Electronic device and power supplying method and wireless power supplying system thereof

• US 9,356,476 B2
• Filed: 12/23/2010
• Issued: 05/31/2016
• Est. Priority Date: 06/24/2010
• Status: Active Grant

• Current Assignee: Haier Group Corporation (Haier Group Company), Qingdao Haier Electronics Company Limited (Haier Group Company)
• Original Assignee: Haier Group Corporation (Haier Group Company), Qingdao Haier Electronics Company Limited (Haier Group Company)
• Inventors: Chi, Ronghong, Li, Jinliang, Yu, Zida, Bai, Bing
• Primary Examiner(s): Tran, Thienvu
• Assistant Examiner(s): Mai, Tien
• Application Number:
  US13/701,171
• Publication Number:
  US 20130076155A1
• Time in Patent Office: 1,986 Days
• US Class Current: 1/1
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• 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 9/061 for DC powered loads

Abstract

An electronic device, and a power supplying method and a wireless power supplying system thereof. The electronic device includes a wired electric power receiving module, a wireless electric power receiving module and a switch. The wired electric power receiving module is connected to an external power supply by wired transmission. The wireless electric power receiving module receives the wireless electric power from an external wireless electric power transmitting device. The switch is coupled to the wired electric power receiving module and the wireless electric power receiving module and is used to switch between the wired electric power receiving module and the wireless electric power receiving module, to supply the operating voltage. The electronic device can operate in the wireless power supplying mode or the wired power supplying mode, so as to facilitate a user to use.

Claims

1. An electronic device, comprising:

a wired electric power receiving module, which is connected to an external power supply in a wired manner to provide an operating voltage of the electronic device;

a wireless electric power receiving module, which is adapted to receive, in a wireless manner, electric power transmitted from an external wireless electric power transmitting device, and provide the operating voltage of the electric device; and

a switch, which is electrically coupled to the wired electric power receiving module and the wireless electric power receiving module alternatively to switch between the wired electric power receiving module and the wireless electric power receiving module, to provide the operating voltage of the electric device, wherein, the wireless electric power receiving module includes;

a wireless electric power receiving and transforming unit, which is electrically coupled to the switch, and is adapted to receive the wireless electric power, and adjust electrical parameters of the received wireless electric power to output the operating voltage to the switch;

a detection control unit, which is adapted to detect whether the wired connection between the wired electric power receiving module and the external power supply has been established; and

a wireless signal transceiver unit, which is controlled by the detection control unit, the wireless signal transceiver unit being adapted to transmit to the external wireless electric power transmitting device a request for stopping the wireless electric power transmission, when the detection control unit detects that the wired connection between the wired electric power receiving module and the external power supply has been established.

2. The electronic device of claim 1, wherein, when a wired connection between the wired electric power receiving module and the external power supply is established, the operating voltage is provided by the wired electric power receiving module, and when the wired connection between the wired electric power receiving module and the external power supply is not established, the operating voltage is provided by the wireless electric power receiving module.

3. The electronic device of claim 1, wherein, the switch includes a normally open contact and a normally closed contact, the normally closed contact is electrically coupled to the wireless electric power receiving module and the normally open contact is electrically coupled to the wired electric power receiving module.

4. The electronic device of claim 3, wherein, the switch is a relay.

5. The electronic device of claim 1, wherein, the wired electric power receiving module includes:

an AC input terminal, which is electrically coupled to the normally open contact of the switch.

6. The electronic device of claim 1, wherein, a resonant magnetic coupling is established between the wireless electric power receiving module and the external wireless electric power transmitting device to receive the wireless electric power.

7. The electronic device of claim 1, wherein, the electric device further comprises a state display system which is electrically connected to the switch and the internal function circuit of the electronic device, and is adapted to display a current power supplying state of the electronic device when the electronic device is operating in a wired power supplying mode or a wireless power supplying mode.

8. The electronic device of claim 7, wherein, the state display system includes a state detection module, a micro controller unit, a data storage module, a data processing module and a display module, wherein the state detection module, the data storage module, the data processing module and the display module are each electrically connected to the micro controller unit, and the data processing module is electrically connected to the data storage module and the display module, respectively.

