The process flow of a Automatic placing mould device is as follows: In order to effectively combine photovoltaic modules with consistent or similar performance, they should be classified according to their performance parameters; the test is to classify the output parameters of the test battery by the size of the test. In order to improve the utilization rate of the battery, a qualified PV module can be made.
This is followed by soldering the busbar to the main grid on the front side of the cell. The busbar is a tinned copper strip. The soldering machine we use can spot the solder strip on the main grid in multiple points; the backside soldering is 36 cells are connected in series to form a component string.
After the back side is connected in series and passed the inspection, the component string, glass and cut EVA, glass fiber and back sheet are laid at a certain level and ready for lamination. The glass is coated with a layer of reagent to increase the bond strength between the glass and the EVA. When laying, ensure the relative position of the battery string and glass and other materials, adjust the distance between the batteries, and lay a good foundation for lamination.
The laid battery is placed in a laminator, the air in the assembly is evacuated by vacuuming, and then heated to fuse the EVA to bond the battery, the glass and the back sheet together; finally, the assembly is cooled and taken out. The lamination process is a key step in the production of components, and the lamination temperature lamination time is determined by the nature of the EVA. During lamination, the EVA melts and solidifies outward due to pressure to form a burr, so it should be cut off after lamination.
Solder a box at the back of the assembly to facilitate connection between the battery and other equipment or batteries. High-voltage test refers to applying a certain voltage between the component frame and the electrode lead to test the pressure resistance and dielectric strength of the component to ensure that the component is not damaged under harsh natural conditions (lightning strikes, etc.). The purpose of the test is to calibrate the output power of the battery, test its output characteristics, and determine the quality level of the component.