METHOD FOR DETERMINING CROSS CONNECTION IN WIRELESS CHARGING

• US 20160049826A1
• Filed: 08/13/2015
• Published: 02/18/2016
• Est. Priority Date: 08/13/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Kyung-Woo, Jung, Hee-Won
• Granted Patent: US 10,574,080 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

A method and an apparatus are provided for determining a cross connection during wireless charging. The method includes receiving changed voltage setting information from a wireless power receiver, transmitting power adjusted according to the received voltage setting information, receiving measured voltage information from the wireless power receiver, and determining whether a cross connection occurs based on the voltage setting information and the measured voltage information.

Claims

1. A method for determining a cross connection during wireless charging, the method comprising:

receiving changed voltage setting information from a wireless power receiver;

transmitting power adjusted according to the received voltage setting information;

receiving measured voltage information from the wireless power receiver; and

determining whether a cross connection occurs based on the voltage setting information and the measured voltage information.

2. The method of claim 1, wherein the changed voltage setting information is included in a Power Receiving Unit (PRU) dynamic signal.

3. The method of claim 1, wherein transmitting the adjusted power and receiving the measured voltage information are repeated a set number of times, and

wherein determining whether the cross connection occurs based on the voltage setting information and the measured voltage information comprises determining that the cross connection occurs, if a cross connection condition is satisfied a preset number of times as a result of repeatedly transmitting the adjusted power and receiving the measured voltage information the set number of times.

4. The method of claim 1, wherein the changed voltage setting information comprises information indicating that a voltage is increased by a preset value from a current voltage indicated by current voltage setting information.

5. The method of claim 1, wherein the changed voltage setting information comprises information indicating that a voltage is decreased by a preset value from a current voltage indicated by current voltage setting information.

6. The method of claim 1, wherein determining whether the cross connection occurs comprises determining whether an increase or decrease direction of the voltage setting information is identical to an increase or decrease direction of the measured voltage information.

7. The method of claim 1, further comprising:

receiving, from the wireless power receiver, a request for determining cross connection; and

setting the wireless power receiver to a dominant wireless power receiver.

8. The method of claim 7, wherein the request for determining the cross connection is included in a Power Receiving Unit (PRU) dynamic signal.

9. A method for determining a cross connection during wireless charging, the method comprising:

changing voltage setting information;

transmitting the changed voltage setting information to a wireless power transmitter;

receiving power from the wireless power transmitter;

measuring a charging voltage based on the received power; and

determining whether a cross connection occurs based on the measured charging voltage and the changed voltage setting information.

10. The method of claim 9, wherein the changed voltage information is transmitted through a Power Receiving Unit (PRU) dynamic signal.

11. The method of claim 9, wherein transmitting the changed voltage setting and measuring the charging voltage are repeated a set number of times, and

wherein determining whether the cross connection occurs based on the measured charging voltage and the changed voltage setting information comprises determining that the cross connection occurs, if a cross connection condition is satisfied a preset number of times as a result of repeatedly transmitting the changed voltage setting and measuring the charging voltage the set number of times.

12. The method of claim 9, wherein the changed voltage setting information comprises information indicating that a voltage is increased by a preset value from a current voltage indicated by current voltage setting information.

13. The method of claim 9, wherein the changed voltage setting information comprises information indicating that a voltage is decreased by a preset value from a current voltage indicated by current voltage setting information.

14. The method of claim 9, wherein determining whether the cross connection occurs comprises determining whether an increase or decrease direction of the voltage setting information is identical to an increase or decrease direction of the measured charging voltage.

15. The method of claim 9, further comprising transmitting a request for determining cross connection.

16. The method of claim 15, wherein the request for determining the cross connection is transmitted through a Power Receiving Unit (PRU) dynamic signal.

17. An apparatus for determining a cross connection during wireless charging, the apparatus comprising:

a transceiver for receiving changed voltage setting information from a wireless power receiver;

a wireless power transmitter for transmitting power adjusted according to the received voltage setting information; and

a controller for receiving, via the transceiver, measured voltage information from the wireless power receiver, and determining whether a cross connection occurs based on the voltage setting information and the measured voltage information.

18. The apparatus of claim 17, wherein the changed voltage setting information is included in a Power Receiving Unit (PRU) dynamic signal.

19. The apparatus of claim 17, wherein the adjusted power is repeatedly transmitted and the measured voltage information is repeatedly received a set number of times, and

wherein the controller determines that the cross connection occurs, if a cross connection condition is satisfied a preset number of times as a result of repeatedly transmitting the adjusted power and receiving the measured voltage information the set number of times.

20. The apparatus of claim 17, wherein the changed voltage setting information comprises information indicating that a voltage is increased by a preset value from a current voltage indicated by current voltage setting information.

21. The apparatus of claim 17, wherein the changed voltage setting information comprises information indicating that a voltage is decreased by a preset value from a current voltage indicated by current voltage setting information.

22. The apparatus of claim 17, wherein the controller determines whether the cross connection occurs by determining whether an increase or decrease direction of the voltage setting information is identical to an increase or decrease direction of the measured voltage information.

23. The apparatus of claim 17, wherein the transceiver receives, from the wireless power receiver, a request for determining cross connection, and

wherein the controller sets the wireless power receiver to a dominant wireless power receiver.

24. The apparatus of claim 23, wherein the request for determining the cross connection is included in a Power Receiving Unit (PRU) dynamic signal.

25. An apparatus for determining a cross connection during wireless charging, the apparatus comprising:

a controller for changing voltage setting information;

a transceiver for transmitting the changed voltage setting information to a wireless power transmitter; and

a wireless power receiver for receiving power from the wireless power transmitter,

wherein the controller measures a charging voltage based on the received power, and determines whether a cross connection occurs, based on the measured charging voltage and the changed voltage setting information.

26. The apparatus of claim 25, wherein the changed voltage information is transmitted through a Power Receiving Unit (PRU) dynamic signal.

27. The apparatus of claim 25, wherein the changed voltage setting is repeatedly transmitted and the charging voltage is repeatedly measured a set number of times, and

wherein the controller determines that the cross connection occurs, if a cross connection condition is satisfied a preset number of times as a result of repeatedly transmitting the changed voltage setting and measuring the charging voltage the set number of times.

28. The apparatus of claim 25, wherein the changed voltage setting information comprises information indicating that a voltage is increased by a preset value from a current voltage indicated by current voltage setting information.

29. The apparatus of claim 25, wherein the changed voltage setting information comprises information indicating that a voltage is decreased by a preset value from a current voltage indicated by current voltage setting information.

30. The apparatus of claim 25, wherein the controller determines whether the cross connection occurs by determining whether an increase or decrease direction of the voltage setting information is identical to an increase or decrease direction of the measured charging voltage.

31. The apparatus of claim 25, wherein the transmitter transmits a request for determining cross connection.

32. The apparatus of claim 31, wherein the request for determining the cross connection is transmitted through a Power Receiving Unit (PRU) dynamic signal.