Patents by Inventor Woo Suk Sung
Woo Suk Sung 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: 11955701Abstract: Disclosed is a wearable device including an outer housing including a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface, wherein a metal frame is formed on at least a portion of the side surface, a display having at least a portion that is exposed through the first surface of the outer housing, a printed circuit board (PCB), a communication circuit, and a ground area, wherein the metal frame is electrically connected to the communication circuit at a first point and a second point of the metal frame, and to the ground area at a third point having a different electrical length with respect to the first point and the second point, and wherein the communication circuit is configured to transmit and/or receive a signal in a first frequency band by a first electrical path formed between the first point and the third point, and a signal in a second frequency bandType: GrantFiled: July 12, 2021Date of Patent: April 9, 2024Assignee: Samsung Electronics Co., LtdInventors: Sang Bong Sung, Woo Suk Kang, Se Woong Kim, Chae Up Yoo, Jae Bong Chun
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Patent number: 10739407Abstract: A method and system for estimating a state of health using battery model parameters are provided. The system includes a battery model parameter extractor that is configured to extract liquid-phase diffusivity of Li-ion parameters and a storage unit that is configured to store a mapping table in which states of health (SOH) for each liquid-phase diffusivity of Li-ion parameter are mapped. In addition, a SOH estimator is configured to use the mapping table to estimate the SOH that corresponds to a liquid-phase diffusivity of Li-ion extracted from the battery model parameter extractor.Type: GrantFiled: April 17, 2019Date of Patent: August 11, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Woo Suk Sung
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Patent number: 10466304Abstract: A method for estimating a state of health of a battery includes calculating a measured value of a charging required time for each of preset voltage intervals in a preset voltage range in which the battery is charged; calculating an estimated value of the charging required time for each of the voltage intervals by a preset battery meta-model; and estimating the SOH having lowest error between the measured value of the charging required time and the estimating value of the charging required time by allowing the estimated value of the charging required time to iteratively approach the measured value of the charging required time.Type: GrantFiled: December 7, 2016Date of Patent: November 5, 2019Assignee: HYUNDAI MOTOR COMPANYInventor: Woo Suk Sung
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Publication number: 20190250215Abstract: A method and system for estimating a state of health using battery model parameters are provided. The system includes a battery model parameter extractor that is configured to extract liquid-phase diffusivity of Li-ion parameters and a storage unit that is configured to store a mapping table in which states of health (SOH) for each liquid-phase diffusivity of Li-ion parameter are mapped. In addition, a SOH estimator is configured to use the mapping table to estimate the SOH that corresponds to a liquid-phase diffusivity of Li-ion extracted from the battery model parameter extractor.Type: ApplicationFiled: April 17, 2019Publication date: August 15, 2019Inventor: Woo Suk Sung
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Patent number: 10310019Abstract: A method and system for estimating a state of health using battery model parameters are provided. The system includes a battery model parameter extractor that is configured to extract liquid-phase diffusivity of Li-ion parameters and a storage unit that is configured to store a mapping table in which states of health (SOH) for each liquid-phase diffusivity of Li-ion parameter are mapped. In addition, a SOH estimator is configured to use the mapping table to estimate the SOH that corresponds to a liquid-phase diffusivity of Li-ion extracted from the battery model parameter extractor.Type: GrantFiled: March 3, 2015Date of Patent: June 4, 2019Assignee: Hyundai Motor CompanyInventor: Woo Suk Sung
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Patent number: 10168390Abstract: Provided are a weighted least square (WLS)-based state of health (SOH) estimating system and method. A battery management system according to an aspect of the present invention includes a measurer measuring a time required for charging at each of preset voltage intervals within a preset voltage range in which a battery is charged with a constant current; and an estimator estimating a parameter using an estimated value of time required for charging according to a preset metamodel and a measured value of a time required for charging after completion of the constant current charging.Type: GrantFiled: December 8, 2016Date of Patent: January 1, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Woo Suk Sung
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Publication number: 20180106868Abstract: A method for estimating a state of health of a battery includes calculating a measured value of a charging required time for each of preset voltage intervals in a preset voltage range in which the battery is charged; calculating an estimated value of the charging required time for each of the voltage intervals by a preset battery meta-model; and estimating the SOH having lowest error between the measured value of the charging required time and the estimating value of the charging required time by allowing the estimated value of the charging required time to iteratively approach the measured value of the charging required time.Type: ApplicationFiled: December 7, 2016Publication date: April 19, 2018Applicant: HYUNDAI MOTOR COMPANYInventor: Woo Suk Sung
