Patents by Inventor Boung Ho Min
Boung Ho Min 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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Publication number: 20240030470Abstract: A fuel cell system includes a fuel cell connected to a main bus through a converter, an auxiliary power supply connected in parallel to the main bus at an output side of the converter, and a controller electrically connected to the converter and configured to control the converter to adjust output of the fuel cell by changing a target input voltage of the converter, configured to increase the target input voltage of the converter when an output voltage of the converter is a set maximum value or more than the set maximum value, and configured to decrease the target input voltage of the converter when the output voltage of the converter is a set minimum value or less the set minimum value. Furthermore, a method of controlling the fuel cell system is disclosed.Type: ApplicationFiled: December 5, 2022Publication date: January 25, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Jae Hyung LEE, Woo Young LEE, Boung Ho MIN, Dong Hun LEE
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Patent number: 11489180Abstract: Disclosed is a system for determining a hydrogen supply failure of a fuel cell, the system including: a fuel cell, a plurality of hydrogen tanks having hydrogen, a hydrogen supply line connected to the hydrogen tanks and supplying hydrogen from the hydrogen tanks to the fuel cell, a plurality of tank valves mounted on the hydrogen tanks, respectively, and discharging hydrogen in the hydrogen tanks to the hydrogen supply line when opening, a pressure sensor sensing pressure in the hydrogen supply line, and a determiner determining poor opening of the hydrogen tanks on the basis of pressure information sensed by the pressure sensor.Type: GrantFiled: March 24, 2020Date of Patent: November 1, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Boung Ho Min, Dong Hun Lee, Soon Woo Kwon
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Patent number: 11258081Abstract: A fuel cell hydrogen supply fault diagnosis system is provided. The system includes multiple fuel tanks that store hydrogen therein to supply the hydrogen and a fuel tank valve disposed at each of the fuel tanks and configured to be opened or closed to supply or shut off the hydrogen of the fuel tanks. A pressure sensor measures pressure in a fuel supply line that extends from each of the multiple fuel tanks to be integrally connected to a fuel cell stack. A supply amount estimator then estimates a supply amount of hydrogen supplied to the fuel cell stack and a consumption amount estimator estimates a consumption amount of hydrogen consumed in a reaction in the fuel cell stack or discharged therefrom. A fault detector then detects a hydrogen supply state.Type: GrantFiled: March 26, 2019Date of Patent: February 22, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Boung Ho Min, Dong Hun Lee, Soon Woo Kwon
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Publication number: 20210126270Abstract: Disclosed is a system for determining a hydrogen supply failure of a fuel cell, the system including: a fuel cell, a plurality of hydrogen tanks having hydrogen, a hydrogen supply line connected to the hydrogen tanks and supplying hydrogen from the hydrogen tanks to the fuel cell, a plurality of tank valves mounted on the hydrogen tanks, respectively, and discharging hydrogen in the hydrogen tanks to the hydrogen supply line when opening, a pressure sensor sensing pressure in the hydrogen supply line, and a determiner determining poor opening of the hydrogen tanks on the basis of pressure information sensed by the pressure sensor.Type: ApplicationFiled: March 24, 2020Publication date: April 29, 2021Inventors: Boung Ho Min, Dong Hun Lee, Soon Woo Kwon
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Patent number: 10964964Abstract: A method and a system for controlling hydrogen supply for a fuel cell are provided. The method includes calculating a target hydrogen supply pressure, which is a target pressure value of hydrogen supplied to a fuel cell stack based on a required output. A fuel supply valve (FSV) duty is then adjusted based on the calculated target hydrogen supply pressure and modes are determined based on the FSV duty or actual hydrogen supply pressure measurements of a sensor. A hydrogen supply pressure measurement is calculated according to each of the determined modes and the FSV duty is corrected based on the calculated target hydrogen supply pressure and the hydrogen supply pressure measurement.Type: GrantFiled: December 12, 2017Date of Patent: March 30, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Boung Ho Min, Kyung Won Suh, Kyu Il Lee
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Patent number: 10930956Abstract: A low flow control method for a fuel cell includes: determining whether or not the fuel cell enters a low flow control mode, dividing a low flow control operation into a plurality of low flow control stages upon determining that the fuel cell enters the low flow control mode, and controlling a power generation quantity of the fuel cell according to the low flow control stages.Type: GrantFiled: December 6, 2017Date of Patent: February 23, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Kyu Il Lee, Seong Cheol Jeong, Boung Ho Min
