Patents by Inventor Sung-Ju Hong
Sung-Ju Hong 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: 20240133965Abstract: The battery diagnosis method includes calculating, by a battery management system (BMS), a plurality of direct current internal resistances (DCIRs) respectively with respect to a plurality of battery cells based on a plurality of cell voltages and a plurality of cell currents, deriving, by the BMS, an entire representative value of the plurality of DCIRs, calculating, by the BMS, a multi-parallel ideality factor based on a parallel connection number, calculating, by the BMS, a dispersion of the plurality of DCIRs based on the plurality of DCIRs and the entire representative values of the plurality of DCIRs, calculating, by the BMS, an upper limit threshold value of a normal range, and deriving, by the BMS, the normal range based on the upper limit threshold value, and diagnosing a state of a battery pack including the plurality of battery cells according to the normal range.Type: ApplicationFiled: October 11, 2022Publication date: April 25, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sung Ju HONG, Geon CHOI, Dong Hyun KIM, Hyo Seong AN
-
Publication number: 20240128502Abstract: An embodiment solid electrolyte includes a first compound and a second compound. The first compound is represented by a first chemical formula Li7-aPS6-a(X11-bX2b)a, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, and wherein 0<a?2 and 0<b<1, and the second compound is represented by a second chemical formula Li7-cP1-2dMdS6-c-3d(X11-eX2e)c, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, wherein M represents Ge, Si, Sn, or any combination thereof, and wherein 0<c?2, 0<d<0.5, and 0<e<1.Type: ApplicationFiled: August 14, 2023Publication date: April 18, 2024Inventors: Sa Heum Kim, Yong Jun Jang, Yong Gu Kim, Sung Man Cho, Sun Ho Choi, Seong Hyeon Choi, Kyu Sung Park, Young Gyoon Ryu, Suk Gi Hong, Pil Sang Yun, Myeong Ju Ha, Hyun Beom Kim, Hwi Chul Yang
-
Publication number: 20240120763Abstract: A method for controlling battery banks may include measuring bank voltages of the battery banks, determining a first contact resistance of one or more internal resistance components for each of the battery banks, determining a second contact resistance of one or more external resistance components for each of the battery banks, determining a contact resistance for each of the battery banks based on the first contact resistance and the second contact resistance, determining each of compensation bank voltages by subtracting a voltage drop due to a corresponding one of the contact resistances from a respective one of the bank voltages, and controlling the battery banks based on at least one of the bank voltages and the compensation bank voltages. The method may be performed by a battery control system. A battery system using the method is also provided.Type: ApplicationFiled: October 12, 2022Publication date: April 11, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventor: Sung Ju HONG
-
Publication number: 20230194618Abstract: A battery diagnosing apparatus and method capable of diagnosing a state of each battery module based on resistances of a plurality of battery modules are discussed. The state of the battery module may be diagnosed according to whether the measured internal resistance belongs to the first resistance section and the second resistance section, the state of the battery module may be diagnosed with a stricter standard. Accordingly, the diagnosis accuracy for the state of the battery diagnosed by the battery diagnosing apparatus may be improved. The battery diagnosing apparatus can include a resistance measuring unit configured to measure an internal resistance of each of a plurality of battery modules including one or more battery cells, and a control unit configured to receive resistance information about the internal resistance of each of the plurality of battery modules from the resistance measuring unit.Type: ApplicationFiled: November 3, 2021Publication date: June 22, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sung-Ju HONG, Dong-Chun LEE, Geon CHOI, Seog-Jin YOON
-
Patent number: 11677110Abstract: A heater control system for a battery pack and a method for the same in accordance with the present invention relate to a system and a method for the same in which according to temperature deviations generated during heating operations of heaters provided in each battery pack, between battery packs and cells included in the battery packs, each heater is individually controlled to allow the battery packs and the battery cells therein to be heated to a uniform temperature state.Type: GrantFiled: August 24, 2018Date of Patent: June 13, 2023Assignee: LG ENERGY SOLUTION, LTD.Inventors: Sung Ju Hong, Seung Hwan Kim, Seog Jin Yoon
-
Patent number: 11476681Abstract: A battery management apparatus according to the present disclosure may include a sensing unit detachably mounted to a battery system and configured to measure a voltage of a cell assembly included in a battery pack, which is electrically connected to another battery pack in parallel, when being mounted to the battery system; a balancing circuit having a balancing resistor connected to a charging and discharging path of the cell assembly in parallel and a balancing switch for electrically connecting or disconnecting the cell assembly and the balancing resistor; and a processor operably coupled to the sensing unit and the balancing circuit.Type: GrantFiled: October 11, 2019Date of Patent: October 18, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Sung-Ju Hong, Dong-Hyun Kim, Seung-Hwan Kim, Dong-Chun Lee
