分离器(采油)
离子
锂(药物)
机制(生物学)
失效机理
汽车工程
核工程
瞬态(计算机编程)
材料科学
工程类
计算机科学
结构工程
化学
热力学
物理
内分泌学
有机化学
操作系统
医学
量子力学
作者
Dakuan Yu,Dongsheng Ren,Keren Dai,Z. Y. He,Jinming Zhang,Benqiang Yang,Shaojie Ma,Xiaofeng Wang,Zheng You
标识
DOI:10.1016/j.est.2021.103191
摘要
With the advantage of high energy density, lithium batteries are widely used in industrial and military applications. However, under the complex conditions of vehicle collision and high-speed flight ammunition, lithium-ion batteries have functional failure, which seriously affects the safety and stability of systems using batteries. In this paper, research on the electric parameter drift of lithium-ion batteries under high impact is carried out through a machete test system, and the experimental phenomena are analyzed theoretically. Based on this, an equivalent circuit model is established to analyze the failure phenomenon and mechanism of lithium-ion batteries under more extreme impact scenarios, which are difficult to test in the laboratory. Finally, the mechanical impact dynamic (MID) model of lithium-ion batteries at the moment of high impact is established, and the influence of separator thickness, elastic modulus and other parameters on the impact resistance of lithium-ion batteries is revealed, which provides a reference for the optimization design of lithium-ion batteries under a high-impact environment.
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