Apparatus, system and method of wireless power transfer

Patent metadata

Field	Value
Publication number	US-2016006289-A1
Application number	US-201414323689-A
Country	US
Kind code	A1
Filing date	Jul 3, 2014
Priority date	Jul 3, 2014
Publication date	Jan 7, 2016
Grant date	—

Abstract

Some demonstrative embodiments include apparatuses, systems and/or methods of wireless power transfer. For example, a Wireless Power Receiver (WPR) may include a rectifier to convert a wireless charging signal received from Wireless Power Transmitter (WPT into a Direct Current (DC) power signal; a voltage regulator to regulate a voltage of the DC power signal according to a voltage range; a bypass path to bypass the voltage regulator; and a bypass controller to select between directing the DC power signal to the voltage regulator or to the bypass path, based on a voltage level of the DC power signal and the voltage range.

First claim

1 . A Wireless Power Receiver (WPR) to receive a wireless charging signal from a Wireless Power Transmitter (WPT), the WPR comprising:
a rectifier to convert said wireless charging signal into a Direct Current (DC) power signal; a voltage regulator to regulate a voltage of said DC power signal according to a voltage range; a bypass path to bypass said voltage regulator; and a bypass controller to select between directing said DC power signal to said regulator or to said bypass path, based on a voltage level of said DC power signal and said voltage range.

2 . The WPR of claim 1 , wherein said bypass controller is to direct said DC power signal to said bypass path, if the voltage level of said DC power signal is within said voltage range.

3 . The WPR of claim 1 , wherein said bypass controller is to direct said DC power signal to said regulator, if the voltage level of said DC power signal is not within said voltage range.

4 . The WPR of claim 1 , wherein said bypass controller is to send to said WPT a request to adjust a power of said wireless charging signal, based on said voltage level and said voltage range.

5 . The WPR of claim 4 , wherein said bypass controller is to send said request to the WPT, if the voltage level of said DC power signal is not within said voltage range.

6 . The WPR of claim 4 , wherein said request comprises said voltage range.

7 . The WPR of claim 4 , wherein said request comprises a request to decrease or to increase the power of said wireless charging signal.

8 . The WPR of claim 4 comprising a communication module to transmit said request to said WPT.

9 . The WPR of claim 8 , wherein said communication module comprises a Bluetooth low energy (BLE) communication module.

10 . A system comprising:
a battery; a battery charger; a Wireless Power Receiver (WPR) to receive from a Wireless Power Transmitter (WPT) a wireless charging signal to charge said battery, the WPR including:
a rectifier to convert said wireless charging signal into a Direct Current (DC) power signal;
a voltage regulator to regulate a voltage of said DC power signal according to a voltage range;
a bypass path to bypass said voltage regulator; and
a bypass controller to select between directing said DC power signal to said regulator or to said bypass path, based on a voltage level of said DC power signal and said voltage range.

11 . The system of claim 10 , wherein said bypass controller is to direct said DC power signal to said bypass path, if the voltage level of said DC power signal is within said voltage range.

12 . The system of claim 10 , wherein said bypass controller is to direct said DC power signal to said regulator, if the voltage level of said DC power signal is not within said voltage range.

13 . The system of claim 10 , wherein said bypass controller is to send to said WPT a request to adjust a power of said wireless charging signal, based on said voltage level and said voltage range.

14 . The system of claim 13 , wherein said bypass controller is to send said request to the WPT, if the voltage level of said DC power signal is not within said voltage range.

15 . The system of claim 13 , wherein said WPR device comprises a communication module to transmit said request to said WPT.

16 . A method comprising:
receiving at a Wireless Power Receiver (WPR) a wireless charging signal from a Wireless Power Transmitter (WPT); converting said wireless charging signal into a Direct Current (DC) power signal; and selecting whether or not to regulate a voltage of said DC power signal according to a voltage range, based on a voltage level of said DC power signal and said voltage range.

17 . The method of claim 16 comprising directing said DC power signal to bypass a voltage regulator, if the voltage level of said DC power signal is within said voltage range.

18 . The method of claim 16 comprising directing said DC power signal to a voltage regulator, if the voltage level of said DC power signal is not within said voltage range.

19 . The method of claim 16 comprising sending to said WPT a request to adjust a power of said wireless charging signal, based on said voltage level and said voltage range.

20 . The method of claim 19 comprising sending said request to the WPT, if the voltage level of said DC power signal is not within said voltage range.

21 . A product including one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement a method comprising:
receiving at a Wireless Power Receiver (WPR) a wireless charging signal from a Wireless Power Transmitter (WPT); converting said wireless charging signal into a Direct Current (DC) power signal; and selecting whether or not to regulate a voltage of said DC power signal according to a voltage range, based on a voltage level of said DC power signal and said voltage range.

22 . The product of claim 21 , wherein said method comprises directing said DC power signal to bypass a voltage regulator, if the voltage level of said DC power signal is within said voltage range.

23 . The product of claim 21 , wherein said method comprises directing said DC power signal to a voltage regulator, if the voltage level of said DC power signal is not within said voltage range.

24 . The product of claim 21 , wherein said method comprises sending to said WPT a request to adjust a power of said wireless charging signal, based on said voltage level and said voltage range.

25 . The product of claim 24 , wherein said method comprises sending said request to the WPT, if the voltage level of said DC power signal is not within said voltage range.

Assignees

• Intel Corp

Inventors

• Sever Isaac
• Yang Songnan
• Ramakrishnan Siva
• Tadros Karim H

Classifications

• H02J7/54

  Passive balancing, e.g. using resistors or parallel MOSFETs · CPC title

• H02J7/42

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

• H02J50/12 Primary

  of the resonant type · CPC title

• H02J50/80

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

• H02J7/025 Primary

  Electricity · mapped topic