Wireless power receiver and control method thereof

Patent metadata

Field	Value
Publication number	US-9509151-B2
Application number	US-201213608432-A
Country	US
Kind code	B2
Filing date	Sep 10, 2012
Priority date	Sep 8, 2011
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

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.

First claim

What is claimed is:

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.

Assignees

• Lee Kyung-Woo
• Won Eun-Tae
• Lee Young-Min
• Park Se-Ho
• Kang Noh-Gyoung
• Byun Kang-Ho
• Samsung Electronics Co Ltd

Inventors

• Lee Kyung-Woo
• Won Eun-Tae
• Lee Young-Min
• Park Se-Ho
• Kang Noh-Gyoung
• Byun Kang-Ho

Classifications

• H02J50/05

  using capacitive coupling · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/50 Primary

  acting upon multiple batteries simultaneously or sequentially · CPC title