CONTACTLESS POWER TRANSMISSION DEVICE AND ELECTRONIC DEVICE HAVING THE SAME

• US 20120274148A1
• Filed: 11/01/2011
• Published: 11/01/2012
• Est. Priority Date: 04/27/2011
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Sung, Jae Suk, An, Chan Gwang, Lim, Dae Ki, Chang, Ki Won, Bae, Sang Woo, Cho, Sung Eun, Kim, Tae Sung, Jeon, Dae Seong, Han, Chang Mok, Nam, Hyeon Gil
• Application Number:
  US13/286,784
• Publication Number:
  US 20120274148A1
• Time in Patent Office: Days
• US Class Current: 307/104
• 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 7/0042 characterised by the mechanical construction
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

There are provided a contactless power transmission device and an electronic device having the same. The contactless power transmission device includes: a flexible substrate; a coil unit formed in the flexible substrate and including a coil part formed to have a wiring pattern form and having a plurality of coil strands connected in parallel with each other to thereby form a single coil pattern; and a circuit unit formed in the flexible substrate and electrically connected to the coil unit.

Claims

1. A contactless power transmission device comprising:

a flexible substrate;

a coil unit formed in the flexible substrate and including a coil part formed to have a wiring pattern form and having a plurality of coil strands connected in parallel with each other to thereby form a single coil pattern; and

a circuit unit formed in the flexible substrate and electrically connected to the coil unit.

2. The contactless power transmission device of claim 1, wherein the flexible substrate is a film type or thin type printed circuit board.

3. The contactless power transmission device of claim 1, wherein the flexible substrate is a polyimide type flexible printed circuit board (FPCB) or a frame retardant 4 (FR-4) type printed circuit board.

4. The contactless power transmission device of claim 1, wherein the coil unit further includes a plate-shaped magnetic part having a magnetic path formed therein and having the coil pattern attached to one surface thereof.

5. The contactless power transmission device of claim 4, wherein the magnetic part comprises a ferrite sheet.

6. The contactless power transmission device of claim 4, further comprising an adhesion part interposed between the magnetic part and the coil part to thereby adhere the magnetic part and the coil part to each other.

7. The contactless power transmission device of claim 1, wherein the coil part has a plurality of coil strands disposed in parallel with each other to thereby form the coil pattern.

8. The contactless power transmission device of claim 1, wherein the coil unit includes the coil pattern formed on at least one of both surfaces of the flexible substrate, and

the coil pattern includes contact pads formed at both ends thereof so as to be electrically connected to the circuit unit.

9. The contactless power transmission device of claim 1, wherein the circuit unit includes exposed pads formed therein so as to be electrically connected to a battery.

10. The contactless power transmission device of claim 8, wherein the coil part includes the coil strands each formed to have the same shape on the both surfaces of the flexible substrate.

11. The contactless power transmission device of claim 10, wherein the flexible substrate includes conductive vias formed at positions at which ends of the coil strands are disposed, and

the coil strands formed on the both surfaces of the flexible substrate are electrically connected to each other by the conductive vias.

12. The contactless power transmission device of claim 10, wherein the coil part includes the coil pattern wound fifteen times on the flexible substrate having a size of 30 mm×

40 mm.

13. The contactless power transmission device of claim 12, wherein the coil part includes the coil strands each having a width of 0.5 mm or more and a thickness of 36 μ

m or more.

14. The contactless power transmission device of claim 12, wherein the coil part has an inductance of 14 μ

H or more and a resistance of 0.98Ω

or less, at a frequency of 125 kHz.

15. An electronic device comprising:

the contactless power transmission device of claim 1; and

a case receiving the contactless power transmission device therein.

16. The electronic device of claim 15, wherein the contactless power transmission device is directly attached to an inner portion of the case or is disposed to be maximally adjacent thereto.

17. The electronic device of claim 15, wherein the contactless power transmission device is attached to the case using an adhesive or a double sided tape.

18. The electronic device of claim 15, further comprising an antenna module including an antenna pattern enclosing the coil pattern of the contactless power transmission device.

19. The electronic device of claim 18, wherein the antenna module is attached to the case, together with the contactless power transmission device.

20. The electronic device of claim 18, wherein the antenna pattern is an in-mold antenna (IMA).

21. The electronic device of claim 18, wherein the contactless power transmission device uses a frequency in a 1 kHz to 100 MHz band, and

the antenna module uses a frequency in a 10 kHz to 5 GHz band.

22. The electronic device of claim 15, wherein the case is an outer case frame or a battery case frame.

23. The electronic device of claim 15, further comprising a battery storing power generated in the contactless power transmission device.