Wireless power receiver and control method thereof

• US 9,509,151 B2
• Filed: 09/10/2012
• Issued: 11/29/2016
• Est. Priority Date: 09/08/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kang, Noh-Gyoung, Lee, Kyung-Woo, Won, Eun-Tae, Lee, Young-Min, Park, Se-Ho, Byun, Kang-Ho
• Primary Examiner(s): Memula, Suresh
• Application Number:
  US13/608,432
• Publication Number:
  US 20130063082A1
• Time in Patent Office: 1,541 Days
• Field of Search: 320/108
• US Class Current: 1/1
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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
• 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
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

Methods and apparatus are provided for controlling a wireless power receiver for wirelessly receiving power. A drive power for driving the wireless power receiver is received from a wireless power transmitter. A communication network is established with the wireless power transmitter. A wireless power network that is controlled by the wireless power transmitter is joined. A charge power is received from the wireless power transmitter.

Claims

1. A method of controlling a wireless power receiver for wirelessly receiving power, the method comprising the steps of:

receiving a first power which has a first magnitude;

transmitting a first signal to a wireless power transmitter;

establishing a communication connection with the wireless power transmitter while receiving the first power, wherein the communication connection is associated with the first signal;

joining a wireless power network that is controlled by the wireless power transmitter while receiving the first power; and

receiving a second power which has a second magnitude after joining the wireless power network, wherein the second magnitude is greater than the first magnitude.

2. The method as claimed in claim 1, further comprising:

receiving a second signal from the wireless power transmitter, wherein the second signal corresponds to the first signal.

3. The method as claimed in claim 2, further comprising:

transmitting a third signal to the wireless power transmitter in response to receiving the second signal; and

receiving a fourth signal from the wireless power transmitter, wherein the fourth signal corresponds to the third signal.

4. The method as claimed in claim 3, wherein the third signal comprises a status of the wireless power receiver and the fourth signal comprises a capability of the wireless power transmitter.

5. The method as claimed in claim 1, further comprising:

receiving a command signal indicating a charge start command from the wireless power transmitter; and

starting charging, in correspondence with the command signal.

6. A wireless power receiver for wirelessly receiving power, the wireless power receiver comprising:

a communication unit configured to transmit a first signal to a wireless power transmitter; and

a power reception unit configured to receive a first power which has a first magnitude,

wherein the communication unit is further configured to establish a communication connection with the wireless power transmitter and join a wireless power network that is controlled by the wireless power transmitter while receiving the first power,

wherein the communication connection is associated with the first signal,

wherein the power reception unit is further configured to receive a second power which has a second magnitude after joining the wireless power network, and

wherein the second magnitude is greater than the first magnitude.

7. The wireless power receiver as claimed in claim 6, wherein the communication unit is further configured to receive a second signal from the wireless power transmitter, wherein the second signal corresponds to the first signal.

8. The wireless power receiver as claimed in claim 7, wherein the communication unit is further configured to transmit a third signal to the wireless power transmitter in response to receiving the second signal and receive a fourth signal from the wireless power transmitter, wherein the fourth signal corresponds to the third signal.

9. The wireless power receiver as claimed in claim 8, wherein the third signal comprises a status of the wireless power receiver and the fourth signal comprises a capability of the wireless power transmitter.

10. The wireless power receiver as claimed in claim 6, further comprising:

a control unit,

wherein the communication unit is further configured to receive a command signal indicating a charge start command from the wireless power transmitter, and

wherein the control unit is configured to start charging, in correspondence with the command signal.