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Patent number: 10665874Abstract: A combined cooling system for a fuel cell vehicle and a control method thereof is capable of improving cooling performance and fuel efficiency by using interlocking control in various situations and by additionally adding a bypass loop and a control valve to a main line connecting a fuel cell, an electric component, a radiator, and a pump.Type: GrantFiled: November 8, 2017Date of Patent: May 26, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Boung Ho Min, Dong Hun Lee, Soon Il Jeon
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Publication number: 20200119378Abstract: A fuel cell hydrogen supply fault diagnosis system is provided. The system includes multiple fuel tanks that store hydrogen therein to supply the hydrogen and a fuel tank valve disposed at each of the fuel tanks and configured to be opened or closed to supply or shut off the hydrogen of the fuel tanks. A pressure sensor measures pressure in a fuel supply line that extends from each of the multiple fuel tanks to be integrally connected to a fuel cell stack A supply amount estimator then estimates a supply amount of hydrogen supplied to the fuel cell stack and a consumption amount estimator estimates a consumption amount of hydrogen consumed in a reaction in the fuel cell stack or discharged therefrom. A fault detector then detects a hydrogen supply state.Type: ApplicationFiled: March 26, 2019Publication date: April 16, 2020Inventors: Boung Ho Min, Dong Hun Lee, Soon Woo Kwon
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Patent number: 10272797Abstract: A system and method for controlling charging of a low-voltage battery are provided. The method includes determining a state of charge of the low-voltage battery of a vehicle based on a voltage of the low-voltage battery and determining a state of charge of the low-voltage battery based on a magnitude of consumed power of a low-voltage direct current (DC) converter (LDC) providing charged power to the low-voltage battery during a period in which vehicle start-up is performed. A charged voltage of the low-voltage battery is then set based on a determination result of the state of charge of the low-voltage battery.Type: GrantFiled: April 25, 2016Date of Patent: April 30, 2019Assignee: Hyundai Motor CompanyInventors: Kyu Il Lee, Boung Ho Min, Kyung Won Suh
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Publication number: 20190115607Abstract: A low flow control method for a fuel cell includes: determining whether or not the fuel cell enters a low flow control mode, dividing a low flow control operation into a plurality of low flow control stages upon determining that the fuel cell enters the low flow control mode, and controlling a power generation quantity of the fuel cell according to the low flow control stages.Type: ApplicationFiled: December 6, 2017Publication date: April 18, 2019Inventors: Kyu Il Lee, Seong Cheol Jeong, Boung Ho Min
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Publication number: 20190074529Abstract: A method and a system for controlling hydrogen supply for a fuel cell are provided. The method includes calculating a target hydrogen supply pressure, which is a target pressure value of hydrogen supplied to a fuel cell stack based on a required output. A fuel supply valve (FSV) duty is then adjusted based on the calculated target hydrogen supply pressure and modes are determined based on the FSV duty or actual hydrogen supply pressure measurements of a sensor. A hydrogen supply pressure measurement is calculated according to each of the determined modes and the FSV duty is corrected based on the calculated target hydrogen supply pressure and the hydrogen supply pressure measurement.Type: ApplicationFiled: December 12, 2017Publication date: March 7, 2019Inventors: Boung Ho Min, Kyung Won Suh, Kyu II Lee
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Publication number: 20180316026Abstract: A combined cooling system for a fuel cell vehicle and a control method thereof is capable of improving cooling performance and fuel efficiency by using interlocking control in various situations and by additionally adding a bypass loop and a control valve to a main line connecting a fuel cell, an electric component, a radiator, and a pump.Type: ApplicationFiled: November 8, 2017Publication date: November 1, 2018Inventors: Boung Ho MIN, Dong Hun LEE, Soon Il JEON
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Patent number: 9969298Abstract: A low voltage battery charger is provided that includes a fuel cell stack that generates electrical energy by a reaction of hydrogen and oxygen and an air blower that supplies air to the fuel cell stack. A high voltage DC converter converts an output voltage generated at the fuel cell stack to a high voltage. A high voltage battery is charged with the output voltage converted by the high voltage DC converter. A low voltage DC converter converts the output voltage generated at the fuel cell stack to a low voltage and a low voltage battery is charged with the output voltage converted by the low voltage DC converter. A controller then variably adjusts a charge voltage of the low voltage battery based on an air amount supplied to the fuel cell stack through the air blower.Type: GrantFiled: August 11, 2015Date of Patent: May 15, 2018Assignee: Hyundai Motor CompanyInventors: Boung Ho Min, Kyuil Lee, Sung Gone Yoon
