Title :
A method for online capacity estimation of lithium ion battery cells using the state of charge and the transferred charge
Author :
Einhorn, M. ; Conte, F.V. ; Kral, C. ; Fleig, J.
Author_Institution :
Mobility Dept., AIT Austrian Inst. of Technol., Vienna, Austria
Abstract :
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.
Keywords :
battery management systems; lithium; secondary cells; battery management; lithium ion battery cell; online capacity estimation; state of charge; transferred charge; Batteries; Battery charge measurement; Current measurement; Estimation; Impedance; Temperature measurement; Voltage measurement; battery management; capacity estimation; lithium ion battery; state of charge;
Conference_Titel :
Sustainable Energy Technologies (ICSET), 2010 IEEE International Conference on
Conference_Location :
Kandy
Print_ISBN :
978-1-4244-7192-8
DOI :
10.1109/ICSET.2010.5684928
