The solar off-grid power generation system is composed of solar panels, solar controllers, inverters, battery packs, loads, etc. The solar array converts solar energy into electric energy, charges the battery pack through the controller, and then supplies power to the load through the inverter. Since there is an extra battery between the solar and the inverter, there will be many changes in the current trend and equipment selection.The off-grid inverter produced by Jntech integrates the controller and the inverter with one.

Does solar power generation have to enter the battery first and then the load?

If the current enters the battery and then is discharged, 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 directly used 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 realized automatically by the circuit supply.

From the circuit principle, the current can only be 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 charging state, and all the electrical energy of the load is provided by the photovoltaic. When the solar power is less than the load power, the battery is in a discharged state, and all solar power generation is directly supplied to the load without the battery.
When the solar output and the load power are similar or slightly larger, the solar current can be directly supplied to the load without passing through the battery, and the off-grid system has the highest efficiency; when photovoltaic power generation and load use are not in the same time period, for example, solar power generation during the day, and the load uses electricity at night At this time, photovoltaic power generation must first enter the battery and then enter the load, and the efficiency of the off-grid system is low. The battery cable should be designed according to the maximum battery charging and discharging current. The same inverter has different currents in different applications, so different calculations are required.