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公开(公告)号：US12085623B2
公开(公告)日：2024-09-10
申请号：US17917400
申请日：2021-12-03
发明人： Soon-Ju Choi , Dae-Soo Kim , Young-Deok Kim , Su-Won Jee , Hyun-Jun Choi
IPC分类号： G01R31/392 , G01R19/00 , G01R31/367 , G01R31/385 , G01R31/388 , G01R31/389 , G01R31/396
CPC分类号： G01R31/392 , G01R19/0038 , G01R31/367 , G01R31/3865 , G01R31/388 , G01R31/389 , G01R31/396
摘要： A battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal extracted from the secondary battery, including memory to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage sensor to measure a voltage of a target battery during a charge or discharge process, and a processor to generate a plurality of charge and discharge measurement profiles based on voltages measured at a plurality of different time points, compare each of the generated charge and discharge measurement profiles with a simulation profile obtained from the positive and negative electrode reference profiles, and determine positive and negative electrode adjustment profiles for each of the generated charge and discharge measurement profiles so that an error between each charge and discharge measurement profile and the simulation profile is within a predetermined level.
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2.发明公开公开(公告)号：US20240275200A1
公开(公告)日：2024-08-15
申请号：US18437382
申请日：2024-02-09
发明人： Young-Deok Kim , Dae-Soo Kim , Soon-Ju Choi
CPC分类号： H02J7/007182 , H02J7/0013 , H02J7/0048 , H01M10/441
摘要： A battery management apparatus includes: a voltage meter that measures voltages of a plurality of batteries connected in series to each other; and a controller that estimates State of Charges (SOCs) of the plurality of batteries based on the measured voltages, and control charge and discharge of the plurality of batteries to make the estimated SOCs of the plurality of batteries fall within a plurality of usable SOC bands preset to correspond to the plurality of batteries.
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公开(公告)号：US12066496B2
公开(公告)日：2024-08-20
申请号：US17918730
申请日：2021-12-03
发明人： Soon-Ju Choi , Dae-Soo Kim , Young-Deok Kim , Su-Won Jee , Hyun-Jun Choi
IPC分类号： G01R31/396 , G01R31/367 , H01M10/44
CPC分类号： G01R31/396 , G01R31/367 , H01M10/44 , H01M2220/20
摘要： A secondary battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal of the secondary battery, including a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process, and a processor configured to generate a charge and discharge measurement profile based on the voltage, compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile with the generated charge and discharge measurement profile, and determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level.
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公开(公告)号：US12025671B2
公开(公告)日：2024-07-02
申请号：US17915171
申请日：2021-07-30
发明人： Hyun-Jun Choi , Dae-Soo Kim , Young-Deok Kim , Su-Won Jee
IPC分类号： G01R31/3842
CPC分类号： G01R31/3842
摘要： An overvoltage characteristics evaluation apparatus for a battery includes a sensing unit to measure a current and a voltage of the battery, and a control unit to determine a measured capacity history and a measured voltage history of the battery during a discharge event executed subsequent to polarization-inducing pretreatment for the battery. The control unit determines a first measured voltage curve indicating a correlation between the measured capacity history and the measured voltage history, and a second measured voltage curve indicating a correlation between a depth of discharge history obtained by normalizing the measured capacity history to a total discharge capacity of the measured capacity history and the measured voltage history. The control unit determines a differential voltage curve by differentiating the measured voltage history. The control unit determines overvoltage characteristics information associated with the polarization-inducing pretreatment by comparing the differential voltage curve with a reference differential voltage curve.
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公开(公告)号：US11821960B2
公开(公告)日：2023-11-21
申请号：US17626652
申请日：2020-11-26
发明人： Ji-Yeon Kim , Young-Deok Kim , Yoon-Jung Bae
IPC分类号： G01R31/392 , G01R31/3835 , G01R31/36 , H01M10/44
CPC分类号： G01R31/392 , G01R31/3648 , G01R31/3835 , H01M10/44
摘要： An apparatus for diagnosing a degree of degradation of a battery includes a measuring unit configured to measure a voltage of each of a plurality of battery cells in each of a plurality of cycles where charging and discharging is performed and output voltage information about the plurality of measured voltages, and a control unit configured to receive the plurality of voltage information, calculate a voltage deviation of each cycle for each battery cell based on a reference voltage of each of the plurality of battery cells, select a cycle section satisfying a predetermined condition for each of the plurality of battery cells based on the calculated voltage deviation, calculate a voltage deviation change rate corresponding to each of the plurality of selected cycle sections, and diagnose a relative degree of degradation of the plurality of battery cells based on the plurality of calculated voltage deviation change rates.
