Multiple connection switch, and charging location-selective electric vehicle charging system comprising same

A charging location-selective charging system comprising:

• an AC/DC converting system configured to convert AC power into DC power;
• a request power manipulation unit comprising DC/DC converters connected to an output stage of the AC/DC converting system and an open circuit connection switch connected to an output stage of each of the DC/DC converters;
• charging adapters installed in at least some of parking spaces of a parking lot;
• a power grid configured to connect the DC/DC converters and the charging adapters between the DC/DC converters and the charging adapters;
• and
• a multi-connection switch connected to three or more electric wires of the power grid and configured to selectively form a connection path by connecting some electric wires, among the three or more electric wires,
• wherein the multi-connection switch comprises:
• contacts in a plurality of directions, which are connected to a longitudinal conductor from an outside and are capable of electrical incoming and outgoing;
• internal wirings formed of longitudinal conductors which mutually connect the contacts;
• one or more switches configured to connect or disconnect any one part of the internal wirings and installed in a corresponding internal wiring;
• and
• a control unit configured to make ON or OFF the switch, and
• wherein one or more switches are installed in any one of the internal wirings, and electricity that is input in any one of the plurality of directions is capable of being selectively output in any one direction other than the direction in which the electricity is input.