9. The electronic device of claim 8, wherein, one end of the state detection module is electrically connected to the switch, and the other end of the state detection module is electrically connected to the micro controller unit;

the state detection module receives a switch state signal from the switch, and transmits the switch state signal to the micro controller unit;

and the micro controller unit processes the switch state signal and then outputs a control signal to the data processing module.

10. The electronic device of claim 8, wherein, the data storage module is electrically connected to the micro controller unit and is adapted to store preset state information including wired power supplying state information and wireless power supplying state information.

11. The electronic device of claim 10, wherein, the data processing module is electrically connected to the micro controller unit, the data processing module and the display module respectively, and is adapted to receive the control signal output from the micro controller unit, and read matched state information from the data storage module.

12. The electronic device of claim 11, wherein, the display module is connected to the micro controller unit and the data processing module, respectively, and is adapted to display the state information transmitted from the data processing module.

13. A wireless power supplying system including:

a wireless electric power transmitting device, and a wireless electric power receiving device, which is separated from the wireless electric power transmitting device and includes;

a wireless electric power receiving and transforming unit, a voltage being generated by an induction between the wireless electric power receiving and transforming unit and the wireless electric power transmitting device;

a detection control unit, which is adapted to detect whether the electric device operates in a wired power supplying mode; and

a wireless signal transceiver unit, which is controlled by the detection control unit, and is adapted to transmit to the wireless electric power transmitting device a request for stopping wireless electric power transmission, when the detection control unit detects that the electronic device operates in the wired power supplying mode.

14. The wireless power supplying system of claim 13, wherein, a resonant magnetic coupling is established between the wireless electric power receiving and transforming unit and the wireless electric power transmitting device to receive a high frequency AC signal.

15. The wireless power supplying system of claim 13, wherein, the wireless electric power transmitting device includes:

a main controller;

a wireless electric power generating and transmitting unit, which is controlled by the main controller to generates a high frequency AC signal according to a DC voltage, and transmits the high frequency AC signal to the wireless electric power receiving and transforming unit in a wireless manner; and

a second wireless signal transceiver unit, which is electrically connected to the main controller, receives the request for stopping the wireless electric power transmission, and transmits the request to the main controller.

16. The wireless power supplying system of claim 15, further comprising:

a power supplying device, which is adapted to provide the DC voltage and the operating voltages of the main controller and the wireless electric power transmitting unit according to an AC input voltage.

17. A power supplying method of an electronic device, suitable for the electronic device having a wireless power supplying module and a wired power supplying module that are switchable, the method including steps of:

presetting the electronic device to receive a power supply voltage from the wireless power supplying module;

switching off the wireless power supplying module when the electronic device starts to receive the power supply voltage from the wired power supplying module;

detecting, by a detection control unit, whether a wired connection between a wired electric power receiving module and an external power supply has been established;

transmitting a request for starting wireless electric power transmission to an external wireless power supplying module and switching the electronic device to a wireless power supplying mode if the wired connection between the wired electric power receiving module and the external power supply has not been established; and

transmitting, by a wireless signal transceiver unit that is controlled by the detection control unit, to the external wireless power supplying module a request for stopping the wireless electric power transmission, when the detection control unit detects that the wired connection between the wired electric power receiving module and the external power supply has been established.

18. The power supplying method of the electronic device of claim 17, wherein, before the step of switching off the wireless power supplying module when the electronic device starts to receive the power supply voltage from the wired power supplying module, the method further comprising step of:

detecting whether the electronic device has started to receive the power supply voltage from the wired power supplying module.

19. The power supplying method of the electronic device of claim 18, wherein, after the step of detecting whether the electronic device has started to receive the power supply voltage from the wired power supplying module, the method further comprising step of:

after detecting that the electronic device has started to receive the power supply voltage from the wired power supplying module, transmitting a result of the detection outwards from the electronic device in a wireless manner.