Patents by Inventor Se Joon Im
Se Joon Im 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: 11846587Abstract: A tomographic imaging system includes a light source, a light irradiation unit that irradiates light to a transparent material composite thin film sample and a reference mirror and acquires an interference signal between light reflected and scattered from the sample and light reflected from the reference mirror, a light measuring unit that measures the interference signal acquired by the light irradiation unit, a light transmission unit that transmits the light output from the light source to the light irradiation unit and transmits the interference signal of the light transmitted from the light irradiation unit to the light measuring unit; and a signal processing apparatus that converts the interference signal of the sample, outputs the converted interference signal as a tomographic image, and monitors the interference signal acquired by the light irradiation unit to modulate intensity and a polarization state of the light input to the light irradiation unit.Type: GrantFiled: February 11, 2022Date of Patent: December 19, 2023Assignees: Hyundai Motor Company, Kia Corporation, Yonsei University, University-Industry Foundatoin (UIF)Inventors: Jusung Han, Jiseok Hwang, Se Joon Im, Chulmin Joo, Seungri Song, Baek Cheon Seong
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Publication number: 20230187673Abstract: A membrane electrode assembly and a method of manufacturing an electricity generating assembly include a pair of gas diffusion layers disposed on both surfaces of the membrane electrode assembly. Coupling agents are applied on surfaces of the gas diffusion layers, modifying surfaces of the gas diffusion layers. A coupling agent-friendly adhesive is applied to the surfaces of the gas diffusion layers to which the coupling agents are applied, forming adhesion layers on surfaces of the gas diffusion layers. The gas diffusion layers are stacked on the surfaces of the membrane electrode assembly, causing the adhesion layers to come into contact with the first and second surfaces of the membrane electrode assembly.Type: ApplicationFiled: November 9, 2022Publication date: June 15, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Kweon Ju Park, Se Joon Im, Ju Young Lee, Min June Choi, Kook Il Han, Ju Hee Lee
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Publication number: 20230003645Abstract: A tomographic imaging system includes a light source, a light irradiation unit that irradiates light to a transparent material composite thin film sample and a reference mirror and acquires an interference signal between light reflected and scattered from the sample and light reflected from the reference mirror, a light measuring unit that measures the interference signal acquired by the light irradiation unit, a light transmission unit that transmits the light output from the light source to the light irradiation unit and transmits the interference signal of the light transmitted from the light irradiation unit to the light measuring unit; and a signal processing apparatus that converts the interference signal of the sample, outputs the converted interference signal as a tomographic image, and monitors the interference signal acquired by the light irradiation unit to modulate intensity and a polarization state of the light input to the light irradiation unit.Type: ApplicationFiled: February 11, 2022Publication date: January 5, 2023Inventors: Jusung Han, Jiseok Hwang, Se Joon Im, Chulmin Joo, Seungri Song, Baek Cheon Seong
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Patent number: 10847819Abstract: An apparatus for preventing moisture condensation includes a fuel cell stack and an enclosure in which the fuel cell stack is disposed. A heater and a temperature sensor are provided in the enclosure. A controller is configured to control the heater to be turned on when an insulation resistance between the fuel cell stack and the enclosure is less than a preset resistance value. The controller controls the heater not to be turned on when a surface temperature of the enclosure measured by the temperature sensor exceeds a preset temperature.Type: GrantFiled: July 24, 2018Date of Patent: November 24, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jung Han Yu, Jung Do Suh, Ju Han Kim, Duck Whan Kim, Se Joon Im, Young Woo Noh
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Patent number: 10461348Abstract: A fuel cell system and a method of controlling the same are provided. The fuel cell system includes a supplying pipe that supplies hydrogen and air to a stack and a gas concentration sensor that senses hydrogen and air impurities supplied to the supplying pipe. A supplying valve is disposed in the supplying pipe to adjust the hydrogen and air supply and a discharging pipe discharges the hydrogen and the air from the stack. A discharging valve is disposed in the discharging pipe to adjust the discharging of the hydrogen and the air. A controller operates with the gas concentration sensor to detect introduction of the impurities. Exhaust valves are disposed at the front and rear end of the stack to remove a polluted fuel when the impurities are introduced. When performance deteriorates due to the impurities, a cause of deterioration is determined, and stack performance is recovered.Type: GrantFiled: May 2, 2016Date of Patent: October 29, 2019Assignee: Hyundai Motor CompanyInventors: Se Joon Im, Jun Yeol Paek
