Definition of
Solar Panel:
Solar panel is a device that absorbs sunlight and directly or indirectly converts solar radiation energy into electricity through the photoelectric effect or photochemical effect. The main material of most solar panels is "silicon", but due to the relatively low production cost It is so big that it has some limitations in its universal use. Compared to ordinary batteries and rechargeable batteries, solar cells are more energy-efficient and environmentally friendly green products.
The classification of solar panels:
The solar cells currently on the market are divided into amorphous silicon and crystalline silicon. Among them, crystalline silicon can be divided into polycrystalline silicon and single crystal silicon. From the perspective of the photoelectric conversion efficiency of the two materials: single crystal silicon sunpower (up to 22%)> polycrystalline silicon (18%).
Selection method of solar panel:
1. When we purchase solar panels, the focus is on the power of solar cells. Generally speaking, the power of solar panels is directly proportional to the area of solar wafers. The area of a solar cell wafer is not exactly the same as the area of a solar encapsulation panel, because although some solar cell panels are large, the gap between a single solar wafer arrangement is wide, and the power of such solar cell panels is not necessarily high.
2. Generally speaking, is the power of the solar cell panel greater the better? In this way, the electric current generated in the sun is large, and the built-in battery can be quickly filled. But in reality, you need to find a balance between the power of solar panels and the portability of solar chargers.
Solar panel selection tips:
With the extensive use of various solar products, the use of solar panels in our lives is becoming more and more widespread. But in the face of various types of solar panels in the market, how do we choose? Now let's learn the selection of solar panels.
1. Selection of battery capacity of solar panel
Because the input energy of the solar panel photovoltaic power generation system is extremely unstable, it generally needs to be equipped with a battery system to work, and solar lamps are no exception, and must be equipped with a battery to work. Their capacity choice directly affects system reliability and system price. The selection of battery capacity should generally follow the following principles: firstly, the energy of the solar cell module during the day can be stored as much as possible under the premise of meeting the night lighting, and the electric energy that can meet the lighting requirements at night in continuous rainy days should be stored. The battery capacity is too small to meet the needs of night lighting, and the battery capacity is too large. On the one hand, the battery is always in a state of power loss, which affects the battery life and causes waste.
2, the choice of solar panel power
The output power of the solar cell is the output power of the solar cell under standard solar light conditions, that is, according to international standards, radiation intensity 1000W / m2, atmospheric quality AM1.5, and temperature 25 ° C.
