WIRELESS SOUND POWERING OF ELECTRONIC DEVICES WITH SELECTIVE DELIVERY RANGE

• US 20150326026A1
• Filed: 05/08/2014
• Published: 11/12/2015
• Est. Priority Date: 05/10/2013
• Status: Abandoned Application

• Current Assignee: Energous Corporation
• Original Assignee: Energous Corporation
• Inventors: Leabman, Michael A.
• Application Number:
  US14/273,253
• Publication Number:
  US 20150326026A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/15 using ultrasonic waves
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

The present disclosure describes a methodology for wireless sound power transmission based on pocket-forming. This methodology may include one transmitter and at least one or more receivers, being the transmitter the sender of energy and the receiver connected to an electronic device that is desired to charge or power. The transmitters power devices within a predefined range. This configuration may be beneficial in retail store settings where improved interactivity between users and devices is required. In addition, the configuration provides a safety feature to avoid unauthorized usage of electronic devices. A variation of this configuration is given in an academic setting where electronic devices utilized for learning are required to stay within school premises.

Claims

1. A method for wireless power transmission to an electronic device, comprising:

connecting a pocket-forming transmitter to a power source;

generating SW waves from a SW circuit embedded within the transmitter;

controlling the generated SW waves with a digital signal processor in the transmitter;

transmitting the SW waves through transducer elements connected to the transmitter within a predefined range; and

capturing the SW waves forming pockets of energy converging in 3-D space at a receiver with sensor elements connected to the electronic device within the predefined range to convert the pockets of energy into a DC voltage for charging or powering the electronic device.

2. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the transmitter and receiver include communication circuitry for transferring information between the transmitter and receiver.

3. The method for wireless power transmission to an electronic device within a predefined range of claim 2, further includes the step of communicating information between the transmitter and receiver through the communication circuitry to identify the device, a user, a battery level, a location or other such information of each electronic device within the predefined range.

4. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the receiver or the electronic device includes a capacitor having a storage capacity for powering the electronic device whenever the electronic device is within the predefined range of the transmitter and for powering the electronic device only for a limited predetermined period of time whenever the electronic device is out of the predefined range of the transmitter.

5. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the transmitter identifies each electronic device within the predefined range and delivers power to each approved electronic device through pocket-forming but disables, locks out and removes power from each electronic device when the approved electronic device is moved out of the range of the transmitter for security reasons.

6. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the transmitter identifies each receiver requesting power and then only powers approved electronic devices within the predefined range of the transmitter.

7. The method for wireless power transmission to an electronic device within a predefined range of claim 4, wherein the receiver and capacitor providing an operating voltage to the electronic device eliminates the need for a battery to power the electronic device within the predefined range of the transmitter.

8. The method for wireless power transmission to an electronic device within a predefined range of claim 3, wherein the communication circuitry uses standard wireless communication protocols such as Bluetooth, Wi-Fi, Zigbee or FM radio between the transmitter and receiver.

9. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the transducer elements in the transmitter and receiver operate in the frequency bands of 10 KHz to 50 KHz.

10. The method for wireless power transmission to an electronic device within a predefined range of claim 1, further includes the step of generating multiple pockets of energy from the pocket-forming transmitter to power or charge multiple, approved electronic devices in an educational setting within the predefined range of the transmitter.

11. The method for wireless power transmission to an electronic device within a predefined range of claim 10, wherein the electronic devices in the educational setting are tablets, electronic readers, laptops, virtual glasses or smartphones provided wireless power through pocket-forming whenever in range of the transmitter but disabled whenever outside of the predefined range of the transmitter.

12. The method for wireless power transmission to an electronic device within a predefined range of claim 1, further comprising the step of communicating between the receiver and the transmitter through the communication signals or pilot signals on conventional wireless communication protocols including Bluetooth, Wi-Fi, Zigbee or FM radio signals.

13. The method for wireless power transmission to an electronic device within a predefined range of claim 1, wherein the communication signals sent by the receiver to the transmitter provide optimum times and locations for transmitter pocket-forming and the convergence of pockets of energy in 3-D space to predetermined receivers of approved electronic devices within the predefined range of the transmitter.

14. A wireless device for transmission of power to an electronic device, comprising:

a pocket-forming transmitter for emitting SW waves to form pockets of energy converging in 3-d space connected to a power source; and

a receiver embedded or attached to the electronic device for receiving and converting the pockets of energy to a DC voltage for charging or powering the electronic device within a predefined range of the transmitter.

15. The wireless device for transmission of power to an electronic device of claim 14, wherein the transmitter and receiver include communication circuitry for transferring information between the transmitter and receiver.

16. The wireless device for transmission of power to an electronic device of claim 15, wherein the information communicated between the transmitter and receiver through the communication circuitry identifies the electronic device, a user, a battery level, a location of the electronic device or such other information for each electronic device within the predefined range.

17. The wireless device for transmission of power to an electronic device of claim 14, wherein the receiver or the electronic device includes a capacitor having a storage capacity for powering the electronic device whenever the electronic device is within the predefined range of the transmitter and for powering the electronic device only for a limited predetermined period of time whenever the electronic device is out of the predefined range of the transmitter.

18. The wireless device for transmission of power to an electronic device of claim 15, wherein the receiver and capacitor providing an operating voltage to the electronic device eliminates the need for a battery to power the electronic device within the predefined range of the transmitter.

19. An apparatus for wireless power transmission to an electronic device, comprising:

a pocket-forming transmitter having at least two or more transducer elements, at least one SW integrated circuit, at least one digital signal processor or micro-controller and a communication circuit for generating controlled SW waves to form pockets of energy consisting of constructive interference patterns of the generated SW waves to converge in 3-D space at predetermined locations; and

a rollable electronic paper display having flexible organic light emitting diodes, at least one embedded receiver and capacitor for receiving the pockets of energy converging in 3-D space at the receiver for storing charging power for the paper display.

20. The apparatus for wireless power transmission to an electronic device of claim 19, wherein the transmitter and receiver include communication circuitry utilizing Bluetooth, infrared, Wi-Fi, FM radio or Zigbee signals for the communication protocols between the receiver and the transmitter.

21. The apparatus for wireless power transmission to an electronic device of claim 19, wherein the rollable electronic paper display includes a flat panel display for use in mobiles devices, laptops, PDAs, watches and other devices requiring flat, thin displays.

22. The apparatus for wireless power transmission to an electronic device of claim 19, wherein the receiver with the capacitor replaces a need for a battery in the rollable electronic paper display.

23. The apparatus for wireless power transmission to an electronic device of claim 20, wherein the receiver in the rollable electronic paper display and the transducer elements of the transmitter operate in independent frequencies that allow a multichannel operation of pocket-forming in a single array, pair array, quad array or other suitable arrangement for powering the rollable electronic paper display whenever in range of the transmitter.

24. The apparatus for wireless power transmission to an electronic device of claim 19, wherein the receiver or the rollable electronic paper display includes a capacitor having a storage capacity for powering the rollable electronic paper display whenever the rollable electronic paper display is within the predefined range of the transmitter and for powering the rollable electronic paper display only for a limited predetermined period of time whenever the rollable electronic paper display is out of the predefined range of the transmitter.