Patents by Inventor In Yong Yeo

In Yong Yeo 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).

  • Patent number: 12280691
    Abstract: The present disclosure relates to a charging system and a charging method for charging a main battery of a vehicle. The main battery can be charged with a voltage of a swappable battery using a DC-DC converter of an on-board computer (OBC) without installing additional converters for a plurality of swappable batteries through connection of the plurality of swappable batteries to input terminals of a plurality of DC-DC converters of the OBC charging the main battery, so that a driving distance of the vehicle is increased, and the efficiency of a motor and the inverters is increased.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: April 22, 2025
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: In Yong Yeo, Youn Sik Lee
  • Patent number: 12257925
    Abstract: A power conversion system includes: a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to auxiliary battery, the power converter comprising a bypass circuit and a buck converter. The buck converter includes a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch.
    Type: Grant
    Filed: November 11, 2022
    Date of Patent: March 25, 2025
    Assignees: Hyundai Motor Company, Foundation for Research and Business, Seoul National University of Science and Technology, Kia Corporation
    Inventors: In Yong Yeo, Youn Sik Lee, Se Wan Choi
  • Patent number: 12101031
    Abstract: 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: Grant
    Filed: March 16, 2022
    Date of Patent: September 24, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Min Seong Choi, In Yong Yeo, Dae Woo Lee, Jin Young Yang
  • Publication number: 20240258799
    Abstract: A power conversion apparatus capable of simultaneously discharging swap batteries even while reducing the number of power circuits includes a secondary converter configured to convert alternating current (AC) power into direct current (DC) power, a main battery connected to the secondary converter to receive the DC power, a replaceable swap battery block connected to the secondary converter configured for simultaneous discharge with the main battery, a switching circuit configured to turn on or off electrical connection between the replaceable swap battery block and the secondary converter, and a bypass circuit configured to turn on or off electrical connection between the swap battery block and the main battery.
    Type: Application
    Filed: July 12, 2023
    Publication date: August 1, 2024
    Applicants: Hyundai Motor Company, Kia Corporation, Foundation for Research and Business, Seoul National University of Science and Technology
    Inventors: In-Yong YEO, Youn-Sik LEE, Sang-Jin KIM, Se-Wan CHOI, Jae-Hoon KIM, Hui-Gyoung SONG
  • Publication number: 20240149733
    Abstract: A power system for an electrified vehicle comprising a first power source device, a first converter having a first end connected to the first power source device, a second power source device, a motor driving device comprising a motor and an inverter, a switch device configured to selectively connect a second end of the first converter to the second power source device or the motor driving device, and a controller configured to control the switch device such that the second end of the first converter is connected to the second power source device when the first power source device is charged with power of the second power source device and such that the second end of the first converter is connected to the motor driving device when the motor performs regenerative braking.
    Type: Application
    Filed: April 19, 2023
    Publication date: May 9, 2024
    Inventors: Min Seong Choi, In Yong Yeo, Jong Eun Byun, Sang Jin Kim, Jin Young Yang, Si Hun Yang
  • Publication number: 20240051431
    Abstract: A power conversion system includes: a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to auxiliary battery, the power converter comprising a bypass circuit and a buck converter. The buck converter includes a buck switch, and is configured to convert a voltage of the auxiliary battery into a voltage for recharging the main battery in accordance with an ON/OFF switching operation of the buck switch.
    Type: Application
    Filed: November 11, 2022
    Publication date: February 15, 2024
    Inventors: In Yong Yeo, Youn Sik Lee, Se Wan Choi
  • Publication number: 20240051411
    Abstract: In an embodiment, a power conversion system includes: an on-board charger; a main battery configured to be recharged with power and to supply the recharged power to a motor, thereby supplying rotation force to a wheel of a vehicle; an auxiliary battery configured to recharge the main battery or to assist a power supply function of the main battery; and a power converter connected to the auxiliary battery, the power converter comprising a bypass circuit and a buck switch. A part of the on-board charger and the power converter constitute a DC-DC converter, and the buck switch is configured to be repeatedly switched on and off when a voltage of the auxiliary battery is higher than a voltage of the main battery, and does not operate when the voltage of the auxiliary battery is not higher than the voltage of the main battery.
