Battery pack with wireless power transmission resonator

• US 8,957,629 B2
• Filed: 12/14/2010
• Issued: 02/17/2015
• Est. Priority Date: 12/14/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ryu, Young Ho, Park, Eun Seok, Kwon, Sang Wook, Hong, Young Tack, Kim, Nam Yun
• Primary Examiner(s): Muralidar, Richard V
• Assistant Examiner(s): DIBENEDETTO, MICHAEL N
• Application Number:
  US12/967,159
• Publication Number:
  US 20110140541A1
• Time in Patent Office: 1,526 Days
• Field of Search: 320/108, 343/745, 343/700.MS
• US Class Current: 320/108
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 7/0045 concerning the insertion or the connection of the batteries

Abstract

A battery pack employing a resonator for wireless power transmission is provided. The battery pack may include a thin film type resonator for a wireless power transmission. The battery pack may also include a battery to charge a power source using power generated by the thin film type resonator.

Claims

1. A battery pack comprising:

a thin film type resonator for wireless power transmission; and

a battery to charge a power source using power generated by the thin film type resonator, wherein

the thin film type resonator comprises a first transmission line unit which is provided in a thin film type,

wherein the first transmission line unit comprises a matcher configured to adjust impedance of the first transmission line unit by changing physical shape of the matcher.

2. The battery pack of claim 1, wherein the thin film type resonator comprises:

a second transmission line unit provided in a thin film type; and

a capacitor inserted into a predetermined position of the first transmission line unit.

3. The battery pack of claim 2, wherein the second transmission line unit is disposed in a lower portion of the battery.

4. The battery pack of claim 1, wherein the thin film type resonator comprises a ferromagnetic body.

5. The battery pack of claim 1, wherein a high impedance surface is provided between the thin film type resonator and the battery.

6. The battery pack of claim 1, wherein the thin film type resonator comprises:

a capacitor inserted into a predetermined position of the first transmission line unit; and

a micro strip line to supply a current to the first transmission line unit.

7. The battery pack of claim 6, wherein the thin film type resonator further comprises a bonding layer to bond to the battery.

8. The battery pack of claim 6, wherein the capacitor is configured such that the thin film type resonator has a property of a metamaterial.

9. The battery pack of claim 6, wherein the capacitor is configured such that the thin film type resonator has a negative magnetic permeability at a target frequency.

20. The battery pack of claim 1, further comprising a matching control configured to set one or a combination of a resonance bandwidth and an impedance matching frequency of the thin film type resonator.

10. A battery pack comprising:

a resonator for wireless power transmission;

a battery to charge a power source using a power generated by the resonator; and

a blocking portion to block a surface current induced by a magnetic field formed between the resonator and the battery,

wherein the resonator comprises a transmission line unit which is provided in a thin film type,

wherein the transmission line unit comprises a matcher configured to adjust impedance of the transmission fine unit by changing physical shape of the matcher.

11. The battery pack of claim 10, wherein the resonator is provided in a three-dimensional (3D) type in which a plurality of thin film resonators are arranged in parallel.

12. The battery pack of claim 10, wherein the blocking portion is configured to have a high impedance surface.

13. A wirelessly chargeable battery pack, comprising:

a thin film type resonator configured to generate power wirelessly; and

a battery configured to charge a power source using power generated by the thin film type resonator, wherein

the thin film type resonator comprises a first transmission line unit which is provided in a thin film type,

wherein the first transmission line unit comprises a matcher configured to adjust impedance of the first transmission line unit by changing physical shape of the matcher.

14. The wirelessly chargeable battery pack of claim 13, wherein the thin film type resonator comprises a second transmission line unit that functions as a second thin film type resonator;

and the first transmission line unit functions as a first thin film type resonator.

15. The wirelessly chargeable battery pack of claim 14, wherein the wirelessly chargeable battery pack includes a stacked structure such that the first transmission line unit is disposed on a top surface of the battery and the second transmission line unit is disposed on a bottom surface of the battery that is opposite to the top surface of the battery.

16. The wirelessly chargeable battery pack of claim 14, wherein the wirelessly chargeable battery pack includes a stacked structure such that the first transmission line unit is stacked on a top surface of the battery, a dielectric layer is stacked on a top surface of the first transmission line, and the second transmission line is stacked on a top surface of the dielectric layer.

17. The wirelessly chargeable battery pack of claim 15, wherein a high impedance surface is disposed between the first transmission line unit and the battery and the high impedance surface is disposed between the battery and the second transmission line unit.

18. The wirelessly chargeable battery pack of claim 13, wherein the thin film type resonator comprises a capacitor, and the capacitor is inserted in series into an intermediate portion of the first transmission line unit and an electric field is confined within the capacitor.

19. The wirelessly chargeable battery pack of claim 18, wherein the thin film type resonator further comprises a feeding unit configured in the shape of a micro-strip line that supplies current to the transmission line unit.