Samsung Electronics Co., Ltd.

Sungkyunkwan University

Ajou University Industry-academic Cooperation Foundation

Invitroplant Co., Ltd.

Ministry of Agriculture Food and Rural Affairs Animal and Plant Quarantine Agency

Ministry for Food, Agriculture, Forestry and Fisheries, National Veterinary Research and Quarantive Service

Woo-Ram Lee

Se-Ho Park

Joon-Il Kim

Ki-Hyun Kim

Young-Min Lee

Seung-Woo Han

Yu-Su Kim

Sung-Kweon Park

Sung-Bum Park

Hong-Kweun Kim

Jin-Hyoung Park

Kil-Soo Ko

Sung-Ku Yeo

Jeong-Seok Lee

Seok-Myong Kang

Kyu-Jae Jang

Chang-Soo Lee

Sang-min Hyun

Seung-Hyun Lee

Eun Jin Choi

Young-Rim Kim

Yong-Sung Kim

Kyoung-Won Kim

Jong-Chul Hong

Joon-II Kim

Yun-Jeong Noh

Myung-Hee Kwon

Hye-Kyung Shim

Eul-Yong Park

Yu-Chul Chung

Ki-Yoon Kim

Yi-Jung Jung

Jong-Nam Sohn

Jae Young Song

Jin-Yong Lee

Min-Hwa Jeong

Joon-ll Kim

Suk-Chan Lee

Tai-Hyun Kim

Jeong-Sun Kim

Gun-Sup Lee

Yu-Chul Jung

A wireless charging method and apparatus are provided. Identification information is transmitted, through a near field communication antenna, to a wireless power transmitter for an authentication process of the electronic device, if the electronic device is put on the wireless power transmitter for wireless charging and a near field communication controller is in an initial or idle state. Wireless power is received through a wireless power receiving antenna from the wireless power transmitter after the authentication process. Wireless charging is performed through a wireless charging controller by using the received wireless power. It is determined whether the wireless charging is complete. A charging completion signal is transmitted, through the near field communication antenna, to the wireless power transmitter based on the determining.

Wireless charging apparatus and method

An apparatus and a method for are provided for a wireless power receiver. The method includes receiving power from a wireless power transmitter; converting the power in an alternating current (AC) form into a direct current (DC) form and providing the converted power to a battery of the electronic device; measuring a temperature of a point in the wireless power receiver during reception of the wireless power; maintaining an amount of the converted power at a first level if the temperature is lower than a first temperature; decreasing the amount of the converted power to a second level which is lower than the first level if the amount of the converted power is at the first level and the temperature is higher than or equal to the first temperature; stopping providing the converted power to the battery if the temperature is higher than a second temperature; and transmitting, to the wireless power transmitter, a signal including status information of the wireless power receiver device and control information to control the wireless power transmitter.

Method and apparatus for protecting wireless power receiver from excessive charging temperature

An apparatus and a method for are provided for a wireless power receiver. The method includes receiving power from a wireless power transmitter; converting the power in an alternating current (AC) form into a direct current (DC) form and providing the converted power to a battery of the electronic device; measuring a temperature of a point in the wireless power receiver during reception of the wireless power; maintaining an amount of the converted power at a first level if the temperature is lower than a preset temperature; decreasing the amount of the converted power to a second level which is lower than the first level if the amount of the converted power is at the first level and the temperature is higher than or equal to the preset temperature; increasing the amount of the converted power to the first level if the amount of the converted power is at the second level and the temperature is lower than the preset temperature; and transmitting, to the wireless power transmitter, a signal including status information of the wireless power receiver device and control information to control the wireless power transmitter.

An apparatus and a method for are provided for a wireless power receiver. The method includes receiving power from a wireless power transmitter; measuring a temperature of a point in the wireless power receiver during reception of the wireless power; regulating the received power; identifying the temperature at a first time point; maintaining an amount of the regulated power to be provided to a battery with a first level if the identified temperature is lower than a preset temperature; decreasing the amount of the regulated power if the identified temperature is greater than or equal to the preset temperature; in response to decreasing the amount of the regulated power, identifying the temperature at a second time point after the first time point; and increasing the amount of the regulated power to the first level if the identified temperature at the second time point is lower than the preset temperature.

