Patents by Inventor Tae Hwan Chung
Tae Hwan Chung 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: 20240152851Abstract: Provided is a device for performing simulation for work schedule of a factory includes an experiment design module for generating experiment design data by selecting one or more factors from a plurality of factors included in reference information as target factors, and setting levels of the selected target factors, the reference information being an input value to a model that serves as a target of a what-if simulation experiment, and an experiment execution module for outputting an experiment execution result by executing the what-if simulation experiment for the model in parallel by using an executor including a plurality of execution engines based on the experiment design data.Type: ApplicationFiled: August 23, 2023Publication date: May 9, 2024Applicant: VMS Solutions Co. Ltd.Inventors: Won Jun LEE, Tae Jun CHOI, Goo Hwan CHUNG, Geon A KIM, Jin-Yeong JEONG
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Publication number: 20240153175Abstract: A manufacturing system state image preprocessing device in accordance with one embodiment of the present disclosure includes: a basic image generator configured to generate a basic image that visually represents a manufacturing system state based on manufacturing system state data, wherein the basic image includes a Gantt chart; and a conditioned image generator configured to generate one or more conditioned images in which one or more sets of conditions have been applied to the basic image, wherein an output image including at least one of the basic image and the one or more conditioned images is provided as input to an artificial neural network module.Type: ApplicationFiled: November 6, 2023Publication date: May 9, 2024Applicant: VMS Solutions Co. Ltd.Inventors: Won Jun LEE, Tae Jun CHOI, Goo Hwan CHUNG, Geon A KIM, Jin-Yeong JEONG
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Publication number: 20240121948Abstract: A semiconductor device and a method of fabricating the same are provided. According to the present invention, a semiconductor device comprises an active region formed in a substrate, and including flat surfaces and hole-shaped recess portions; upper-level plugs disposed over the flat surfaces; a spacer disposed between the upper-level plugs and providing a trench exposing the hole-shaped recess portions; a lower-level plug filling the hole-shaped recess portions; and a buried conductive line disposed over the lower-level plug and partially filling the trench.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Inventors: Jae Man YOON, Jin Hwan JEON, Tae Kyun KIM, Jung Woo PARK, Su Ock CHUNG, Jae Won HA
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Patent number: 11581520Abstract: The present invention relates an electrode notching apparatus. The electrode notching apparatus comprises: a notching unit shaping an electrode into a predetermined pattern; a heating unit drying the electrode processed by the notching unit; and a collecting unit collecting the electrode dried by the heating unit, wherein the heating unit comprises: a heating body having a drying space through which the electrode supplied by the notching unit passes; and heating members directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.Type: GrantFiled: December 19, 2018Date of Patent: February 14, 2023Inventors: Sang Jin Woo, Tae Hwan Chung, Sin Young Park, Tae Won Kang, Ji Soo Park, Dong Hyeuk Park, Chang Bum Ahn, Jae Hong Kim
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Patent number: 11014469Abstract: A power relay assembly (PRA) and a method of controlling the same are provided. The power relay assembly includes a first main relay for interconnecting negative voltages of a battery and an inverter, a second main relay for interconnecting positive voltages of the battery and the inverter, and a pre-charge relay connected in parallel to the second main relay. A controller executes the open or short sequence of the first main relay, the second main relay, and the pre-charge relay based on the opening and closing operation between the battery and the inverter or the charging and discharging operation of the battery. The opening and closing operation is divided into an opening operation and a closing operation between the battery and the inverter, and the charging and discharging operation is divided into a charging operation and a discharging operation of the battery.Type: GrantFiled: November 20, 2018Date of Patent: May 25, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Mi Ok Kim, Do Sung Hwang, Bo Seon Lee, Beom Gyu Kim, Jong Hu Yoon, Hyun Soo Park, Tae Hwan Chung
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Publication number: 20200161629Abstract: The present invention relates an electrode notching apparatus. The electrode notching apparatus comprises: a notching unit shaping an electrode into a predetermined pattern; a heating unit drying the electrode processed by the notching unit; and a collecting unit collecting the electrode dried by the heating unit, wherein the heating unit comprises: a heating body having a drying space through which the electrode supplied by the notching unit passes; and heating members directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.Type: ApplicationFiled: December 19, 2018Publication date: May 21, 2020Applicant: LG Chem, Ltd.Inventors: Sang Jin Woo, Tae Hwan Chung, Sin Young Park, Tae Won Kang, Ji Soo Park, Dong Hyeuk Park, Chang Bum Ahn, Jae Hong Kim
