公开(公告)号：US20240272230A1

公开(公告)日：2024-08-15

申请号：US18644543

申请日：2024-04-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Guangyu XU ,  Xinfeng YANG

IPC: G01R31/385 ,  G01R31/388 ,  H01M10/42 ,  H01M10/44

CPC classification number: G01R31/3865 ,  G01R31/388 ,  H01M10/4285 ,  H01M10/446 ,  H01M2010/4271

Abstract: The embodiments of the present disclosure relate to the field of battery technology, and provide a battery lithium plating detection method, device, management system, battery and electric device. The lithium plating detection method may include: charging a to-be-tested battery and stopping charging after the to-be-tested battery has been charged to a first state of charge (SOC), and allowing the to-be-tested battery to rest; obtaining a first voltage of the to-be-tested battery upon completion of electrochemical equilibrium; collecting a second voltage of the to-be-tested battery; and determining that lithium plating has occurred in the to-be-tested battery in case where a difference between the second voltage and the first voltage is greater than a first voltage threshold.

公开(公告)号：US20230307937A1

公开(公告)日：2023-09-28

申请号：US18325106

申请日：2023-05-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan HUANG ,  Shichao LI ,  Haili LI ,  Wei ZHAO ,  Zhen LIN

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/42

CPC classification number: H02J7/00714 ,  H01M10/44 ,  H01M10/425 ,  H01M2010/4271

Abstract: A method for charging a traction battery includes obtaining an actual charging current of a traction battery during a charging process of the traction battery, and determining, based on a degree of the actual charging current exceeding a requested charging current, whether to control the traction battery to be discharged.

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

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/42 ,  B60L58/13

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.

公开(公告)号：US20240039063A1

公开(公告)日：2024-02-01

申请号：US18379222

申请日：2023-10-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Guangyu XU ,  Shuai SONG

IPC: H01M10/42 ,  G01R31/3835 ,  H02J7/00 ,  H01M10/48 ,  H01M10/44

CPC classification number: H01M10/4285 ,  G01R31/3835 ,  H02J7/0068 ,  H01M10/425 ,  H01M10/482 ,  H01M10/441 ,  H01M2010/4271

Abstract: A lithium precipitation detection method may include: sending, when a battery management module in the battery pack determines that a change in a charging voltage of the battery pack meets a predetermined condition, a charging request containing a first current to a charging pile for charging, and controlling the battery pack to be charged with the first current for a first predetermined duration and a second predetermined duration, where the first predetermined duration is equal to the second predetermined duration; obtaining, by the battery management module, a first voltage change amount within the first predetermined duration and a second voltage change amount within the second predetermined duration; and determining, when the battery management module determines that a difference between the second voltage change amount and the first voltage change amount is greater than a predetermined voltage threshold, that lithium precipitation occurs in the battery pack.

公开(公告)号：US20230396089A1

公开(公告)日：2023-12-07

申请号：US18455076

申请日：2023-08-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Shan HUANG ,  Wei LI ,  Shichao LI

IPC: H02J7/00

CPC classification number: H02J7/00714 ,  H02J7/00711 ,  H02J7/0048

Abstract: A charging method for a battery pack includes sending, by a battery management module of the battery pack, a charging request for a first current to a charging pile for charging, controlling, by the battery management module in response to determining that first-current charging of the battery pack meets a first predetermined condition, the battery pack to perform pulse discharge, and controlling, by the battery management module in response to determining that the pulse discharge of the battery pack meets a second predetermined condition, the battery pack to stop discharging, and sending a charging request for a second current to the charging pile for charging. The second current is less than the first current.