    Type: Application
    Filed: November 11, 2022
    Publication date: February 15, 2024
    Inventors: In Yong Yeo, Youn Sik Lee, Se Wan Choi
  • Publication number: 20240017629
    Abstract: 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: Application
    Filed: November 11, 2022
    Publication date: January 18, 2024
    Inventors: Si Hun Yang, Jin Young Yang, In Yong Yeo, Jong Eun Byun, Sang Jin Kim, Dae Woo Lee, Min Seong Choi
  • Publication number: 20230030897
    Abstract: 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: Application
    Filed: March 16, 2022
    Publication date: February 2, 2023
    Inventors: Min Seong Choi, Jin Young Yang, In Yong Yeo
  • Publication number: 20230024016
    Abstract: The present disclosure relates to a charging system and a charging method for charging a main battery of a vehicle. The main battery can be charged with a voltage of a swappable battery using a DC-DC converter of an on-board computer (OBC) without installing additional converters for a plurality of swappable batteries through connection of the plurality of swappable batteries to input terminals of a plurality of DC-DC converters of the OBC charging the main battery, so that a driving distance of the vehicle is increased, and the efficiency of a motor and the inverters is increased.
    Type: Application
    Filed: March 17, 2022
    Publication date: January 26, 2023
    Inventors: In Yong Yeo, Youn Sik Lee
  • Publication number: 20230026817
    Abstract: 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: Application
    Filed: March 16, 2022
    Publication date: January 26, 2023
    Inventors: Min Seong Choi, In Yong Yeo, Dae Woo Lee, Jin Young Yang
  • Patent number: 11335494
    Abstract: A planar transformer is disclosed. The planar transformer includes a first core, a second core, a third core, and a fourth core, which are sequentially disposed; a primary coil unit having multiple primary substrates through which the first to fourth cores penetrate and on which primary coil patterns are formed such that magnetic flux is generated in a first direction in the first and fourth cores and in a second direction in the second and third cores; and a secondary coil unit having multiple secondary substrates through which the first to fourth cores penetrate and on which secondary coil patterns are formed, the secondary coil patterns formed on a periphery of the first to fourth cores such that current induced by the magnetic flux flowing in the first to fourth cores flows therein, wherein the multiple primary and secondary substrates form a multi-layer structure.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: May 17, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: In Yong Yeo, Tae Jong Ha, Dae Woo Lee, Youn Sik Lee
  • Patent number: 11305655
    Abstract: 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: Grant
    Filed: March 11, 2020
    Date of Patent: April 19, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dae Woo Lee, Min Seong Choi, Si Hun Yang, Jae Eun Cha, Jin Young Yang, In Yong Yeo
  • Patent number: 11247576
    Abstract: 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: Grant
    Filed: July 8, 2020
    Date of Patent: February 15, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: 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
  • Patent number: 11230201
    Abstract: 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: Grant
    Filed: November 11, 2019
    Date of Patent: January 25, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dae Woo Lee, Min Seong Choi, In Yong Yeo, Tae Jong Ha, Jin Myeong Yang, Woo Young Lee
  • Patent number: 11207992
    Abstract: A power conversion system for vehicles is provided. The system includes a switching circuit having first input/output terminals, second input/output terminals and a plurality of switching elements connected between the first input/output terminals and the second input/output terminals. A first energy storage device is connected to the second input/output terminals and has a preset charging/discharging voltage. A first voltage conversion circuit converts power output from the first input/output terminals to output a voltage less than the voltage of the first energy storage device. A second energy storage device is charged/discharged with the output voltage of the first voltage conversion circuit. A controller controls open/short-circuit states of the switching elements based on whether the first energy storage device is being charged and whether the vehicle is traveling.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: December 28, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: In Yong Yeo, Jin Myeong Yang, Woo Young Lee, Youn Sik Lee, Dae Woo Lee, Jong Pil Kim
  • Publication number: 20210178919
    Abstract: 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: Application
    Filed: July 8, 2020
    Publication date: June 17, 2021
    Inventors: 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
  • Patent number: 10965205
    Abstract: A power conversion system for vehicles is provided. The system includes a first energy storage device and a charging device with a rectification circuit for rectifying AC power to generate a DC link voltage. A DC-DC converter converts the level of the DC link voltage to generate a charging voltage of the first energy storage device. A low voltage DC-DC converter selectively down-converts one of the voltage of the first energy storage device and the DC link voltage to output a low voltage having a predetermined level. The low voltage DC-DC converter selectively converts one of the voltage of the first energy storage device and the DC link voltage into the low voltage based on whether the first energy storage device is charged according to input of the AC power.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: March 30, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Tae Jong Ha, In Yong Yeo, Dae Woo Lee, Youn Sik Lee
  • Publication number: 20210078422
    Abstract: 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: Application
    Filed: November 11, 2019
    Publication date: March 18, 2021
    Inventors: Dae Woo Lee, Min Seong Choi, In Yong Yeo, Tae Jong Ha, Jin Myeong Yang, Woo Young Lee
  • Publication number: 20210039506
    Abstract: 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: Application
    Filed: March 11, 2020
    Publication date: February 11, 2021
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dae Woo LEE, Min Seong CHOI, Si Hun YANG, Jae Eun CHA, Jin Young YANG, In Yong YEO