The photovoltaic off-grid power generation system is composed of photovoltaic array, solar controller, inverter, battery bank, load, etc. The photovoltaic array converts solar energy into electrical energy, charges the battery pack through the controller, and supplies power to the load through the inverter. Since there is an additional battery between the photovoltaic and the inverter, there will be many changes in the current direction and equipment selection.


Whether photovoltaic power generation must enter the battery first and then enter the load

When the current enters the battery and then discharges it, there will be a certain loss, and it will reduce the life of the battery. So does the inverter have a function that allows the current to be used directly by the load without charging and discharging the battery? In fact, this process can be realized, but it is not realized by the inverter, but automatically realized by the circuit supply.

From the circuit principle, the current can only go in one direction at the same time. 

That is, at the same time, the battery is either charged or discharged, and the battery cannot be charged and discharged at the same time. Therefore, when the solar power is greater than the load power, the battery is in a state of charge, and all the electrical energy of the load is provided by photovoltaics. When the solar power is less than the load power, the battery is in a state of discharge, and all photovoltaic power generation is directly supplied to the load without passing through the battery.