Experimental Study on Arcing in Thermal Propagation of Lithium-Ion Battery Systems

作     者：Li, Zhaoyang Liu, Dinghong Li, Haibin Dong, Wenkai Zhang, Hongzhu Tian, Yongjun Liu, Lei 

作者机构：Co. Ltd. Changzhou213000 China China Automotive Technology and Research Center Co. Ltd. Tianjin300300 China Jiangsu Province Engineering Technology Research Center of Optical Storage Charging and Testing Integrated R&D and Application Changzhou213000 China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Lithium ion batteries 

摘      要：With the widespread integration of lithium-ion batteries in electric vehicles and energy storage systems, ensuring their safety remains a top priority. Researchers have diligently studied the thermal runaway and propagation mechanisms of these batteries to enhance their safety features. Despite significant progress in addressing thermal runaway and propagation, the sporadic occurrence of high-voltage arc phenomena remains a persistent concern, contributing to thermal propagation and potential fires within lithium-ion battery systems. To tackle this challenge, this study introduces a dedicated experimental setup employing a 280Ah lithium iron phosphate (LFP) battery as the samples to be studied. By replicating typical arcing processes at an experimental level, the investigation uncovers crucial insights. Specifically, it reveals that at about 316V, distances less than 4mm between positive and negative terminals can induce breakdown, resulting in arcing and severe combustion triggered by the gas and smoke released during thermal runaway from a single cell. Furthermore, the study proposes an experimental methodology to delve into arcing phenomena and effectively reconstructs the ignition process caused by arcing. Additionally, it suggests exploring the arcing boundary and researching methods for arcing suppression as vital avenues for further exploration. © 2024, The Authors. All rights reserved.