Patents by Inventor Duck Whan Kim
Duck Whan 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).
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Patent number: 10411270Abstract: A bus plate unit is provided. The bus plate unit electrically connects a unit stack for a fuel cell having a (+) and a (?) stack terminal at both sides. The unit includes a (+) bus plate having a first end portion bent toward a first side surface of the unit stack and electrically coupled to a (+) stack terminal of the unit stack. A second end portion has a (+) bus terminal and abuts an upper first side of the unit stack. A (?) bus plate has a first end portion bent toward a second side surface of the unit stack and electrically coupled to the (?) stack terminal of the unit stack. A second end portion provides a (?) bus terminal and is proximate to the upper second side of the unit stack. An insulating layer encloses a surface of the (+) bus plate and the (?) bus plate.Type: GrantFiled: August 30, 2016Date of Patent: September 10, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Duck Whan Kim, Seungjun Yeon, JuHan Kim, Young Bum Kum
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Patent number: 10367209Abstract: A recycling system in which anode off gas of a fuel cell is recycled to a stack includes a purge flow path purging the anode off gas passing through the stack, and a sprayer spraying pure gas supplied from a fuel tank to the stack. The sprayer is disposed on a path where the anode off gas passing through the stack is discharged, the purge flow path is spaced a certain distance from the sprayer, and the anode off gas passing through the stack is mixed with the pure gas by suction force of the sprayer to be introduced to the stack, thereby being recycled.Type: GrantFiled: December 2, 2016Date of Patent: July 30, 2019Assignee: Hyundai Motor CompanyInventors: Bu Kil Kwon, Duck Whan Kim, Se Kwon Jung, Ik Jae Son, Hyo Sub Shim
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Publication number: 20190184502Abstract: A laser welding apparatus for laser-welding a first welding target and a second welding target seated on the first welding target includes a first jig on which the first welding target is seated, a second jig configured to press the first welding target such that the first welding target is adhered to the first jig, a third jig configured to press the second welding target such that the second welding target is adhered to the first welding target, one or more connection members connecting the second jig and the third jig such that the second welding target is pressed by the second jig when the first welding target is pressed by the first jig, and a laser head configured to laser-weld the first welding target and the second welding target by irradiating a laser beam to a specific welding part of the second welding target.Type: ApplicationFiled: July 18, 2018Publication date: June 20, 2019Inventors: Duck Whan Kim, Kwi Seong Jeong, Jung Han Yu, Young Bum Kum, Young Je Lee, Tae Min Lee, Yong Woo Choi, Chang Jun Lee
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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: 10084199Abstract: A fuel cell stack enclosure is provided that includes side covers configured to be joined with each of end of a stack module respectively. A lower cover is also configured to be provided under the stack module and formed to partially cover a lower portion and a first side portion of an outer surface of the side cove. An upper cover may be provided over the stack module, and be formed to partially cover an upper portion and a second side portion of the outer surface of the side cover to enclose the stack module along with the lower cover while joining with the side covers.Type: GrantFiled: August 26, 2014Date of Patent: September 25, 2018Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Duck Whan Kim, Young Bum Kum, Jung Do Suh, Yong Suk Heo, Jung Han Yu
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Publication number: 20180248207Abstract: A manifold block mounted to a fuel cell stack for supplying and distributing air and hydrogen to the stack, the manifold block comprises: a main body including a hydrogen inlet, a hydrogen outlet, an air inlet and an air outlet; a hydrogen outlet cover welded to an outer surface of the main body and including a condensation chamber connected to the hydrogen outlet; an air inlet cover welded to an inner surface of the main body and including an air inflow portion connected to the air inlet; and an air outlet cover welded to the inner surface of the main body and including an air outflow portion connected to the air outlet.Type: ApplicationFiled: November 6, 2017Publication date: August 30, 2018Inventors: Duck Whan KIM, Jung Han YU, Young Bum KUM, Kwi Seong JEONG
