公开(公告)号：US20190219640A1

公开(公告)日：2019-07-18

申请号：US16365352

申请日：2019-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bingxiao LIU ,  Guanghui ZHANG ,  Yuejiu ZHENG

IPC: G01R31/387 ,  G01R31/3842 ,  G01R31/02 ,  G01R19/165 ,  H01M10/42 ,  B60L3/00

CPC classification number: G01R31/387 ,  B60L3/0046 ,  G01R19/16542 ,  G01R31/025 ,  G01R31/36 ,  G01R31/3842 ,  H01M10/425 ,  H01M2010/4271

Abstract: A method and an apparatus for detecting a micro short circuit of a battery are provided. The detection method includes: obtaining a first reference charge capacity at a first charging end moment and a second reference charge capacity at a second charging end moment of a to-be-detected single battery included in a to-be-detected battery pack (S201), where the reference charge capacity is a difference between an electric quantity of the to-be-detected single battery and an electric quantity of a reference single battery, and the reference single battery is a single battery, which has a largest voltage value at a charging end moment, in all single batteries included in the to-be-detected battery pack; and determining, based on a difference between the first reference charge capacity and the second reference charge capacity, that a micro short circuit occurs in the to-be-detected single battery.