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Article: State-of-charge determination from EMF voltage estimation: Using impedance, terminal voltage, and current for lead-acid and lithium-ion batteries

TitleState-of-charge determination from EMF voltage estimation: Using impedance, terminal voltage, and current for lead-acid and lithium-ion batteries
Authors
KeywordsC rate
Electromotive force (EMF) voltage
Impedance
Lead-acid battery
Lithium-ion battery
State of charge (SOC)
Terminal voltage
Issue Date2007
PublisherI E E E. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.html
Citation
Ieee Transactions On Industrial Electronics, 2007, v. 54 n. 5, p. 2550-2557 How to Cite?
AbstractState-of-charge (SOC) determination is an increasingly important issue in battery technology. In addition to the immediate display of the remaining battery capacity to the user, precise knowledge of SOC exerts additional control over the charging/discharging process, which can be employed to increase battery life. This reduces the risk of overvoltage and gassing, which degrade the chemical composition of the electrolyte and plates. The proposed model in this paper determines the SOC by incorporating the changes occurring due to terminal voltage, current load, and internal resistance, which mitigate the disadvantages of using impedance only. Electromotive force (EMF) voltage is predicted while the battery is under load conditions; from the estimated EMF voltage, the SOC is then determined. The method divides the battery voltage curve into two regions: 1) the linear region for full to partial SOC and 2) the hyperbolic region from partial to low SOC. Algorithms are developed to correspond to the different characteristic changes occurring within each region. In the hyperbolic region, the rate of change in impedance and terminal voltage is greater than that in the linear region. The magnitude of current discharge causes varying rates of change to the terminal voltage and impedance. Experimental tests and results are presented to validate the new models. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/145456
ISSN
2015 Impact Factor: 6.383
2015 SCImago Journal Rankings: 3.285
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorColeman, Men_HK
dc.contributor.authorLee, CKen_HK
dc.contributor.authorZhu, Cen_HK
dc.contributor.authorHurley, WGen_HK
dc.date.accessioned2012-02-23T12:10:36Z-
dc.date.available2012-02-23T12:10:36Z-
dc.date.issued2007en_HK
dc.identifier.citationIeee Transactions On Industrial Electronics, 2007, v. 54 n. 5, p. 2550-2557en_HK
dc.identifier.issn0278-0046en_HK
dc.identifier.urihttp://hdl.handle.net/10722/145456-
dc.description.abstractState-of-charge (SOC) determination is an increasingly important issue in battery technology. In addition to the immediate display of the remaining battery capacity to the user, precise knowledge of SOC exerts additional control over the charging/discharging process, which can be employed to increase battery life. This reduces the risk of overvoltage and gassing, which degrade the chemical composition of the electrolyte and plates. The proposed model in this paper determines the SOC by incorporating the changes occurring due to terminal voltage, current load, and internal resistance, which mitigate the disadvantages of using impedance only. Electromotive force (EMF) voltage is predicted while the battery is under load conditions; from the estimated EMF voltage, the SOC is then determined. The method divides the battery voltage curve into two regions: 1) the linear region for full to partial SOC and 2) the hyperbolic region from partial to low SOC. Algorithms are developed to correspond to the different characteristic changes occurring within each region. In the hyperbolic region, the rate of change in impedance and terminal voltage is greater than that in the linear region. The magnitude of current discharge causes varying rates of change to the terminal voltage and impedance. Experimental tests and results are presented to validate the new models. © 2007 IEEE.en_HK
dc.languageengen_US
dc.publisherI E E E. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.htmlen_HK
dc.relation.ispartofIEEE Transactions on Industrial Electronicsen_HK
dc.subjectC rateen_HK
dc.subjectElectromotive force (EMF) voltageen_HK
dc.subjectImpedanceen_HK
dc.subjectLead-acid batteryen_HK
dc.subjectLithium-ion batteryen_HK
dc.subjectState of charge (SOC)en_HK
dc.subjectTerminal voltageen_HK
dc.titleState-of-charge determination from EMF voltage estimation: Using impedance, terminal voltage, and current for lead-acid and lithium-ion batteriesen_HK
dc.typeArticleen_HK
dc.identifier.emailLee, CK:cklee@eee.hku.hken_HK
dc.identifier.authorityLee, CK=rp01580en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TIE.2007.899926en_HK
dc.identifier.scopuseid_2-s2.0-44449105395en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-44449105395&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue5en_HK
dc.identifier.spage2550en_HK
dc.identifier.epage2557en_HK
dc.identifier.isiWOS:000249841600021-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridColeman, M=24334321500en_HK
dc.identifier.scopusauthoridLee, CK=24537405500en_HK
dc.identifier.scopusauthoridZhu, C=7403440134en_HK
dc.identifier.scopusauthoridHurley, WG=7102840628en_HK
dc.identifier.citeulike7748480-

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