Structural Composition Of Solar Panel

This article will share the structure and function of solar panel.

Structure 1. Tempered glass

Its function is to protect the main body of power generation (such as battery), and its selection is required. 1. The light transmittance must be high (generally more than 91%); 2. Ultra-white steel treatment.

Structure 2. EVA

It is used to bond and fix tempered glass and power generation main body (such as battery). The quality of transparent EVA material directly affects the service life of the solar panel. EVA exposed to the air is prone to aging and yellowing, thus affecting the light transmittance and power generation quality of the module.

Structure 3. Battery slice

The main role is to generate electricity. The mainstream of the solar panel market is crystalline silicon solar cells and thin film solar cells. Crystalline silicon solar cells have relatively low equipment cost and high photoelectric conversion efficiency, but high consumption and cell costs; Thin film solar cells, which have relatively high equipment costs, but low consumption and battery costs, can also generate electricity under ordinary lighting, such as solar cells on calculators.

Structure 4. Back plate

Its function is to seal, insulate and waterproof.

Structure 5. Aluminum alloy

Protect the laminated parts and play a certain role in sealing and supporting.

Structure 6. Junction box

Protect the whole power generation system and play the role of current transfer station. If the module short circuit junction box automatically disconnects the short circuit battery string to prevent burning the whole solar panel.

Structure 7. Silica gel

The sealing function is used to seal the junction between the assembly and the aluminum alloy frame, and between the assembly and the junction box.