Photovoltaic module processing is an important part of the solar photovoltaic industry chain, by packaging a thin piece of solar cells, so that it can operate reliably in harsh outdoor environments.
At present, the packaging form of the mainstream photovoltaic module processing technology is EVA film packaging, which is composed of multiple processes such as battery detection, battery single welding, battery serial welding, component stacking, component lamination, installation of the frame and installation of the junction box, finished product testing and packaging storage. Each process is interlinked, so the level of each process directly affects the quality and grade of the product.
The first step
The first step is battery inspection. As the main raw material of photovoltaic module processing - the performance of the battery directly determines the quality of the photovoltaic module, therefore, in addition to its appearance, color difference and resistivity detection, but also to test the battery in the specific light, temperature conditions of the output current, output voltage and stability and durability and other parameters, its test is mainly completed by professional instruments and equipment.
The second step
The second step is single-piece welding of the battery. The welding should be firm, no burr, no virtual welding and tin slag, and the surface is smooth and beautiful.
The third step
The third step is serial welding of the battery. During welding, the solder bar is required to be welded flat, with a straight appearance, no raised solder bumps, and no virtual welding phenomenon.
The fourth step
The fourth step is stacking. After lamination, the EL test was carried out to confirm that there were no hidden cracks, virtual welding, welding off, black film and other defects.
The fifth step
The fifth step is lamination. The application of photovoltaic module laminating machine to laminate the laminated material requires that the chip in the module has no foreign matter, debris, cracks, etc.
The sixth step
The sixth step is framing. Evenly fill the aluminum alloy frame groove with silicone, insert the component into the aluminum alloy groove, and start the framing machine to complete the framing.
The seven step
The seventh step is cleaning. Tear off the plastic film on the surface of the aluminum profile, and clean various pollutants on the surface of the component with wine semen to ensure that the appearance of the component is clean and pollution-free.
The eighth step
The eighth step is the testing of finished components. Test according to the operating procedures of the solar module tester, first calibrate the solar module tester with standard components in the same environment, and make calibration records.
