Systematic Comparison of Active Balancing: A Model-Based Quantitative Analysis

A quantitative model-based comparison of ten active balancing circuits is presented for equalizing imbalanced cell energies of lithium-ion batteries. A mean current model approach for active balancing is used to describe energy transfers between battery cells for long charge/discharge operations. A Thévenin model for 96 battery cells is used as part of a mid-size electric vehicle. In quasi-static simulations, FTP75 driving cycles are continuously repeated until the first cell is discharged from initial full charge. Simulation results are compared for cases of new and aged cells with different capacity distributions concerning equalization speed and battery efficiency. The influence of control algorithms on results is investigated by comparing control approaches with voltage, state of charge, and charge capacities as control variables. The results of state of charge and charge capacities show their advantage over voltage-based balancing. The results of two detailed performance analysis for two specific cell distributions are confirmed by simulating two sets of 100 random cell charge capacity distributions for each balancing method and each control variable.

[1]  Francesco Borrelli,et al.  Balancing of battery networks via constrained optimal control , 2012, 2012 American Control Conference (ACC).

[2]  Dorin V. Cadar,et al.  An energy converter method for battery cell balancing , 2010, 33rd International Spring Seminar on Electronics Technology, ISSE 2010.

[3]  Werner Roessler,et al.  A cost optimized battery management system with active cell balancing for lithium ion battery stacks , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[4]  G Fiengo,et al.  Cell equalization in battery stacks through State Of Charge estimation polling , 2010, Proceedings of the 2010 American Control Conference.

[5]  Yuang-Shung Lee,et al.  Fuzzy controlled lithium-ion battery equalization with state-of-charge estimator , 2003, SMC'03 Conference Proceedings. 2003 IEEE International Conference on Systems, Man and Cybernetics. Conference Theme - System Security and Assurance (Cat. No.03CH37483).

[6]  Erik Schaltz,et al.  Multi-Objective Control of Balancing Systems for Li-Ion Battery Packs: A Paradigm Shift? , 2014, 2014 IEEE Vehicle Power and Propulsion Conference (VPPC).

[7]  G. A. Kobzev.  Switched-capacitor systems for battery equalization , 2000, Proceedings of the 6th International Scientific and Practical Conference of Students, Post-graduates and Young Scientists. Modern Techniques and Technology. MTT'2000 (Cat. No.00EX369).

[8]  Martin Lukasiewycz,et al.  Cyber-Physical Co-Simulation Framework for Smart Cells in Scalable Battery Packs , 2016, TODE.

[9]  S. Ben-Yaakov,et al.  Average-Current-Based Conduction Losses Model of Switched Capacitor Converters , 2013, IEEE Transactions on Power Electronics.

[10]  C. S. Moo,et al.  Dynamic charge equalisation for series-connected batteries , 2003 .

[11]  Gun-Woo Moon,et al.  A Modularized Charge Equalizer for an HEV Lithium-Ion Battery String , 2009, IEEE Transactions on Industrial Electronics.

[12]  Dirk Uwe Sauer,et al.  Diversion of Aging of Battery Cells in Automotive Systems , 2014, 2014 IEEE Vehicle Power and Propulsion Conference (VPPC).

[13]  Yuang-Shung Lee,et al.  Battery Equalization Using Bi-directional Cuk Converter in DCVM Operation , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[14]  Roberto Roncella,et al.  High-Efficiency Digitally Controlled Charge Equalizer for Series-Connected Cells Based on Switching Converter and Super-Capacitor , 2013, IEEE Transactions on Industrial Informatics.

[15]  T. Baumhöfer,et al.  Production caused variation in capacity aging trend and correlation to initial cell performance , 2014 .

[16]  Faisal H. Khan,et al.  A low-cost time shared cell balancing technique for future lithium-ion battery storage system featuring regenerative energy distribution , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[17]  Roberto Roncella,et al.  Performance comparison of active balancing techniques for lithium-ion batteries , 2014 .

