Classification of solar panel batteries currently on the market

A solar panel battery is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. Thin-film solar cells that work on the photoelectric effect are the mainstream, and how to choose and buy solar cells puzzles some people. Today, I will briefly introduce the knowledge about solar battery purchase. Hope it helps you.

Solar panel batteries 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 three materials: monocrystalline silicon (up to 17%)>polycrystalline silicon (12-15%)>amorphous silicon (about 5%). However, crystalline silicon (monocrystalline silicon and polycrystalline silicon) basically does not generate current under weak light, and amorphous silicon has a good weak light type (the energy is inherently low under weak light). Therefore, on the whole, it is suitable to use monocrystalline silicon or polycrystalline silicon solar cell materials.
When we purchase solar cells, the focus of attention is the power of solar cells. Generally speaking, the power of solar panel is directly proportional to the area of solar chips. The area of the solar cell wafer is not exactly equal to the area of the solar packaging panel, because although some solar panels are large, the gaps in which single solar wafers are arranged are very wide, and the power of such solar panels is not necessarily high.

Generally speaking, the larger the power of the solar panel, the better, so that the current generated under the sun is large, and the built-in battery can be fully charged quickly. But in reality, it is necessary to find a balance between the power of solar panels and the portability of solar chargers. It is generally believed that the minimum power of the solar charger should not be lower than 0.75w, and the sub-power solar panel has a current of 140mA under standard strong light. The current generated under normal sunlight is about 100mA. If the charging current is too small under the sub-power, basically there will be no obvious effect.

With the widespread use of various solar panel products, the use of solar cells in our lives is also becoming more and more widespread.