The solar battery module is the main part of the solar power supply system, and it is also the most valuable component in the solar power system. Its function is to convert the sun’s radiant energy into DC power;
Principle of power generation: The working principle of crystalline silicon n/p-type solar cells: When p-type semiconductors and n-type semiconductors are closely combined and connected together, a p-n junction is formed at the interface between the two. When the photovoltaic cell is irradiated by sunlight, the accumulation of positive and negative charges is formed on both sides of the p-n junction, resulting in a photovoltaic voltage and a built-in electric field, which is the “photovoltaic effect”. Theoretically speaking, at this time, if the electrodes are drawn out on both sides of the built-in electric field and connected to an appropriate load, a current will be formed, and power will be obtained from the load. The battery component of the off-grid photovoltaic power generation system is a solid device that uses the electronic properties of semiconductor materials to achieve P-V conversion.