Movable multifunctional energy storage device

The invention discloses a movable multifunctional energy storage device comprising a box body, battery modules, a battery management system, a plurality of battery racks, a monitoring system, a bidirectional inverter and a grid-connected and off-grid switching device. The box body is divided into a battery compartment and a monitoring compartment through a partition plate. A compartment door is arranged on the partition plate; a plurality of battery racks are mounted in the battery compartment; the battery modules are installed in the battery racks, the battery management system is connected with the battery modules, the monitoring compartment is provided with a monitoring cabinet, a power distribution cabinet, a combiner box and a grid-connected and off-grid switching cabinet, the monitoring system is installed in the monitoring cabinet, the monitoring system is connected with the battery modules, and a plurality of power distribution units and power-on interfaces are installed in thepower distribution cabin