Back series welding
Connect several battery pieces together to form a component string, and the positioning mainly depends on a membrane plate. Workers will use electric soldering iron and solder wire to weld the front electrode (negative electrode) of the single-piece welded
EL and apperance inspection
EL=Electroluminescent, which is electroluminescence, is used to detect internal defects of cells (silicon chips) and components. The EL inspection after lamination and before lamination is to inspect all semi-finished solar panels. If any problems are foun