Electrochemical impedance spectroscopy state of charge measurement for batteries using power converter modulation

Shady Gadoue, Kuan-Wen Chen, Paul Mitcheson, Vladimir Yufit, Nigel Brandon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper will demonstrate the concept of a new, low-cost, on-line technique for monitoring battery state of health (SOH) and state of charge (SOC) using electrochemical impedance spectroscopy (EIS). A particular focus will be electric vehicles (EVs), where the SOC accuracy over existing battery management systems (BMS) will improve range prediction accuracy, although the proposed technique is also applicable to other electrochemical energy storage devices. While currently there exist few methods to measure the battery state of charge online, these methods are generally categorized as “indirect” methods which are prone to errors due to environmental changes and require additional hardware/costs for implementation. In this paper the EIS excitation signal will be generated by the system's existing power converter without requiring extra hardware but only requires software upgrade. The main objective of the proposed method is to minimize the impact on the main operation of the power converter in the system
Original languageEnglish
Title of host publication2018 9th International Renewable Energy Congress (IREC)
PublisherIEEE
Number of pages5
ISBN (Electronic)978-1-5386-0998-9
ISBN (Print)978-1-5386-0999-6
DOIs
Publication statusPublished - 24 May 2018
Event2018 9th International Renewable Energy Congress (IREC) - Hammamet, Tunisia
Duration: 20 Mar 201822 Mar 2018

Publication series

Name2018 9th International Renewable Energy Congress (IREC)
PublisherIEEE
ISSN (Print)2378-3451

Conference

Conference2018 9th International Renewable Energy Congress (IREC)
CountryTunisia
CityHammamet
Period20/03/1822/03/18

Bibliographical note

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  • Cite this

    Gadoue, S., Chen, K-W., Mitcheson, P., Yufit, V., & Brandon, N. (2018). Electrochemical impedance spectroscopy state of charge measurement for batteries using power converter modulation. In 2018 9th International Renewable Energy Congress (IREC) (2018 9th International Renewable Energy Congress (IREC)). IEEE. https://doi.org/10.1109/IREC.2018.8362459