Patents by Inventor Yoon-Jung Bae

Yoon-Jung Bae 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: 20250258238
    Abstract: A battery classification apparatus according to an embodiment of the present disclosure includes: a profile generating unit configured to obtain battery information about capacity and voltage of a battery and generate a differential profile representing a corresponding relationship between the capacity and a differential voltage based on the capacity and the voltage; and a control unit configured to obtain the differential profile from the profile generating unit, detect a plurality of peaks in the obtained differential profile, and classify the battery into any one of a plurality of preset groups based on a plurality of classification conditions preset for the number of the plurality of detected peaks and the differential voltage.
    Type: Application
    Filed: March 10, 2025
    Publication date: August 14, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Yoon-Jung Bae, A-Ming Cha, Hyun-Woo Park
  • Publication number: 20250258242
    Abstract: A battery diagnosis apparatus, a battery diagnosis method and a battery diagnosis system are disclosed. The battery diagnosis apparatus includes a data acquisition unit configured to acquire battery information indicating a time-dependent change history of a terminal voltage and a charge current of a battery during a reference number of charge cycles performed according to a Constant Current (CC)-Constant Voltage (CV) charging protocol for the battery at beginning of life (BOL). The apparatus also includes a control unit configured to calculate an initial CC capacity ratio for each charge cycle of the reference number of charge cycles performed based on the battery information. A first initial CC capacity ratio in a first charge cycle is a ratio of a first CC charge capacity to a total charge capacity of the battery in the first charge cycle, and the first CC charge capacity is a charge capacity in a first CC charging duration according to the CC-CV charging protocol.
    Type: Application
    Filed: June 9, 2023
    Publication date: August 14, 2025
    Inventors: Hee-Seok JEONG, Yoon-Jung BAE
  • Publication number: 20250258244
    Abstract: A method for diagnosing a battery assembly according to one aspect of the present disclosure diagnoses a battery assembly including a battery bank comprising a plurality of battery cells connected in parallel with each other, and the method includes generating a differential profile representing a relationship between a differential capacity, which is obtained by differentiating a capacity of the battery bank with respect to a voltage of the battery bank, and the voltage of the battery bank; and diagnosing a state of the battery bank based on a difference value between a differential capacity value of a target peak located in a predetermined voltage section among a plurality of peaks of the differential profile and a differential capacity value of a valley adjacent to the target peak.
    Type: Application
    Filed: February 7, 2025
    Publication date: August 14, 2025
    Inventors: Min-Seok KIM, Ju-Ri KIM, Yoon-Jung BAE, Hee-Seok JEONG
  • Publication number: 20250258243
    Abstract: A method for diagnosing a battery assembly according to one aspect of the present disclosure diagnoses a battery assembly including a battery bank provided by connecting a plurality of battery cells in parallel with each other, and the method includes generating a second differential profile representing a relationship between a second differential capacity, which is obtained by taking a second derivative of a capacity of the battery bank with respect to a voltage of the battery bank, and the voltage of the battery bank; and detecting a target peak located in a predetermined voltage section among a plurality of peaks of the second differential profile and diagnosing a state of the battery bank based on a second differential capacity value of the target peak.
    Type: Application
    Filed: February 6, 2025
    Publication date: August 14, 2025
    Inventors: Min-Seok KIM, Ju-Ri KIM, Yoon-Jung BAE, Hee-Seok JEONG
  • Patent number: 12388282
    Abstract: A battery management apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a gas amount profile indicating a correspondence relationship between a gas generation amount of a battery and a change amount of a peak; a profile generating unit configured to generate a differential profile for a battery profile indicating a correspondence relationship between a capacity of the battery and a differential voltage; and a control unit configured to determine a change amount of a target peak in the battery profile received from the profile generating unit and set a usage condition of the battery based on a result determined by comparing the determined change amount of the target peak with a control criterion of the gas amount profile.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: August 12, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji-Yeon Kim, Kyung-Hwa Woo, Yoon-Jung Bae
  • Publication number: 20250251463
    Abstract: A battery diagnosing apparatus according to one embodiment of the present disclosure includes: a profile acquisition unit that acquires a battery profile representing a correspondence between a voltage and a capacity of a battery; and a control unit that divides a capacity section of the battery profile into a plurality of sections, derives a target value for one target index related to a differential capacity peak or a charging end voltage among a plurality of diagnosis indices set in advance, from each of the divided sections, compares a correspondence between the derived plurality of target values with a preset reference profile that represents a correspondence between a plurality of target indices, and diagnoses a state of the battery based on a result of the comparison.
