WIRELESS POWER TRANSMITTING AND RECEIVING DEVICE

• US 20130082537A1
• Filed: 06/04/2012
• Published: 04/04/2013
• Est. Priority Date: 09/29/2011
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Yong Hae, CHEON, Sang Hoon, LEE, Myung Lae, KANG, Seung Youl, ZYUNG, Taehyoung
• Application Number:
  US13/487,760
• Publication Number:
  US 20130082537A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields

Abstract

Disclosed is a wireless power transmitting and receiving device which includes a wireless power receiving device comprising a receiving coil configured to receive a non-radiated electromagnetic wave; and a frequency adjusting unit configured to adjust a resonant frequency of the receiving coil and a wireless power transmitting device comprising a transmission coil configured to generate a non-radiated electromagnetic wave by magnetic induction with a power coil; and a frequency adjusting unit configured to adjust a resonant frequency of the transmission coil. The frequency adjusting unit adjusts a resonant frequency of the receiving coil by closing a surroundings of the receiving coil by a magnetic sheet. The frequency adjusting unit adjusts a resonant frequency of the transmission coil by inserting a magnetic sheet in the transmission coil.

Claims

1. A wireless power receiving device comprising:

a receiving coil configured to receive a non-radiated electromagnetic wave; and

a frequency adjusting unit configured to adjust a resonant frequency of the receiving coil,

wherein the frequency adjusting unit adjusts a resonant frequency of the receiving coil by closing a surroundings of the receiving coil by a magnetic sheet.

2. The wireless power receiving device of claim 1, further comprising:

a load coil supplied with energy stored at the receiving coil by magnetic induction.

3. The wireless power receiving device of claim 1, wherein the frequency adjusting unit includes a capacitor connected to the receiving coil.

4. The wireless power receiving device of claim 1, wherein the receiving coil has a copper line to generate a magnetic field, and the copper line is buried at a groove of the magnetic sheet.

5. The wireless power receiving device of claim 1, wherein the receiving coil has a copper line to generate a magnetic field, and the frequency adjusting unit adjusts a contact area between the copper line and the magnetic sheet.

6. The wireless power receiving device of claim 5, wherein the frequency adjusting unit linearly adjusts a contact area between the copper line and the magnetic sheet.

7. The wireless power receiving device of claim 1, wherein the magnetic sheet is formed of a bilayer including an adhesive substance and a magnetic substance.

8. The wireless power receiving device of claim 7, wherein the magnetic substance is formed of ferrite.

9. A wireless power transmitting device comprising:

a transmission coil configured to generate a non-radiated electromagnetic wave by magnetic induction; and

a frequency adjusting unit configured to adjust a resonant frequency of the transmission coil,

wherein the frequency adjusting unit adjusts a resonant frequency of the transmission coil by inserting a magnetic sheet in the transmission coil.

10. The wireless power transmitting device of claim 9, wherein the wireless power transmitting device includes a power coil receiving a power, wherein the power coil resonates with the transmission coil by magnetic induction.

11. The wireless power transmitting device of claim 9, wherein the frequency adjusting unit includes a capacitor connected to the transmission coil.

12. The wireless power transmitting device of claim 9, wherein the transmission coil has a copper line generating a magnetic field, and the copper line is buried at a groove of the magnetic sheet.

13. The wireless power transmitting device of claim 9, wherein the transmission coil has a copper line generating a magnetic field, and a contact area between the magnetic sheet and the copper line is adjustable.