Patents by Inventor Ho-Joong Lee
Ho-Joong Lee 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).
-
Publication number: 20240072536Abstract: A power supply device includes: a low-voltage direct current-direct current converter (LDC) to convert a voltage of a high-voltage battery to supply power; a first low-voltage battery to be charged by receiving power from the LDC and supply power to a general load; a bidirectional converter to convert a voltage supplied from the LDC and control a charge amount of a second low-voltage battery; the second low-voltage battery to be charged by receiving power from the bidirectional converter and supply power to a dual power source load; a first relay disposed between the LDC and the first low-voltage battery; a second relay disposed between the bidirectional converter and the second low-voltage battery; a second battery sensor to measure a voltage of the second low-voltage battery; and a control unit to control the bidirectional converter.Type: ApplicationFiled: January 19, 2023Publication date: February 29, 2024Applicants: Hyundai Motor Company, Kia CorporationInventor: Ho Joong LEE
-
Publication number: 20240072567Abstract: A power supply method and apparatus for dual power load includes a low voltage direct current-direct current converter (LDC) configured to convert a voltage of a high-voltage battery to supply power, a first low-voltage battery configured to be charged by receiving the power from the LDC and to supply power to a general load or a dual power load, a second low-voltage battery configured to be charged by receiving the power from the LDC and to supply power to the dual power load, a first relay disposed between the LDC and the first low-voltage battery, a second relay disposed between the LDC and the second low-voltage battery, a first battery sensor configured to measure a voltage of the first low-voltage battery, and a second battery sensor configured to measure a voltage of the second low-voltage battery.Type: ApplicationFiled: January 19, 2023Publication date: February 29, 2024Applicants: Hyundai Motor Company, Kia CorporationInventor: Ho Joong LEE
-
Publication number: 20240051516Abstract: An embodiment hybrid electric vehicle includes a battery, a bidirectional power conversion device connected to the battery, a battery control unit configured to output a charge power instruction when a state of charge (SOC) of the battery is a first reference value or less by determining the SOC of the battery in a battery power output mode in which power of the battery is output to the outside through the bidirectional power conversion device, an engine control unit configured to drive an engine when the SOC of the battery is the first reference value or less, and a motor control unit configured to, when the charge power instruction is received, drive a motor such that the motor generates electricity using power from the engine and the battery is charged based on the received charge power instruction.Type: ApplicationFiled: January 23, 2023Publication date: February 15, 2024Inventor: Ho Joong LEE
-
Patent number: 11658501Abstract: A system for controlling a low voltage DC converter for a vehicle includes the low voltage DC converter configured to step down a voltage of a first battery and output an output voltage; a blower configured to operate using the output voltage of the low voltage DC converter as a power supply voltage; and a low voltage DC converter controller configured to receive information on whether the blower operates and an output setting of the blower, and control a magnitude of the output voltage of the low voltage DC converter, based on the received information on whether the blower operates and an output setting of the blower.Type: GrantFiled: September 13, 2021Date of Patent: May 23, 2023Assignees: Hyundai Motor Company, Kia CorporationInventors: Ho Joong Lee, Dong Jun Shin
-
Publication number: 20230013714Abstract: A power conversion system for autonomous driving and a method for controlling the same, includes a first battery and a second battery; an LDC configured to convert the magnitude of a voltage, output the voltage, and charge the first battery with an output of the LDC; an autonomous driving load electrically connected to the LDC and the first battery and configured to be provided with a power voltage from the LDC or the first battery; and an autonomous driving controller electrically connected to the LDC, the first battery, and the second battery and configured to be provided with a power voltage from one of the LDC, the first battery, or the second battery, wherein the LDC is configured to determine the output of the LDC based on control parameters including the load amount of the autonomous driving load and the state of charging of the first battery and the state of charging of the second battery.Type: ApplicationFiled: May 9, 2022Publication date: January 19, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Ho Joong Lee, Joon Young Jeon
