what is Solar PV module
Single solar cell cannot be used as power supply directly. For power supply, several single batteries must be connected in series and parallel and tightly packaged into components. Solar cell module (also called solar panel) is the core part of the solar power generation system, and also the most important part of the solar power generation system. Its function is to convert the solar energy into electric energy, or send it to the storage battery for storage, or push the load to work.
Power generation principle
For positive and negative charges, because the positive and negative charges in the PN junction area are separated, an external current field can be generated, and the current flows from the bottom of the crystal silicon cell to the top of the cell through the load. This is the "photovoltaic effect". When a load is connected between the upper and lower surfaces of the solar cell, a current flows through the load, and the solar cell generates a current; The more photons a solar cell absorbs, the greater the current it generates. The energy of photons is determined by the wavelength. Photons lower than the basic energy cannot produce free electrons. A photon higher than the basic energy will only produce one free electron. Excess energy will make the battery heat up. The effect of electric energy loss will reduce the efficiency of the solar cell
