Charging location selectable-type electric vehicle charging method and system

A charging location-selective electric vehicle charging method, comprising:

• connecting an electric vehicle to any one charging adapter among charging adapters installed in all of parking spaces;
• determining, by a charging location-selective charging system for an electric vehicle, a DC/DC converter of corresponding charging power;
• forming a charging electrical wire of a power grid up to an electrical wire that provides corresponding requested power of a corresponding DC/DC converter and a corresponding charging adapter;
• connecting a corresponding open circuit connection switch of the corresponding DC/DC converter;
• charging the corresponding electric vehicle;
• terminating the charging of the corresponding electric vehicle;
• and
• disconnecting the corresponding open circuit connection switch of the corresponding DC/DC converter,
• wherein a multi-connection switch connected to three or more electric wires of the power grid and capable of selectively forming a connection path by connecting some electric wires of the three or more electric wires is installed in the power grid, and
• the DC/DC converter, the power grid, and a charging adapter connected to the electric vehicle, among the charging adapters, are connected to the selectively formed connection path according to an operation of the multi-connection switch.