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Publication number: 20180031642Abstract: Provided are a weighted least square (WLS)-based state of health (SOH) estimating system and method. A battery management system according to an aspect of the present invention includes a measurer measuring a time required for charging at each of preset voltage intervals within a preset voltage range in which a battery is charged with a constant current; and an estimator estimating a parameter using an estimated value of time required for charging according to a preset metamodel and a measured value of a time required for charging after completion of the constant current charging.Type: ApplicationFiled: December 8, 2016Publication date: February 1, 2018Applicants: Hyundai Motor Company, Kia Motors CorporationInventor: Woo Suk SUNG
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Patent number: 9612291Abstract: A system and method for more accurately measuring an internal resistance of a battery for a vehicle are provided. The method includes measuring, by a controller, current-voltage pairs for the battery and calculating a correlation between current and voltage in the measured current-voltage pairs. In addition, the internal resistance of the battery is measured using the current-voltage pairs having the correlation equal to or greater than a preset threshold.Type: GrantFiled: March 7, 2015Date of Patent: April 4, 2017Assignee: Hyundai Motor CompanyInventors: Woo Suk Sung, Do Sung Hwang
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Publication number: 20160131715Abstract: A method and system for estimating a state of health using battery model parameters are provided. The system includes a battery model parameter extractor that is configured to extract liquid-phase diffusivity of Li-ion parameters and a storage unit that is configured to store a mapping table in which states of health (SOH) for each liquid-phase diffusivity of Li-ion parameter are mapped. In addition, a SOH estimator is configured to use the mapping table to estimate the SOH that corresponds to a liquid-phase diffusivity of Li-ion extracted from the battery model parameter extractor.Type: ApplicationFiled: March 3, 2015Publication date: May 12, 2016Inventor: Woo Suk Sung
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Publication number: 20160116546Abstract: A system and method for more accurately measuring an internal resistance of a battery for a vehicle are provided. The method includes measuring, by a controller, current-voltage pairs for the battery and calculating a correlation between current and voltage in the measured current-voltage pairs. In addition, the internal resistance of the battery is measured using the current-voltage pairs having the correlation equal to or greater than a preset threshold.Type: ApplicationFiled: March 7, 2015Publication date: April 28, 2016Inventors: Woo Suk Sung, Do Sung Hwang
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Publication number: 20150324286Abstract: A memory management method in an embedded system is provided. The method includes a first iteration step that sequentially allocates and deletes memory, and recognizes an area where the first to last sections of the memory were located as a hollow space list A second iteration step sequentially allocates the memory in an area of the hollow space list by starting the memory allocation from an end point of the hollow space list. When the hollow space list is insufficient, allocates a memory section outside the area of the hollow space list, re-recognizes the hollow space list by expanding to the area when the last section of the memory was located. When the hollow space list is sufficient during the memory allocation, maintains the hollow space list, and sequentially deletes the allocated memory. Further, an initialization step initializes the hollow space list of when the hollow space list is re-recognized.Type: ApplicationFiled: October 8, 2014Publication date: November 12, 2015Inventor: Woo Suk Sung
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Patent number: 9034532Abstract: A method is provided for cold starting a fuel cell vehicle, the method preferably including supplying reactant gases for generating electricity to a fuel cell stack, and simultaneously performing a motoring process for operating the fuel cell vehicle by applying a portion of stack current generated in the fuel cell stack to a drive motor and a heating process for warming up the fuel cell stack by applying the remaining available stack current to a heater for heating coolant. Preferred methods of the invention can provide a more rapid and efficient cold start to the fuel cell vehicle.Type: GrantFiled: November 16, 2009Date of Patent: May 19, 2015Assignee: Hyundai Motor CompanyInventors: Woo Suk Sung, Sung Gone Yoon, Yo In Song
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Patent number: 8956774Abstract: A method for shutting down a fuel cell system includes: determining whether an outside air temperature is below a first predetermined reference temperature when a shutdown of a fuel cell system is detected; warming up the fuel cell stack by operating balance of plant components of the fuel cell system and a stack load using the power of the fuel cell stack, while the supply of hydrogen to the fuel cell stack is normally maintained, when the outside air temperature is below the first reference temperature; removing water in the fuel cell stack by passing air supplied by an air supply system through the stack load to supply heated air to a cathode of the fuel cell stack; and shutting down the fuel cell system by cutting off the supply of air after the removal of water. The method can eliminate or reduce cold start failure.Type: GrantFiled: November 25, 2009Date of Patent: February 17, 2015Assignee: Hyundai Motor CompanyInventors: Sang Uk Kwon, Nam Woo Lee, Jae Jun Ko, Woo Suk Sung
