锂离子电池膨胀特性检测方法研究进展  

Research progress on measuring methods for expansion of lithium-ion batteries

作　　者：秦亚莉 杨续来 Qin Yai;Yang Xuai(LIB Technology Center of Anhui Province,Hefei University,Hefei 230601,China;Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401120,China;NETC Innovation Center,Hefei 230031,China)

机构地区：[1]合肥大学安徽省锂离子动力与储能电池产业共性技术研究中心,合肥230601 [2]北京理工大学重庆创新中心,重庆401120 [3]国科能源技术创新中心,合肥230031

出　　处：《仪器仪表学报》2023年第12期22-33,共12页Chinese Journal of Scientific Instrument

基　　金：安徽省科技重大专项(2021e03020001,202203a05020017);安徽高校协同创新项目(GXXT-2021-025)资助。

摘　　要：锂离子电池凭借其高能量密度和长循环寿命等优势被广泛应用于便携式电子设备、电动汽车、储能系统等领域。然而在锂离子电池的反复充放电使用过程中,会出现可逆的嵌锂膨胀和过充过放等原因导致的不可逆的膨胀,且后者是影响锂离子电池循环寿命等性能的重要因素。因此,研究锂离子电池的膨胀特性,有助于进一步了解电池老化机理,进而指导电池系统的安全设计,在新能源汽车及储能领域有巨大的应用价值。本文基于此,结合应用场景总结了外置传感器、内置传感器以及数字成像技术等检测方法应用于锂离子电池膨胀特性研究的现状与进展,同时讨论分析了各类方法的主要优缺点,并展望了锂离子电池膨胀特性检测技术的发展趋势和未来前景。Lithium-ion batteries are widely used in portable electronic devices,electric vehicles,energy storage systems,and other fields owing to their advantages of high energy density and long cycle life.However,in the process of repeatedly charging and discharging the lithium-ion battery,irreversible expansion due to reversible lithium insertion expansion,over-charge,or over-discharge might occur.The irreversible expansion is an important factor affecting the cycle life of lithium-ion batteries.Therefore,the study of the expansion characteristics of lithium-ion batteries is helpful to further understanding the aging mechanism of batteries.Then,the safety design of the battery system is given,which has great application value in the field of new energy vehicles and energy storage.Based on this,this article summarizes the present situation and progress of the research on the expansion characteristics of lithium-ion batteries using external sensors,internal sensors,and digital imaging technology.Meanwhile,the main technical characteristics of the various methods are discussed and analyzed.The development trend and future prospects of the measurement technology for the expansion characteristics of lithium-ion batteries are prospected.

关 键 词：锂离子电池 膨胀特性 检测方法 传感器 数字成像技术 

分 类 号：TM912[电气工程—电力电子与电力传动] TH82[机械工程—仪器科学与技术]