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Components of solar cells

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1. The function of tempered glass is to protect the main body of power generation (such as battery cells), and the selection of light transmittance has requirements:
1. The light transmittance must be high (generally above 91%); 2. Ultra white steel treatment.


2. EVA is used to bond and fix tempered glass and power generation components (such as battery cells), and the quality of transparent EVA material directly affects the
lifespan of the components. Mainly used for bonding and encapsulating the power generation body and backplane.


3. The main function of battery cells is to generate electricity, and the mainstream in the power generation market are crystalline silicon solar cells and thin film solar cells,
each with its own advantages and disadvantages.


4. Backboard function, sealing, insulation, and waterproofing (Generally, materials such as TPT and TPE must be resistant to aging, and most component manufacturers
have a 25 year warranty. Tempered glass and aluminum alloy are generally not a problem, and the key is whether the backboard and silicone can meet the requirements.)


5. Aluminum alloy protective laminated parts play a certain sealing and supporting role.


6. The junction box protects the entire power generation system and serves as a current transfer station. If a component is short circuited, the junction box automatically
disconnects the short circuit battery string to prevent burning out the entire system connection. The most critical aspect of the junction box is the selection of diodes, which
vary depending on the type of battery cells inside the component.


7. Silicone sealing function is used to seal the junction between components and aluminum alloy frames, as well as between components and junction boxes. Some companies
use double-sided adhesive strips and foam to replace silicone. Silicone is widely used in China, with simple, convenient, easy to operate, and low cost.