公开(公告)号：US10784708B2

公开(公告)日：2020-09-22

申请号：US16204363

申请日：2018-11-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Woo Lee ,  Hee-Won Jung

IPC: H02J7/00 ,  H02J7/02 ,  H02J50/80 ,  H02J50/12 ,  H02J7/04 ,  H04B5/00 ,  H02J50/40

Abstract: A method for transmitting wireless power in a wireless charging system and a wireless power transmitting unit (PTU) and provided. The method for transmitting wireless power in a wireless charging system includes receiving information related to a voltage from each of a plurality of power receiving units (PRUs); identifying a voltage ratio of each of the plurality of PRUs based on the received information, wherein the voltage ratio is a current voltage relative to a first voltage; determining a PRU among the plurality of PRUs based on the identified voltage ratio; and adjusting transmission power according to a voltage setting value of the determined PRU.

公开(公告)号：US20200185976A1

公开(公告)日：2020-06-11

申请号：US16791631

申请日：2020-02-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyuk-Choon Kwon ,  Nam-Yun Kim ,  Ho-Dong Kim ,  Kang-Ho Byun ,  Kyung-Woo Lee ,  Hee-Won Jung

IPC: H02J50/60 ,  H04B5/00

Abstract: A method and apparatus for controlling a wireless power transmitter configured to transmit power to a wireless power receiver is provided. The method includes receiving a first signal from the wireless power receiver, wherein the first signal comprises load detection indication bits, detecting a change in load of the wireless power transmitter caused by placement of the wireless power receiver in a charging area of the wireless power transmitter, based on the load detection indication bits, and determining whether to transmit a second signal to the wireless power receiver based on detecting the change in load of the wireless power transmitter.

公开(公告)号：US10587123B2

公开(公告)日：2020-03-10

申请号：US15682204

申请日：2017-08-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyuk-Choon Kwon ,  Nam-Yun Kim ,  Ho-Dong Kim ,  Kang-Ho Byun ,  Kyung-Woo Lee ,  Hee-Won Jung

IPC: H02J5/00 ,  H04B5/00 ,  H02J50/60 ,  H02J7/02

Abstract: A method and apparatus for controlling a wireless power transmitter configured to transmit power to a wireless power receiver is provided. The method includes receiving a first signal from the wireless power receiver, wherein the first signal comprises load detection indication bits, detecting a change in load of the wireless power transmitter caused by placement of the wireless power receiver in a charging area of the wireless power transmitter, based on the load detection indication bits, and determining whether to transmit a second signal to the wireless power receiver based on detecting the change in load of the wireless power transmitter.

公开(公告)号：US10454318B2

公开(公告)日：2019-10-22

申请号：US16038843

申请日：2018-07-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Woo Lee ,  Hyuk-Choon Kwon ,  Kang-Ho Byun ,  Hee-Won Jung

IPC: H02J50/40 ,  H02J50/80 ,  H02J50/12 ,  H02J7/02

Abstract: A control method of a wireless power receiving unit for receiving charging power from a wireless power transmitting unit to perform wireless charging is provided. The control method includes receiving the charging power from the wireless power transmitting unit; detecting a change in a wireless charging environment; generating a message notifying of the change in the wireless charging environment; and transmitting the message notifying of the change in the wireless charging environment to the wireless power transmitting unit.

公开(公告)号：US20190288562A1

公开(公告)日：2019-09-19

申请号：US16434974

申请日：2019-06-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kang-Ho Byun ,  Kyung-Woo Lee ,  Young-Min Lee ,  Se-Ho Park ,  Yu-Su Kim ,  Sung-Ku Yeo

IPC: H02J50/12 ,  H02J50/60 ,  H02J50/40 ,  B60L53/12 ,  H02J50/80 ,  H04B5/00 ,  H02J5/00 ,  H02J7/02

Abstract: A method and power transmitter for efficiently controlling power transmission to one or more power receivers in a wireless multi-power transmission system are provided. The method includes performing, when a predetermined measurement cycle arrives, a load measurement; comparing a current load measurement value with a previous load measurement value; determining whether the current load measurement value is increased over the previous load measurement value by at least as much as a first predetermined threshold; gradually increasing, when the load measurement value is increased over the previous load measurement value by at least as much as the first threshold, a transmission power value until a request for a subscription to a wireless multi-power transmission network from a power reception target within a predetermined time limit; and stopping, when the request for the subscription is not received before the time limit is exceeded, power transmission to the power reception target.

