公开(公告)号：US20210328454A1

公开(公告)日：2021-10-21

申请号：US17275559

申请日：2019-09-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jiheon LEE ,  Younggeun KIM ,  Heejung KIM ,  Ilhyung LIM

IPC: H02J9/06

Abstract: The present specification relates to a power supply device and a power supply system capable of supplying uninterruptible power, and to a power supply device and a power supply system, which comprise a breaker for controlling a connection in a power bus to which a plurality of power supply devices are connected, and thus the breaker is opened and closed according to various situations occurring in the system so as to control power demand and supply, and thus a UPS function can be performed between the plurality of power supply devices.