Estimation of the lead-acid battery initial state of charge with experimental validation

This paper presents a novel method for the estimation of the lead-acid battery initial state of charge (SOC) using the battery impedance measurement. The initial SOC is a crucial value used in the commonly used Coulomb counter. An experimental test bench for battery characterization and impedance measurement is built using CompactRio and Labview software. A very simple electrical circuit is proposed and designed allowing the determination of the initial SOC. Mathematical formulas are derived allowing obtaining a good estimation of the initial SOC. The simulation results are validated experimentally.

[1]  Wei Zhao,et al.  Integrated photovoltaic-battery converter design for dc power system , 2009, 2009 Australasian Universities Power Engineering Conference.

[2]  Wilson Eberle,et al.  A high-performance single-phase AC-DC power factor corrected boost converter for plug in hybrid electric vehicle battery chargers , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[3]  L. T. Lam,et al.  The UltraBattery—A new battery design for a new beginning in hybrid electric vehicle energy storage , 2009 .

[4]  Phatiphat Thounthong,et al.  Energy management of fuel cell/battery/supercapacitor hybrid power source for vehicle applications , 2009 .

[5]  W.G. Hurley,et al.  State of charge determination in a lead-acid battery: combined EMF estimation and Ah-balance approach , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[6]  Roger A. Dougal,et al.  A Compact Digitally Controlled Fuel Cell/Battery Hybrid Power Source , 2006, IEEE Transactions on Industrial Electronics.

[7]  Min Chen,et al.  Accurate electrical battery model capable of predicting runtime and I-V performance , 2006, IEEE Transactions on Energy Conversion.

[8]  Chunbo Zhu,et al.  State-of-Charge Determination From EMF Voltage Estimation: Using Impedance, Terminal Voltage, and Current for Lead-Acid and Lithium-Ion Batteries , 2007, IEEE Transactions on Industrial Electronics.

[9]  Bernard Davat,et al.  Energy Management of a Fuel Cell/Supercapacitor/Battery Power Source for Electric Vehicular Applications , 2011, IEEE Transactions on Vehicular Technology.

[10]  Joeri Van Mierlo,et al.  SUBAT: An assessment of sustainable battery technology , 2006 .

[11]  M. Becherif,et al.  Advantages of variable DC bus voltage for Hybrid Electrical vehicle , 2010, 2010 IEEE Vehicle Power and Propulsion Conference.

[12]  Ziyad M. Salameh,et al.  A mathematical model for lead-acid batteries , 1992 .

[13]  Pavol Bauer,et al.  Energy Storage and Power Management for Typical 4Q-Load , 2008, IEEE Transactions on Industrial Electronics.

[14]  M. Becherif,et al.  Design and sizing of a stand-alone recharging point for battery electrical vehicles using photovoltaic energy , 2011, 2011 IEEE Vehicle Power and Propulsion Conference.

[15]  M. Becherif,et al.  Electrical vehicle hybridized by supercapacitors , 2010, 2010 IEEE International Energy Conference.

[16]  Chaitali Chakrabarti,et al.  Maximizing the Lifetime of Embedded Systems Powered by Fuel Cell-Battery Hybrids , 2009, IEEE Trans. Very Large Scale Integr. Syst..