Patents by Inventor Chang-Gi Jung

Chang-Gi Jung 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: 20240157792
    Abstract: An apparatus for controlling a vehicle according to an embodiment of the present disclosure includes: a processor; a memory storing one or more programs configured to be executed by the processor; and the one or more programs include instructions for: a first determination unit configured to determine whether the vehicle is in a driving state; a first controller configured to deactivate a touch mode of the touch panel provided in the digital side mirror system when the vehicle is determined to be in the driving state; a second determination unit configured to determine whether the vehicle is in a switch mode for controlling the function of the vehicle through the operating switch; and a second controller configured to control a driver to perform a function from a menu selected through the operating switch when the vehicle is determined to be in the switch mode.
    Type: Application
    Filed: July 5, 2023
    Publication date: May 16, 2024
    Inventors: Chang Woo Sohn, Byeong Kwan Kim, Soo Man Jung, Choon Gi Jung, Mu Youl Lee, Chul Jung, Woo Young Chung, Seok Keon Kwon
  • Publication number: 20240126169
    Abstract: Provided is a photosensitive resin composition including a reactive unsaturated compound, an alkali soluble resin, an initiator, and a pigment. The reactive unsaturated compound is selected to cause the composition to exhibit high-resolution pattern properties that facilitate forming a pixel defining film in a display device. The reactive unsaturated compound may be an acryl-based compound having at least three ethylenically unsaturated double bond groups in molecules and having a viscosity of about 200 mPa s to about 280 mPa s at 40° C. A display device including such pixel defining film is also presented.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 18, 2024
    Inventors: YANG-HO JUNG, BUM SUNG LEE, CHANG MIN LEE, JUN BAE, NAKCHO CHOI, HOON KANG, DAE-GI KWEON, JUNGI KIM, JIHEE KIM, JUNHO SIM, JAEHUN LEE
  • Patent number: 11527900
    Abstract: An apparatus and a method for managing a battery are based upon degradation determination of the battery. The method includes determining a charging method when starting charging of a battery, storing at least one of a charge voltage, charge current, and temperature when starting charging of the battery, and when the determined charging method is constant current (CC) charging, determining a state of health (SOH) of the battery by comparing an increase in charge capacity of the battery with respect to an increase in charge voltage of the battery with a CC-section SOH mapping table, or when the determined charging method is constant voltage (CV) charging, determining the SOH of the battery by comparing at least one of an increase in the charge capacity of the battery and a charge time of the battery with a CV-section SOH mapping table.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: December 13, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Dong Rak Kim, Jae Rok Kim, Chang Gi Jung, Seoung Mun Back
  • Publication number: 20200335979
    Abstract: Provided are an apparatus and method for managing a battery. The method includes determining a charging method when starting charging of a battery, storing at least one of a charge voltage, charge current, and temperature when starting charging of the battery, and when the determined charging method is constant current (CC) charging, determining a state of health (SOH) of the battery by comparing an increase in charge capacity of the battery with respect to an increase in charge voltage of the battery with a CC-section SOH mapping table, or when the determined charging method is constant voltage (CV) charging, determining the SOH of the battery by comparing at least one of an increase in the charge capacity of the battery and a charge time of the battery with a CV-section SOH mapping table.
    Type: Application
    Filed: April 16, 2020
    Publication date: October 22, 2020
    Inventors: Dong Rak KIM, Jae Rok KIM, Chang Gi JUNG, Seoung Mun BACK
  • Patent number: 9108521
    Abstract: A battery control apparatus includes an emergency charging unit including an external charging terminal for applying power to a main battery pack, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; an auxiliary battery connection unit including an auxiliary battery connection terminal for applying power to the vehicle through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and an emergency control unit for switching to an emergency charging mode or an auxiliary connection mode by turning on the emergency charging switch or the auxiliary battery switch during the voltage measurement of the first or second voltage measurement unit.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: August 18, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Chang-Gi Jung, Hyung-Ju Ahn
  • Patent number: 8639460
    Abstract: An apparatus for estimating an OCV of a battery includes a voltage sensing unit for measuring a battery output voltage; a temperature sensing unit for measuring a battery temperature; a data storing unit for periodically receiving the battery output voltage and temperature data from the sensing units and storing the data in a memory; an OCV variation estimating unit for calculating an OCV variation from a varying pattern of battery output voltages measured in the past and at the present, stored in the memory, by applying a mathematical model defining a correlation between the varying pattern and the OCV variation, and estimating an OCV at a current stage by reflecting a correction factor corresponding to the battery temperature on the calculated OCV variation; and an OCV estimating unit for estimating an OCV at the current stage by reflecting the estimated OCV variation on the OCV estimated at a last stage.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: January 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jung-Soo Kang, Do-Youn Kim, Chang-Gi Jung, Do-Yang Jung
  • Publication number: 20140002026
    Abstract: A battery control apparatus includes an emergency charging unit including an external charging terminal for applying power to a main battery pack, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; an auxiliary battery connection unit including an auxiliary battery connection terminal for applying power to the vehicle through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and an emergency control unit for switching to an emergency charging mode or an auxiliary connection mode by turning on the emergency charging switch or the auxiliary battery switch during the voltage measurement of the first or second voltage measurement unit.
