To put it simply, the main purpose of a solar panel is to use interconnection strips to connect the cells in series based on positive and negative poles, arrange them, arrange them, package them in a laminator , then install them. aluminum alloy frame and junction box, and measure power, packing boxes. The production process doesn't seem complicated, just lots of details.
Additionally, depending on whether you are building an automatic line or a manual line, there are slight differences in equipment.
Material preparation: interconnect strip dryer, EVA/backplate cutting machine (backplate can be cut manually), battery sheet sorting (can be done manually) or removed directly;
Welding: Soldering station (manual wire), automatic string welding machine;
Lamination: workbench, voltmeter, EL test equipment (necessaryif you want to make a good product, otherwise remove it);
Lamination: laminator;
Framing: framing machine;
Cure: atomizer;< /p>
Final test: power test equipment, ground withstand voltage test equipment;
There are other complicated things, please find someone, that's all. You can check professional websites for the material, I believe there are many.
EVA is a hot melt adhesive with a thickness between 0.4mm and 0. .6mm. It has a flat surface and uniform thickness. , and contains a crosslinking agent. It is non-sticky and non-sticky at room temperature. After some adjustment and hot pressing, fusion bonding and cross-linking will occur and it will become completely transparent.
Solar laminates or solar panels are made of monocrystalline silicon cells or polycrystalline silicon cells, de ultra-white tempered glass, TPT and EVA, which are therefore laminated together at high temperature by solar panel laminator. the name solar laminate.
Detailed information:
1. Production process
Chapter One-step single-chip soldering: Solder the battery slices to the interconnect strips (tin-plated copper strips) to prepare for series connection of the battery slices.
The second step is series welding: connecting a certain number of cells in series.
The third step of lamination: continue the circuit connection of battery strings, and at the same time protect the battery sheets with glass, EVA film and TPT back sheet.
The fourth step is lamination: glue and fuse the battery sheet, glass, EVA film and TPT backsheet under certain conditions of temperature, pressure and vacuum.
Step 5: Enframing: Use an aluminum frame to protect the glass and make installation easier.
The sixth step of cleaning: ensuring the appearance of the components.
Step 7 Electrical Performance Test: Test the insulation performance and power output of the components.
Finally packed and stored.
2. Power generation principle
The working principle of n/p-type crystalline silicon solar cells: when p-type semiconductor and n-type semiconductor are closely combined and connected together. , at the intersection of the two, a p-n junction forms at the interface. When the photovoltaic cell is illuminated by sunlight, positive and negative charges accumulate on both sides of the p-n junction, resulting in a photovoltaic is generated and a built-in electric field is formed. This is the “photovoltaic effect”.
Theoretically, at this point, if the electrodes are removedreated on both sides of the built-in electric field and connected to an appropriate load, a current will form and power will be obtained on the load. Solar cell modules are solid-state devices that use the electronic properties of semiconductor materials to achieve photovoltaic conversion.
Baidu Encyclopedia - Solar Panel Components
Baidu Encyclopedia - Solar Laminates