Accuracy analysis of the State-of-Charge and remaining run-time determination for lithium-ion batteries

V. Pop, H.J. Bergveld, P.H.L. Notten, J.H.G. Op het Veld, Paulus P.L. Regtien

Research output: Contribution to journalArticleAcademicpeer-review

35 Citations (Scopus)

Abstract

This paper describes the various error sources in a real-time State-of-Charge (SoC) evaluation system and their effects on the overall accuracy in the calculation of the remaining run-time of a battery-operated system. The SoC algorithm for Li-ion batteries studied in this paper combines direct measurement of the Electro-Motive Force (EMF) and bookkeeping systems. The major error source appears to be the value of the EMF, which changes with temperature, with previous (dis)charging conditions and due to aging over time. It is shown that with a new method for modelling the SoC–EMF relationship and by predicting the battery’s State-of-Charge-left, an error of less than 1 min or 1% in the remaining runtime can be obtained.
Original languageUndefined
Pages (from-to)1131-1138
Number of pages8
JournalMeasurement : journal of the International Measurement Confederation (Ned.)
Volume42
Issue number8
DOIs
Publication statusPublished - 2008

Keywords

  • CE-MI: Formerly in EWI-MI
  • Li-ion batteriesState-of-ChargeOverpotential
  • Overpotential
  • Li-ion batteries
  • EWI-20021
  • IR-67916
  • State-of-Charge

Cite this

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title = "Accuracy analysis of the State-of-Charge and remaining run-time determination for lithium-ion batteries",
abstract = "This paper describes the various error sources in a real-time State-of-Charge (SoC) evaluation system and their effects on the overall accuracy in the calculation of the remaining run-time of a battery-operated system. The SoC algorithm for Li-ion batteries studied in this paper combines direct measurement of the Electro-Motive Force (EMF) and bookkeeping systems. The major error source appears to be the value of the EMF, which changes with temperature, with previous (dis)charging conditions and due to aging over time. It is shown that with a new method for modelling the SoC–EMF relationship and by predicting the battery’s State-of-Charge-left, an error of less than 1 min or 1{\%} in the remaining runtime can be obtained.",
keywords = "CE-MI: Formerly in EWI-MI, Li-ion batteriesState-of-ChargeOverpotential, Overpotential, Li-ion batteries, EWI-20021, IR-67916, State-of-Charge",
author = "V. Pop and H.J. Bergveld and P.H.L. Notten and {Op het Veld}, J.H.G. and Regtien, {Paulus P.L.}",
year = "2008",
doi = "10.1016/j.measurement.2008.03.009",
language = "Undefined",
volume = "42",
pages = "1131--1138",
journal = "Measurement : journal of the International Measurement Confederation (Ned.)",
issn = "0263-2241",
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Accuracy analysis of the State-of-Charge and remaining run-time determination for lithium-ion batteries. / Pop, V.; Bergveld, H.J.; Notten, P.H.L.; Op het Veld, J.H.G.; Regtien, Paulus P.L.

In: Measurement : journal of the International Measurement Confederation (Ned.), Vol. 42, No. 8, 2008, p. 1131-1138.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Accuracy analysis of the State-of-Charge and remaining run-time determination for lithium-ion batteries

AU - Pop, V.

AU - Bergveld, H.J.

AU - Notten, P.H.L.

AU - Op het Veld, J.H.G.

AU - Regtien, Paulus P.L.

PY - 2008

Y1 - 2008

N2 - This paper describes the various error sources in a real-time State-of-Charge (SoC) evaluation system and their effects on the overall accuracy in the calculation of the remaining run-time of a battery-operated system. The SoC algorithm for Li-ion batteries studied in this paper combines direct measurement of the Electro-Motive Force (EMF) and bookkeeping systems. The major error source appears to be the value of the EMF, which changes with temperature, with previous (dis)charging conditions and due to aging over time. It is shown that with a new method for modelling the SoC–EMF relationship and by predicting the battery’s State-of-Charge-left, an error of less than 1 min or 1% in the remaining runtime can be obtained.

AB - This paper describes the various error sources in a real-time State-of-Charge (SoC) evaluation system and their effects on the overall accuracy in the calculation of the remaining run-time of a battery-operated system. The SoC algorithm for Li-ion batteries studied in this paper combines direct measurement of the Electro-Motive Force (EMF) and bookkeeping systems. The major error source appears to be the value of the EMF, which changes with temperature, with previous (dis)charging conditions and due to aging over time. It is shown that with a new method for modelling the SoC–EMF relationship and by predicting the battery’s State-of-Charge-left, an error of less than 1 min or 1% in the remaining runtime can be obtained.

KW - CE-MI: Formerly in EWI-MI

KW - Li-ion batteriesState-of-ChargeOverpotential

KW - Overpotential

KW - Li-ion batteries

KW - EWI-20021

KW - IR-67916

KW - State-of-Charge

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JO - Measurement : journal of the International Measurement Confederation (Ned.)

JF - Measurement : journal of the International Measurement Confederation (Ned.)

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