Title :
A Method for Online Capacity Estimation of Lithium Ion Battery Cells Using the State of Charge and the Transferred Charge
Author :
Einhorn, Markus ; Conte, Fiorentino Valerio ; Kral, Christian ; Fleig, Juergen
Author_Institution :
Mobility Dept., Austrian Inst. of Technol. (AIT), Vienna, Austria
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.
Keywords :
lithium; secondary cells; Li; battery cell online capacity estimation method; current pulse test cycle; state of charge; transferred charge; Batteries; Battery charge measurement; Current measurement; Estimation; Impedance; System-on-a-chip; Voltage measurement; Battery management; capacity estimation; lithium ion (Li-ion) battery; state of charge;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2011.2180689