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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: 10056641Abstract: A fuel cell for a vehicle includes seats disposed on a side of a separation plate and having a recessed bottom and inclined sides connecting the edges of the bottom and the separation plate at an angle. Gaskets are projected along the seats on the side of the separation plate. Fastening bars are seated in the seats with the gaskets projected thereon, in the shape of a strip fastening the fuel cell and have a body being in close contact with the bottom and flanges being in close contact with an inclined side.Type: GrantFiled: August 12, 2014Date of Patent: August 21, 2018Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Duck Whan Kim, Yong Suk Heo
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Patent number: 10033061Abstract: An end plate for a fuel cell is provided in which a main block is configured to form a body and support a fuel cell at a predetermined pressure and a subplate is configured to include a material having reducibility higher than that of the main block and to adhere to one side of the main block. Additionally, an insulating part encloses the main block and the subplate.Type: GrantFiled: September 17, 2014Date of Patent: July 24, 2018Assignee: Hyundai Motor CompanyInventors: Yong Suk Heo, Jung Do Suh, Duck Whan Kim
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Publication number: 20180175412Abstract: A humidifier integrated stack includes: unit cells including a fuel electrode and an air electrode; a stack module in which the unit cells are stacked; a manifold block having a predetermined space, an air inlet receiving air to be supplied to the air electrode from the outside, and an air outlet communicating with the predetermined space and discharging the air discharged from the air electrode to the outside; and a humidifying member communicating with the inlet in the space of the manifold block, and guiding the air supplied through the inlet to the air electrode through an internal hollow thereof, wherein the manifold block provides the space that allows the air discharged from the air electrode to supply moisture to the humidifying member while passing through the predetermined space and being discharged to the outlet, so as to humidify the air flowing through the hollow of the humidifying member.Type: ApplicationFiled: October 3, 2017Publication date: June 21, 2018Inventors: Duck Whan KIM, Hyun Yoo KIM, Jung Han YU
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Publication number: 20180166731Abstract: A fuel cell system includes a fuel cell stack including an air electrode and a fuel electrode, a stack housing having a hollow therein to accommodate the fuel cell stack in the hollow, an air compressor configured to pump air to supply the air to the air electrode, a ventilation pipe connecting an entrance of the air compressor and the hollow, and at least one vent hole provided on an outer wall of the stack housing such that the hollow and an outside of the stack housing communicate with each other. An interior of the stack housing is ventilated by lowering of a pressure at the entrance of the air compressor, which is generated as the air compressor is operated, while air outside the stack housing is suctioned into the entrance of the air compressor after passing through the vent hole, the hollow, and the ventilation pipe.Type: ApplicationFiled: August 29, 2017Publication date: June 14, 2018Inventors: Jung Han YU, Yong Suk HEO, Duck Whan KIM, Kwi Seong JEONG
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Publication number: 20180166712Abstract: An air shut-off valve apparatus for a fuel cell system and a method of controlling the same are provided. In particular, hydrogen injected into a fuel cell stack is discharged by being diluted with external air when starting the fuel cell system. The apparatus includes a valve body that has an inlet air path connected to a cathode of the fuel cell stack and through which air injected into the fuel cell stack flows, and an outlet air path through which air discharged from the fuel cell stack flows. A bypass body is provided and includes a bypass air path that connects the inlet air path and the outlet air path and a valve flap is disposed at the valve body and opens and closes the inlet and outlet air paths at a first side thereof, and the bypass air path at a second side thereof.Type: ApplicationFiled: June 20, 2017Publication date: June 14, 2018Inventors: Jeong Hee Park, Byeong Seung Lee, Duck Whan Kim
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Patent number: 9899697Abstract: A manifold block assembly for a fuel cell vehicle mounted on a fuel cell stack and supplying air and hydrogen to the stack, includes a manifold block in which a hydrogen discharge path connected to a hydrogen line formed in the stack, an air discharge path connected to an air line formed in the stack, and a watertight bulkhead are integrally formed with each other. The manifold block assembly further includes a hydrogen inflow pipe configured to be attached to the manifold block and connected to the hydrogen line formed in the stack. The manifold block assembly also includes an air inflow pipe configured to be attached to the manifold block and connected to the air line formed in the stack.Type: GrantFiled: September 11, 2015Date of Patent: February 20, 2018Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventor: Duck Whan Kim
