Portable terminal having a wireless charger coil and an antenna element on the same plane

• US 8,922,162 B2
• Filed: 12/06/2011
• Issued: 12/30/2014
• Est. Priority Date: 08/08/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Jin-Hyoung, Kim, Ki-Hyun, Ko, Kil-Soo, Park, Se-Ho, Park, Sung-Kweon
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US13/312,359
• Publication Number:
  US 20130038278A1
• Time in Patent Office: 1,120 Days
• Field of Search: 320/107, 320/108, 320/114, 320/115
• US Class Current: 320/108
• 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 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: H04M 2250/04 including near field communication means, e.g. RFID
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A portable terminal having a wireless charger coil and an antenna element on the same plane is provided, in which a shielding member is attached to an inner surface of an external part, a first coil is attached to one surface of the shielding member, facing the inner surface of the external part, and a second coil is attached to the one surface of the shielding member, surrounding the first coil on the same plane.

Claims

1. A portable terminal comprising:

a shielding member attached to an inner surface of an external part;

a first coil attached to a surface of the shielding member that faces the inner surface of the external part;

a second coil attached to the surface of the shielding member, wherein the second coil surrounds the first coil on a same plane; and

a load switch providing a first connection line for connecting the first coil to a battery pack of the portable terminal and a second connection line for connecting the second coil to a communication circuit of the portable terminal,

wherein the load switch prevents signal or power interference between the first connection line and the second connection line.

2. The portable terminal of claim 1, wherein the first coil is a secondary coil for inductive coupling with a charger and the second coil is an antenna element.

3. The portable terminal of claim 1, wherein the first coil is an antenna element and the second coil is a secondary coil for inductive coupling with a charger.

4. The portable terminal of claim 1, further comprising a battery mounting recess formed on a housing of the portable terminal, wherein the external part is a battery cover detachably engaged with the housing, for opening or covering the battery mounting recess.

6. The portable terminal of claim 1, wherein the second coil is a Near Field Communication (NFC) antenna element.

7. The portable terminal of claim 1, further comprising an NFC control circuit built in the portable terminal, wherein one of the first and second coils is connected to a communication circuit of the portable terminal through the NFC control circuit.

8. The portable terminal of claim 1, further comprising a wireless charging control circuit built in the external part or the portable terminal, wherein one of the first and second coils is connected to a battery pack of the portable terminal via the wireless charging control circuit.

9. The portable terminal of claim 1, further comprising a magnetic piece attached to the surface of the shielding member, in an area surrounded by the first coil.

5. The portable terminal of 1, wherein a battery pack connected to the first coil is accommodated in the portable terminal and the first coil is a secondary coil for inductive coupling with a charger, connected to the battery pack.

10. A portable terminal comprising:

a shielding member attached to an inner surface of an external part;

a first coil attached to a surface of the shielding member that faces the inner surface of the external part; and

a second coil attached to the surface of the shielding member, wherein the second coil surrounds the first coil on a same plane,

wherein the shielding member comprises;

a first accommodation groove formed into the surface of the shielding member; and

a second accommodation groove surrounding the first accommodation groove on the surface of the shielding member,

wherein the first coil is accommodated in the first accommodation groove and the second coil is accommodated in the second accommodation groove.

11. The portable terminal of claim 10, wherein the shielding member further comprises a protrusion portion formed of a paramagnetic material, surrounded by the first accommodation groove.

12. The portable terminal of claim 10, further comprising a magnetic piece formed of a paramagnetic material, attached to an area surrounded by the first accommodation groove.

13. The portable terminal of claim 10, wherein the shielding member further comprises a shielding wall between the first and second accommodation grooves.

14. The portable terminal of claim 10, wherein the shielding member is formed by injection-molding a mixture of an iron powder and synthetic resin.

15. The portable terminal of claim 14, wherein the synthetic resin is one of Poly Carbonate (PC), Poly Amide (PA), Acrylonitrile-Butadiene-Styrene (ABS) copolymer, and Nylon.