Due to the increasing charging power of electric vehicles and the insufficient distribution capacity of stations, we have introduced a DC bus based energy storage charging system. The energy storage and charging system uses lithium batteries as energy storage devices. Through local and remote EMS management systems, it achieves the balance and optimization of power supply and power demand among the power grid, battery, and tram. It can also facilitate access to photovoltaic systems, bringing application value in peak and valley power consumption, distribution network capacity expansion, and other aspects.