Talking about why the off-grid power generation system needs a battery
①Remaining energy storage and backup: the storage of photovoltaic energy that exceeds the load demand, and the output of energy when the photovoltaic is weak; the battery saves the excess electrical energy generated by the system when the sun is sufficient, and it is used at night or on a rainy day without wind. Solve the problem of inconsistency between power generation and power consumption.
②Ensure the stable power output of the system: eliminate the fluctuation of photovoltaic input power and the difference with load demand. The working hours and power levels of various electrical equipment have their own changing laws, and it is impossible to make solar energy and electrical loads naturally cooperate. The large energy storage space and good charging and discharging performance of the battery provide favorable conditions for the adjustment of the power and energy of the photovoltaic power generation system.
③Improve power quality and reliability: provide instantaneous energy when voltage fluctuates, flickers, and drops. There are often productive loads in photovoltaic village systems. These loads not only have large capacity, but also generate surge currents and rush currents during startup and operation, such as water pumps, lawn mowers, and refrigerators. The battery's low internal resistance and good performance characteristics can meet the requirements of the above-mentioned inductive load on the power supply.
