Method and system for wireless charging using radio wave

• US 8,830,888 B2
• Filed: 05/20/2011
• Issued: 09/09/2014
• Est. Priority Date: 05/20/2010
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Shin, Young-Shik, Sim, Dae-Hyun, Lee, Chang-Seok, Cho, Beom-Soo, Kim, Hyun-Soo, Kim, Se-Yeon
• Primary Examiner(s): Hailu, Kibrom T
• Assistant Examiner(s): Beyen, Zewdu A
• Application Number:
  US13/112,794
• Publication Number:
  US 20110286374A1
• Time in Patent Office: 1,208 Days
• Field of Search: 370328-331, 370336-339, 370341-345, 370/437, 370480-482, 370/491, 455/412, 455/168.1, 455/188.1, 455/418, 455/422.1, 455/432.1, 455/432.3
• US Class Current: 370/311
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

A method and system for wireless charging using a radio wave. The method includes scanning a radio wave of an access point, determining an available charging frequency band among frequency bands, sending the access point a request for transmitting a charging radio wave at the charging frequency band, and switching power output from an antenna, to a battery circuit.

Claims

1. A method for wirelessly charging an electronic device using a radio wave, the method comprising:

searching for a plurality of neighboring devices by scanning wireless Local Area Network (WLAN) frequency bands;

identifying a subset of neighboring devices that are not in use from the searched plurality of neighboring devices;

selecting a neighboring device among the identified subset of neighboring devices;

determining a charging frequency band based on the selected neighboring device;

sending the selected neighboring device a request for transmitting a charging radio wave at the determined charging frequency band;

switching a power output of an antenna to a battery circuit;

receiving the charging radio wave on the charging frequency band by the antenna; and

if the charging of the electronic device is completed, switching a signal output from the antenna to a signal processing circuit.

2. The method of claim 1, wherein the charging radio wave includes binary data comprising a succession of values set to ‘

1’

.

3. The method of claim 1, wherein the charging radio wave includes a direct current (DC) component.

4. The method of claim 1, wherein the electronic device is one of a cellular phone using a battery, a wireless Internet terminal, a smart phone, a Portable Digital Assistant (PDA), a mobile computer inclusive of a notebook computer, a laptop computer, a palmtop computer, or a portable printer.

5. The method of claim 1, wherein the electronic device is one of a radio set, a MPEG Audio Layer-3 (MP3) player, a cassette, a television (TV), a portable card checker, an electric car, an electric bicycle, an electric scooter, an electric boat, a robot, a plaything, a tool, a speed camera, a camcorder, an aircraft, a spaceship, or an artificial satellite.

6. An apparatus configured to wirelessly charge an electronic device using a radio wave, the apparatus comprising:

a controller configured to;

search for a plurality of neighboring devices by scanning wireless Local Area Network (WLAN) frequency bands;

identify a subset of neighboring device that are not in use from the searched plurality of neighboring devices;

select a neighboring device among the identified subset of neighboring devices;

determine a charging frequency band based on the selected neighboring device;

send the selected neighboring device a request for transmitting a charging radio wave at the determined charging frequency band; and

switch a power output of an antenna to a battery circuit,

wherein the antenna is configured to receive the charging radio wave on the charging frequency band and wherein, if the charging of the electronic device is completed, a signal output from the antenna is switched to a signal processing circuit.

7. The apparatus of claim 6, wherein the charging radio wave includes binary data comprising a succession of values set to ‘

1’

.

8. The apparatus of claim 6, wherein the charging radio wave includes a direct current (DC) component.

9. The apparatus of claim 6, wherein the electronic device is one of a cellular phone using a battery, a wireless Internet terminal, a smart phone, a Portable Digital Assistant (PDA), a mobile computer inclusive of a notebook computer, a laptop computer, a palmtop computer, or a portable printer.

10. The apparatus of claim 6, wherein the electronic device is one of a radio set, a MPEG Audio Layer-3 (MP3) player, a cassette, a television (TV), a portable card checker, an electric car, an electric bicycle, an electric scooter, an electric boat, a robot, a plaything, a tool, a speed camera, a camcorder, an aircraft, a spaceship, or an artificial satellite.