Patents by Inventor Oh Tak KWON

Oh Tak KWON 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: 20230187671
    Abstract: An embodiment of the present disclosure provides a structure for improving performance of a fuel cell thermal management system. The structure for improving performance of a fuel cell thermal management system may comprise a radiator configured to exchange heat with a coolant discharged from a fuel cell stack, a coolant supply pump configured to supply the coolant to the fuel cell stack, a cathode oxygen depletion (COD) heater disposed in parallel with the radiator, a heater core disposed in series with the COD heater and configured to heat an interior of a vehicle, a temperature adjustment valve coupled to the radiator, the coolant supply pump, and the heater core and configured to control a flow of the coolant, and a reservoir disposed between a downstream side of the fuel cell stack and a front end of the coolant supply pump and configured to adjust a pressure of the coolant.
    Type: Application
    Filed: November 15, 2022
    Publication date: June 15, 2023
    Inventor: Oh Tak Kwon
  • Publication number: 20230187661
    Abstract: Provided is an integrated structure of an ion filter and a reservoir according to an embodiment of the present disclosure. An integrated structure of an ion filter and a reservoir includes a reservoir storing coolant for cooling a fuel cell stack, an ion filter located inside the reservoir, and a control valve located inside the reservoir to be opened or closed so that the coolant flows into the ion filter, in which the reservoir is divided into a first region in which the ion filter is located by opening or closing the control valve and a second region that is a space other than the first region, and the first region and the second region are connected by an air vent unit through which air passes.
    Type: Application
    Filed: November 8, 2022
    Publication date: June 15, 2023
    Inventors: Wook Il Jang, Tae Geum Kim, Soo Hwan Kim, Ji Hyun Lee, Jin Hun Lee, Oh Tak Kwon
  • Publication number: 20230150398
    Abstract: Described herein is a fuel cell system that includes a radiator configured to exchange heat with coolant discharged from a fuel cell stack, a coolant supply pump configured to supply the coolant to the fuel cell stack, a COD heater configured to consume electric power generated by the fuel cell stack, a valve connected to the fuel cell stack, the radiator, the coolant supply pump, and the COD heater to control a flow of the coolant, and a controller configured to control an operating start time and output of the COD heater to consume energy generated by the fuel cell stack depending on a state of charge (SOC) of a battery and an operating state of the fuel cell stack. The controller controls the valve so that the coolant flows to the COD heater in a temperature control section after a cold start section of the fuel cell stack.
    Type: Application
    Filed: October 17, 2022
    Publication date: May 18, 2023
    Inventors: Tae Geun Kim, Oh Tak Kwon, Jin Hun Lee, Hun Woo Park
  • Patent number: 11469426
    Abstract: A thermal management system for a fuel cell vehicle is provided. The thermal management system includes a fuel cell stack, a heater configured to use power generated by the fuel cell stack, a radiator configured to cool a coolant, a pump configured to circulate the coolant, and a valve configured to control a temperature of the coolant by adjusting a flow rate of the coolant supplied to the pump from at least one of the fuel cell stack, the heater, or the radiator.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: October 11, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jin Hun Lee, Tae Geun Kim, Hyun Ju Ji, Wook Il Jang, Oh Tak Kwon, Hun Woo Park, Chui Wan Park
  • Patent number: 11296335
    Abstract: A fuel cell system comprising: a first line configured to pass through a fuel cell stack and allow a coolant to circulate therein; a pump provided in the first line; a second line having one end connected to the first line at a first point positioned between an outlet of the pump and the fuel cell stack, and the other end connected to the first line at a second point positioned between an inlet of the pump and the fuel cell stack; a heater provided in the second line to heat the coolant flowing along the second line; and a third line configured to pass through an air conditioning unit, connected to the first line between the first point and an outlet of the fuel cell stack, and configured to allow a part of the coolant to circulate therein.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: April 5, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jin Hun Lee, Oh Tak Kwon, Wook Il Jang, Hun Woo Park, Tae Geun Kim
  • Publication number: 20210159520
    Abstract: A thermal management system for a fuel cell vehicle is provided. The thermal management system includes a fuel cell stack, a heater configured to use power generated by the fuel cell stack, a radiator configured to cool a coolant, a pump configured to circulate the coolant, and a valve configured to control a temperature of the coolant by adjusting a flow rate of the coolant supplied to the pump from at least one of the fuel cell stack, the heater, or the radiator.
    Type: Application
    Filed: May 5, 2020
    Publication date: May 27, 2021
    Inventors: Jin Hun Lee, Tae Geun Kim, Hyun Ju Ji, Wook Il Jang, Oh Tak Kwon, Hun Woo Park, Chul Wan Park
  • Publication number: 20210028468
    Abstract: A fuel cell system comprising: a first line configured to pass through a fuel cell stack and allow a coolant to circulate therein; a pump provided in the first line; a second line having one end connected to the first line at a first point positioned between an outlet of the pump and the fuel cell stack, and the other end connected to the first line at a second point positioned between an inlet of the pump and the fuel cell stack; a heater provided in the second line to heat the coolant flowing along the second line; and a third line configured to pass through an air conditioning unit, connected to the first line between the first point and an outlet of the fuel cell stack, and configured to allow a part of the coolant to circulate therein.
    Type: Application
    Filed: May 8, 2020
    Publication date: January 28, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jin Hun LEE, Oh Tak KWON, Wook Il JANG, Hun Woo PARK, Tae Geun KIM