公开(公告)号：US11171512B2

公开(公告)日：2021-11-09

申请号：US15830416

申请日：2017-12-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyoung-Won Kim ,  Dong-Zo Kim ,  Se-Ho Park ,  Kwang-Seob Kim ,  Chang-Hak O ,  Ju-Hyang Lee ,  Hyung-Koo Chung ,  Se-Hyun Cho

IPC: H02J50/10 ,  H02J7/02 ,  H02J50/80 ,  H02J50/12

Abstract: A method and electronic device for performing wireless charging are provided. The electronic device includes a housing, a conductive coil, a power transmission circuit electrically connected to the conductive coil, and configured to wirelessly transmit power to an outside of the housing through the conductive coil, a voltage source electrically connected to the power transmission circuit, and a control circuit electrically connected between the power transmission circuit and the voltage source. The control circuit is configured to change power radiated through the conductive coil, monitor a frequency of a signal and/or electromagnetic waves radiated through the conductive coil, and adjust a level of a voltage from the voltage source based on at least a part of a monitored result of the frequency.

公开(公告)号：US10978915B2

公开(公告)日：2021-04-13

申请号：US16489012

申请日：2018-02-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kwang-Seob Kim ,  Dong-Zo Kim ,  Ji-Won Kim ,  Keum-Su Song ,  Min-Cheol Ha ,  Jong-Chul Hong ,  Se-Hyun Cho

IPC: H02J50/12 ,  H02J7/02 ,  H02M7/58

Abstract: A wireless power transmission apparatus according to various embodiments of the present invention may comprise: a power provision circuit for providing direct current (DC) power; a first conductive pattern; a second conductive pattern; multiple first switches connected to one end of the first conductive pattern and one end of the second conductive pattern; multiple second switches connected to the other end of the first conductive pattern; multiple third switches connected to the other end of the second conductive pattern; and a control circuit, wherein the control circuit controls the multiple first switches and the multiple second switches to convert the DC power into first alternating current (AC) power and apply the first AC power to the first conductive pattern and control the multiple first switches and the multiple third switches to convert the DC power into second AC power and apply the second AC power to the second conductive pattern. Various other embodiments are possible.

公开(公告)号：US09857412B2

公开(公告)日：2018-01-02

申请号：US14462965

申请日：2014-08-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Se-Hyun Cho ,  Dong-Il Son

IPC: G01R31/14 ,  G01R31/28 ,  G01R31/00

CPC classification number: G01R31/2817 ,  G01R31/002

Abstract: An electronic device and a method for determining a shield state in an electronic device are provided. The method includes at a detecting pad, detecting an electrical signal corresponding to a contact state of a shielding that contacts a ground or the detecting pad, and determining a shield state by the shielding based on the detected electrical signal.