WIRELESS CHARGING MODULE AND ELECTRONIC APPARATUS

• US 20090289595A1
• Filed: 10/09/2008
• Published: 11/26/2009
• Est. Priority Date: 05/20/2008
• Status: Abandoned Application

• Current Assignee: Darfon Electronics Corporation
• Original Assignee: Darfon Electronics Corporation
• Inventors: CHEN, Chih-Jung, HSU, Cheng-Chieh, LIN, Chih-Lung
• Application Number:
  US12/248,265
• Publication Number:
  US 20090289595A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits

Abstract

A wireless charging module includes a wireless power supplying module and a wireless receiving module. The wireless power supplying module includes a first resonator, which is for receiving first electric energy and has a first resonance frequency. The wireless receiving module includes a body, a shell, a second resonator and a charging circuit. The body is electrically connected to a battery. The second resonator is located on an inner wall of the shell and is electrically connected to the body. The second resonator has a second resonance frequency substantially the same as the first resonance frequency. The first electric energy of the first resonator is coupled to the second resonator so that non-radiative energy transfer is performed between the first and second resonators. The second resonator provides second electric energy. The charging circuit receives the second electric energy to charge the battery.

Claims

1. A wireless charging module, comprising:

a wireless power supplying module, which comprises;

a first resonator, having a first resonance frequency, for receiving first electric energy; and

a wireless receiving module, which comprises;

a body electrically connected to a battery;

a second resonator electrically connected to the body and having a second resonance frequency substantially the same as the first resonance frequency, wherein the first electric energy of the first resonator is coupled to the second resonator so that non-radiative energy transfer is performed between the first resonator and the second resonator, and the second resonator provides second electric energy; and

a charging circuit for receiving the second electric energy to charge the battery.

2. The wireless charging module according to claim 1, wherein the wireless power supplying module further comprises:

a power circuit for providing power;

an impedance matching circuit for receiving and outputting the power; and

a first coupling circuit for receiving the power outputted from the impedance matching circuit, wherein energy of the first coupling circuit is further coupled to the first resonator to provide the first electric energy to the first resonator.

3. The wireless charging module according to claim 2, wherein the power circuit further receives power provided by a computer system via a transmission interface.

4. The wireless charging module according to claim 1, further comprising:

a detecting circuit for determining a coupling amount between the first resonator and the second resonator according to the second electric energy, and triggering a circuit operation event when the coupling amount between the first resonator and the second resonator is substantially higher than a threshold value; and

an indicating circuit for triggering an indicating charge event in response to the circuit operation event.

5. The wireless charging module according to claim 4, wherein the wireless receiving module further comprises:

a second coupling circuit, wherein energy of the second resonator is coupled to the second coupling circuit so that the second coupling circuit receives the second electric energy; and

an impedance matching circuit for receiving and outputting the second electric energy to the detecting circuit.

6. The wireless charging module according to claim 5, wherein the wireless receiving module further comprises:

a rectifying circuit for receiving and rectifying the second electric energy provided by the impedance matching circuit, and providing the rectified second electric energy, wherein the charging circuit further receives the rectified second electric energy to charge the battery.

7. The wireless charging module according to claim 4, wherein the indicating circuit comprises a control circuit and a lighting element, and the control circuit enables the lighting element to emit light and thus generate the indicating charge event in response to the circuit operation event.

8. The wireless charging module according to claim 4, wherein the indicating circuit comprises a control circuit and a sounding element, and the control circuit enables the sounding element to sound and thus generate the indicating charge event in response to the circuit operation event.

9. The wireless charging module according to claim 4, wherein the indicating circuit comprises a control circuit and a vibrating element, and the control circuit enables the vibrating element to vibrate and thus to generate the indicating charge event in response to the circuit operation event.

10. The wireless charging module according to claim 1, wherein the wireless receiving module comprises an electronic apparatus.

