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    POWER UNIT AND SOLID-STATE TRANSFORMER
    301.
    发明公开
    POWER UNIT AND SOLID-STATE TRANSFORMER 审中-公开

    公开(公告)号：US20240186799A1

    公开(公告)日：2024-06-06

    申请号：US18428259

    申请日：2024-01-31

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Biao REN ,  Zhuyong HUANG

    IPC: H02J4/00

    CPC classification number: H02J4/00

    Abstract: A power unit and a solid-state transformer supply power to a control module in the power unit by using a first subsidiary power supply circuit and a second subsidiary power supply circuit and improve operation reliability of the power unit. The power unit may include the first subsidiary power supply circuit and a first power circuit. The first power circuit includes an alternating current/alternating current power main circuit and a first control module. The alternating current/alternating current power main circuit is coupled to a grid power supply system to supply power to the alternating current/alternating current power main circuit through the grid power supply system. An input end of the first subsidiary power supply circuit is coupled to a bus of the alternating current/alternating current power main circuit. An output end of the first subsidiary power supply circuit is coupled to the first control module.

    PHOTOVOLTAIC SYSTEM AND CONTROL METHOD
    302.
    发明公开
    PHOTOVOLTAIC SYSTEM AND CONTROL METHOD 审中-公开

    公开(公告)号：US20240186795A1

    公开(公告)日：2024-06-06

    申请号：US18441157

    申请日：2024-02-14

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Xiaofeng YAO ,  Guilei GU

    IPC: H02J3/38 ,  H02J3/00

    CPC classification number: H02J3/381 ,  H02J3/001 ,  H02J2300/26

    Abstract: The system includes a plurality of first converters, a second converter, an inverter, and a controller. The controller obtains a sum of input voltages of the plurality of first converters connected in series to each other; when the sum of the input voltages of the plurality of first converters is greater than a first voltage, adjusts the output voltage of the first converter, so that the sum of the input voltages of the first converters is less than or equal to the first voltage; and when the sum of the input voltages of the first converters is less than a second voltage, adjusts an output voltage of the second converter, so that the output voltage of the second converter is greater than or equal to the second voltage, and the first converters keep in a state of adjusting the input voltages based on power.

    Photovoltaic power generation system, photovoltaic inverter, and direct current combiner box
    303.
    发明授权
    Photovoltaic power generation system, photovoltaic inverter, and direct current combiner box 有权

    公开(公告)号：US12003096B2

    公开(公告)日：2024-06-04

    申请号：US17875823

    申请日：2022-07-28

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Xiufeng Zhang ,  Yanzhong Zhang

    IPC: H02H7/26 ,  H02J3/38 ,  H02S40/34

    CPC classification number: H02H7/268 ,  H02J3/381 ,  H02S40/34 ,  H02J2300/26

    Abstract: A photovoltaic power generation system includes a protection switch and a plurality of DC-DC converters. Each DC-DC converter includes a direct current bus, a DC-DC circuit, and at least one input interface. The input interface is configured to connect to a photovoltaic unit. The photovoltaic unit includes at least one photovoltaic module. The input interface is connected to the direct current bus by using the protection switch, the direct current bus is connected to an input end of the DC-DC circuit, and an output end of the DC-DC circuit is an output end of the DC-DC converter. The protection switch includes a release device and a switching device that are connected in series. The release device is configured to: when a short-circuit fault occurs on a line in which the release device is located, control the switching device to be disconnected.

    ROTOR, PERMANENT MAGNET MOTOR AND POWERTRAIN
    305.
    发明公开
    ROTOR, PERMANENT MAGNET MOTOR AND POWERTRAIN 审中-公开

    公开(公告)号：US20240154477A1

    公开(公告)日：2024-05-09

    申请号：US18501353

    申请日：2023-11-03

    Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

    Inventor： Yingqian LIN ,  Yu WANG ,  Yi SUN

    IPC: H02K1/276

    CPC classification number: H02K1/276

    Abstract: This application describes examples of a rotor, a permanent magnet motor and a powertrain. In one example, in a first rotor assembly of a rotor structure, each first rotor lamination is provided with a plurality of first permanent magnet slot groups, and a first boss is disposed at one end that is of each first permanent magnet slot of the first permanent magnet slot group and that is close to an outer edge of the first rotor lamination. In a second rotor assembly of the rotor structure, each second rotor lamination is provided with a plurality of second permanent magnet slot groups, and a second boss is disposed at one end that is of each second permanent magnet slot of the second permanent magnet slot group and that is close to an outer edge of the second rotor lamination.

