Charging control apparatus and method for electric vehicle and billing system using the same

An electric vehicle (EV) charging control method performed in an EV charging control apparatus, comprising:

• receiving a charging approval message for an EV from a charging management server;
• starting a charging for the EV in response to the charging approval message, and accumulating and measuring an amount of energy charged to the EV;
• recognizing a charging termination operation from a user or the EV, and deriving charging information based on the amount of energy charged in response to the charging termination operation;
• and
• transmitting the charging information to the EV using a short-range wireless communication.

A charging management server comprising:

• a processor;
• a storage device storing instructions executed by the processor and information on at least one charging station, at least one charging control apparatus, at least one electric vehicle (EV), and at least one user of the at least one EV;
• and
• a communication interface for communicating with a server of a communication service provider providing a communication service to a user of an EV and a server of an electric power company,
• wherein the instructions are configured to:
• receive, as connected to the EV, information on the EV, an EV charging control apparatus controlling charging to the EV, and the user of the EV through the communication interface;
• determine whether to approve the charging to the EV based on the received information;
• transmit a charging approval message to the EV when the charging to the EV is determined to be approved through the communication interface;
• receive charging information from the EV charging control apparatus according to a termination of the charging to the EV through the communication interface;
• and
• transmit the charging information as billing information for the charging to the EV to the server of the electric power company through the communication interface.