1. Tempered glass: Its function is to protect the main body of power generation (such as cell), and the light transmission and selection are required: (1) The light transmittance must be high (generally above 91%); (2) Ultra-white tempering treatment.
2. EVA: Used to bond and fix the toughened glass and the main body of power generation (cell). The quality of the transparent EVA material directly affects the life of the module. The EVA exposed to the air is easy to age and yellow, thus affecting the light transmittance of the module. In addition to the quality of the EVA itself, the lamination process of the module manufacturer is also very important. For example, the EVA glue connection is not up to the standard, and the bonding strength of the EVA and the tempered glass and the backplane is not enough, which will cause the EVA to be early. Aging affects the life of components.
3. Cells: The main function is to generate electricity. The mainstream in the power generation market is crystalline silicon solar cells and thin-film solar cells. Both have their own advantages and disadvantages.
(1) Crystalline silicon solar cells have relatively low equipment costs, but their consumption and cell costs are high, but they have high photoelectric conversion efficiency and are more suitable for power generation under outdoor sunlight.
(2) Thin-film solar cells have relatively high equipment costs, but low consumption and battery costs, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low-light effect is very good, and it can generate electricity under ordinary lights, such as calculators On the solar cell.
4. Backplane: The function is sealed, insulated and waterproof. Generally, TPT, TPE and other materials must be resistant to aging. Most component manufacturers have a 25-year warranty. Tempered glass and aluminum alloy are generally okay. The key is whether the backplane and silica gel can meet the requirements.
5. Aluminum alloy: Protect the laminate, play a certain sealing and supporting role.
6. Junction box: It protects the entire power generation system and acts as a current transfer station. If the component is short-circuited, the junction box will automatically disconnect the short-circuit battery string to prevent burnout of the entire system. The most important thing in the junction box is the selection of diodes. According to the battery in the component The type of the chip is different, the corresponding diode is also different.
7. Silicone: Sealing function, used to seal the junction between the component and the aluminum alloy frame, the component and the junction box, the process is simple, convenient, easy to operate, and the cost is very low.
