Lg Chem, Ltd

Center for Advanced Meta-materials

Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Kt&g Corporation

Korea Institute of Machinery & Materials

Korea Advanced Institute of Science and Technology

Korea Institute of Science and Technology

Seoul National University

Samyang Corporation

Das Co., Ltd.

Plasmart Inc.

Jae Hyun Kim

Cheol-Hee Park

Shin Hee Jun

Han Nah Jeong

Chee-Sung Park

Hak Joo Lee

Kwang Seop Kim

Bong Kyun Jang

Sang Yun Jung

Eun Kyu Seong

Se Jeong Won

Su Jeong Lee

Jae Jin Kim

Hyun June Jung

Ha Na Lee

Dong Gyun Woo

Sung Uk Park

Yun Hwangbo

Hyun Wook Seong

Cheol Hee Park

Yu Ho Min

Hyun-Wook Seong

Minseok Jeong

Kyung Sik Kim

Byung Ik Choi

Seung Mo Lee

Tae Young Chung

Sang Ho Kim

Hyeong Jun Kim

Bu Gon Shin

Hui Sung Jang

Ju Young Yoon

Jaewook Kim

Chan Soo Kim

Deok Soo Lim

Jee Heon Kim

Min Ji Kim

Sang Young Park

Beom Su Kim

Eun Mi Jeoung

Kyung Moon Ko

Jung Yup Kim

Min Kyoung Kim

Chee Sung Park

Tae Jun Lee

Ryul Lee

Hak-Joo Lee

Jong Jin Park

Jun Hyuk Kwak

Chan Yeup Chung

Joonyeon Chang

Kwon Il Choi

Kyung Moo Shin

Myung Jin Jung

Sang Won Lee

Joon Young Kwak

Kwangseop Kim

Sang Min Kim

Jung Min Park

Ki Young Choi

Seung Kyu Nam

Myong Jo Ham

Eon Seok Lee

Dae Ki Lee

Yun Ju Chang

Tae Jun Kwon

Se Hui Sohn

Ye Seul Lee

Yohan Kim

Seung Min Hyun

Yeon Woo Jeong

Yong Gwan Lee

Sang-Soo Lee

Sanghyun Lee

Hong Chol Rhee

Sun Chul Jin

Seong Min Hong

Min Woo Kweun

Jae Gu Kim

Seung Woo Han

Incheol Bae

Younggwan Kwon

Min Ah Yoon

Hosuk Jung

Hyun Sung Park

Choong Man Moon

YoungBok Sung

Adedoyin Olumuyiwa Aderinwale

Jun Ha Jung

Doori Kim

Chae Un Lee

Duck Yeol Kim

Hyeon Don Kim

Dong Hwa Jeong

Jae Seung Jeong

Mi Jeong Lee

Yongmi Jung

Tae Heon Kim

Disclosed herein is a charger capable of bidirectional power transfer. A power factor compensation circuit converts a multi-phase AC voltage into a DC voltage and includes a plurality of inductors and a plurality of switching elements. The DC voltage converted by the power factor compensation circuit is applied to a DC link capacitor. A bidirectional DC converter bidirectionally converts the magnitude of a voltage between the DC link capacitor and a battery. In DC power supply mode, a controller controls the bidirectional DC converter to convert a magnitude of a voltage of the battery to apply the voltage of the battery to the DC link capacitor and controls the plurality of switching elements to generate a DC supply voltage by converting the magnitude of the DC voltage of the DC link capacitor and output the DC supply voltage through a terminal through which the multi-phase AC voltage is input.

Charger capable of bidirectional power transfer

An embodiment apparatus for an electric vehicle includes an indoor power outlet configured to receive power through one of a plurality of lines except for a single-phase alternating current (AC) charging line among three-phase AC input lines, a sensor configured to measure a required current of an electronic device connected to the indoor power outlet, and a controller configured to control a bidirectional on board charger of the electric vehicle based on the required current.

Apparatus and method for controlling bidirectional on board charger of electric vehicle

Proposed are a stretchable display panel device capable of effectively correcting an image according to a strain ratio and a method of correcting the image. The stretchable display panel device includes a stretchable display panel, a measurement unit, and a correction unit. The measurement unit measures the strain ratio of the stretchable display panel. The correction unit corrects the image on the stretchable display panel on the basis of the strain ratio. The expandable and contractible display panel overall has a uniform strain ratio and has a negative effective Poisson's ratio. The strain ratio is a strain ratio in a first direction.

Stretchable display panel device and image correction method therefor

An electrified vehicle includes an inverter to convert a DC voltage of an input terminal into an AC voltage based on a PWM control signal to output the AC voltage to an output terminal, an inverter controller to control a duty ratio of the PWM control signal in order to adjust a level of the AC voltage to a level of a target voltage, and a battery controller to determine whether an overcurrent is generated based on a maximum instantaneous current output from the output terminal of the inverter in a battery power output mode and terminate the battery power output mode when the overcurrent is generated, determine whether to re-enter the battery power output mode based on the number of overcurrent generations when the battery power output mode is terminated, and set the level of the target voltage in response to the number of overcurrent generations upon re-entering.

Electrified vehicle and method of controlling the same

An embodiment method for controlling a power factor correction circuit includes detecting an AC zero voltage crossing point, detecting a current flowing through an inductor, and reducing a distortion of the current flowing through the inductor by determining a current at the AC zero voltage crossing point as a resistive current, an inductive current, or a capacitive current and controlling each of a plurality of switching elements from a time point when the AC zero voltage crossing point is detected based upon a result of determining the current.

