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Solar Panel Structure
- Apr 08, 2018 -

1) the role of toughened glass to protect the power main body (e.g., battery), pervious to light the selection is required, 1. High light transmittance must (generally more than 91%); 2. Super white steel processing

2) EVA fixed toughened glass used for bonding and generator main body (e.g., battery), the merits of the transparent EVA material directly affect the life of the components, exposed to the air in the EVA aging yellow, thus affect the light transmittance of the component, thus affect the quality of the component's power in addition to the quality of EVA itself, the component manufacturer of laminating process influence is very big, such as EVA adhesive degree is not up to standard, EVA and toughened glass, the back adhesive strength is not enough, will cause EVA early ageing, affecting the service life of components.

Main effect of 

3) cell is power generation, power generation main market is the mainstream in the crystalline silicon solar cells, thin film solar cells, both have their own advantages and disadvantages. Crystalline silicon solar cell, the equipment cost is relatively low, but consumption and cell costs are high, but the photoelectric conversion efficiency is high, in the outdoor sun power is good; Thin film solar cells, and relative equipment cost is higher, but low consumption and cost of batteries, but the photoelectric conversion efficiency relative to crystalline silicon cells in half, but weak light effect is very good, in the ordinary light also can power generation, such as the solar cells on the calculator.

4) EVA as above, the main bonding encapsulation power main body and the back

5) back, sealing, insulation, waterproof (usually with TPT, TPE and so on material must be resistant to ageing, most of the components manufacturers warranty for 25 years, toughened glass, aluminum alloy is generally no problem, the key is in the back and the silicone can meet the requirements.)

6) aluminum alloy layer pressure, seal, support role

7) junction box to protect the whole power generation system, have the effect of current transit, if the component junction box automatically disconnect short circuit battery series, to prevent burn out the whole system. Junction box is most critical in the selection of diodes, depending on the type of component inside the cell is different, the corresponding diode is not the same

8) silicone sealing function, which is used to seal components and aluminum alloy frame, the component and junction box junction. Some companies use double-sided tape, foam instead of silicone, which is widely used in domestic silica gel, the craft is simple, convenient, easy to operate, and low cost.