The main components of solar photovoltaic modules include the following parts:
1. Photovoltaic cells
- Function: Photovoltaic cells are the core part of photovoltaic modules and are responsible for converting solar energy into electrical energy.
- Material: Common ones include monocrystalline silicon, polycrystalline silicon and thin-film batteries.
2. Glass cover
- Function: Protect photovoltaic cells from damage by the external environment (such as rain, snow, dust, etc.), while having high light transmittance to ensure that sunlight can fully shine on the cells.
- Material: Low-iron tempered glass is usually used, which has high light transmittance and impact resistance.
3. EVA film (ethylene-vinyl acetate copolymer)
- Function: Used to bond photovoltaic cells, glass cover and backplane, providing insulation and moisture-proof functions.
- Features: Has good light transmittance, adhesion and weather resistance.
4. Back Sheet
- Function: Protects the photovoltaic cells on the back of the module from moisture and chemical corrosion, while providing electrical insulation.
- Material: Usually a multi-layer composite material, such as TPT (polyvinyl fluoride composite film) or TPE (polyester film).
5. Frame
- Function: Provides mechanical support and protection for the module, facilitating installation and fixation.
- Material: Usually aluminum alloy is used, which is light, corrosion-resistant and strong.
6. Junction Box
- Function: Connects the electrical energy generated by photovoltaic cells and provides electrical connection and protection functions, usually containing bypass diodes to prevent hot spot effects.
- Feature: Waterproof, dustproof and weather-resistant.
7. Solder Ribbon and Bus Bar
- Function: Used to connect photovoltaic cells, collect and transmit the current generated by the cells to the junction box.
- Material: Usually tin-coated copper strip, with good conductivity and welding performance.
8. Sealing glue
- Function: Used to fill the edges and joints of the module to prevent moisture and dust from entering and ensure the sealing of the module.
- Material: Usually silicone or polyurethane glue.
Summary:
The main components of solar photovoltaic modules include photovoltaic cells, glass cover, EVA film, backplane, frame, junction box, welding ribbon and busbar, and sealant. These parts work together to ensure that photovoltaic modules can efficiently and stably convert solar energy into electrical energy and have a long service life.
Findy Solar has been a custom solar solution provider and high efficiency solar panels manufacturer in China since 2006.