Method and system for controlling power factor correction circuit

An embodiment rehabilitation robot control apparatus includes a brainwave signal measuring device configured to measure a brainwave signal of a user, a preprocessing device configured to preprocess the measured brainwave signal, a classification device configured to classify a motor intention of the user based on the brainwave signal preprocessed by the preprocessing device, and a controller configured to reflect the motor intention of the user in real time to control an operation or a stop of a rehabilitation robot.

Rehabilitation robot control apparatus and method thereof

A carrier substrate includes a base layer, an antireflection layer, and an energy absorption layer, wherein the antireflection layer is formed on one surface of the base layer and allows an elastic wave generated by a first laser beam transmitted through an element adhesively bonded to the antireflection layer to be transmitted through the base layer without being reflected towards the element, the first laser beam being applied to the element through a source substrate of the element, and the energy absorption layer is formed between the base layer and the antireflection layer to be aligned with the element, and evaporates upon energy absorption.

Carrier substrate and element transfer method using the same

Disclosed herein are a metastructure having a zero elastic modulus zone, which can experience constant stress in a predetermined strain zone, and a method for designing the same. The metastructure includes a first unit and a second unit, wherein the first unit has a structure capable of buckling and has a stress-strain relation having a zone corresponding to a negative elastic modulus, the second unit is disposed adjacent to the first unit and has a stress-strain relation having a zone corresponding to a positive elastic modulus, and the metastructure has zero elastic modulus in a predetermined target strain zone through synthesis of the negative elastic modulus of the first unit with the positive elastic modulus of the second unit.

Metastructure having zero elastic modulus zone and method for designing metastructure having zero elastic modulus zone

To output a virtual smoke image, an electronic device may receive a connection request from an aerosol generating device in a state of being paired with one or more external controllers, determine a controller type of the aerosol generating device, suspend pairing with a target external controller among the one or more external controllers when the determined controller type corresponds to a type of the target external controller, perform connection with the aerosol generating device, receive sensing information about a state of the aerosol generating device, generate a virtual smoke image based on the sensing information, and output the virtual smoke image through a display of the electronic device.

Method and apparatus for outputting virtual smoke image

The following embodiments relate to a method of controlling an electronic device to implement virtual smoke in a virtual display device. The method of controlling an electronic device includes predicting a virtual smoke implementation timepoint by monitoring the distance between one side of the electronic device and an object, and transmitting a control signal including the virtual smoke implementation timepoint to a device for displaying a virtual image.

Method and apparatus for implementing virtual smoke

An embodiment of the present disclosure discloses a method of process variation compensating through activation value adjustment of an analog binarized neural network circuit that may recover a decrease in recognition rate performance up to an almost perfect level, even if a binarized neural network is implemented as an analog circuit such that recognition rate performance is decreased due to process variation.

Method for compensating for process variation by means of activation value adjustment in analog binarized neural network circuit, and system therefor

Provided are a graphene preparation apparatus, including: a chamber having a space for preparation of graphene; a first electrode and a second electrode disposed in the chamber to be separated a predetermined distance from each other, the first electrode and the second electrode supporting a catalytic metal and receiving electric current for preparation of the graphene to heat the catalytic metal using Joule heating; additional heaters disposed at opposite sides of the catalytic metal, respectively, and heating the catalytic metal to compensate for a temperature difference between both end regions and a central region of the catalytic metal heated using Joule heating induced by the first electrode and the second electrode; and a current supply unit supplying electric current to the first electrode and the second electrode.

Graphene preparation apparatus using Joule heating and preparation method therefor

An embodiment bidirectional charging system for a vehicle includes a first bridge circuit having a plurality of legs each including two first switching elements connected in series with each other between both ends of a battery, a transformer comprising a plurality of primary-side windings connected to a grid or load side and a plurality of secondary-side windings insulated from the plurality of primary-side windings, a motor including a plurality of input terminals configured to receive a plurality of phase voltages, respectively, a plurality of changeover switches configured to selectively connect connection nodes of the two first switching elements included in the plurality of legs to the plurality of secondary-side windings or to the plurality of input terminals, respectively, and a controller configured to control connection states of the plurality of changeover switches according to a pre-configured operation mode.

Bidirectional charging system for vehicle

A graphene manufacturing device using Joule heating includes: a chamber having a space provided therein so as to synthesize graphene; and a first roller portion and a second roller portion disposed inside the chamber to be spaced from each other such that same support a catalyst metal penetrating the interior of the chamber and are supplied with an electric current for graphene synthesis, thereby Joule-heating the catalyst metal. In order to compensate for a temperature deviation of the catalyst metal passing between the first roller portion and the second roller portion, a first area of the catalyst metal, which is close to the first roller portion, and a second area of the catalyst metal, which is close to the second roller portion, are disposed to have movement paths facing each other.

Graphene manufacturing device and graphene manufacturing method using same

Provided is a graphene production method using Joule heating, including: a catalytic metal placement step in which a catalytic metal is disposed on a pair of electrodes disposed inside a chamber; a gas supply step in which a carbon-containing reaction gas and a carrier gas for transporting the reaction gas are supplied into the chamber; a heating step in which the catalytic metal is rapidly heated to a temperature required for synthesis of graphene; a temperature maintenance step in which the temperature of the catalytic metal is maintained to form the graphene on the catalytic metal; and a cooling step in which the catalytic metal is cooled to prevent local occurrence of hotspots on the graphene formed on the catalytic metal, wherein the heating step, the temperature maintenance step, and the cooling step constitute one cycle of temperature control and the cycle is repeated for a predetermined process time.

Method for producing graphene using joule heating

Growing community of inventors

Daejeon, South Korea

Jae Hyun Kim