计算机断层扫描技术在锂离子电池检测中的应用研究  

Application of Computed Tomography in Lithium-ion Battery Detection

作　　者：马天翼 苏素 张宗 马德良 刘仕强[1] 韦振 徐大鹏 MA Tianyi;SU Su;ZHANG Zong;MA Deliang;LIU Shiqiang;WEI Zhen;XU Dapeng(Tianjin Key Laboratory of Evaluation Technology for Electric Vehicles,China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300,China;Tianjin Sanying Precision Instruments Co.,Ltd.,Tianjin 300300,China)

机构地区：[1]中国汽车技术研究中心有限公司,天津市电动汽车评价技术企业重点实验室,天津300300 [2]天津三英精密仪器股份有限公司,天津300300

出　　处：《重庆理工大学学报（自然科学）》2020年第2期133-139,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家重点研发计划资助项目(2018YFC1902200);天津市科技计划资助项目(18YFZCGX00240);中国汽车技术研究中心有限公司重点课题项目(18200116)

摘　　要：电动交通技术的不断发展对电动汽车的续航里程提出了更高的要求,同时也促进了动力电池检测技术的发展。随着动力电池全生命周期和闭环产业链概念的提出,如何对动力电池在非破坏性的前提下进行内部结构的检测是动力电池测评领域需要重点关注的问题。为此,以不同型号的锂离子动力电池单体为研究对象,对于微米级计算机断层扫描这种无损检测技术在锂离子电池内部结构分析中的应用方法进行了研究。研究结果阐明了锂离子电池的性能衰减和内部结构安全隐患在计算机断层扫描检测中的具体表现形式,为锂离子电池技术发展中的无损检测需求提出了解决方案。The continuous development of electric transportation technologies put forward higher requirements for the endurance of electric vehicles,and also promotes the development of traction battery detection technologies. With the concept of traction battery whole life cycle and closed-loop industry chain proposed,how to detect the internal structure of traction battery under non-destructive premise is one of the key issues in the field of traction battery test and evaluation. In this paper,different types of lithium-ion power batteries are adopted to systematically study the application of micron-scale computed tomography( CT) in the analysis of internal structure of lithium-ion batteries.The results clarify the manifestations of performance degradation and internal structural safety hazards of lithium-ion batteries in computed tomography testing,and provide effective solutions for the nondestructive testing requirements in the development of lithium-ion batteries technology.

关 键 词：锂离子电池 动力电池 无损检测 计算机断层扫描 

分 类 号：TM912[电气工程—电力电子与电力传动]