Patents by Inventor Tae-Won Lim

Tae-Won Lim 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: 7867656
    Abstract: The present invention provides a fuel cell separator formed of a continuous carbon-fiber composite, and a method for manufacturing the same.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: January 11, 2011
    Assignees: Hyundai Motor Company, Korea Advanced Institute of Science and Technology
    Inventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
  • Publication number: 20100196743
    Abstract: The present invention provides an apparatus and method for purging residual water and hydrogen during shutdown of a fuel cell, which can reduce the time required for purging residual water and hydrogen during shutdown of a fuel cell by opening and closing outlet lines of an anode and a cathode in a short period of time using solenoid valves.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 5, 2010
    Applicants: Hyundai Motor Company
    Inventors: Kyu Taek Cho, Jong Jin Yoon, Tae Won Lim, Soo Whan Kim, Jong Hyun Lee, Matthew M. Mench
  • Publication number: 20100129689
    Abstract: A system for activating a fuel cell includes a flow meter for measuring the amount of water discharged from an outlet of the air electrode and an outlet of the fuel electrode; a pressure sensor for measuring the pressure at the respective outlets; and a back pressure regulator receiving flow values measured by the flow meters and pressure values measured by the pressure sensors, which are fed back from a controller, and regulating a pressure difference (?P=PCathode?PAnode) to be a value greater than 0. With the system, the activation time of a fuel cell and the amount of hydrogen used for the activation can be reduced, thus improving the productivity and manufacturing cost.
    Type: Application
    Filed: July 15, 2009
    Publication date: May 27, 2010
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Tae Won Lim, Sae Hoon Kim, Sang Yeoul Ahn, Bo Ki Hong, Byung Ki Ahn
  • Publication number: 20100086821
    Abstract: The present invention provides a method for manufacturing a membrane-electrode assembly (MEA) which is a core element of a polymer electrolyte membrane fuel cell for a vehicle and an electrode therefor. The method for manufacturing an MEA of the present invention is implemented to provide a highly-concentrated catalyst slurry which is uniformly dispersed, compared to conventional catalyst slurries, by a catalyst slurry manufacturing process including a vacuum defoaming process.
    Type: Application
    Filed: January 28, 2009
    Publication date: April 8, 2010
    Applicant: Hyundai Motor Company
    Inventors: Nak Hyun Kwon, Tae Won Lim, In Chul Hwang, Byung Ki Ahn, Jae Seung Lee, Ki Sub Lee
  • Publication number: 20100086450
    Abstract: The present invention relates to a method and apparatus for preparing a catalyst slurry for fuel cells, in which nano-sized catalyst particles are dispersed uniformly at a high concentration and the adsorption force between the catalyst and ionomer is maximized. The resulting catalyst slurry is suitable for the manufacture of a membrane-electrode assembly (MEA) of a polymer electrolyte (or proton exchange) membrane fuel cell (PEMFC).
    Type: Application
    Filed: November 24, 2009
    Publication date: April 8, 2010
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Nak Hyun Kwon, In Chul Hwang, Byung Ki Ahn, Tae Won Lim
  • Publication number: 20100087309
    Abstract: The present invention relates to a method and apparatus for preparing a catalyst slurry for fuel cells, in which nano-sized catalyst particles are dispersed uniformly at a high concentration and the adsorption force between the catalyst and ionomer is maximized. The resulting catalyst slurry is suitable for the manufacture of a membrane-electrode assembly (MEA) of a polymer electrolyte (or proton exchange) membrane fuel cell (PEMFC).
    Type: Application
    Filed: July 9, 2009
    Publication date: April 8, 2010
    Applicant: Hyundai Motor Company
    Inventors: Nak Hyun KWON, In Chul HWANG, Byung Ki AHN, Tae Won LIM
  • Publication number: 20100040913
    Abstract: The present invention provides an apparatus and method for determining deterioration of a fuel cell, the method including measuring in real time fluoride ion concentration or pH value of outflow water from a fuel cell stack during operation in a fuel cell vehicle, calculating a fluoride emission rate from the measured value and, if the calculated fluoride emission rate is out of a predetermined normal range, determining deterioration of an electrolyte membrane of the fuel cell stack.
    Type: Application
    Filed: January 28, 2009
    Publication date: February 18, 2010
    Applicants: HYUNDAI MOTOR COMPANY, INDUSTRY-ACADEMY COOPERATION FOUNDATION, SCNU
    Inventors: Ik Jae Son, Byung Ki Ahn, Tae Won Lim, Jong Hyun Lee, Kwon Pil Park, Ho Lee, Chang Won Jung, Seung Chan Oh, Jae Jun Ko, Young Min Kim, Sae Hoon Kim, Jong Jin Yoon, Se Joon Im
  • Publication number: 20090311566
    Abstract: The present invention provides a separating plate for a fuel cell stack and method of manufacturing the same, and more particularly, to a separating plate for a fuel cell stack and method of manufacturing the same, in which the separating plate constituting the fuel cell stack is formed in such a fashion as to interpose an array of metal pipes between two sheets of composite material, and a gasket abutting against the separating plate is formed in such a fashion as to define hydrogen and air flow channels, thereby removing a contact resistance between two adjoining separating plates constituting unit cells to improve the efficiency of the fuel cell.
