Patents by Inventor Min-seong Choi
Min-seong Choi 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: 20240131962Abstract: The present disclosure relates to a vehicle battery charging system and a battery charging method thereof. The present disclosure provides a battery charging method of a battery charging system including an on-board charger to convert an AC voltage from an outside into a DC voltage, a first battery, and a second battery having a lower rated voltage than that of the first battery, the battery charging method including: operating a first charging mode of turning on a first switch between the on-board charger and the first battery and turning off a second switch between the on-board charger and the second battery when a voltage of the second battery exceeds a first threshold value; and operating a second charging mode of turning off the first switch and turning on the second switch when the voltage of the second battery does not exceed the first threshold value.Type: ApplicationFiled: March 3, 2023Publication date: April 25, 2024Inventor: Min Seong Choi
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Publication number: 20240128510Abstract: The present invention relates to a novel electrolyte and a secondary battery including the same. The present invention has an effect of providing a secondary battery having improved charging efficiency and output due to reduced charging resistance and having excellent long-term lifespan and high-temperature capacity retention rate.Type: ApplicationFiled: December 24, 2021Publication date: April 18, 2024Inventors: Ji Young CHOI, Min Goo KIM, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Min Jung JANG
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Publication number: 20240105991Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.Type: ApplicationFiled: January 21, 2022Publication date: March 28, 2024Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
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Publication number: 20240097190Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.Type: ApplicationFiled: January 21, 2022Publication date: March 21, 2024Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
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Publication number: 20240097189Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.Type: ApplicationFiled: January 21, 2022Publication date: March 21, 2024Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
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Publication number: 20240097188Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.Type: ApplicationFiled: January 21, 2022Publication date: March 21, 2024Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
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Publication number: 20240078710Abstract: Disclosed herein are a method, an apparatus and a storage medium for encoding/decoding using a transform-based feature map. An optimal basis vector is extracted from one or more feature maps, and a transform coefficient is acquired through a transform using the basis vector. The basis vector and the transform coefficient may be transmitted through a bitstream. In an embodiment, one or more feature maps are reconstructed using the basis vector and the transform coefficient, which are decoded from the bitstream.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Applicant: Electronics and Telecommunications Research InstituteInventors: Youn-Hee KIM, Jooyoung LEE, Se-Yoon JEONG, Jin-Soo CHOI, Dong-Gyu SIM, Na-Seong KWON, Seung-Jin PARK, Min-Hun LEE, Han-Sol CHOI
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Publication number: 20240017629Abstract: An embodiment is battery charging system including an external voltage conversion device including an input unit configured to receive a system AC voltage, an output unit configured to output a charging DC voltage, and a power factor correction circuit including a first switching circuit connected to the input unit, a second switching circuit connected to the output unit, and a transformer connected between the first switching circuit and the second switching circuit, and an electrified vehicle including a charging port configured to receive the charging DC voltage, a battery, a motor having a plurality of windings, an inverter connected to each of one-side ends of the plurality of windings, and a relay connected between the charging port and a neutral terminal for the plurality of windings, the electrified vehicle controlling the relay upon recharging of the battery.Type: ApplicationFiled: November 11, 2022Publication date: January 18, 2024Inventors: Si Hun Yang, Jin Young Yang, In Yong Yeo, Jong Eun Byun, Sang Jin Kim, Dae Woo Lee, Min Seong Choi
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Publication number: 20230147151Abstract: An embodiment charging apparatus includes a main battery, a charger configured to generate an initial charging power source by receiving a direct current (DC) power source from an auxiliary battery installed separately from the main battery or by receiving an alternating current (AC) power source to execute an initial charging operation, and a first switch configured to block or conduct an electrical connection between the auxiliary battery and the charger to thereby execute the initial charging operation depending upon whether the AC power source is supplied. The initial charging operation is terminated when the initial charging power source reaches a preset reference value calculated by multiplying an output power source of the main battery by a preset setting value.Type: ApplicationFiled: July 19, 2022Publication date: May 11, 2023Inventor: Min-Seong Choi
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Publication number: 20230030897Abstract: Disclosed are a converter control device and a control method including a first switching element connected to each end of at least one first battery, a second switching element connected to the other end of the first battery and connected in series with the first switching element, a third switching element connected to one end of a second battery, a fourth switching element connected to the other end of the second battery and connected in series with the third switching element, an inductor connected to a first node between the first switching element and the second switching element and a second node between the third switching element and the fourth switching element, and a duty controller to receive each first voltage that is a voltage value of each end of the first battery and a second voltage that is a voltage value of one end of the second battery, and to output duty of the respective first switching element based on the first voltage and the second voltage.Type: ApplicationFiled: March 16, 2022Publication date: February 2, 2023Inventors: Min Seong Choi, Jin Young Yang, In Yong Yeo
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Publication number: 20230026817Abstract: The present disclosure relates to an apparatus and a method for controlling an LLC resonance converter. The apparatus includes a converter connected to an input terminal, including a plurality of switching elements constituting a bridge circuit, and enabling a topology change in the form of a full bridge and a half bridge; and a controller detecting a charge measurement value of a battery being charged with a power transferred by the converter, and changing a topology of the converter based on the charge measurement value. Since battery charging is performed by changing the topology of the converter in accordance with the charge measurement value of the battery, the LLC resonance converter can be controlled at an optimized frequency, the efficiency is increased, and cost savings can be achieved.Type: ApplicationFiled: March 16, 2022Publication date: January 26, 2023Inventors: Min Seong Choi, In Yong Yeo, Dae Woo Lee, Jin Young Yang
