The Structure Of Solar Panels

1) Tempered glass

Its function is to protect the main body of power generation (such as battery), and the selection of light transmission is required. 1. The light transmittance must be high (generally more than 91%); 2. Ultra-white tempering treatment

2) EVA

It is used to bond and fix the tempered glass and the main body of power generation (such as batteries). 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 turn yellow, which affects the light transmittance of the module, thereby affecting the In addition to the quality of the EVA itself, the power generation quality of the module is also greatly affected by the lamination process of the module manufacturer. For example, the adhesiveness of the EVA is not up to standard, and the bonding strength of the EVA to the tempered glass and the backplane is not enough, which will cause the EVA to age prematurely, affecting the component life.

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 of which have their own advantages and disadvantages. Crystalline silicon solar cells, the equipment cost is relatively low, but the consumption and cell cost are high, but the photoelectric conversion efficiency is also high, and it is more suitable to generate electricity in outdoor sunlight; thin-film solar cells, relatively high equipment cost, but consumption and battery The cost is very low, but the photoelectric conversion efficiency is more than half that of crystalline silicon cells, but the low-light effect is very good, and it can also generate electricity under ordinary light, such as solar cells on calculators.