Chassis design for wireless-charging coil integration for computing systems

• US 10,003,218 B2
• Filed: 12/20/2014
• Issued: 06/19/2018
• Est. Priority Date: 12/20/2014
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Yang, Songnan, Narayan, Janardhan, Rosenfeld, Jonathan, Stevens, Kerry, Chewning, Patrick
• Primary Examiner(s): Sinclair, David M
• Assistant Examiner(s): BROWN, ROBERT D
• Application Number:
  US14/578,422
• Publication Number:
  US 20160204656A1
• Time in Patent Office: 1,277 Days
• CPC Class Codes: G06F 1/1613 for portable computers cooling arrangements therefor G06F1/203; constructional details or arrangements for pocket calculators, electronic agendas or books G06F15/0216; constructional details of portable telephone sets: with several bodies H04M1/0202
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1635 Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter
• CPC Class Codes: G06F 1/1656 Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203
• CPC Class Codes: G06F 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/361 made of combinations of electrically conductive material and ferromagnetic material
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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

This disclosure pertains to wireless power transfer systems, and in particular (but not exclusively), to techniques to improve the coupling efficiency between a power transmitting unit and a power receiving unit within a computing device. The present disclosure includes a system which comprises a computing unit which includes a power receiving unit and a conductive surface. The conductive surface has an opening that is adjacent to the power receiving unit and a slot extending from the opening towards the perimeter of the conductive surface. The computing unit further includes a system base coupled to the power receiving unit wherein the power receiving unit is to provide power to the system base. The system also includes a power transmitting unit adjacent to the computing unit.

Claims

1. An apparatus, comprising:

a computing unit, comprising;

a power receiving unit;

a conductive surface having an opening that is adjacent to the power receiving unit and a cavity extending from the opening towards a perimeter of the conductive surface, the conductive surface having a plurality of grounding point screws located away from the cavity to retain electrostatic discharge and electromagnetic interface shielding of a chassis; and

a system base coupled to the power receiving unit wherein the power receiving unit is to provide power to the system base,

wherein the conductive surface and the system base are produced by a co-molding process such that a side of the conductive surface nearest to the cavity does not have ground between the system base and system ground.

2. The apparatus of claim 1, wherein the power receiving unit includes a magnetic coil.

3. The apparatus of claim 1, wherein the opening of the conductive surface has at least one of a circular, square, or rectangular shape.

4. The apparatus of claim 1, wherein the computing unit comprises a non-conductive bottom cover which is adjacent to the conductive surface.

5. The apparatus of claim 1, wherein the system base includes at least one input device.

6. The apparatus of claim 1, wherein the apparatus is an ultrabook computer.

7. The apparatus of claim 1, wherein the conductive surface includes a conductive sheet.

9. The computing device of claim 7, wherein the power receiving unit is adjustable to change a size of an internal area.

10. The computing device of claim 9, wherein the conductive sheet comprises aluminum.

11. The computing device of claim 9, wherein the length and width of the opening are on an order of millimeters.

12. The computing device of claim 9, wherein the electromagnetic shield includes ferrite.

13. The computing device of claim 9, wherein the system base includes at least one of a keyboard, touchpad, Ethernet port, display port, microphone-in jack, speaker line-out jack, or battery.

14. The computing device of claim 9, wherein the power receiving unit includes a magnetic coil.

15. The computing device of claim 14, wherein the magnetic coil is disposed around the perimeter of the opening in a rectangular shape.

16. The computing device of claim 14, wherein the conductive sheet is adjustable to change a size of an internal area of the opening.

8. A computing device, comprising:

a non-conductive bottom cover;

a conductive sheet, having an opening, adjacent to the non-conductive bottom cover and

the conductive sheet having a slot extending from the opening towards a perimeter of the conductive sheet,

wherein a conductive surface has a plurality of grounding point screws located away from a cavity to retain electrostatic discharge and electromagnetic interface shielding of a chassis;

a power receiving unit adjacent to the conductive sheet and disposed around the perimeter of the opening;

an electromagnetic shield adjacent to the power receiving unit and covering the opening of the conductive sheet; and

a system base adjacent to the electromagnetic shield;

wherein the conductive surface and the system base are produced by a co-molding process such that a side of the conductive surface nearest to the slot does not have ground between the system base and system ground.

17. A system, comprising:

a computing unit, comprising;

a power receiving unit;

a conductive surface having an opening that is adjacent to the power receiving unit and a cavity extending from the opening towards a perimeter of the conductive surface, the conductive surface having a plurality of grounding point screws located away from the cavity to retain electrostatic discharge and electromagnetic interface shielding of a chassis; and

a system base coupled to the power receiving unit wherein the power receiving unit is to provide power to the system base;

wherein the conductive surface and the system base are produced by a co-molding process such that a side of the conductive surface nearest to the cavity does not have ground between the system base and system ground; and

a power transmitting unit adjacent to the computing unit.

18. The system of claim 17, wherein the power transmitting unit includes a power charging station.

19. The system of claim 17, wherein the computing unit is at least one of a smartphone device, computing tablet, notebook computer, sub-notebook computer, ultraportable notebook computer, mini-notebook computer, netbook computer, ultrabook computer, or laptop computer.

20. The system of claim 17 further comprising a faraday cage on an exterior of the system base.