    ELECTRONIC ASSEMBLY AND ELECTRONIC DEVICE
    306.
    发明公开
    ELECTRONIC ASSEMBLY AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20240138103A1

    公开(公告)日：2024-04-25

    申请号：US18491585

    申请日：2023-10-19

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Qiang Gao ,  Longhe Wei ,  Yongqi Qiu ,  Jihui Liu ,  Xinquan Huang

    IPC: H05K7/20 ,  H05K1/02

    CPC classification number: H05K7/20254 ,  H05K1/0203 ,  H05K7/20263 ,  H05K2201/064

    Abstract: An electronic assembly includes a circuit board assembly and a liquid cold plate. The circuit board assembly includes a board, a first heat-generating component, and a second heat-generating component, where the first heat-generating component and the second heat-generating component are disposed on the board. The liquid cold plate includes a liquid inlet and a liquid outlet. The liquid cold plate includes a first cooling region and a second cooling region, where the second cooling region is closer to the liquid outlet than the first cooling region. A heat dissipation capability of the first cooling region is stronger than that of the second cooling region. A heat-generating density of the first heat-generating component is greater than that of the second heat-generating component, the first heat-generating component is thermally connected to the first cooling region, and the second heat-generating component is thermally connected to the second cooling region.

    POWER DISTRIBUTION CIRCUIT OF UNINTERRUPTIBLE POWER SUPPLY AND POWER SUPPLY SYSTEM
    308.
    发明公开
    POWER DISTRIBUTION CIRCUIT OF UNINTERRUPTIBLE POWER SUPPLY AND POWER SUPPLY SYSTEM 审中-公开

    公开(公告)号：US20240136848A1

    公开(公告)日：2024-04-25

    申请号：US18490565

    申请日：2023-10-18

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Hejun Zhang ,  Peiguo Liu ,  Ziyi You ,  Maoyong Lu

    IPC: H02J9/06 ,  H02M3/335

    CPC classification number: H02J9/06 ,  H02M3/33569

    Abstract: A power distribution circuit of an uninterruptible power supply is provided, where a first port of the power distribution circuit of the uninterruptible power supply is electrically connected to a second port. A third port is electrically connected to the second port by using a compensation circuit. When an input voltage of the first port is less than a rated voltage of a load of the second port, an input voltage of the third port is input to the compensation circuit. The compensation circuit converts a direct current into an alternating current, so that the alternating current output by the compensation circuit and the input voltage of the first port jointly supply power to the load of the second port.

    ROTOR DISK AND MANUFACTURING METHOD THEREOF, ROTOR STRUCTURE, DISK MOTOR, AND ELECTRIC VEHICLE
    309.
    发明公开
    ROTOR DISK AND MANUFACTURING METHOD THEREOF, ROTOR STRUCTURE, DISK MOTOR, AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：US20240128814A1

    公开(公告)日：2024-04-18

    申请号：US18485062

    申请日：2023-10-11

    Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

    Inventor： Jining HOU ,  Chaojie SHI ,  Hua LAN

    IPC: H02K1/27 ,  H02K1/02 ,  H02K7/00

    CPC classification number: H02K1/27 ,  H02K1/02 ,  H02K7/006

    Abstract: This application describes examples of a rotor disk and a manufacturing method thereof, a rotor structure, a disk motor, and an electric vehicle. In one example, the rotor disk includes a rotor iron core. The rotor iron core is provided with a plurality of groups of accommodating cavities at intervals in a circumferential direction of the rotor iron core. Each group of accommodating cavities includes a first accommodating cavity and a second accommodating cavity. The first accommodating cavity and the second accommodating cavity are provided in a radial direction of the rotor iron core and are in communication with each other. The first accommodating cavity and the second accommodating cavity are configured to respectively accommodate a first unit portion and a second unit portion of a first magnet.

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