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21.发明申请公开(公告)号：US20200371162A1
公开(公告)日：2020-11-26
申请号：US16856638
申请日：2020-04-23
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jian RUAN , Shichao LI , Mingshu DU , Shenzhi TANG , Yanhua LU , Wei ZHANG
IPC: G01R31/367 , G01R31/3842 , G01R31/36 , G01R31/396 , G01R31/392
Abstract: A method and apparatus for correcting a state of charge (SOC) is provided. The method includes: acquiring state data of a battery cell in a case where the battery cell meets a preset standing condition; determining, when a length of voltage data in the state data is greater than a first preset length and less than a second preset length, and a change value of the voltage data in the state data is greater than a preset change threshold, a first set of pending parameters of a predetermined near-steady-state battery model according to the state data; predicting, according to the first set of pending parameters, a second set of pending parameters of the predetermined near-steady-state battery model; calculating an estimated steady-state OCV value according to the second set of pending parameters; and determining a SOC correction value corresponding to the estimated steady-state OCV value to correct current SOC.
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公开(公告)号：US20230335822A1
公开(公告)日：2023-10-19
申请号：US18340500
申请日：2023-06-23
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shan HUANG , Guangyu XU , Haili LI , Shichao LI
IPC: H01M10/615 , H01M10/44 , H01M10/63 , H01M10/48 , H01M10/42
CPC classification number: H01M10/615 , H01M10/443 , H01M10/63 , H01M10/486 , H01M10/425 , H01M2220/20 , H01M2010/4271
Abstract: A method for charging a power battery includes determining a first charging current for the power battery, determining, according to a temperature of the power battery, whether to perform thermal management of the power battery, determining, in response to determining to perform the thermal management of the power battery, a thermal management current according to the first charging current and charging pile power, and sending the first charging current and the thermal management current to a charging pile. The first charging current is used for charging the power battery and the thermal management current is used for performing the thermal management of the power battery.
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公开(公告)号：US20230307934A1
公开(公告)日：2023-09-28
申请号：US18327702
申请日：2023-06-01
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shan HUANG , Shichao LI , Haili LI , Wei ZHAO , Zhen LIN
CPC classification number: H02J7/0048 , H01M10/44 , H01M10/425 , B60L58/13 , H01M2010/4271 , H01M2220/20
Abstract: A method for charging a traction battery includes obtaining a battery parameter of the traction battery that includes a state of charge and/or an open-circuit voltage, and, during a charging process of the traction battery, controlling the traction battery to discharge or stop being charged in response to the battery parameter changing by a parameter gap value. The parameter gap value is a first preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a first parameter interval, and is a second preset parameter gap value in a scenario in which the battery parameter of the traction battery is in a second parameter interval. The first preset parameter gap value is greater than the second preset parameter gap value, and the battery parameter in the first parameter interval is less than the battery parameter in the second parameter interval.
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Patent Agency Ranking
公开(公告)号：US20230271523A1
公开(公告)日：2023-08-31
申请号：US18313696
申请日：2023-05-08
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Shan HUANG , Shichao LI , Haili LI , Wei ZHAO , Lan XIE
CPC classification number: B60L53/62 , B60L53/66 , H02J7/0071 , H02J7/00716
Abstract: Embodiments of the present application provide a method for charging a traction battery and a battery management system, where the method includes: obtaining a negative electrode potential of a traction battery during a charging process of the traction battery; and controlling the traction battery to be discharged when a difference between the negative electrode potential and a preset potential is less than or equal to a safety threshold. The method and the battery management system in the embodiments of the present application can improve the safety performance of the traction battery.
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公开(公告)号：US20230034272A1
公开(公告)日：2023-02-02
申请号：US17831362
申请日：2022-06-02
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Sitong LIU , Dongyang SHI , Shichao LI , Baiqing LI
IPC: H02J7/00
Abstract: This application provides a charging method and apparatus, a vehicle, and a computer-readable storage medium. The method includes: obtaining a current voltage of a target battery; determining a current power of the target battery based on the current voltage; determining a chargeable power of the target battery based on the current power; and obtaining a real-time voltage of the target battery where the target battery is charged with the chargeable power, where the real-time voltage is used for determining a charge cut-off voltage of the target battery in a next charging.
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公开(公告)号：US20230018810A1
公开(公告)日：2023-01-19
申请号：US17953228
申请日：2022-09-26
Inventor： Linfu LI , Shichao LI
IPC: H02J7/00 , G01R31/36 , G01R31/3835
Abstract: This application provides a battery charging control method and device. Voltages of N cell units in an Mth sampling period are obtained, and a voltage of the battery at each sampling moment among K sampling moments in said sampling period is calculated. Charging of the battery is stopped when the voltage of the battery increases monotonically in the Mth sampling period and a trend of a fitting curve of the voltage of at least one cell unit among the N cell units in said sampling period is not rising.
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公开(公告)号：US20220276310A1
公开(公告)日：2022-09-01
申请号：US17745921
申请日：2022-05-17
Applicant: Contemporary Amperex Technology Co., Limited
Inventor： Jian RUAN , Mingshu Du , Shichao LI , Shenzhi TANG , Yanhua LU , Wei ZHANG
IPC: G01R31/36 , G01R31/388 , G01R31/396
Abstract: The present disclosure discloses a method for identifying a cell, including: determining, for a cell under test during a charge and discharge process, a number N of measured values of OCV and a number N of net cumulative throughputs corresponding to the number N of measured values of OCV; for an ith target cell, obtaining a number N of calculated values of OCV corresponding to the number N of measured values of OCV, and obtaining an OCV mean square error between the number N of measured values of OCV and the number N of calculated values of OCV; and determining that the cell under test is the ith target cell, when the OCV mean square error between the cell under test and the ith target cell is a minimum mean square error among a number M of OCV mean square errors.
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公开(公告)号：US20210146794A1
公开(公告)日：2021-05-20
申请号：US17042965
申请日：2019-11-29
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor： Jian RUAN , Shichao LI , Yanhua LU , Yizhen HOU , Wei ZHANG
Abstract: The present application discloses a charging method, an apparatus, a device, a medium, a battery management system and a charging pile. The method includes: acquiring a charging demand parameter set by a user; calculating, according to the charging demand parameter and acquired actual operation state information of a battery, a target charging scheme for charging the battery; transmitting, according to the target charging scheme, a first charging request to a charging device, so that the charging device charges the battery according to the first charging request. According to the charging method, the apparatus, the device, medium, the battery management system and the charging pile provided in the embodiments of the present application, personalized smart charging can be achieved for different users.
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