11. The wireless charging module according to claim 10, wherein the electronic apparatus comprises an input device.

12. The wireless charging module according to claim 11, wherein the input device comprises a keyboard or a mouse.

13. A wireless charging module, comprising:

a wireless power supplying module, which comprises;

a first resonator, having a first resonance frequency, for receiving first electric energy; and

a wireless receiving module, which comprises;

a body electrically connected to a battery;

a shell;

a second resonator located on an inner wall of the shell and electrically connected to the body, wherein the second resonator has a second resonance frequency substantially the same as the first resonance frequency, the first electric energy of the first resonator is coupled to the second resonator so that non-radiative energy transfer is performed between the first resonator and the second resonator, and the second resonator provides second electric energy; and

a charging circuit for receiving the second electric energy to charge the battery.

14. The wireless charging module according to claim 13, wherein the second resonator comprises a coil located on the inner wall in a manner of surrounding the inner wall of the shell.

15. The wireless charging module according to claim 14, wherein the coil comprises a plurality of coil bodies, the inner wall has a maximum cross-sectional area, the coil bodies are located on the inner wall in a manner of surrounding an outer edge of the maximum cross-sectional area.

16. The wireless charging module according to claim 13, wherein the wireless power supplying module further comprises:

a power circuit for providing power;

an impedance matching circuit for receiving and outputting the power; and

a first coupling circuit for receiving the power outputted from the impedance matching circuit, wherein energy of the first coupling circuit is further coupled to the first resonator to provide the first electric energy to the first resonator.

17. The wireless charging module according to claim 16, wherein the power circuit further receives power provided by a computer system via a transmission interface.

18. The wireless charging module according to claim 13, wherein the wireless receiving module further comprises:

a detecting circuit, coupled to the second resonator, for determining a coupling amount between the first resonator and the second resonator according to the second electric energy, and triggering a circuit operation event when the coupling amount between the first resonator and the second resonator is substantially higher than a threshold value; and

an indicating circuit for triggering an indicating charge event in response to the circuit operation event.

19. The wireless charging module according to claim 18, wherein the wireless receiving module further comprises:

a second coupling circuit, wherein energy of the second resonator is coupled to the second coupling circuit so that the second coupling circuit receives the second electric energy; and

an impedance matching circuit for receiving and outputting the second electric energy to the detecting circuit.

20. The wireless charging module according to claim 19, wherein the wireless receiving module further comprises:

a rectifying circuit for receiving and rectifying the second electric energy provided by the impedance matching circuit, and providing the rectified second electric energy, wherein the charging circuit further receives the rectified second electric energy to charge the battery.

21. The wireless charging module according to claim 18, wherein the indicating circuit comprises a control circuit and a lighting element, and the control circuit enables the lighting element to emit light and thus generate the indicating charge event in response to the circuit operation event.

22. The wireless charging module according to claim 18, wherein the indicating circuit comprises a control circuit and a sounding element, and the control circuit enables the sounding element to sound and thus generate the indicating charge event in response to the circuit operation event.

23. The wireless charging module according to claim 18, wherein the indicating circuit comprises a control circuit and a vibrating element, and the control circuit enables the vibrating element to vibrate and thus to generate the indicating charge event in response to the circuit operation event.

24. A wireless charging module, comprising:

a wireless power supplying module and a wireless receiving module, which respectively comprise;

a first resonator, having a first resonance frequency, for receiving first electric energy; and

a second resonator having a second resonance frequency substantially the same as the first resonance frequency, wherein the first electric energy of the first resonator is coupled to the second resonator so that non-radiative energy transfer is performed between the first resonator and the second resonator, and the second resonator provides second electric energy; and

an electronic apparatus separably coupled to the wireless receiving module, the electronic apparatus comprising;

a body electrically connected to a battery; and

a charging circuit for receiving the second electric energy to charge the battery.

25. The wireless charging module according to claim 24, wherein the electronic apparatus further has a shell and a transmission cable, the body and the charging circuit are located in the shell, an outer surface of the shell has a chamber for selectively accommodating the wireless receiving module, and the charging circuit is electrically connected to the wireless receiving module via the transmission cable.

26. The wireless charging module according to claim 24, wherein the wireless power supplying module further comprises:

a power circuit for providing power;

an impedance matching circuit for receiving and outputting the power; and

a first coupling circuit for receiving the power outputted from the impedance matching circuit, wherein energy of the first coupling circuit is further coupled to the first resonator to provide the first electric energy to the first resonator.

