储能科学与技术 ›› 2018, Vol. 7 ›› Issue (2): 194-202.doi: 10.12028/j.issn.2095-4239.2017.0169

• 研究及进展 • 上一篇    下一篇

锂离子电池一致性筛选研究进展

王莉，谢乐琼，张干，何向明   

  1. 1清华大学核能与新能源技术研究院，北京100084；2华东锂电技术研究院，江苏 张家港215600
  • 收稿日期:2017-11-24 修回日期:2017-12-29 出版日期:2018-03-01 发布日期:2018-03-01
  • 通讯作者: 何向明，研究员，研究方向为先进二次电池及材料化学，E-mail：hexm@tsinghua.edu.cn。
  • 作者简介:王莉（1977—），女，博士，副研究员，研究方向为能源材料，E-mail：wang-l@tsinghua.edu.cn
  • 基金资助:
    科技部国际合作项目（2016YFE0102200），国家自然科学基金项目（U1564205）和北京市青年英才项目（YETP0157）。

Research progress in the consistency screening of Li-ion batteries

WANG Li, XIE Leqiong, ZHANG Gan, HE Xiangming   

  1. 1Institute of Nuclear Energy and New Energy Technology, Tsinghua University, Beijing 100084, China; 2Huadong Institute of Lithium Ion Battery, Zhangjiagang 215600, Jiangsu, China
  • Received:2017-11-24 Revised:2017-12-29 Online:2018-03-01 Published:2018-03-01

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摘要： 锂离子电池因综合性能优良，近年来在移动储能和固定储能领域的应用发展迅速。当多个单体电池通过串并联组成电池模组时，不仅电池组的能量低于电池单体能量的加和，电池组的寿命也明显低于单体电池的水平。除了电池运行环境不均匀（如温度场）外，电池组内部电池单体之间微小的不一致性也是造成电池组性能快速衰减的主要原因。依据电池组的结构建立电池一致性的筛选方法和标准，是目前锂离子电池模组研究中亟待解决的关键技术。本文回顾了近年来国内外锂离子电池一致性筛选方法研究领域的进展，对锂离子电池一致性的内涵进行了剖析，并重点对串联筛选方法进行了评述。

关键词: 锂离子电池, 电池模组, 一致性, 筛选方法, 串联筛选

Abstract:

lithium ion battery has been increasingly applied in the field of mobile and stationary energy storage because of its excellent comprehensive performance. There is always a plurality of battery cells in parallel and/or series in practical application, leading to a faster performance degradation than the single cell. In addition to the uneven operating environment (such as temperature uniformity), the inconsistency of performance among the battery cells in the battery pack is the main reason for the rapid decay of the battery pack performance. To screen single cells with uniform characteristics simply, quickly and effectively is the goal of engineering in practice. In this paper, the consistency screening of lithium ion batteries in recent years are reviewed. The concept and definition of the consistency of lithium ion batteries are explored. The rapid and effective screening by cells in series are evaluated.

Key words: lithium ion batteries, battery pack, consistency, screening, series screening