Solar Energy is free green energy obtained from sunlight every day. Solar photovoltaic modules convert solar energy into electricity during the day. The components and functions of solar panels:
surface material (select one below) :
- PET: The English name is Polyethylene terephthalate, referred to as PET. It is divided into two types: frosted and bright. It is the outermost layer of the solar panel. It mainly protects the solar cells and high light transmittance to ensure that the solar panels generate electricity.
- ETFE: The English name is Ethylene Tetra Fluoro Ethylene), referred to as ETFE, tetrafluoroethylene copolymer. Its laminated surface is uneven, and its lifespan will be longer than PET, but shorter than glass, but the effect is the same.
- glass: It is the outermost layer of the solar panel and must be strong and have good light transmittance for better panel performance. The main function of tempered glass is to protect solar cells from harsh weather, dirt and dust.
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EVA: EVA sheet or "ethylene vinyl acetate " is used to bond encapsulated cell sheets and surface material layers. It should be durable and able to withstand extreme temperatures and humidity.
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Solar cells : An important part of solar panels, solar cells are strung together to make solar panels, including welding, packaging, installing them on metal frames, testing, etc. The efficiency of solar panels is related to solar energy Directly proportional to the efficiency of the cell. The cost and efficiency of solar cells affect the overall performance of the solar panel.
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EVA: EVA sheet or "ethylene vinyl acetate" is used to bond the encapsulated battery cells to the back material layer. It should be durable and able to withstand extreme temperatures and humidity.
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back material (select one below) :
- PET: The last layer of the panel, providing mechanical protection and electrical insulation. It is essentially a protective layer.
- PCB: The final layer of the panel, providing mechanical protection and electrical insulation. It is essentially a protective layer. Another thing is that there will be a circuit part on it.
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border : The aluminum frame is also a key component as it provides structural strength to the panel. It is recommended to use a frame made of strong but lightweight material . It should be strong and able to withstand extreme conditions such as strong winds and external forces. There is also one that protects the four corners of the glass plate so that it will not cause the entire piece to shatter in the event of a collision.
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junction box : The junction box is fixed on the back of the panel. It is the central point where the wires interconnect with the solar panel . Protect the solar panel wiring from water ingress and play a waterproof role.
The above are the important components of solar panels: surface material + EVA + cells + EVA + back material = solar panel. If you want to know more about solar panels, please follow us.