-
Publication number: 20220320885Abstract: A system for controlling a low voltage DC converter for a vehicle includes the low voltage DC converter configured to step down a voltage of a first battery and output an output voltage; a blower configured to operate using the output voltage of the low voltage DC converter as a power supply voltage; and a low voltage DC converter controller configured to receive information on whether the blower operates and an output setting of the blower, and control a magnitude of the output voltage of the low voltage DC converter, based on the received information on whether the blower operates and an output setting of the blower.Type: ApplicationFiled: September 13, 2021Publication date: October 6, 2022Inventors: Ho Joong Lee, Dong Jun Shin
-
Patent number: 11376976Abstract: A vehicle charger includes a power factor correction converter configured to correct the power factor of alternating current (AC) power is integrated with an input terminal of a DC-DC converter configured to generate a direct-current (DC) voltage having a magnitude required for an energy storage device in the vehicle, thereby reducing the size of the vehicle charger, reducing the number of required elements, and allowing the vehicle charger to have high efficiency; and a method for controlling the same.Type: GrantFiled: November 21, 2019Date of Patent: July 5, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Han Shin Youn, Ho Joong Lee, Hye Seung Kim, Joon Young Jeon, Won Yong Sung, Dong Jun Lee, Young Jin Jang
-
Patent number: 11378626Abstract: A system for managing a battery of a vehicle includes a first controller configured to control a power-on (IG ON) state and a power-off (IG OFF) state of a plurality of controllers in the vehicle and to be periodically woken up in the power-off (IG OFF) state to wake up at least some of the plurality of controllers, and a second controller configured to turn off a main relay connecting a first battery in the vehicle and a vehicle system when the power-off (IG OFF) state begins, to monitor a state of the first battery storing energy for generating power of the vehicle by maintaining power during a preset first reference time, to be woken up at a wake-up period of the first controller when the first reference time elapses, and to monitor the state of the first battery.Type: GrantFiled: December 3, 2020Date of Patent: July 5, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Ki Seung Baek, Ik Jun Choi, Do Sung Hwang, Kyung Taek Jung, Chang Yu Kim, Dea Ki Cheong, Tae Hyuck Kim, Han Seung Myoung, Ho Joong Lee, Hye Seung Kim, Byoung Jik Ahn, Kyu Beom Ko, Hyo Sik Moon, Jong Seo Yoon, Sung Il Lee, Hong Min Oh, Jin Woo Cho
-
Patent number: 11271417Abstract: A method for controlling charge or discharge of a battery in a battery system including a DC converter down-converting an input voltage thereof and outputting an output, a battery connected to an output terminal of the DC converter, and an electric load connected to the output terminal of the DC converter and supplied with electric power from at least one of the DC converter and the battery, may include measuring a temperature of the battery, first controlling, by a controller, an output of the DC converter so that a charging current supplied to the battery from the DC converter becomes a preset maximum value, when the temperature of the battery is lower than a first predetermined temperature, and second controlling, by the controller, the output of the DC converter such that a current of the battery is substantially equal to zero, when the temperature of the battery is higher than a second predetermined temperature which is higher than the first predetermined temperature.Type: GrantFiled: September 6, 2019Date of Patent: March 8, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joong Lee, Hye Seung Kim, Joon Young Jeon, Han Shin Youn, Won Yong Sung, Dong Jun Lee, Young Jin Jang
-
Patent number: 11260766Abstract: A system for controlling a low voltage DC-DC converter for a vehicle is provided. The system includes a low voltage DC-DC converter that converts a voltage of a main battery into a low voltage and outputs the same. An electric device is connected to an output terminal of the low voltage DC-DC converter and a first relay is connected to the output terminal of the low voltage DC-DC converter at a first terminal thereof. An auxiliary battery is connected to a second terminal of the first relay and a controller turns off the first relay and operates the low voltage DC-DC converter to output a minimum voltage capable of operating the electric device when the auxiliary battery is charged to a preset reference value or more while the main battery is being charged.Type: GrantFiled: November 23, 2019Date of Patent: March 1, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Young Jin Jang, Hye Seung Kim, Joon Young Jeon, Han Shin Youn, Ho Joong Lee
