Patents by Inventor Sae Hoon Kim

Sae Hoon Kim 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: 12166251
    Abstract: Disclosed are a method for manufacturing a polymer electrolyte membrane for fuel cells in which a plurality of porous reinforcement films and ionomer layers are continuously disposed or stacked, and a polymer electrolyte membrane for fuel cells manufactured thereby. The polymer electrolyte membrane for fuel cells includes the porous reinforcement films, thus having excellent mechanical stiffness and improved physical durability. Further, the polymer electrolyte membrane for fuel cells includes an ionomer layer including a catalyst for decomposing peroxide configured to block gas crossover and may thus minimize performance degradation due to gas crossover and prevent an electrical short, and the polymer electrolyte membrane for fuel cells makes it easy to adjust the position of the ionomer layer in the electrolyte membrane in the thickness direction and may thus effectively mitigate gas crossover.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: December 10, 2024
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jong Kil Oh, Sae Hoon Kim, Bo Ki Hong
  • Patent number: 12119522
    Abstract: A fuel cell vehicle and a method for controlling power generation for the same are provided. The fuel cell includes a motor supplying driving power for driving the fuel cell vehicle, a fuel cell and a battery supplying electrical power for driving the motor, and a vehicle controller for operating the fuel cell in advance by predicting a shortage of discharge power of the battery by monitoring the discharge power of the battery.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: October 15, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jeong Kyu Park, Jae Hoon Jeong, Sae Byeok Seung, Hyo Jun Kim, Sang Chul Yeom, Seung Yoon Lee
  • Publication number: 20210305612
    Abstract: Disclosed are a method for manufacturing a polymer electrolyte membrane for fuel cells in which a plurality of porous reinforcement films and ionomer layers are continuously disposed or stacked, and a polymer electrolyte membrane for fuel cells manufactured thereby. The polymer electrolyte membrane for fuel cells includes the porous reinforcement films, thus having excellent mechanical stiffness and improved physical durability. Further, the polymer electrolyte membrane for fuel cells includes an ionomer layer including a catalyst for decomposing peroxide configured to block gas crossover and may thus minimize performance degradation due to gas crossover and prevent an electrical short, and the polymer electrolyte membrane for fuel cells makes it easy to adjust the position of the ionomer layer in the electrolyte membrane in the thickness direction and may thus effectively mitigate gas crossover.
    Type: Application
    Filed: July 29, 2020
    Publication date: September 30, 2021
    Inventors: Jong Kil Oh, Sae Hoon Kim, Bo Ki Hong
  • Patent number: 10629918
    Abstract: The present invention provides a fuel cell stack with enhanced freeze-thaw durability. In particular, the fuel cell stack includes a gas diffusion layer between a membrane-electrode assembly and a bipolar plate. The gas diffusion layer has a structure that reduces contact resistance in a fuel cell and is cut at a certain angle such that the machine direction (high stiffness direction) of GDL roll is not in parallel with the major flow field direction of the bipolar plate, resulting in an increased GDL stiffness in a width direction perpendicular to a major flow field direction of a bipolar plate.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 21, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bo Ki Hong, Kook Il Han, Sae Hoon Kim, Jae Jun Ko
  • Publication number: 20200113503
    Abstract: Provided are a method for predicting a mortality risk or a sepsis risk, implemented by a processor, to predict an emergency situation, and a device using the same. The method for predicting a mortality risk or a sepsis risk includes: receiving biological signal data for a subject from a biological signal prediction device; generating a risk sequence for the subject based on the biological signal data, by using a risk sequence generation model configured to generate a risk sequence based on the biological signal data; and predicting a risk for the subject based on the risk sequence.
    Type: Application
    Filed: October 10, 2019
    Publication date: April 16, 2020
    Inventors: Young Sam KIM, Kyung Soo Chung, Jin Kyu Yoo, Young Chul Sung, In Hyeok Cho, Sae Hoon Kim, Min Seop Park
  • Patent number: 10598564
    Abstract: An apparatus and a method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle are provided. Particularly, leakage is detected due to failure of an airtight seal of a solenoid valve in a hydrogen tank based on a change of the sensing value of a high pressure sensor which represents a hydrogen tank pressure during a process of performing a wakeup operation at the time of key-off of a vehicle.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: March 24, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sung Mun Cho, Kang Sik Jeon, Sae Hoon Kim
  • Patent number: 10333155
    Abstract: The present invention provides a porous medium with increased hydrophobicity and a method of manufacturing the same, in which a micro-nano dual structure is provided by forming nanoprotrusions with a high aspect ratio by performing plasma etching on the surface of a porous medium with a micrometer-scale surface roughness and a hydrophobic thin film is deposited on the surface of the micro-nano dual structure, thus significantly increasing hydrophobicity. When this highly hydrophobic porous medium is used as a gas diffusion layer of a fuel cell, it is possible to efficiently discharge water produced during electrochemical reaction of the fuel cell, thus preventing flooding in the fuel cell. Moreover, it is possible to sufficiently supply reactant gases such as hydrogen and air (oxygen) to a membrane electrode assembly (MEA), thus improving the performance of the fuel cell.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: June 25, 2019
    Assignees: Hyundai Motor Company, Korea Institute of Science and Technology
    Inventors: Bo Ki Hong, Sae Hoon Kim, Kwang Ryeol Lee, Myoung Woon Moon
  • Publication number: 20190178748
    Abstract: An apparatus and a method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle are provided. Particularly, leakage is detected due to failure of an airtight seal of a solenoid valve in a hydrogen tank based on a change of the sensing value of a high pressure sensor which represents a hydrogen tank pressure during a process of performing a wakeup operation at the time of key-off of a vehicle.
