Walk you through the EL tester

EL(Electroluminescence) Tester is used to evaluate the quality of solar cells by detecting the electron luminescence phenomenon of solar cells.In the EL test, the battery will emit visible light when powered on, and the EL tester will convert these luminous phenomena into images or videos for analysis.Then it is possible to determine whether the solar cell is defective or damaged through the analysis and comparison of EL images or videos.

EL tester can help detect hot spots, cracks, welding defects and other problems of the solar cell, as well as detect the uniformity and power output of the battery.Through EL testing, problem cells can be found and eliminated in time to improve the quality and performance of solar cell modules.

EL tester usually consists of optical microscope, camera, light source, image processing software and so on.During the test, the battery is placed in a dark environment, and is stimulated to glow by applying an electric current,and luminous image or video is recorded.Then the image processing software is used for analysis, and the quality assessment results of the battery are obtained.

EL testers are widely used in the solar industry to help improve the quality and reliability of solar modules. It can be used for quality control on the production line, as well as for research and development and battery cell performance evaluation in the laboratory.