Apparatus, systems and methods for wireless charging for PC platforms and peripherals

• US 9,853,480 B2
• Filed: 12/08/2011
• Issued: 12/26/2017
• Est. Priority Date: 06/21/2011
• Status: Active Grant

• Current Assignee: Tahoe Research Limited (f/k/a Learndale Limited) (Vector Capital Corporation)
• Original Assignee: Intel Corporation
• Inventors: Matos, Gary N., Gallahan, Ronald W., Walsh, James J., Yang, Songnan, Cooper, Emily B.
• Primary Examiner(s): Siek, Vuthe
• Application Number:
  US13/992,766
• Publication Number:
  US 20150002086A1
• Time in Patent Office: 2,210 Days
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source

Abstract

Disclosed is a wireless charging device for charging electronic devices placed within proximity of the transmitter of the wireless charging device. The wireless charging device includes an inductive coupler, a reflected power detector, a power source and a power control system. The inductive coupler is configured to charge at least one electronic device present in the charging area. The inductive coupler takes power form the power source. The inductive coupler is also capable of communicating with electronic devices being charged to exchange a set of information. In addition to notebook PCs, this solution can be extended to desktop and tablet PCs, slates and office furniture as pervasive means of wireless charging multiple devices.

Claims

1. A wireless charging system including:

a power source;

a voltage regulator coupled to the power source;

a microcontroller coupled to the voltage regulator and to the power source;

a transmit analog circuit coupled to the microcontroller;

a power transmit coil coupled to the transmit analog circuit and controllable by the microcontroller to wirelessly transmit power to an electronic device in close proximity to the system, the coil to wireless transmit power using resonant inductive coupling; and

a non-volatile computer readable medium encoded with computer executable instructions, which when accessed, cause the wireless charging system to perform operations comprising;

causing a user interface to be displayed to a user;

processing an input from the user, the input having been received through the user interface and including wireless charging policies selectable by the user on the user interface prior to a wireless power transmission from the system to the electronic device; and

controlling the wireless power transmission based on the input.

2. The system of claim 1, wherein the input from the user includes a policy regarding stopping the wireless power transmission in response to a determination that a battery level of the system is at a predetermined level.

3. The system of claim 1, wherein the operations further comprise automatically stopping the wireless power transmission in response to a determination that a battery level of the system has reached a predetermined threshold.

4. The system of claim 1, wherein the input from the user includes a policy regarding whether the system is in an on or off charging state.

5. The system of claim 1, wherein the input from the user includes a policy regarding a charging status of the electronic device.

6. The system of claim 5, wherein the charging status includes at least one of whether the electronic device is in close proximity to the system and whether a wireless charging of the electronic device is complete.

7. The system from claim 1, wherein the input from the user includes a policy regarding a frequency for the system to search for electronic devices to be charged.

8. The system of claim 1, wherein the operations further include processing an input from the user to invoke the user interface.

9. The system of claim 1, wherein the input from the user includes policies regarding metering a performance of the system to maximize the wireless power transmission, the policies regarding metering a performance of the system to maximize the wireless power transmission including at least one of a policy regarding CPU processing power, a policy regarding power delivered to Optical Disk Drives, a policy regarding screen display brightness, a policy regarding CPU performance, a policy regarding a charging level of the electronic device and a policy regarding an identification of the electronic device.

10. The system of claim 9, wherein the operations further include storing metrics data elements on a performance of the system.

11. The system of claim 1, further including a display.

12. A method of operating a wireless charging system including:

using a power source;

using a voltage regulator coupled to the power source;

using a microcontroller coupled to the voltage regulator and to the power source;

using a transmit analog circuit coupled to the microcontroller;

using a power transmit coil coupled to the transmit analog circuit and controllable by the microcontroller to wirelessly transmit power to an electronic device in close proximity to the system, the coil to wireless transmit power using resonant inductive coupling; and

causing a user interface to be displayed to a user;

processing an input from the user, the input having been received through the user interface and including wireless charging policies selectable by the user on the user interface prior to a wireless power transmission from the system to the electronic device; and

controlling the wireless power transmission based on the input.

13. The method of claim 12, wherein the input from the user includes at least one of a policy regarding stopping the wireless power transmission in response to a determination that a battery level of the system is at a predetermined level, a policy regarding whether the system is in an on or off charging state, a policy regarding a charging status of the electronic device, and a policy regarding a frequency for the system to search for electronic devices to be charged.

14. The method of claim 12, further including automatically stopping the wireless power transmission in response to a determination that a battery level of the system has reached a predetermined threshold.

15. The method of claim 13, wherein the charging status includes at least one of whether the electronic device is in close proximity to the system and whether a wireless charging of the electronic device is complete.

16. The method of claim 12, further including processing an input from the user to invoke the user interface.

17. The method of claim 12, wherein the input from the user includes policies regarding metering a performance of the system to maximize the wireless power transmission, the policies regarding metering a performance of the system to maximize the wireless power transmission including at least one of a policy regarding CPU processing power, a policy regarding power delivered to Optical Disk Drives, a policy regarding screen display brightness, a policy regarding CPU performance, a policy regarding a charging level of the electronic device and a policy regarding an identification of the electronic device.

18. The method of claim 12, further including storing metrics data elements on a performance of the system.

19. The method of claim 12, further including displaying the user interface to the user.