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Publication number: 20180331377Abstract: An apparatus for preventing moisture condensation includes a fuel cell stack and an enclosure in which the fuel cell stack is disposed. A heater and a temperature sensor are provided in the enclosure. A controller is configured to control the heater to be turned on when an insulation resistance between the fuel cell stack and the enclosure is less than a preset resistance value. The controller controls the heater not to be turned on when a surface temperature of the enclosure measured by the temperature sensor exceeds a preset temperature.Type: ApplicationFiled: July 24, 2018Publication date: November 15, 2018Inventors: Jung Han YU, Jung Do SUH, Ju Han KIM, Duck Whan KIM, Se Joon IM, Young Woo NOH
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Patent number: 10062914Abstract: An apparatus for preventing moisture condensation includes a fuel cell stack and an enclosure in which the fuel cell stack is disposed. A heater and a temperature sensor are provided in the enclosure. A controller is configured to control the heater to be turned on when an insulation resistance between the fuel cell stack and the enclosure is less than a preset resistance value. The controller controls the heater not to be turned on when a surface temperature of the enclosure measured by the temperature sensor exceeds a preset temperature.Type: GrantFiled: March 30, 2015Date of Patent: August 28, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Jung Han Yu, Jung Do Suh, Ju Han Kim, Duck Whan Kim, Se Joon Im, Young Woo Noh
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Patent number: 9819034Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.Type: GrantFiled: November 15, 2016Date of Patent: November 14, 2017Assignee: Hyundai Motor CompanyInventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
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Publication number: 20170170501Abstract: A fuel cell system and a method of controlling the same are provided. The fuel cell system includes a supplying pipe that supplies hydrogen and air to a stack and a gas concentration sensor that senses hydrogen and air impurities supplied to the supplying pipe. A supplying valve is disposed in the supplying pipe to adjust the hydrogen and air supply and a discharging pipe discharges the hydrogen and the air from the stack. A discharging valve is disposed in the discharging pipe to adjust the discharging of the hydrogen and the air. A controller operates with the gas concentration sensor to detect introduction of the impurities. Exhaust valves are disposed at the front and rear end of the stack to remove a polluted fuel when the impurities are introduced. When performance deteriorates due to the impurities, a cause of deterioration is determined, and stack performance is recovered.Type: ApplicationFiled: May 2, 2016Publication date: June 15, 2017Inventors: Se Joon Im, Jun Yeol Paek
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Publication number: 20170141418Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.Type: ApplicationFiled: November 15, 2016Publication date: May 18, 2017Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
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Publication number: 20160380281Abstract: A device and a method are provided for controlling an operation of a fuel cell system to improve a momentary output of a fuel cell system and decrease a performance deviation between fuel cells. The device momentarily reduces a cell voltage of a fuel cell or changes a fuel cell system to a state close to a shut-down, return the fuel cell system to a normal condition again, and then enable the fuel cell system to be operated normally by applying the “saw-tooth phenomenon” and the “hysteresis phenomenon.” Thus, a momentary output of the fuel cell system is improved to performance of a highest output level or more expressible in a previous state and a performance deviation between fuel cells is decreased.Type: ApplicationFiled: December 6, 2015Publication date: December 29, 2016Inventor: Se Joon Im
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Patent number: 9496566Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.Type: GrantFiled: November 29, 2012Date of Patent: November 15, 2016Assignee: Hyundai Motor CompanyInventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
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Patent number: 9466846Abstract: A fuel cell system is disclosed. More specifically, the fuel cell system may include a stack that includes an electrical generation assembly of a fuel cell, an air supply unit that supplies air to a cathode of the fuel cell, a humidifier that humidifies exhaust air that is exhausted from the cathode and supply air that is supplied from the air supply unit, a hydrogen supply unit that supplies the anode of the fuel cell with hydrogen, and a water trap that traps condensate that is generated by the anode and exhausts it. In particular, the supply air is supplied to an upstream side of the humidifier and the condensate that is trapped in the water trap is supplied to an upstream side of the humidifier.Type: GrantFiled: June 26, 2012Date of Patent: October 11, 2016Assignee: Hyundai Motor CompanyInventors: Hyo Sub Shim, Se Joon Im, HyunJae Lee, Deukkuen Ahn, Jong Hyun Lee
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Patent number: 9455458Abstract: A hydrogen supply apparatus of fuel cell stack is provided. In particular, a plurality of unit cells includes a membrane electrode assembly, a separating plate disposed on two sides of the membrane electrode assembly, a coolant path, an air path, a fuel path, and an air inlet manifold communicated with the air path. An end plate is disposed on each end of the plurality of unit cells and forms an air inlet manifold in a location corresponding to the air inlet manifold of the separating plate. Additionally, a hydrogen supply apparatus is provided in the air inlet manifold of the separating plate and the air inlet manifold of the end plate that selectively supplies additional hydrogen to the cathode through the air path when needed.Type: GrantFiled: October 24, 2014Date of Patent: September 27, 2016Assignee: Hyundai Motor CompanyInventors: Junghan Yu, Hyun Suk Choo, Se Joon Im