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Patent number: 10513200Abstract: A vehicle battery system and a method of controlling charge of a battery in the system are provided. The system includes a first battery module that has a plurality of battery cells connected to each other in series and a second battery module that has a plurality of battery cells connected to each other in series. The second battery module is connected to the first battery module in series. A controller then monitors a state of charge of each of the first and second battery modules, such that when the state of charge of one of the first and second battery modules is less than a predetermined level, the controller performs active cell balancing between the battery cells of the first battery module and the battery cells of the second battery module.Type: GrantFiled: September 1, 2017Date of Patent: December 24, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Mi Ok Kim, Beom Gyu Kim, Jong Hu Yoon, Tae Hwan Chung
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Publication number: 20190173292Abstract: A power relay assembly (PRA) and a method of controlling the same are provided. The power relay assembly includes a first main relay for interconnecting negative voltages of a battery and an inverter, a second main relay for interconnecting positive voltages of the battery and the inverter, and a pre-charge relay connected in parallel to the second main relay. A controller executes the open or short sequence of the first main relay, the second main relay, and the pre-charge relay based on the opening and closing operation between the battery and the inverter or the charging and discharging operation of the battery. The opening and closing operation is divided into an opening operation and a closing operation between the battery and the inverter, and the charging and discharging operation is divided into a charging operation and a discharging operation of the battery.Type: ApplicationFiled: November 20, 2018Publication date: June 6, 2019Inventors: Mi Ok Kim, Do Sung Hwang, Bo Seon Lee, Beom Gyu Kim, Jong Hu Yoon, Hyun Soo Park, Tae Hwan Chung
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Patent number: 10232726Abstract: A control pilot (CP) signal detection method for a vehicle charger includes: counting CP signals based on signal levels of the CP signals during a set period of time, when an input of the CP signals is detected while an ignition of a vehicle is turned off; determining whether a count of high-level CP signals among the CP signals is within a reference range, when the set period of time elapses; and outputting state information of the CP signals based on the determination of whether the count of high-level CP signals is within the reference range.Type: GrantFiled: June 17, 2015Date of Patent: March 19, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jae Won Lee, Jung Hwan Na, Tae Hwan Chung
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Patent number: 10160326Abstract: An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.Type: GrantFiled: December 1, 2016Date of Patent: December 25, 2018Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Tae Hwan Chung, Jong Hu Yoon, Beom Gyu Kim, Mi Ok Kim
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Publication number: 20180281616Abstract: A vehicle battery system and a method of controlling charge of a battery in the system are provided. The system includes a first battery module that has a plurality of battery cells connected to each other in series and a second battery module that has a plurality of battery cells connected to each other in series. The second battery module is connected to the first battery module in series. A controller then monitors a state of charge of each of the first and second battery modules, such that when the state of charge of one of the first and second battery modules is less than a predetermined level, the controller performs active cell balancing between the battery cells of the first battery module and the battery cells of the second battery module.Type: ApplicationFiled: September 1, 2017Publication date: October 4, 2018Inventors: Mi Ok Kim, Beom Gyu Kim, Jong Hu Yoon, Tae Hwan Chung
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Publication number: 20180009317Abstract: An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.Type: ApplicationFiled: December 1, 2016Publication date: January 11, 2018Inventors: Tae Hwan CHUNG, Jong Hu YOON, Beom Gyu KIM, Mi Ok KIM
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Patent number: 9544990Abstract: An analog control system configured to operate a converter in an electric vehicle battery charging system is provided. The analog control system includes a pulse width modulation (PWM) output unit that is configured to output a PWM signal to the converter and an integrated control unit that is configured to sense an input voltage and an output voltage of the converter. The analog control system may be implemented on a printed circuit board having a first ground voltage stage connected to the PWM output unit, a second ground voltage stage separated from the first ground voltage stage by a first predetermined interval and connected to the integrated control unit. A filtering unit is disposed between the first ground voltage stage and the second ground voltage stage to pass an output signal of a predetermined band from the PWM unit to the integrated control unit.Type: GrantFiled: November 25, 2014Date of Patent: January 10, 2017Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jung Hwan Na, Sang Hoon Kwak, Tae Hwan Chung, Gun Soo Kang
