Patents by Inventor Mee-Nam Shinn
Mee-Nam Shinn 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).
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Patent number: 10998557Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: GrantFiled: September 24, 2018Date of Patent: May 4, 2021Assignee: Doosan CorporationInventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20190027763Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: ApplicationFiled: September 24, 2018Publication date: January 24, 2019Inventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 10109865Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: GrantFiled: September 16, 2014Date of Patent: October 23, 2018Assignee: Doosan CorporationInventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 10074858Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: GrantFiled: March 11, 2016Date of Patent: September 11, 2018Assignee: DOOSAN CORPORATIONInventors: Sung-Jin Oh, Kyoung-Hwang Lee, Seung-Ho Baek, Sung-Hoon Lee, Il-Tae Park, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 9876237Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: GrantFiled: March 11, 2016Date of Patent: January 23, 2018Assignee: DOOSAN CORPORATIONInventors: Sung-Jin Oh, Kyoung-Hwang Lee, Seung-Ho Baek, Sung-Hoon Lee, Il-Tae Park, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20160254552Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: ApplicationFiled: March 11, 2016Publication date: September 1, 2016Inventors: Sung-Jin OH, Kyoung-Hwang LEE, Seung-Ho BAEK, Sung-Hoon LEE, Il-Tae PARK, Byung-Sun HONG, Mee-Nam SHINN
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Publication number: 20160197361Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: ApplicationFiled: March 11, 2016Publication date: July 7, 2016Inventors: Sung-Jin OH, Kyoung-Hwang LEE, Seung-Ho BAEK, Sung-Hoon LEE, II-Tae PARK, Byung-Sun HONG, Mee-Nam SHINN
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Patent number: 9343756Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: GrantFiled: May 23, 2007Date of Patent: May 17, 2016Assignee: DOOSAN CORPORATIONInventors: Sung-Jin Oh, Kyoung-Hwang Lee, Seung-Ho Baek, Sung-Hoon Lee, Il-Tae Park, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20150004516Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: ApplicationFiled: September 16, 2014Publication date: January 1, 2015Inventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 8865372Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: GrantFiled: August 3, 2004Date of Patent: October 21, 2014Assignee: Fuelcell Power, Inc.Inventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 8420273Abstract: The present invention relates to a sealing structure for polymer electrolyte fuel cell, which comprises a bipolar plate with sealing groove to be filled with rubber using a dispenser, and a gasket interposed between the bipolar plate and a membrane electrode assembly. That is, according to the present invention, the thickness deviation in a gasket can be softened by interposing a gasket between a rubber ands a membrane electrode assembly after filling rubber in a sealing groove formed on a bipolar plate using a dispenser. Also, nonuniform stress distribution can be resolved because a gasket covers with a pressure despite the height deviation of rubber, and a stress is not directly transmitted to a membrane electrode assembly and dispersed by a gasket despite nonuniform stress distribution.Type: GrantFiled: June 23, 2003Date of Patent: April 16, 2013Assignee: Fuelcellpower Co., Ltd.Inventors: Ho-Suk Kim, Mee-Nam Shinn, Byung-Sun Hong, Sung-Jin Oh, Cheol-Nam Yang, Yong-Jung Seo
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Patent number: 8289027Abstract: Disclosed is a cell voltage monitoring apparatus for monitoring output voltages of a plurality of unit cells in a cell having the unit cells. The cell voltage monitoring apparatus includes: a reference voltage generator for generating a predetermined reference voltage from the unit cell generation voltage; a voltage comparator for comparing a generation voltage of a monitor unit cell and the reference voltage; a signal separator for outputting a signal that is electrically separated from an output signal of the voltage comparator; and an operation processor for determining normality of the cell voltage from a signal output by the signal separator.Type: GrantFiled: January 19, 2006Date of Patent: October 16, 2012Assignee: Fuelcell Power, Inc.Inventors: Sang-Yong Lee, Sung-Jin Oh, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20090305086Abstract: Disclosed is a cell voltage monitoring apparatus for monitoring output voltages of a plurality of unit cells in a cell having the unit cells. The cell voltage monitoring apparatus includes: a reference voltage generator for generating a predetermined reference voltage from the unit cell generation voltage; a voltage comparator for comparing a generation voltage of a monitor unit cell and the reference voltage; a signal separator for outputting a signal that is electrically separated from an output signal of the voltage comparator; and an operation processor for determining normality of the cell voltage from a signal output by the signal separator.Type: ApplicationFiled: January 19, 2006Publication date: December 10, 2009Applicant: FUELCELL POWER, Inc.Inventors: Sang-Yong Lee, Sung-Jin Oh, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20090169930Abstract: A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage. Therefore, the reactant gas can be effectively supplied without experiencing pressure loss. Further, in the high load operation of the fuel cell stack, the reactant gas is introduced into the first reactant gas passage of the fuel cell separator and utilized in half of the whole electrode area. Subsequently, the reactant gas is introduced into the second reactant gas passage and utilized in the remaining half of the electrode area.Type: ApplicationFiled: May 23, 2007Publication date: July 2, 2009Applicant: FUELCELL POWER, INCInventors: Sung-Jin Oh, Kyoung-Hwang Lee, Seung-Ho Baek, Sung-Hoon Lee, Il-Tae Park, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20080124594Abstract: A fuel cell system includes a fuel cell stack generating electric power using an electrochemical reaction between hydrogen and oxygen, a fuel process unit supplying reformed gas to the fuel cell stack by reforming an electricity generation material into the reformed gas that is rich in hydrogen, and an air supply unit supplying air containing oxygen to the fuel cell stack. The air supply unit includes an intake passage that extends from an outside space to the fuel cell stack, a first air pump that is installed on the intake passage to allow the air to be introduced into the fuel cell stack, and a first pressure buffer container that is disposed between the first air pump and the fuel cell stack to reduce pressure of the air flowing along the intake passage to a level less than a predetermined pressure.Type: ApplicationFiled: July 16, 2007Publication date: May 29, 2008Applicant: FUELCELL POWER, INC.Inventors: Ho-Suk Kim, Yong-Jin Chon, Byung-Sun Hong, Mee-Nam Shinn
