Non-destructive testing system and device for photovoltaic cells

A non-destructive testing system for photovoltaic cells, comprising:

• 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;
• wherein the non-contact electromagnetic induction device is configured to generate an external electric field acting on a to-be-tested photovoltaic cell without being in contact with the to-be-tested photovoltaic cell;
• and a direction of the external electric field is parallel to a direction of an internal electric field of the to-be-tested photovoltaic cell;
• the SWIR camera or/and the visible light camera is/are configured to obtain an optical radiation distribution map within the to-be-tested photovoltaic cell;
• the thermal imaging device is configured to obtain a thermal radiation distribution map within the to-be-tested photovoltaic cell;
• the image processing device is configured to store and process the optical radiation distribution map and the thermal radiation distribution map;
• the non-destructive testing system further comprising:
• a movable guide rail;
• wherein the non-contact electromagnetic induction device, the SWIR camera or/and the visible-light camera, and the thermal imaging device are mounted on the movable guide rail;
• and relative positions between the non-contact electromagnetic induction device, the SWIR camera or/and the visible-light camera, and the thermal imaging device remain unchanged during movement of the movable guide rail.