NON-CONTACT CHARGING MODULE AND PORTABLE TERMINAL PROVIDED WITH SAME

• US 20140306656A1
• Filed: 12/04/2012
• Published: 10/16/2014
• Est. Priority Date: 12/07/2011
• Status: Abandoned Application

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Tabata, Kenichiro, Yamaguchi, Shuichiro, Fujimura, Munenori, Hidaka, Akio, Naruse, Takumi
• Application Number:
  US14/359,564
• Publication Number:
  US 20140306656A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01F 2003/103 Magnetic circuits with permanent magnets
• CPC Class Codes: H01F 27/2871 Pancake coils
• CPC Class Codes: H01F 3/10 Composite arrangements of magnetic circuits
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• 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 50/12 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Provided is a non-contact charging module for which miniaturization is achieved by making a non-contact charging coil, an NFC antenna, and a magnetic sheet into one module, and which enables transmission and power propagation in the same direction. This device of the present invention is provided with a charging coil comprising a wound lead wire, an NFC coil disposed so as to surround the charging coil, and a magnetic sheet that holds the charging coil and the NFC coil from the same direction. The number of turns of the charging coil is greater than that of the NFC coil.

Claims

1. A non-contact charging module comprising:

a charging coil that comprises;

a coil portion formed of a wound conducting wire; and

two leg portions that extend from both ends of the conducting wire corresponding to a winding start point and a winding end point of the coil portion, respectively,

an NFC coil that is disposed so as to surround the charging coil;

a magnetic sheet that supports the charging coil and the NFC coil from a same direction; and

a slit that is formed in the magnetic sheet, wherein

at least a part of each of the two leg portions of the charging coil is housed in the slit, wherein

the part of each of the two leg portions housed in the slit includes a part that overlaps with the NFC coil.

2. The non-contact charging module according to claim 1,

wherein the magnetic sheet comprises:

a first magnetic sheet that supports the charging coil; and

a second magnetic sheet that is located above the first magnetic sheet and that supports the NFC coil, wherein;

the slit is formed in the first magnetic sheet; and

the charging coil includes both ends that are housed under second magnetic sheet.

3. The non-contact charging module according to claim 1, wherein:

the NFC coil and the charging coil are rectangular; and

the slit is orthogonal to a linear portion of the NFC coil and the charging coil.

4. The non-contact charging module according to claim 1, wherein the NFC coil comprises a corner portion, wherein

the NFC coil and the charging coil are most distant from each other at the corner portion of the NFC coil.

5. The non-contact charging module according to claim 4, wherein:

the NFC coil and the charging coil are rectangular; and

the charging coil comprises a corner portion that is formed a curved shape.

6. The non-contact charging module according to claim 4, wherein the NFC coil is rectangular, and the charging coil is circular.

7. A portable terminal comprising a non-contact charging module according to claim 1.

8-12. -12. (canceled)