锂离子电池浮充电研究综述

doi:10.19799/j.cnki.2095-4239.2020.0253

摘要/Abstract

摘要：

锂离子电池由于能量密度高、循环寿命长和安全性能好，逐渐取代铅酸电池成为市场上的主流电池。同时锂电池在储能电站、通信基站、变电站等后备电源系统和常用笔记本电脑等各个领域也得到了广泛的应用。通过浮充电方式对锂离子电池进行能量补充是后备电池充电的一种常用方式，而长期的浮充电将使得电池内部结构发生变化，造成电池循环寿命减少，甚至引发安全性问题。本文从外部温度影响、浮充电压的差异、和电池组单体的不一致性三个方面，综述了不同因素对浮充性能的影响，以及浮充电后对锂离子电池的影响。便于优化储能锂离子电池的浮充条件，确保电池稳定运行下提高其使用寿命，以及对于储能锂离子电池的研究进展提供指导。

关键词: 锂离子电池, 浮充电, 温度, 电压, 不一致性

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

中图分类号:

D 480.40

尹　涛, 郑莉莉, 贾隆舟, 冯　燕, 王　栋, 戴作强. 锂离子电池浮充电研究综述[J]. 储能科学与技术, 2021, 10(1): 310-318.

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.

图/表 11

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