Overview of research on float charging for lithium-ion batteries

doi:10.19799/j.cnki.2095-4239.2020.0253

Abstract

Abstract:

Lithium-ion batteries have gradually replaced lead-acid batteries to become the mainstream batteries on the market due to their high energy density, long cycle life and good safety performance. At the same time, lithium batteries have also been widely used in various fields such as energy storage power stations, communication base stations, substations and other backup power systems and commonly used notebook computers. Replenishing the energy of lithium-ion batteries by floating charging is a common way to charge backup batteries, and long-term floating charging will cause changes in the internal structure of the battery, resulting in reduced battery cycle life and even safety issues. This article summarizes the impact of different factors on the floating charge performance and the impact of the floating charge on the lithium-ion battery from three aspects: the influence of external temperature, the difference of float voltage, and the inconsistency of battery cells. It is convenient to optimize the floating charging conditions of energy storage lithium-ion batteries, to ensure that the battery life is increased under stable operation, and to provide guidance for the research progress of energy storage lithium-ion batteries.

Key words: lithium-ion battery, floating charge, temperature, voltage, inconsistency

CLC Number:

D 480.40

Tao YIN, Lili ZHENG, Longzhou JIA, Yan FENG, Dong WANG, Zuoqiang DAI. Overview of research on float charging for lithium-ion batteries[J]. Energy Storage Science and Technology, 2021, 10(1): 310-318.

Figures/Tables 11

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