公开(公告)号：US20230208355A1

公开(公告)日：2023-06-29

申请号：US18179031

申请日：2023-03-06

申请人： Hunan University

发明人： Yunze HE ,  Ruizhen YANG ,  Hongjin WANG ,  Zihao SUI ,  Pan WANG ,  Xiaofei ZHANG

IPC分类号： H02S50/15 ,  G01J5/48

CPC分类号： H02S50/15 ,  G01J5/485 ,  G01J2005/0077

摘要： A non-destructive testing system for photovoltaic cells includes a non-contact electromagnetic induction device, a short-wave infrared (SWIR) camera or/and a visible-light camera, a thermal imaging device, and an image processing device. The non-contact electromagnetic induction device is configured for generating an external electric field acting on the photovoltaic cell without being in contact with the photovoltaic cell. A direction of the external electric field is parallel to that of an internal electric field of the photovoltaic cell. The SWIR camera or/and the visible-light camera is/are configured for obtaining an optical radiation distribution map within the photovoltaic cell. The thermal imaging device is configured for obtaining a thermal radiation distribution map in the photovoltaic cell. The image processing device is configured for storing and processing the optical and thermal radiation distribution maps. Non-destructive testing equipment including the above system is further provided.