Portable device and wireless power charging system for portable device

• US 9,935,489 B2
• Filed: 05/02/2017
• Issued: 04/03/2018
• Est. Priority Date: 03/25/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Nam Yun, Kwon, Sang Wook
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US15/584,297
• Publication Number:
  US 20170237281A1
• Time in Patent Office: 336 Days
• Field of Search: 320107, 320108, 320114, 307104
• 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 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/04 Regulation of charging 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 portable device is provided. The portable device includes a power receiving unit configured to receive a first energy or a second energy from a wireless power transmitter, the first energy being used to perform a communication function and a control function, the second energy being used to charge a battery, and the wireless power transmitter being configured to wirelessly transmit a power, a voltage generator configured to generate a wake-up voltage from the first energy, or to generate a voltage for charging the battery from the second energy, a controller configured to perform the communication function and the control function, the controller being activated by the wake-up voltage, and a communication unit configured to perform a communication with the wireless power transmitter based on a control of the controller.

Claims

1. A wireless power receiver, comprising:

a power receiving circuit configured to receive a first energy or a second energy from a wireless power transmitter, the first energy being used to perform a communication function, and the second energy being used to charge a battery;

a voltage generating circuit configured to generate a voltage for activating a controller from the first energy, or to generate a voltage for charging the battery from the second energy; and

a communication circuit configured to perform the communication function based on control of the controller.

2. The wireless power receiver of claim 1, wherein the power receiving circuit comprising at least one of antenna.

3. The wireless power receiver of claim 1, wherein the first energy or the second energy is received by the at least one of antenna.

4. The wireless power receiver of claim 1, wherein the power receiving circuit comprising a resonator.

5. The wireless power receiver of claim 4, the resonator is configured to form a magnetic coupling with a source resonator of the wireless power transmitter, and to receive the first energy or the second energy based on the magnetic coupling.

6. The wireless power receiver of claim 1, further comprising a matching controller configured to adjust a resonance frequency or an impedance of the resonator based on the control of the controller.

7. The wireless power receiver of claim 1, wherein the voltage generating circuit comprises a rectifier configured to generate the voltage for activating the controller by rectifying the first energy, and to generate the voltage for charging the battery by rectifying the second energy.

8. The wireless power receiver of claim 1, wherein, in response to the controller being activated by the voltage for activating the controller, the controller is further configured to generate a control signal to begin supplying a voltage from the battery to the controller and the communication circuit.

9. The wireless power receiver of claim 1, wherein the communication circuit is further configured to perform the communication with the wireless power transmitter, using a BLUETOOTH-type network, a wireless local area network (WLAN), or a wireless communication network.

10. The wireless power receiver of claim 1, wherein the communication circuit is further configured to be activated by the controller based on the voltage for activating the controller, and to transmit information comprising an identifier (ID) of the wireless power receiver to the wireless power transmitter.

11. The wireless power receiver of claim 10, wherein, the communication circuit is further configured to transmit state information of the wireless power receiver to the wireless power transmitter.

12. The wireless power receiver of claim 10, wherein the state information comprises at least one of information on a current flowing in the resonator, information on a voltage concerned with the resonator, and information on a charge state of the battery.

13. An operating method of a wireless power receiver, the operating method comprising:

receiving a first energy or a second energy from a wireless power transmitter, the first energy being used to perform a communication function, and the second energy being used to charge a battery;

generating a voltage for activating a controller from the first energy, or to generate a voltage for charging the battery from the second energy; and

communicating with the wireless power transmitter based on control of the controller.

14. The operating method of claim 13, further comprising activating, by the first energy, at least one of the controller and a communication circuit.