Method and apparatus for controlling wireless power transmission

• US 9,954,376 B2
• Filed: 10/19/2015
• Issued: 04/24/2018
• Est. Priority Date: 05/17/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Woo-Ram, Kim, Joon-Il, Park, Sung-Bum, Lee, Young-Min, Kim, Hong-Kweun, Park, Se-Ho, Han, Seung-Woo
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Pham, Duc M
• Application Number:
  US14/886,837
• Publication Number:
  US 20160043573A1
• Time in Patent Office: 918 Days
• Field of Search: 307104
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits

Abstract

A wireless power transmission controlling apparatus and method are provided. The apparatus includes a communication unit; and a controller configured to compute an amount of transmission power to be transmitted, based on information received from a wireless power receiving apparatus; output a wireless power transmission control signal corresponding to the computed amount of transmission power; filter the wireless power transmission control signal and pass a harmonic wave corresponding to a predetermined communication frequency band; and control the communication unit to transmit the wireless power transmission control signal based on the harmonic wave.

Claims

1. An apparatus for controlling wireless power transmission, the apparatus comprising:

a communication unit;

a resonance unit; and

a controller configured to;

compute an amount of transmission power to be transmitted, based on information received from a wireless power receiving apparatus;

output a wireless power transmission signal corresponding to the computed amount of transmission power;

filter the wireless power transmission signal, and pass a wireless power transmission frequency corresponding to a predetermined wireless power transmission frequency band;

filter the wireless power transmission signal and pass a harmonic wave corresponding to a predetermined communication frequency band;

control the resonance unit to transmit the wireless transmission power based on the wireless power transmission frequency; and

control the communication unit to transmit a wireless power transmission control signal based on the harmonic wave.

2. The apparatus of claim 1, wherein the communication unit performs near field communication (NFC).

3. The apparatus of claim 1, wherein the predetermined communication frequency band and the predetermined wireless power transmission frequency band are different frequency bands.

4. The apparatus of claim 1, wherein the predetermined wireless power transmission frequency band is 6.78 MHz.

5. The apparatus of claim 1, wherein the predetermined communication frequency band is 13.56 megahertz (MHz).

6. The apparatus of claim 1, further comprising:

a power unit configured to supply a source power;

a power amplifier configured to amplify the source power based on the computed amount of transmission power and the wireless power transmission signal;

a low pass filter configured to filter the wireless power transmission signal, and pass the wireless power transmission frequency; and

a band pass filter configured to filter the wireless power transmission signal, and pass the harmonic wave.

7. A method of controlling wireless power transmission by a power supplying apparatus, the method comprising:

computing an amount of transmission power to be transmitted, based on information received from a wireless power receiving apparatus;

outputting a wireless power transmission signal corresponding to the computed amount of transmission power;

filtering the wireless power transmission signal, and passing a wireless power transmission frequency corresponding to a predetermined wireless power transmission frequency band;

filtering the wireless power transmission signal and passing a harmonic wave corresponding to a predetermined communication frequency band;

transmitting, through a resonance unit, the wireless transmission power based on the wireless power transmission frequency; and

transmitting, through a communication unit, a wireless power transmission control signal based on the harmonic wave.

8. The method of claim 7, wherein passing the harmonic wave corresponding to the predetermined communication frequency band comprises passing the harmonic wave corresponding to the predetermined communication frequency band from among the wireless power transmission frequency and a plurality of harmonics included in the wireless power transmission signal, in response to a request for transmitting the wireless power transmission control signal.

9. The method of claim 7, wherein the predetermined communication frequency band and the predetermined wireless power transmission frequency band are different band frequency bands.

10. The method of claim 7, wherein the predetermined wireless power transmission frequency band is 6.78 MHz.

11. The method of claim 7, wherein the predetermined communication frequency band is 13.56 megahertz (MHz).

12. The method of claim 7, wherein passing the wireless power transmission frequency corresponding to the predetermined wireless power transmission frequency band comprises passing the wireless power transmission frequency corresponding to the predetermined wireless power transmission frequency band from among the wireless power transmission frequency and a plurality of harmonics included in the wireless power transmission signal, in response to a request for transmission of the transmission power.