期刊
JOURNAL OF POWER SOURCES
卷 224, 期 -, 页码 20-27出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.10.001
关键词
State of health; Lithium-ion battery; State of charge; Battery management system; Unscented Kalman filter; Support vector regression
Two novel methods to estimate the state of charge (SOC) and state of health (SOH) of a lithium-ion battery are presented. Based on a detailed deduction, a dual filter consisting of an interaction of a standard Kalman filter and an Unscented Kalman filter is proposed in order to predict internal battery states. In addition, a support vector machine (SVM) algorithm is implemented and coupled with the dual filter. Both methods are verified and validated by cell measurements in form of cycle profiles as well as storage and cycle ageing tests. A SOC estimation error below 1% and accurate resistance determination are presented. (C) 2012 Elsevier B.V. All rights reserved.
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