Solar Panel Structure Composition

- Sep 18, 2019-

1) the purpose of tempered glass is to protect the main body of power generation (such as battery), and the selection of light transmission is required. 2. Super white steel treatment

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.

3) the main function of the battery is to generate electricity. The main market for power generation is crystal silicon solar cell and thin film solar cell, both of which have advantages and disadvantages. Crystal silicon solar cells, the equipment cost is relatively low, but the cost of consumption and battery is high, but the photoelectric conversion efficiency is also high, it is more appropriate to generate electricity in the outdoor sunshine; Thin-film solar cells, relatively high equipment cost, but very low consumption and battery cost, but photoelectric conversion efficiency is more than half of the crystal silicon cell, but the weak light effect is very good, can also generate electricity under ordinary lights, such as the solar cell on the calculator.

4) EVA functions as above, mainly binding package power generation main body and back plate

5) back plate function, sealing, insulation, waterproof (generally TPT, TPE and other materials must be aging resistant, most of the components manufacturers are warranty for 25 years, tempered glass, aluminum alloy is generally no problem, the key is with the back plate and silicone can meet the requirements.)

6) aluminum alloy protective laminate, which plays a certain role in sealing and supporting

7) the junction box protects the entire power generation system and ACTS as a current relay station. If the components short-circuit the junction box automatically disconnects the short-circuit battery string to prevent the whole system from being burnt out. The most important thing in the junction box is the selection of diodes, which are different depending on the type of battery in the component

8) silicone seal function, used to seal the junction between components and aluminum alloy frame, components and junction box. Some companies use double-sided tape, foam to replace silica gel, silica gel is widely used in China, simple process, convenient, easy to operate, and the cost is very low.