Receiver for wireless charging system

• US 9,413,191 B2
• Filed: 01/09/2013
• Issued: 08/09/2016
• Est. Priority Date: 01/09/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: KthePower, Inc.
• Inventors: Kim, Si-Han, Na, Gi-Yong
• Primary Examiner(s): Tso, Edward
• Application Number:
  US14/369,350
• Publication Number:
  US 20150054455A1
• Time in Patent Office: 1,308 Days
• Field of Search: 320/107, 320/108, 320/112, 307/104
• US Class Current: 1/1
• 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 wireless charging receiver having a wireless charging coil capable of receiving a wireless charging energy using non-contact type magnetic induction and a part for generating a predetermined output power from the wireless charging energy received by the wireless charging coil, the wireless charging receiver comprising:

a ferrite sheet;

a NFC coil 50 coupled with the ferrite sheet;

the wireless charging coil 52 being provided in an inside space surrounded by the NFC coil 50 with a apart from the NFC coil 50 in a mutually insulated state;

wherein a first circuit path for receiving a data through the NFC coil 50 and a second circuit path for receiving the wireless charging energy through the wireless charging coil 52 are mutually insulated,

and wherein the ferrite sheet, the NFC coil 50 and the wireless charging coil 52 are combined into a set and the set is provided in a portable device.

2. The wireless charging receiver according to claim 1, wherein the NFC coil 50 and the wireless charging coil 52 are spaced apart from each other between 1 mm to 10 mm.

3. The wireless charging receiver according to claim 1, wherein the part includes a control unit 10 for controlling reception of wireless charging energy.

4. The wireless charging receiver according to claim 1, wherein a battery is embedded in the portable device and the wireless charging coil 52 is provided on a surface of the battery.

5. The wireless charging receiver according to claim 4, wherein the part is provided on a side surface of the battery.

6. The wireless charging receiver according to claim 5, further comprising a first substrate 55 for mounting the part and a second substrate for mounting the wireless charging coil 52, NFC coil 50 and the ferrite sheet,

and wherein the first substrate 55 is provided on the side surface of the battery and the second substrate is provided on the surface of the battery,

and wherein the first substrate 55 and the second substrate are connected to each other using a flexible connection line 57 in a bending state.

7. The wireless charging receiver according to claim 6, wherein the part 55a is between the first substrate and the side surface of the battery.

8. The wireless charging receiver according to claim 1, wherein the set is provided in a lower case 61 of the portable device.

9. The wireless charging receiver according to claim 8, wherein the set is provided in the lower case of the portable device and an attaching film 62 is further provided on the set.

10. The wireless charging receiver according to claim 1, wherein a space is constructed by forming a groove on the ferrite sheet, and the NFC coil 50 and the wireless charging coil 52 are provided in the space.

11. The wireless charging receiver according to claim 1, wherein the NFC coil 50 and the wireless charging coil 52 are provided on a surface of the ferrite sheet.

12. The wireless charging receiver according to claim 1, wherein the ferrite sheet is also provided between the NFC coil 50 and the wireless charging coil 52.

13. The wireless charging receiver according to claim 1, wherein the ferrite sheet is made of a material selected among manganese, zinc and iron.

14. The wireless charging receiver according to claim 13, wherein the ferrite sheet is made of a material selected among manganese oxide, zinc oxide and iron oxide.

15. The wireless charging receiver according to claim 1, wherein the set is two or more and the sets are overlapped each other.

16. The wireless charging receiver according to claim 1, wherein the set is provided on a surface of a battery and a surface area occupied by the wireless charging coil 52 is 40 to 90% of an area of the surface of the battery.

17. The wireless charging receiver according to claim 1, wherein the set is provided on a surface of a case and a surface area occupied by the wireless charging coil 52 is 40 to 90% of an area of the surface of the case.

18. The wireless charging receiver according to claim 17, wherein the set is provided on an inner surface of the case and a protection film is further comprised on the wireless charging coil 52.

19. The wireless charging receiver according to claim 17, wherein the set is provided on an outer surface of the case and a protection film is further comprised on the wireless charging coil 52.

20. The wireless charging receiver according to claim 16, further comprising a protection film on the wireless charging coil 52.