公开(公告)号：US11762027B2

公开(公告)日：2023-09-19

申请号：US17563857

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu Xu ,  Shichao Li ,  Wei Zhao

IPC: G01R31/388 ,  G01R31/36 ,  H01M10/44 ,  H01M10/42

CPC classification number: G01R31/388 ,  G01R31/3648 ,  H01M10/441 ,  H01M2010/4271

Abstract: An embodiment of this application provides a charging control method and device and a power management controller. The charging control method includes: determining whether battery status of a battery pack meets preset conditions, where the battery pack includes a plurality of battery cells, and the preset conditions are: the battery pack has been left standing for a preset duration, and an open-circuit voltage of each battery cell in the battery pack falls within a preset range; and charging the battery pack based on a charging policy corresponding to a determining result, so that a capacity of a battery cell with a highest remaining capacity in the battery pack reaches a nominal capacity of the battery cell with the highest remaining capacity.

公开(公告)号：US12095303B2

公开(公告)日：2024-09-17

申请号：US17707780

申请日：2022-03-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guangyu Xu ,  Haili Li ,  Wei Zhao

IPC: H02J7/00 ,  G01R31/367 ,  G01R31/3835

CPC classification number: H02J7/00712 ,  G01R31/367 ,  G01R31/3835 ,  H02J7/0029 ,  H02J7/0047

Abstract: This application provides a method and device for detecting charging abnormality, and a storage medium. In this application, a first sampling moment corresponding to a first minimum voltage in n sampled voltages is determined based on n consecutive sampled voltages of a first cell from an end moment of an ith charging phase to an end moment of an (i+1)th charging phase in a kth charging process. A second sampling moment corresponding to a second minimum voltage in any one of the first (k−1)th charging processes can be determined in the same way. Then abnormality of the kth charging process is determined.

公开(公告)号：US11557903B2

公开(公告)日：2023-01-17

申请号：US17488410

申请日：2021-09-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei Peng ,  Guangyu Xu ,  Shichang Zhang ,  Shichao Li

IPC: H02J7/00 ,  H01M10/42 ,  H01M50/51

Abstract: This application embodiment provides a method for equalizing the battery module, an apparatus, a battery module and a power management controller, including: judging whether the first battery core and the second battery core enter their respective fully-charged interval; if the first battery core enters and the second battery core doesn't enter, discharging the first battery core until the second battery core enters; if the first battery core doesn't enter and the second battery core enters, judging whether the maximum value of the first charging voltage of each battery cell in the first battery core is greater than a third preset value; if so, discharging the second battery core until the first battery core enters; if not, controlling both to rest a preset time; after resting for the preset time, discharging the first battery core and the second battery core until the SOC of each battery cell enters a same state.

公开(公告)号：US12050252B2

公开(公告)日：2024-07-30

申请号：US17845362

申请日：2022-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chen Chen ,  Guangyu Xu ,  Wei Zhao

IPC: G01R31/387 ,  G01R31/36 ,  G01R31/3842 ,  G01R31/392

CPC classification number: G01R31/387 ,  G01R31/3648 ,  G01R31/3842 ,  G01R31/392

Abstract: Embodiments of this application relate to the technical field of batteries, and in particular, to a state-of-charge cut-off control method, apparatus and system, and a storage medium. The method includes: obtaining, in a discharging process of a battery, a net discharge capacity of a first battery cell from being fully charged to current time; obtaining an available capacity and a state of health of the first battery cell; obtaining a current remaining dischargeable capacity of the first battery cell; and setting a state of charge SOC of the first battery cell to 0.

公开(公告)号：US11955608B2

公开(公告)日：2024-04-09

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 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00

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