The output current of the solar panel is related to the rated voltage. The rated output current of a 12V/100W solar panel is: 100W÷12V＝8.33A; The rated output current of a 24V/100W solar panel is: 100W ÷ 24V＝4.17A.
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, the highest reaching 24%. This is the highest photoelectric conversion efficiency among all types of solar cells, but the production cost is so high that it is not yet universally available. Since monocrystalline silicon is usually encapsulated in tempered glass and waterproof resin, it is strong and durable and has a lifespan of up to 25 years.
Detailed information:
1. The role of tempered glass is to protect the main bodymain power generation (such as cells), and there are requirements for its light transmission selection.
2. EVA is used to bond and fix tempered glass and the main power generation body (such as battery cells). The quality of the transparent EVA material directly affects the lifespan of the component to which the EVA is exposed. the air is prone to aging and yellowing. This affects the light transmission of the component, thereby affecting the power generation quality of the component in addition to the quality of the EVA itself.
The lamination process of component manufacturers also has a big impact. For example, if the bonding degree of EVA is not up to standard and the bonding strength between EVA, tempered glass and backplane is insufficient, this will occur. cause premature aging of the EVA and affect the service life of the component.
3. FunctionThe main purpose of cells is to produce electricity. The main market for power generation is crystalline silicon solar cells and thin-film solar cells, both of which have their own advantages and disadvantages. Crystalline silicon solar cells have relatively low equipment costs, but high consumption and cell costs. However, the photoelectric conversion efficiency is also high and is more suitable for generating electricity under outdoor sunlight.
Thin-film solar cells have relatively high equipment costs, but low consumption and battery costs. However, the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good. , and it can also be used under ordinary lights. Can produce electricityé, like the solar cells of a calculator.
Baidu Encyclopedia-Solar panel
1.6A. The 18V30W photovoltaic solar panel can directly charge the 12v battery. An anti-reflux diode must be added. However, the 30w photovoltaic panel has less charging power for the 200Ah battery. It takes several days to fully charge the voltage. The 12V battery is 14.4V. The maximum charging voltage of the 30W photovoltaic solar panel is 1.6A. For a 200Ah battery, there is only undercharging and no overload. It can be seen that the current generated by the 18V solar panel is 30W. relatively small.