SYSTEM, APPARATUS AND METHOD FOR FACILITATING WIRELESS CHARGING OF ONE OR MORE BATTERY-POWERED DEVICES

• US 20170214267A1
• Filed: 11/14/2016
• Published: 07/27/2017
• Est. Priority Date: 01/27/2016
• Status: Active Grant

• Current Assignee: Kwan Hang Mak
• Original Assignee: Kwan Hang Mak
• Inventors: Mak, Kwan Hang
• Granted Patent: US 10,404,092 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/502 the energy repeater being integrated together with the emitter or the receiver
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

Disclosed is a system, apparatus and method for facilitating wireless charging of one or more battery-powered devices. In accordance with the aspects of the system, apparatus and method, one or more first charging coils present in a charging device may generate and emit magnetic flux in response to power supplied to the charging device. Further, a battery cell of one or more battery-powered devices, embedded within the charging device, may include a second charging coil. The second charging coil may receive the magnetic flux emitted based upon a resonant coupling formed between the one or more first charging coils and the second charging coil. The magnetic flux received may induce an electric current within the one or more battery-powered devices. The electric current induced may be utilized for simultaneously charging the battery cell of the one or more battery-powered devices.

Claims

1. A wireless charging system, comprising:

a charging device comprising one or more first charging coils, wherein the one or more first charging coils generates and emits magnetic flux in response to power supplied to the charging device; and

one or more battery-powered devices embedded within the charging device, wherein a battery cell of the one or more battery-powered devices comprises a second charging coil, wherein the second charging coil receives the magnetic flux emitted based upon a resonant coupling formed between the one or more first charging coils and the second charging coil, wherein the magnetic flux received induces an electric current within the one or more battery-powered devices, and wherein the electric current induced is utilized for simultaneously charging the battery cell of the one or more battery-powered devices.

2. The wireless charging system of claim 1, wherein the charging device is in form of a pouch, wherein the power is supplied to the charging device using a power source connected to the charging device via a wired connection.

3. The wireless charging system of claim 1, wherein the one or more battery-powered devices are selected from smartphones, tablet computers, wearable devices and combinations thereof.

4. The wireless charging system of claim 3, wherein the one or more battery-powered devices are loosely coupled with the charging device, and wherein the loose coupling between the one or more battery-powered devices and the charging device enables the second charging coil to orient in random directions within the battery cell thereby deviating the alignment between the one or more first charging coils and the second charging coil.

5. The wireless charging system of claim 4, wherein the resonant coupling enables the magnetic flux generated by the one or more first charging coils and the magnetic flux received by the second coil to resonate at a same frequency and forming a resonated LC circuit.

6. The wireless charging system of claim 5, wherein the efficiency of electric current induced by the magnetic flux received via the resonant coupling is based upon a coupling coefficient and a quality factor between the one or more first charging coils and the second charging coil.

7. The wireless charging system of claim 6, wherein a charging coil of the one or more first charging coils is positioned at a distance from another charging coil of the one or more first charging coils such that the second charging coil is positioned in between the charging coil and the another charging coil, and wherein the second charging coil receives the magnetic flux generated by either of the charging coil or the another charging coil having maximum coupling effect with the second charging coil.

8. The wireless charging system of claim 6, wherein a charging coil of the one or more first charging coils acts an extended charging coil positioned at a larger distance from another charging coil of the one or more first charging coils, wherein the extended charging coil and the another charging coil are magnetically coupled coils having a high quality factor, and wherein the extended charging coil and the another charging coil resonates at a same frequency.

9. The wireless charging system of claim 8, wherein the extended charging coil operates as a resonator capable of enhancing strength of the magnetic flux generated by the another charging coil via a resonance effect, and wherein the magnetic flux, with enhanced strength, is received by the second charging coil thereby enhancing the electric current induced within the one or more battery-powered devices.

10. The wireless charging system of claim 2, wherein the charging device in form of a pouch improves alignment of the one or more battery-powered devices to the charging device when the said one or more battery-powered devices are randomly folded within the charging device.

11. A method for facilitating wireless charging of one or more battery-powered devices, the method comprising:

providing a wireless system comprising a charging device embedded with one or more battery-powered devices, wherein the charging device comprises one or more first charging coils, and wherein the one or more battery-powered devices comprises a second charging coil;

generating and emitting, by the one or more first charging coils, magnetic flux in response to power supplied to the charging device;

receiving, by the second charging coil, the magnetic flux emitted based upon a resonant coupling formed between the one or more first charging coils and the second charging coil; and

inducing, by the second charging coil, an electric current within the one or more battery-powered devices based upon the magnetic flux received, wherein the electric current induced is utilized for simultaneously charging the battery cell of the one or more battery-powered devices.

12. The method of claim 11 further comprising positioning a charging coil of the one or more first charging coils at a distance from another charging coil of the one or more first charging coils such that the second charging coil is positioned in between the charging coil and the another charging coil.

13. The method of claim 12 further comprising receiving, by the second charging coil, the magnetic flux generated by either of the charging coil or the another charging coil having stronger coupling effect with the second charging coil.

14. The method of claim 11 further comprising positioning a charging coil, acting as an extended charging coil, of the one or more first charging coils at a larger distance from another charging coil of the one or more first charging coils, wherein the extended charging coil and the another charging coil are magnetically coupled coils having a high quality factor, and wherein the extended charging coil and the another charging coil resonates at a same frequency.

15. The method of claim 14 further comprising enabling the extended charging coil to operate as a resonator configured for enhancing strength of the magnetic flux generated by the another charging coil via a resonance effect, and wherein the magnetic flux, with enhanced strength, is received by the second charging coil thereby enhancing the electric current induced within the one or more battery-powered devices.

16. A wireless charging apparatus, comprising:

a charging device accommodating one or more battery-powered devices, wherein the charging device further comprises one or more first charging coils, wherein the one or more first charging coils generate and emit magnetic flux in response to power supplied to the charging device, wherein the magnetic flux emitted is received by a second coil present within a battery cell of the one or more battery-powered devices, wherein the magnetic flux received induces an electric current, wherein the electric current induced is utilized for charging the battery cell of the one or more battery-powered devices, wherein the charging device further comprises a display interface for indicating the status of the charging of the battery cell of the one or more battery-powered devices; and

a power source for supplying the power to the charging device and the display interface, wherein the power source is further connected to the charging device via a wired connection.

17. The wireless charging apparatus of claim 16, wherein the one or more battery-powered devices are selected from smartphones, tablet computers, wearable devices and combinations thereof.

18. The wireless charging apparatus of claim 16, wherein the power source is one of a power adaptor or a USB port or a battery pack.

19. The wireless charging apparatus of claim 16, wherein the display interface is a Light Emitting Diode (LED).

20. The wireless charging apparatus of claim 16, wherein the charging device is in form of a pouch, and wherein the charging device improves alignment of the one or more battery-powered devices to the charging device when the said one or more battery-powered devices are randomly folded within the charging device.