In solar power terms, a solar battery definition is an electrical accumulator to store the electrical energy generated by a photovoltaic panel in a solar energy installation. Sometimes they are also known as photovoltaic batteries.
Solar battery technology stores the electrical energy generated when solar panels receive excess solar energy in the hours of the most remarkable solar radiation.
The batteries have the function of supplying electrical energy to the system at the moment when the photovoltaic panels do not generate the necessary electricity.
When the solar panels can generate more electricity than the electrical system demands, all the energy demanded is supplied by the panels, and the excess is used to charge the batteries.
Batteries transform the electrical energy they receive from photovoltaic modules into chemical energy. This conversion is carried out from the reaction that occurs when two different materials, such as those of the positive and negative plates, are immersed in the electrolyte. The electrolyte is a solution of sulfuric acid and water.
Electricity flows from the battery as soon as an electrical circuit is connected between the positive and negative poles.
As the battery discharges, the lead composition in the plates is more similar. At this time, the density of the acid decreases, and the voltage between terminals decreases.
The ability to undergo a constant charging and discharging process is known as the cycling resistance of a battery.
Solar batteries work using DC electricity. Since the PV panels generate a direct current, there is no problem when charging. However, most domestic devices at home work using AC. Usually, the system has an inverter that converts DC into AC.
