Expandable integrated battery swap station

The utility model relates to an expandable integrated battery swap station, which comprises a battery swap box and a charging box, and the battery swap box and the charging box are in butt joint through a power supply and a signal line electric plug. Wherein the charging box comprises a primary charging box and a secondary charging box; the primary charging box is spliced with the battery replacing box; the secondary charging box is an expansion box and is expanded towards the outer side of the primary charging box; a vehicle lifting mechanism, a vehicle positioning mechanism and a battery replacing channel are arranged on the battery replacing box; the battery replacing trolley moves in the arrangement direction of the battery replacing channel; the charging box is provided with a battery rack, a charging mechanism and a stacker crane; when a vehicle enters the battery replacing box, the vehicle positioning mechanism positions the vehicle, the vehicle lifting mechanism lifts the vehicle and replaces the batt