WIRELESS CHARGING APPARATUS AND PORTABLE TERMINAL INCLUDING THE SAME

• US 20140002017A1
• Filed: 06/28/2013
• Published: 01/02/2014
• Est. Priority Date: 06/28/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Ki-Hyun, KO, Kil-Soo, PARK, Sung-Kweon
• Granted Patent: US 9,614,390 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• 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 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.

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 2, wherein the heat dispersion member comprises:

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

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

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

5. The wireless charging apparatus of claim 3, 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.

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

7. The wireless charging apparatus of claim 5, 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.

8. A portable terminal comprising:

a wireless charging module provided in a body of the portable terminal to be wirelessly charged by an external charging pad; and

a dispersion module provided in the wireless charging module to disperse heat generated by the wireless charging module during charging.

9. The portable terminal of claim 8, wherein the wireless charging module is mounted on a bracket to which a Near Field Communication (NFC) module is mounted, and the wireless charging module comprises:

a charging resonance module provided along the NFC module to transmit and receive signals to and from the charging pad;

a driving circuit unit mounted on one side of the bracket and connected to the charging resonance unit; and

a shield member mounted to a rear surface of the charging resonance unit.

10. The portable terminal of claim 9, wherein the dispersion module comprises:

a heat emission plate located on an upper end of the driving circuit unit to receive heat generated by the driving circuit unit and to disperse the heat; and

a heat dispersion member disposed on a lower end of the driving circuit unit, and connected to the heat emission plate and extending to a lower end surface of the shield member to disperse heat.

11. The portable terminal of claim 10, wherein the heat dispersion member is integrally mounted to a driving circuit unit rear surface and a shield member rear surface to disperse the heat transferred through the heat emission plate along a lower end surface of the shield member.

12. The portable terminal of claim 11, wherein the heat dispersion member comprises:

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

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

a plurality of connection passages connecting the first dispersion sheet and the second dispersion sheet to transfer the heat transferred to the first dispersion sheet to the second dispersion sheet.

13. The portable terminal of claim 12, wherein the first dispersion sheet, the plurality of connection passages, and the second dispersion sheet are integrally formed.

14. The portable terminal of claim 13, wherein when the portable terminal is positioned on an external charging pad to be wirelessly charged, the heat generated by the driving circuit unit is primarily 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 transferred to the second dispersion sheet through the plurality of connection passages, and is dispersed through the first dispersion sheet, the plurality of connection passages, and the second dispersion sheet.

15. The portable terminal of claim 13, wherein the heat dispersion member is formed of a copper material.