叠片式锂离子电池在线快速CT检测技术  

On-line rapid CT detection technology for laminated Li-ion battery

作　　者：葛春平[1] 李育林 薛渭萍 刘康 黄美华[4] GE Chunping;LI Yulin;XUE Weiping;LIU Kang;HUANG Meihua(School of Physics and Electrical Engineering,Weinan Normal University,Weinan,Shaanxi 714000,China;Shenzhen Unicomp Technology Co.,Ltd.,Shenzhen,Guangdong 518132,China;CT Room of Weinan Central Hospital,Weinan,Shaanxi 714000,China;College of Chemistry,Xiangtan University,Xiangtan,Hunan 411105,China)

机构地区：[1]渭南师范学院物理与电气工程学院,陕西渭南714000 [2]深圳日联科技有限公司,广东深圳518132 [3]渭南市中心医院CT室,陕西渭南714000 [4]湘潭大学化学学院,湖南湘潭411105

出　　处：《电池》2024年第3期390-394,共5页Battery Bimonthly

摘　　要：锂离子电池行业对电池质量检测方法的需求日益增长。针对叠片式电池X射线检测方式存在的图像遮挡和不能直接测量x、y方向包覆量的问题,提出一种快速计算机断层扫描(CT)定向重建技术。通过2维(2D)定位切片位置,重建3维(3D)体素数据的两张x、y方向切片图像,再进行正负极顶点定位,实现对包覆量的直接精确计算。使用所提方法的快速CT检测设备与传统2D检测设备相比,误判率可降低2~3个百分点。The demand for battery quality inspection methods in Li-ion battery industry is growing.A rapid computed tomography(CT)directional reconstruction technology is proposed to solve the problems of image occlusion and the inability to directly measure the coating amount in the x and y directions in the X-ray detection method of laminated battery.By positioning the slice position in two-dimensional(2D)and simultaneously reconstructing two slice images in the x and y directions of the three-dimensional(3D)voxel data,the cathode and anode vertices are positioned to achieve direct and accurate calculation of the coating amount.The misjudgment rate of the rapid CT detection equipment using the proposed method can be reduced by 2-3 percentage points compared with the traditional 2D detection equipment.

关 键 词：锂离子电池 快速计算机断层扫描(CT) 叠片式电池 包覆量 

分 类 号：TM912.9[电气工程—电力电子与电力传动]