Patents by Inventor Hyeon Seok Ban

Hyeon Seok Ban 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: 20210285564
    Abstract: A solenoid valve includes a valve housing having a first space that communicates with an inlet flow path and a second space that communicates with an outlet flow path. A solenoid is provided in the valve housing to surround the first space. A flow path guide is provided in the first space and has an inflow path communicating with the first space. A plunger is rectilinearly moved in the flow path guide by the solenoid. A valve member is connected to the plunger and opens or closes the outlet flow path based on a plunger movement. A spring member provides elastic force allowing the valve member to move in a direction in which the valve member blocks the outlet flow path. A fluid guide part is formed in the plunger and guides a fluid, supplied into the inflow path via the first space, selectively to the second space.
    Type: Application
    Filed: September 28, 2020
    Publication date: September 16, 2021
    Inventors: In Tae Park, Hyeon Seok Ban, Hyo Sub Shim
  • Patent number: 11069910
    Abstract: A method is provided for controlling a hydrogen cut-off valve, which may be provided on a hydrogen supply line of a fuel cell system, in driving a fuel cell vehicle mounted with a hydrogen supply line including a high-pressure tank storing hydrogen, a hydrogen supply valve, and a hydrogen cut-off valve. The method includes: a step (a) of measuring a duty applying to the hydrogen supply valve and a step (b) of comparing the duty with a predetermined duty, in which when the duty is equal to or more than the predetermined duty, it is determined that the hydrogen supply line between the high-pressure tank and the hydrogen supply valve is abnormal.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: July 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Se Kwon Jung, Hyeon Seok Ban
  • Publication number: 20210184232
    Abstract: The present disclosure provides an ejector nozzle and an ejector including the same. The ejector nozzle includes a first tube having a first flow path into which a fluid is introduced, and a second tube provided outside the first tube and having an inner diameter larger than an inner diameter of the first tube, the second tube defining a second flow path between the first tube and the second tube, in which the first tube further includes a communication port that penetrates the first tube to allow the first flow path to communicate with the second flow path and is openably and closably provided, and in which when the communication port is opened, a part of the fluid flowing in the first flow path is allowed to flow along the second flow path.
    Type: Application
    Filed: August 4, 2020
    Publication date: June 17, 2021
    Inventors: In Tae Park, Hak Yoon Kim, Hyeon Seok Ban
  • Patent number: 10879547
    Abstract: A method of controlling hydrogen concentration of a fuel cell includes calculating hydrogen or nitrogen concentration of gas stored in a fuel tank; estimating hydrogen or nitrogen concentration at an anode of the fuel cell based on the calculated hydrogen or nitrogen concentration of the gas; and controlling a hydrogen supply unit based on the estimated hydrogen or nitrogen concentration at the anode such that the hydrogen or nitrogen concentration at the anode follows desired hydrogen concentration or desired nitrogen concentration.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: December 29, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Soon Woo Kwon, Hyeon Seok Ban, Joon Yong Lee
  • Publication number: 20200185743
    Abstract: A hydrogen supply control method of a fuel cell system is provided. The method includes measuring the pressure of a front line of a supply line having relatively low humidity and the pressure of a front end of an ejector, without a pressure sensor of an anode. The amount of supplied hydrogen is then adjusted using the measured pressure and the pressure of the anode is estimated more accurately.
    Type: Application
    Filed: May 7, 2019
    Publication date: June 11, 2020
    Inventors: Ho June Bae, Hyeon Seok Ban
  • Publication number: 20200168927
    Abstract: A method of measuring a water level in a water trap of a fuel cell system, the method including outputting a detected water level of a capacitive level sensor having a plurality of electrodes in the water trap. The method includes resetting a reference output value of each electrode and determining the water level depending on the speed at which water is introduced while detecting the water level in the water trap depending on an output value measured by the plurality of electrodes. Thereby, the influence of temperature and electrode differences is removed.
