APPARATUS AND METHOD FOR RECEIVING WIRELESS POWER

• US 20160241046A1
• Filed: 05/08/2015
• Published: 08/18/2016
• Est. Priority Date: 02/16/2015
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: LEE, Dong Hyuk, SONG, Ji Yeon
• Granted Patent: US 9,979,233 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

The embodiment relates to an apparatus and a method for receiving wireless power. The apparatus for receiving the wireless power according to the embodiment includes: a coil to receive the power; and a metal member to be detected by the apparatus for transmitting wireless power, wherein the coil has an empty central region, the metal member is disposed in the empty central region of the coil, and the metal member includes a stainless steel plate.

Claims

1. An apparatus for receiving wireless power from an apparatus for transmitting the wireless power, the apparatus comprising:

a coil to receive the power; and

a metal member to be detected by the apparatus for transmitting the wireless power,

wherein the coil has an empty central region, the metal member is disposed in the empty central region of the coil, and the metal member includes a stainless steel plate.

2. The apparatus according to claim 1, wherein the stainless steel plate is an alloy containing at least 8 wt % of chrome (Cr) and at least 75 wt % of iron (Fe).

3. The apparatus according to claim 1, wherein the stainless steel plate is an alloy containing 16 wt % to 18 wt % of chrome (Cr) and at least 80 wt % of iron (Fe).

4. The apparatus according to claim 1, wherein the stainless steel plate comprises STS430.

5. The apparatus according to claim 1, wherein an intensity of a magnetic flux density of the stainless steel plate is at least 32 G (Gauss).

6. The apparatus according to claim 1, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

7. The apparatus according to claim 1, wherein the coil includes any one of a winding coil structure and a lead frame coil structure.

8. The apparatus according to claim 7, wherein the winding coil structure includes a first coil and a second coil and the first coil and the second coil are stacked.

9. The apparatus according to claim 8, wherein the first coil is wound in such a manner that a diameter of the first coil becomes smaller from one end of the first coil corresponding to a predetermined number of windings, and an opposite end of the first coil is connected to one end of the second coil to allow the second coil to be wound in such a manner that a diameter of the second coil becomes increased corresponding to a predetermined number of windings.

10. The apparatus according to claim 9, further comprising an insulation layer provided between the stacked first coil and the second coil, wherein the opposite end of the first coil and the one end of the second coil are connected by way of a through hole.

15. The apparatus according to claim 2, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

16. The apparatus according to claim 3, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

17. The apparatus according to claim 4, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

18. The apparatus according to claim 5, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

19. The apparatus according to claim 6, wherein the stainless steel plate has a diameter in the range of 8 mm to 12 mm.

11. A method for receiving wireless power from an apparatus for transmitting the wireless power, the method comprising:

triggering a sensor of the apparatus for transmitting the wireless power by a metal member in an apparatus for receiving the wireless power;

transmitting an effective signal to the apparatus for transmitting the wireless power;

receiving an identification signal from the apparatus for transmitting the wireless power; and

receiving the power from the apparatus for transmitting the wireless power,

wherein the metal member includes a stainless steel plate.

12. The method according to claim 11, wherein the stainless steel plate comprises an alloy containing at least 8 wt % of chrome (Cr) and at least 75 wt % of iron (Fe).

13. The method according to claim 11, wherein the stainless steel plate comprises an alloy containing 16 wt % to 18 wt % of chrome (Cr) and at least 80 wt % of iron (Fe).

14. The method according to claim 11, wherein the stainless steel plate comprises STS430.