公开(公告)号：US20230352664A1

公开(公告)日：2023-11-02

申请号：US18213269

申请日：2023-06-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Songjun SHI ,  Ying SHA ,  Zhen LIN ,  Wei LI

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/131 ,  H01M4/04 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/628 ,  H01M4/131 ,  H01M4/0442 ,  H01M10/052 ,  H01M2004/027

Abstract: This application discloses a negative electrode plate, a preparation method thereof, a secondary battery, a battery module, a battery pack, and an electric apparatus. The negative electrode plate may include a negative electrode current collector and a negative electrode film layer, where the negative electrode film layer may be provided on at least one surface of the negative electrode current collector and may include a negative electrode active material; where at least part of surface of the negative electrode active material may be provided with an artificial solid electrolyte interface film, where the artificial solid electrolyte interface film may include a first inorganic lithium salt, and the first inorganic lithium salt may be selected from one or two of Li2CO3 and Li2SO3.

公开(公告)号：US20230294541A1

公开(公告)日：2023-09-21

申请号：US18325103

申请日：2023-05-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shan HUANG ,  Shichao LI ,  Haili LI ,  Wei ZHAO ,  Zhen LIN

IPC: B60L53/62 ,  H02J7/00 ,  B60L53/66

CPC classification number: B60L53/62 ,  H02J7/007194 ,  H02J7/007182 ,  H02J7/005 ,  B60L53/66 ,  B60L2240/545

Abstract: A method for charging a traction battery applied to a battery management system (BMS) for the traction battery, includes obtaining a temperature and a battery parameter of the traction battery, determining a parameter threshold based on the temperature of the traction battery, 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 of the traction battery being greater than or equal to the parameter threshold and the battery parameter of the traction battery changing by a parameter gap value. The battery parameter includes at least one of a state of charge (SOC) or an open-circuit voltage (OCV).

公开(公告)号：US20240178695A1

公开(公告)日：2024-05-30

申请号：US18433494

申请日：2024-02-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Long SUN ,  Lan XIE ,  Zhen LIN

IPC: H02J7/00

CPC classification number: H02J7/00716 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/007194

Abstract: A charging method may include: sending a first command to a charging device, the first command being used to control the charging device to output an oscillation current to the battery during a first time period in a charging process, where the oscillation current may include n cycle periods, n being a positive integer greater than 1, each of the cycle periods may include a first sub-period and a second sub-period, a current output by the charging device during the first sub-period is a first current, a current output by the charging device during the second sub-period is a second current, and a direction of the first current may be opposite to that of the second current; and sending a second command to the charging device, the second command being used to instruct the charging device to charge the battery during a second time period in the charging process.

公开(公告)号：US20230324472A1

公开(公告)日：2023-10-12

申请号：US18207685

申请日：2023-06-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Zhen LIN ,  Shan HUANG ,  Wei LI ,  Zhonghong LI

IPC: G01R31/52 ,  H02J7/00 ,  G01R31/3842

CPC classification number: G01R31/52 ,  G01R31/3842 ,  H02J7/00036 ,  H02J7/0029

Abstract: Embodiments of the present application provide a detection method and detection device for a battery, a battery management system, and a storage medium. The method may include: acquiring a current voltage of a battery; sending a charging request to a charging device, the charging request including a requested voltage, the charging request being used to request the charging device to output the requested voltage to the battery, where the requested voltage may be smaller than the current voltage; acquiring a current of the battery within a duration in which the charging device outputs the requested voltage to the battery; and determining an internal short circuit condition of the battery according to the current.

公开(公告)号：US20240291056A1

公开(公告)日：2024-08-29

申请号：US18655440

申请日：2024-05-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Shiliang LIN ,  Zhen LIN ,  Shuai SONG ,  Wei LI ,  Zhonghong LI ,  Kai WU

IPC: H01M10/48 ,  H01M10/42 ,  H01M10/44

CPC classification number: H01M10/482 ,  H01M10/441 ,  H01M10/488 ,  H01M2010/4271

Abstract: An electrode assembly short circuit identification method includes: during charging, according to preset sampling time points, sequentially acquiring a voltage of an electrode assembly at each of the sampling time points; judging whether the electrode assembly has a continuous voltage drop according to the voltage acquired at each of the sampling time points; and determining whether the electrode assembly has a short circuit according to a judgment result.