Composition of home energy storage power supply system

Energy source
Photovoltaic panels: convert solar energy into direct current.
Energy Management and Conversion: Inverter/Controller. Converts DC power generated by photovoltaic panels into AC power usable in the home. Provides intelligent charging management for lithium batteries. Enables seamless switching between mains power, batteries, and photovoltaics.
Energy storage unit: Lithium batteries store surplus electricity generated by photovoltaics and release it at night or on cloudy days.

Electricity Use and Distribution: Household Loads/Electrical Equipment
Priority: Real-time use of photovoltaic power generation.
Secondary: Electrical energy stored using lithium batteries.
Backup: When the power of the photovoltaic system and batteries is insufficient, it automatically switches to the mains power grid.

Backup energy (optional): Municipal power grid, serving as a backup power source to ensure uninterrupted power supply. In the "surplus power to the grid" mode, excess photovoltaic power can be sold back to the grid.