-
Patent number: 11437837Abstract: The present invention relates to a voltage recognition system of a starting battery and a method of recognizing an off state of an external system using the same, and more particularly, to a driving system of a starting battery and a method of recognizing an off state of an external system using the same, which make it possible to start an engine next time by recognizing the off state of the external system in an overvoltage state according to whether there occurs a difference between values of voltages measured by two ADCs having different positions of ground GND without requiring a current sensor.Type: GrantFiled: September 25, 2019Date of Patent: September 6, 2022Assignee: LG Energy Solution, Ltd.Inventors: Sung Ju Hong, Jeong Wook Kim, Jung Hyun Nam
-
Patent number: 11391779Abstract: A battery capacity estimation apparatus including: a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit storing data including the SOC and the OCV of the battery, the memory unit being connected to the SOC estimation unit; and an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity.Type: GrantFiled: September 18, 2018Date of Patent: July 19, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Sung Ju Hong, Dong Hyun Kim, Seog Jin Yoon
-
Patent number: 11262409Abstract: A battery management apparatus, including: a sensing unit configured to measure a pack voltage value of a battery pack configured to be charged by receiving a charging current from an engine, output a starting current to turn on the engine, and output an operating current to operate electronic components, and a processor configured to: set a first voltage region by using a first current value (CV) of the charging current and an internal resistance value (IRV) of the battery pack, set a second voltage region by using a second CV of the starting current and the IRV, set a third voltage region by using a third CV of the operating current and the IRV, calculate a voltage change amount of the pack voltage value, compare the first, second, and third voltage regions with the voltage change amount, and determine whether the battery pack is charged or discharged.Type: GrantFiled: October 11, 2019Date of Patent: March 1, 2022Assignee: LG Energy Solution, Ltd.Inventors: Sung-Ju Hong, Dong-Hyun Kim
-
Publication number: 20200389034Abstract: A battery management apparatus according to the present disclosure may include a sensing unit detachably mounted to a battery system and configured to measure a voltage of a cell assembly included in a battery pack, which is electrically connected to another battery pack in parallel, when being mounted to the battery system; a balancing circuit having a balancing resistor connected to a charging and discharging path of the cell assembly in parallel and a balancing switch for electrically connecting or disconnecting the cell assembly and the balancing resistor; and a processor operably coupled to the sensing unit and the balancing circuit.Type: ApplicationFiled: October 11, 2019Publication date: December 10, 2020Applicant: LG CHEM, LTD.Inventors: Sung-Ju HONG, Dong-Hyun KIM, Seung-Hwan KIM, Dong-Chun LEE
-
Publication number: 20200386821Abstract: A battery management apparatus, including: a sensing unit configured to measure a pack voltage value of a battery pack configured to be charged by receiving a charging current from an engine, output a starting current to turn on the engine, and output an operating current to operate electronic components, and a processor configured to: set a first voltage region by using a first current value (CV) of the charging current and an internal resistance value (IRV) of the battery pack, set a second voltage region by using a second CV of the starting current and the IRV, set a third voltage region by using a third CV of the operating current and the IRV, calculate a voltage change amount of the pack voltage value, compare the first, second, and third voltage regions with the voltage change amount, and determine whether the battery pack is charged or discharged.Type: ApplicationFiled: October 11, 2019Publication date: December 10, 2020Applicant: LG CHEM, LTD.Inventors: Sung-Ju HONG, Dong-Hyun KIM
-
Patent number: 10840711Abstract: The present disclosure relates to battery cell balancing using duty ratio control, and more particularly, to a battery cell balancing method and system with improved accuracy and efficiency by detecting a temperature of a resistance caused by a current flowing in a battery cell during battery cell balancing, calculating a duty ratio of the battery cell balancing according thereto, and detecting a voltage of the battery cell when a predetermined time elapses after the cell balancing operation.Type: GrantFiled: October 17, 2017Date of Patent: November 17, 2020Assignee: LG CHEM, LTD.Inventors: Sung Ju Hong, Dong Hyun Kim, Seog Jin Yoon
-
