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Batteries 2016, 2(4), 37; doi:10.3390/batteries2040037

Generalized Characterization Methodology for Performance Modelling of Lithium-Ion Batteries

Department of Energy Technology, Aalborg University, 9220 Aalborg East, Denmark
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Author to whom correspondence should be addressed.
Academic Editor: Sheng S. Zhang
Received: 30 September 2016 / Revised: 17 November 2016 / Accepted: 22 November 2016 / Published: 1 December 2016
(This article belongs to the Special Issue Lithium Ion Batteries)

Abstract

Lithium-ion (Li-ion) batteries are complex energy storage devices with their performance behavior highly dependent on the operating conditions (i.e., temperature, load current, and state-of-charge (SOC)). Thus, in order to evaluate their techno-economic viability for a certain application, detailed information about Li-ion battery performance behavior becomes necessary. This paper proposes a comprehensive seven-step methodology for laboratory characterization of Li-ion batteries, in which the battery’s performance parameters (i.e., capacity, open-circuit voltage (OCV), and impedance) are determined and their dependence on the operating conditions are obtained. Furthermore, this paper proposes a novel hybrid procedure for parameterizing the batteries’ equivalent electrical circuit (EEC), which is used to emulate the batteries’ dynamic behavior. Based on this novel parameterization procedure, the performance model of the studied Li-ion battery is developed and its accuracy is successfully verified (maximum error lower than 5% and a mean error below 8.5 mV) for various load profiles (including a real application profile), thus validating the proposed seven-step characterization methodology. View Full-Text
Keywords: lithium-ion (Li-ion) battery; characterization; methodology; performance modelling; electrochemical impedance spectroscopy; DC pulses; validation lithium-ion (Li-ion) battery; characterization; methodology; performance modelling; electrochemical impedance spectroscopy; DC pulses; validation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Stroe, D.-I.; Swierczynski, M.; Stroe, A.-I.; Knudsen Kær, S. Generalized Characterization Methodology for Performance Modelling of Lithium-Ion Batteries. Batteries 2016, 2, 37.

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