A method for online capacity estimation of lithium ion battery cells using the state of charge and the transferred charge

A method for online capacity estimation of lithium ion battery cells using the state of charge and the transferred charge

In this article 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 met...

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Bibliographische Detailangaben
Hauptverfasser: Einhorn, M, Conte, F V, Kral, C, Fleig, J
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Batteries
Battery charge measurement
battery management
capacity estimation
Current measurement
Estimation
Impedance
lithium ion battery
state of charge
Temperature measurement
Voltage measurement
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Beschreibung
Zusammenfassung:In this article 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.
ISSN:2165-4387
DOI:10.1109/ICSET.2010.5684928