Journal
ENERGY REPORTS
Volume 9, Issue -, Pages 28-33Publisher
ELSEVIER
DOI: 10.1016/j.egyr.2023.03.003
Keywords
Battery cell balancing; Wireless power transfer; Near-field coupling
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This paper proposes a near-field cell balancing method for batteries of higher capacity and power. The method utilizes wireless power transfer to balance battery cells, offering higher efficiency than conventional passive approaches and faster equalization than active approaches. This method is designed to meet the increasing demand for faster cell balancing associated with high-capacity and high-power batteries.
This paper proposes a near-field cell balancing method to be applied to batteries of higher capacity and power. This method involves a wireless power transfer to balance battery cells, which produces higher efficiency than conventional passive approaches, and faster equalization than active approaches. Cell balancing is a crucial function of the battery management system (BMS) that maintains the balance of charge and discharge between cells of individual batteries. Furthermore, this method is designed to meet the increasing demand for faster cell balancing associated with high-capacity and high-power batteries. We selected a serial-parallel configuration to minimize the technical concern for isolation, or energy transfer to unselected cells. Experiments were conducted with two battery cells, and voltage equalization accelerated by 51% when the proposed cell balancing approach was applied. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under theCCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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