[18]  Haifeng Dai,et al.  The application of flyback DC/DC converter in Li-ion batteries active balancing , 2009, 2009 IEEE Vehicle Power and Propulsion Conference.

[19]  A. Emadi,et al.  Battery balancing methods: A comprehensive review , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.

[20]  D. Dane Quinn,et al.  Design of novel charge balancing networks in battery packs , 2013 .

[21]  Francesco Borrelli,et al.  Performance evaluation of battery balancing hardware , 2013, 2013 European Control Conference (ECC).

[22]  Soren Hohmann,et al.  Comparison of Active Battery Balancing Systems , 2014, 2014 IEEE Vehicle Power and Propulsion Conference (VPPC).

[23]  Yuang-Shung Lee,et al.  Individual Cell Equalization for Series Connected Lithium-Ion Batteries , 2006, IEICE Trans. Commun..

[24]  Mehdi Ferdowsi,et al.  Double-Tiered Switched-Capacitor Battery Charge Equalization Technique , 2008, IEEE Transactions on Industrial Electronics.

[25]  Soeren Hohmann,et al.  Optimal Cell Balancing with Model-based Cascade Control by Duty Cycle Adaption , 2014 .

[26]  Matthieu Dubarry,et al.  Origins and accommodation of cell variations in Li‐ion battery pack modeling , 2010 .

[27]  Yangsheng Xu,et al.  Fuzzy Control for Battery Equalization Based on State of Charge , 2010, 2010 IEEE 72nd Vehicular Technology Conference - Fall.

[28]  Jean-Christophe Crebier,et al.  Optimized structure for next-to-next balancing of series-connected lithium-ion cells , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[29]  Chunbo Zhu,et al.  Super-Capacitor Stacks Management System With Dynamic Equalization Techniques , 2007, IEEE Transactions on Magnetics.

[30]  Enrique Romero-Cadaval,et al.  Battery equalization active methods , 2014 .

[31]  Phil Mellor,et al.  Comparison of passive cell balancing and active cell balancing for automotive batteries , 2011, 2011 IEEE Vehicle Power and Propulsion Conference.

[32]  Alois Amstutz,et al.  CAE tools for quasi-static modeling and optimization of hybrid powertrains , 1999 .

[33]  Markus Einhorn,et al.  Improved Performance of Serially Connected Li-Ion Batteries With Active Cell Balancing in Electric Vehicles , 2011, IEEE Transactions on Vehicular Technology.

[34]  Gun-Woo Moon,et al.  A new battery equalizer based on buck-boost topology , 2007, 2007 7th Internatonal Conference on Power Electronics.

[35]  Jianqiu Li,et al.  On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 1. Equalization based on remaining charging capacity estimation , 2014 .

[36]  Francesco Borrelli,et al.  Constrained flow control in storage networks: Capacity maximization and balancing , 2013, Autom..

[37]  Faisal Altaf,et al.  Simultaneous Thermal and State-of-Charge Balancing of Batteries: A Review , 2014, 2014 IEEE Vehicle Power and Propulsion Conference (VPPC).

[38]  Stephen W. Moore,et al.  2001-01-0959 A Review of Cell Equalization Methods for Lithium Ion and Lithium Polymer Battery Systems , 2001 .

[39]  Joeri Van Mierlo,et al.  Passive and active battery balancing comparison based on MATLAB simulation , 2011, 2011 IEEE Vehicle Power and Propulsion Conference.

[40]  Jianqiu Li,et al.  On-line equalization for lithium-ion battery packs based on charging cell voltages: Part 2. Fuzzy logic equalization , 2014 .

[41]  Chin-Sien Moo,et al.  Charge equalization for series-connected batteries , 2003 .

[42]  Philip T. Krein,et al.  Switched capacitor system for automatic series battery equalization , 1997, Proceedings of APEC 97 - Applied Power Electronics Conference.

[43]  Matthieu Dubarry,et al.  From single cell model to battery pack simulation for Li-ion batteries , 2009 .

[44]  Bo-Hyung Cho,et al.  Selective flyback balancing circuit with improved balancing speed for series connected Lithium-ion batteries , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.