公开(公告)号：US20230139265A1

公开(公告)日：2023-05-04

申请号：US17940762

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hui CHEN ,  Yanhui FU ,  Le CHU ,  Maobo GUO

IPC: H02J7/00 ,  H02H9/04

Abstract: A discharge circuit includes a first branch configured to be connected to a protected unit and a second branch connected in parallel to the first branch. The first branch includes a first overvoltage protection device configured to passively discharge a surge voltage. The second branch includes a second overvoltage protection device and a control switch connected in series. The control switch is configured to be connected to a control unit, and to be opened or closed based on a control signal of the control unit.