WIRELESS CHARGING APPARATUS

• US 20160181850A1
• Filed: 12/22/2014
• Published: 06/23/2016
• Est. Priority Date: 12/22/2014
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Koskinen, Pasi, Toivola, Timo
• Application Number:
  US14/579,003
• Publication Number:
  US 20160181850A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/00 Circuit arrangements or systems for wireless supply or distribution of electric power
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless charging apparatus comprises a power interface for receiving a charging voltage from an external power source capable of providing varying voltages; a control interface for communicating with the external power source; a charging element for wirelessly charging a remote device; and a controller for controlling transmitted power provided by the charging element. The controller is configured to request a charging voltage via the control interface from the external power source; and control the power level transmitted by the charging element by controlling the charging voltage requested from the external power source.

Claims

1. A wireless charging apparatus comprising:

a power interface for receiving a charging voltage from an external power source capable of providing varying voltages via a wired connection;

a control interface for communicating with the external power source;

a charging element for wirelessly charging a remote device;

a controller for controlling transmitted power provided by the charging element;

wherein the controller is configured to;

request a charging voltage via the control interface from the external power source; and

control the power level transmitted by the charging element by controlling the charging voltage requested from the external power source.

2. A wireless charging apparatus according to claim 1, comprising a port providing the power interface and the control interface.

3. A wireless charging apparatus according to claim 2, wherein the port is a universal serial bus type C connector port.

4. A wireless charging apparatus according to claim 3, wherein the controller is configured to request the charging voltage from the external power source according to power delivery specifications.

5. A wireless charging apparatus according to claim 1, wherein the controller is configured to:

receive a signal from the remote device to increase or decrease power provided by the charging element; and

request a new charging voltage via the control interface from the external power source.

6. A wireless charging apparatus according to claim 1, wherein the controller is configured to:

control pulse width of an input voltage supplied to the charging element.

7. A wireless charging apparatus according to claim 1, wherein the charging element comprises an induction coil or a resonance coil.

8. A wireless charging apparatus according to claim 1, wherein the controller is configured to request the charging voltage via the control interface from the external power source by using 50 mV steps.

9. A wireless charging apparatus comprising:

a universal serial bus type C connector port for receiving a charging voltage from an external power source capable of providing varying voltages via a wired connection and for providing a control interface for communicating with the external power source;

a charging element for wirelessly charging a remote device;

a controller for controlling transmitted power provided by the charging element;

wherein the controller is configured to;

request a charging voltage via the universal serial bus type C connector port from the external power source; and

control the power level transmitted by the charging element by controlling the charging voltage requested from the external power source.

10. A wireless charging apparatus according to claim 9, wherein the controller is configured to:

receive a signal from the remote device to increase or decrease power provided by the charging element; and

request a new charging voltage via the control interface from the external power source.

11. A wireless charging apparatus according to claim 9, wherein the controller is configured to:

control pulse width of an input voltage supplied to the charging element.

12. A wireless charging apparatus according to claim 9, wherein the controller is configured to request the charging voltage from the external power source according to power delivery specifications.

13. A wireless charging apparatus according to claim 9, wherein the charging element comprises an induction coil or a resonance coil.

14. A wireless charging apparatus according to claim 9, wherein the controller is configured to request the charging voltage via the universal serial bus type C port from the external power source by using 50 mV steps.

15. A wireless charging apparatus comprising:

a universal serial bus cable comprising a type C connector for connecting the wireless charging apparatus to an external power source capable of providing varying voltage via a wired connection;

a charging element for wirelessly charging a remote device;

a controller for controlling transmitted power provided by the charging element;

wherein the controller is configured to;

request a charging voltage via the universal serial bus type C cable from the external power source; and

control the power level transmitted by the charging element by controlling the charging voltage requested from the external power source.

16. A wireless charging apparatus according to claim 15, wherein the controller is configured to:

receive a signal from the remote device to increase or decrease power provided by the charging element;

request a new charging voltage via the control interface from the external power source.

17. A wireless charging apparatus according to claim 15, wherein the controller is configured to:

control pulse width of an input voltage supplied to the charging element.

18. A wireless charging apparatus according to claim 15, wherein the controller is configured to request the charging voltage from the external power source according to power delivery specifications.

19. A wireless charging apparatus according to claim 15, wherein the charging element comprises an induction coil or a resonance coil.

20. A wireless charging apparatus according to claim 15, wherein the controller is configured to request the charging voltage via the universal serial bus type C cable from the external power source by using 50 mV steps.