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公开(公告)号：US20230314516A1
公开(公告)日：2023-10-05
申请号：US18025110
申请日：2021-12-23
发明人： Sun Jong LEE , Cheoltaek KIM
IPC分类号： G01R31/367 , H01M10/48 , G01R31/382 , G01R31/36 , G01R31/396
CPC分类号： G01R31/367 , H01M10/48 , G01R31/382 , G01R31/3648 , G01R31/396 , H01M2010/4271
摘要： A method for predicting a constant current discharge graph for a battery cell according to one feature of the invention includes: measuring a first time required for the battery cell voltage to decrease to a first discharge limit voltage by a first constant current discharge; measuring a second time required for the battery cell voltage to decrease to a second discharge limit voltage by a second constant current discharge; and calculating a proportional constant and an index parameter in the relationship between the constant current and the discharge time during a discharging based on the first constant current and the first time, and the second constant current and the second time.
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公开(公告)号：US20230266402A1
公开(公告)日：2023-08-24
申请号：US18012462
申请日：2021-12-23
发明人： Sun Jong LEE , Cheoltaek KIM
IPC分类号： G01R31/396 , G01R31/367 , G01R31/3842 , H02J7/00 , H01M10/48
CPC分类号： G01R31/396 , G01R31/367 , G01R31/3842 , H02J7/0047 , H01M10/486 , H01M10/482 , H02J7/007182 , H01M2010/4271
摘要： A method of predicting a maximum discharge current for a battery cell includes: receiving a discharge time and a discharge limitation voltage; setting a discharge reference voltage; obtaining a proportional constant and an index parameter corresponding to the discharge reference voltage, wherein the proportional constant and the index parameter are applied to a relation between a constant current and a discharge time during a discharge; calculating a constant current for the discharge time by using the proportional constant and the index parameter; and adjusting the discharge reference voltage when a difference between a temporary discharge limitation voltage at which a voltage due to the constant current and an internal resistance of the battery cell is dropped from the discharge reference voltage and the discharge limitation voltage deviates from a predetermined error.
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公开(公告)号：US20230145602A1
公开(公告)日：2023-05-11
申请号：US17912613
申请日：2021-09-13
发明人： Sun Jong LEE , Cheoltaek KIM , Young Ho KWON , Yong Chul SUNG
IPC分类号： G01R31/388 , G01R31/367 , G01R31/36 , H01M10/48
CPC分类号： G01R31/388 , G01R31/367 , G01R31/3648 , H01M10/48
摘要： A battery apparatus estimates a surface SOC representing a potential at an electrode surface of the battery, and predicts an output of the battery during a requested time based on the first surface SOC, a cut-off voltage, and the requested time.
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公开(公告)号：US20230296681A1
公开(公告)日：2023-09-21
申请号：US17918980
申请日：2021-06-28
发明人： Yong Chul SUNG , Cheoltaek KIM , Incheol YEOM
IPC分类号： G01R31/3842 , H01M10/48 , G01R31/367 , H01M10/42 , G01R31/389
CPC分类号： G01R31/3842 , H01M10/486 , G01R31/367 , H01M10/425 , G01R31/389 , H01M2220/20
摘要： A battery apparatus receives a measured current of a battery and estimates a surface SOC representing a potential at an electrode surface of the battery based on a plurality of parameters. The plurality of parameters includes a first parameter determined based on the measured current and a second parameter determined based on an SOC of the battery.
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公开(公告)号：US20230168307A1
公开(公告)日：2023-06-01
申请号：US17919530
申请日：2021-09-14
发明人： Seongjun YUN , Taekyu KANG , Cheoltaek KIM
IPC分类号： G01R31/389 , G01R31/367 , G01R31/374 , G01R31/3842 , H01M10/48 , H01M10/46 , H02J7/00
CPC分类号： G01R31/389 , G01R31/367 , G01R31/374 , G01R31/3842 , H01M10/486 , H01M10/46 , H02J7/0068 , H02J7/0047 , H01M2010/4271
摘要： A processor of a battery apparatus estimates an internal resistance of a battery at a reference temperature based on a measured voltage of the battery, a measured current of the battery, an open circuit voltage of the battery, and a measured temperature of the battery, and estimates a resistance state of the battery based on the estimated internal resistance and a beginning of life (BOL) resistance at the reference temperature when the battery is in a BOL state.
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