Components of solar cells

The function of tempered glass is to protect the power generation body (such as battery cells), and there are requirements for the selection of transparent materials: 1. The transmittance must be high (generally above 91%); 2. Ultra white steel treatment.
EVA is used to bond and fix tempered glass and power generation bodies (such as battery cells), and the quality of transparent EVA material directly affects the lifespan of the components. Mainly bonding and encapsulating the power generation body and backplate.
The main function of solar 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.
The function of the backboard is to seal, insulate, and waterproof (usually made of materials such as TPT and TPE that must be resistant to aging, and most component manufacturers provide a 25 year warranty. Tempered glass and aluminum alloy are generally not a problem, but the key is whether the backboard and silicone can meet the requirements.)
Aluminum alloy protective laminates provide certain sealing and support functions.
The junction box protects the entire power generation system and serves as a current transfer station. If a component short circuits, the junction box automatically disconnects the short-circuit battery string to prevent the entire system from being burned out. The most critical factor in the junction box is the selection of diodes, which vary depending on the type of battery cells inside the component.
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 tape and foam instead of silicone. Silicone is widely used in China, with a simple process, convenience, easy operation, and low cost.

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