期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2021
卷号：3
期号：9
页码：1817-1828
DOI：10.35629/5252-030916511654
语种：English
出版社：IJAEM JOURNAL
摘要：Currently, lithium-ion batteries are widely applied in many fields, requiring a large capacity, stable, flexible and safe battery supply. To meet these requirements, a lithium-ion battery pack is often connected from many cells, including series to increase voltage and parallel to increase capacity. However, due to the different charging/discharging processes and working temperatures of the lithiumion battery cells, the State of change imbalance between the cells in series leads to the State of change imbalance. This paper presents a method for estimating the State of change of a lithium-ion battery using an extended kalman filter. First, an ESC model of a lithium-ion battery was built to describe the charge/discharge dynamics of a lithium-ion battery. Based on the equations of state will determine the parameters of the enhanced self – correcting model, then use a kalman filter to observe the State of change of lithium-ion battery.
