A reliable application of connecting components such as e.g. flux, soldering paste or conductive adhesive is the alpha and omega of the solar cell production, because the application of flux on the busbar of solar cells is important for an ideal contact and the quality of the join. Improper application of flux can create various consecutive faults. A good solder connection has an even application of flux.
EVT has developed a program which checks the application of flux. First, the system checks the presence of flux on the conduction bands. This means that during the assembly of solar cells, the software checks if flux has been applied or not. Second, the application of the flux directly before the soldering is controlled, which is especially important with mixed PCB assemblies. The EyeVision software program controls that only those surfaces to be soldered are wetted with flux. The control of flux is a material- and time-saving solution.
The EyeVision inspection system not only optimizes the connection of solar cells, it also supports the development of quality inspection. The EyeVision software is also quite easy to handle. The programming is done in the graphical user interface with the drag-and-drop function. This also means that for creating an inspection program no special programming skills are required. The commands are ready-made and the user has only to drag an icon from the Toolbox into the program editor.