Patents by Inventor Do Sung Hwang
Do Sung Hwang 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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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
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Patent number: 11366167Abstract: A system for managing a battery of a vehicle includes a battery, a main relay connected to the battery to transfer or block power of the battery to components in the vehicle, and a controller. The controller is configured to control the components in the vehicle to be in a power-off (IG OFF) state and turning off the main relay when receiving a vehicle power-off input, and to determine whether or not the battery is abnormal by calculating a parameter for determining a state of the battery and comparing the calculated parameter with a plurality of reference values that are preset.Type: GrantFiled: December 2, 2020Date of Patent: June 21, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Ki Seung Baek, Jong Seo Yoon, Do Sung Hwang, Jae Hoon Choi
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Publication number: 20220144132Abstract: Disclosed is a system for managing a vehicle battery that is chargeable/dischargeable and stores energy for driving a vehicle driving motor. The system for managing the vehicle battery as disclosed includes a controller that measures a polarization voltage of each of a plurality of battery cells in a vehicle battery after charging of the vehicle battery is terminated, and determines whether each of the plurality of battery cells is abnormal based on the measured polarization voltage.Type: ApplicationFiled: November 5, 2021Publication date: May 12, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Dae Gun JIN, Woo Sung KIM, Kyung In MIN, Do Sung HWANG, Ki Seung BAEK, Dong Il KIM, Yoon Jun LEE, Bo Ram YANG, Ki Chul HONG, Ik Kyu KIM, Sung Il LEE, Jae Shin YI, Young Woo LEE, Soo Yang JIN, Suk Hyung KIM, Hyun Soo PARK
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Publication number: 20220144128Abstract: A system for managing a vehicle battery that is chargeable/dischargeable and stores energy for driving a vehicle driving motor is disclosed. The system for managing a vehicle battery as disclosed includes a controller that receives a voltage of each of a plurality of battery cells in a vehicle battery, a temperature of the vehicle battery, and an insulation resistance of the vehicle battery, determines a reference value based on a deviation between voltages of the plurality of battery cells and the temperature of the vehicle battery, and determines whether the vehicle battery is abnormal by comparing the determined reference value with the insulation resistance.Type: ApplicationFiled: November 4, 2021Publication date: May 12, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Hyun Jin PARK, Woo Sung KIM, Kyung In MIN, Do Sung HWANG, Ki Seung BAEK, Dong Il KIM, Dae Gun JIN, Yoon Jun LEE, Bo Ram YANG, Ki Chul HONG, Ik Kyu KIM, Sung Il LEE, Jae Shin YI, Young Woo LEE, Soo Yang JIN, Suk Hyung KIM, Hyun Soo PARK
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Publication number: 20220144097Abstract: A system for managing a vehicle battery that is chargeable/dischargeable and stores energy for driving a vehicle driving motor is disclosed. The system for managing a vehicle battery as disclosed includes a controller that measures a voltage of each of a plurality of battery cells in a vehicle battery when a voltage applied to the vehicle battery is constant, and determines whether the plurality of battery cells is abnormal based on a deviation between the measured voltages of the plurality of battery cells.Type: ApplicationFiled: November 5, 2021Publication date: May 12, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Sung Il LEE, Woo Sung KIM, Kyung In MIN, Do Sung HWANG, Ki Seung BAEK, Dong Il KIM, Dae Gun JIN, Yoon Jun LEE, Bo Ram YANG, Ki Chul HONG, Ik Kyu KIM, Jae Shin Yi, Young Woo LEE, Soo Yang JIN, Hyun Jin PARK, Suk Hyung KIM, Hyun Soo PARK
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Publication number: 20220144131Abstract: The present invention relates to a battery diagnosis system and method, and disclosed is a battery diagnosis system including a receiving unit that receives information on a high voltage battery and charge state information of the high voltage battery of a vehicle being charged; a control unit that controls a current of the high voltage battery; a measurement unit that measures a voltage change amount of the high voltage battery in which the current is controlled; and a determination unit that determines the battery having the voltage change amount of an abnormal battery among the voltage change amounts of the battery measured in the measurement unit.Type: ApplicationFiled: November 5, 2021Publication date: May 12, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Jae Shin YI, Woo Sung KIM, Kyung In MIN, Do Sung HWANG, Ki Seung BAEK, Dong Il KIM, Dae Gun JIN, Yoon Jun LEE, Bo Ram YANG, Ki Chul HONG, Ik Kyu KIM, Sung Il LEE, Young Woo LEE, Soo Yang JIN, Suk Hyung KIM, Hyun Soo PARK
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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
