Wirelessly providing power to a fully discharged battery

Patent metadata

Field	Value
Publication number	US-2016352134-A1
Application number	US-201514725586-A
Country	US
Kind code	A1
Filing date	May 29, 2015
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

Techniques for wireless charging in a system, method, and apparatus are described herein. An apparatus for charging at a wireless power receiver may include logic. The logic is configured to supply voltage received at the wireless power receiver at a first power level to a battery that is initially fully discharged, wherein the power of the first power level is received during a predefined interval of a fully discharged battery protocol. The logic is to monitor a second power level available at the battery, and initiate a wireless handshake with a wireless power transmitter inductively coupled to the wireless power receiver indicating configurations of the wireless power receiver upon detection of the second power level meeting or exceeding a predefined threshold.

First claim

What is claimed is:

1 . An apparatus for charging through a wireless power receiver, comprising logic, at least partially comprising hardware logic, configured to:
supply power received at the wireless power receiver at a first power level to a battery that is initially fully discharged, wherein the power of the first power level is received during a predefined interval of a fully discharged battery protocol; monitor a second power level available at the battery; and initiate a wireless handshake with a wireless power transmitter inductively coupled to the wireless power receiver indicating configurations of the wireless power receiver upon detection of the second power level meeting or exceeding a predefined threshold.

2 . The apparatus of claim 1 , wherein upon completion of the wireless handshake the logic is further configured to supply power received at the wireless power receiver at a third power level to the battery, wherein the third power level is higher than the first power level.

3 . The apparatus of claim 1 , wherein the wireless handshake is an operation performed using available battery power.

4 . The apparatus of claim 1 , wherein the wireless handshake is an operation performed using available battery power and the power of the first power level.

5 . The apparatus of claim 1 , wherein the fully discharged battery protocol is initiated upon detection of a sensor signal at the wireless power transmitter indicating the battery is fully discharged.

6 . The apparatus of claim 5 , wherein the sensor signal is initiated at a touch sensor at the wireless power transmitter.

7 . The apparatus of claim 6 , wherein the predefined interval is configurable by a user based on a predefined interaction at the touch sensor.

8 . The apparatus of claim 5 , wherein the sensor signal is initiated by detecting a presence of near field communication coil associated with the fully discharged battery.

9 . The apparatus of claim 1 , wherein the wireless handshake comprises a Bluetooth Low Energy (BLE) wireless communication.

10 . The apparatus of claim 1 , wherein the wireless handshake comprises a load modulation of power received at the wireless power receiver detected at a controller associated with the wireless power transmitter.

11 . A method for charging in a wireless power receiver comprising:
supplying power received at the wireless power receiver at a first power level to a battery that is initially fully discharged, wherein the power of the first power level is received during a predefined interval of a fully discharged battery protocol; monitoring a second power level available at the battery; and initiating a wireless handshake with the wireless power transmitter inductively coupled to the wireless power receiver indicating configurations of the wireless power receiver upon detection that the second power level meeting or exceeding a predefined threshold.

12 . The method of claim 11 , wherein upon completion of the wireless handshake the method further comprises supplying power received at the wireless power receiver at a third power level to the battery, wherein the third power level is higher than the first power level.

13 . The method of claim 11 , wherein the wireless handshake is an operation performed using available battery power.

14 . The method of claim 11 , wherein the wireless handshake is an operation performed using available battery power and the power of the first power level.

15 . The method of claim 11 , wherein the fully discharged battery protocol is initiated upon detection of a sensor signal at the wireless power transmitter indicating the battery is fully discharged.

16 . The method of claim 15 , wherein the sensor signal is initiated at a touch sensor at the wireless power transmitter.

17 . The method of claim 16 , wherein the predefined interval is configurable by a user based on a predefined interaction at the touch sensor.

18 . The method of claim 15 , wherein the sensor signal is initiated by detecting a presence of near field communication coil associated with the fully discharged battery.

19 . The method of claim 11 , wherein the wireless handshake comprises a Bluetooth Low Energy (BLE) wireless communication.

20 . The method of claim 11 , wherein the wireless handshake comprises a load modulation of power received at the wireless power receiver detected at a controller of the wireless power transmitter.

21 . A system for wireless charging, comprising:
wireless power receiving coil to inductively couple to wireless power transmitting coil; a battery associated with the wireless power receiving coil; a power logic to:
supply power received at the wireless power receiver at a first power level to the battery when it is initially fully discharged, wherein the power of the first power level is received during a predefined interval of a fully discharged battery protocol;
monitor a second power level available at the battery; and
initiate a wireless handshake with a wireless power transmitter inductively couple to the wireless power receiver indicating configurations of the wireless power receiver upon detection that the second power level meeting or exceeding a predefined threshold.

22 . The system of claim 21 , wherein upon completion of the wireless handshake the logic is further configured to supply power received at the wireless power receiver at a third power level to the battery, wherein the third power level is higher than the first power level.

23 . The system of claim 21 , wherein the wireless handshake is an operation performed using:
available battery power; the power at the first power level; or any combination thereof.

24 . The system of claim 21 , wherein the fully discharged battery protocol is initiated upon detection of a sensor signal at the wireless power transmitter indicating the battery is fully discharged.

25 . The system of claim 24 , wherein the sensor signal is initiated at a touch sensor at the wireless power transmitter, wherein the predefined interval is configurable by a user based on a predefined interaction at the touch sensor.

Assignees

• Intel Corp

Inventors

• Pawar Sagar C
• Pillai Prakash

Classifications

• H02J7/90 Primary

  Regulation of charging or discharging current or voltage · CPC title

• H01M10/44

  Methods for charging or discharging (circuits for charging H02J7/00) · CPC title

• H02J50/80

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

• H02J50/10

  using inductive coupling · CPC title

• H02J7/875

  Charging or discharging for charge maintenance, battery initiation or rejuvenation · CPC title