公开(公告)号：US20190267827A1

公开(公告)日：2019-08-29

申请号：US16411635

申请日：2019-05-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wentao HE ,  Kui ZHOU ,  Haoren SHAN

IPC: H02J7/02 ,  H02M1/42 ,  H02M3/158 ,  H02M7/12 ,  H02M7/48

Abstract: The present invention provides a charging and discharging apparatus, including an alternating current charging and discharging unit, a bidirectional alternating current/direct current conversion unit, a bidirectional direct current/direct current isolated conversion unit, and a first energy storage unit that are sequentially connected in series, and further including at least one switch unit, a direct current/direct current isolated conversion unit, and a second energy storage unit. A first end of each switch unit is connected to the bidirectional direct current/direct current isolated conversion unit, a second end of each switch unit is connected to a first end of the direct current/direct current isolated conversion unit, and a second end of the direct current/direct current isolated conversion unit is connected to the second energy storage unit.