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Publication number: 20180026278Abstract: A recycling system in which anode off gas of a fuel cell is recycled to a stack includes a purge flow path purging the anode off gas passing through the stack, and a sprayer spraying pure gas supplied from a fuel tank to the stack. The sprayer is disposed on a path where the anode off gas passing through the stack is discharged, the purge flow path is spaced a certain distance from the sprayer, and the anode off gas passing through the stack is mixed with the pure gas by suction force of the sprayer to be introduced to the stack, thereby being recycled.Type: ApplicationFiled: December 2, 2016Publication date: January 25, 2018Inventors: Bu Kil Kwon, Duck Whan Kim, Se Kwon Jung, Ik Jae Son, Hyo Sub Shim
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Patent number: 9871261Abstract: A fuel cell stack enclosure includes: a lower housing disposed under a fuel cell stack and having a bottom plate portion provided with a water outlet therein; a sealing cap closing the water outlet from an outside of the lower housing; and an elastic member elastically pulling the sealing cap toward the bottom plate portion of the lower housing.Type: GrantFiled: May 20, 2016Date of Patent: January 16, 2018Assignees: HYUNDAI MOTOR COMPANY, WOOSHIN INDUSTRIAL CO., LTD.Inventors: Jung Han Yu, Young Woo Noh, Jung Do Suh, Duck Whan Kim, Young Bum Kum, Chang Jun Lee, Tae Min Lee, Yong Woo Choi
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Publication number: 20170338498Abstract: A bus plate unit is provided. The bus plate unit electrically connects a unit stack for a fuel cell having a (+) and a (?) stack terminal at both sides. The unit includes a (+) bus plate having a first end portion bent toward a first side surface of the unit stack and electrically coupled to a (+) stack terminal of the unit stack. A second end portion has a (+) bus terminal and abuts an upper first side of the unit stack. A (?) bus plate has a first end portion bent toward a second side surface of the unit stack and electrically coupled to the (?) stack terminal of the unit stack. A second end portion provides a (?) bus terminal and is proximate to the upper second side of the unit stack. An insulating layer encloses a surface of the (+) bus plate and the (?) bus plate.Type: ApplicationFiled: August 30, 2016Publication date: November 23, 2017Inventors: Duck Whan Kim, Seungjun Yeon, JuHan Kim, Young Bum Kum
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Patent number: 9698438Abstract: A ventilation apparatus includes: a controller that determines whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and varies a degree of opening of a valve provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination.Type: GrantFiled: December 3, 2014Date of Patent: July 4, 2017Assignees: Hyundai Motor Company, Wooshin Industrial Co., Ltd.Inventors: Jung Han Yu, Jung Do Suh, Young Bum Kum, Duck Whan Kim, Chang Jun Lee, Tae Min Lee, Yong Woo Choi
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Publication number: 20170170498Abstract: A fuel cell stack enclosure includes: a lower housing disposed under a fuel cell stack and having a bottom plate portion provided with a water outlet therein; a sealing cap closing the water outlet from an outside of the lower housing; and an elastic member elastically pulling the sealing cap toward the bottom plate portion of the lower housing.Type: ApplicationFiled: May 20, 2016Publication date: June 15, 2017Applicants: HYUNDAI MOTOR COMPANY, Wooshin Industrial Co., Ltd., Wooshin Industrial Co., Ltd.Inventors: Jung Han YU, Young Woo NOH, Jung Do SUH, Duck Whan KIM, Young Bum KUM, Chang Jun LEE, Tae Min LEE, Yong Woo CHOI
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Patent number: 9660287Abstract: An apparatus for preventing deformation of a fuel cell stack is provided. The apparatus includes a support unit, respective ends of which are connected to first endplates of a pair of stacked fuel cell stacks. The apparatus further includes a support protrusion that protrudes from a surface of the support unit and extends through a gap between the pair of fuel cell stacks.Type: GrantFiled: August 17, 2015Date of Patent: May 23, 2017Assignee: Hyundai Motor CompanyInventors: Yong Suk Heo, Jung Do Suh, Duck Whan Kim
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Patent number: 9601797Abstract: A fuel cell stack manifold having an ejector function of which the manufacturing cost and the weight can be reduced by optimizing hydrogen supply and recirculation channels and removing other members. hardware without a separate ejector structure for additionally attaching an ejector, of which the productivity can be improved by removing from an ejector assembly process. The fuel cell system minimizes joints through which hydrogen may leak, by implementing a new structure of a manifold added with an ejector function by integrally forming/manufacturing a stack manifold having a venturi and diffuser structure and adding a nozzle thereto.Type: GrantFiled: October 21, 2014Date of Patent: March 21, 2017Assignee: Hyundai Motor CompanyInventors: Se Kwon Jung, Duck Whan Kim, Yong Gyu Noh, Bu Kil Kwon