公开(公告)号：US10355529B2

公开(公告)日：2019-07-16

申请号：US15346338

申请日：2016-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Woo Lee ,  Eun-Tae Won ,  Young-Min Lee ,  Se-Ho Park ,  Noh-Gyoung Kang ,  Kang-Ho Byun

IPC: H02J50/12 ,  H02J50/20 ,  H02J50/50 ,  H02J50/10 ,  H02J7/02 ,  H04B5/00 ,  H02J7/00 ,  H02J50/80 ,  H02J50/60 ,  H04W48/16 ,  H04W48/20

Abstract: Methods and apparatus are provided for controlling a wireless power receiver for wirelessly receiving power. A drive power for driving the wireless power receiver is received from a wireless power transmitter. A communication network is established with the wireless power transmitter. A wireless power network that is controlled by the wireless power transmitter is joined. A charge power is received from the wireless power transmitter.

公开(公告)号：US10348134B2

公开(公告)日：2019-07-09

申请号：US16042603

申请日：2018-07-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Woo Lee ,  Kang-Ho Byun ,  Ho-Seong Lee ,  Hee-Won Jung

IPC: H01M10/44 ,  H01M10/46 ,  H02J50/12 ,  H02J50/80 ,  H02J50/60 ,  H02J7/02 ,  H04B5/00 ,  H02J5/00 ,  H02J7/00

Abstract: Methods and apparatuses for performing wireless charging are disclosed. One of the disclosed apparatuses is a wireless power receiver which can receive charging power from a wireless power transmitter. When the wireless power receiver receives, through a power receiving circuit, from a wireless power transmitter, a first power for initiating a communication unit; establishes a communication connection with the wireless power transmitter while receiving the first power; performs, by the communication unit, communication with the wireless power transmitter; receives, through the power receiving circuit, from the wireless power transmitter, a second power for charging; transmits, by the communication unit, to the wireless power transmitter, a message indicating a mode transition of the communication unit; terminates the communication with the wireless power transmitter; performs the mode transition for a time period while receiving the second power; and resumes the communication with the wireless power transmitter, after performing the mode transition.

公开(公告)号：US10135283B2

公开(公告)日：2018-11-20

申请号：US13922961

申请日：2013-06-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kang-Ho Byun ,  Kyung-Woo Lee ,  Hyuk-Choon Kwon ,  Nam-Yun Kim ,  Hee-Won Jung

IPC: H02J7/00 ,  H02J7/02 ,  H02J50/90 ,  H02J5/00 ,  H04B5/00 ,  H02J50/40 ,  H02J50/12 ,  H02J50/80

Abstract: Methods and apparatus are provided for controlling power transmission in a power transmitter against overvoltage at a power receiver. The power transmitter receives a subscription request to subscribe to a wireless power network, from the power receiver. It is determined whether power transmission is available for the power receiver. The power receiver is informed that the power transmission is beginning, when the power transmission is available. The transmission power is increased and transmitted. It is determined whether a stop request to stop increasing voltage is received at the power transmitter from the power receiver. The increase of the transmission power is stopped when the stop request is received at the power transmitter. Charging of the power receiver is started by transmitting a start charging command from the power transmitter to the power receiver.

公开(公告)号：US10069348B2

公开(公告)日：2018-09-04

申请号：US14265861

申请日：2014-04-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kang-Ho Byun ,  Kyung-Woo Lee ,  Ho-Seong Lee ,  Hyuk-Choon Kwon ,  Soo-Yeon Jung ,  Hee-Won Jung

IPC: H01F38/00 ,  H02J50/80 ,  H02J7/02 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J17/00 ,  H04B5/00 ,  H04W76/14 ,  H02J7/00 ,  H02J5/00

Abstract: A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter is provided. The control method includes receiving a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, from the wireless power receiver; obtaining information about an identifier of a signal in a communication scheme used by the wireless power receiver; and exchanging signals with the wireless power receiver based on the information about the identifier of the signal in the communication scheme used by the wireless power receiver.

公开(公告)号：US09966802B2

公开(公告)日：2018-05-08

申请号：US13937793

申请日：2013-07-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Woo Lee ,  Kang-Ho Byun ,  Hee-Won Jung

IPC: H02J7/00 ,  H02J50/90 ,  H02J50/60 ,  H02J50/12 ,  H02J50/40 ,  H02J7/02 ,  H02J50/80 ,  G01R31/00

CPC classification number: H02J50/90 ,  G01R31/00 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H02J50/60 ,  H02J50/80

Abstract: A method and apparatus for transmitting charging power to a wireless power receiver. The method includes detecting the wireless power receiver by applying different detection powers with different power levels; applying a driving power to drive the detected wireless power receiver; receiving a request signal for communication from the detected wireless power receiver using the driving power; determining whether or not to subscribe the detected wireless power receiver to a wireless power network; transmitting, to the detected wireless power receiver, a response signal to the request signal for communication, the response signal indicating whether or not the detected wireless power receiver is subscribed to the wireless power network; and transmitting charging power to the detected wireless power receiver, when the detected wireless power receiver is subscribed to the wireless power network.