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Publication number: 20070190392Abstract: A lamellar structure graphite foil is used as a material for a separator for a fuel cell, and a hydrophobic layer is formed by impregnation on flow-field channels of the graphite foil. Such a separator is manufactured by forming the flow field channel by etching the graphite foil formed with the mask pattern thereon and forming a hydrophobic layer by impregnation. According to such a separator, performance of a fuel cell stack is enhanced and the manufacturing process of a separator is simplified.Type: ApplicationFiled: August 3, 2004Publication date: August 16, 2007Applicant: FUELCELL POWER, INC.Inventors: Ho-Suk Kim, Byung-Sun Hong, Mee-Nam Shinn
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Patent number: 7094489Abstract: The present invention relates to a Membrane Electrode Assembly (MEA) which significantly enhances power density as well as structural reliability and method for producing the same. More specifically, it relates to the Membrane Electrode Assembly which has a plurality of protuberances and method for producing the same. The present invention involves making supporting bodies to have a plurality of protuberances on one side of the supporting bodies, forming a catalyst layer on one side of the supporting bodies having the protuberances, interposing a polymer-electrolyte-membrane between the supporting bodies, aligning the supporting bodies for the protuberances to engage each other; and hot-pressing the aligned supporting bodies. The present invention can increase the area of a three-phase boundary in which oxidation-reduction reaction of hydrogen and oxygen occurs and decrease resistance to ion conduction; consequently fuel cells have the characteristic of a large output of power density.Type: GrantFiled: February 22, 2002Date of Patent: August 22, 2006Assignee: FuelCellPower Co., Ltd.Inventors: Mee-Nam Shinn, Byung-Sun Hong, Ho-Suk Kim
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Publication number: 20060068263Abstract: The present invention relates to a sealing structure for polymer electrolyte fuel cell, which comprises a bipolar plate with sealing groove to be filled with rubber using a dispenser, and a gasket interposed between the bipolar plate and a membrane electrode assembly. That is, according to the present invention, the thickness deviation in a gasket can be softened by interposing a gasket between a rubber ands a membrane electrode assembly after filling rubber in a sealing groove formed on a bipolar plate using a dispenser. Also, nonuniform stress distribution can be resolved because a gasket covers with a pressure despite the height deviation of rubber, and a stress is not directly transmitted to a membrane electrode assembly and dispersed by a gasket despite nonuniform stress distribution.Type: ApplicationFiled: June 23, 2003Publication date: March 30, 2006Inventors: Ho-Suk Kim, Mee-Nam Shinn, Byung-Sun Hong, Sung-Jin Oh, Cheol-Nam Yang, Yong-Jung Seo
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Publication number: 20050238800Abstract: The present invention relates to a Membrane Electrode Assembly (MEA) which significantly enhances power density as well as structural reliability and method for producing the same. More specifically, it relates to the Membrane Electrode Assembly which has a plurality of protuberances and method for producing the same. The present invention involves making supporting bodies to have a plurality of protuberances on one side of the supporting bodies, forming a catalyst layer on one side of the supporting bodies having the protuberances, interposing a polymer-electrolyte-membrane between the supporting bodies, aligning the supporting bodies for the protuberances to engage each other; and hot-pressing the aligned supporting bodies. The present invention can increase the area of a three-phase boundary in which oxidation-reduction reaction of hydrogen and oxygen occurs and decrease resistance to ion conduction; consequently fuel cells have the characteristic of a large output of power density.Type: ApplicationFiled: June 30, 2005Publication date: October 27, 2005Applicant: FUELCELLPOWER CO., LTDInventors: Mee-Nam Shinn, Byung-Sun Hong, Ho-Suk Kim
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Publication number: 20030114297Abstract: The present invention relates to a Membrane Electrode Assembly (MEA) which significantly enhances power density as well as structural reliability and method for producing the same. More specifically, it relates to the Membrane Electrode Assembly which has a plurality of protuberances and method for producing the same. The present invention involves making supporting bodies to have a plurality of protuberances on one side of the supporting bodies, forming a catalyst layer on one side of the supporting bodies having the protuberances, interposing a polymer-electrolyte-membrane between the supporting bodies, aligning the supporting bodies for the protuberances to engage each other; and hot-pressing the aligned supporting bodies. The present invention can increase the area of a three-phase boundary in which oxidation-reduction reaction of hydrogen and oxygen occurs and decrease resistance to ion conduction; consequently fuel cells have the characteristic of a large output of power density.Type: ApplicationFiled: September 12, 2002Publication date: June 19, 2003Inventors: Mee-Nam Shinn, Byung-Sun Hong, Ho-Suk Kim