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    Magnetic integrated device, power conversion circuit, charger, and electric vehicle
    1.
    发明授权
    Magnetic integrated device, power conversion circuit, charger, and electric vehicle 有权

    公开(公告)号：US11527354B2

    公开(公告)日：2022-12-13

    申请号：US17588202

    申请日：2022-01-28

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Yongtao Liang ,  Weiping Liu ,  Yanjun Zhi

    IPC: H01F27/38 ,  H02M1/00 ,  H01F27/34 ,  H02M3/28

    Abstract: This application provides a magnetic integrated device, a power conversion circuit, a charger, and an electric vehicle, and pertains to the field of power electronics technologies. The magnetic integrated device includes a magnetic core, a first transformer winding, and a second transformer winding, where the first transformer winding and the second transformer winding are separated and wound, and a first air gap is formed at separation. A magnetic line may pass through the first air gap to form leakage inductance, and the leakage inductance may be equivalent to resonant inductance in the power conversion circuit. Therefore, there is no need to separately dispose an inductor winding in the magnetic integrated device. This effectively reduces a volume and a weight of the magnetic integrated device. In addition, the power conversion circuit that uses the magnetic integrated device also has a relatively small volume and relatively high-power density.

    Power conversion module, vehicle-mounted charger, and electric vehicle
    2.
    发明授权
    Power conversion module, vehicle-mounted charger, and electric vehicle 有权

    公开(公告)号：US11532978B2

    公开(公告)日：2022-12-20

    申请号：US17139613

    申请日：2020-12-31

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Yongtao Liang ,  Weiping Liu ,  Feng Su

    IPC: B60L53/22 ,  H02M1/00 ,  H02M3/335 ,  H02M3/00

    Abstract: A power conversion module, a vehicle-mounted charger, and an electric vehicle may be used in the field of new energy vehicles. The power conversion module includes a power factor correction PFC module and a first direct current-direct current DC-DC converter. A first primary circuit of the first DC-DC converter has a first bridge arm, a second bridge arm, a third bridge arm, and a fourth bridge arm. A first switch is disposed between the first bridge arm and an inductor at an interface of the PFC module, and a second switch is disposed between the third bridge arm and another interface of the PFC module. When the first switch and the second switch are turned on, a secondary circuit of the first DC-DC converter may implement a function of a primary circuit of a second DC-DC converter; the second bridge arm and the fourth bridge arm may implement a function of a secondary circuit of the second DC-DC converter; and the first bridge arm, the third bridge arm, the inductor of the PFC module, and a capacitor of the PFC module may form an inverter module, so as to implement an inverse discharging function.

    MAGNETIC INTEGRATED DEVICE, POWER CONVERSION CIRCUIT, CHARGER, AND ELECTRIC VEHICLE
    3.
    发明申请
    MAGNETIC INTEGRATED DEVICE, POWER CONVERSION CIRCUIT, CHARGER, AND ELECTRIC VEHICLE 有权

    公开(公告)号：US20220157516A1

    公开(公告)日：2022-05-19

    申请号：US17588202

    申请日：2022-01-28

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Yongtao Liang ,  Weiping Liu ,  Yanjun Zhi

    IPC: H01F27/38 ,  H01F27/34 ,  H02M1/00

    Abstract: This application provides a magnetic integrated device, a power conversion circuit, a charger, and an electric vehicle, and pertains to the field of power electronics technologies. The magnetic integrated device includes a magnetic core, a first transformer winding, and a second transformer winding, where the first transformer winding and the second transformer winding are separated and wound, and a first air gap is formed at separation. A magnetic line may pass through the first air gap to form leakage inductance, and the leakage inductance may be equivalent to resonant inductance in the power conversion circuit. Therefore, there is no need to separately dispose an inductor winding in the magnetic integrated device. This effectively reduces a volume and a weight of the magnetic integrated device. In addition, the power conversion circuit that uses the magnetic integrated device also has a relatively small volume and relatively high-power density.

    Converter and power supply system with simplified sampling
    5.
    发明授权
    Converter and power supply system with simplified sampling 有权

    公开(公告)号：US11677328B2

    公开(公告)日：2023-06-13

    申请号：US17481076

    申请日：2021-09-21

    Applicant: Huawei Digital Power Technologies Co., Ltd.

    Inventor： Weiping Liu ,  Yongtao Liang ,  Chen Chen

    IPC: H02M7/219 ,  H02M7/5387 ,  H02M1/10

    CPC classification number: H02M7/219 ,  H02M1/10 ,  H02M7/5387

    Abstract: A converter and a power supply system are disclosed, and relate to the power electronics field, to resolve a problem that a sampling circuit in an OBC circuit is relatively complex. The converter includes an alternating current unit, a switching unit, a conversion unit, a direct current unit, and a controller. The alternating current unit includes a U line, a V line, a W line, and an N line. The N line is connected to a ground of the controller, so that the controller can be directly connected to the U line, the V line, and the W line, to collect a voltage of the U line, a voltage of the V line, and a voltage of the W line. This simplifies the sampling circuit.

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