Method and device for transmitting and receiving wireless power

• US 10,069,344 B2
• Filed: 03/05/2014
• Issued: 09/04/2018
• Est. Priority Date: 11/20/2013
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Wang, Hongwei, Fan, Zhifeng
• Primary Examiner(s): Zweizig, Jeffrey
• Application Number:
  US15/035,663
• Publication Number:
  US 20160268845A1
• Time in Patent Office: 1,644 Days
• 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 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

The embodiments of disclosure disclose a method and device for transmitting and receiving wireless power. The method includes: switching a state of a resonance element used for transmitting and receiving electromagnetic waves to an electromagnetic wave transmission state; boosting a first direct current output by a mobile device to a second direct current having a predetermined voltage; inverting the second direct current to an alternating current; converting the alternating current into an electromagnetic wave and transmitting the electromagnetic wave, wherein the electromagnetic wave is used for charging a to-be-charged device. The embodiments of the disclosure provide a solution for wirelessly charging peripherals through a terminal and thus solves a problem that there is no solution provided to wirelessly charge peripherals through the terminal in the related art.

Claims

1. A device for transmitting and receiving wireless power, comprising:

a wireless power receiving component, a wireless power transmitting component and a master control component, wherein the wireless power receiving component and the wireless power transmitting component share one resonance element;

the wireless power transmitting component further comprises;

a boosting element and an inversion element;

the boosting element is configured to boost a first direct current output by a mobile device to a second direct current having a predetermined voltage;

the inversion element is connected with the boosting element and configured to invert the second direct current to an alternating current;

the resonance element is connected with the inversion element and configured to convert the alternating current into an electromagnetic wave and transmit the electromagnetic wave, wherein the electromagnetic wave is used for charging a to-be-charged device;

wherein the master control component is configured to send control information, wherein the control information is used for adjusting at least one parameter of the boosting element or the inversion element;

wherein the boosting element comprises;

a voltage detection subelement, a first Pulse Width Modulation (PWM) control subelement and a boosting subelement, wherein

the voltage detection subelement is configured to detect a voltage of a direct current output by the boosting subelement and to feed back a detection result to the master control component;

the first PWM control subelement is configured to determine a PWM signal duty ratio according to the control information sent by the master control component, wherein the control information is determined by the master control component according to the detection result;

the boosting subelement is configured to adjust the voltage of the output direct current to the predetermined voltage according to the PWM signal duty ratio.

2. The device as claimed in claim 1, wherein the resonance element is further configured to convert a received electromagnetic wave into an alternating current and transmit the converted alternating current to a rectification element of the wireless power receiving component.

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

a switch element, which is configured to switch on a connection between the inversion element and the resonance element or switch on a connection between the rectification element and the resonance element.

4. The device as claimed in claim 3, wherein

the master control component is further configured to send a switching signal to the switch element according to an input of a user, wherein the switching signal is used for indicating the switch element to switch on a connection between the inversion element and the resonance element, or, between the rectification element and the resonance element.

5. The device as claimed in claim 1, wherein the inversion element comprises:

a second PWM control subelement and an inversion subelement, wherein

the second PWM control subelement is configured to determine at least one parameter of the inversion subelement according to the control information sent by the master control component;

the inversion subelement is configured to invert the second direct current to the alternating current according to at least one parameter determined by the second PWM control subelement.

6. The device as claimed in claim 1, further comprising:

a communication component, which is configured to interact information with the to-be-charged device and send the information to the master control component, wherein the master control component determines the at least one parameter of the inversion element according to the information.

7. The device as claimed in claim 5, further comprising:

a communication component, which is configured to interact information with the to-be-charged device and send the information to the master control component, wherein the master control component determines the at least one parameter of the inversion element according to the information.

8. A method for transmitting and receiving wireless power, comprising:

switching a state of a resonance element used for transmitting and receiving an electromagnetic wave into an electromagnetic wave transmission state;

boosting a first direct current output by a mobile device to a second direct current having a predetermined voltage;

inverting the second direct current to an alternating current;

converting the alternating current into an electromagnetic wave and transmitting the electromagnetic wave, wherein the electromagnetic wave is used for charging a to-be-charged device;

wherein boosting the first direct current output by the mobile device to the second direct current having the predetermined voltage comprises;

detecting a voltage of the output boosted direct current and sending the detection result to a master control component;

determining a PWM signal duty ratio according to control information sent by the master control component, wherein the control information is determined by the master control component according to the detection result;

adjusting the voltage of the output direct current to the predetermined voltage according to the PWM signal duty ratio.

9. The method as claimed in claim 8, wherein inverting the second direct current to the alternating current comprises:

determining at least one parameter used for inverting the second direct current according to the control information sent by the master control component;

inverting the second direct current to the alternating current according to the at least one parameter used for inverting the second direct current.