Receiver for wireless charging system
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.
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.