A Method for Online Capacity Estimation of Lithium Ion Battery Cells Using the State of Charge and the Transferred Charge

Markus Einhorn, Fiorentino Valerio Conte, Christian Kral, Jürgen Fleig

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, a method to estimate the capacity of individual lithium ion battery cells during operation is presented. When having two different states of charge of a battery cell as well as the transferred charge between these two states, the capacity of the battery cell can be estimated. The method is described in detail and validated on a battery cell with a current pulse test cycle. It is then applied to a real-life cycle; the accuracy is analyzed and discussed.
Original languageEnglish
Pages (from-to)736-741
Number of pages6
JournalIEEE Transactions on Industry Applications
Publication statusPublished - 2012

Research Field

  • Not defined

Keywords

  • Battery management
  • capacity estimation
  • lithium ion (Li-ion) battery
  • state of charge

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