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Patent number: 9531286Abstract: A method for control of an electric vehicle converter is provided. The converter is adapted to drop voltage and a counting unit is adapted to count a signal generated by the converter. The method includes inputting a signal that is generated by the converter to the counting unit during operation of the converter and counting the signal. Additionally, whether a counting result of the counting unit corresponds to a predetermined interval is determined and the converter is determined to be out-of-order when the counting result does not correspond to the predetermined interval.Type: GrantFiled: December 7, 2011Date of Patent: December 27, 2016Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Kyu Kim, Jaewon Lee, Tae Hwan Chung, Ki Jong Lee, Jong Kyong Lim, Sang Hoon Kwak
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Patent number: 9400293Abstract: A voltage sensing circuit of a converter senses input and output voltages of a converter with only one sensing circuit. The voltage sensing circuit is capable of reducing the number of the components for a controller and the volume thereof to save cost, and detecting whether the discontinuous mode (DCM) is entered or not, thereby to apply a separate control algorithm thereto when the DCM is entered.Type: GrantFiled: October 14, 2013Date of Patent: July 26, 2016Assignee: HYUNDAI MOTOR COMPANYInventors: Jung Hwan Na, Tae Hwan Chung, Sang Hoon Kwak, Hyun Wook Seong
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Publication number: 20160105164Abstract: An apparatus for generating a switching signal for an analog controller includes: a voltage setting unit configured to set voltages Vref_high and Vref_low of a triangular wave; a period adjuster configured to adjust a period of the triangular wave; a triangular wave generator configured to generate the triangular wave at the period based on the voltages set by the voltage setting unit; and an AC component passing unit configured to pass an AC component of the triangular wave through a low voltage DC-DC converter (LDC) analog controller.Type: ApplicationFiled: March 21, 2015Publication date: April 14, 2016Inventors: Jung Hwan Na, Jee Hye Jeong, Jae Won Lee, Tae Hwan Chung
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Publication number: 20160096442Abstract: A control pilot (CP) signal detection method for a vehicle charger includes: counting CP signals based on signal levels of the CP signals during a set period of time, when an input of the CP signals is detected while an ignition of a vehicle is turned off; determining whether a count of high-level CP signals among the CP signals is within a reference range, when the set period of time elapses; and outputting state information of the CP signals based on the determination of whether the count of high-level CP signals is within the reference range.Type: ApplicationFiled: June 17, 2015Publication date: April 7, 2016Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: Jae Won Lee, Jung Hwan Na, Tae Hwan Chung
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Publication number: 20160023561Abstract: An analog control system configured to operate a converter in an electric vehicle battery charging system is provided. The analog control system includes a pulse width modulation (PWM) output unit that is configured to output a PWM signal to the converter and an integrated control unit that is configured to sense an input voltage and an output voltage of the converter. The analog control system may be implemented on a printed circuit board having a first ground voltage stage connected to the PWM output unit, a second ground voltage stage separated from the first ground voltage stage by a first predetermined interval and connected to the integrated control unit. A filtering unit is disposed between the first ground voltage stage and the second ground voltage stage to pass an output signal of a predetermined band from the PWM unit to the integrated control unit.Type: ApplicationFiled: November 25, 2014Publication date: January 28, 2016Inventors: Jung Hwan Na, Sang Hoon Kwak, Tae Hwan Chung, Gun Soo Kang
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Publication number: 20150349623Abstract: An inverter gate board divided into a low-voltage region and a high-voltage region includes a plurality of drive circuits surface-mounted between the low-voltage region and the high-voltage region, each having a single main power source (SMPS) controller, and a plurality of transformers surface-mounted between the low-voltage region and the high-voltage region so as to supply a transformed voltage to each of the plurality of drive circuits, respectively.Type: ApplicationFiled: October 29, 2014Publication date: December 3, 2015Inventors: Ki Jong Lee, Tae Hwan Chung, Kang Ho Jeong
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Patent number: 9116019Abstract: Disclosed is a technique for compensating for an abnormal output of a resolver. More specifically, a central processing unit (CPU) sets a current motor position angle before compensation ?n,ORG as a current motor position angle ?n and obtains a motor position change ??n[rad] between a current sampling [n] and a previous sampling [n?1] and a motor position change ??n-1[rad] between the previous sampling [n?1] and a more previous sampling [n?2]. Subsequently, a variable A is calculated based on the above angles. The CPU determines whether to perform the compensation by comparing the calculated variable A and a calibration variable K and calculates a current motor position angle for compensation ?n[rad]. Finally, the CPU compensates for the absence of motor rotor position information with the calculated current motor position angle for compensation ?n[rad].Type: GrantFiled: May 9, 2012Date of Patent: August 25, 2015Assignee: Hyundai Motor CompanyInventors: Bum Sik Kim, Tae Hwan Chung, Kang Ho Jeong