WIRELESS POWER TRANSMISSION METHOD FOR PREVENTING FREQUENCY INTERFERENCE

• US 20120280574A1
• Filed: 12/01/2011
• Published: 11/08/2012
• Est. Priority Date: 05/04/2011
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Corp., UIF Yonsei University
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Kim, Singu, Hur, Namwoong
• Granted Patent: US 9,276,641 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60R 25/406 Power supply in the remote key
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The present invention relates to a wireless power transmission method for preventing frequency interference, and more particularly, to a wireless power transmitter and a wireless power transmission method for preventing frequency interference that flexibly controls an operation of the wireless power transmitter in order to avoid signal interference and collision between different apparatuses using frequencies adjacent to a frequency band of a power signal transmitted from the wireless power transmitter.

Claims

1. A wireless power transmission method for preventing frequency interference in a wireless power system including a wireless power transmitter and an adjacent-frequency-using apparatus, the method comprising:

generating and transmitting, by the wireless power transmitter, a power signal to the adjacent frequency-using apparatus;

receiving, by the adjacent-frequency=using apparatus, the power signal and obtaining power from the power signal; and

generating and transmitting, by the adjacent-frequency-using apparatus, a power transmission restriction signal to the wireless power transmitter when preparing for an operation start.

2. The method of claim 1, further comprising stopping, by the wireless power transmitter, operating when receiving the power transmission restriction signal.

3. The method of claim 1, wherein the generating and transmitting, by the adjacent-frequency-using apparatus, the power transmission restriction signal to the wireless power transmitter when preparing for an operation start step further includes firstly transmitting the power transmission restriction signal and standing by for a predetermined stand-by time and thereafter, starting to operate.

4. The method of claim 1, wherein in the generating and transmitting, by the adjacent-frequency-using apparatus, the power transmission restriction signal to the wireless power transmitter when preparing for an operation start step, the adjacent-frequency-using apparatus consistently transmits the power transmission restriction signal to the wireless power transmitter.

5. The method of claim 4, further comprising:

stopping the transmission of the power transmission restriction signal when the operation of the adjacent-frequency-using apparatus stops; and

resuming generation and transmission, by the wireless power transmitter, of the power signal as the reception of the power transmission restriction signal stops.