Method and apparatus for wireless charging

• US 10,326,298 B2
• Filed: 03/10/2016
• Issued: 06/18/2019
• Est. Priority Date: 03/10/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Wooram, Park, Seho, Kim, Kihyun, Kim, Jihye, Noh, Yunjeong, Sun, Kumjong, Ha, Mincheol, Hwangbo, Sangmoo
• Primary Examiner(s): Siek, Vuthe
• Application Number:
  US15/066,589
• Publication Number:
  US 20160268833A1
• Time in Patent Office: 1,195 Days
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current

Abstract

An electronic device and a method thereof, which supports fast wireless charging, are provided. The electronic device includes a wireless power circuit, and one or more processors which are functionally connected with the wireless power circuit, wherein the one or more processors are configured to execute detecting an external electronic device through the wireless power circuit, determining wireless power information corresponding to the external electronic device, determining whether the external electronic device supports a first charging power or a second charging power, at least partially based on the wireless power information, providing the first charging power to the external electronic device through the wireless power circuit, at least partially based on the determination that the external electronic device supports the first charging power, and providing the second charging power to the external electronic device through the wireless power circuit, at least partially based on the determination that the external electronic device supports the second charging power.

Claims

1. A wireless power supply device comprising:

a wireless charging circuit; and

one or more processors operatively connected with the wireless charging circuit,

wherein the one or more processors are configured to;

receive, from a wireless power reception device, a first signal to request wireless charging information related to the wireless power supply device using the wireless charging circuit,

in response to the receiving of the first signal, transmit, through the wireless charging circuit to the wireless power reception device, information indicating at least one charging voltage that is supportable by the wireless power supply device, as at least part of the wireless charging information,

receive, from the wireless power reception device, a second signal including information indicating a first charging voltage of the at least one charging voltage using the wireless charging circuit, and

based at least in part on the receiving of the second signal, provide, to the wireless power reception device, the first charging voltage through the wireless charging circuit,

wherein the one or more processors are further configured to;

perform the receiving of the first signal while providing another power corresponding to a second charging voltage through the wireless charging circuit, and

as at least part of the providing of the first charging voltage, change a charging voltage to be provided with respect to the wireless power reception device from the second charging voltage to the first charging voltage, and wherein the first charging voltage is greater than the second charging voltage.

2. The wireless power supply device of claim 1, further comprising:

a wired connector to connect with a power supply device,

wherein the one or more processors are further configured to;

in response to the receiving of the second signal, transmit, to the power supply device, a third signal to request a third charging voltage via the wired connector, the third charging voltage determined at least in part on the first charging voltage,

receive, from the power supply device, a power corresponding to the third charging voltage via the wired connector, and

perform the providing of the first charging voltage based at least in part on the third charging voltage.

3. The wireless power supply device of claim 2, wherein the third charging voltage is determined as substantially identical or similar to the first charging voltage.

4. The wireless power supply device of claim 1, wherein the one or more processors are further configured to:

provide the other power to the wireless power reception device, based at least in part on detecting a presence of the wireless power reception device.

5. The wireless power supply device of claim 1, wherein the one or more processors are further configured to:

receive, from the wireless power reception device, a fourth signal to request the second charging voltage while providing the first charging voltage to the wireless power reception device, and

based at least in part on the receiving of the fourth signal, provide the second charging voltage to the wireless power reception device, the providing of the second charging voltage including changing a charging voltage to be provided with respect to the wireless power reception device from the second charging voltage to the first charging voltage.

6. The wireless power supply device of claim 5,

further comprising a wired connector to connect with a power supply device,

wherein the one or more processors are further configured to:

transmit, to the power supply device, a signal to request a fourth charging voltage via wired connector, the fourth charging voltage determined at least in part on the second charging voltage,

receive, from the power supply device, a power corresponding to the fourth charging voltage via the wired connector, and

perform the providing of the second charging voltage based at least in part on the fourth charging voltage.

