Energy delivery modulation in wireless power delivery environments

• US 10,284,020 B2
• Filed: 05/01/2017
• Issued: 05/07/2019
• Est. Priority Date: 06/30/2015
• Status: Active Grant

• Current Assignee: Ossia, Inc.
• Original Assignee: Ossia, Inc.
• Inventors: Zeine, Hatem, Mayes, Dale, Renneberg, Benjamin, Alfarra, Anas
• Primary Examiner(s): Deberadinis, Robert L
• Application Number:
  US15/583,121
• Publication Number:
  US 20170237298A1
• Time in Patent Office: 736 Days
• CPC Class Codes: G05B 11/01 electric
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge

Abstract

Techniques are described for accumulating data regarding the charging environment and power delivery efficiency at various regions in the environment under various transmission conditions. In some embodiments, this data may be utilized to generate efficient and sophisticated power transmission schedules; however, this data may also be leveraged for the manipulation of the standing waves within the environment. This allows for two discrete and powerful applications: creation of null zones and conversely the generation of high power regions. These regions may also be referred to as ‘power nulls’ and ‘energy balls’ respectively.

Claims

1. A wireless power transmission system comprising:

an adaptively-phased antenna array having a plurality of radio frequency (RF) transceivers;

control circuitry adapted to;

collect data regarding power delivery efficiency at multiple locations within a multipath wireless power delivery environment under various transmission conditions;

generate at least one virtual map of the multipath wireless power delivery environment based on the collected data;

identify one or more energy modification regions on the virtual map; and

direct one or more of the plurality of RF transceivers to transmit wireless power to wireless power receiver clients in the multipath wireless power delivery environment according to a wireless power delivery schedule while concurrently modifying energy at one or more physical areas within the multipath wireless power delivery environment that correspond to the one or more energy modification regions.

2. The wireless power transmission system of claim 1, wherein at least one of the one or more energy modification regions comprises a reduced energy region, and wherein modifying the energy at the reduced energy region comprises reducing energy within a corresponding physical area of the multipath wireless power delivery environment.

3. The wireless power transmission system of claim 2, wherein reducing energy within the corresponding physical area of the multipath wireless power delivery environment comprises redirecting or eliminating a wireless power delivery path that traverses the physical area.

4. The wireless power transmission system of claim 2, wherein reducing energy within the corresponding physical area of the multipath wireless power delivery environment comprises generating one or more radio frequency waves that destructively interfere with radio frequency waves emitted from the physical area.

5. The wireless power transmission system of claim 1, wherein at least one of the one or more energy modification regions comprises an increased energy region, and wherein modifying the energy at the increased energy region comprises increasing energy within a corresponding physical area of the multipath wireless power delivery environment.

6. The wireless power transmission system of claim 5, wherein the wireless power delivery schedule includes the physical area of the multipath wireless power delivery environment corresponding to the increased energy region.

7. The wireless power transmission system of claim 1, wherein the control circuitry is further adapted to:

generate the wireless power delivery schedule,

wherein the wireless power delivery schedule identifies wireless power receiver clients within the wireless power delivery environment to which wireless power is provided sequentially.

8. The wireless power transmission system of claim 1, wherein at least one of the one or more energy modification regions is determined by user configuration.

9. The wireless power transmission system of claim 1, further comprising:

an interface adapted to provide a visual representation of the virtual map to a user and receive selections of the one or more regions on the virtual map.

10. The wireless power transmission system of claim 9, wherein a user can indicate the at least one of the one or more energy modification regions by selecting one or more regions on the virtual map via the interface.

11. The wireless power transmission system of claim 1, wherein the control circuitry directs the plurality of RF transceivers to transmit the wireless power to the wireless power receiver clients over multiple wireless power delivery paths that constructively interfere at or near the wireless power receiver clients.

12. The wireless power transmission system of claim 1, wherein the multiple transmission conditions include multiple phase and amplitude settings for each of multiple antennas of the wireless power transmission system.

13. The wireless power transmission system of claim 1, wherein the at least one virtual map comprises a probabilistic map of likely radio frequency amplitude at each location within the environment.

14. The wireless power transmission system of claim 1, wherein the control circuitry is further adapted to:

identify the one or more physical areas within the multipath wireless power delivery environment that correspond to the one or more energy modification regions.

15. A method comprising:

collecting power delivery efficiency data at multiple locations within a multipath wireless power delivery environment under various transmission conditions;

generating at least one virtual map of the multipath wireless power delivery environment based on the collected data;

identifying one or more energy modification regions on the virtual map;

identifying one or more physical areas within the multipath wireless power delivery environment that correspond to the one or more energy modification regions; and

directing one or more of a plurality of RF transceivers to transmit wireless power to wireless power receiver clients in the multipath wireless power delivery environment according to a wireless power delivery schedule while concurrently modifying energy at one or more physical areas.

16. The method of claim 15, wherein at least one of the one or more energy modification regions comprises a reduced energy region, and wherein modifying the energy at the reduced energy region comprises reducing energy within a corresponding physical area of the multipath wireless power delivery environment.

17. The method of claim 16, wherein reducing energy within the corresponding physical area of the multipath wireless power delivery environment comprises one or more of:

redirecting or eliminating a wireless power delivery path that traverses the physical area or generating one or more radio frequency waves that destructively interfere with radio frequency waves emitted from the physical area.

18. The method of claim 15, wherein at least one of the one or more energy modification regions comprises an increased energy region, and wherein modifying the energy at the increased energy region comprises increasing energy within a corresponding physical area of the multipath wireless power delivery environment.

19. The method of claim 15, further comprising:

generating the wireless power delivery schedule, wherein the wireless power delivery schedule identifies wireless power receiver clients within the wireless power delivery environment to which wireless power is provided sequentially.

20. A wireless power transmission system comprising:

antenna means for transmitting wireless power to wireless power receiver clients in a wireless power delivery environment;

control and processing means for;

collecting power delivery efficiency data at multiple locations within a multipath wireless power delivery environment under various transmission conditions;

generating at least one virtual map of the multipath wireless power delivery environment based on the collected data;

identifying one or more energy modification regions on the virtual map; and

directing one or more of the plurality of RF transceivers to transmit wireless power to wireless power receiver clients in the multipath wireless power delivery environment according to a wireless power delivery schedule while concurrently modifying energy at one or more physical areas.