公开(公告)号：US20230223767A1

公开(公告)日：2023-07-13

申请号：US18180649

申请日：2023-03-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shuhao Deng ,  Denghai Pan ,  Hong Tuo

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/48 ,  H02J7/34

CPC classification number: H02J7/0024 ,  H02J7/0047 ,  H01M10/425 ,  H01M10/482 ,  H02J7/345 ,  H02J7/0029 ,  H01M2010/4271

Abstract: The battery includes a cell pack. The detection circuit includes a first switch unit, a second switch unit, a discharge unit, a sampling unit, an energy storage unit, and a controller. A first terminal of the first switch unit is connected to a first terminal of the cell pack. A second terminal of the first switch unit is connected to a second terminal of the cell pack after being connected in series to the energy storage unit. The second switch unit is connected in parallel to the energy storage unit after being connected in series to the discharge unit. The discharge unit discharges the energy storage unit. The sampling unit is connected in parallel to the energy storage unit. The sampling unit sends an obtained sampling signal to the controller.