    Type: Application
    Filed: September 4, 2013
    Publication date: January 2, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Chang-Gi JUNG, Hyung-Ju AHN
  • Patent number: 8552686
    Abstract: A battery control apparatus includes an emergency charging unit including an external charging terminal for applying power to a main battery pack, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; an auxiliary battery connection unit including an auxiliary battery connection terminal for applying power to the vehicle through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and an emergency control unit for switching to an emergency charging mode or an auxiliary connection mode by turning on the emergency charging switch or the auxiliary battery switch during the voltage measurement of the first or second voltage measurement unit.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: October 8, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Chang-Gi Jung, Hyung-Ju Ahn
  • Patent number: 8467159
    Abstract: Disclosed is a relay control apparatus and method for electric drive vehicles. The apparatus controls turn-off of a relay operative to connect an electric drive unit with a battery pack for supplying electrical power to the electric drive unit, and comprises a current sensor for measuring and outputting a residual current flowing between the battery pack and the electric drive unit; and a controller for, in a situation requiring turn-off of the relay, receiving the measured residual current value, comparing the measured residual current value with a reference value for the residual current, and controlling to maintain the ON-state of the relay or to turn off the relay on the basis of the comparison results. Accordingly, it prevents a relay of electric drive vehicles from being damaged due to over-current such as a surge current, at the time of turning off the relay.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: June 18, 2013
    Assignee: LG Chem., Ltd.
    Inventors: Chang-Gi Jung, Ju-Young Kim, Jung-Soo Kang, Cheol-Taek Kim, Do-Youn Kim
  • Patent number: 8390296
    Abstract: Disclosed are a method and an apparatus for detecting abnormality of a current sensor operative to measure a charge or discharge current of a battery pack. The method comprises measuring current and voltage of the battery pack; and detecting abnormality of the current sensor by comparing variations in current and voltage over a predetermined time with a current reference value and a voltage reference value, respectively. According to the present invention, it is capable of improving reliability of the battery pack, and in case that the current sensor is out of order, of protecting the battery pack from dangerous accidents such as explosion.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: March 5, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Chang-Gi Jung, Ju-Young Kim, Jung-Soo Kang, Do-Youn Kim, Cheol-Taek Kim
  • Patent number: 8332169
    Abstract: An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: December 11, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Jung-Soo Kang, Jee-Ho Kim, Ju-Young Kim, Chang-Gi Jung
  • Publication number: 20120268068
    Abstract: A battery control apparatus includes an emergency charging unit including an external charging terminal for applying power to a main battery pack, a first voltage measurement unit for measuring the voltage of the external charging terminal, and an emergency charging switch for switching the connection between the external charging terminal and the main battery pack; an auxiliary battery connection unit including an auxiliary battery connection terminal for applying power to the vehicle through a contactor, a second voltage measurement unit for measuring the voltage of the auxiliary battery connection terminal, and an auxiliary battery switch for switching the connection between the auxiliary battery connection terminal and the contactor; and an emergency control unit for switching to an emergency charging mode or an auxiliary connection mode by turning on the emergency charging switch or the auxiliary battery switch during the voltage measurement of the first or second voltage measurement unit.
    Type: Application
    Filed: July 3, 2012
    Publication date: October 25, 2012
    Inventors: Chang-Gi JUNG, Hyung-Ju AHN
  • Publication number: 20120191390
    Abstract: An apparatus for estimating an OCV of a battery includes a voltage sensing unit for measuring a battery output voltage; a temperature sensing unit for measuring a battery temperature; a data storing unit for periodically receiving the battery output voltage and temperature data from the sensing units and storing the data in a memory; an OCV variation estimating unit for calculating an OCV variation from a varying pattern of battery output voltages measured in the past and at the present, stored in the memory, by applying a mathematical model defining a correlation between the varying pattern and the OCV variation, and estimating an OCV at a current stage by reflecting a correction factor corresponding to the battery temperature on the calculated OCV variation; and an OCV estimating unit for estimating an OCV at the current stage by reflecting the estimated OCV variation on the OCV estimated at a last stage.
