Wireless Charging and Near Field Communication Dual Coils PCB Structure

Patent metadata

Field	Value
Publication number	US-2016126002-A1
Application number	US-201514621095-A
Country	US
Kind code	A1
Filing date	Feb 12, 2015
Priority date	Oct 29, 2014
Publication date	May 5, 2016
Grant date	—

Abstract

A wireless charging (WLC) (A4WP) and near field communication (NFC) dual coils PCB structure comprising at least one WLC (A4WP) coil wire having spiral shape and disposed on a printed circuit board (PCB), and a NFC coil wire having spiral shape and disposed on the PCB. At least a portion of the coil wire of the spiral WLC (A4WP) coil is located on a region between two adjacent coil wires of the spiral NFC coil. Therefore, the present invention makes use of spaces of WLC (A4WP) coil such as A4WP or other relevant standards combined with the NFC coil, so that the dual coil of the present invention can reduce the area of the PCB occupied by the electronic device.

First claim

What is claimed is:

1 . A wireless charging (WLC) (A4WP) and near field communication (NFC) dual coils printed circuit board structure, comprising:
at least one WLC (A4WP) coil having spiral coil wires and arranged on at least a face of a printed circuit board (PCB); at least one NFC coil having spiral coil wires and arranged on the face of the PCB, wherein at least a portion of the coil wires of the WLC (A4WP) coil are arranged on a region between two adjacent spiral coil wires of the NFC coil.

2 . The dual coils PCB structure in claim 1 , wherein the spiral coil wires of the WLC (A4WP) coil are interlaced with the spiral coil wires of the NFC coil with 1:1 ratio.

3 . The dual coils PCB structure in claim 2 , wherein the spiral coil wires of the WLC coil have larger width than the spiral coil wires of the NFC coil.

4 . The dual coils PCB structure in claim 1 , wherein the spiral coil wires of the WLC (A4WP) coil are interlaced with the spiral coil wires of the NFC coil with M:1 ratio, where M is an integer equal to or larger than two.

5 . The dual coils PCB structure in claim 4 , wherein the spiral coil wires of the WLC (A4WP) coil have substantial the same or the similar width as the spiral coil wires of the NFC coil.

6 . The dual coils PCB structure in claim 1 , wherein the PCB is single-faced board, two-faced board or multi-layer board.

7 . The dual coils PCB structure in claim 1 , wherein the PCB is arranged on a ferrite plate.

8 . The dual coils PCB structure in claim 1 , wherein the coil wires of the WLC (A4WP) coil and the NFC coil are of circular spiral shape, rectangular spiral shape or polygonal spiral shape and arranged on the face of the PCB.

9 . The dual coils PCB structure in claim 1 , further comprising at least one connection edge part having a plurality of connection pads and provided on a lateral side of the PCB, the connection pads respectively connected to two wire terminals of the spiral coil wires of the WLC (A4WP) coil, and/or two terminals of the spiral coil wires of the NFC coil.

10 . The dual coils PCB structure in claim 9 , wherein one of the wire terminals of the WLC (A4WP) coil is electrically connected to one of the connection pads of the connection edge part through another face of the PCB or inter-layer of the PCB.

11 . The dual coils PCB structure in claim 9 , wherein one of the wire terminals of the NFC coil is electrically connected to one of the connection pads of the connection edge part through another face of the PCB or inter-layer of the PCB.

Assignees

• Tdk Taiwan Corp

Inventors

• Chien Feng-Lung
• Oishi Takahiro
• Chen Mao-Chun
• Wu Chi-Fu
• Chang Chao-Neen

Classifications

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J50/005

  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 title

• H02J7/70

  characterised by the mechanical construction · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title