【摘要】 近年来,随着电动汽车行业的大力发展,锂离子电池作为电动交通工具储存和转化电能的重要载体大量涌入市场,但在使用过程中存在过充放电、局部过热以及外部挤压碰撞等滥用情况,可能会导致其性能下降,甚至引发热失控等安全问题。为此,对当前中外锂离子电池热失控的研究进展进行了综述总结,并通过VOSviewer可视化软件对发文量、期刊分布和关键词等进行分析。结果表明:当前锂离子电池的热失控是限制其发展的关键因素,目前主要从电池正极材料改性、电解液中添加阻燃剂、电池热管理设计三方面来提升锂离子电池的安全性。更多还原

【Abstract】 In recent years, with the vigorous development of the electric vehicle industry, lithium-ion batteries, as an important carrier for electric vehicles to store and transform electric energy, are flooding the market. However, there are abuses such as overcharge and discharge, local overheating, and external squeeze collision during use, which may cause its performance to decline, and even cause safety issues such as thermal runaway. The current research progress of thermal runaway of lithium-ion batteries was summarized at home and abroad, and analyzed the number of articles, journal distribution and keywords through the VOSviewer visualization software. The results show that the current thermal runaway of lithium-ion batteries is a key factor limiting its development. At present, the safety of lithium-ion batteries is mainly improved from three aspects: modification of battery cathode materials, addition of flame retardants to electrolyte, and battery thermal management design.更多还原