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http://dx.doi.org/10.7471/ikeee.2014.18.3.298

Battery State of Charge Estimation Considering the Battery Aging  

Lee, Seung-Ho (Dept. of Electronic & IT Media Engineering, Seoul National University of Science & Technology)
Park, Min-Kee (Dept. of Electronic & IT Media Engineering, Seoul National University of Science & Technology)
Publication Information
Journal of IKEEE / v.18, no.3, 2014 , pp. 298-304 More about this Journal
Abstract
Proper operation of the battery powered systems depends on the accuracy of the battery SOC(State of Charge) estimation, therefore it is critical for those systems that SOC is accurately determined. The SOC of the battery is related to the battery aging and the SOC estimation methods without considering the aging of the battery are not accurate. In this paper, a new method that accurately estimate the SOC of the battery is proposed considering the aging of the battery. A mathematical model for the Battery SOC-OCV(Open Circuit Voltage) relationship is presented using Boltzmann equation and aging indicator is defined, and then the SOC is estimated combining the mathematical model and aging indicator. The proposed method takes the aging of the battery into consideration, which leads to an accurate estimation of the SOC. The simulations and experiments show the effectiveness of the proposed method for improving the accuracy of the SOC estimation.
Keywords
battery; state of charge; state of health; battery aging; estimation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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