Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (6): 2293-2302.doi: 10.19799/j.cnki.2095-4239.2021.0145

• Energy Storage System and Engineering • Previous Articles     Next Articles

Intrinsic safety of energy storage in a high-capacity battery

Tianao ZHANG1,2, Hao LIU2, Yongchong CHEN1,2(), Qingsong WANG3, Shuxing ZHANG4, Qiquan ZENG4   

  1. 1.University of Chinese Academy of Sciences, Beijing 100049, China
    2.Institute of Electrical Engineering of the Chinese Academy of Sciences, Beijing 100190, China
    3.University of Science and Technology of China, Hefei 230026, Anhui, China
    4.China Guangdong Nuclear Power Technology Research Institute Co. Ltd. , Shenzhen 518000, Guangdong, China
  • Received:2021-04-07 Revised:2021-05-07 Online:2021-11-05 Published:2021-11-03

Abstract:

With the extensive production of various large electrochemical energy storage projects, the method to ensure the intrinsic safety of high-capacity energy storage batteries has emerged as the most pressing issue in the industry. This paper reviews the evolution of the concept of intrinsic safety and introduces the concept's connotation. To summarize, this study uses the design rules of intrinsically safe batteries in the coal industry as a guideline and proposes a grading scheme for intrinsic safety battery energy storage, which categorizes the safety level of energy storage batteries into three categories: intrinsic safety, extrinsic safety, and unsafe. Given the current state of energy storage batteries in the form of modules and containers, this study divides the intrinsic safety of energy storage batteries into three distinct aspects based on their composition, namely: battery cell, module, and container system, and discusses the intrinsic safety of the three composition forms separately. In addition, the technical route of different directions is introduced in light of the intrinsic safety of the battery core, based on the three technology routes of aqueous battery, solid-state battery, and safener injection, and the study and application progress related to them are discussed and ordered, and the intrinsic safety challenges faced by different routes, as well as the future application prospects of the high-capacity energy storage battery, are put forward.

Key words: battery energy storage, intrinsically safe, traditional securit

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