Title:
METHOD FOR DETECTING FOREIGN OBJECT USING SENSOR COIL AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/086178
Kind Code:
A1
Abstract:
An electronic device capable of transmitting and receiving wireless power is provided. The electronic device includes a wireless power transfer (WPT) coil, a sensor coil surrounding the WPT coil, and a processor operatively coupled to the WPT coil and the sensor coil. The processor may be configured to control to transmit and receive power by using the WPT coil, perform a ping operation by using the sensor coil, control to measure a waveform of a current or voltage of the sensor coil while or after performing the ping operation using the sensor coil, control to check a Q factor of the sensor coil based on the measured waveform, identify the presence of a foreign object based on the checked Q factor, and control the power transmission using the WPT coil based on a result of the determination of the presence of the foreign object.
Inventors:
PARK SEHO (KR)
Application Number:
PCT/KR2021/014725
Publication Date:
April 28, 2022
Filing Date:
October 20, 2021
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H02J50/60; H02J50/12; H02J50/80; H04L43/00
Foreign References:
| US20200266670A1 | 2020-08-20 | |||
| US20170288458A1 | 2017-10-05 | |||
| US20150145529A1 | 2015-05-28 | |||
| US20180026482A1 | 2018-01-25 | |||
| US20180233966A1 | 2018-08-16 |
Attorney, Agent or Firm:
YOON & LEE INTERNATIONAL PATENT & LAW FIRM (KR)
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