GB/Z 46984.2-2026 Active

This document specifies a method for detecting battery defects using the electroluminescence (EL) images of crystalline silicon (c-Si) photovoltaic cells under forward bias. This document provides guidance for capturing the electroluminescence images of unencapsulated c-Si photovoltaic cells and clarifies the various defects that can be detected by EL images, as well as the different methods for detecting and distinguishing these defects. When a single EL image cannot provide conclusive information about a certain type of defect, it is recommended to combine it with other methods. Some batteries have unique EL characteristics, and using these batteries to fabricate components may pose potential risks. This document provides relevant information for this purpose.
This document is applicable to the field of crystalline silicon photovoltaic cells, as well as to other types of wafer-based photovoltaic cells.