Patents by Inventor Woo-Young Lee

Woo-Young Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190023134
    Abstract: A method for selectively performing a full bridge control and a half bridge control in a WPT system using an LCCL-S resonant network may include: performing the full bridge control by controlling the switches not connected in series of the full bridge inverter to operate simultaneously; calculating a coupling coefficient of the WPT system; determining whether it is possible to switch the full bridge control to the half bridge control based on the calculated coupling coefficient; in response to determining that it is possible to switch the full bridge control to the half bridge control, calculating a load of the WPT system; and performing the half bridge control for the full bridge inverter based on the calculated load.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 24, 2019
    Inventors: Jae Eun Cha, Gyu Yeong Choe, Woo Young Lee, Jong Eun Byun, Min Kook Kim, Sang Joon Ann, Byoung Kuk Lee, Dong Myoung Joo
  • Publication number: 20190023136
    Abstract: An electric vehicle includes: a battery configured to be charged with a first voltage; and a converter configured to boost, when power of a second voltage that is lower than the first voltage is received, the power of the second voltage to the first voltage, and to transfer the first voltage to the battery, so that the battery is charged with power of the first voltage, wherein when the power of the first voltage is received, the power of the first voltage is transferred to the battery to charge the battery.
    Type: Application
    Filed: December 6, 2017
    Publication date: January 24, 2019
    Inventors: Woo Young LEE, Gyu Yeong CHOE, Jung Hong JOO, Dong Sup AHN, Jin Hwan JUNG, Byeong Seob SONG, Sihun YANG
  • Patent number: 10158245
    Abstract: A method and apparatus for controlling an on-board charger (OBC) are provided. The method includes monitoring a voltage of an input power source, increasing or decreasing the voltage of the input power source to a preset output voltage of a power factor corrector (PFC), and operating a converter receiving the preset output voltage to adjust a switching frequency of the converter based on a ripple current of an output terminal of the converter. Additionally, the converter includes a first switch configured to receive a first voltage of a first capacitor mounted within the PFC and a second switch configured to receive a second voltage of a second capacitor mounted within the PFC.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 18, 2018
    Assignee: Hyundai Motor Company
    Inventors: Si Hun Yang, Woo Young Lee, Jun Ho Kim, Young Jin Kim, Jin Myeong Yang, Jin Young Yang
  • Publication number: 20180354374
    Abstract: A system and a method of controlling charge of a vehicle battery are provided. In particular, when a voltage of the vehicle battery is different from an output voltage of a commercially available quick charger, a compatibility problem is solved through a converter, thereby allowing an inverter, an electric motor, and a connector to have increased efficiency and to maximize a reduction in size, weight, and material cost thereof.
    Type: Application
    Filed: October 24, 2017
    Publication date: December 13, 2018
    Inventors: Woo Young Lee, Jin Hwan Jung, Young Jin Kim, Dong Sup Ahn, Byeong Seob Song, Gyu Yeong Choe
  • Publication number: 20180345806
    Abstract: A vehicle battery system and a method of controlling the same are provided. When voltage of the vehicle battery is different from an output voltage of a commercially available quick charger, two high-voltage batteries are connected in parallel during battery charging, and the two high-voltage batteries are connected in series during vehicle driving. Accordingly, a compatibility problem is resolved, thereby allowing an inverter, an electric motor, and a connector to have increased efficiency and to maximize a reduction in size, weight, and material cost thereof.
    Type: Application
    Filed: October 24, 2017
    Publication date: December 6, 2018
    Inventors: Woo Young Lee, Jin Hwan Jung, Young Jin Kim, Dong Sup Ahn, Byeong Seob Song, Gyu Yeong Choe
  • Patent number: 10096989
    Abstract: Provided is a DC current breaker having a high-speed breaking function appropriate to a voltage-type converter and a DC current breaking method. In addition, provided is a DC current breaker and a DC current breaking method capable of reducing cost of the breaker and securing economical competiveness by using a relatively simple configuration.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: October 9, 2018
    Assignee: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE
    Inventors: Woo Young Lee, Sang Hun Park, Ki Dong Song, Hyun Jae Jang, Jin Kyo Chong
  • Patent number: 10084444
    Abstract: Disclosed herein is a gate-driving apparatus configured for stably providing a voltage having a negative value to a gate of a switch, including a SiC (silicon carbide)-based FET (Field Effect Transistor), which requires a negative voltage having a negative value to implement a stable OFF state. The gate-driving apparatus includes a negative-voltage application circuit including a Zener diode and a capacitor connected in parallel to the Zener diode, wherein the Zener diode may have a cathode connected to a secondary coil of a pulse transformer and an anode connected to the gate of the switch.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: September 25, 2018
    Assignee: Hyundai Motor Company
    Inventors: Dae Woo Lee, Jin Myeong Yang, In Yong Yeo, Jin Young Yang, Youn Sik Lee, Byeong Seob Song, Woo Young Lee
  • Patent number: 10071637
    Abstract: A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.