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Publication number: 20160149237Abstract: An apparatus for preventing moisture condensation includes a fuel cell stack and an enclosure in which the fuel cell stack is disposed. A heater and a temperature sensor are provided in the enclosure. A controller is configured to control the heater to be turned on when an insulation resistance between the fuel cell stack and the enclosure is less than a preset resistance value. The controller controls the heater not to be turned on when a surface temperature of the enclosure measured by the temperature sensor exceeds a preset temperature.Type: ApplicationFiled: March 30, 2015Publication date: May 26, 2016Inventors: Jung Han YU, Jung Do SUH, Ju Han KIM, Duck Whan KIM, Se Joon IM, Young Woo NOH
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Publication number: 20150188164Abstract: A hydrogen supply apparatus of fuel cell stack is provided. In particular, a plurality of unit cells includes a membrane electrode assembly, a separating plate disposed on two sides of the membrane electrode assembly, a coolant path, an air path, a fuel path, and an air inlet manifold communicated with the air path. An end plate is disposed on each end of the plurality of unit cells and forms an air inlet manifold in a location corresponding to the air inlet manifold of the separating plate. Additionally, a hydrogen supply apparatus is provided in the air inlet manifold of the separating plate and the air inlet manifold of the end plate that selectively supplies additional hydrogen to the cathode through the air path when needed.Type: ApplicationFiled: October 24, 2014Publication date: July 2, 2015Inventors: Junghan Yu, Hyun Suk Choo, Se Joon Im
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Publication number: 20140065507Abstract: Disclosed is a stack for simulating a cell voltage reversal behavior in a fuel cell. The stack is configured to have a structure in which a separator of a portion of a plurality of cells in the stack have an inlet of a hydrogen flow field partially blocked to induce hydrogen starvation only in the portion of the plurality of cells.Type: ApplicationFiled: November 29, 2012Publication date: March 6, 2014Applicant: HYUNDAI MOTOR COMPANYInventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Se Joon Im
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Publication number: 20130130135Abstract: A fuel cell system is disclosed. More specifically, the fuel cell system may include a stack that includes an electrical generation assembly of a fuel cell, an air supply unit that supplies air to a cathode of the fuel cell, a humidifier that humidifies exhaust air that is exhausted from the cathode and supply air that is supplied from the air supply unit, a hydrogen supply unit that supplies the anode of the fuel cell with hydrogen, and a water trap that traps condensate that is generated by the anode and exhausts it. In particular, the supply air is supplied to an upstream side of the humidifier and the condensate that is trapped in the water trap is supplied to an upstream side of the humidifier.Type: ApplicationFiled: June 26, 2012Publication date: May 23, 2013Applicant: HYUNDAI MOTOR COMPANYInventors: Hyo Sub Shim, Se Joon Im, HyunJae Lee, Deukkuen Ahn, Jong Hyun Lee
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Publication number: 20130029238Abstract: The present invention provides a startup control device and method for a fuel cell system. The startup control device includes a concentration meter, a hydrogen feed rate controller, and a controller. The concentration meter measures the concentration of oxygen located in the anode of a fuel cell stack. The hydrogen feed rate controller is disposed at an inlet of the anode. The controller receives an oxygen concentration signal value from the concentration meter while controlling the hydrogen feed rate controller to adjust a hydrogen feed rate to the anode.Type: ApplicationFiled: August 1, 2011Publication date: January 31, 2013Applicant: HYUNDAI MOTOR COMPANYInventors: Se Joon Im, Jae Jun Ko, Young Min Kim, Ik Jae Son, Jong Hyun Lee
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Publication number: 20120141896Abstract: Disclosed are a fuel cell system and a method of controlling the system to efficiently remove air flowing into an anode side and a cathode side during a stop of a fuel cell vehicle to prevent an overvoltage of a fuel cell stack that is generated at the time of a start-up thereby enhancing a durability of a fuel cell stack. The fuel cell system illustratively includes a concentration detector mounted at a cathode side and/or an anode side of a fuel cell stack to detect the oxygen concentration in the air; a controller that outputs a control signal to release air when the oxygen concentration is greater than a set value; and an absorber that absorbs air from the cathode side and/or the anode side through an absorption line in response to the control signal output from the controller to thereby release the absorbed air to the outside.Type: ApplicationFiled: August 1, 2011Publication date: June 7, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Se Joon Im, Jong Hyun Lee