Non-contact wireless communication coil, transmission coil, and portable wireless terminal

Patent metadata

Field	Value
Publication number	US-9634515-B2
Application number	US-201615091375-A
Country	US
Kind code	B2
Filing date	Apr 5, 2016
Priority date	Nov 2, 2011
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A chargeable communication module is provided, which includes: a wireless power charging coil; a wireless communication coil being electrically isolated from the wireless power charging coil; and a magnetic body. The wireless power charging coil is disposed on a surface of the magnetic body. The wireless communication coil is arranged peripheral to the wireless power charging coil. A center of the wireless power charging coil is offset from a center of the wireless communication coil.

First claim

The invention claimed is:

1. A chargeable communication module comprising:
a wireless power charging coil;
a wireless communication coil being electrically isolated from the wireless power charging coil; and
a magnetic sheet;
wherein the wireless power charging coil is disposed on a surface of the magnetic sheet,
the wireless communication coil includes a winding portion arranged peripheral to the wireless power charging coil, and
a center of the wireless power charging coil is offset from a center of the wireless communication coil.

2. The chargeable communication module according to claim 1 , wherein the wireless power charging coil has a first resonant frequency and the wireless communication coil has a second resonant frequency different from the first resonant frequency.

3. The chargeable communication module according to claim 2 , wherein the first resonant frequency of the wireless power charging coil is lower than the second resonant frequency of the wireless communication coil.

4. The chargeable communication module according to claim 1 , further comprising:
a substrate on which the wireless communication coil is arranged;
wherein the wireless communication coil is interposed between the substrate and the surface of the magnetic sheet.

5. The chargeable communication module according to claim 1 , wherein the wireless communication coil has a polygonal shape defined by multiple sides and multiple corner portions, and
a first shortest distance between the wireless power charging coil and the wireless communication coil at one of the corner portions is greater than a second shortest distance between the wireless power charging coil and the wireless communication coil at one of the sides.

6. The chargeable communication module according to claim 5 , wherein the wireless power charging coil has a circular shape.

7. The chargeable communication module according to claim 1 , wherein the wireless power charging coil has a circular shape.

8. The chargeable communication module according to claim 1 , wherein the wireless communication coil has multiple sides and multiple corner portions.

9. The chargeable communication module according to claim 1 , wherein a number of windings included in the wireless power charging coil is greater than a number of windings included in the wireless communication coil.

10. The chargeable communication module according to claim 1 , wherein the wireless communication coil is disposed on the magnetic sheet.

11. The chargeable communication module according to claim 1 , wherein the wireless communication coil is disposed on another magnetic sheet different from the magnetic sheet.

12. The chargeable communication module according to claim 1 , wherein the wireless power charging coil includes a wound conductive wire.

13. The chargeable communication module according to claim 1 , wherein the wireless communication coil includes a conductive wiring pattern formed on a substrate.

14. The chargeable communication module according to claim 1 , wherein at least a part of the wireless communication coil is disposed outside of the magnetic sheet.

15. The chargeable communication module according to claim 1 , wherein the wireless communication coil is configured to perform communication by electromagnetic induction.

Assignees

• Panasonic Corp

Inventors

• Hirobe Takanori
• Uejima Hiroyuki
• Koyanagi Yoshio

Classifications

• 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

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J50/80

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

• H01Q1/243

  with built-in antennas · CPC title

• H01Q7/00

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title