    Type: Grant
    Filed: November 16, 2014
    Date of Patent: September 11, 2018
    Assignees: Hyundai Motor Company, Myongji University Industry and Academia Cooperation Foundation, Kia Motors Corporation
    Inventors: Jong Pil Kim, Seok Joon Kim, Sam Gyun Kim, Woo Young Lee, June Young Lee, Byung Kwon Lee
  • Patent number: 10074789
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: September 11, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation,Yonsei University
    Inventors: Byung Wook Kim, Jong Kook Lee, Han Saem Lee, In Woong Lyo, Jin Woo Kwak, Woo Young Lee, Gwan Sik Kim, Hwi Jong Lee
  • Patent number: 10071640
    Abstract: An integrated module of an OBC and an inverter includes: an OBC primary side circuit and a plurality of transformers converting, when 3-phase alternating current (AC) voltages are received from a fuel station, the 3-phase AC voltages in form and level and transmitting the converted voltages into a secondary side; and an inverter switch turned off in a charge mode in which a high capacity vehicle battery is charged, to rectify an output voltage of a secondary side of each of the plurality of transformers by a body diode included in each switching element for an inverting function.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 11, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jin Myeong Yang, Si Hun Yang, Gyu Yeong Choe, Jin Young Yang, Han Geun Jang, Woo Young Lee
  • Patent number: 10056187
    Abstract: A trans inductor having a powdery magnetic substance and a power converter using the trans inductor are provided. The trans inductor and the power converter reduce peak current flowing in an inverter power module (IGBT), improve inverter efficiency, reduce output RMS current (output effective current) and reduce capacitor consumption by applying a material with properties that are resistant against current saturation instead of a core material of a conventional trans inductor employed in a power converter. Accordingly, an inductance decreasing rate due to core saturation when high current is generated is improved and current flowing in a switch device is prevented from being abruptly increased.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 21, 2018
    Assignee: Hyundai Motor Company
    Inventors: Dae Woo Lee, Si Hun Yang, Jin Young Yang, In Yong Yeo, Byeong Seob Song, Woo Young Lee
  • Patent number: 10056772
    Abstract: Disclosed herein is a wireless charging device including a heat radiation panel having a radiation plate and a radiation fin protruding from an upper surface of the radiation plate; a core section arranged in a region other than the protruding radiation fin, the core section being made of a material having high permeability; and a coil section arranged on the core section so as to come into contact with the protruding radiation fin.
    Type: Grant
    Filed: October 24, 2015
    Date of Patent: August 21, 2018
    Assignee: Hyundai Motor Company
    Inventors: Woo Young Lee, Si Hun Yang, In Yong Yeo, Tae Jong Ha, Gyu Yeong Choe, Hyun Wook Seong
  • Patent number: 10056051
    Abstract: A display apparatus includes a gamma controller configured to determine whether the target pixel unit is driven in both time division method and space division method based on a plurality of comparison values and a reference condition, and an output controller configured to generate normal gamma-data of the target pixel unit using a normal gamma curve if the plurality of comparison values satisfy the reference condition and to generate high gamma-data and low gamma-data of the target pixel unit using a high gamma curve and a low gamma curve in both time division method and space division method if the plurality of comparison values do not satisfy the reference condition.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: August 21, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Eun Jang, Go-Eun Cha, Ji-Hye Choi, Hoi-Sik Moon, Jae-Seok Choi, Shim-Ho Yi, Jong-Hee Na, Woo-Young Lee, Woo-Jin Jung, Kang-Hyun Kim, Jun-Il Park, Jung-Suk Han, Jae-Seob Chung
  • Patent number: 10041045
    Abstract: A bed of microbeads is used as a foundation for reconstructing a three-dimensional osteocyte network by culturing osteocytes within the bed. The osteocytes are cultured such that they form a network among the microbeads that is capable of simulating the osteocyte network of natural bone. The osteocytes are cultured in a microfluidic device adapted for the purpose.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: August 7, 2018
    Assignees: HACKENSACK UNIVERSITY MEDICAL CENTER, THE TRUSTEES OF THE STEVENS INSTITUTE OF TECHNOLOGY
    Inventors: Woo Young Lee, Yexin Gu, Qiaoling Sun, Wenting Zhang, Jenny Zilberberg
  • Publication number: 20180191203
    Abstract: A foreign object detection apparatus using reflected or refracted laser in a wireless power transfer (WPT) system may comprise a laser transmitter disposed on one side of an upper portion of a transmission pad to generate a laser; at least one laser guiding block disposed on one side or the other side of the upper portion of the transmission pad for receiving the laser generated by the laser transmitter and reflecting or refracting the received laser; and a laser receiver for sensing the laser through the at least one laser guiding block.
