WIRELESS POWER TRANSMISSION

• US 20160329753A1
• Filed: 05/03/2016
• Published: 11/10/2016
• Est. Priority Date: 05/03/2015
• Status: Active Grant

• Current Assignee: Powermat Technologies, Ltd.
• Original Assignee: Powermat Technologies, Ltd.
• Inventors: GLUZMAN, ILYA, MACH, ELIESER
• Granted Patent: US 10,491,042 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 50/502 the energy repeater being integrated together with the emitter or the receiver

Abstract

A system for wireless power transmission to an electronic receiver placed in the vicinity of the system comprises a power transmitter and at least one power repeater coupled to the power transmitter. The power repeater is configured to repeat power between the power transmitter and the receiver, wherein the power repeater is tunable to a predetermined frequency, and wherein the power repeater is configured to allow operation at a frequency substantially equal to the frequency of the power transmitter.

Claims

1. A system for wireless power transmission to an electronic receiver placed in the vicinity of the system, the system comprising:

a power transmitter; and

at least one power repeater coupled to the power transmitter, and configured to repeat power between the power transmitter and the receiver,

wherein the at least one power repeater is tunable to a predetermined frequency, and

wherein at least one of the at least one power repeater is configured to allow operation at a frequency substantially equal to the frequency of the power transmitter.

2. The system of claim 1, wherein at least one of the at least one power repeater is also configured to allow operation at a frequency distinctively different from the frequency of the power transmitter.

3. The system of claim 1, wherein the at least one power repeater is positioned at a distance from the power transmitter, this distance providing optimal power transmission conditions.

4. The system of claim 1, wherein the power transmitter further comprises a power supply configured to allow control of required power for the receiver.

5. The system of claim 4, wherein the power transmitter further comprises a frequency controller configured to allow changing the transmitted power frequency.

6. The system of claim 5, wherein the frequency is controlled to correspond with the frequency of the at least one power repeater.

7. The system of claim 5, wherein the transmitted power is controlled with amplitude modulation of the power transmitter.

8. The system of claim 5, wherein at least two power repeaters are coupled to the power transmitter simultaneously, and wherein the power transmitter operates at two substantially different frequencies.

9. A method for wireless power transmission to an electronic receiver, the method comprising:

providing a power transmitter;

wirelessly repeating power between the power transmitter and the receiver; and

controlling the transmitted power by changing the operating frequency of the power transmitter.

10. The method of claim 9, wherein the transmitted power is controlled with amplitude modulation of the power transmitter.

11. The method of claim 9, wherein the transmitted power is further controlled in accordance with the distance between the receiver and the power transmitter.

12. The method of claim 9, wherein the wireless power repeating is performed by at least one power repeater, and the method further comprises positioning the at least one power repeater in a distance from the power transmitter corresponding to provide optimal power transmission conditions.

13. The method of claim 9, wherein the wireless power repeating is performed by at least one power repeater, and the method further comprises pre-tuning the at least one power repeater to distinctively different frequency than the frequency of the power transmitter.

14. The method of claim 13, further comprising performing pinging within the frequency range of the corresponding at least one repeater to stimulate a response in the power transmitter.

15. The method of claim 14, wherein the response changes according to the positioning of the receiver.

16. The method of claim 9, wherein the operating frequency of the power transmitter is controlled to correspond with the frequency of the wireless power repeating.

17. The method of claim 9, wherein the control of the transmitted power corresponds to changes in the operating frequency of the power transmitter.

18. A repeater assembly for wireless power transmission from an existing power transmitter to an electronic receiver placed in the vicinity of the assembly, the repeater assembly comprising:

at least two power repeaters coupled to the power transmitter, and configured to repeat power between the power transmitter and the receiver; and

a housing configured to allow accommodation of the at least two power repeaters, wherein the at least two power repeaters operate at a distinctively different frequency than the frequency of the power transmitter.

19. The repeater assembly of claim 18, wherein the lateral area of the repeater assembly is substantially larger than the lateral area of the power transmitter.

20. The repeater assembly of claim 18, wherein at least two power repeaters are coupled to the power transmitter simultaneously, and wherein the power transmitter operates at two substantially different frequencies.