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公开(公告)号：US11959968B2
公开(公告)日：2024-04-16
申请号：US17463841
申请日：2021-09-01
发明人： Sagar Bharathraj , Anshul Kaushik , Rajkumar Subhash Patil , Shashishekara Parampalli Adiga , Tae Won Song
IPC分类号： G01R31/367 , B60L58/12 , B60L58/16 , G01R31/371 , G01R31/382 , G01R31/392
CPC分类号： G01R31/367 , B60L58/12 , B60L58/16 , G01R31/371 , G01R31/382 , G01R31/392
摘要： A battery management method and system are provided. The method includes acquiring one or more parameters associated with the battery. The one or more parameters includes a current level, a voltage level, a State of Charge (SOC), and a temperature. The method includes determining a load and energy estimation model based on the one or more acquired parameters. The method includes identifying a power limit of the battery based on the load and energy estimation model. The method includes determining a power margin of the battery at a first usage time interval based on the identified power limit. The method includes performing one or more actions, based on a determination that the power margin of the battery exceeds a predefined threshold level.
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公开(公告)号：US12038484B2
公开(公告)日：2024-07-16
申请号：US17199946
申请日：2021-03-12
IPC分类号： G01R31/387 , G01R31/367 , G01R31/392 , H01M10/48
CPC分类号： G01R31/387 , G01R31/367 , G01R31/392 , H01M10/482
摘要： A method of estimating a maximum specific capacity of a composite electrode includes generating open circuit potential (OCP) crossover characteristics of the composite electrode comprising silicon and natural graphite, determining a composite electrode lithiation limit of the composite electrode based on a silicon lithiation limit of the silicon, predicting a composite electrode composition of the composite electrode based on the composite electrode lithiation limit, and estimating the maximum specific capacity of the composite electrode based on the composite electrode composition.
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公开(公告)号：US11340300B2
公开(公告)日：2022-05-24
申请号：US16839235
申请日：2020-04-03
IPC分类号： G01R31/3842 , G01R31/3167 , G01R31/36 , G01R31/392 , B60L58/13 , H01M10/42 , G01R31/396
摘要： A method and system that enhances a service life of a battery is provided. The method includes values of a set of operational characteristics of a plurality of electrochemically active materials of at least one electrode of the battery. The set of operational characteristics include a voltage, a change in accumulated energy, a change in ohmic resistance, and a change in a rate of change in accumulated energy with respect to a rate of change in ohmic resistance. The values are compared with predefined values of the set of operational characteristics. A rate of depletion and a type of depletion of each of the plurality of electrochemically active materials are determined, and a range of the State of Charge, a range of the voltage, and a range of current to operate the battery for enhanced service life are determined.
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4.发明授权公开(公告)号：US11614489B2
公开(公告)日：2023-03-28
申请号：US17217364
申请日：2021-03-30
IPC分类号： G01R31/36 , H01M10/44 , G01R31/392 , G01N27/22 , G01R31/387 , H01M10/48
摘要： A battery management system (BMS) and method for determining an active material content in an electrode includes determining a first peak in an inverse-differential capacity analysis curve of a the battery, determining a second peak in an incremental capacity analysis (ICA) curve associated with the at least one electrode, mapping the first peak of the inverse-differential capacity analysis curve to the second peak of the ICA curve, determining an active material content in the at least one electrode of the battery based on the mapping, and optimizing a performance of the battery based on the active material content in the at least one electrode.
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公开(公告)号：US11442110B2
公开(公告)日：2022-09-13
申请号：US17165100
申请日：2021-02-02
IPC分类号： G01R31/392 , G01R31/389 , G01R31/371 , H02J7/00 , G01R31/367
摘要： The present disclosure relates to a method and apparatus for accurately detecting an operating status of a battery in a battery system, where the method includes determining a charging profile of a battery in a battery system, identifying a constant voltage and a corresponding constant current in a charging cycle of the charging profile, estimating at least one of a decay constant or an internal resistance associated with the battery, using at least one of the constant voltage or the constant current, comparing the decay constant with a first threshold value or comparing the internal resistance with a second threshold value, and detecting an operating status of the battery to be faulty or healthy, based on the comparison.
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公开(公告)号：US11670953B2
公开(公告)日：2023-06-06
申请号：US17083398
申请日：2020-10-29
IPC分类号： H02J7/00 , H01M10/42 , H01M10/0525 , H01M10/44
CPC分类号： H02J7/007182 , H01M10/0525 , H01M10/425 , H01M10/446 , H01M2010/4271
摘要： A battery management system and method to control charging of a battery is provided. The system determines whether a current capacity of the battery is greater than a predetermined threshold percentage of an original rated capacity of the battery, in response to initiation of a charging cycle of the battery being detected, controls the battery to be charged with a first voltage, in response to the current capacity of the battery being determined to be greater than the predetermined threshold percentage of the original rated capacity of the battery, and controls the battery to be charged with a second voltage, in response to the current capacity of the battery being determined to be less than or equal to the predetermined threshold percentage of the original rated capacity of the battery.
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公开(公告)号：US11581585B2
公开(公告)日：2023-02-14
申请号：US17196094
申请日：2021-03-09
发明人： Manohar Gottapu , Arijit Guha , Shashishekara Parampalli Adiga , Daehyun Kim , Taedong Goh , Youngho Ryu
IPC分类号： H01M10/42 , H01M10/48 , G01R31/3842 , H01M10/44 , G01R31/367
摘要： Methods and electronic devices for estimating state of charge (SOC) of a battery pack. Various embodiments provide a model comprising an (electrical) equivalent circuit model, an electrochemical (thermal) model, and a (convective) thermal model. The model estimates parameters pertaining to each cell of the battery pack individually, and determines the variations in the values of the parameters among each of the cells of the battery pack. The parameters include capacity, temperature current, voltage, and SOC. The parameters are computed based on at current drawn by the battery pack, electrochemical parameters, thermal parameters, and cell internal and connection resistances of the individual cells. Various embodiments compute battery pack uptime, chargeable capacity of the battery pack and SOC of the battery pack, based on the values of the parameters.
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