Battery charging to extend battery life and improve efficiency

• US 8,922,329 B2
• Filed: 05/19/2010
• Issued: 12/30/2014
• Est. Priority Date: 07/23/2009
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Davis, Roy H., Forutanpour, Babak, Stern, Ronen R., Momeyer, Brian
• Primary Examiner(s): Nguyen, Nam V
• Application Number:
  US12/783,441
• Publication Number:
  US 20110018679A1
• Time in Patent Office: 1,686 Days
• Field of Search: 340/3.1, 320/160, 320/108, 320/155, 455/550.1, 455/41.1, 702/63
• US Class Current: 340/3.1
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03

Abstract

Exemplary charging device includes a processor and charging current for coupling to a battery. In an exemplary embodiment, the processor defines charging profiles for charging the battery at different charge rates. A profile can be selected based on a determinable time event and may be modified based on a charging history. Adjustable charging power is supplied to the battery at a power level, a charging duration, or a combination thereof based on the selected profile. A wireless power transmitter can also define charging profiles and charging histories for receivers that receive power from the transmitter based on an identifier from the receiver. The transmitter can select the charging profile based on a determinable time event and may be modified based on a charging history. The transmitter supplies power through the wireless power link at a power level, a charging duration, or a combination thereof based on the selected profile.

Claims

1. An apparatus for wirelessly charging a battery powered device, comprising:

an antenna configured to transmit wireless power; and

a processor operably coupled to the antenna and configured to;

collect a charging history of the battery powered device, the charging history comprising at least one stored charging start time and at least one stored charging stop time, the at least one stored charging start time comprising a first time when the battery powered device is placed within a charging area of the apparatus;

generate at least one of a plurality of charging profiles based at least in part on the charging history;

determine a presence detected time at which a presence of the battery powered device is detected within the charging area of the apparatus; and

select a charging profile from the plurality of charging profiles based on a determination that a charging start time of the battery powered device corresponds to a stored charging start time of the selected charging profile, the charging start time corresponding to the determined presence detected time.

2. The apparatus of claim 1, wherein the at least one charging stop time comprises a second time when the battery powered device is removed from the charging area of the apparatus.

3. The apparatus of claim 1, wherein each of the plurality of charging profiles comprises at least one of a different charging rate, a different current, or a different voltage than each other charging profile of the plurality of charging profiles.

4. The apparatus of claim 1, further comprising a memory, wherein the processor is further configured to store the collected charging history in the memory.

5. The apparatus of claim 1, further comprising a real time clock (RTC), wherein the processor is operably coupled to the real time clock and configured to determine times via the real time clock.

6. The apparatus of claim 1, wherein the charging history comprises a plurality of charging start times and a corresponding plurality of charging stop times or charging durations, wherein each charging start time is paired with its corresponding charging stop time or charging duration in the charging history.

7. The apparatus of claim 6, further comprising a memory and wherein the processor is further configured to:

determine a pattern based on the history of charging;

modify at least one of the plurality of charging profiles based on the determined pattern; and

store the determined pattern and the modified plurality of charging profiles in the memory.

8. The apparatus of claim 1, wherein the processor is further configured to update at least one of the plurality of charging profiles based on a determined pattern of additional history of charging.

9. The apparatus of claim 1, further comprising a user interface operably coupled to the processor, wherein the processor is further configured to process input from a user on the user interface.

10. The apparatus of claim 9, wherein at least one of the charging start time or the charging stop time for at least one charging profile of the plurality of charging profiles is modified or set by the user of the apparatus.

11. The apparatus of claim 1, further comprising a communication element to receive an identifier for the battery powered device, wherein the processor is operably coupled to the communication element and configured to associate the identifier with the charging history of the battery powered device.

12. A method for wirelessly charging a battery powered device, comprising:

collecting a charging history of the battery powered device, the charging history identifying at least one stored charging start time and at least one stored charging stop time, the at least one stored charging start time comprising a first time when the battery powered device is placed within a charging area of the apparatus;

generating at least one of a plurality of charging profiles based at least in part on the charging history;

detecting a presence of the battery powered device within the charging area; and

selecting a charging profile from the plurality of charging profiles based on determining that a charging start time of the battery powered device corresponds to a stored charging start time of the selected charging profile.

13. The method of claim 12, wherein the at least one charging stop time comprises a second time when the battery powered device is removed from the charging area.

14. The method of claim 12, wherein each of the plurality of charging profiles comprises at least one of a different charging rate, a different current, or a different voltage than each other charging profile of the plurality of charging profiles.

15. The method of claim 12, further comprising storing the collected charging history in a memory.

16. The method of claim 12, further comprising determining times via a real time clock (RTC).

17. The method of claim 12, wherein the charging history comprises a plurality of charging start times and a corresponding plurality of charging stop times or charging durations, wherein each charging start time is paired with its corresponding charging stop time or charging duration in the charging history.

18. The method of claim 17, further comprising:

determining a pattern based on the history of charging;

modifying at least one of the plurality of charging profiles based on the determined pattern; and

storing the determined pattern and the at least one modified profile in a memory.

19. The method of claim 12, further comprising updating at least one of the plurality of charging profiles based on a determined pattern of additional history of charging.

20. The method of claim 12, further comprising processing input from a user on a user interface.

21. The method of claim 20, wherein at least one of the charging start time or the charging stop time for at least one charging profile of the plurality of charging profiles is modified or set by the user.

22. The method of claim 12, further comprising receiving an identifier for the battery powered device and associating the identifier with at least one charging profile of the plurality of charging profiles.

23. An apparatus for wirelessly charging a battery powered device, comprising:

means for collecting a charging history of the battery powered device, the charging history comprising at least one stored charging start time and at least one stored charging stop time, the at least one stored charging start time comprising a first time when the battery powered device is placed within a charging area of the apparatus;

means for generating at least one of a plurality of charging profiles based at least in part on the charging history;

means for detecting a presence of the battery powered device within the charging area; and

means for selecting a charging profile from the plurality of charging profiles based on determining that a charging start time of the battery powered device corresponds to a stored charging start time of the selected charging profile.

24. The apparatus of claim 23, wherein the at least one charging stop time comprises a second time when the battery powered device is removed from the charging area.

25. The apparatus of claim 23, wherein each of the plurality of charging profiles comprises at least one of a different charging rate, a different current, or a different voltage than each other charging profile of the plurality of charging profiles.

26. The apparatus of claim 23, further comprising means for storing the collected charging history in a memory.

27. The apparatus of claim 23, wherein the charging history comprises a plurality of charging start times and a corresponding plurality of charging stop times or charging durations, wherein each charging start time is paired with its corresponding charging stop time or charging duration in the charging history.

28. The apparatus of claim 23, further comprising:

means for determining a pattern based on the history of charging;

means for modifying at least one of the plurality of charging profiles based on the determined pattern; and

means for storing the determined pattern and the at least one modified profile in a memory.

29. The apparatus of claim 23, further comprising means for updating at least one of the plurality of charging profiles based on a determined pattern of additional history of charging.

30. The apparatus of claim 23, further comprising means for processing input from a user on a user interface.

31. The apparatus of claim 30, wherein at least one of the charging start time or the charging stop time for at least one charging profile of the plurality of charging profiles is modified or set by the user.

32. The apparatus of claim 23, further comprising means for receiving an identifier from the battery powered device and means for associating the identifier with at least one charging profile of the plurality of charging profiles.