Patents by Inventor Chang Gi RYU

Chang Gi RYU 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).

  • Patent number: 12350999
    Abstract: A method for controlling an electric heater of a vehicular heating, ventilation, and air conditioning (HVAC) system includes turning on the electric heater; determining whether an ambient air temperature of a vehicle is higher than or equal to a threshold ambient air temperature, and a battery temperature is lower than or equal to a threshold battery temperature; determining whether battery efficiency is lower than or equal to threshold efficiency when the ambient air temperature of the vehicle is higher than or equal to the threshold ambient air temperature, and the battery temperature is lower than or equal to the threshold battery temperature; and turning off the electric heater when the battery efficiency is lower than or equal to the threshold efficiency, wherein the electric heater is configured to receive electric energy from the battery.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: July 8, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Dae Hyun Song, Chang Gi Ryu, Woo Jin Lee, Dong Ju Ko, Hyun Hun Choi, Chun Kyu Kwon, In Uk Ko
  • Publication number: 20250187389
    Abstract: A vehicle thermal management system includes: a control valve; a battery fluidly connected to the control valve; a power electronics (PE) component fluidly connected to the control valve; a radiator fluidly connected to the control valve; and a high-performance computer (HPC) fluidly connected to the control valve. In particular, the HPC and the battery are connected in parallel to the control valve, and the control valve is configured to control the flow of a coolant between the PE component, the radiator, the battery, and the HPC.
    Type: Application
    Filed: May 30, 2024
    Publication date: June 12, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Jae Yeon Moon, Seong Bin Jeong, Dong Ju Ko, Chang Gi Ryu, Won Bin Jeong
  • Publication number: 20250153539
    Abstract: A vehicle thermal management system includes: a refrigerant system having a compressor, a water-cooled condenser, a chiller-side expansion valve, and a chiller; and a coolant system having a cabin heater, a battery, a power electronics (PE) component, and a control valve unit. The water-cooled condenser includes a refrigerant passage through which a refrigerant passes, and a coolant passage through which a coolant passes. The control valve unit is configured to allow the coolant passage of the water-cooled condenser and the cabin heater to be fluidly connected or disconnected.
    Type: Application
    Filed: May 17, 2024
    Publication date: May 15, 2025
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Seong Bin Jeong, Yong Woong Cha, Dong Seok Oh, Chang Gi Ryu, Yeon Ho Kim, Dae Hyun Song, Jong Hwan Kwon, Jae Yeon Kim, Jung Ha Park
  • Publication number: 20250031345
    Abstract: A coolant system includes a battery coolant line fluidly connected to a battery, a power electronics coolant line fluidly connected to a power electronic component, a radiator coolant line fluidly connected to a radiator, a control valve configured to allow the battery coolant line, the power electronics coolant line, and the radiator coolant line to be fluidly connected to or separated from each other, a temperature sensor disposed in at least one of the battery coolant line, the power electronics coolant line, or the radiator coolant line, and a controller configured to control a switching operation of the control valve under a predetermined condition in a manner that fluidly connects a coolant line without any temperature sensor to a coolant line with the temperature sensor, and determine a temperature of a coolant passing through the coolant line without any temperature sensor based on a temperature sensed by the temperature sensor.
    Type: Application
    Filed: October 17, 2023
    Publication date: January 23, 2025
    Inventors: Jae Min CHAE, Chang Gi Ryu, Soo II Lee, Dae Hyun Song, Seung Ryeol Lee, Jong Dae Gwak
  • Publication number: 20240109397
    Abstract: A method for controlling an electric heater of a vehicular heating, ventilation, and air conditioning (HVAC) system includes turning on the electric heater; determining whether an ambient air temperature of a vehicle is higher than or equal to a threshold ambient air temperature, and a battery temperature is lower than or equal to a threshold battery temperature; determining whether battery efficiency is lower than or equal to threshold efficiency when the ambient air temperature of the vehicle is higher than or equal to the threshold ambient air temperature, and the battery temperature is lower than or equal to the threshold battery temperature; and turning off the electric heater when the battery efficiency is lower than or equal to the threshold efficiency, wherein the electric heater is configured to receive electric energy from the battery.
    Type: Application
    Filed: March 30, 2023
    Publication date: April 4, 2024
    Inventors: Dae Hyun Song, Chang Gi Ryu, Woo Jin Lee, Dong Ju Ko, Hyun Hun Choi, Chun Kyu Kwon, In Uk Ko
  • Publication number: 20230158908
    Abstract: A refrigerant amount monitoring and charging control system for an electric vehicle and a method thereof include: a controller; a battery management module electrically connected to the controller; a high-speed charging gun connected to the vehicle when the vehicle is charged and configured to generate a high-speed charging signal during performing high-speed charging and to send the high-speed charging signal to the controller; an ambient temperature sensor electrically connected to the controller and configured to obtain an ambient temperature and to send the obtained ambient temperature to the controller; and a chiller including an electronic expansion valve and an evaporator. A situation where a vehicle battery is unable to be cooled by a refrigerant due to an insufficient refrigerant amount may be prevented by controlling charging power based on a monitoring result of a current refrigerant amount.
    Type: Application
    Filed: August 29, 2022
    Publication date: May 25, 2023
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Qing Dong HOU, Xue Shan TANG, Chang Gi RYU, Xiao Rui ZHAI