【Advances in Applied Energy】实现更安全的锂离子电池:热失控评述

学术   科学   2025-01-03 18:31   美国  

原文信息:

Towards a safer lithium-ion batteries: A critical review on cause, characteristics, warning and disposal strategy for thermal runaway

原文链接:

https://www.sciencedirect.com/science/article/pii/S2666792423000252

摘要

锂离子电池因其优异的电气性能和对实现碳中和目标的重要贡献,已成为电池储能系统和电动汽车的最佳选择。随着锂离子电池的大规模应用,由其引发的安全事故也日益增多。锂离子电池作为电池储能系统和电动汽车的核心部件,其故障约占车辆故障的 60%,且具有故障蔓延快、逃逸时间短、易引发火灾等特点,因此提升锂离子电池的安全性迫在眉睫。作者从设计、生产、应用等方面分析了锂离子电池失效的原因和机理,研究了其失效特征和热失控预警算法,并根据电池失效机理及其演变过程提出了长-中-短分级预警的概念,为失效预警提供依据。由于锂离子电池起火难以完全避免,作者也探讨了锂离子电池起火的特点,从而改进电池结构,并开发灭火剂和灭火方法,达到预防和扑灭火灾的目的。提高电池的安全性是一项系统工程,在化学体系尚未取得突破性进展的情况下,需要在设计、生产、使用和处置等各个环节进行改进(比如建立实用的分级预警系统),以提高电池的安全性,最大限度地降低失效风险。

更多关于"Lithium-ion Battery"的研究请见:https://www.sciencedirect.com/search?pub=Applied%20Energy&cid=271429&qs=Lithium-ion%20Battery

Abstract

Lithium-ion batteries have become the best choice for battery energy storage systems and electric vehicles due to their excellent electrical performances and important contributions to achieving the carbon-neutral goal. With the large-scale application, safety accidents are increasingly caused by lithium-ion batteries. As the core component for battery energy storage systems and electric vehicles, lithium-ion batteries account for about 60% of vehicular failures and have the characteristics of the rapid spread of failure, short escape time, and easy initiation of fires, so the safety improvement of lithium-ion batteries is urgent. This study analyses the causes and mechanisms of lithium-ion batteries failures from design, production, and application, investigates its failure features and warning algorithms for thermal runaway, and the concept of long-medium-short graded warning is proposed based on the battery failure mechanism and its evolution to provide a basis for failure warning. As lithium-ion batteries fires are difficult to completely avoid, the characteristics of lithium-ion batteries fires are explored to improve battery structure and develop fire extinguishing agents and methods for fire prevention and suppression. Improving the safety of batteries is a systematic project, and at a time when there has been no breakthrough in the chemical system, improvements, such as build a practical graded warning system, are needed in all aspects of design, production, use and disposal to improve battery safety and minimize the risk of failure.

Keywords

Lithium-ion battery

Fault diagnosis

Graded warning

Fire suppression

Graphics


Fig. 1. The flowchart of framework.

Fig. 6. Battery abuse classification.

Fig. 10. Graded warning diagram of thermal runaway of a lithium-ion battery.

Fig. 16. LiB safety improvement path.

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