    Type: Application
    Filed: February 14, 2019
    Publication date: June 13, 2019
    Inventors: Sung Mun Cho, Kang Sik Jeon, Sae Hoon Kim
  • Patent number: 10277025
    Abstract: A safety apparatus uses a fuel cell and a high voltage battery as a power source, and includes: a first voltage sensor that measures a voltage of a positive side of a voltage bus; a second voltage sensor that measures a voltage of a negative side of the voltage bus; and a controller that determines an electrical insulation between the positive side of the voltage bus and the electrical chassis based on the voltage of the positive side of the voltage bus and determines an electrical insulation between the negative side of the voltage bus and the electrical chassis based on the voltage of the negative side of the voltage bus.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: April 30, 2019
    Assignee: Hyundai Motor Company
    Inventors: JuHan Kim, Young Bum Kum, Yong Sun Park, Soon Il Jeon, Nam Woo Lee, Sae Hoon Kim
  • Patent number: 10209158
    Abstract: An apparatus and a method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle are provided. Particularly, leakage is detected due to failure of an airtight seal of a solenoid valve in a hydrogen tank based on a change of the sensing value of a high pressure sensor which represents a hydrogen tank pressure during a process of performing a wakeup operation at the time of key-off of a vehicle.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: February 19, 2019
    Assignee: Hyundai Motor Company
    Inventors: Sung Mun Cho, Kang Sik Jeon, Sae Hoon Kim
  • Patent number: 10069158
    Abstract: A fuel cell system and a method of controlling the fuel cell system are provided. The fuel cell system includes at least one bypass valve that is disposed between a passage in an inlet of a fuel cell stack and a bypass passage that is branched from the passage within the inlet and that is connected to a discharge port of the fuel cell stack. In addition, a controller bypasses air supplied from an air blower to the discharge port by adjusting an opening degree of the bypass valve.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: September 4, 2018
    Assignee: Hyundai Motor Company
    Inventors: Sang Uk Kwon, Soon Il Jeon, Sung Gone Yoon, Sae Hoon Kim
  • Patent number: 10069157
    Abstract: A fuel cell system includes an air supply unit for supplying air containing oxygen to a fuel cell stack. A humidifier humidifies the supplied air. An air supply line is connected between a cathode inlet of the fuel cell stack and the humidifier to supply the humidified air to the fuel cell stack. A cathode-side exhaust line is connected between a cathode outlet of the fuel cell stack and the humidifier to supply a cathode exhaust gas discharged from a cathode of the fuel cell stack to the humidifier for humidification in the humidifier. A unified valve module includes a bypass line connected between the air supply line and the cathode-side exhaust line and an outward discharge port discharging the cathode exhaust gas to outside, and controls a gas flow between the humidifier and the fuel cell stack and between the bypass line and the outward discharge port.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: September 4, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jung Jae Lee, Sung Gone Yoon, Sae Hoon Kim
  • Patent number: 9923222
    Abstract: Disclosed is a fuel cell with enhanced mass transfer characteristics in which a highly hydrophobic porous medium, which is prepared by forming a micro-nano dual structure in which nanometer-scale protrusions with a high aspect ratio are formed on the surface of a porous medium with a micrometer-scale roughness by plasma etching and then by depositing a hydrophobic thin film thereon, is used as a gas diffusion layer, thereby increasing hydrophobicity due to the micro-nano dual structure and the hydrophobic thin film. When this highly hydrophobic porous medium is used as a gas diffusion layer for a fuel cell, it is possible to reduce water flooding by efficiently discharging water produced by an electrochemical reaction of the fuel cell and to improve the performance of the fuel cell by facilitating the supply of reactant gases such as hydrogen and air (oxygen) to a membrane-electrode assembly (MEA).