    Type: Application
    Filed: January 31, 2025
    Publication date: August 7, 2025
    Inventors: Yoon-Jung Bae, Ju-Ri Kim, Tae-In Kim, Seon-Ho Pak, Kyung-Eun Sun, Hee-Seok Jeong
  • Patent number: 12360171
    Abstract: A battery diagnosing apparatus includes a profile generating unit configured to obtain a battery profile representing a corresponding relationship between voltage and capacity of a battery, and generate a differential profile representing a corresponding relationship between the voltage and a differential capacity for the voltage based on the obtained battery profile, and a control unit configured to receive the differential profile from the profile generating unit, determine a target peak in the differential profile, compare voltages of the determined target peak and a criterion peak of a criterion profile preset for the battery, and judge whether a side reaction occurs in the battery based on the comparison result.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: July 15, 2025
    Assignee: LG Energy Solution, Ltd.
    Inventors: A-Ming Cha, Yoon-Jung Bae
  • Patent number: 12352818
    Abstract: A battery management apparatus according to an embodiment includes a side reaction determining unit configured to determine a target peak in a differential profile representing a corresponding relationship between voltage and differential capacity of a battery, and determine whether a side reaction occurs in the battery by comparing a criterion peak of a preset criterion profile with the target peak. A side reaction cause determining unit is configured to determine a resistance pattern of the battery with respect to a criterion voltage region in a resistance profile representing a corresponding relationship between voltage and resistance of the battery, and determine an occurrence cause of the side reaction based on the determined resistance pattern.
    Type: Grant
    Filed: July 11, 2023
    Date of Patent: July 8, 2025
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Kyung-Hwa Woo, Yoon-Jung Bae
  • Publication number: 20250172617
    Abstract: An apparatus for diagnosing a battery includes a data obtaining unit configured to obtain battery information including voltage and current of a battery during a charging cycle of the battery; and a control unit configured to calculate a constant current charging capacity ratio and a constant voltage charging capacity ratio during the charging cycle based on the battery information, and diagnose a state of the battery based on the constant current charging capacity ratio and the constant voltage charging capacity ratio.
    Type: Application
    Filed: November 1, 2023
    Publication date: May 29, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Yoon-Jung Bae, Kyung-Hwa Woo, Hee-Seok Jeong
  • Publication number: 20250138102
    Abstract: An apparatus for diagnosing a state of a battery includes a voltage measuring unit configured to measure a voltage of a battery and measure a target voltage for the battery when the measured voltage reaches a preset first reference voltage, a resistance measuring unit configured to measure a target resistance of the battery when the measured voltage reaches a preset second reference voltage, and a control unit configured to determine a voltage increase/decrease pattern for the target voltage based on a voltage profile in which the target voltage is stored, determine a resistance increase/decrease pattern for the target resistance based on a resistance profile in which the target resistance is stored, and diagnose a state of the battery from the voltage increase/decrease pattern and the resistance increase/decrease pattern according to a preset diagnostic rule.
    Type: Application
    Filed: September 21, 2023
    Publication date: May 1, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kyung-Hwa Woo, Yoon-Jung Bae
  • Publication number: 20250116718
    Abstract: A battery management apparatus according to an embodiment includes a side reaction determining unit configured to determine a target peak in a differential profile representing a corresponding relationship between voltage and differential capacity of a battery, and determine whether a side reaction occurs in the battery by comparing a criterion peak of a preset criterion profile with the target peak. A side reaction cause determining unit is configured to determine a resistance pattern of the battery with respect to a criterion voltage region in a resistance profile representing a corresponding relationship between voltage and resistance of the battery, and determine an occurrence cause of the side reaction based on the determined resistance pattern.
    Type: Application
    Filed: July 11, 2023
    Publication date: April 10, 2025
    Inventors: Kyung-Hwa WOO, Yoon-Jung BAE
  • Patent number: 12248024
    Abstract: A battery classification apparatus includes a profile generating unit configured to obtain battery information about capacity and voltage of a battery and generate a differential profile representing a corresponding relationship between the capacity and a differential voltage based on the capacity and the voltage, and a control unit configured to obtain the differential profile from the profile generating unit, detect a plurality of peaks in the obtained differential profile, and classify the battery into any one of a plurality of preset groups based on a plurality of classification conditions preset for the number of the plurality of detected peaks and the differential voltage.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: March 11, 2025
    Assignee: LG Energy Solution, Ltd.
    Inventors: Yoon-Jung Bae, A-Ming Cha, Hyun-Woo Park
  • Patent number: 12174262
    Abstract: A battery management apparatus for changing a control condition according to a degradation pattern in a charge situation of a battery cell. Since not only the degradation degree of the battery cell but also the degradation acceleration degree of the battery cell is estimated, the present degradation state of the battery cell may be more accurately estimated, and the future degradation state of the battery cell may also be predicted more accurately.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 24, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Yoon-Jung Bae, A-Ming Cha
  • Patent number: 12149111
    Abstract: Disclosed is an apparatus and method for controlling an operation of a secondary battery using a relative deterioration degree of an electrode. The method includes determining a SOC of the secondary battery whenever a pulse current flows through the secondary battery; determining an electrochemical reaction resistance from a voltage change amount measured during a preset initial time in each pulse current section and determining a lithium ion diffusion resistance from a voltage change amount measured during a remaining time except for the initial time; determining a deterioration-biased electrode by comparing a deterioration diagnosing resistance ratio, which is a relative ratio of the lithium ion diffusion resistance to the electrochemical reaction resistance, with a preset reference deterioration diagnosing resistance ratio; and adaptively adjusting an operation condition of a next charging/discharging cycle according to the type of the deterioration-biased electrode.