Publication number: 20200343759Abstract: The present invention relates to a voltage recognition system of a starting battery and a method of recognizing an off state of an external system using the same, and more particularly, to a driving system of a starting battery and a method of recognizing an off state of an external system using the same, which make it possible to start an engine next time by recognizing the off state of the external system in an overvoltage state according to whether there occurs a difference between values of voltages measured by two ADCs having different positions of ground GND without requiring a current sensor.Type: ApplicationFiled: September 25, 2019Publication date: October 29, 2020Applicant: LG CHEM, LTD.Inventors: Sung Ju HONG, Jeong Wook KIM, Jung Hyun NAM
-
Patent number: 10811887Abstract: The present invention relates to an apparatus and method for providing a charging voltage, and more particularly, to an apparatus and method for providing a charging voltage, which rapidly provide a stable charging voltage to a corresponding cell through a cell balancing voltage source that is one of two separate charging voltage sources, when cell balancing is necessary.Type: GrantFiled: October 17, 2017Date of Patent: October 20, 2020Assignee: LG CHEM, LTD.Inventors: Sung Ju Hong, Ho Chol Nam, Hak In Kim, Seog Jin Yoon
-
Patent number: 10756533Abstract: The present invention relates to a battery pack charging control device that wakes up a micro control unit (MCU) in operation in a sleep mode, while a battery pack is in a constant voltage charged state, the battery pack charging control device including an analog front end (AFE) for changing before the MCU operates in the sleep mode, an over-voltage protection level value to a higher value than a current value, generating an over-voltage trip signal and delivering the over-voltage trip signal to the MCU in operation in the sleep mode to control to wake up the MCU in operation in the sleep mode, when an increased voltage value of the battery pack due to connection of an external charger is equal to or greater than the changed over-voltage protection level value.Type: GrantFiled: August 4, 2016Date of Patent: August 25, 2020Assignee: LG CHEM, LTD.Inventors: Sung Ju Hong, Ho Chol Nam, Dong Hyun Kim, Hak In Kim
-
Publication number: 20200168966Abstract: A heater control system for a battery pack and a method for the same in accordance with the present invention relate to a system and a method for the same in which according to temperature deviations generated during heating operations of heaters provided in each battery pack, between battery packs and cells included in the battery packs, each heater is individually controlled to allow the battery packs and the battery cells therein to be heated to a uniform temperature state.Type: ApplicationFiled: August 24, 2018Publication date: May 28, 2020Applicant: LG CHEM, LTD.Inventors: Sung Ju HONG, Seung Hwan KIM, Seog Jin YOON
-
Publication number: 20200132782Abstract: A battery capacity estimation apparatus including: a battery; a sensing unit connected to the battery to measure an OCV of the battery; an SOC estimation unit connected to the sensing unit to estimate an SOC of the battery using the OCV measured from the sensing unit; a memory unit storing data including the SOC and the OCV of the battery, the memory unit being connected to the SOC estimation unit; and an operation unit connected to the SOC estimation unit and the memory unit, the operation unit being configured to calculate an SOC reduction degree according to a use voltage range change and re-calculate a changed SOC according to a changed use capacity.Type: ApplicationFiled: September 18, 2018Publication date: April 30, 2020Applicant: LG CHEM, LTD.Inventors: Sung Ju HONG, Dong Hyun KIM, Seog Jin YOON
-
Patent number: 10629961Abstract: The present invention relates to a cell balancing system and method, and more particularly, to a cell balancing system and method capable of supplying a charging voltage through two separately configured charging voltage sources and stably performing cell balancing by supplying a proper charging voltage to a corresponding cell through an individually configured switch in each cell, when the cell balancing is necessary.Type: GrantFiled: October 17, 2017Date of Patent: April 21, 2020Assignee: LG CHEM, LTD.Inventors: Sung Ju Hong, Ho Chol Nam, Hak In Kim, Seog Jin Yoon
-
Publication number: 20190052099Abstract: The present invention relates to an apparatus and method for providing a charging voltage, and more particularly, to an apparatus and method for providing a charging voltage, which rapidly provide a stable charging voltage to a corresponding cell through a cell balancing voltage source that is one of two separate charging voltage sources, when cell balancing is necessary.Type: ApplicationFiled: October 17, 2017Publication date: February 14, 2019Applicant: LG CHEM, LTD.Inventors: Sung Ju HONG, Ho Chol NAM, Hak In KIM, Seog Jin YOON
-
Publication number: 20190052098Abstract: The present disclosure relates to battery cell balancing using duty ratio control, and more particularly, to a battery cell balancing method and system with improved accuracy and efficiency by detecting a temperature of a resistance caused by a current flowing in a battery cell during battery cell balancing, calculating a duty ratio of the battery cell balancing according thereto, and detecting a voltage of the battery cell when a predetermined time elapses after the cell balancing operation.Type: ApplicationFiled: October 17, 2017Publication date: February 14, 2019Applicant: LG CHEM, LTD.Inventors: Sung Ju HONG, Dong Hyun KIM, Seog Jin YOON