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Patent number: 9929579Abstract: A method and an apparatus for controlling charging of a low voltage battery are provided. The method includes determining a consumption pattern of an auxiliary machinery based on a consumed power of the auxiliary machinery and setting a base charged voltage based on the consumption pattern of the auxiliary machinery. Further, a charged voltage is set for the low voltage battery based on the base charged voltage, a driving mode of a vehicle, and a state of charge of a high voltage battery.Type: GrantFiled: May 12, 2015Date of Patent: March 27, 2018Assignee: Hyundai Motor CompanyInventors: Kyu Il Lee, Ji Tae Kim, Boung Ho Min
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Patent number: 9871401Abstract: A method for controlling low-voltage battery charging may include determining a state-of-charge (SOC) of a low-voltage battery based on a voltage of the low-voltage battery. A base charging voltage is set according to the SOC of the low-voltage battery. A charging voltage of the low-voltage battery is set based on the base charging voltage, a vehicle operation mode, and a SOC of a high-voltage battery.Type: GrantFiled: March 3, 2015Date of Patent: January 16, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Kyu Il Lee, Boung Ho Min, Sung Gone Yoon
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Publication number: 20170166080Abstract: A system and method for controlling charging of a low-voltage battery are provided. The method includes determining a state of charge of the low-voltage battery of a vehicle based on a voltage of the low-voltage battery and determining a state of charge of the low-voltage battery based on a magnitude of consumed power of a low-voltage direct current (DC) converter (LDC) providing charged power to the low-voltage battery during a period in which vehicle start-up is performed. A charged voltage of the low-voltage battery is then set based on a determination result of the state of charge of the low-voltage battery.Type: ApplicationFiled: April 25, 2016Publication date: June 15, 2017Inventors: Kyu Il Lee, Boung Ho Min, Kyung Won Suh
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Publication number: 20160229310Abstract: A low voltage battery charger is provided that includes a fuel cell stack that generates electrical energy by a reaction of hydrogen and oxygen and an air blower that supplies air to the fuel cell stack. A high voltage DC converter converts an output voltage generated at the fuel cell stack to a high voltage. A high voltage battery is charged with the output voltage converted by the high voltage DC converter. A low voltage DC converter converts the output voltage generated at the fuel cell stack to a low voltage and a low voltage battery is charged with the output voltage converted by the low voltage DC converter. A controller then variably adjusts a charge voltage of the low voltage battery based on an air amount supplied to the fuel cell stack through the air blower.Type: ApplicationFiled: August 11, 2015Publication date: August 11, 2016Inventors: Boung Ho Min, Kyuil Lee, Sung Gone Yoon
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Publication number: 20160149429Abstract: A method and an apparatus for controlling charging of a low voltage battery are provided. The method includes determining a consumption pattern of an auxiliary machinery based on a consumed power of the auxiliary machinery and setting a base charged voltage based on the consumption pattern of the auxiliary machinery. Further, a charged voltage is set for the low voltage battery based on the base charged voltage, a driving mode of a vehicle, and a state of charge of a high voltage battery.Type: ApplicationFiled: May 12, 2015Publication date: May 26, 2016Inventors: Kyu Il Lee, Ji Tae Kim, Boung Ho Min
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Patent number: 9317050Abstract: A method and apparatus for controlling a converter of a fuel cell vehicle that uses a power control value generated based on an inverter DC terminal voltage as a reference value, and generates a current reference signal based on the reference value is provided. More specifically, the method and apparatus output a final reference signal that generates a pulse width modulation (PWM) signal by compensating for the current reference signal based on output terminal current of the converter. A peak value is then increased by amplifying a triangular wave signal, and the amplified triangular wave signal and the compensated final reference signal according to the current reference signal change rate are compared. A PWM signal having a predetermined duty ratio is then generated to control the converter.Type: GrantFiled: December 3, 2013Date of Patent: April 19, 2016Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ji Tae Kim, Boung Ho Min, Jae-Moon Lee, Ho Sung Kang
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Publication number: 20160105052Abstract: A method for controlling low-voltage battery charging may include determining a state-of-charge (SOC) of a low-voltage battery based on a voltage of the low-voltage battery. A base charging voltage is set according to the SOC of the low-voltage battery. A charging voltage of the low-voltage battery is set based on the base charging voltage, a vehicle operation mode, and a SOC of a high-voltage battery.Type: ApplicationFiled: March 3, 2015Publication date: April 14, 2016Inventors: Kyu Il LEE, Boung Ho MIN, Sung Gone YOON