(3) Standby battery inverter: a special inverter, by the battery as its power supply, with the battery charger to charge the battery, if there is too much power, will be recharged to the AC power end. This inverter can provide AC power to the specified load when the grid power supply is switched off, so it needs to have islanding protection function.
4, battery (not required for grid-connected system)
The battery is the device for storing electricity in the photovoltaic power generation system. At present, there are four kinds of lead-acid maintenance-free batteries, ordinary lead-acid batteries, colloidal batteries and alkaline nickel-cadmium batteries, and lead-acid maintenance-free batteries and colloidal batteries are widely used.
Working principle: During the day, the sun shines on the photovoltaic module, generates DC voltage, converts the light energy into electricity, and then transmits it to the controller, after the overcharge protection of the controller, the electricity from the photovoltaic module is transmitted to the battery for storage, for use when needed.
email:1583694102@qq.com
wang@kongjiangauto.com