公开(公告)号：US11476751B2

公开(公告)日：2022-10-18

申请号：US17152747

申请日：2021-01-19

Applicant: Delta Electronics (Shanghai) Co., Ltd.

Inventor： Yuhu Zhou ,  Haidong Chen ,  Guoqiao Shen ,  Jinfa Zhang

IPC: H02M1/32 ,  H02M3/158 ,  H01H71/12 ,  H02H3/087 ,  H02M3/07 ,  H02M1/00

Abstract: The present invention discloses a flying capacitor converter, a short circuit current suppression circuit for the same and an energy storage system. The flying capacitor converter comprises a controller, and has a high voltage side connected to a first power source and a low voltage side connected to a second power source. The short circuit current suppression circuit comprises: at least one current detection unit connected to the low voltage side and/or the high voltage side of the flying capacitor converter; and at least one switch set connected in series to the high voltage side and/or the low voltage side of the flying capacitor converter, wherein the controller controls the switch set to cut off a connection between the flying capacitor converter and the first power source and/or between the flying capacitor converter and the second power source, when the current detection unit detects a short circuit.

公开(公告)号：US20240186791A1

公开(公告)日：2024-06-06

申请号：US18523788

申请日：2023-11-29

Applicant: Delta Electronics (Shanghai) Co., Ltd.

Inventor： Haidong Chen ,  Yafeng Wang ,  Yansong Lu ,  Linfeng Zhong ,  Changyong Wang

IPC: H02J3/12 ,  H01M10/44 ,  H01M10/46 ,  H01M50/204 ,  H01M50/296 ,  H02J7/00 ,  H02M1/00 ,  H02M3/335

CPC classification number: H02J3/12 ,  H01M10/441 ,  H01M10/46 ,  H01M50/204 ,  H01M50/296 ,  H02J7/0013 ,  H02J7/0047 ,  H02M1/0067 ,  H02M3/33584 ,  H02J2207/20

Abstract: An energy storage system includes a DC bus, an energy storage converter, n first battery racks and m energy storage units. The DC bus has a positive bus and a negative bus. The energy storage converter is electrically connected to the DC bus. Each of the n first battery racks is electrically connected between the positive bus and the negative bus directly. Each of the m energy storage units includes a second battery rack and a DC/DC converter. The DC/DC converter is electrically connected between the corresponding second battery rack and the DC bus. The DC/DC converter performs electric energy conversion between the corresponding second battery rack and the DC bus.