    Type: Application
    Filed: February 27, 2009
    Publication date: December 17, 2009
    Applicants: Hyundai Motor Company, Korea Advanced Institute of Science and Technology
    Inventors: Sae Hoon Kim, Yoo Chang Yang, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang, Byoung Chul Kim, Kwan Ho Lee, Soon Ho Yoon
  • Publication number: 20090295012
    Abstract: A separating plate for polymer electrolyte membrane fuel cell and a method for manufacturing the same is provided. Preferred separating plates for polymer electrolyte membrane fuel cell are capable of being light weight and corrosion resistant, as well as being economical to produce and exhibit good physical properties. Preferred separating plates are produced with compositions comprising graphite and phenolic resin.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 3, 2009
    Applicant: Hyundai Motor Company
    Inventors: Min-Kyu Song, Yoo Chang Yang, Kyung Sup Han, Sung Il Huh, Tae Won Lim
  • Publication number: 20090286134
    Abstract: The present invention provides an end plate for fuel cell stack and a method for manufacturing an end plate, which can increase flexural rigidity per weight, and improve strain at break, and reduce heat transmission by applying hybrid core element having honeycomb and form structures to an end plate having sandwich structure combined to both end portions of a fuel cell stack.
    Type: Application
    Filed: November 24, 2008
    Publication date: November 19, 2009
    Applicants: HYUNDAI MOTOR COMPANY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
  • Publication number: 20090269671
    Abstract: The present invention provides a fuel cell separator formed of a continuous carbon-fiber composite, and a method for manufacturing the same.
    Type: Application
    Filed: August 19, 2008
    Publication date: October 29, 2009
    Applicants: Hyundai Motor Company, Korea Advanced Institute of Science and Technology
    Inventors: Sae Hoon Kim, Sung Ho Lee, Jung Do Suh, Byung Ki Ahn, Tae Won Lim, Dai Gil Lee, Seong Su Kim, Ha Na Yu, In Uk Hwang
  • Patent number: 7537855
    Abstract: A composite gasket for fuel cell stack comprises two rows of beads and a support which can improve mountability and sealing property and reduce the assembly pressure by using materials having low hardness with reduced volume. This invention also relates to a structure for the assembly of the composite gasket.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: May 26, 2009
    Assignee: Hyundai Motor Company
    Inventors: Kyu Taek Cho, Tae Won Lim, Ki Chun Lee, Soo Whan Kim, Jong Hyun Lee, Su Hyun Choi
  • Publication number: 20080093809
    Abstract: The present invention relates to a gasket structure for use in a fuel cell having a separator which defines at each of the both ends thereof a hydrogen manifold, an air manifold, an antifreezing solution manifold between the hydrogen manifold and the air manifold, the structure comprising a plurality of gasket parts a portion of which is open toward the outside of the separator so as to prevent antifreezing solution leaked from the antifreezing solution manifold from flowing into the hydrogen manifold and the air manifold.
    Type: Application
    Filed: November 15, 2006
    Publication date: April 24, 2008
    Applicant: Hyundai Motor Company
    Inventors: Young Bum Kum, Tae Won Lim, Sae Hoon Kim, Yu Chang Yang
  • Publication number: 20080006484
    Abstract: A system for transferring a vehicle body according to an embodiment of the present invention includes a stage accommodating the vehicle body and transferring the vehicle body, and a height regulating unit which is disposed on the stage and which regulates height of the vehicle body according to a type of assembly line. The height regulating unit includes a bracket disposed on a lower portion of the stage; at least one lifter, one end of which is disposed on the bracket and the other end of which is disposed on the vehicle body, so as to raise and lower the vehicle body; and a driving part for driving the lifter.
