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：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.