Intelligent charging and discharging circuit of household energy storage system and control method

The invention discloses an intelligent charging and discharging circuit of a household energy storage system and a control method, belongs to the related technical field of household energy storage circuits, and discloses the intelligent charging and discharging circuit of the household energy storage system and the control method. The household energy storage system comprises a photovoltaic MPPT unit, a bidirectional DC/DC unit, a bidirectional DC/AC unit, a relay unit, a control communication unit and an energy storage battery, a DC/DC loop is arranged in the household energy storage system, and a charging and discharging improved circuit is formed. The system can realize effective utilization of batteries, reduce economic loss of the batteries, effectively prolong the service life of the batteries, realize parallel use of battery packs of different specifications or different batches, improve the application range of the battery packs, improve the utilization rate of old batteries, and reduce the cost. And