Receiving antenna and wireless power receiving device including the same

• US 10,333,358 B2
• Filed: 05/09/2018
• Issued: 06/25/2019
• Est. Priority Date: 06/20/2013
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Bae, Seok, Kim, Yu Seon, Lee, Sang Hak, Choi, Don Chul, Hyun, Soon Young
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Thapa, Sailesh
• Application Number:
  US15/975,106
• Publication Number:
  US 20180262064A1
• Time in Patent Office: 412 Days
• Field of Search: 320108
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a first soft magnetic layer stacked on the substrate, and including a soft magnetic material, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, and including a first coil layer wound in parallel with the soft magnetic layer, and a second coil layer electrically connected to the first coil layer and wound in parallel with the first coil layer, and a current direction of the first coil layer is opposite to a current direction of the second coil layer.

Claims

1. A wireless power receiving device, comprising:

a magnetic layer;

a wireless power receiving coil including a first coil layer disposed on the magnetic layer, and a second coil layer disposed on the first coil layer of the wireless power receiving coil;

a near field communication coil including a first coil layer disposed on the magnetic layer, and a second coil layer disposed on the first coil layer of the near field communication coil; and

a support film disposed between the first coil layer of the wireless power receiving coil and the second coil layer of the wireless power receiving coil,

wherein the wireless power receiving coil is surrounded by the near field communication coil,

wherein the support film includes a first hole,

wherein the first coil layer of the wireless power receiving coil is connected to the second coil layer of the wireless power receiving coil through the first hole of the support film, and

wherein the first coil layer of the near field communication coil is connected to the second coil layer of the near field communication coil.

2. The wireless power receiving device according to claim 1, wherein the first coil layer of the wireless power receiving coil includes a first connection portion and a second connection portion,

wherein the second coil layer of the wireless power receiving coil includes a first connection portion and a second connection portion, and

wherein the first connection portion of the first coil layer of the wireless power receiving coil is connected to the first connection portion of the second coil layer of the wireless power receiving coil through the first hole of the support film.

3. The wireless power receiving device according to claim 2, wherein the second connection portion of the first coil layer of the wireless power receiving coil is connected to the second connection portion of the second coil layer of the wireless power receiving coil through a second hole of the support film.

4. The wireless power receiving device according to claim 1, further comprising a terminal connected to the wireless power receiving coil and the terminal also connected to the near field communication coil.

5. The wireless power receiving device according to claim 4, further comprising a circuit unit connected to the wireless power receiving coil through the terminal, and configured to convert electromagnetic energy into electrical energy.

6. The wireless power receiving device according to claim 5, further comprising a storage unit configured to store the electrical energy.

7. The wireless power receiving device according to claim 1, further comprising a circuit unit connected to the wireless power receiving coil, and configured to convert electromagnetic energy into electrical energy.

8. The wireless power receiving device according to claim 7, further comprising a storage unit configured to store the electrical energy.

9. The wireless power receiving device according to claim 1, wherein a pattern formed by the first coil layer of the wireless power receiving coil is the same as a pattern formed by the second coil layer of the wireless power receiving coil.

10. The wireless power receiving device according to claim 9, wherein the first coil layer of the wireless power receiving coil is disposed on a first surface of the support film,

wherein the second coil layer of the wireless power receiving coil is disposed on a second surface of the support film opposite to the first surface, and

wherein the first coil layer of the wireless power receiving coil is disposed such that its position on the first surface of the support film directly corresponds to a position of the second coil layer of the wireless power receiving coil on the second surface of the support film.

11. The wireless power receiving device according to claim 1, wherein the first coil layer of the wireless power receiving coil is disposed on a first surface of the support film,

wherein the second coil layer of the wireless power receiving coil is disposed on a second surface of the support film opposite to the first surface, and

wherein the first coil layer of the wireless power receiving coil is disposed such that its position on the first surface of the support film directly corresponds to a position of the second coil layer of the wireless power receiving coil on the second surface of the support film.

12. The wireless power receiving device according to claim 1, wherein a current direction of the first coil layer is opposite to a current direction of the second coil layer.

13. The wireless power receiving device according to claim 1, wherein the support film is disposed between the first coil layer of the near field communication coil and the second coil layer of the near field communication coil.

14. The wireless power receiving device according to claim 1, wherein the first coil layer of the wireless power receiving coil and the first coil layer of the near field communication coil are on a same plane.