Wireless charging apparatus and portable terminal including the same

• US 9,614,390 B2
• Filed: 06/28/2013
• Issued: 04/04/2017
• Est. Priority Date: 06/28/2012
• Status: Expired

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Ki-Hyun, Ko, Kil-Soo, Park, Sung-Kweon
• Primary Examiner(s): Dinh, Paul
• Application Number:
  US13/931,100
• Publication Number:
  US 20140002017A1
• Time in Patent Office: 1,376 Days
• Field of Search: 320107-108, 320134, 320144, 320153
• 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 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A wireless charging apparatus provided in an electronic device is provided. The wireless charging apparatus includes a charging resonance unit for wireless charging; a driving circuit unit to which the charging resonance unit is connected and to which an internal circuitry is mounted; a shield member mounted to a rear surface of the charging resonance unit; and a heat dispersion member mounted to the driving circuit unit and the shield member to disperse heat generated by the driving circuit unit.

Claims

1. A wireless charging apparatus provided in an electronic device, the wireless charging apparatus comprising:

a charging unit for wireless charging;

a driving circuit unit to which the charging unit is connected and to which an internal circuitry is mounted;

a shield member mounted to a rear surface of the charging unit; and

a heat dispersion member, mounted to at least one of a rear surface of the driving circuit unit and a rear surface of the shield member, to disperse heat generated by the driving circuit unit,

wherein the heat dispersion member comprises;

a first dispersion sheet mounted to the rear surface of the driving circuit unit and connected to the heat emission plate so that the heat of the heat emission plate is transferred to the first dispersion sheet;

a second dispersion sheet mounted to the rear surface of the shield member; and

a plurality of connection passages connecting the first dispersion sheet and the second dispersion sheet.

2. The wireless charging apparatus of claim 1, wherein a heat emission plate for covering the driving circuit unit and dispersing the heat generated by the driving circuit unit is located on an upper surface of the driving circuit unit.

3. The wireless charging apparatus of claim 1, wherein the first dispersion sheet, the plurality of connection passages, and the second dispersion sheet are integrally formed.

4. The wireless charging apparatus of claim 1, wherein the heat emission plate is connected to the first dispersion sheet along a periphery of an upper surface of the first dispersion sheet so that the heat dispersed to the heat emission plate is transferred to the first dispersion sheet.

5. The wireless charging apparatus of claim 4, wherein the heat dispersion member is formed of a copper material.

6. The wireless charging apparatus of claim 4, wherein during wireless charging, the heat generated by the driving circuit unit is dispersed through the heat emission plate and is dispersed to the first dispersion sheet connected to the heat emission plate, and the heat transferred to the first dispersion sheet is dispersed to the second dispersion sheet through the plurality of connection passages.