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Applied State of Health Estimation Methods for Lithium-ion Batteries
Linköping University, Department of Electrical Engineering, Vehicular Systems.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The ongoing shift towards a sustainable transportation sector is a hot topic. Lithiumion battery technology has become a key element in electrification due to its highenergy density and favourable electrical properties. The non-measurable chargeandhealth states of a battery are desirable to estimate for safety, performanceand economic reasons. Alelion Energy Systems AB is looking to improve thestate of health estimation method for their battery systems and this thesis providesa decision basis in the form of a literature study, comparison, developmentand validation of methods. The outcome of the work is a recommendation of aself-developed estimation method named the slope defined capacity trend analysismethod. To estimate the state of health (remaining capacity of the cell), themethod takes advantage of changes in the polarization curve during charging asthe battery cell ages. Alelion is intending to implement the patent pending slopedefined capacity trend analysis method.

Place, publisher, year, edition, pages
2019. , p. 59
Keywords [en]
Litium-ion State of health battery batteries Estimation method Alelion
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-157392ISRN: LiTH-ISY-EX--19/5226--SEOAI: oai:DiVA.org:liu-157392DiVA, id: diva2:1322864
External cooperation
Alelion Energy Systems AB
Subject / course
Vehicular Systems
Presentation
2019-06-04, 12:23 (English)
Supervisors
Examiners
Available from: 2019-06-12 Created: 2019-06-11 Last updated: 2019-06-12Bibliographically approved

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Applied State of Health Methods for Lithium-ion Batteries(1764 kB)42 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf