Method, system and apparatus for wireless charging notification

Patent metadata

Field	Value
Publication number	US-10153654-B2
Application number	US-201514978977-A
Country	US
Kind code	B2
Filing date	Dec 22, 2015
Priority date	Dec 22, 2015
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

The disclosure generally relates to methods, system and apparatus to optimize wireless charging by providing user notification when wireless charging efficiency is compromised. In an exemplary embodiment, the charging efficiency value of a device under charge (DUC) is calculated. When the charging efficiency value drops below a predefined threshold, the user is notified to relocate the DUC to a new location with respect to the Power Transmission Unit (PTU) to enhance charging efficiency. In another embodiment, a PTU charging efficiency map is generated to help guide the user for optimal wireless charging.

First claim

What is claimed is:

1. A Power Transmission Unit (PTU) to improve charging efficiency of a Power Receiving Unit (PRU), comprising:
a power amplifier associated to provide electromagnetic output to the PRU;
a communication platform to communicate dynamic parameter characteristics from the PRU, the dynamic parameter characteristics defining one or more of voltage (V rect ) or current (I rect ) received at the PRU;
a processor to calculate a charging efficiency value for the PRU as a function of the dynamic parameter characteristics and the electromagnetic output of the power amplifier, the processor further configured to communicate the charging efficiency value to the PRU.

2. The PTU of claim 1 , wherein the processor is further configured to determine whether the charging efficiency value at the first location is below a predefined threshold and to communicate to a user when the charging efficiency value is below the predefined threshold.

3. The PTU of claim 2 , wherein the processor is further configured to communicate with the user when the charging efficiency value is below the predefined threshold through one or more known devices associated with the user and to direct the user to move the PRU relative a second location proximal to the PTU.

4. The PTU of claim 1 , further comprising a display to communicate charging efficiency information.

5. The PTU of claim 4 , wherein the display is further configured to provide a charging efficiency map of various locations of the PTU.

6. The PTU of claim 4 , wherein the display is further configured to identify PTU locations that provide charging efficiency above and below the threshold.

7. The PTU of claim 1 , further comprising an alarm for sounding a first sound if the charging efficiency value is below the predefined threshold and sounding a second sound if the charging efficiency is above the predefined threshold.

8. The PTU of claim 3 , wherein the communication platform is further configured to direct relocation of the PRU to a second location relative to the PTU when the charging efficiency value at a first location is below the predefined threshold.

9. A non-transitory computer readable medium comprising instructions when executed to cause one or more processor to perform a process comprising:
detecting presence of a Power Receiving Unit (PRU) at a first location proximal to a Power Transmission Unit (PTU);
receiving dynamic parameter characteristics from the PRU, the dynamic parameter characteristics including one or more of voltage or current received at the PRU and characterized by V rect or I rect ;
determining a power output value at the PTU;
calculating charging efficiency value of the PTU as a function of the dynamic parameter characteristics of the PRU and the power output value at the PTU; and
communicating the calculated charging efficiency from PTU to PRU.

10. The medium of claim 9 , wherein the instructions further comprise determining whether the charging efficiency value at the first location is below a predefined threshold and indicating when the overall charging efficiency value is below the predefined threshold.

11. The medium of claim 10 , wherein when the charging efficiency value is below the predefined threshold the instructions further comprise communicating with a user associated with the PRU through one or more known devices associated with the user and directing the user to move the PRU relative to the PTU to a second location.

12. The medium of claim 9 , wherein the instructions further comprise displaying the charging efficiency at the PRU.

13. The medium of claim 9 , wherein the instructions further comprise displaying a charging efficiency map at the PRU or at a device associated with the PRU, the charging efficiency map identifying locations with charging efficiency above or blew the predefined threshold.

14. The medium of claim 9 , wherein the instructions further comprise identifying a plurality of PRUs at different locations relative to the PTU and determining an overall charging efficiency value.

15. The medium of claim 9 , wherein the instruction further comprise sounding a first sound if the charging efficiency value is below the predefined threshold and sounding a second sound if the charging efficiency is above the predefined threshold.

16. A method to improve charging efficiency of a Power Transmission Unit (PTU) configured to charge a Power Receiving Unit (PRU), the method comprising:
detecting presence of the PRU at a first location proximal to the PTU;
receiving dynamic parameter characteristics from the PRU, the dynamic parameter characteristics including one or more of voltage or current received at the PRU and characterized by V rect or I rect ;
determining a power output value at the PTU;
calculating charging efficiency value of the PTU as a function of the dynamic parameter characteristics of the PRU and the power output value at the PTU; and
communicating the calculated charging efficiency from PTU to PRU.

17. The method of claim 16 , further comprising determining whether the charging efficiency value at the first location is below a predefined threshold and indicating to a user when the charging efficiency value is below the predefined threshold.

18. The method of claim 17 , further comprising communicating with the user when the charging efficiency value is below the predefined threshold through one or more known devices associated with the user and directing the user to move the PRU relative a second location proximal to the PTU.

19. The method of claim 16 , further comprising displaying the charging efficiency at the PRU.

20. The method of claim 16 , further comprising displaying a charging efficiency map to the user, the charging efficiency map identifying locations where the charging efficiency value is above or blew the predefined threshold.

21. The method of claim 16 , further comprising identifying a plurality of PRUs at different locations relative to the PTU and determining the overall charging efficiency.

22. The method of claim 16 , further comprising sounding a first sound if the charging efficiency value is below the predefined threshold and sounding a second sound if the charging efficiency is above the predefined threshold.

Assignees

• Intel Corp

Inventors

• Shao Lei
• Lin Xintian E

Classifications

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/80 Primary

  including monitoring or indicating arrangements · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• G01R31/371

  with remote indication, e.g. on external chargers · CPC title

• H02J50/12

  of the resonant type · CPC title