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Publication number: 20220011368Abstract: A system for managing a battery of a vehicle includes a battery, a main relay connected to the battery to transfer or block power of the battery to components in the vehicle, and a controller. The controller is configured to control the components in the vehicle to be in a power-off (IG OFF) state and turning off the main relay when receiving a vehicle power-off input, and to determine whether or not the battery is abnormal by calculating a parameter for determining a state of the battery and comparing the calculated parameter with a plurality of reference values that are preset.Type: ApplicationFiled: December 2, 2020Publication date: January 13, 2022Inventors: Ki Seung Baek, Jong Seo Yoon, Do Sung Hwang, Jae Hoon Choi
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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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Patent number: 10550818Abstract: An apparatus for controlling a start sequence of an engine for a vehicle may include an engine, a motor configured to start the engine, a main switch configured to connect power to the motor or interrupt the power to be supplied to the motor, a main battery configured to supply the power to the motor through the main switch, a converter configured to step up a voltage of the motor by boosting reverse power through a reverse control operation, an auxiliary battery configured to supply the reverse power, and a converter controller configured to perform a pre-charging operation for a predetermined time through the reverse control operation when an ignition-ON signal is inputted, and close the main switch when the pre-charging operation is completed.Type: GrantFiled: December 12, 2017Date of Patent: February 4, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Kwang-Seok Choi, Do-Sung Hwang, Jeong-Hye Choi, Ki-Hong Kang
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Publication number: 20190176641Abstract: The present disclosure provides methods for charging a battery of an electric vehicle, which relates to a technology for preventing deterioration of a battery embedded in an electric vehicle while simultaneously improving a charging speed of the battery. The battery charging method includes dividing a total State of Charge (SOC) section of a battery into a plurality of steps, and performing constant current based charging in each of the plurality of steps, and performing constant voltage-based charging at a predetermined voltage during the constant current based charging for each step of the plurality of steps.Type: ApplicationFiled: May 14, 2018Publication date: June 13, 2019Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Ki Seung BAEK, Do Sung HWANG
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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: 10266062Abstract: A system for charging a vehicle battery includes a relay configured to establish/interrupt electrical connection between the vehicle battery and a vehicle system supplied with power from the vehicle battery, and a controller. The controller is configured to monitor a voltage of the battery, control the relay to interrupt the electrical connection when a voltage of the battery is less than or equal to a first predetermined reference value, and control the relay to establish the electrical connection when a predetermined condition is satisfied while the relay is electrically disconnected. The controller controls the relay to be electrically connected to charge the battery through an external power source while the electrical connection is interrupted, and then control a connection state of the relay based on the voltage of the battery, a voltage and current of the relay at a side of the vehicle system, and whether a vehicle is started.Type: GrantFiled: December 9, 2016Date of Patent: April 23, 2019Assignee: Hyundai Motor CompanyInventors: Hui Tae Yang, Kyung Ho Kim, Woo Sung Kim, Kyung In Min, Do Sung Hwang, Jae Hoon Choi, Beom Joo Kwon, Dong Gil Ha, Beom Gyu Kim, Jong Hu Yoon, Bo Ram Yang, Hee Sung Moon, Yu Seok Kim, Jung Je Woo, Suk Hyung Kim, Hyun Soo Park
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Patent number: 10263438Abstract: A battery management system for a vehicle is provided. The system is capable of preventing vehicle malfunction by preventing overcharge and over-discharge of a low-voltage battery by providing a controller that is configured to receive power transmitted from a first connection line and power transmitted from a second connection line. The battery management system includes a relay configured to electrically connect and disconnect power that is supplied from a battery to loads. The system also includes a controller configured to receive a first regular power transmitted through a connection line between the battery and the relay and a second regular power transmitted through a connection line between the relay and the loads. The controller is further configured to turn the relay on and off.Type: GrantFiled: December 12, 2016Date of Patent: April 16, 2019Assignee: HYUNDAI MOTOR COMPANYInventors: Jong Hu Yoon, Mi Ok Kim, Kyung In Min, Do Sung Hwang, Jae Hoon Choi, Kyung Ho Kim, Beom Gyu Kim, Hee Tae Yang, Yu Seok Kim, Hyo Sik Moon, Suk Hyung Kim, Beom Joo Kwon
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Publication number: 20180298862Abstract: An apparatus for controlling a start sequence of an engine for a vehicle may include an engine, a motor configured to start the engine, a main switch configured to connect power to the motor or interrupt the power to be supplied to the motor, a main battery configured to supply the power to the motor through the main switch, a converter configured to step up a voltage of the motor by boosting reverse power through a reverse control operation, an auxiliary battery configured to supply the reverse power, and a converter controller configured to perform a pre-charging operation for a predetermined time through the reverse control operation when an ignition-ON signal is inputted, and close the main switch when the pre-charging operation is completed.Type: ApplicationFiled: December 12, 2017Publication date: October 18, 2018Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Kwang-Seok Choi, Do-Sung Hwang, Jeong-Hye Choi, Ki-Hong Kang
