公开(公告)号：US11431206B2

公开(公告)日：2022-08-30

申请号：US17173000

申请日：2021-02-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mincheol Ha ,  Dongzo Kim ,  Hyungkoo Chung

IPC: H02J50/10 ,  H02J50/80 ,  H04W4/80

Abstract: An electronic device includes a coil, and at least one control circuit electrically connected to the coil. The control circuit is configured to transmit power to an external device via the coil by using a first frequency belonging to a first frequency band, receive a packet related with wireless charging from the external device via the coil, in response to having failed to receive the packet within a first reference time, change at least one of an amplitude of the power transmitted or the first frequency used for the transmitting of the power, and to transmit power to the external device via the coil on the basis of the at least one of the changed transmit power or the changed frequency.

公开(公告)号：US11159040B2

公开(公告)日：2021-10-26

申请号：US16594575

申请日：2019-10-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Changhak O ,  Kwangseob Kim ,  Dongzo Kim ,  Mincheol Ha ,  Yongsang Yun

IPC: H02J50/12 ,  H02J7/02 ,  H02J50/80 ,  H02J50/70 ,  H02M7/5387

Abstract: A power control method for wireless charging and an electronic device therefor are provided. The electronic device, includes a coil, an inverter including gate inputs which are electrically connected to the coil, and at least one processor. The at least one processor is configured to control the gate inputs of the inverter in an anti symmetric manner to generate an output power, receive an output power reduction request from an external electronic device, based on receiving the output power reduction request, determine whether a ratio of ON-operations to OFF-operation of the gate inputs of the inverter is less than or equal to a designated ratio, and based on the ratio of ON-operations to OFF-operations of the gate inputs of the inverter being less than or equal to the designated ratio, modulate a phase of a voltage input into the gate inputs of the inverter to generate an output power.

公开(公告)号：US10326298B2

公开(公告)日：2019-06-18

申请号：US15066589

申请日：2016-03-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooram Lee ,  Seho Park ,  Kihyun Kim ,  Jihye Kim ,  Yunjeong Noh ,  Kumjong Sun ,  Mincheol Ha ,  Sangmoo Hwangbo

IPC: H02J7/02 ,  H02J7/04 ,  H02J50/80

Abstract: An electronic device and a method thereof, which supports fast wireless charging, are provided. The electronic device includes a wireless power circuit, and one or more processors which are functionally connected with the wireless power circuit, wherein the one or more processors are configured to execute detecting an external electronic device through the wireless power circuit, determining wireless power information corresponding to the external electronic device, determining whether the external electronic device supports a first charging power or a second charging power, at least partially based on the wireless power information, providing the first charging power to the external electronic device through the wireless power circuit, at least partially based on the determination that the external electronic device supports the first charging power, and providing the second charging power to the external electronic device through the wireless power circuit, at least partially based on the determination that the external electronic device supports the second charging power.

公开(公告)号：US10270276B2

公开(公告)日：2019-04-23

申请号：US15202171

申请日：2016-07-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kihyun Kim ,  Kyungha Koo ,  Wooram Lee ,  Changhyung Lee ,  Jihye Kim ,  Jihong Kim ,  Yunjeong Noh ,  Seho Park ,  Kumjong Sun ,  Ju-Hyang Lee ,  Mincheol Ha ,  Sangmoo Hwangbo

IPC: H02J7/00 ,  H02J7/02 ,  H02J50/80

Abstract: An electronic device is provided. The electronic device includes a housing, a wireless charging coil disposed inside the housing, a fan disposed inside the housing and in proximity to the coil, a temperature sensor disposed inside the housing and in proximity to the coil, a wireless charging circuit having the coil and configured to transmit power wirelessly to an external device via the coil, and a control circuit electrically connected to the fan, the temperature sensor, and the wireless charging circuit. The control circuit may be configured to receive a signal from the external device, receive data related to a temperature of the coil from the temperature sensor, and control the fan at least partially on the basis of at least one of the signal and the data.