell to/from pack (i.e., the combination of the cell to pack and pack to cell topologies when the converter is bidirectional). The different topologies are compared by means of statistical simulations. They clearly show that the cell to cell topology is the quickest and most efficient one. Moreover, the pack to cell topology is the least effective one and surprisingly dissipates more energy than the passive technique, if the converter efficiency is below 50%.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Performance comparison of active balancing techniques for lithium-ion batteries


    Contributors:

    Published in:

    Publication date :

    2014


    Size :

    7 Seiten, 15 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    Active balancing system of lithium cell batteries used in drive units of mining machinery

    Bartoszek, Sławomir / Jura, Jerzy / Stankiewicz, Krzysztof | TIBKAT | 2019

    Free access

    Balancing Lithium-Ion Batteries by Autonomous Charge Transfer Methodology

    Altemose, G. / European Space Agency | British Library Conference Proceedings | 2008


    Active and Autonomous Balancing System for Satellites Batteries

    Mosset, E. / European Space Agency | British Library Conference Proceedings | 2011