Patent ID: 9106094
Filing Date: 2015-08-11
Classification: H02J

Abstract:
1. A wireless charging system, comprising: a charging device; and a portable electronic device that charges a secondary battery by utilizing electromagnetic waves being output from the charging device, wherein the portable electronic device includes: a plurality of receiving units that receive the electromagnetic waves being output from the charging device; a charging state monitoring unit that monitors a charging state of the secondary battery and determines an adjustment based on a quantity of power received or a low charged level relative to a predetermined value; and a first communication unit that communicates the adjustment to the charging device, and wherein the charging device includes: a plurality of output units that output the electromagnetic waves; a second communication unit that communicates with the portable electronic device to receive the adjustment; and an output control unit that controls an output from the plurality of output units, based on a result of monitoring by the charging state monitoring unit to adjust a quantity of power that is output from the plurality of output units based on the adjustment so that the plurality of output units output an adjusted quantity of power to the portable electronic device, wherein, when a plurality of portable electronic devices are placed on the charging device, the output control unit controls output of the plurality of output units, based on each result of monitoring the charging states received from the plurality of portable electronic devices, so that electromagnetic waves are preferentially output to a portable electronic device having a low quantity of power received or a low charged level among the plurality of portable electronic devices, and wherein, when the portable electronic device, to which the electromagnetic waves were preferentially output, reaches a predetermined charged state, the output control unit controls output of the plurality of output units, so that electromagnetic waves are output to the other portable electronic devices.