浅析固态锂离子电池安全性

doi:10.12028/j.issn.2095-4239.2018.0171

储能科学与技术 ›› 2018, Vol. 7 ›› Issue (6): 994-1002.doi: 10.12028/j.issn.2095-4239.2018.0171

浅析固态锂离子电池安全性

张永龙¹, 夏会玲², 林久², 陈少杰², 许晓雄^1,2

1. 浙江锋锂新能源科技有限公司, 浙江宁波 315000;
2. 中国科学院宁波材料技术与工程研究所, 浙江宁波 315201

收稿日期:2018-09-03 修回日期:2018-09-13 出版日期:2018-11-01 发布日期:2018-09-13
通讯作者: 陈少杰,博士,"关键人才"高级工程师,主要研究方向为固态锂电池及其关键材料,E-mail:chenshaojie@nimte.ac.cn;许晓雄,博士,研究员,主要研究方向为固态锂电池关键材料、大容量固态锂电池技术及其产业化,E-mail:xuxiaoxiong@ganfenglithium.com。
作者简介:张永龙(1987-),男,硕士,工程师,主要研究方向为固态锂电池技术及安全性能研究,E-mail:zhangyonglong@ganfenglithium.com

Brief analysis the safety of solid-state lithium ion batteries

ZHANG Yonglong¹, XIA Huiling², LIN Jiu², CHEN Shaojie², XU Xiaoxiong^1,2

1. Zhejiang Funlithium New Energy Technology Co., Ltd., Ningbo 315000, Zhejiang, China;
2. Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China

Received:2018-09-03 Revised:2018-09-13 Online:2018-11-01 Published:2018-09-13
Contact: 10.12028/j.issn.2095-4239.2018.0171

摘要/Abstract

摘要： 锂二次电池因其具有能量密度高、循环寿命长、无记忆效应、无污染等优点，使得其在便携式消费电子产品、电动汽车、能量储存等领域具有广泛的应用前景。目前，锂二次电池的能量密度和安全性是当今世界的研究热点。但对于传统液态电解质的锂离子电池而言，尽管从材料、模组、电源管理、热管理、系统设计等各个层面均采取了多种改进措施，然而高能量密度电芯的安全性问题依然突出，热失控问题难以彻底避免。因此，为了提高锂电池的安全性，发展理论上不易燃的固态锂电池是解决锂电池安全问题的必由途径。本工作比较了传统液态锂离子电池与固态锂电池结构特征，总结了其各自优缺点，进一步深入剖析了传统液态锂离子电池安全问题产生的根本原因，提出了解决锂离子电池安全性问题的最佳方案，并通过对自主研发的系列容量固态锂（离子）电池的安全性能进行测试，证实了固态锂电池的高安全特性。

关键词: 固态锂电池, 结构特征, 高能量密度, 原因剖析, 安全性

Abstract: Lithium secondary batteries has a wide application prospect in portable consumer electronic products, electric vehicles and energy storage etc. owing to its advantages of high energy density, long cycle life, no memory effect and environmentally friend. At present, the energy density and safety of lithium secondary batteries are the hot spot in the world. However, for conventional lithium-ion batteries with liquid electrolytes, although various improvement measures have been taken from the aspects of materials, modules, power management, thermal management and system design, the safety issues in high-energy density cells are still prominent, and it is difficult to avoid the problem of thermal runaway completely. Therefore, in order to improve the safety of lithium ion battery, the development of non-flammable solid-state lithium battery is a necessary way to solve the safety problem of conventional lithium ion battery. This paper compares cell structures between the traditional liquid lithium ion battery and solid-state lithium battery, and their respective advantages and disadvantages are summarized. The fundamental causes of safety problems in traditional liquid lithium ion batteries are analyzed, and the approach of replacing the liquid electrolyte with solid-electrolyte is put forward as the best solution to solve the problem of safety issues in lithium ion batteries. Finally, the high safety characteristics of solid-state lithium-ion batteries are confirmed depending on the safety test results of some kind of solid-state lithium batteries which are developed independently.

Key words: solid-state lithium battery, cell structure, high energy density, reason-analysis, safety

中图分类号:

TQ028.8

张永龙, 夏会玲, 林久, 陈少杰, 许晓雄. 浅析固态锂离子电池安全性[J]. 储能科学与技术, 2018, 7(6): 994-1002.

ZHANG Yonglong, XIA Huiling, LIN Jiu, CHEN Shaojie, XU Xiaoxiong. Brief analysis the safety of solid-state lithium ion batteries[J]. Energy Storage Science and Technology, 2018, 7(6): 994-1002.

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浅析固态锂离子电池安全性

Brief analysis the safety of solid-state lithium ion batteries

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