WIRELESS CHARGING DEVICE, POWER RECEIVING DEVICE, AND WIRELESS FLAT-PANEL CHARGING SYSTEM

• US 20150091512A1
• Filed: 12/20/2012
• Published: 04/02/2015
• Est. Priority Date: 04/24/2012
• Status: Abandoned Application

• Current Assignee: Shenzhen Feifan Industrial Co., Ltd.
• Original Assignee: Shenzhen Feifan Industrial Co., Ltd.
• Inventors: Mai, Huabin
• Application Number:
  US14/396,587
• Publication Number:
  US 20150091512A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

A wireless charging device, a power receiving device and a wireless flat-panel charging system have been disclosed. The wireless charging device includes a support main body, at least two electrodes are arranged on the surface of the support main body, an insulation gap is arranged between the electrodes, and each electrode is respectively connected to a charging power source. The power receiving device includes at least two conductive contacts, the smallest edge distance of a single conductive contact is greater than the size of the insulation gap between the electrodes, and the smallest distance between edges of adjacent conductive contacts is greater than the largest edge distance of a single electrode. The power receiving device is placed on the wireless charging device, the conductive contacts of the power receiving device contact the electrodes of the wireless charging device, and power is directly supplied for the conductive contacts by using the electrodes.

Claims

1-10. -10. (canceled)

11. A wireless charging device, comprising a support main body;

wherein at least two electrodes are arranged on a surface of the support main body, and an insulation gap is arranged between the electrodes;

each of the electrodes is respectively connected to a charging power source;

the electrodes have regular or irregular shape.

12. The wireless charging device of claim 11, wherein the electrodes comprise a first electrode and a second electrode, and the second electrode surrounds a periphery of the first electrode.

13. The wireless charging device of claim 12, wherein the insulation gap has an equal distance between the first electrode and the second electrode, and a limit flange is also disposed around a periphery of the second electrode.

14. The wireless charging device of claim 11, wherein the support main body is a flat-panel main body;

said electrodes comprise more than two electrodes, and the electrodes are arranged on the flat-panel main body with an equal or unequal spacing.

15. The wireless charging device of claim 11, wherein the charging power source comprises a power supply circuit electrically connected with the electrodes;

the power supply circuit is arranged on the support main body or separated from the support main body.

16. The wireless charging device of claim 15, wherein the power supply circuit comprises a detection circuit, a switching circuit, a control circuit and a power circuit;

the power circuit is connected with the detection circuit, the switching circuit and the control circuit for supplying power;

the detection circuit is electrically connected with each of the electrodes for detecting whether the electrodes are in contact with a conductive contact of a power receiving device;

the switching circuit is electrically connected with each of the electrodes for switching on or switching off the power supplied to the electrodes;

the control circuit is connected with the detection circuit and the switching circuit;

wherein based on whether each of the electrodes is in contact with the conductive contact detected by the detection circuit, the control circuit is operable to send out a control signal to the switching circuit so that each of the electrodes is controlled to connect to or disconnect from the power circuit.

17. The wireless charging device of claim 16, wherein the switching circuit comprises a positive switching circuit and a negative switching circuit which are simultaneously connected with each of the electrodes;

the detection circuit comprises a plurality of detection units, wherein each of the detection units is electrically connected with one of the electrodes;

the positive switching circuit comprises a plurality of positive switching units, wherein each of the positive switching units is electrically connected with one of the electrodes;

the negative switching circuit comprises a plurality of negative switching units, wherein each of the negative switching units is electrically connected with one of the electrodes;

the positive switching unit and the negative switching unit connected with the same electrode are controlled by the control circuit to be alternatively switched on or simultaneously switched off.

18. A power receiving device capable of cooperating with the wireless charging device of claims 11, wherein the power receiving device comprises at least two conductive contacts;

wherein

a smallest edge distance of a single conductive contact is larger than a size of the insulation gap between the electrodes of the wireless charging device, and a smallest distance between edges of adjacent conductive contacts is larger than a largest edge distance of a single electrode.

19. The power receiving device of claim 18, wherein the power receiving device also comprise a power module electrically connected with the conductive contacts;

the power module comprises one or more of toy, game equipment, cell phone, battery, charger, handheld equipment, electric tool, power connector, electric cup, music player, camera, calculator, remote controller, video tape recorder, video player, fax machine, PDA beauty equipment, electric shaver, electric tooth brush, electric hair cutter, television, refrigerator.

20. The power receiving device of claim 18, wherein the power receiving device also comprises a housing, and the conductive contacts are disposed on the housing;

wherein the housing is also arranged with an interface module electrically connected with the conductive contacts.

21. A wireless charging system, comprising the wireless charging device of claim 11 and the power receiving device of claim 18;

the power receiving device is placed on the wireless charging device, and two conductive contacts of the power receiving device are respectively in electrical contact with at least two electrodes of the wireless charging device, such that the power receiving device is powered by the wireless charging device.

22. The wireless charging system of claim 21, wherein the electrodes comprise a first electrode and a second electrode, and the second electrode surrounds a periphery of the first electrode.

23. The wireless charging system of claim 22, wherein the insulation gap has equal distance between the first electrode and the second electrode, and a limit flange is also disposed around a periphery of the second electrode.

24. The wireless charging system of claim 21, wherein the support main body is a flat-panel main body;

said electrodes comprise more than two electrodes, and the electrodes are arranged on the flat-panel main body with an equal or unequal spacing.

25. The wireless charging system of claim 21, wherein the charging power source comprises a power supply circuit electrically connected with the electrodes;

the power supply circuit is arranged on the support main body or separated from the support main body.

26. The wireless charging system of claim 25, wherein the power supply circuit comprises a detection circuit, a switching circuit, a control circuit and a power circuit;

the power circuit is connected with the detection circuit, the switching circuit and the control circuit for supplying power;

the detection circuit is electrically connected with each of the electrodes for detecting whether the electrodes are in contact with a conductive contact of a power receiving device;

the switching circuit is electrically connected with each of the electrodes for switching on or switching off the power supplied to the electrodes;

the control circuit is connected with the detection circuit and the switching circuit;

wherein based on whether each of the electrodes is in contact with the conductive contact detected by the detection circuit, the control circuit is operable to send out a control signal to the switching circuit so that each of the electrodes is controlled to connect to or disconnect from the power circuit.

27. The wireless charging system of claim 26, wherein the switching circuit comprises a positive switching circuit and a negative switching circuit which are simultaneously connected with each of the electrodes;

the detection circuit comprises a plurality of detection units, wherein each of the detection units is electrically connected with one of the electrodes;

the positive switching circuit comprises a plurality of positive switching units, wherein each of the positive switching units is electrically connected with one of the electrodes;

the negative switching circuit comprises a plurality of negative switching units, wherein each of the negative switching units is electrically connected with one of the electrodes;

the positive switching unit and the negative switching unit connected with the same electrode are controlled by the control circuit to be alternatively switched on or simultaneously switched off.

28. The wireless charging system of claim 21, wherein the power receiving device also comprise a power module electrically connected with the conductive contacts;

the power module comprises one or more of toy, game equipment, cell phone, battery, charger, handheld equipment, electric tool, power connector, electric cup, music player, camera, calculator, remote controller, video tape recorder, video player, fax machine, PDA beauty equipment, electric shaver, electric tooth brush, electric hair cutter, television, refrigerator.

29. The wireless charging system of claim 28, wherein the power receiving device also comprises a housing, and the conductive contacts are disposed on the housing;

wherein the housing is also arranged with an interface module electrically connected with the conductive contacts.