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: March 20, 2018
    Assignees: Hyundai Motor Company, Korea Institute of Science and Technology
    Inventors: Bo Ki Hong, Sae Hoon Kim, Kook Il Han, Kwang Ryeol Lee, Myoung Woon Moon
  • Patent number: 9847535
    Abstract: The present invention provides a fuel cell stack with enhanced freeze-thaw durability. In particular, the fuel cell stack includes a gas diffusion layer between a membrane-electrode assembly and a bipolar plate. The gas diffusion layer has a structure that reduces contact resistance in a fuel cell and is cut at a certain angle such that the machine direction (high stiffness direction) of GDL roll is not in parallel with the major flow field direction of the bipolar plate, resulting in an increased GDL stiffness in a width direction perpendicular to a major flow field direction of a bipolar plate.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 19, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Bo Ki Hong, Kook Il Han, Sae Hoon Kim, Jae Jun Ko
  • Patent number: 9806353
    Abstract: The present invention provides a fuel cell separator with a gasket manufactured by integrally forming a gasket on one side of a separator; independently injection molding a frame gasket on a frame such that a first airtight portion covers the entire surface of the frame to maintain the shape of the frame gasket and a second airtight portion projects upward and downward from both ends of the first airtight portion; and bringing the first airtight portion of the frame gasket into contact with the other side of the separator with the gasket formed on one side thereof. To create a fuel cell stack in certain embodiments, the invention stacks the second airtight portion of the frame gasket on another second airtight portion of an adjacent unit cell with a membrane-electrode assembly interposed therebetween.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: October 31, 2017
    Assignee: Hyundai Motor Company
    Inventors: Sang Mun Chin, Sae Hoon Kim, Yoo Chang Yang, Suk Min Baeck, Seong Il Heo
  • Publication number: 20170010178
    Abstract: An apparatus and a method for detecting leakage in a hydrogen tank of a hydrogen fuel cell vehicle are provided. Particularly, leakage is detected due to failure of an airtight seal of a solenoid valve in a hydrogen tank based on a change of the sensing value of a high pressure sensor which represents a hydrogen tank pressure during a process of performing a wakeup operation at the time of key-off of a vehicle.
    Type: Application
    Filed: June 20, 2016
    Publication date: January 12, 2017
    Inventors: Sung Mun Cho, Kang Sik Jeon, Sae Hoon Kim
  • Patent number: 9525184
    Abstract: Disclosed is a manifold block for a fuel cell, which provides excellent electrical insulation for a coolant flow channel in an internal flow channel. More specifically, a manifold block for a fuel cell stack, includes a coolant interface formed of a polymer insulating material and coolant flow channels; and a reactant gas interface formed of a metal material and including reactant gas flow channels. In particular, the reactant and coolant interfaces are mounted to a stack module and, at the same time, are integrally bonded to each other.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 20, 2016
    Assignee: Hyundai Motor Company
    Inventors: Duck Whan Kim, Young Bum Kum, Sae Hoon Kim, Jung Han Yu
  • Publication number: 20160344046
    Abstract: A fuel cell system includes an air supply unit for supplying air containing oxygen to a fuel cell stack. A humidifier humidifies the supplied air. An air supply line is connected between a cathode inlet of the fuel cell stack and the humidifier to supply the humidified air to the fuel cell stack. A cathode-side exhaust line is connected between a cathode outlet of the fuel cell stack and the humidifier to supply a cathode exhaust gas discharged from a cathode of the fuel cell stack to the humidifier for humidification in the humidifier. A unified valve module includes a bypass line connected between the air supply line and the cathode-side exhaust line and an outward discharge port discharging the cathode exhaust gas to outside, and controls a gas flow between the humidifier and the fuel cell stack and between the bypass line and the outward discharge port.
    Type: Application
    Filed: November 30, 2015
    Publication date: November 24, 2016
    Inventors: Jung Jae LEE, Sung Gone YOON, Sae Hoon KIM
  • Patent number: 9428078
    Abstract: A method and an apparatus using a power transistor in a fuel cell stack diagnostic system provides an apparatus using a power transistor in a fuel cell stack diagnostic system. The apparatus includes a regenerative braking detector that detects regenerative braking of a fuel cell vehicle equipped with a fuel cell stack diagnostic system; a voltage rise determiner that determines whether a voltage rise due to regenerative braking of a fuel cell vehicle is a predetermined value or more; and a power transistor controller that controls an AC signal generator so that the voltage due to the regenerative braking is discharged by the power transistor, when the voltage rise due to regenerative braking determined by the voltage rise determiner is a predetermined value or more.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 30, 2016
    Assignees: HYUNDAI MOTOR COMPANY, KANGNAM UNIVERSITY INDUSTRY-ACADEMIA COOPERATION FOUNDATION
    Inventors: Kwi Seong Jeong, Sae Hoon Kim, Uck-Soo Kim, Hyun-Seok Park, Young-Hyun Lee
  • Patent number: 9425472
    Abstract: A failure diagnosis apparatus that includes an alternating current (AC) absorption unit that is connected to the fuel cell stack and switched based on an applied AC signal to enable a current from the fuel cell stack to flow. In addition, an AC signal generator is configured to generate the AC signal and supply the generated AC signal to the AC absorption unit. As the current from the fuel cell stack is absorbed by the AC absorption unit based on an alternating signal, a stack current input into a diagnosis processing unit includes an AC component, thus the diagnosis processing unit may diagnose fuel cell stack failure by analyzing a frequency of the AC component.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: August 23, 2016
    Assignees: Hyundai Motor Company, Kangnam University Industry-Academia Cooperation Foundation, Hyundai Autron Co., Ltd.
    Inventors: Kwi Seong Jeong, Young Bum Kum, Sae Hoon Kim, Haengjin Ko, Young-Hyun Lee, Uck-Soo Kim, Hyun-Seok Park