    Type: Grant
    Filed: January 4, 2024
    Date of Patent: November 19, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Yoon-Jung Bae, Ji-Yeon Kim, Kyung-Hwa Woo
  • Patent number: 12117501
    Abstract: A battery management apparatus includes a measuring unit configured to measure a first voltage of a battery cell at a first time point and measure a second voltage and a second capacity of the battery cell at a second time point later than the first time point, and a control unit configured to calculate a voltage deviation between the first voltage and the second voltage, calculate a capacity deviation between a first capacity corresponding to the first voltage and the second capacity, determine a positive electrode side reaction factor and a negative electrode side reaction factor for the battery cell based on the voltage deviation and the capacity deviation, and judge the type of a side reaction of the battery cell based on the positive electrode side reaction factor and the negative electrode side reaction factor.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: October 15, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: A-Ming Cha, Yoon-Jung Bae, Kyung-Hwa Woo
  • Patent number: 12092681
    Abstract: A battery management apparatus includes an EIS unit configured to output an AC current to a battery at a plurality of times and generate an EIS profile representing a resistance of the battery as a corresponding relationship between a real part and an imaginary part at each of the plurality of times, and a control unit configured to obtain the plurality of EIS profiles for the battery generated by the EIS unit, determine a plurality of arcs in each of the plurality of EIS profiles, calculate an arc resistance value for each of the plurality of determined arcs, calculate a resistance change rate for the arc resistance value between corresponding arcs among the plurality of arcs, and determine each of the plurality of arcs as a negative electrode-originated arc or a positive electrode-originated arc based on the plurality of calculated resistance change rates and a preset criterion change rate.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: September 17, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Yoon-Jung Bae, A-Ming Cha
  • Publication number: 20240274902
    Abstract: A battery management apparatus and method according to an embodiment of the present disclosure is directed to obtaining a positive electrode profile and a negative electrode profile for a battery cell in a non-destructive manner by appropriately adjusting a preset negative electrode profile. According to one aspect of the present disclosure, by using the battery profile and the adjusted negative electrode profile for the degraded battery cell, there is an advantage that the positive electrode profile of the degraded battery cell may be easily estimated in a non-destructive manner.
    Type: Application
    Filed: April 23, 2024
    Publication date: August 15, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Du-Seong YOON, Dong-Wook KOH, Jin-Hyung LIM, Gwang-Hoon JUN, Jeong-Mi CHOI, Yoon-Jung BAE
  • Publication number: 20240266859
    Abstract: A battery management apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a gas amount profile indicating a correspondence relationship between a gas generation amount of a battery and a change amount of a peak; a profile generating unit configured to generate a differential profile for a battery profile indicating a correspondence relationship between a capacity of the battery and a differential voltage; and a control unit configured to determine a change amount of a target peak in the battery profile received from the profile generating unit and set a usage condition of the battery based on a result determined by comparing the determined change amount of the target peak with a control criterion of the gas amount profile.
    Type: Application
    Filed: June 2, 2023
    Publication date: August 8, 2024
    Inventors: Ji-Yeon KIM, Kyung-Hwa WOO, Yoon-Jung BAE
  • Publication number: 20240248140
    Abstract: An apparatus for diagnosing a battery according to an embodiment of the present disclosure includes a storage unit configured to store bank information about voltage and capacity of each of a plurality of battery banks included in a battery module; and a control unit configured to generate a differential profile for each of the plurality of battery banks based on the bank information, determine a target peak in each of the generated plurality of differential profiles, and diagnose the state of the corresponding battery bank based on the determined target peak.
    Type: Application
    Filed: January 25, 2024
    Publication date: July 25, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Yong-Jun Kim, Yoon-Jung Bae
  • Patent number: 12007449
    Abstract: A battery management apparatus, battery management method and battery pack that detects feature points of each of a first differential capacity curve acquired by charging the battery with a first constant current, a second differential capacity curve acquired by discharging the battery with the first constant current, a third differential capacity curve acquired by charging the battery with a second constant current and a fourth differential capacity curve acquired by discharging the battery with the second constant current, and determines degradation information of the battery based on voltage values of the feature points detected from each differential capacity curve.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: June 11, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: A-Ming Cha, Yoon-Jung Bae