Energy Storage Science and Technology ›› 2023, Vol. 12 ›› Issue (7): 2282-2301.doi: 10.19799/j.cnki.2095-4239.2023.0252

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Research progress on the safety assessment of lithium-ion battery energy storage

Jin LI1,7,10(), Qingsong WANG2(), Depeng KONG3(), Xiaodong WANG4(), Zhenhua YU5, Yanfei LE6, Xinyan HUANG8, Zhenkai HU9, Houfu WU11, Huabin FANG12, Caowei13, Shaoyu ZHANG1,7,10, Ping ZHUO1,7,10(), Ye CHEN1,7,10, Ziting LI1,7,10, Wenxin MEI2, Yue ZHANG3, Lixiang ZHAO4, Liang TANG5, Zonghou HUANG2, Chi CHEN6, Yanhu LIU8, Yuxi CHU1,7,10, Xiaoyuan XU1,7,10, Jin ZHANG1,7,10, Yikai LI9, Rong FENG11, Biao YANG12, Bo HU13, Xiaoying YANG1,7,10   

  1. 1.Tianjin Fire Research Institute of Emergency Management Department, Tianjin 300381, China
    2.State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui, China
    3.China University of Petroleum(East China), Qingdao 266555, Shandong, China
    4.China Electronics Standardizations Institute, Beijing 100171, China
    5.China Energy Storage Alliance, Beijing 102629, China
    6.UL -CCIC Company Limited, Suzhou 215000, Jiangsu, China
    7.Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China
    8.Research Centre for Fire Safety Engineering, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong, China
    9.Power Storage Research Institute, Guangzhou 510630, Guangdong, China
    10.Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China
    11.Guangzhou Great Power Energy & Technology Company Limited, Guangzhou 511400, Guangdong, China
    12.Beijing Weilan New Energy Technology Company Limited, Beijing 102600, China
    13.Sungrow Energy Storage Technology Company Limited, Hefei 230601, Anhui, China
  • Received:2023-04-25 Revised:2023-06-05 Online:2023-07-05 Published:2023-07-25
  • Contact: Jin LI E-mail:lijin@tfri.com.cn;pinew@ustc.edu.cn;kongdepeng@upc.edu.cn;wangxd@cesi.cn;zhuoping@tfri.com.cn

Abstract:

In this study, research progress on safety assessment technologies of lithium-ion battery energy storage is reviewed. The status of standards related to the safety assessment of lithium-ion battery energy storage is elucidated, and research progress on safety assessment theories of lithium-ion battery energy storage is summarized in terms of battery intrinsic safety, energy storage failure and accident statistics, thermal runaway mechanism, and fire spread mechanism. Numerical simulations and safety assessment technologies from lithium-ion battery cells to energy storage systems are analyzed, and the current situation of the safety assessment technology of energy storage power stations is introduced. The results indicate that, with the continuous iteration of battery technology and the continuous upgrading of energy storage system structures, the safety assessment of energy storage becomes more and more complex; thus, existing assessment techniques and standards must be further improved. In the future, safety assessment indexes must be adjusted and updated according to the development of energy storage battery intrinsic safety and electrical and fire safety technologies. By combining the progress of simulation and experimental means, safety index thresholds are clarified, as well as the evolution of safety performance accompanying capacity decay and aging after the energy storage system is put into operation. This study aims to build a safety performance level assessment system covering multiple systems, scenarios, and elements; integrate dynamic and static indicators; and develop a safety performance rating assessment technology for energy storage systems that covers "cell-module-unit-system-power plant" layers. Finally, we aim to develop an internationally applicable safety performance assessment standard for energy storage systems and provide Chinese solutions for global energy storage safety.

Key words: lithium-ion batteries, energy storage, safety assessment technology, energy storage safety standards

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