-
Publication number: 20220011369Abstract: A system for managing a battery of a vehicle includes a first controller configured to control a power-on (IG ON) state and a power-off (IG OFF) state of a plurality of controllers in the vehicle and to be periodically woken up in the power-off (IG OFF) state to wake up at least some of the plurality of controllers, and a second controller configured to turn off a main relay connecting a first battery in the vehicle and a vehicle system when the power-off (IG OFF) state begins, to monitor a state of the first battery storing energy for generating power of the vehicle by maintaining power during a preset first reference time, to be woken up at a wake-up period of the first controller when the first reference time elapses, and to monitor the state of the first battery.Type: ApplicationFiled: December 3, 2020Publication date: January 13, 2022Inventors: Ki Seung Baek, Ik Jun Choi, Do Sung Hwang, Kyung Taek Jung, Chang Yu Kim, Dea Ki Cheong, Tae Hyuck Kim, Han Seung Myoung, Ho Joong Lee, Hye Seung Kim, Byoung Jik Ahn, Kyu Beom Ko, Hyo Sik Moon, Jong Seo Yoon, Sung Il Lee, Hong Min Oh, Jin Woo Cho
-
Patent number: 11135927Abstract: A four wheel drive vehicle includes: main driving wheels and auxiliary driving wheels; a first driving motor that provides power to the main driving wheels; a second driving motor that provides power to the auxiliary driving wheels; a battery that stores electrical energy; an inverter that converts and provides the electrical energy stored in the battery to the first driving motor; and a bidirectional power converter that generates charging electric power for charging the battery by converting power supplied from the outside of the vehicle and converts and provides the electrical energy stored in the battery to the second driving motor.Type: GrantFiled: November 25, 2019Date of Patent: October 5, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Han Shin Youn, Ho Joong Lee, Hye Seung Kim, Joon Young Jeon, Won Yong Sung, Dong Jun Lee, Young Jin Jang
-
Patent number: 11124083Abstract: A periodic supplementary charge method of an auxiliary battery of a vehicle may include: estimating, by a controller, an available capacity of the auxiliary battery; measuring, by the controller, dark currents of the auxiliary battery; determining, by the controller, a supplementary charging execution time based on the estimated available capacity of the auxiliary battery; determining, by the controller, a supplementary charging execution period based on the estimated available capacity and information about the measured dark currents; and supplementarily charging, by the controller, the auxiliary battery by providing a charging current to the auxiliary battery based on the determined supplementary charging execution time and the determined supplementary charging execution period.Type: GrantFiled: June 28, 2019Date of Patent: September 21, 2021Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Young Jin Jang, Han Shin Youn, Ho Joong Lee
-
Patent number: 11110801Abstract: A fault diagnosis system of a power converter for an electric vehicle includes a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a power supply supplied with power and converting the supplied power to provide the power to a motor, a battery, and an electronic device of a vehicle, a controller connected to the power supply by a connector and controlling charging and discharging of the battery, and operations of the motor and the electronic device of the vehicle by using the power provided from the power supply, and a fault diagnosis circuit connected between the power supply and the controller and diagnosing whether the connector which connects the power supply with the controller malfunctions.Type: GrantFiled: July 24, 2018Date of Patent: September 7, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Han Shin Youn, Ho Joong Lee, Jee Heon Kim, Dong Jun Lee, Hye Seung Kim
-
Publication number: 20210078423Abstract: A vehicle charger includes a power factor correction converter configured to correct the power factor of alternating current (AC) power is integrated with an input terminal of a DC-DC converter configured to generate a direct-current (DC) voltage having a magnitude required for an energy storage device in the vehicle, thereby reducing the size of the vehicle charger, reducing the number of required elements, and allowing the vehicle charger to have high efficiency; and a method for controlling the same.Type: ApplicationFiled: November 21, 2019Publication date: March 18, 2021Inventors: Han Shin Youn, Ho Joong Lee, Hye Seung Kim, Joon Young Jeon, Won Yong Sung, Dong Jun Lee, Young Jin Jang
-