    Type: Application
    Filed: June 10, 2019
    Publication date: May 28, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Hyo Sub Shim, Hak Yoon Kim, Hyeon Seok Ban
  • Publication number: 20190288314
    Abstract: A method of controlling hydrogen concentration of a fuel cell includes calculating hydrogen or nitrogen concentration of gas stored in a fuel tank; estimating hydrogen or nitrogen concentration at an anode of the fuel cell based on the calculated hydrogen or nitrogen concentration of the gas; and controlling a hydrogen supply unit based on the estimated hydrogen or nitrogen concentration at the anode such that the hydrogen or nitrogen concentration at the anode follows desired hydrogen concentration or desired nitrogen concentration.
    Type: Application
    Filed: August 6, 2018
    Publication date: September 19, 2019
    Inventors: Soon Woo Kwon, Hyeon Seok Ban, Joon Yong Lee
  • Patent number: 10112486
    Abstract: A device for detecting leakage of gas of a fuel cell vehicle includes a gas sensor configured to determine whether gas leaks based on a change in a temperature by a catalyst reaction and a vehicle control unit including a comparator configured to read a variation in temperature from the gas sensor, and configured to control a fuel cell vehicle. A power application state is maintained in the comparator in a power off state of the fuel cell vehicle. Power of the gas sensor is switched at regular periodic intervals. The comparator determines the variation in temperature measured by the gas sensor, and, when the variation in temperature exceeds a predetermined value, the power of the gas sensor is switched to normal power.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: October 30, 2018
    Assignee: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Ho June Bae, Ji Hyun Shim
  • Publication number: 20180175417
    Abstract: A method is provided for controlling a hydrogen cut-off valve, which may be provided on a hydrogen supply line of a fuel cell system, in driving a fuel cell vehicle mounted with a hydrogen supply line including a high-pressure tank storing hydrogen, a hydrogen supply valve, and a hydrogen cut-off valve. The method includes: a step (a) of measuring a duty applying to the hydrogen supply valve and a step (b) of comparing the duty with a predetermined duty, in which when the duty is equal to or more than the predetermined duty, it is determined that the hydrogen supply line between the high-pressure tank and the hydrogen supply valve is abnormal.
    Type: Application
    Filed: November 10, 2017
    Publication date: June 21, 2018
    Inventors: Se Kwon Jung, Hyeon Seok BAN
  • Patent number: 9997790
    Abstract: A fuel cell is provided which comprises a plurality of manifolds at a first end and a second end of the fuel cell and a separator having passages between the first and the second ends of the fuel cell. In particular, the fuel cell includes a nozzle disposed between at least one of the plurality of manifolds and the passages and having an inlet into which a material is introduced from the at least one of the plurality of manifolds and an outlet from which the introduced material is discharged to the passages.
    Type: Grant
    Filed: November 23, 2014
    Date of Patent: June 12, 2018
    Assignee: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Yong Gyu Noh, Hyun Joon Lee
  • Publication number: 20180079309
    Abstract: A device for detecting leakage of gas of a fuel cell vehicle includes a gas sensor configured to determine whether gas leaks based on a change in a temperature by a catalyst reaction and a vehicle control unit including a comparator configured to read a variation in temperature from the gas sensor, and configured to control a fuel cell vehicle. A power application state is maintained in the comparator in a power off state of the fuel cell vehicle. Power of the gas sensor is switched at regular periodic intervals. The comparator determines the variation in temperature measured by the gas sensor, and, when the variation in temperature exceeds a predetermined value, the power of the gas sensor is switched to normal power.
