期刊
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
卷 116, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.rser.2019.109464
关键词
Series battery packs; Equalization strategies; Equalization objectives; Equalization variables; Energy storage; Electric vehicles
资金
- NSF of China [51875054]
- Chinese Postdoctoral Science Foundation [2018M643404]
- Special Foundation of Chongqing Postdoctoral Science [XmT2018036]
Inconsistency in the internal parameters and external environments of lithium-ion cells after they are connected as a battery pack may greatly limit the pack's capacity, power capability, and lifetime. Equalization management systems (EMSs) are necessary to mitigate such inter-cell inconsistency. Due to the complexity of application scenarios and the cost of EMSs, the speed, accuracy, and stability of EMSs need to be comprehensively considered. Unlike the research on equalization circuit architectures, studies on equalization control strategies are far from mature. This paper, for the first time, presents a critical summary and analysis of currently available equalization strategies. They are elaborated and categorized based on the main components of a controller formulation, including equalization variables, equalization objectives, and equalization algorithms. Finally, some insights and thinking about technical challenges and opportunities for the development of equalization strategies are provided. This work could be beneficial to the selection and design of appropriate control strategies for different equalization applications. It spurs new expansive research routes and forward-looking visions for researchers and practitioners in this field.
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