Publication number: 20210001738Abstract: A four wheel drive vehicle includes: main driving wheels and auxiliary driving wheels; a first driving motor that provides power to the main driving wheels; a second driving motor that provides power to the auxiliary driving wheels; a battery that stores electrical energy; an inverter that converts and provides the electrical energy stored in the battery to the first driving motor; and a bidirectional power converter that generates charging electric power for charging the battery by converting power supplied from the outside of the vehicle and converts and provides the electrical energy stored in the battery to the second driving motor.Type: ApplicationFiled: November 25, 2019Publication date: January 7, 2021Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Han Shin YOUN, Ho Joong LEE, Hye Seung KIM, Joon Young JEON, Won Yong SUNG, Dong Jun LEE, Young Jin JANG
-
Publication number: 20200338996Abstract: A system for controlling a low voltage DC-DC converter for a vehicle is provided. The system includes a low voltage DC-DC converter that converts a voltage of a main battery into a low voltage and outputs the same. An electric device is connected to an output terminal of the low voltage DC-DC converter and a first relay is connected to the output terminal of the low voltage DC-DC converter at a first terminal thereof. An auxiliary battery is connected to a second terminal of the first relay and a controller turns off the first relay and operates the low voltage DC-DC converter to output a minimum voltage capable of operating the electric device when the auxiliary battery is charged to a preset reference value or more while the main battery is being charged.Type: ApplicationFiled: November 23, 2019Publication date: October 29, 2020Inventors: Young Jin Jang, Hye Seung Kim, Joon Young Jeon, Han Shin Youn, Ho Joong Lee
-
Publication number: 20200287390Abstract: A method for controlling charge or discharge of a battery in a battery system including a DC converter down-converting an input voltage thereof and outputting an output, a battery connected to an output terminal of the DC converter, and an electric load connected to the output terminal of the DC converter and supplied with electric power from at least one of the DC converter and the battery, may include measuring a temperature of the battery, first controlling, by a controller, an output of the DC converter so that a charging current supplied to the battery from the DC converter becomes a preset maximum value, when the temperature of the battery is lower than a first predetermined temperature, and second controlling, by the controller, the output of the DC converter such that a current of the battery is substantially equal to zero, when the temperature of the battery is higher than a second predetermined temperature which is higher than the first predetermined temperature.Type: ApplicationFiled: September 6, 2019Publication date: September 10, 2020Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joong LEE, Hye Seung KIM, Joon Young JEON, Han Shin YOUN, Won Yong SUNG, Dong Jun LEE, Young Jin JANG
-
Patent number: 10756551Abstract: A charging system with a sensor diagnosis function is provided. The system includes an AC input voltage sensor that detects a voltage of an input end with an AC power applied thereto and a resistor that is connected to the input end. A power factor correction circuit unit adjusts and outputs a power factor of AC power applied through the resistor. An output voltage of the power factor correction circuit unit is applied to a capacity of the system. A controller then diagnoses the AC input voltage sensor based on a value of current passing through the resistor, a value of a voltage of the capacitor, and a resistance value of the resistor.Type: GrantFiled: June 1, 2018Date of Patent: August 25, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joong Lee, Han Shin Youn, Jee Heon Kim, Dong Jun Lee, Hye Seung Kim
-
Publication number: 20200180464Abstract: A periodic supplementary charge method of an auxiliary battery of a vehicle may include: estimating, by a controller, an available capacity of the auxiliary battery; measuring, by the controller, dark currents of the auxiliary battery; determining, by the controller, a supplementary charging execution time based on the estimated available capacity of the auxiliary battery; determining, by the controller, a supplementary charging execution period based on the estimated available capacity and information about the measured dark currents; and supplementarily charging, by the controller, the auxiliary battery by providing a charging current to the auxiliary battery based on the determined supplementary charging execution time and the determined supplementary charging execution period.Type: ApplicationFiled: June 28, 2019Publication date: June 11, 2020Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Young Jin JANG, Han Shin YOUN, Ho Joong LEE