7. A wireless power reception device comprising:

a battery;

a wireless charging circuit; and

one or more processors operatively connected with the wireless charging circuit,

wherein the one or more processors are configured to;

transmit, to a wireless power supply device, a first signal to request wireless charging information with respect to the wireless power supply device using the wireless charging circuit,

receive, from the wireless power supply device, information indicating at least one charging voltage that is supportable by the wireless power supply device using the wireless charging circuit,

transmit, to the wireless power supply device, a second signal including information indicating a first charging voltage of the at least one charging voltage, based at least in part on the received information,

after the transmitting of the second signal, receive, from the wireless power supply device, a power corresponding to the first charging voltage using the wireless charging circuit,

charge the battery based on the received power,

wherein the one or more processors are further configured to;

based at least in part on a presence of the wireless power supply device, receive, from the wireless power supply device, another power corresponding to a second charging voltage, and

initiate a battery charging operation using the second charging voltage before transmitting the first signal, and wherein the first charging voltage is greater than the second charging voltage.

8. The wireless power reception device of claim 7,

wherein the one or more processors are further configured to change, based on the received information, a charging mode from a second charging mode to a first charging mode,

wherein the first charging mode corresponds to the first charging voltage, and

wherein the second charging mode corresponds to the second charging voltage different from the first charging voltage.

9. The wireless power reception device of claim 7, wherein the one or more processors are further configured to:

transmit, to the wireless power supply device, the signal requesting the first charging voltage while receiving the other power from the wireless power supply device.

10. The wireless power reception device of claim 7, wherein the one or more processors are further configured to:

transmit, to the wireless power supply device, a third signal to request the second charging voltage at least temporarily while receiving the power corresponding to the first charging voltage from the wireless power supply device,

receive, from the wireless power supply device, the other power corresponding to the second charging voltage, and

charge the battery based on the received other power corresponding to the second charging voltage.

11. A method for operating a wireless power supply device, method comprising:

receiving, from a wireless power reception device, a first signal to request wireless charging information related to the wireless power supply device using a wireless charging circuit;

in response to the receiving of the first signal, transmitting, through the wireless charging circuit to the wireless power reception device, information indicating at least one charging voltage that is supportable by the wireless power supply device, as at least part of the wireless charging information;

receiving, from the wireless power reception device, a second signal including information indicating a first charging voltage of the at least one charging voltage using the wireless charging circuit;

based at least in part on the receiving of the second signal, providing, to the wireless power reception device, the first charging voltage through the wireless charging circuit;

wherein the first signal is received while providing another power corresponding to a second charging voltage through the wireless charging circuit,

wherein the providing of the first charging voltage comprises changing a charging voltage to be provided with respect to the wireless power reception device from the second charging voltage to the first charging voltage, and

wherein the first charging voltage is greater than the second charging voltage.

12. The method of claim 11, further comprising:

in response to the receiving of the second signal, transmitting, to a power supply device which is connected to the wireless power supply device via a wired connector, a third signal to request a third charging voltage via the wired connector, the third charging voltage determined at least in part on the first charging voltage;

receiving, from the power supply device, a power corresponding to the third charging voltage via the wired connector; and

performing the providing of the first charging voltage based at least in part on the third charging voltage.

13. The method of claim 12, wherein the third charging voltage is determined as substantially identical or similar to the first charging voltage.

14. The method of claim 11, further comprising:

providing the other power to the wireless power reception device, based at least in part on detecting a presence of the wireless power reception device.

15. The method of claim 11, further comprising:

receiving, from the wireless power reception device, a fourth signal to request the second charging voltage while providing the first charging voltage to the wireless power reception device; and

based at least in part on the receiving of the fourth signal, providing the second charging voltage to the wireless power reception device, the providing of the second charging voltage including changing a charging voltage to be provided with respect to the wireless power reception device from the second charging voltage to the first charging voltage.

16. The method of claim 15, wherein the providing of the second charging voltage comprises:

transmitting, to a power supply device which is connected to the wireless power supply device via a wired connector, a signal to request a fourth charging voltage via the wired connector, the fourth charging voltage determined at least in part on the second charging voltage;

receiving, from the power supply device, a power corresponding to the fourth charging voltage via the wired connector; and

performing the providing of the second charging voltage based at least in part on the fourth charging voltage.

