WIRELESS POWER TRANSMISSION APPARATUS FOR HIGH EFFICIENCY ENERGY CHARGING

• US 20170237279A1
• Filed: 05/01/2017
• Published: 08/17/2017
• Est. Priority Date: 06/07/2013
• Status: Active Grant

• Current Assignee: Industry-Academic Cooperation Foundation, Dankook University, Samsung Electronics Co. Ltd.
• Original Assignee: Industry-Academic Cooperation Foundation, Dankook University, Samsung Electronics Co. Ltd.
• Inventors: KO, Yeong Seok, PARK, Shi Hong, KWON, Ui Kun, YOON, Seung Keun, KIM, Sang Joon
• Granted Patent: US 10,447,087 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type

Abstract

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.

Claims

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, and disconnect the resonator from the power supply unit; and

a controller configured to control the first switching unit based on voltage applied to an input resistor of the power supply unit.

2. The apparatus of claim 1, wherein the controller comprises a current sensor configured to sense the amount of the current based on the voltage applied to the input resistor.

3. The apparatus of claim 2, wherein:

the current sensor comprises a comparator configured to compare the voltage applied to the input resistor to predetermined voltage corresponding to an amount of predetermined current; and

the controller is configured to control a turning on and off of the first switching unit based on a result of the comparing.

4. The apparatus of claim 1, wherein the controller is configured to turn off the first switching unit in response to the voltage applied to the input resistor being greater than or equal to a reference voltage.

5. The apparatus of claim 1, wherein the first switching unit comprises:

a transistor disposed between the power supply unit and the resonator; and

a diode connected in series to the transistor.