Wireless power charging device with rear side magneto isolation marking

• US 9,973,027 B2
• Filed: 09/01/2015
• Issued: 05/15/2018
• Est. Priority Date: 09/01/2015
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Sultenfuss, Andrew T., Kockan, Sinem
• Primary Examiner(s): Dinh, Paul
• Application Number:
  US14/842,797
• Publication Number:
  US 20170063136A1
• Time in Patent Office: 987 Days
• Field of Search: 320108
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of 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 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage

Abstract

An information handling system includes a wireless charging receiver, which in turn includes first and second surfaces, a receiver coil, and an isolation marker. The wireless charging receiver is coupled to a back side of the information handling system. The receiver coil is located within the wireless charging receiver and disposed between the first and second surfaces, and receives a magnetic flux field from a transmission coil of a wireless charging pad. The isolation marker is in physical communication with the first surface and aligned with the receiver coil. The isolation marker enables a user to align the receiver coil with the transmission coil of the charging pad, and isolates the magnetic flux field in the receiver coil and away from the user and other components of the information handling system.

Claims

1. An information handling system comprising:

a wireless charging module to control charging of a battery of the information handling system;

a receiver coil coupled to the wireless charging module, the receiver coil to receive a magnetic flux field from a transmission coil of a wireless charging pad; and

an isolation marker aligned with the receiver coil, the isolation marker to enable a user to align the receiver coil with the transmission coil of the charging pad, and to isolate the magnetic flux field in the receiver coil received from the transmission coil and away from the user and other components of the information handling system.

2. The information handling system of claim 1, further comprising:

a wireless power receiver to extend out of the information handling system.

3. The information handling system of claim 1, further comprising:

a magnetic shield located between the receiver coil and the isolation marker, the magnetic shield to isolate the magnetic flux field in the receiver coil.

4. The information handling system of claim 1, wherein the isolation marker includes instructions to identify how to properly align the receiver coil with the transmission coil.

5. The information handling system of claim 1, wherein the isolation marker includes a marker to identify a location of the receiver coil.

6. The information handling system of claim 5, wherein the receiver coil with the transmission coil are properly aligned when the marker of the isolation marker is aligned with a marker of the wireless charging pad.

7. The information handling system of claim 1, wherein the marker is located within the information handling system and not visible when the receiver coil is in a first position, and the marker is located outside of the information handling system and visible when the receiver coil is in a second position.

8. An information handling system comprising:

a wireless charging receiver coupled to a back side of the information handling system, the wireless charging receiver including;

first and second surfaces;

a receiver coil located within the wireless charging receiver and disposed between the first and second surfaces, the receiver coil to receive a magnetic flux field from a transmission coil of a wireless charging pad; and

an isolation marker in physical communication with the first surface and aligned with the receiver coil, the isolation marker to enable a user to align the receiver coil with the transmission coil of the charging pad, and to isolate the magnetic flux field in the receiver coil received from the transmission coil and away from the user and other components of the information handling system.

9. The information handling system of claim 8, the wireless power receiver to extend out of the information handling system.

10. The information handling system of claim 8, further comprising:

a magnetic shield located between the receiver coil and the isolation marker, the magnetic shield to isolate the magnetic flux field in the receiver coil.

11. The information handling system of claim 8, wherein the isolation marker includes instructions to identify how to properly align the receiver coil with the transmission coil.

12. The information handling system of claim 8, wherein the isolation marker includes a marker to identify a location of the receiver coil.

13. The information handling system of claim 12, wherein the receiver coil with the transmission coil are properly aligned when the marker of the isolation marker is aligned with a marker of the wireless charging pad.

14. The information handling system of claim 8, wherein the marker is located within the information handling system and not visible when the wireless power receiver is in a first position, and the marker is located outside of the information handling system and visible when the wireless power receiver is in a second position.

15. An information handling system comprising:

a wireless charging module to control charging of a battery of the information handling system; and

a wireless charging receiver coupled to a back side of the information handling system, the wireless charging receiver including;

first and second surfaces;

a receiver coil located within the wireless charging receiver and disposed between the first and second surfaces, and coupled to the wireless charging module, the receiver coil to receive a magnetic flux field from a transmission coil of a wireless charging pad; and

an isolation marker in physical communication with the first surface and aligned with the receiver coil, the isolation marker to enable a user to align the receiver coil with the transmission coil of the charging pad, and to isolate the magnetic flux field in the receiver coil received from the transmission coil and away from the user and other components of the information handling system.

16. The information handling system of claim 15, the wireless power receiver to extend out of the information handling system.

17. The information handling system of claim 15, further comprising:

a magnetic shield located between the receiver coil and the isolation marker, the magnetic shield to isolate the magnetic flux field in the receiver coil.

18. The information handling system of claim 15, wherein the isolation marker includes instructions to identify how to properly align the receiver coil with the transmission coil.

19. The information handling system of claim 15, wherein the isolation marker includes a marker to identify a location of the receiver coil.

20. The information handling system of claim 15, wherein the marker is located within the information handling system and not visible when the wireless power receiver is in a first position, and the marker is located outside of the information handling system and visible when the wireless power receiver is in a second position.