17. A method for operating a wireless power reception device, the method comprising:

transmitting, to a wireless power supply device, a first signal to request wireless charging information with respect to the wireless power supply device using a wireless charging circuit;

receiving, from the wireless power supply device, information indicating at least one charging voltage that is supportable by the wireless power supply device using the wireless charging circuit;

transmitting, to the wireless power supply device, a second signal including information indicating a first charging voltage of the at least one charging voltage, based at least in part on the received information;

after the transmitting of the second signal, receiving, from the wireless power supply device, a power corresponding to the first charging voltage using the wireless charging circuit; and

charging a battery based on the received power;

wherein the method further comprises;

based at least in part on a presence of the wireless power supply device, receiving, from the wireless power supply device, another power corresponding to a second charging voltage, and

initiating a battery charging operation using the second charging voltage before transmitting the first signal, and

wherein the first charging voltage is greater than the second charging voltage.

18. The method of claim 17, further comprising:

changing, based on the received information, a charging mode from a second charging mode to a first charging mode,

wherein the first charging mode corresponds to the first charging voltage, and

wherein the second charging mode corresponds to the second charging voltage different from the first charging voltage.

19. The method of claim 17, further comprising:

transmitting, to the wireless power supply device, the signal requesting the first charging voltage while receiving the other power from the wireless power supply device.

20. The method of claim 17, further comprising:

transmitting, to the wireless power supply device, a third signal to request the second charging voltage at least temporarily while receiving the power corresponding to the first charging voltage from the wireless power supply device;

receiving, from the wireless power supply device, the other power corresponding to the second charging voltage; and

charging the battery based on the received other power corresponding to the second charging voltage.

21. A wireless power supply device comprising:

a wireless charging circuit comprising a wireless charging coil; and

one or more processors operatively connected with the wireless charging circuit,

wherein the one or more processors are configured to;

generate a first power to wirelessly charge a wireless power reception device by providing a first charging voltage to the wireless charging coil,

transmit, through the wireless charging circuit, to the wireless power reception device, information indicating a second charging voltage that is supportable by the wireless power supply device,

after the transmitting of the information, receive, from the wireless power reception device, a power change request signal through the wireless charging circuit, and

in response to receiving the power change request signal, generate a second power to wirelessly charge the wireless power reception device by providing the second charging voltage to the wireless charging coil, and

wherein the second charging voltage is greater than the first charging voltage.

22. The wireless power supply device of claim 21, wherein the power change request signal comprises information on the second charging voltage.

23. The wireless power supply device of claim 21, wherein the power change request signal comprises information requesting a change of charging voltage.

24. The wireless power supply device of claim 21, wherein the one or more processors are further configured to:

in response to receiving the power change request signal, transmit, to a power supply device, a signal requesting a change of a provision power,

receive, from the power supply device, a changed power related to the signal, and

provide, to the wireless charging circuit, the second charging voltage based at least in part on the changed power.

25. A wireless power reception device comprising:

a battery;

a wireless charging circuit comprising a wireless charging coil; and

one or more processors operatively connected with the wireless charging circuit,

wherein the one or more processors are configured to;

obtain, based on a first power received from a wireless power supply device through the wireless charging coil, a first charging voltage to charge the battery,

receive, through the wireless charging circuit from the wireless power supply device, information indicating a second charging voltage that is supportable by the wireless power supply device,

after the receiving of the information, transmit, through the wireless charging circuit to the wireless power supply device, a power change request signal, and

after the transmitting of the power change request signal, obtain, based on a second power received from the wireless power supply device through the wireless charging coil, the second charging voltage to charge the battery, and

wherein the second charging voltage is greater than the first charging voltage.

26. The wireless power reception device of claim 25, wherein the power change request signal comprises information on the second charging voltage.

27. The wireless power reception device of claim 25, wherein the power change request signal comprises information requesting a change of charging voltage.

28. The wireless power reception device of claim 25,

wherein the one or more processors are further configured to, after the transmitting of the power change request signal, change a charging mode from a first power mode to a second power mode,

wherein the first power mode corresponds to the first charging voltage, and

wherein the second power mode corresponds to the second charging voltage different from the first charging voltage.