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Patent number: 9977082Abstract: A system and method for detecting a fusion of a relay of a battery is provided. The method includes detecting the fusion of the relay during disengagement of an ignition of a vehicle and determining the fusion status of the relay during engagement of the ignition of the vehicle. The method includes adjusting a first relay to an off position, after disengaging an ignition, and determining whether the fusion status of first relay based on measuring a voltage of an interval between the adjusting the first relay to an off position and adjusting a second relay to an off position. Then the second relay may be adjusted to the off position.Type: GrantFiled: November 17, 2015Date of Patent: May 22, 2018Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Do Sung Hwang, Hyun Soo Park
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Publication number: 20180086220Abstract: A system for charging a vehicle battery includes a relay configured to establish/interrupt electrical connection between the vehicle battery and a vehicle system supplied with power from the vehicle battery, and a controller. The controller is configured to monitor a voltage of the battery, control the relay to interrupt the electrical connection when a voltage of the battery is less than or equal to a first predetermined reference value, and control the relay to establish the electrical connection when a predetermined condition is satisfied while the relay is electrically disconnected. The controller controls the relay to be electrically connected to charge the battery through an external power source while the electrical connection is interrupted, and then control a connection state of the relay based on the voltage of the battery, a voltage and current of the relay at a side of the vehicle system, and whether a vehicle is started.Type: ApplicationFiled: December 9, 2016Publication date: March 29, 2018Applicant: HYUNDAI MOTOR COMPANYInventors: Hui Tae Yang, Kyung Ho Kim, Woo Sung Kim, Kyung In Min, Do Sung Hwang, Jae Hoon Choi, Beom Joo Kwon, Dong Gil Ha, Beom Gyu Kim, Jong Hu Yoon, Bo Ram Yang, Hee Sung Moon, Yu Seok Kim, Jung Je Woo, Suk Hyung Kim, Hyun Soo Park
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Patent number: 9910121Abstract: Provided are apparatuses and methods for diagnosing failure of a current sensor of a battery system for an eco-friendly vehicle. One apparatus for diagnosing failure of a current sensor of a battery system for an eco-friendly vehicle includes a high voltage battery, a current sensor configured to measure a current output from the high voltage battery, and a controller configured to measure an offset current through the current sensor when an ignition key is turned off or turned on, and diagnose failure of the current sensor on the basis of the measured offset current.Type: GrantFiled: November 3, 2015Date of Patent: March 6, 2018Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventor: Do Sung Hwang
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Publication number: 20180013297Abstract: A battery management system for a vehicle is provided. The system is capable of preventing vehicle malfunction by preventing overcharge and over-discharge of a low-voltage battery by providing a controller that is configured to receive power transmitted from a first connection line and power transmitted from a second connection line. The battery management system includes a relay configured to electrically connect and disconnect power that is supplied from a battery to loads. The system also includes a controller configured to receive a first regular power transmitted through a connection line between the battery and the relay and a second regular power transmitted through a connection line between the relay and the loads. The controller is further configured to turn the relay on and off.Type: ApplicationFiled: December 12, 2016Publication date: January 11, 2018Applicant: HYUNDAI MOTOR COMPANYInventors: Jong Hu Yoon, Mi Ok Kim, Kyung In Min, Do Sung Hwang, Jae Hoon Choi, Kyung Ho Kim, Beom Gyu Kim, Hee Tae Yang, Yu Seok Kim, Hyo Sik Moon, Suk Hyung Kim, Beom Joo Kwon
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Publication number: 20170115370Abstract: An apparatus and a method of diagnosing a current sensor of an eco-friendly vehicle is provided. A fault is detected in a current range between disconnection and short-circuit of a current sensor by monitoring whether a load using a high voltage in the eco-friendly vehicle is operated to detect a fault of the current sensor sensing an output current of a high voltage battery. The apparatus includes the current sensor configured to sense an output current of a high voltage battery and a load monitor that monitors whether a load in the eco-friendly vehicle is operated. A controller then detects an abnormality in the current sensor when the current sensor senses a current exceeding a first threshold value and the load is not operated.Type: ApplicationFiled: May 25, 2016Publication date: April 27, 2017Inventors: Jung Moon Chang, Do Sung Hwang