Wireless power transmission apparatus for high efficiency energy charging

摘要

A wireless power transmission apparatus for high efficiency energy charging, includes a resonator configured to transmit power, and a power supply unit configured to supply power to the resonator. The apparatus further includes a first switching unit configured to connect the resonator to the power supply unit, and disconnect the resonator from the power supply unit, and a controller configured to control the first switching unit based on an amount of current flowing into the resonator.

主权项

1. A wireless power transmission apparatus for high efficiency energy charging, the apparatus comprising:
a resonator configured to transmit power; a power supply unit configured to supply power to the resonator; a first switching unit configured to connect the resonator to the power supply unit such that the resonator receives power, and disconnect the resonator from the power supply unit such that the resonator does not receive power; and a controller comprising a current sensor configured to sense an amount of current flowing into the resonator, and configured to control the first switching unit based on the amount of current flowing into the resonator wherein: the current sensor comprises
a second switching unit configured to control a flow of current mirrored from the current flowing into the resonator, anda comparator configured to compare voltage corresponding to the mirrored current to predetermined voltage corresponding to an amount of predetermined current; andthe controller is configured to control a turning on and off of the first switching unit based on a result of the comparing.