Electronic device including non-contact charging module and battery

• US 9,991,735 B1
• Filed: 02/01/2018
• Issued: 06/05/2018
• Est. Priority Date: 02/17/2012
• Status: Active Grant

• Current Assignee: Sovereign Peak Ventures, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Yamaguchi, Shuichiro, Tabata, Kenichiro, Fujimura, Munenori, Hidaka, Akio, Naruse, Takumi
• Primary Examiner(s): Whitmore, Stacy
• Application Number:
  US15/886,674
• Publication Number:
  US 20180159358A1
• Time in Patent Office: 124 Days
• Field of Search: 320107-107
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 7/06 with core of ferromagnetic material H01Q7/02 takes precedence
• 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 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A mobile terminal is provided, which includes a wireless charging module, a battery pack, and a circuit board substrate. The wireless charging module includes a charging coil formed of a wound conducting wire and a communication coil placed adjacent to the charging coil. The wireless charging module has a substantially planar shape. The battery pack has a substantially planar shape and is configured to store power from the wireless charging module. The circuit board substrate is configured to control operation of the mobile terminal. The wireless charging module overlaps with each of the circuit board substrate and the battery pack.

Claims

1. An electronic device having a communication capability, the electronic device comprising:

a housing having a generally rectangular shape in a plan view of the housing;

a non-contact charging module included in the housing and including;

(i) a wireless charging coil having a substantially planar shape and formed of a wound electrical wire, and (ii) a magnetic sheet that overlaps with the wireless charging coil in the plan view of the housing;

a display arranged closer to the magnetic sheet than to the wireless charging coil of the non-contact charging module;

a battery included in the housing and having a substantially planar shape that overlaps with the wireless charging coil of the non-contact charging module in the plan view of the housing, the battery being configured to receive power from the wireless charging coil of the non-contact charging module;

a circuit board included in the housing and arranged to not overlap with the battery in the plan view of the housing; and

a Near Field Communication (NFC) antenna included in the housing and including an NFC coil formed of a wound electrical wire,

wherein a first axis of the wireless charging coil is different from a second axis of the NFC coil.

2. The electronic device according to claim 1, wherein the wireless charging coil is formed in an oval shape or a circular shape.

3. The electronic device according to claim 1, wherein the wireless charging coil is formed to define a hollow portion surrounded by the wound electrical wire.

4. The electronic device according to claim 3, wherein the hollow portion has an oval shape or a circular shape.

5. The electronic device according to claim 3, wherein the largest span of the hollow portion is greater than 15.5 mm.

6. The electronic device according to claim 5, wherein the hollow portion has a circular shape and a diameter of the circular-shape hollow portion is greater than 15.5 mm.

7. The electronic device according to claim 1, wherein a combined thickness of the wireless charging coil and the magnetic sheet is between 0.6 mm and 1.0 mm.

8. The electronic device according to claim 1, further comprising a second magnetic sheet for the NFC coil.