Receiver for wireless charging system

• US 9,653,942 B2
• Filed: 07/05/2016
• Issued: 05/16/2017
• Est. Priority Date: 01/09/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: KthePower, Inc.
• Inventors: Na, Gi-Yong, Kim, Si-Han
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US15/201,915
• Publication Number:
  US 20160315497A1
• Time in Patent Office: 315 Days
• Field of Search: 320107, 320108, 320112, 307104
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/245 made from sheets, e.g. grain-oriented H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• 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 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• 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 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H04M 1/03 : Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Abstract

A receiver for a wireless charging system, capable of receiving power energy using non-contact type magnetic induction, includes a coil capable of receiving the power energy and a part for generating a predetermined output power from the power energy received by the coil, a portable terminal, an NFC coil further provided outside of the coil, and a ferrite sheet further provided at the coil and the NFC coil.

Claims

1. A cellular phone having a lower case, an upper case, a charging battery, a controller, an NFC module, a circuit for communication, and a receiver which receives a wireless charging energy, transfers the charging energy to the charging battery,

the receiver comprises:

an NFC coil;

a wireless charging coil which receives the wireless charging energy and is provided in an inside space surrounded by the NFC coil with 1 millimeter to 10 millimeters apart from the NFC coil;

a ferrite sheet which mounts both the NFC coil and the wireless charging coil; and

an insulation film which wraps both the NFC coil and the wireless charging coil;

wherein the controller is connected to the wireless charging coil through a first connection line and the NFC module is connected to the NFC coil through a second connection line,

and wherein the first connection line and the second connection line are electrically separated each other, and exposed to an outside of the insulation film, and connected to the controller and to the NFC module respectively.

2. The cellular phone according to claim 1, wherein the distance between a wireless charging coil and the NFC coil is 5 millimeters to 10 millimeters.

3. The cellular phone according to claim 1, wherein the insulation film is disposed between the lower case and the circuit for communication and unattached to either the lower case or the circuit for communication.

4. The cellular phone according to claim 1, wherein the wireless charging coil is provided inside the upper case or the lower case.

5. The cellular phone according to claim 1, wherein the insulation film is provided on a surface of the charging battery.

6. The cellular phone according to claim 5, further comprising a PCB which mounts the charging controller and is provided on a side of the charging battery.

7. The cellular phone according to claim 5, wherein an area where the wireless charging coil occupies is 40% to 90% of an area of the surface of the battery.

8. The cellular phone according to claim 1, wherein the insulation film is provided on a surface of the lower case.

9. The cellular phone according to claim 8, wherein an area where the wireless charging coil occupies is 40% to 90% of an area of the surface of the lower case.

10. The cellular phone according to claim 1, wherein the ferrite sheet has a groove, and the wireless charging coil and the NFC coil are provided in the groove.

11. The cellular phone according to claim 1, wherein the wireless charging coil comprises two coils having different charging modes each other.

12. The cellular phone according to claim 11, wherein one of the two coils is inactive while the other is active.

13. The cellular phone according to claim 1, wherein the NFC coil is inactive while the wireless charging coil is active.

14. The cellular phone according to claim 1, wherein the ferrite sheet, the wireless charging coil and the NFC coil are provided as a film and attached to the charging battery or the lower case as one set.

15. The cellular phone according to claim 1, wherein the wireless charging coil is provided on an inner surface of the lower case and attached using a protection film.

16. The cellular phone according to claim 2, wherein the insulation film is disposed between the lower case and the circuit for communication and unattached to either the lower case or the circuit for communication.

17. The cellular phone according to claim 2, wherein the insulation film is provided on a surface of the charging battery.

18. The cellular phone according to claim 17, further comprising a PCB which mounts the controller and is provided on awe side of the charging battery.

19. The cellular phone according to claim 2, wherein the insulation film is provided on a surface of the lower case.

20. The cellular phone according to claim 2, wherein the ferrite sheet, the wireless charging coil and the NFC coil are provided as a film and attached to the charging battery or the lower case as one set.