公开(公告)号：US20230216324A1

公开(公告)日：2023-07-06

申请号：US18000077

申请日：2021-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ruichao Tang ,  Xingdi Huang

IPC: H02J7/00

CPC classification number: H02J7/00712

Abstract: A method includes: obtaining a current charging current and voltages of n electrochemical cells; if a difference between a highest voltage in the voltages of the n electrochemical cells and a preset upper limit of a single electrochemical cell charging voltage is less than or equal to a preset difference, determining a derating current, where the preset difference is greater than or equal to 0, the highest voltage is less than or equal to the upper limit of the single electrochemical cell charging voltage, and the derating current is less than the current charging current; and indicating to charge the battery with the derating current.

公开(公告)号：US12119694B2

公开(公告)日：2024-10-15

申请号：US17724923

申请日：2022-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mingwei Zhang ,  Ruichao Tang ,  Yao Yuan ,  Lihou Ma

IPC: G01R31/374 ,  G01R31/3835 ,  H02J7/00

CPC classification number: H02J7/0049 ,  G01R31/374 ,  G01R31/3835 ,  H02J7/0013

Abstract: A battery capacity tracking method and apparatus, and a device are provided. For two batteries connected in series, a first remaining capacity change value corresponding to a first battery when the first battery is switched between a fully charged state and a fully discharged state is obtained; a second remaining capacity change value corresponding to the second battery when the second battery is switched between a fully charged state and a fully discharged state is obtained; and after a remaining capacity change value corresponding to a battery when the battery is switched from one state to another state is obtained, a full charge capacity of the first battery is determined based on the first remaining capacity change value, the second remaining capacity change value, and a full charge capacity of the second battery.