Optical storage solution(Micro Inverter): The combination of photovoltaic power generation system and energy storage system, convert solar energy into electrical energy, and achieve the balance of local loads through the battery charge or discharge. Use micro-inverter to replace traditional string inverter, module-level MPPT, maximize the power generation efficiency of the photovoltaic power generation system. At the same time, the low input DC voltage makes the system safer. The battery can convert excess ac into direct current for storage, and then convert it into alternating current for discharge when the power is insufficient, and the charging and discharging processes need to be protected. Non-polarity miniature circuit breaker can realize bidirectional protection of cable.