Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module. / Jensen, Søren Højgaard; Engelbrecht, Kurt.

In: Electrochemical Society. Journal, Vol. 159, No. 6, 2012, p. A791-A797.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

APA

CBE

MLA

Vancouver

Author

Jensen, Søren Højgaard; Engelbrecht, Kurt / Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module.

In: Electrochemical Society. Journal, Vol. 159, No. 6, 2012, p. A791-A797.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{1dfee95cace54f9ea5ac3947c8737de4,
title = "Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module",
publisher = "Electrochemical Society, Inc.",
author = "Jensen, {Søren Højgaard} and Kurt Engelbrecht",
note = "Copyright The Electrochemical Society, Inc. [2012]. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).",
year = "2012",
doi = "10.1149/2.088206jes",
volume = "159",
number = "6",
pages = "A791--A797",
journal = "Electrochemical Society. Journal",
issn = "0013-4651",

}

RIS

TY - JOUR

T1 - Measurements of Electric Performance and Impedance of a 75 Ah NMC Lithium Battery Module

A1 - Jensen,Søren Højgaard

A1 - Engelbrecht,Kurt

AU - Jensen,Søren Højgaard

AU - Engelbrecht,Kurt

PB - Electrochemical Society, Inc.

PY - 2012

Y1 - 2012

N2 - Detailed characterization of battery modules is necessary to construct reliable models that incorporate performance related aspects <br/>of the modules such as thermodynamics, electrochemical reaction kinetics and degradation mechanisms. Charge-discharge curves, <br/>temperature and battery impedance measurements can provide information about these aspects. Charge-discharge curves can be used <br/>to measure the battery open circuit voltage and the internal resistance. Temperature measurements provide information about the <br/>thermodynamic reactions and impedance spectra yield detailed information about the reaction kinetics. In this paper we present the <br/>measurement methods used to examine the internal resistance, the capacity and the impedance of a 75 Ah NMC battery module. <br/>In order to measure the impedance of the battery module and of the individual cells in the module, we combine the single sine <br/>technique and the Laplace transformed excitation signal technique which each have pros and cons. By combining the two impedance <br/>measurement techniques we are able to reduce the measurement time by a factor of 20 relative to ordinary single-sine measurements. <br/>Further we use the impedance measurements to calculate the overvoltage as a function of state of charge and the difference between <br/>charging overvoltage and discharging overvoltage and compare it with measurements. <br/>©2012 The Electrochemical Society

AB - Detailed characterization of battery modules is necessary to construct reliable models that incorporate performance related aspects <br/>of the modules such as thermodynamics, electrochemical reaction kinetics and degradation mechanisms. Charge-discharge curves, <br/>temperature and battery impedance measurements can provide information about these aspects. Charge-discharge curves can be used <br/>to measure the battery open circuit voltage and the internal resistance. Temperature measurements provide information about the <br/>thermodynamic reactions and impedance spectra yield detailed information about the reaction kinetics. In this paper we present the <br/>measurement methods used to examine the internal resistance, the capacity and the impedance of a 75 Ah NMC battery module. <br/>In order to measure the impedance of the battery module and of the individual cells in the module, we combine the single sine <br/>technique and the Laplace transformed excitation signal technique which each have pros and cons. By combining the two impedance <br/>measurement techniques we are able to reduce the measurement time by a factor of 20 relative to ordinary single-sine measurements. <br/>Further we use the impedance measurements to calculate the overvoltage as a function of state of charge and the difference between <br/>charging overvoltage and discharging overvoltage and compare it with measurements. <br/>©2012 The Electrochemical Society

U2 - 10.1149/2.088206jes

DO - 10.1149/2.088206jes

JO - Electrochemical Society. Journal

JF - Electrochemical Society. Journal

SN - 0013-4651

IS - 6

VL - 159

SP - A791-A797

ER -