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Patent number: 8920987Abstract: The present invention provides a fuel cell system, which reduces the temperature of exhaust gas discharged from a fuel cell stack to a humidifier to increase the humidity thereof when the fuel cell stack operates at high temperature and high power, and thus improves the humidification performance for air as an oxidant in the humidifier and improves the performance of the fuel cell stack. For this purpose, the present invention provides a fuel cell system in which an intercooler is installed in an exhaust gas pipe, which connects a cathode outlet of the fuel cell stack and the humidifier, to cool the exhaust gas as a water supply source of the humidifier such that the intercooler reduces the temperature of the exhaust gas and, at the same time, increase the humidity thereof, thus improving humidification performance for air as an oxidant in the humidifier.Type: GrantFiled: November 12, 2009Date of Patent: December 30, 2014Assignee: Hyundai Motor CompanyInventors: Dong Hun Lee, Seo Ho Choi, Woo Suk Sung
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Patent number: 8504219Abstract: A telematics device for an electric vehicle and a remote air-conditioning control method thereof are provided. A vehicle driver remote adjusts an indoor temperature of the electric vehicle by driving an air-conditioning unit of the vehicle during the battery charging, so that a travelable distance based on the battery life can be maximized.Type: GrantFiled: November 19, 2010Date of Patent: August 6, 2013Assignee: Hyundai Motor CompanyInventors: Myung Hoe Kim, Woo Sung Kim, Do Sung Hwang, Hyung Jin Yoon, Sung Yun Kim, Woo Suk Sung, Ji-Hwon Kim
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Patent number: 8497045Abstract: The present invention provides a purge system for a fuel cell, which can reduce the time required to thaw a frozen valve during cold start-up and reduce the whole start-up time, thus improving the cold start performance. In preferred embodiments, the present invention provides a purge system for a fuel cell with improved cold start performance, the system preferably including a main pipe connected to a purge gas outlet of a fuel cell stack to discharge a purge gas purging the fuel cell stack and impurities; an auxiliary pipe branched from the main pipe; a purge valve installed in each of the main pipe and the auxiliary pipe to perform an purge operation; a cut-off valve installed at an upstream side of the purge valve in the auxiliary pipe; and a controller for controlling the operation of the purge valves and the cut-off valve.Type: GrantFiled: August 31, 2010Date of Patent: July 30, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jae Jun Ko, Nam Woo Lee, Young Min Kim, Sang Uk Kwon, Ik Jae Son, Woo Suk Sung, Jong Hyun Lee
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Patent number: 8492051Abstract: The present invention provides a novel integrated valve system for a fuel cell stack, in which an air shut-off valve for preventing the inflow of air when a fuel cell shuts down and a dry gas purge valve for improving cold startability are coaxially coupled to each other so that the air shut-off valve and the dry gas purge valve simultaneously open or close.Type: GrantFiled: November 23, 2009Date of Patent: July 23, 2013Assignee: Hyundai Motor CompanyInventors: Woo Suk Sung, Jae Jun Ko, Sae Hoon Kim
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Publication number: 20120101659Abstract: A telematics device for an electric vehicle and a remote air-conditioning control method thereof are provided. A vehicle driver remote adjusts an indoor temperature of the electric vehicle by driving an air-conditioning unit of the vehicle during the battery charging, so that a travelable distance based on the battery life can be maximized.Type: ApplicationFiled: November 19, 2010Publication date: April 26, 2012Applicant: HYUNDAI MOTOR COMPANYInventors: Myung Hoe Kim, Woo Sung Kim, Do Sung Hwang, Hyung Jin Yoon, Sung Yun Kim, Woo Suk Sung, Ji-Hwon Kim
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Publication number: 20110097637Abstract: The present invention provides a purge system for a fuel cell, which can reduce the time required to thaw a frozen valve during cold start-up and reduce the whole start-up time, thus improving the cold start performance. In preferred embodiments, the present invention provides a purge system for a fuel cell with improved cold start performance, the system preferably including a main pipe connected to a purge gas outlet of a fuel cell stack to discharge a purge gas purging the fuel cell stack and impurities; an auxiliary pipe branched from the main pipe; a purge valve installed in each of the main pipe and the auxiliary pipe to perform an purge operation; a cut-off valve installed at an upstream side of the purge valve in the auxiliary pipe; and a controller for controlling the operation of the purge valves and the cut-off valve.Type: ApplicationFiled: August 31, 2010Publication date: April 28, 2011Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Jae Jun Ko, Nam Woo Lee, Young Min Kim, Sang Uk Kwon, Ik Jae Son, Woo Suk Sung, Jong Hyun Lee