公开(公告)号：US20240342528A1

公开(公告)日：2024-10-17

申请号：US18755120

申请日：2024-06-26

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Zhipeng WU ,  Shijiang YU

IPC: A62C37/40 ,  A62C3/16 ,  H01M50/251 ,  H01M50/383

CPC classification number: A62C37/40 ,  A62C3/16 ,  H01M50/251 ,  H01M50/383 ,  H01M2220/10

Abstract: Embodiments of this disclosure provide an energy storage system and a control method thereof. The energy storage system includes: a cabinet; an energy storage device, a first sensing apparatus, and configured to sense a concentration of flammable gas in the cabinet; a ventilation apparatus, disposed on the cabinet, where the ventilation apparatus is configured to exhaust the flammable gas from the cabinet; and a controller, communicatively coupled to the first sensing apparatus and the ventilation apparatus, and configured to: receive first sensing information indicating the concentration of the flammable gas from the first sensing apparatus, and generate, based on the first sensing information, a signal for controlling the ventilation apparatus.

公开(公告)号：US20230361382A1

公开(公告)日：2023-11-09

申请号：US18356410

申请日：2023-07-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhipeng WU ,  Xiaopeng RAN ,  Shijiang YU

IPC: H01M10/6565 ,  H01M10/63 ,  H01M10/6564 ,  H01M10/48

CPC classification number: H01M10/6565 ,  H01M10/63 ,  H01M10/6564 ,  H01M10/486 ,  H01M10/613

Abstract: The energy storage container includes a container controller, a plurality of battery clusters, and a plurality of air conditioners. The plurality of air conditioners is evenly distributed in at least one of a door or a side wall of the energy storage container. Each battery cluster includes a plurality of battery modules connected in series. Each battery cluster has a corresponding air conditioner. The container controller jointly controls the plurality of air conditioners to adjust internal temperature of the energy storage container. The air conditioners in the energy storage container are disposed in an evenly distributed manner rather than a conventional centralized manner. In addition, the air conditioners are disposed in a correspondence with the battery clusters, so that the battery clusters can be effectively cooled. This ensures consistency between capacities of the battery clusters as far as possible, ensures operation safety of the battery clusters.

公开(公告)号：US20230420948A1

公开(公告)日：2023-12-28

申请号：US18465716

申请日：2023-09-12

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Chunlei ZHANG ,  Shijiang YU ,  Zhipeng WU

IPC: H02J3/32 ,  H02J3/00 ,  H02J7/00

CPC classification number: H02J3/32 ,  H02J3/001 ,  H02J7/0014 ,  H02J7/007182 ,  H02J2207/20

Abstract: This application describes an energy storage system including an energy storage module, a direct current bus, a power conversion module, a first power supply module, a second power supply module, and a battery management system. In some implementations, the first power supply module is configured to: select a larger voltage between an output direct current voltage of the energy storage module and a bus voltage of the direct current bus as an input voltage, and output a first direct current voltage. The first power conversion module is configured to: convert the alternating current mains or an output alternating current voltage of the power conversion module into a second direct current voltage. The second power supply module is configured to: select a larger voltage between the first direct current voltage and the second direct current voltage as a target voltage, and supply power to the battery management system based on the target voltage.

公开(公告)号：US20220329082A1

公开(公告)日：2022-10-13

申请号：US17719130

申请日：2022-04-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianshan LI ,  He ZHOU ,  Shijiang YU ,  Zhipeng WU

IPC: H02J7/00

Abstract: An energy storage system and a method for controlling an the energy storage system, includes a plurality of energy storage units. The energy storage unit includes a plurality of battery cells, a plurality of balancing units, a voltage conversion unit, a first switch, a second switch, and a control unit. The control unit is configured to detect fault cases of the plurality of battery cells, and control open and closed states of the first switch and the second switch. According to the application, it can be ensured that each energy storage unit in the energy storage system can continuously work when a battery cell is faulty and when state of charge balance between battery cells is implemented, thereby greatly improving reliability of the energy storage system with low costs.

公开(公告)号：US20220326294A1

公开(公告)日：2022-10-13

申请号：US17707436

申请日：2022-03-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhong WANG ,  Shengjie ZHANG ,  Jianshan LI ,  YU PENG ,  Shijiang YU ,  He ZHOU ,  Bo YU

IPC: G01R31/14 ,  H02J3/38 ,  G01R31/52

Abstract: A photovoltaic energy system and a method for detecting a ground insulation impedance, improve accuracy of detecting a ground insulation impedance after one or more conversion circuits are connected in parallel. The photovoltaic energy system includes one or more conversion circuits and a detection circuit. The detection circuit includes an alternating current signal source and a sampling resistor that are connected in series, a first sampling circuit, and a control circuit. The control circuit is configured to control the alternating current signal source to output harmonic signals of a first frequency and a second frequency. The first sampling circuit is configured to: when the alternating current signal source outputs the harmonic signal of the first frequency, collect a voltage at both terminals of the sampling resistor to obtain a first voltage.

公开(公告)号：US20220311252A1

公开(公告)日：2022-09-29

申请号：US17704893

申请日：2022-03-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhenghua ZOU ,  Yuxiang LI ,  Zhipeng WU ,  Shijiang YU

IPC: H02J7/00

Abstract: A battery management system is provided in this application, which includes a monitoring module and a sampling module. The sampling module performs sampling on an operating parameter of a direct current converter to obtain target sampling information, and sends the target sampling information to the monitoring module. The monitoring module receives the target sampling information sent by the sampling module, and sends the target sampling information to a central monitoring unit, so that the central monitoring unit determines target charge power for charging an energy storage battery by a power conversion system PCS; and receives a first control instruction sent by the central monitoring unit, and controls the direct current converter to adjust charge power for charging the energy storage battery by the power conversion system PCS to the target charge power.