Do you know the working principle of solar aluminum profiles and their components?

Photovoltaic modules are the central part of the entire solar aluminum profile power generation system. They are composed of photovoltaic module sheets or photovoltaic modules of different standards cut by laser cutting machines or steel wire cutting machines. Because the current and voltage of a single photovoltaic cell are very small, it must first be connected in series to obtain high voltage, and then connected in parallel to obtain high current, output through a diode (to prevent current return), and then packaged in a stainless steel, aluminum or other non-metallic On the frame, install the upper glass and back panel, fill with nitrogen, and seal.

Combining photovoltaic modules in series and parallel forms a square array of photovoltaic modules, also called a photovoltaic array. Working principle: Sunlight shines on the p-n junction of the semiconductor to form a new hole-electron pair. Under the action of the electric field of the p-n junction, holes flow from the p area to the n area, and electrons flow from the n area to the p area. After the circuit is connected, constitute a current. Its function is to convert solar energy into electrical energy and send it to the battery for storage or to promote load operations.

Component type:

1. Monocrystalline silicon: The photoelectric conversion rate is ≈18%, and can reach up to 24%. It has the highest conversion rate among all photovoltaic modules. It is generally encapsulated with tempered glass and waterproof resin. It is strong and durable and has a service life of up to 25 years. Year.
2. Polycrystalline silicon: The photoelectric conversion rate is ≈ 14%, which is similar to the manufacturing process of monocrystalline silicon. The difference between polycrystalline silicon is that the photoelectric conversion rate is lower, the price is lower, and the life is shorter. However, polycrystalline silicon materials are easy to make, save power consumption, and are productive. The cost is low, so it has been vigorously developed.
3. Amorphous silicon: The photoelectric conversion rate is ≈10%. It is completely different from the manufacturing method of monocrystalline silicon and polycrystalline silicon. It is a thin-film solar cell. The process is greatly simplified, the silicon material consumption is very small, and the power consumption is lower. It The main advantage is that it can generate electricity in low light conditions.