    Type: Application
    Filed: December 15, 2016
    Publication date: March 22, 2018
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Hyeon Seok Ban, Ho June Bae, Ji Hyun Shim
  • Patent number: 9664586
    Abstract: A system and method are provided for compensating an offset of a pressure sensor. The system includes a pressure sensor that is configured to detect pressure and a power management module that is configured to automatically supply power to a controller connected to the power management module or terminate the supply of power after a preset time to thereby turn the controller on or off. The system further includes the controller connected to the power management module and configured to determine the offset of the pressure sensor based on a pressure value which is detected by the pressure sensor when the power is supplied from the power management module. The system also includes a memory configured to store the determined offset.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: May 30, 2017
    Assignee: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Ho June Bae, Hyun Joon Lee
  • Publication number: 20160033351
    Abstract: A system and method are provided for correcting an offset of a pressure sensor. The system includes a pressure sensor that is configured to detect pressure of the system and a power management module that is configured to automatically supply power to an apparatus connected to the power management module or terminate the supply of power after a preset time to thereby turn the apparatus on or off. The system further includes a controller connected to the power management module and configured to determine the offset of the pressure sensor based on a pressure value of the system which is detected by the pressure sensor when the power is supplied from the power management module. The system also includes a memory configured to store the determined offset.
    Type: Application
    Filed: December 8, 2014
    Publication date: February 4, 2016
    Inventors: Hyeon Seok Ban, Ho June Bae, Hyun Joon Lee
  • Publication number: 20150333341
    Abstract: A fuel cell is provided which comprises a plurality of manifolds at a first end and a second end of the fuel cell and a separator having passages between the first and the second ends of the fuel cell. In particular, the fuel cell includes a nozzle disposed between at least one of the plurality of manifolds and the passages and having an inlet into which a material is introduced from the at least one of the plurality of manifolds and an outlet from which the introduced material is discharged to the passages.
    Type: Application
    Filed: November 23, 2014
    Publication date: November 19, 2015
    Inventors: Hyeon Seok Ban, Yong Gyu Noh, Hyun Joon Lee
  • Patent number: 7687171
    Abstract: Multi-stage in-line cartridge ejectors for a fuel cell system provided herein comprise: at least one ejector main body for supplying hydrogen, each ejector main body including a plurality of nozzles arranged in line with a predetermined gap, in which the diameters of the respective nozzles become larger from an inlet side of the ejector main body toward an outlet side thereof, and a plurality of sub-inlets formed on an outer surface of the ejector main body to be connected to the gap or gaps between the nozzles; and a housing accommodating the eject main body and including a main inlet for intake of recirculated hydrogen. The multi-stage in-line cartridge ejectors can improve the system performance by increasing the amount of recirculated hydrogen. Moreover, at least one check valve is provided at an intake position of the cartridge ejectors to effectively prevent reverse flow of recirculation hydrogen gas and at least one heater is provided around the cartridge ejectors to improve cold startability.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: March 30, 2010
    Assignee: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Hae Weon Lee, Yong Gyu Noh, Yong Sun Park
  • Publication number: 20090155668
    Abstract: Multi-stage in-line cartridge ejectors for a fuel cell system provided herein comprise: at least one ejector main body for supplying hydrogen, each ejector main body including a plurality of nozzles arranged in line with a predetermined gap, in which the diameters of the respective nozzles become larger from an inlet side of the ejector main body toward an outlet side thereof, and a plurality of sub-inlets formed on an outer surface of the ejector main body to be connected to the gap or gaps between the nozzles; and a housing accommodating the eject main body and including a main inlet for intake of recirculated hydrogen. The multi-stage in-line cartridge ejectors can improve the system performance by increasing the amount of recirculated hydrogen. Moreover, at least one check valve is provided at an intake position of the cartridge ejectors to effectively prevent reverse flow of recirculation hydrogen gas and at least one heater is provided around the cartridge ejectors to improve cold startability.
    Type: Application
    Filed: May 29, 2008
    Publication date: June 18, 2009
    Applicant: Hyundai Motor Company
    Inventors: Hyeon Seok Ban, Hyun Joon Lee, Yong Gyu Noh, Yong Sun Park