    Type: Application
    Filed: April 5, 2012
    Publication date: July 26, 2012
    Inventors: Jung-Soo KANG, Do-Youn Kim, Chang-Gi Jung, Do-Yang Jung
  • Patent number: 8175826
    Abstract: An apparatus for estimating an OCV of a battery includes a voltage sensing unit for measuring a battery output voltage; a temperature sensing unit for measuring a battery temperature; a data storing unit for periodically receiving the battery output voltage and temperature data from the sensing units and storing the data in a memory; an OCV variation estimating unit for calculating an OCV variation from a varying pattern of battery output voltages measured in the past and at the present, stored in the memory, by applying a mathematical model defining a correlation between the varying pattern and the OCV variation, and estimating an OCV at a current stage by reflecting a correction factor corresponding to the battery temperature on the calculated OCV variation; and an OCV estimating unit for estimating an OCV at the current stage by reflecting the estimated OCV variation on the OCV estimated at a last stage.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 8, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Jung-Soo Kang, Do-Youn Kim, Chang-Gi Jung, Do-Yang Jung
  • Publication number: 20120035873
    Abstract: An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.
    Type: Application
    Filed: October 7, 2011
    Publication date: February 9, 2012
    Inventors: Jung-Soo KANG, Jee-Ho KIM, Ju-Young KIM, Chang-Gi JUNG
  • Patent number: 8046181
    Abstract: An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: October 25, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jung-Soo Kang, Jee-Ho Kim, Ju-Young Kim, Chang-Gi Jung
  • Publication number: 20110037476
    Abstract: Disclosed are a method and an apparatus for detecting abnormality of a current sensor operative to measure a charge or discharge current of a battery pack. The method comprises measuring current and voltage of the battery pack; and detecting abnormality of the current sensor by comparing variations in current and voltage over a predetermined time with a current reference value and a voltage reference value, respectively. According to the present invention, it is capable of improving reliability of the battery pack, and in case that the current sensor is out of order, of protecting the battery pack from dangerous accidents such as explosion.
    Type: Application
    Filed: October 26, 2010
    Publication date: February 17, 2011
    Inventors: Chang-Gi Jung, Ju-Young Kim, Jung-Soo Kang, Do-Youn Kim, Cheol-Taek Kim
  • Publication number: 20110032653
    Abstract: Disclosed is a relay control apparatus and method for electric drive vehicles. The apparatus controls turn-off of a relay operative to connect an electric drive unit with a battery pack for supplying electrical power to the electric drive unit, and comprises a current sensor for measuring and outputting a residual current flowing between the battery pack and the electric drive unit; and a controller for, in a situation requiring turn-off of the relay, receiving the measured residual current value, comparing the measured residual current value with a reference value for the residual current, and controlling to maintain the ON-state of the relay or to turn off the relay on the basis of the comparison results. Accordingly, it prevents a relay of electric drive vehicles from being damaged due to over-current such as a surge current, at the time of turning off the relay.
    Type: Application
    Filed: October 19, 2010
    Publication date: February 10, 2011
    Inventors: Chang-Gi Jung, Ju-Young Kim, Jung-Soo Kang, Cheol-Taek Kim, Do-Youn Kim
  • Publication number: 20100174499
    Abstract: An apparatus for estimating an OCV of a battery includes a voltage sensing unit for measuring a battery output voltage; a temperature sensing unit for measuring a battery temperature; a data storing unit for periodically receiving the battery output voltage and temperature data from the sensing units and storing the data in a memory; an OCV variation estimating unit for calculating an OCV variation from a varying pattern of battery output voltages measured in the past and at the present, stored in the memory, by applying a mathematical model defining a correlation between the varying pattern and the OCV variation, and estimating an OCV at a current stage by reflecting a correction factor corresponding to the battery temperature on the calculated OCV variation; and an OCV estimating unit for estimating an OCV at the current stage by reflecting the estimated OCV variation on the OCV estimated at a last stage.
    Type: Application
    Filed: August 22, 2008
    Publication date: July 8, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Jung-Soo Kang, Do-Youn Kim, Chang-Gi Jung, Do-Yang Jung
  • Publication number: 20100036626
    Abstract: An apparatus estimates SOH of a battery based on a battery voltage variation pattern. A data storing unit obtains and stores battery voltage, current and temperature data from sensors, at each SOH estimation. A first SOC estimating unit estimates first SOC by current integration using the battery current data. A second SOC estimating unit estimates open-circuit voltage from the voltage variation pattern, and calculates and stores second SOC corresponding to the open-circuit voltage and temperature using correlations between the open-circuit voltage/temperature and SOC. A weighted mean convergence calculating unit calculates and stores convergence value for weighted mean value of ratio of the second SOC variation to the first SOC variation. A SOH estimating unit estimates capacity corresponding to the weighted mean convergence value using correlation between the weighted mean convergence value and the capacity, estimates relative ratio of the estimated capacity to an initial capacity, and stores it as SOH.
    Type: Application
    Filed: April 15, 2009
    Publication date: February 11, 2010
    Inventors: Jung-Soo KANG, Jee-Ho Kim, Ju-Young Kim, Chang-Gi Jung