Charging system for robot and control method thereof

A method of controlling a charging system for a robot, the method comprising:

• receiving, by a communication interface of the robot, boarding information from a server;
• determining, by at least one sensor of the robot, whether the robot arrives at a destination of a user included in the boarding information;
• determining, by a processor of the robot, a charging amount of a charged power when the at least one sensor determines that the robot has arrived at the destination of the user;
• receiving, by a processor of the robot, charging availability information of charging stations from the server;
• determining, by a processor of the robot, a charging station based on the charging availability information by taking a location of the robot;
• controlling, by the processor of the robot, the robot to move to the charging station;
• charging the robot at the charging station;
• transmitting, by the charging station, the charging availability information including a charging state of each robot to the server;
• and
• moving the robot to a repository for a reserved user or moving the robot to a mounting station to mount an auxiliary device when the auxiliary device is necessary for a movement of the reserved user, after the charging of the robot is completed.