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公开(公告)号：US20230333174A1
公开(公告)日：2023-10-19
申请号：US17766778
申请日：2021-04-29
发明人： Hyun-Jun Choi , Young-Deok Kim , Dae-Soo Kim , Su-Won Jee
IPC分类号： G01R31/392 , G01R31/3842
CPC分类号： G01R31/392 , G01R31/3842
摘要： An apparatus and method for diagnosing a state of a battery in various aspects based on a differential profile respectively obtained in a situation where the battery is charged and discharged. Since the state of the battery is diagnosed by considering both the first differential profile related to the charging of the battery and the second differential profile related to the discharging of the battery, there is an advantage of diagnosing the state of the battery more accurately.
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公开(公告)号：US20230194620A1
公开(公告)日：2023-06-22
申请号：US17924282
申请日：2021-04-27
发明人： Hyun-Jun Choi , Dae-Soo Kim , Young-Deok Kim , Bo-Mi Lim
IPC分类号： G01R31/392 , G01R31/367 , G01R31/388
CPC分类号： G01R31/392 , G01R31/367 , G01R31/388
摘要： An apparatus for diagnosing a state of a battery includes a profile obtaining unit configured to obtain a voltage profile of a battery for voltage and capacity of the battery, and a control unit configured to obtain a differential profile for the voltage and the capacity from the voltage profile, select a plurality of peaks included in a predetermined voltage section of the obtained differential profile, determine a first peak associated with a negative electrode and a second peak associated with a positive electrode among the plurality of selected peaks, compare the first peak and the second peak with a first reference peak and a second reference peak of a preset reference profile, respectively, and diagnose a state of the battery based on at least one of a efdifference between the first peak and the first reference peak or a efdifference between the second peak and the second reference peak.
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公开(公告)号：US12044744B2
公开(公告)日：2024-07-23
申请号：US17766778
申请日：2021-04-29
发明人： Hyun-Jun Choi , Young-Deok Kim , Dae-Soo Kim , Su-Won Jee
IPC分类号： G01R31/392 , G01R31/3842
CPC分类号： G01R31/392 , G01R31/3842
摘要： An apparatus and method for diagnosing a state of a battery in various aspects based on a differential profile respectively obtained in a situation where the battery is charged and discharged. Since the state of the battery is diagnosed by considering both the first differential profile related to the charging of the battery and the second differential profile related to the discharging of the battery, there is an advantage of diagnosing the state of the battery more accurately.
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公开(公告)号：US11874330B2
公开(公告)日：2024-01-16
申请号：US17626188
申请日：2020-09-09
发明人： Ji-Yeon Kim , Dae-Soo Kim , Young-Deok Kim
IPC分类号： G01R31/3842 , G01R31/36 , H01M10/42 , H01M10/44 , G01R31/392
CPC分类号： G01R31/3842 , G01R31/3644 , H01M10/425 , H01M10/44 , G01R31/392 , H01M2010/4271
摘要： A battery management apparatus is configured to diagnose a state of a battery cell based on a capacity-voltage differential profile. Specifically, the battery management apparatus diagnoses a state of the battery cell according to a change pattern of a peak associated with a positive electrode reaction area and a peak associated with an available lithium loss in the capacity-voltage differential profile. The state of the battery cell may be diagnosed in real time even while the battery cell is in operation. In addition, it is possible to independently diagnose whether the positive electrode reaction area of the battery cell is reduced and whether available lithium is lost.
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公开(公告)号：US20230236262A1
公开(公告)日：2023-07-27
申请号：US17918730
申请日：2021-12-03
发明人： Soon-Ju Choi , Dae-Soo Kim , Young-Deok Kim , Su-Won Jee , Hyun-Jun Choi
IPC分类号： G01R31/396 , G01R31/367 , H01M10/44
CPC分类号： G01R31/396 , G01R31/367 , H01M10/44 , H01M2220/20
摘要： A secondary battery diagnosing technology capable of effectively diagnosing a state of a secondary battery using a charge and discharge signal of the secondary battery, including a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process, and a processor configured to generate a charge and discharge measurement profile based on the voltage, compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile with the generated charge and discharge measurement profile, and determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level.
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