公开(公告)号：US20240385258A1

公开(公告)日：2024-11-21

申请号：US18786663

申请日：2024-07-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei PENG ,  Meijuan ZHOU ,  Shichang ZHANG

IPC: G01R31/396 ,  G01R31/3835 ,  H01M10/44 ,  H01M10/48

Abstract: A battery balancing detection method, apparatus, an electronic device, and a storage medium, wherein the method comprises: performing negative pulse discharging on a battery in response to a battery balancing detection instruction; and determining an unbalancing degree of the battery based on electrical parameters of battery cells in the battery after discharging. The method can avoid detection errors brought about by DCR when detecting the unbalancing degree in the case where current exists when the power battery system is providing electric energy, and can take into account the detection of the unbalancing degree of the battery while detecting the SOH of the battery by means of negative pulses, which is conducive to the improvement of the energy utilization rate and the service life of the battery.

公开(公告)号：US20220209547A1

公开(公告)日：2022-06-30

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：US20230228822A1

公开(公告)日：2023-07-20

申请号：US17950096

申请日：2022-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haijiang WANG ,  Shuting SUN ,  Shichang ZHANG

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

CPC classification number: G01R31/388 ,  G01R31/3648 ,  G01R31/3646 ,  H01M10/425 ,  H01M2010/4271

Abstract: A method for determining a charging time includes obtaining a maximum monomer voltage of a cell of a battery, and under a condition that the maximum monomer voltage is determined to be greater than or equal to a value, determining, based on a charging voltage of the battery, the charging time of the battery.

公开(公告)号：US20210242506A1

公开(公告)日：2021-08-05

申请号：US17234770

申请日：2021-04-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shichang ZHANG ,  Ye CAO ,  Miaomiao ZHANG

IPC: H01M10/42 ,  H01M10/48

Abstract: The present application discloses a battery management system, a processing device, a battery management method, and a battery management and control system. The battery management system includes: an information transmission module configured to transmit, under a condition that it is determined that a connection relationship between unfailing cells of a target battery pack changes when a target failure cell in the target battery pack is isolated, original configuration information of the target battery pack to a processing device, so that the processing device generates adjusted configuration information according to the original configuration information; an information reception module configured to receive the adjusted configuration information transmitted by the processing device, wherein the adjusted configuration information includes an identification of the target failure cell; a management module configured to perform management operations on the unfailing cells of the target battery pack according to the adjusted configuration information.