Power transfer architecture with charging history

• US 9,735,835 B2
• Filed: 12/28/2012
• Issued: 08/15/2017
• Est. Priority Date: 12/28/2012
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Van Der Lee, Reinier, Walley, John
• Primary Examiner(s): Rossoshek, Helen
• Application Number:
  US13/730,456
• Publication Number:
  US 20140184148A1
• Time in Patent Office: 1,691 Days
• Field of Search: 320108, 320142, 320166
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An apparatus and method are disclosed to increase the efficiency of communications between wireless power transfer (WPT) devices. During an initial power transfer and/or communication between WPT devices, characteristics regarding the operation and capabilities of the devices are shared and stored on one or both of the WPT devices. On subsequent power transfers and/or communications, a WPT device can quickly match the capabilities and preferences for the same WPT device. Various systems are presented to generate, access, and implement the stored information to quickly tailor and improve a communication session for a specific WPT device.

Claims

1. A wireless power transfer (WPT) enabled device, comprising:

a driver module configured to provide a power signal for wireless power transfer to a second WPT-enabled device according to default transfer parameters, including a magnetic or electric field of a nominal intensity, associated with an initial power transfer phase; and

a controller module configured to;

store, in a memory, an operating parameter and a unique identifier from the second WPT-enabled device during the initial power transfer phase;

adjust the initial power transfer phase to a refined power transfer phase based on the operating parameter; and

enable the driver module to wirelessly transfer power subsequent to the initial power transfer phase according to updated transfer parameters associated with the refined power transfer phase by correlating the unique identifier with the stored operating parameter of the second WPT-enabled device.

2. The WPT-enabled device of claim 1, wherein the WPT-enabled device is coupled to the second WPT-enabled device via an inductive coupling or a capacitive coupling.

3. The WPT-enabled device of claim 1, wherein the controller module is further configured to refine the initial power transfer phase by adjusting the power signal.

4. The WPT-enabled device of claim 1, wherein the controller module is further configured to refine the initial power transfer phase by adjusting power wirelessly received by the second WPT-enabled device.

5. The WPT-enabled device of claim 1, wherein the operating parameter comprises at least one of:

a wireless charging standard supported by the second WPT-enabled device;

a device type associated with the second WPT-enabled device;

a total amount of power the second WPT-enabled device is capable of wirelessly transmitting;

a total amount of power the second WPT-enabled device is capable of wirelessly receiving;

a total amount of power required by the second WPT-enabled device;

a power level received by the second WPT-enabled device in excess of the total amount of power required by the second WPT-enabled device;

a power level received by the second WPT-enabled device below the total amount of power required by the second WPT-enabled device;

a resonant frequency of a WPT-enabled device coupler or a second WPT-enabled device coupler;

a coupling factor between the WPT-enabled device and the second WPT-enabled device; and

a first WPT-enabled device or a second WPT-enabled device maximum power handling level.

6. The WPT-enabled device of claim 1, wherein the refined power transfer phase comprises:

a more efficient power transfer phase as compared to the initial power transfer phase.

7. The WPT-enabled device of claim 1, wherein the WPT-enabled device is a wireless charger, wherein the second WPT-enabled device is from among a plurality of second WPT-enabled devices, and wherein the controller module is further configured to:

receive a plurality of operating parameters from the plurality of second WPT-enabled devices; and

refine the initial power transfer phase based on the plurality of operating parameters.

8. The WPT-enabled device of claim 7, wherein the plurality of second WPT-enabled devices are substantially concurrently charged, and wherein the controller module is further configured to:

store a session identification based on the plurality of operating parameters; and

wirelessly transfer power according to the refined power transfer phase for power transfers subsequent to the initial power transfer phase, by correlating the session identification to the plurality of second WPT-enabled devices.

9. The WPT-enabled device of claim 1, wherein the controller module is configured to encrypt the operating parameter and the unique identifier.

10. In a wireless power transfer (WPT) enabled device, a method comprising:

receiving an initial configuration record from a second WPT-enabled device indicative of a functionality of the second WPT-enabled device;

initiating a first wireless communication session with the second WPT-enabled device based on default transfer parameters, including a magnetic or electric field of a nominal intensity, associated with the initial configuration record;

receiving an operating parameter from the second WPT-enabled device;

updating the initial configuration record based on the operating parameter to provide an updated configuration record; and

initiating a second wireless communication session with the second WPT-enabled device based on updated transfer parameters associated with the updated configuration record.

11. The method of claim 10, wherein the initiating the first wireless communication session comprises:

performing a non-WPT communication between the WPT-enabled device and the second WPT-enabled device or wirelessly transferring power between the WPT-enabled device and the second WPT-enabled device,

and wherein the initiating the second wireless communication session comprises;

performing a non-WPT communication between the WPT-enabled device and the second WPT-enabled device, or wirelessly transferring power between the WPT-enabled device and the second WPT-enabled device.

12. The method of claim 10, wherein the first and the second wireless communication sessions each include a first wireless power transfer and a second wireless power transfer, respectively, between the first WPT-enabled device and the second WPT-enabled device, and wherein the updating comprises:

updating the initial configuration record such that the second wireless power transfer is more efficient than the first wireless power transfer.

13. The method of claim 10, wherein the receiving the initial configuration record further comprises:

receiving the initial configuration record from the second WPT-enabled device indicative of at least one of;

a wireless charging standard supported by the second WPT-enabled device;

a wireless communication standard supported by the second WPT device;

a WPT frequency;

metal content of the second WPT-enabled device;

WPT capabilities of the second WPT-enabled device;

WPT configurations of the second WPT-enabled device;

wireless communication capabilities of the second WPT-enabled device;

network hosting capabilities of the second WPT-enabled device;

a type of device associated with the second WPT-enabled device;

unique identifier information associated with the second WPT-enabled device;

wireless network configuration information associated with the second WPT-enabled device; and

security information associated with the second WPT-enabled device.

14. The method of claim 10, further comprising:

encrypting the initial configuration record and the updated configuration record.

15. In a first wireless power transfer (WPT) enabled device, a method comprising:

initially communicating with a second WPT-enabled device according to default transfer parameters, including a magnetic or electric field of a nominal intensity, associated with an initial configuration record;

receiving an operational parameter from the second WPT-enabled device;

updating the initial configuration record based on the operational parameter to provide an interaction history record; and

wirelessly communicating with the second WPT-enabled device on subsequent communications based on the interaction history record.

16. The method of claim 15, further comprising:

wirelessly transferring power to the second WPT-enabled device according to an initial power transfer profile, the initial power transfer profile being based on the initial configuration record.

17. The method of claim 16, wherein the wirelessly communicating with the second WPT-enabled device on subsequent communications comprises:

wirelessly transferring power to the second WPT-enabled device according to a refined wireless transfer profile based on the interaction history record, wherein the refined wireless transfer profile is a more efficient wireless transfer profile as compared to the initial power transfer profile.

18. The method of claim 15, wherein the receiving the operational parameter from the second WPT-enabled device comprises:

receiving data indicative of a WPT capability or a non-WPT capability of the second WPT- enabled device as the operational parameter.

19. The method of claim 18, wherein the wirelessly communicating with the second WPT-enabled device on subsequent communications comprises:

communicating with the second WPT-enabled device based on the WPT capability or the non-WPT capability.

20. The method of claim 15, further comprising:

receiving the initial configuration record from the second WPT-enabled device.

21. The method of claim 15, further comprising encrypting the initial configuration record and the interaction history record.