ELECTRONIC TAG DEVICE, WIRELESS CHARGING SYSTEM OF ELECTRONIC TAG DEVICE, ELECTRONIC SHELF LABEL SYSTEM, AND METHOD FOR MANAGING POWER THEREOF

摘要

The present invention relates to an electronic tag, an electronic tag wireless charging system, an electronic label system, and a power management method thereof. The electronic tag comprises; a wireless power receiving unit which wirelessly receives power by using a wireless power transmission method; a storage battery which charges the power received from the wireless power receiving unit; a monitoring unit which monitors a power state of the storage battery; a display unit which outputs power state information from the monitoring unit on a screen; and a first wireless communications unit which wirelessly transmits the power state information from the monitoring unit with tag identification information by using a first wireless communications. According to the present invention, the wireless power charging of the electronic tag, the charging monitoring of the electronic tag using a wireless communications, and power management and control can be performed integrally.