    Type: Application
    Filed: December 15, 2005
    Publication date: January 10, 2008
    Inventors: Tae Won Lim, Dong Hwan Yang
  • Publication number: 20070134524
    Abstract: A fuel cell stack structure comprising a unit module, common distributor, and bus bar is disclosed. The unit module comprises fuel cells, current collecting plates, insulating plates, end plates, and fixing bands.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 14, 2007
    Inventors: Kyu-Taek Cho, Yoo-Chang Yang, Jong-Hyun Lee, Tae-Won Lim
  • Patent number: 7056612
    Abstract: A manufacturing method of Membrane-Electrode-Gasket Assemblies (MEGAs) used for polymer electrolyte fuel cells (PEFCs) is described wherein a polymer electrolyte membrane is formed directly on a electrode. A typical PEFC is constructed by assembling membrane-electrode assembly (MEA), gaskets, and separators. According to the invented method, PEFC is fabricated by assembling separators and MEGA, into which MEA and a gasket are integrated. Compared to the conventional MEA-gasket assemblies, MEGAs are easy to handle and can be mass-produced via a manufacturing process in a series. Moreover, employing MEGAs improves PEFC performance since the membrane thickness of MEGAs is lower than that of the conventional MEA-gasket assemblies.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: June 6, 2006
    Assignee: Hyundai Motor Company
    Inventors: In-Whan Oh, Heung Yong Ha, Seong-Ahn Hong, Sang-Yeoul Ahn, Yong-Chul Lee, Tae Won Lim, Ki Chun Lee, Soo Whan Kim, Jong Hyun Lee
  • Patent number: 6953631
    Abstract: A method for operating a polymer electrolyte membrane fuel cell at temperatures below the freezing point of water and an apparatus thereof are provided to prevent damage and performance degradation of the membrane-electrode assemblies. Non-humidified gas flows for several seconds before temperature of the polymer electrolyte membrane fuel cell falls below the freezing temperature of water when operation of the polymer electrolyte membrane fuel cell stops. Simultaneously, anode of the polymer electrolyte membrane fuel cell is filled with a solution having a low freezing point to prevent the temperature of a polymer electrolyte membrane fuel cell falling below the freezing point of water due to the lower ambient temperature in the winter. When the polymer electrolyte membrane fuel cell is restarted, the cell performance is not degraded reflecting that the present invention stably preserves the fuel cell.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: October 11, 2005
    Assignees: Hyundai Motor Company, Korea Institute of Science and Technology
    Inventors: In Hwan Oh, Jae Jun Ko, Heung Yong Ha, Seong-Ahn Hong, Tae Won Lim, Ki Chun Lee, Soo Whan Kim, Jong Hyun Lee
  • Patent number: 6844095
    Abstract: The present invention relates to a humidifier for humidifying reactant gases for a polymer electrolyte fuel cell system, and more particularly, to the humidifier for humidifying reactant gas which adjusts an amount of water for humidification while reducing electric power consumption and size, thereby maintaining an optimal temperature and humidity of the reactant gas supplied to a polymer electrolyte fuel cell. The humidifier for humidifying reactant gases comprises a humidification vessel connected to a reactant gas inlet pipe for supplying reactant gases thereto, a water inlet pipe for supplying water thereto, and a reactant gas supplying pipe for supplying the humidified reactant gas to the fuel cell are connected, respectively, and a sprayer which is installed in the humidification vessel and finely sprays the reactant gases and water which are supplied to the humidification vessel.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: January 18, 2005
    Assignees: Hyundai Motor Company, Korea Institute of Science and Technology
    Inventors: Tae-Won Lim, Ki-Chun Lee, In-Hwan Oii, Seock-Jac Shin, Se-Kyu Park, Hung-Young Ila, Seong-Ahn Hong
  • Publication number: 20030121603
    Abstract: A manufacturing method of Membrane-Electrode-Gasket Assemblies (MEGAs) used for polymer electrolyte fuel cells (PEFCs) is described wherein a polymer electrolyte membrane is formed directly on a electrode. A typical PEFC is constructed by assembling membrane-electrode assembly (MEA), gaskets, and separators. According to the invented method, PEFC is fabricated by assembling separators and MEGA, into which MEA and a gasket are integrated. Compared to the conventional MEA-gasket assemblies, MEGAs are easy to handle and can be mass-produced via a manufacturing process in a series. Moreover, employing MEGAs improves PEFC performance since the membrane thickness of MEGAs is lower than that of the conventional MEA-gasket assemblies.
    Type: Application
    Filed: December 23, 2002
    Publication date: July 3, 2003
    Inventors: In-Whan Oh, Heung Yong Ha, Seong-Ahn Hong, Sang-Yeoul Ahn, Yong-Chul Lee, Tae Won Lim, Kichun Lee, Soo Whan Kim, Jong Hyun Lee
  • Publication number: 20030108781
    Abstract: A method for operating a polymer electrolyte membrane fuel cell at temperatures below the freezing point of water and an apparatus thereof are provided to prevent damage and performance degradation of the membrane-electrode assemblies. Non-humidified gas flows for several seconds before temperature of the polymer electrolyte membrane fuel cell falls below the freezing temperature of water when operation of the polymer electrolyte membrane fuel cell stops. Simultaneously, anode of the polymer electrolyte membrane fuel cell is filled with a solution having a low freezing point to prevent the temperature of a polymer electrolyte membrane fuel cell falling below the freezing point of water due to the lower ambient temperature in the winter. When the polymer electrolyte membrane fuel cell is restarted, the cell performance is not degraded reflecting that the present invention stably preserves the fuel cell.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 12, 2003
    Inventors: In Hwan Oh, Jae Jun Ko, Heung Yong Ha, Seong-Ahn Hong, Tae Won Lim, Ki Chun Lee, Soo Whan Kim, Jong Hyun Lee