Solar panel environmental chamber

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Solar panels are devices that absorb sunlight and convert solar radiation into electricity directly or indirectly through photoelectric or photochemical effects. Most solar panels are mainly made of silicon. However, due to the high cost of fabrication, their universal use still has some limitations.

Compared with ordinary batteries and rechargeable batteries, solar cells are more energy-saving and environmentally friendly green products.

Structural composition:
1. Toughened glass as the main body of power generation protection, the selection of transmission is required, 1. Transparency must be high (generally more than 91%); 2. Ultra-white toughening treatment

2. EVA is used to bond and fix toughened glass and power generation body. The quality of transparent EVA material directly affects the life of components. EVA exposed to air tends to aging and yellowing, thus affecting the transmittance of components. Thus, besides the quality of EVA itself, the lamination process of component manufacturers also has a great impact, such as the bonding degree of EVA is not up to standard, EVA and toughened glass. The insufficient bonding strength of glass and backplane will cause the premature aging of EVA and affect the life of components.
3. The main function of solar cells is to generate electricity. The main market of power generation is crystal silicon solar cells and thin film solar cells, each of which has its own advantages and disadvantages. Crystalline silicon solar cells are relatively low in equipment cost, but high in consumption and cost, but the photoelectric conversion efficiency is also high. It is suitable to generate electricity in outdoor sunshine. Thin film solar cells have higher relative equipment cost, but lower in consumption and battery cost, but the photoelectric conversion efficiency is more than half of that of crystal silicon cells, but the weak light effect is very good, in ordinary lighting. It also generates electricity, such as solar cells on calculators.

4. The function of EVA is as follows, mainly bonding and encapsulating the power generation main body and backplane.

5. Back plate function, sealing, insulation and waterproof (generally TPT, TPE and other materials must be resistant to aging, most component manufacturers have a warranty of 25 years, tempered glass and aluminum alloy are generally no problem, the key is whether the back plate and silica gel can meet the requirements.)

6. Aluminum alloy protective laminates play a certain role in sealing and supporting.

7. The junction box protects the whole power generation system and plays the role of current transfer station. If the short circuit junction box of components automatically disconnects the short circuit battery string, it can prevent burning the whole system. The key of junction box is the choice of diode. According to the different types of batteries in the module, the corresponding diodes are also different.

8. Silicone sealant is used to seal the junction of components and aluminium alloy frames, components and junction boxes. Some companies use double-sided tape and foamed cotton instead of silica gel. Silica gel is widely used in China. The process is simple, convenient, easy to operate, and the cost is very low.

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