APPARATUS AND METHOD FOR RECEIVING WIRELESS POWER

• US 20170324253A1
• Filed: 07/21/2017
• Published: 11/09/2017
• Est. Priority Date: 09/07/2011
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: PARK, Se-Ho, KIM, Ki-Hyun, KIM, Joon-Il, PARK, Jin-Hyoung, LEE, Kyung-Woo, LEE, Woo-Ram
• Application Number:
  US15/656,724
• Publication Number:
  US 20170324253A1
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• 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 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• 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 5/26 using coils
• 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 for controlling wireless power transmission includes a near-field wireless communication antenna for receiving wireless power transmission control signals from a power transmitting device at a communication frequency, a near-field wireless communication Integrated Circuit (IC) for delivering wireless power transmission control messages based on the wireless power transmission control signals received through the near-field wireless communication antenna to a power IC, a Wireless Power Transmission (WPT) coil for resonating at a frequency band corresponding to a resonant frequency of the power transmitting device, to receive power supplied from the power transmitting device, and the power IC for controlling output of a constant voltage, using the supply power received by the WPT coil, based on the wireless power transmission control messages from the near-field wireless communication IC.

Claims

1. A system for transmitting and receiving wireless power, comprising:

a plurality of power receiving devices for receiving wireless power; and

a power transmitting device for transmitting wireless power,

wherein each of the plurality of the power receiving devices comprises;

a Near Field Communication (NFC) antenna for receiving wireless power transmission control signals from the power transmitting device at a communication frequency,

an NFC Integrated Circuit (IC) for delivering wireless power transmission control messages based on the wireless power transmission control signals received through the NFC antenna,

a Wireless Power Transmission (WPT) coil for resonating at a resonant frequency of the power transmitting device, to receive supply power from the power transmitting device, and

a power IC for controlling output of a constant voltage, using the supply power received by the WPT coil based on the wireless power transmission control messages from the NFC IC,

wherein the power transmitting device communicates with the plurality of the power receiving devices by sending queries to the plurality of the power receiving devices based on a master-slave scheme and receiving a report from the plurality of the power receiving devices, and the queries are sent at a predetermined interval of time in order to prevent collisions of transmission and reception in communication between the power transmitting device and the plurality of the power receiving devices,

wherein near-field wireless communication is performed in a 13.56 MHz communication frequency band,

wherein a power transmission frequency band is a 6.78 MHz band or a 100˜

200 KHz band, and

wherein the WPT coil and the NFC antenna are arranged in an oval shape having a same center, with the NFC antenna arranged relatively inside and the WPT coil arranged relatively outside, relative to the oval shape.

2. The system of claim 1, wherein the power transmitting device comprises a transmission controller that calculates an amount of supply power to be transmitted through a transmission resonator based on information received from a power receiving device among the plurality of plurality of power receiving devices during an entire process of wireless power transmission, and controls the wireless power transmission for the calculated amount of the supply power to be transmitted through the transmission resonator.