The tax classification code of the solar cell backsheet is 109041306.
The solar panel is a device that absorbs sunlight and converts the energy of solar radiation directly or indirectly into electrical energy by photoelectric effect or photochemical effect. The main material of most solar panels is "silicon", but due to the photoelectric effect. high production cost, its widespread use still has certain limitations.
Compared with ordinary batteries and recyclable rechargeable batteries, solar cells are more energy-saving and environmentally friendly green products.
1) Tempered glass
Its role is to protect the main body of energy production (such as cells). There are requirements for its light transmission selection. must be high (usually 91% or more); 2. Ultra-hardened treatmentwhite
2) EVA
is used to bond and fix the tempered glass and the main body of power generation. (such as battery cells). The advantages and disadvantages of transparent EVA materials directly affect the service life of the component, EVA exposed to air is prone to aging and yellowing, thereby affecting the light transmission of the component and thereby affecting the production of energy. quality of the component. In addition to the quality of the EVA itself, the component manufacturer's lamination process also has a great impact if the bonding degree of the EVA is not up to standard, as well as the bonding strength between EVA, tempered glass and. The backplane is insufficient, this will cause premature aging of the EVA and affect the life of the components.
3) Cells
The main function is to produce electricity. The main market for electricity production ist that of crystalline silicon solar cells and thin film solar cells, both of which have their own advantages and disadvantages. . Crystalline silicon solar cells have relatively low equipment costs, but the consumption and costs of the cells are high, but the photoelectric conversion efficiency is also high, which makes them suitable for power generation under the outdoor sunlight. Thin-film solar cells have relatively high equipment costs, but the equipment costs are relatively high. battery consumption and costs are high. The cost is very low, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good, and can also generate electricity under ordinary light, such as For example. solar cells on calculators.
4) EVA
Solar panel
Function as above, mainly connecting and encapsulating the main body and power generation backplane< /p>