The invention relates to the technical field of
energy storage and charging, and discloses an
energy storage and charging integrated
system. Through the invention, on one hand, the
energy storage characteristic can be utilized to reduce the
power load of an
AC power grid and power distribution equipment, break through the power limitation of original power distribution equipment and
power grid infrastructure, and improve the use efficiency of
power equipment in a charging place; and, on the other hand, the purpose of free flowing of energy among the
power grid, the energy storage device and the
electric vehicle can be achieved by switching multiple charging / feeding
modes, multiple possibilities of
energy management are provided, and the use efficiency of the internal converter is improvedto a great extent. In addition, an
electric vehicle or an energy storage device can be used for reversely feeding the alternating-current
power grid, therefore,
electric energy is provided for alternating-
current electric equipment of other users on an alternating-current power grid, an energy-saving
electric vehicle battery performance detection mode is provided for the users by discharging the electric vehicle, the service diversity of charging equipment is provided, and the economic value is improved.