27. The wireless charging module according to claim 26, wherein the power circuit further receives power provided by a computer system via a transmission interface.

28. The wireless charging module according to claim 24, wherein the wireless receiving module further comprises:

a detecting circuit for determining a coupling amount between the first resonator and the second resonator in response to the second electric energy and triggering a circuit operation event when the coupling amount between the first resonator and the second resonator is substantially higher than a threshold value; and

an indicating circuit for triggering an indicating charge event in response to the circuit operation event.

29. The wireless charging module according to claim 28, wherein the wireless receiving module further comprises:

a second coupling circuit, wherein energy of the second resonator is coupled to the second coupling circuit so that the second coupling circuit receives the second electric energy; and

an impedance matching circuit for receiving and outputting the second electric energy to the detecting circuit.

30. The wireless charging module according to claim 29, wherein the electronic apparatus further comprises:

a rectifying circuit for receiving and rectifying the second electric energy provided by the impedance matching circuit, and providing the rectified second electric energy, wherein the charging circuit further receives the rectified second electric energy to charge the battery.

31. The wireless charging module according to claim 28, wherein the indicating circuit comprises a control circuit and a lighting element, and the control circuit enables the lighting element to emit light and thus generate the indicating charge event in response to the circuit operation event.

32. The wireless charging module according to claim 28, wherein the indicating circuit comprises a control circuit and a sounding element, and the control circuit enables the sounding element to sound and thus generate the indicating charge event in response to the circuit operation event.

33. The wireless charging module according to claim 28, wherein the indicating circuit comprises a control circuit and a vibrating element, and the control circuit enables the vibrating element to vibrate and thus to generate the indicating charge event in response to the circuit operation event.

42. The wireless charging module according to claim 30, wherein the electronic apparatus comprises an input device.

34. An electronic apparatus adapted to a wireless charging module, the wireless charging module comprising a first resonator for receiving first electric energy, the first resonator having a first resonance frequency, the electronic apparatus comprising:

a battery;

a second resonator having a second resonance frequency substantially the same as the first resonance frequency, wherein the first electric energy of the first resonator is coupled to the second resonator so that non-radiative energy transfer is performed between the first resonator and the second resonator, and the second resonator provides second electric energy; and

a charging circuit for receiving the second electric energy to charge the battery.

35. The electronic apparatus according to claim 34, wherein the wireless charging module further comprises:

a power circuit for providing power;

an impedance matching circuit for receiving and outputting the power; and

a first coupling circuit for receiving the power outputted from the impedance matching circuit, wherein energy of the first coupling circuit is further coupled to the first resonator to provide the first electric energy to the first resonator.

36. The electronic apparatus according to claim 34, further comprising:

a detecting circuit, coupled to the second resonator, for determining a coupling amount between the first resonator and the second resonator according to the second electric energy, and triggering a circuit operation event when the coupling amount between the first resonator and the second resonator is substantially higher than a threshold value; and

an indicating circuit for triggering an indicating charge event in response to the circuit operation event.

37. The electronic apparatus according to claim 36, further comprising:

a second coupling circuit, wherein energy of the second resonator is coupled to the second coupling circuit so that the second coupling circuit receives the second electric energy; and

an impedance matching circuit for receiving and outputting the second electric energy to the detecting circuit.

38. The electronic apparatus according to claim 37, further comprising:

a rectifying circuit for receiving and rectifying the second electric energy provided by the impedance matching circuit, and providing the rectified second electric energy, wherein the charging circuit further receives the rectified second electric energy to charge the battery.

39. The electronic apparatus according to claim 36, wherein the indicating circuit comprises a control circuit and a lighting element, and the control circuit enables the lighting element to emit light and thus generate the indicating charge event in response to the circuit operation event.

40. The electronic apparatus according to claim 36, wherein the indicating circuit comprises a control circuit and a sounding element, and the control circuit enables the sounding element to sound and thus generate the indicating charge event in response to the circuit operation event.

41. The electronic apparatus according to claim 36, wherein the indicating circuit comprises a control circuit and a vibrating element, and the control circuit enables the vibrating element to vibrate and thus to generate the indicating charge event in response to the circuit operation event.