Disclosed is an electronic device including a battery, a case covering the battery, a wireless charging coil positioned between the battery and the case; and a communication antenna positioned between the battery and the wireless charging coil, wherein one of the communication antenna and the wireless charging coil is positioned to surround the other one of the communication antenna and the wireless charging coil, and wherein the communication antenna is spaced from the wireless charging coil by a predetermined distance and prevents interference between the communication antenna and the wireless charging coil.

Electronic device for reducing interference between a charging coil and an antenna

A resonant wireless power reception apparatus includes a wireless near field communication (NFC) antenna for performing an NFC function through an NFC frequency band, a resonator for receiving resonant wireless power using a resonance frequency different from the NFC frequency band, the resonator being installed adjacent to the NFC antenna, and a high impedance circuit for filtering a signal having the NFC frequency band provided from the NFC antenna, the high impedance circuit being connected to the resonator.

Resonance terminal device for resonant wireless power reception system

A cordless charging apparatus includes a housing, a main substrate accommodated in the housing, a coil unit stacked on the main substrate, and a connection member for electrically connecting the coil unit to the main substrate. The connection member includes a connector provided on the main substrate, and a connection substrate provided at the coil unit in order to contact the connector and electrically connect with the coil unit stacked on the main substrate.

Cordless charging apparatus

A wireless charging method and apparatus are provided. A non-contact wireless local communication unit performs non-contact wireless local communication for wireless charging authentication through a non-contact wireless local communication antenna. A wireless power receiver receives supply power from a wireless power transmitter by using a resonator resonating on a resonance frequency equal to that of the wireless power transmitter after the wireless charging authentication. A charging controller performs wireless charging by using the supply power received by the wireless power receiver. One or more switches switch between a connection between the non-contact wireless local communication antenna and the non-contact wireless local communication unit, and a connection between the wireless power receiver and the charging controller.

A wireless power transmission controlling apparatus and method are provided. The apparatus includes a communication unit; and a controller configured to compute an amount of transmission power to be transmitted, based on information received from a wireless power receiving apparatus; output a wireless power transmission control signal corresponding to the computed amount of transmission power; filter the wireless power transmission control signal and pass a harmonic wave corresponding to a predetermined communication frequency band; and control the communication unit to transmit the wireless power transmission control signal based on the harmonic wave.

Method and apparatus for controlling wireless power transmission

An apparatus and a method for protecting a wireless power receiver from excessive temperature caused by charging are provided. The apparatus includes a power receiver configured to receive wireless power in an alternate current (AC) form from a wireless power transmitter; a temperature measurement unit configured to measure a temperature of a point in the wireless power receiver during reception of the wireless power; and a controller configured to decrease a charging power corresponding to the wireless power, if a temperature measured by the temperature measurement unit exceeds a preset temperature, and to provide the charging power to a battery, if the temperature measured by the temperature measurement unit is lower than the preset temperature.

An electronic device is provided. The electronic device includes a battery; a non-contact near field communication antenna; a wireless charging coil; and a case covering the battery, wherein the wireless charging coil is positioned between the battery and the case, and wherein one of the non-contact near field communication antenna and the wireless charging coil is positioned to surround the other one of the non-contact near field communication antenna and the wireless charging coil.

A portable terminal is provided. The portable terminal includes a back surface on which a battery-mounting groove is formed; and a receiving-side resonant antenna arranged around the battery-mounting groove on the body. The receiving-side resonant antenna is arranged parallel to at least three sides of the battery-mounting groove.

Portable terminal having a wireless charging module

A wireless power receiver for wirelessly receiving driving power from a wireless power transmitter and a method for wirelessly receiving charging power at a wireless power receiver from a wireless power transmitter are provided. The wireless power receiver includes a power reception unit configured to wirelessly receive the charging power from the wireless power transmitter; a rectifier configured to rectify the charging power from the power reception unit; a load unit configured to store the rectified charging power from the rectifier; and a controller configured to detect a change of a charging mode for the load unit, and control to adjust an impedance in the power reception unit according to the change of the charging mode.

Wireless power receiver

A shunt capacitor is connected to a wireless charging resonator to prevent harmonics emitted from a power amplifier from radiating to the outside, and at least one circuit having a high impedance relative to a Near Field Wireless Communication (NFC) frequency band is formed at a front side or a rear side of the shunt capacitor for solving the problems of radiating noise components due to wireless charging and of lowering an NFC signal and a power transmission intensity due to a concurrent interference between a wireless charging resonator and an NFC antenna.

Growing community of inventors

Gyeonggi-do, South Korea

Woo-Ram Lee