WIRELESS CHARGING METHOD, WIRELESS CHARGING DEVICE, AND WIRELESS CHARGING SYSTEM

• US 20170063139A1
• Filed: 03/14/2016
• Published: 03/02/2017
• Est. Priority Date: 08/31/2015
• Status: Active Grant

• Current Assignee: Wistron Corporation
• Original Assignee: Wistron Corporation
• Inventors: Chang, Yao-Tsung, Wu, Te-Lung, Tsai, Chu-Chia
• Granted Patent: US 9,948,133 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

A wireless charging method includes obtaining charging information of a plurality of electronic devices, and charging the plurality of electronic devices in sequence according to the charging information of the plurality of electronic devices. For each electronic device, a charging resonance frequency is chosen and accordingly the corresponding wireless charging power is provided for charging.

Claims

1. A wireless charging method, comprising:

obtaining charging information of a plurality of electronic devices; and

charging the plurality of electronic devices in sequence according to the charging information of the plurality of electronic devices;

wherein for each electronic device, a charging resonance frequency is chosen and accordingly the corresponding wireless charging power is provided for charging.

2. The method of claim 1, wherein when charging each electronic device, a wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

3. The method of claim 1, wherein for each electronic device, the resonance frequency of the each electronic device is set as the charging resonance frequency, and the resonance frequency of a wireless charging device is adjusted to the charging resonance frequency, wherein when charging each electronic device, a wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

4. The method of claim 1, wherein for each electronic device, the resonance frequency of a wireless charging device is set as the charging resonance frequency, and the resonance frequency of the each electronic device is adjusted to the charging resonance frequency, wherein when charging each electronic device, a wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

5. The method of claim 1, wherein the step of charging the plurality of electronic devices in sequence according to the charging information of the plurality of electronic devices comprising:

determining a charging sequence according to the charging information of the plurality of electronic devices; and

charging the plurality of electronic devices according to the charging sequence.

6. The method of claim 5, further comprising:

utilizing a plurality of switches to control the plurality of the electronic devices to receive the corresponding wireless charging power in sequence according to the charging sequence.

7. The method of claim 1, wherein the charging information of each electronic device comprises at least one of a resonance frequency, current strength of charging current, state of charge, full charging time, remaining battery capacity, and discharging voltage of the each electronic device.

8. A wireless charging system, comprising:

a plurality of electronic devices; and

a wireless charging device, for obtaining charging information of the plurality of electronic devices and charging the plurality of electronic devices in sequence according to the charging information of the plurality of electronic devices;

wherein for each electronic device, the wireless charging device provides the corresponding wireless charging power to charge the each electronic device according to a charging resonance frequency.

9. The wireless charging system of claim 8, wherein for each electronic device, the resonance frequency of the each electronic device is set as the charging resonance frequency, and the resonance frequency of the wireless charging device is adjusted to the charging resonance frequency, wherein when charging each electronic device, the wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

10. The wireless charging system of claim 8, wherein for each electronic device, the resonance frequency of the wireless charging device is set as the charging resonance frequency, and the resonance frequency of the each electronic device is adjusted to the charging resonance frequency, wherein when charging each electronic device, the wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

11. The wireless charging system of claim 8, wherein when charging each electronic device, the wireless charging device operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

12. The wireless charging system of claim 8, wherein the wireless charging device determines a charging sequence according to the charging information of the plurality of electronic devices and charges the plurality of electronic devices according to the charging sequence.

13. The wireless charging system of claim 12, further comprising:

a plurality of switches, for controlling the plurality of the electronic devices to receive the corresponding wireless charging power in sequence.

14. The wireless charging system of claim 8, wherein the charging information of each electronic device contains at least one of a resonance frequency, current strength of charging current, state of charge, full charging time, remaining battery capacity, and a discharging voltage of the each electronic device.

15. A wireless charging device, comprising:

a communication unit, for obtaining charging information of a plurality of electronic devices;

a power transmission unit, for generating and transmitting wireless charging power; and

a control unit, for controlling the power transmission unit to generate and transmit the wireless charging power to the plurality of electronic devices in sequence according to the charging information of the plurality of electronic devices;

wherein for each electronic device, the control unit controls the power transmission unit to provide the corresponding wireless charging power to charge the each electronic device according to a charging resonance frequency.

16. The wireless charging device of claim 15, for each electronic device, the resonance frequency of the each electronic device is set as the charging resonance frequency, and the resonance frequency of the wireless charging device is adjusted to the charging resonance frequency, wherein when charging each electronic device, the power transmission unit operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

17. The wireless charging device of claim 15, wherein for each electronic device, the resonance frequency of the wireless charging device is set as the charging resonance frequency, and the resonance frequency of the each electronic device is adjusted to the charging resonance frequency, wherein when charging each electronic device, the power transmission unit operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

18. The wireless charging device of claim 15, wherein for each electronic device, the resonance frequency of the wireless charging device and the each electronic device are adjusted to the charging resonance frequency, wherein when charging each electronic device, the power transmission unit operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

19. The wireless charging device of claim 15, wherein when charging each electronic device, the power transmission unit operates at the charging resonance frequency to generate and transmit the corresponding wireless charging power, and the each electronic device operates at the charging resonance frequency to receive the corresponding wireless charging power.

20. The wireless charging device of claim 15, wherein the control unit determines a charging sequence according to the charging information of the plurality of electronic devices and controls the power transmission unit to provide the corresponding wireless charging power to the plurality of electronic devices in sequence according to the charging sequence.

21. The wireless charging device of claim 15, wherein the charging information of each electronic device contains at least one of a resonance frequency, current strength of charging current, state of charge, full charging time, remaining battery capacity, and a discharging voltage of the each electronic device.