First of all, you need to understand what a solar panel is. Solar panels are made of several solar cells welded together.
Generally speaking, solar panels are also called solar modules or photovoltaic modules.
Manufacturing requires: crystalline silicon cells, glass, aluminum alloy, EVA, junction boxes, welding tape.
The equipment required is: sorting equipment (for cell power classification), rope welding; equipment (welding multiple battery sheets), laminating equipment (pressing glass, EVA and battery sheets to form a whole battery panel), framing equipment (installation of aluminum alloy frames) , testing equipment (component tester, EL tester);
< p> Process flow: sorting → string welding (forward and reverse welding) → EL detection → compositionand laying → lamination → frame installation → junction box installation → finished components testing → EL components testing → cleaning → packing → storage.What to do if the edges of solar cells are smudged
1. Look at the color: Generally speaking, the appearance color of monocrystalline silicon and polycrystalline silicon cells is blue. And it is relatively uniform light blue or sky blue. If the color of the battery panel is dark and different, it may not be meticulous in manufacturing.
2. Look at the surface: The tempered glass surface of the battery panel should be smooth and free of foreign objects. In order to increase production speed, some small manufacturers do not clean the silica gel flowing on the surface of tempered glass. If the silica gel is not cleaned, it will affect the efficiency of power generation.
3. Check the silicone: check ifthe silicone is evenly distributed around the back and has penetrated well into the space between the back panel and the frame. Observe carefully whether there are any leaks in the welding of the battery cell strings. Also check if the battery cells are arranged in an orderly manner.
4. Look at the junction box: Finally, check whether the junction box is firm and whether the junction box cover can be firmly and firmly attached to the junction box; whether the anti-theft wire can rotate freely; and if it can be tightened.
5. Look at the price: The safest way is to compare prices. Domestic battery panel prices fluctuate. Although they are not absolute, there is a general range. If the price quoted by the manufacturer is much lower than the market price, then you need to make a careful distinction.
How to distinguish the positive and negative poles of solar cells, howconnect them correctly in series and what are the positive and negative poles of the modules?
Clean the solar cells and frames, and check the frame material.
1. Clean the solar cells and frames: Use a clean dry cloth to wipe the solar cells and frames to ensure that there is no dust, dirt or other impurities on the surface of the frame to to reduce the shadow effect.
2. Check the frame material: If the frame of the solar cell is made of reflective metal material, it will produce a shadow effect on the solar cell. Consider replacing the frame material with a non-reflective frame. , or repair the frame. Matte finish to reduce reflections.
The negative electrode of the solar cell is blue because it is covered with an anti-reflective film on one side. As for the series connection, of course the positive pole of battery 1 is connected to thenegative pole of battery 2, the positive pole of battery 2 is connected to the negative pole of battery 3, and they are connected hand in hand. rememberJust make sure that the light receiving surface is the negative electrode, so the glass surface is the negative electrode and the back plate surface is the positive electrode.