270w Polycrystalline Solar Panel China Supplier

2021-09-02 17:10:14

270w Polycrystalline Solar Panel China Supplier battery module:1) Tempered glass. Its function is to protect the main body of power generation (cells), and the selection of light transmission is required. 1. The light transmission rate must be high (generally more than 91%); 2. Ultra-white tempered treatment

2) EVA. Used to bond and fix the tempered 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 prone to ageing and yellowing, which affects the light transmittance of the module, thereby affecting the module In addition to the quality of the EVA itself, the lamination process of the module manufacturer also has a great impact on the quality of power generation. life.

3) Cells. The main function is to generate electricity. The mainstream in the main power generation market is crystalline silicon solar cells and thin-film solar cells. Both have their own advantages and disadvantages. The cost of equipment is relatively low, but the consumption and cell costs are high. However, the photoelectric conversion efficiency is also high. It is more suitable for thin-film solar cells to generate electricity under outdoor sunlight. The relative equipment cost is higher, but the consumption and battery costs are very low. However, the photoelectric conversion efficiency is more than half that of crystalline silicon cells, but the low light effect is very Well, it can also generate electricity under ordinary light, such as the solar cell on a calculator.

4) Backplane. Function, sealing, insulation, waterproofing (usually TPT, TPE and other materials must be resistant to aging, component manufacturers have a 25-year warranty, tempered glass, aluminum alloy is generally no problem, the key is whether the backplane and silica gel can meet the requirements. )

5) Silica gel. Sealing function, used to seal the junction between the component and the aluminum alloy frame, and the component and the junction box. Some companies use double-sided tape and foam instead of silica gel. Silicone is commonly used in China. The process is simple, convenient, easy to operate, and low cost.

6) Junction box. Protect the entire power generation system and play a role as a current transfer station. If the short-circuit junction box of 270w Polycrystalline Solar Panel china supplier automatically disconnects the short-circuit battery string to prevent burn-out of the entire system junction box, the most important thing is the selection of diodes. According to the battery in the module The type of the chip is different, the corresponding diode is also different.