Wireless power transmission scheduling

• US 8,970,180 B2
• Filed: 03/02/2010
• Issued: 03/03/2015
• Est. Priority Date: 04/07/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Li, Peng
• Primary Examiner(s): Muralidar, Richard V
• Application Number:
  US12/715,988
• Publication Number:
  US 20100253281A1
• Time in Patent Office: 1,827 Days
• Field of Search: 320/108, 320/155, 702/63
• US Class Current: 320/155
• CPC Class Codes: H02J 2310/22 The load being a portable electronic device
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• 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 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Exemplary embodiments are directed to wireless power transmission scheduling. A method may include scheduling for transmission of wireless power to one or more chargeable devices of the plurality of chargeable devices positioned within a charging region of a wireless charger based on at least one attribute associated with at least one of the wireless charger and at least one chargeable device of the plurality of chargeable devices.

Claims

1. A wireless charger for charging a plurality of chargeable devices, the wireless charger comprising:

a processor configured to determine a charging schedule for the plurality of chargeable devices based on a dynamic attribute of a battery of a chargeable device of the plurality of chargeable devices positioned within a charging region, the charging schedule comprising a charging time duration for each of the plurality of chargeable devices; and

a transmitter configured to convey wireless power to the plurality of chargeable devices according to the charging schedule.

2. The wireless charger of claim 1, wherein the processor is further configured to determine the charging schedule based on a static attribute associated with the chargeable device.

3. The wireless charger of claim 2, wherein the static attribute identifies at least one of a type of the chargeable device, a model of the chargeable device, a user of the chargeable device, a type of the battery of the chargeable device, a model of the battery, a charging capacity of the battery, and a charging rate function of the battery.

4. The wireless charger of claim 1, wherein the dynamic attribute of the battery of the chargeable device comprises attributes identifying at least one of a state of charge of the battery of the chargeable device, a temperature of the battery, and an age of the battery.

5. The wireless charger of claim 1, wherein the processor is further configured to determine the charging schedule based on an environmental attribute identifying an interference pattern between two or more chargeable devices of the plurality of chargeable devices positioned within the charging region of the wireless charger.

6. The wireless charger of claim 1, further comprising a database configured to store an attribute associated with the chargeable device.

7. The wireless charger of claim 1, wherein the processor is further configured to retrieve an attribute associated with the chargeable device from a remote database.

8. The wireless charger of claim 1, wherein the processor is further configured to derive an attribute associated with the chargeable device from another attribute associated with the chargeable device.

9. The wireless charger of claim 1, wherein the processor is further configured to receive the dynamic attribute from the chargeable device and update the schedule in response thereto while conveying power to the chargeable device.

10. The wireless charger of claim 1, wherein the processor is further configured to determine the charging time duration for each of the plurality of chargeable devices according to a weighted factor assigned to each of the plurality of chargeable devices.

11. The wireless charger of claim 1, wherein the transmitter is configured to convey wireless power via one coil to the plurality of chargeable devices.

12. A method for charging a plurality of chargeable devices, the method comprising:

determining a charging schedule for the plurality of chargeable devices positioned within a charging region of a wireless charger based on a dynamic attribute of a battery of a chargeable device of the plurality of chargeable devices, the charging schedule comprising a charging time duration for each of the plurality of chargeable devices; and

wirelessly transmitting power to the plurality of chargeable devices according to the charging schedule.

13. The method of claim 12, wherein determining the charging schedule is further based on a static attribute identifying at least one of a type of the chargeable device, a model of the chargeable device, a user of the chargeable device, a type of the battery of the chargeable device, a model of the battery, a charging capacity of the battery, and a charging rate function of the battery.

14. The method of claim 12 wherein the dynamic attribute of the battery of the chargeable device comprises attributes identifying at least one of a state of charge of the battery of the chargeable device, a temperature of the battery, and an age of the battery.

15. The method of claim 12, wherein determining the charging schedule is further based on an environmental attribute identifying an interference pattern between two or more chargeable devices of the plurality of chargeable devices positioned within the charging region of the wireless charger.

16. The method of claim 12, wherein determining the charging schedule is further based on a configurable attribute identifying at least one of a user priority level associated with the chargeable device and a device priority level associated with the chargeable device.

17. The method of claim 12, further comprising:

retrieving an attribute associated with the chargeable device from the chargeable device.

18. The method of claim 12, wherein wirelessly transmitting power to the plurality of chargeable devices comprises wirelessly transmitting power via one coil.

19. The method of claim 12, further comprising:

assigning a weighted factor to each of the plurality of chargeable devices; and

determining an order in which to charge each of the plurality of chargeable devices according to the weighted factor assigned to each chargeable device.

20. The method of claim 12, further comprising:

assigning a priority level to each of the plurality of chargeable devices; and

determining an order in which to charge each of the chargeable devices according to the priority level assigned to each chargeable device.

21. A wireless charger for charging a plurality of chargeable devices, the wireless charger comprising:

means for determining a charging schedule for the plurality of chargeable devices bases on a dynamic attribute of a battery associated with a chargeable device of the plurality of chargeable devices positioned within a charging region of a wireless charger, the charging schedule comprising a charging time duration for each of the plurality of chargeable devices; and

means for conveying wireless power to the plurality of chargeable devices according to the charging schedule.

22. The charger of claim 21, wherein the means for conveying wireless power comprises one coil.

23. A method, comprising:

determining a desired charging parameter for a chargeable device according to a dynamic attribute of a battery associated therewith, the desired charging parameter is determined from at least one of a rate of charge, a charging duration, or a maximum rate of charge; and

transmitting a charging request from the chargeable device to a wireless charger requesting a charge in accordance with the desired charging parameter, the charging request comprising a validity time duration during which the charging request is valid.

24. A chargeable device, comprising:

a processor configured to determine a desired charging parameter according to a dynamic attribute of a battery of the chargeable device, the desired charging parameter is determined from at least one of a rate of charge, a charging duration, or a maximum rate of charge; and

a transmitter configured to transmit a charging request to a wireless charger requesting a charge in accordance with the desired charging parameter, the charging request comprising a validity time duration during which the charging request is valid.

25. The chargeable device of claim 24, wherein the desired charging parameter is determined from at least two of a rate of charge, a charging duration, and a maximum rate of charge.

26. The chargeable device of claim 25, wherein the processor is further configured to retrieve an attribute related to the battery from a remote database.

27. A non-transitory computer-readable media storing instructions that when executed by a processor cause the processor to perform a method, the method comprising:

determining a charging parameter for a chargeable device based on a dynamic attribute of a battery of the chargeable device;

transmitting a charging request from the chargeable device to a wireless charger requesting a charge in accordance with the charging parameter, the charging request comprising a validity time duration during which the charging request is valid; and

scheduling for transmission of wireless power to a chargeable device of a plurality of chargeable devices based on a dynamic attribute of a battery of the chargeable device.

28. The computer-readable media of claim 27, wherein the charging parameter comprises at least one of a rate of charge, a charging duration, and a maximum rate of charge.

29. A chargeable device, comprising:

means for determining a charging parameter according to an attribute associated therewith; and

means for transmitting a charging request to a wireless charger requesting a charge in accordance with the charging parameter, the charging request comprising a validity time duration during which the charging request is valid.

30. The chargeable device of claim 29, wherein the charging parameter comprises at least one of a rate of charge, a charging duration, and a maximum rate of charge.