Wireless Chargeable Device, an Apparatus for Controlling Wireless Charging of a Wireless Chargeable Device and Method for Controlling Wireless Charging of a Wireless Chargeable Device

• US 20170288448A1
• Filed: 02/21/2017
• Published: 10/05/2017
• Est. Priority Date: 04/01/2016
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Kranz, Christian, Hammes, Markus, Schultz, Christoph
• Granted Patent: US 11,177,679 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

The present disclosure relates to a wireless-chargeable device and an apparatus for controlling a magnetic field strength of a magnetic field generated by an electromagnet. The wireless-chargeable device includes an electromagnet (102) and a control circuit (104). The control circuit (104) is configured to control a magnetic field strength generated by an electro-magnet for alignment of a power-receiving coil (106) of the wireless-chargeable device with respect to a power-transmitting coil of a wireless power supply device.

Claims

1. A wireless-chargeable device comprising:

An electromagnet; and

A control circuit configured to control a magnetic field strength generated by the electromagnet for alignment of a power-receiving coil of the wireless-chargeable device with respect to a power-transmitting coil of a wireless power supply device.

2. The wireless-chargeable device according to claim 1, wherein the control circuit is configured to detect a presence of the wireless power supply device in proximity of the wireless-chargeable device, and wherein the control circuit is configured to control the magnetic field strength based on the detected presence.

3. The wireless-chargeable device according to claim 2, wherein the control circuit is configured to increase the magnetic field strength or to activate the electromagnet based on the detected presence.

4. The wireless-chargeable device according to claim 1, wherein the control circuit is configured to determine information related to a power transmission between the wireless power supply device and the wireless-chargeable device, and wherein the control circuit is configured to control the magnetic field strength based on the information related to the power transmission.

5. The wireless-chargeable device according to claim 4, wherein the control circuit is configured to monitor the power transmission between the wireless power supply device and the wireless-chargeable device to obtain the information related to the power transmission.

6. The wireless-chargeable device according to claim 4, wherein the control circuit is configured to determine a quality of the power transmission based on the information related to the power transmission, and wherein the control circuit is configured to control the magnetic field strength based on the quality of the power transmission.

7. The wireless-chargeable device according to claim 6, wherein the control circuit is configured to increase the magnetic field strength or to activate the electromagnet if the quality of the power transmission is below a lower threshold.

8. The wireless-chargeable device according to claim 6, wherein the control circuit is configured to decrease the magnetic field strength or to deactivate the electromagnet if the quality of the power transmission is above an upper threshold.

9. The wireless-chargeable device according to claim 4, wherein the control circuit is configured to detect a state of the power transmission based on the information related to the power transmission, and wherein the control circuit is configured to control the magnetic field strength based on the state of the power transmission.

10. The wireless-chargeable device according to claim 9, wherein the control circuit is configured to decrease the magnetic field strength, to deactivate the electromagnet or to control the magnetic field strength to emit an inverted field to repel the wireless power supply device if the state of the power transmission indicates that the power transmission has stopped.

11. The wireless-chargeable device according to claim 9, wherein the control circuit is configured to control the magnetic field strength to decrease the magnetic field strength or to deactivate the electromagnet if the state of the power transmission indicates that the power transmission has been initialized.

12. The wireless-chargeable device according to claim 1, wherein the control circuit is further configured to determine a compatibility information of the wireless-chargeable device and the wireless power supply device, and wherein the control circuit is configured to control the magnetic field strength based on the determined compatibility of the wireless-chargeable device and the wireless power supply device.

13. The wireless-chargeable device according to claim 12, wherein the control circuit is configured to control the magnetic field strength to emit an inverted field to repel the wireless power supply device, if the determined compatibility information indicates that the wireless-chargeable device and the wireless power supply device are incompatible.

14. The wireless-chargeable device according to claim 1, wherein the control circuit is configured to provide an oscillating current for the electromagnet to generate a sound or vibration.

15. The wireless-chargeable device according to claim 14, wherein the control circuit is further configured to determine a compatibility information of the wireless-chargeable device and the wireless power supply device, wherein the control circuit is configured to provide the oscillating current, if the determined compatibility information indicates that the wireless-chargeable device and the wireless power supply device are incompatible.

16. The wireless-chargeable device according to claim 1, further comprising the power-receiving coil, wherein the power-receiving coil is configured to receive a power for charging the wireless chargeable device induced by an electro-magnetic field generated by the wireless power supply device.

17. The wireless-chargeable device according to claim 15, wherein the control circuit is configured to monitor at least one electrical parameter of the power-receiving coil, wherein the control circuit is configured to detect a presence of a wireless power supply device in a proximity of the wireless-chargeable device based on the at least one electrical parameter.

18. The wireless-chargeable device according to claim 17, wherein the least one electrical parameter of the power-receiving coil is one of the group of a voltage, a voltage change, a current, a current change, a resonance frequency and a change in a resonance frequency.

19. The wireless-chargeable device according to claim 17, wherein the control circuit is configured to control the magnetic field strength based on the detected presence.

20. The wireless-chargeable device according to claim 15, wherein a resonance frequency of the power-receiving coil is lower than a resonance frequency of the electromagnet.

21. An apparatus for controlling wireless charging of a wireless-chargeable device, wherein the apparatus comprises a control circuit configured to control a magnetic field strength generated by an electromagnet for alignment of a power-receiving coil of a wireless-chargeable device with respect to a power-transmitting coil of a wireless power supply device.

22. A method for controlling wireless charging of a wireless-chargeable device, wherein the method comprises controlling a magnetic field strength generated by an electromagnet for alignment of a power-receiving coil of a wireless-chargeable device with respect to a power-transmitting coil of a wireless power supply device.

23. A machine readable storage medium including program code, when executed, to cause a machine to perform the method of claim 22.