Automatic battery replacement system and method for transfer robot

An automatic battery replacement system of a transfer robot, comprising:

• a transfer robot which autonomously moves and includes a lifting module which supports and lifts a cargo;
• a battery which is detachably mounted on the transfer robot and is provided as a power source to supply a power required for an operation of the transfer robot;
• and
• a battery replacement robot which sucks and handles the battery and performs an operation of sucking the battery previously mounted on the transfer robot to be removed or mounting a new fully-charged battery on the transfer robot,
• wherein the battery replacement robot sucks the battery using a magnet gripper provided as an electromagnet,
• wherein the battery replacement robot includes:
• a girder installed in a horizontal direction;
• and
• an extendable/retractable member which is slidably coupled onto the girder and is provided to be stretchable in a vertical direction, and
• wherein the magnet gripper is installed on an end of the extendable/retractable member.

An automatic battery replacement method of replacing a battery of a transfer robot which autonomously moves and includes a lifting module which supports and lifts a cargo and detachably mounts the battery used as a power source, comprising:

• a collecting step of collecting information about a remaining capacity of the battery mounted on the transfer robot;
• a command step of issuing a battery replacement command to the transfer robot when it is determined that it is necessary to replace the battery mounted on the transfer robot;
• a moving step of moving the battery replacement robot, which is mounted on an autonomously movable robot, to the transfer robot which needs to replace the battery to perform a battery replacement task;
• a removing step of allowing a battery replacement robot to suck and remove the battery mounted on the transfer robot using a magnet gripper;
• and
• a mounting step of allowing the battery replacement robot to suck a fully-charged battery using the magnet gripper to be mounted on the transfer robot.