公开(公告)号：US20240088697A1

公开(公告)日：2024-03-14

申请号：US18505505

申请日：2023-11-09

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： He Zhou ,  Zhigang Wang ,  Zhipeng Wu

IPC: H02J7/00

CPC classification number: H02J7/00712 ,  H02J7/0014 ,  H02J7/0031 ,  H02J7/005 ,  H02J7/0063 ,  H02J2207/20

Abstract: A battery system comprises a first busbar, at least one battery rack, and a control circuit are included. The battery rack includes a plurality of battery units. Each battery unit includes a battery module, a connection switch K1, and an isolation switch K2. The connection switch K1 is connected in series to the battery module to form a first branch, and the isolation switch K2 is connected in parallel to the first branch. The control circuit is connected to control ends of the connection switch K1 and the isolation switch K2, and is configured to: control, based on a first voltage required by the load, connection switches K1 and isolation switches K2 of N battery units in the battery rack, to make an output voltage of the first busbar meet the first voltage required by the load.

公开(公告)号：US20240014677A1

公开(公告)日：2024-01-11

申请号：US18471789

申请日：2023-09-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhipeng Wu ,  Yang Hu ,  He Zhou ,  Shijiang Yu

IPC: H02J7/00

CPC classification number: H02J7/0069 ,  H02J7/0013 ,  H02J7/0048 ,  H02J7/00712 ,  H02J2207/20

Abstract: A method for controlling an energy storage system includes: determining that a first battery cluster in a plurality of battery clusters needs to be calibrated; and controlling, based on a state of charge SOC of the first battery cluster and a current charging or discharging state of the energy storage system, the first battery cluster to be charged or discharged or to be in a standby state, so that the first battery cluster satisfies a SOC calibration condition. In the method, charging, discharging, or standby-state control needs to be performed on only one battery cluster that needs to be calibrated in the energy storage system, independent decoupling management is implemented on the battery cluster, and normal running of the energy storage system is not affected. This enables the battery cluster to quickly satisfy the SOC calibration condition and can improve SOC accuracy of the energy storage system.

公开(公告)号：US20230402863A1

公开(公告)日：2023-12-14

申请号：US18455149

申请日：2023-08-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Lin Li ,  Zhiwu Xu ,  He Zhou

IPC: H02J7/00

CPC classification number: H02J7/0049 ,  H02J7/007182 ,  H02J7/0019 ,  H02J2300/24

Abstract: An energy system mainly includes a charging and discharging control apparatus and an energy storage battery. When a battery level is not greater than a discharging level threshold and a charging current of the energy storage battery is less than a charging current threshold, the charging and discharging control apparatus may control the energy storage battery to stop charging and discharging. When the battery level is not less than a charging level threshold and a discharging current of the energy storage battery is less than a discharging current threshold, the charging and discharging control apparatus may also control the energy storage battery to stop charging and discharging.

公开(公告)号：US20230076934A1

公开(公告)日：2023-03-09

申请号：US17940402

申请日：2022-09-08

Applicant: Huawei Digital Power Technologies Co, Ltd.

Inventor： Lin Li ,  He Zhou ,  Haibin Guo

IPC: G01R31/387 ,  G01R31/374 ,  H02J7/00

Abstract: An energy storage system includes a control apparatus and one or more battery sub-arrays. Each battery sub-array includes one or more energy storage racks. Each energy storage rack includes one or more battery packs. The control apparatus is configured to: determine that parameter calibration needs to be performed on a first energy storage rack in a first battery sub-array; when the first energy storage rack meets a preset condition, increase a weight of the first energy storage rack in the first battery sub-array; and after each battery pack in the first energy storage rack is fully charged or remaining power of the battery pack is fully discharged, perform calibration on a parameter of the battery pack.