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Publication number: 20220214427Abstract: Disclosed is a method and apparatus for removing LiDAR point cloud noise. This method removes in real time only the LiDAR point cloud noise acquired in snowfall and rain environments, leaving behind the environmental characteristics of the LiDAR point cloud. Accordingly, it is possible to maximize the utilization of the LiDAR.Type: ApplicationFiled: September 28, 2021Publication date: July 7, 2022Inventors: Kyung Soo KIM, Ji-II PARK, Min Seong CHOI, Hyun Yong JEON, Ji Hyuk PARK
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Patent number: 11305655Abstract: An electric power conversion system includes: an AC-DC conversion circuit converting AC charging power into DC power; a motor including a plurality of coils, one end of each being connected to a neutral point; a first switching device selectively allowing or blocking supply of output power from the AC-DC conversion circuit to the neutral point; an inverter including a plurality of motor connection terminals connected to the other ends of the coils of the motor, respectively, DC connection terminals including a positive terminal and a negative terminal, and a plurality of switching elements forming electrical connections between the DC connection terminals and the plurality of motor connection terminals; a battery connected to the DC connection terminals of the inverter; and a controller controlling operations of the AC-DC conversion circuit, the first switching device, and the inverter in accordance with whether or not the battery is charged.Type: GrantFiled: March 11, 2020Date of Patent: April 19, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Dae Woo Lee, Min Seong Choi, Si Hun Yang, Jae Eun Cha, Jin Young Yang, In Yong Yeo
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Patent number: 11247576Abstract: Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each leg including two switching devices connected in series, a plurality of inductors, each inductor having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the plurality of legs, and a controller configured to control on/off states of the switching devices of the plurality of legs in a pulse width modulation manner such that each of the inductors of the plurality of inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each inductor of the plurality of inductors.Type: GrantFiled: July 8, 2020Date of Patent: February 15, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: In Yong Yeo, Woo Young Lee, Gyu Yeong Choe, Jin Young Yang, Ji Han Lee, Si Hun Yang, Young Jin Kim, Min Seong Choi, Jong Pil Kim
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Patent number: 11230201Abstract: A system of charging a battery of a vehicle is provided. The system includes a charger having a direct current (DC) capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts a magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.Type: GrantFiled: November 11, 2019Date of Patent: January 25, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Dae Woo Lee, Min Seong Choi, In Yong Yeo, Tae Jong Ha, Jin Myeong Yang, Woo Young Lee
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Publication number: 20210178919Abstract: Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each including two switching devices connected in series, a plurality of inductors each having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the legs, and a controller configured to control on/off states of the switching devices in a pulse width modulation manner such that each of the inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each of the inductors.Type: ApplicationFiled: July 8, 2020Publication date: June 17, 2021Inventors: In Yong Yeo, Woo Young Lee, Gyu Yeong Choe, Jin Young Yang, Ji Han Lee, Si Hun Yang, Young Jin Kim, Min Seong Choi, Jong Pil Kim
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Patent number: 10965161Abstract: A wireless power receiving apparatus includes a receiving resonator configured to wirelessly receive energy; a resonant converter configured to transfer, to an output end of the wireless power receiving apparatus, energy of an energy storage device connected among a plurality of energy storage devices; and a controller configured to accumulate, alternatingly in the energy storage devices, the energy received, and select the energy storage device to be connected to the resonant converter from the energy storage devices.Type: GrantFiled: July 24, 2018Date of Patent: March 30, 2021Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Seungchul Jung, Gyu Hyeong Cho, Sang Joon Kim, JongPal Kim, Se Un Shin, Min Seong Choi, Seok Tae Koh, Yu Jin Yang
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Publication number: 20210078422Abstract: A system of charging a battery of a vehicle is provide. The system includes a charger having a DC capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts the magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.Type: ApplicationFiled: November 11, 2019Publication date: March 18, 2021Inventors: Dae Woo Lee, Min Seong Choi, In Yong Yeo, Tae Jong Ha, Jin Myeong Yang, Woo Young Lee
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Publication number: 20210039506Abstract: An electric power conversion system includes: an AC-DC conversion circuit converting AC charging power into DC power; a motor including a plurality of coils, one end of each being connected to a neutral point; a first switching device selectively allowing or blocking supply of output power from the AC-DC conversion circuit to the neutral point; an inverter including a plurality of motor connection terminals connected to the other ends of the coils of the motor, respectively, DC connection terminals including a positive terminal and a negative terminal, and a plurality of switching elements forming electrical connections between the DC connection terminals and the plurality of motor connection terminals; a battery connected to the DC connection terminals of the inverter; and a controller controlling operations of the AC-DC conversion circuit, the first switching device, and the inverter in accordance with whether or not the battery is charged.Type: ApplicationFiled: March 11, 2020Publication date: February 11, 2021Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Dae Woo LEE, Min Seong CHOI, Si Hun YANG, Jae Eun CHA, Jin Young YANG, In Yong YEO
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Patent number: 10840820Abstract: An integrated converter is provided. The integrated converter includes a high-voltage charger having a power factor correction (PFC) device configured to compensate a low-frequency ripple and convert an alternating current (AC) voltage of a commercial power source into a direct current (DC) voltage. A first switching module is configured to convert the DC voltage output from the PFC device into an AC voltage and charge a high-voltage battery using the commercial power source and a low-voltage charger that is connected between the PFC device and the first switching module and the high-voltage charger configured to charge a low-voltage battery using the commercial power source or the high-voltage battery.Type: GrantFiled: July 22, 2019Date of Patent: November 17, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Young Yang, Gyu Yeong Choe, Min Seong Choi, Tae Jong Ha, Young Jin Kim, Jae Eun Cha, Dae Woo Lee, In Yong Yeo