Effect of preload forces on multidimensional signal dynamic behaviours for battery early safety warning

作     者：Kuijie Li Jiahua Li Xinlei Gao Yao Lu Depeng Wang Weixin Zhang Weixiong Wu Xuebing Han Yuan-cheng Cao Languang Lu Jinyu Wen Shijie Cheng Minggao Ouyang Kuijie Li;Jiahua Li;Xinlei Gao;Yao Lu;Depeng Wang;Weixin Zhang;Weixiong Wu;Xuebing Han;Yuan-cheng Cao;Languang Lu;Jinyu Wen;Shijie Cheng;Minggao Ouyang

作者机构：School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Automotive Safety and EnergyTsinghua UniversityBeijing 100084China Energy and Electricity Research CenterJinan UniversityZhuhai 519070GuangdongChina Department of Mechanical EngineeringImperial College LondonLondon.SW7:2AZ.UK 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第92卷第5期

页      面：484-498页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Key R&D Program of China(2022YFB2404300) the National Natural Science Foundation of China(NSFC Nos.52177217 and 52106244) 

主　　题：Lithium-ion battery Thermal runaway Preload force Expansionforce Early warning Multidimensional signal 

摘      要：Providing early safety warning for batteries in real-world applications is *** this study,comprehensive thermal abuse experiments are conducted to clarify the multidimensional signal evolution of battery failure under various preload *** time-sequence relationship among expansion force,voltage,and temperature during thermal abuse under five categorised stages is *** characteristic peaks are identified for the expansion force,which correspond to venting,internal short-circuiting,and thermal *** particular,an abnormal expansion force signal can be detected at temperatures as low as 42.4°C,followed by battery thermal runaway in approximately 6.5 ***,reducing the preload force can improve the effectiveness of the early-warning method via the expansion ***,reducing the preload force from 6000 to 1000 N prolongs the warning time(i.e.,227 to 398 s)before thermal runaway is *** on the results,a notable expansion force early-warning method is proposed that can successfully enable early safety warning approximately 375 s ahead of battery thermal runaway and effectively prevent failure propagation with module *** study provides a practical reference for the development of timely and accurate early-warning strategies as well as guidance for the design of safer battery systems.