Patent ID: 7791311
Filing Date: 2010-09-07
Classification: H02J

Abstract:
1. An apparatus for wirelessly sharing power, the apparatus comprising: a first battery which supplies power; a rectifier which is supplied with an alternating current (AC) voltage, converts the AC voltage into a direct current (DC) voltage, and outputs the DC voltage; an inverter which is supplied with the DC voltage, converts the DC voltage into the AC voltage, and outputs the AC voltage; a power control and conversion unit which is connected to the rectifier or the inverter and supplying power to charge the first battery or a second battery that is provided in an external device as a power supply for the first battery; a first communication unit which communicates with the external device; and a charge sensor unit which senses a charge state of the first battery, wherein the charge sensor unit receives a charge state of a neighboring device through the first communication unit if a remaining amount of charge in the first battery is less than a certain amount, and wherein the charge sensor unit does not receive the charge state of the neighboring device through the first communication unit if the remaining amount of charge in the first battery is not less than the certain amount.