    Type: Application
    Filed: December 29, 2017
    Publication date: July 5, 2018
    Inventors: Jae Eun CHA, Gyu Yeong CHOE, Woo Young LEE, Byoung Kuk LEE, Min Jung KIM, Dong Myoung JOO, Jong Eun BYUN, Sang Joon ANN
  • Publication number: 20180191204
    Abstract: A foreign object detection apparatus using a mobile laser in a wireless power transfer (WPT) system may comprise a laser transmitting part installed on one side of an upper portion of a transmission pad to generate a laser; a laser receiving part installed on an opposite side to the one side, and receiving the laser generated by the laser transmitting part; and a laser moving part for moving the laser transmitting part and the laser receiving part along the one side or the opposite side of the transmission pad.
    Type: Application
    Filed: January 2, 2018
    Publication date: July 5, 2018
    Inventors: Jae Eun CHA, Gyu Yeong CHOE, Woo Young LEE, Byoung Kuk LEE, Min Jung KIM, Min Kook KIM, Jong Eun BYUN, Sang Joon ANN
  • Publication number: 20180182445
    Abstract: A memory device may include first and second latch sections configured to respectively store a target address and a recent input address, a comparison unit configured to compare an input address with the target address and the recent input address respectively stored in the first and second latch sections, and output a resultant signal, a counting section configured to increase a count corresponding to the recent address stored in the second latch section in response to the resultant signal, and a control unit configured to check the count of the counting section and update the input address to the second latch section in response to the resultant signal.
    Type: Application
    Filed: October 9, 2017
    Publication date: June 28, 2018
    Inventors: Woo-Young LEE, Duck-Hwa HONG, Jung-Hyun KIM, Jae-Hoon CHA, Jeong-Tae HWANG
  • Publication number: 20180175270
    Abstract: Provided herein are a thermoelectric material and a method for preparing the same, wherein the thermoelectric material has excellent thermoelectric performance and high mechanical properties (in particular, fracture toughness), and thus, when the thermoelectric material is applied to a thermoelectric module, the thermoelectric module has excellent performance and efficiency and a long lifespan.
    Type: Application
    Filed: May 25, 2017
    Publication date: June 21, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Byung Wook KIM, Jong Kook LEE, Han Saem LEE, In Woong LYO, Jin Woo KWAK, Woo Young LEE, Gwan Sik KIM, Hwi Jong LEE
  • Publication number: 20180141444
    Abstract: The present disclosure provides a vehicle, a vehicle charging apparatus, vehicle charging system, and a vehicle charging method. The vehicle charging apparatus may include: a first coil; a second coil having one end selectively connected to one end of the first coil, and the other end selectively connected to the other end of the first coil; a third coil having one end selectively connected to one end of the first coil, and the other end selectively connected to the other end of the second coil; and a fourth coil having one end selectively connected to one end of the second coil, and the other end selectively connected to the other end of the first coil, where the fourth coil intersects the third coil.
    Type: Application
    Filed: May 1, 2017
    Publication date: May 24, 2018
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Woo Young LEE, Jin Myeong YANG, Gyu Yeong CHOE, Jun Ho KIM, Inyong YEO, Sihun YANG, JaeEun CHA, Dae Woo LEE, JinYoung YANG
  • Publication number: 20180141457
    Abstract: A vehicle may include a first battery to output power of a first voltage, a second battery to output power of a second voltage, a DC-DC converter to convert the first voltage of the first battery into the second voltage, and to supply the power of the second voltage to the second battery. The DC-DC converter may include a transformer to convert the first voltage into the second voltage, a first switch to control first current input to the transformer from the first battery, a current sensor to measure a value of second current output to the second battery from the transformer, and a controller to turn on/off the first switch based on a set turning-on/off frequency. The controller may delay turning-on/off of the first switch based on the measured value of the second current.
    Type: Application
    Filed: March 20, 2017
    Publication date: May 24, 2018
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Dae Woo Lee, Woo Young Lee, Jun Ho Kim, TAEJONG HA, JaeEun Cha, Jin Myeong Yang, Inyong Yeo