-
公开(公告)号：US11588397B2
公开(公告)日：2023-02-21
申请号：US16899361
申请日：2020-06-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Huibin Zhu , Heping Dai , Liming Ye , Yongtao Liang , Weiping Liu
Abstract: A power conversion system includes a first power conversion port including a three-level power factor correction device and a primary power conversion circuit, a second power conversion port including a three-level rectifier and a third power conversion port including a rectifier, the first power conversion port, the second power conversion port and the third power conversion port magnetically coupled to each other through a transformer.
-
公开(公告)号：US20220345046A1
公开(公告)日：2022-10-27
申请号：US17847516
申请日：2022-06-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Tianyu Wang , Weiping Liu
Abstract: A power converter includes a primary side circuit, a secondary side circuit, a transformer, and a controller. A primary side of the transformer is connected to the primary side circuit, and a secondary side of the transformer is connected to the secondary side circuit. The primary side circuit includes a resonant circuit. The secondary side circuit is configured to supply electric energy to the transformer. The transformer is configured to supply the electric energy to the primary side circuit. The primary side circuit is configured to convert the electric energy. The controller is connected to the secondary side circuit, and is configured to control, in a control cycle, the secondary side circuit to supply the electric energy to the transformer. Duration of the control cycle is greater than or equal to duration of a resonance cycle of the resonant circuit.
-
公开(公告)号：US20230179011A1
公开(公告)日：2023-06-08
申请号：US18161252
申请日：2023-01-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Tao Liang , Weiping Liu , Ren Liu , Dong Li
CPC classification number: H02J7/345 , H02M1/32 , H02M1/36 , H02J7/0013 , H02J2207/20 , H02J2207/50 , B60L2210/10 , B60L3/04
Abstract: Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor.
-
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
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.
-
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
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.
-
Patent Agency Ranking
公开(公告)号：US11820244B2
公开(公告)日：2023-11-21
申请号：US17710691
申请日：2022-03-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhaoxue Cui , Wei Zhang , Weiping Liu
CPC classification number: B60L53/22 , B60L53/24 , B60L2210/10 , B60L2210/20 , B60L2210/30
Abstract: Embodiments of this application provide an energy conversion apparatus, a power system, and a vehicle. The energy conversion apparatus includes a first switch group, a second switch group, a third switch group, a three-phase converter, a motor coil, a bridge arm circuit, and a three-port converter. The energy conversion apparatus is integrated with functions of alternating-current charging, motor driving, and direct-current charging, and can be installed on an electric vehicle to improve vehicle integration, thereby simplifying a structural layout of the electric vehicle, and reducing costs and a volume of the electric vehicle.
-
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
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.
-
公开(公告)号：US20250167540A1
公开(公告)日：2025-05-22
申请号：US19023153
申请日：2025-01-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yang Yan , Luo Li , Weiping Liu , Gun Yang
Abstract: A photovoltaic inverter system includes a lightning protection apparatus, a plurality of DC/DC conversion circuits, and an inverter circuit. Each DC/DC conversion circuit is connected to a component. The plurality of DC/DC conversion circuits are connected in parallel and then connected to the inverter circuit. The lightning protection apparatus includes a gas lightning protection unit and a first lightning protection unit. The gas lightning protection unit is separately connected to a first terminal of the component and a first terminal of another component. The first lightning protection unit is connected between the first terminal of the component and a grounding terminal. The gas lightning protection unit is configured to transmit, to the first lightning protection unit, a first current, namely a current introduced by any terminal of the another component. The first lightning protection unit is configured to transmit the first current and/or a second current to the grounding terminal.
-
公开(公告)号：US12244170B2
公开(公告)日：2025-03-04
申请号：US18161252
申请日：2023-01-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Tao Liang , Weiping Liu , Ren Liu , Dong Li
Abstract: Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor.
-
公开(公告)号：US12051966B2
公开(公告)日：2024-07-30
申请号：US17710676
申请日：2022-03-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Chen Chen , Bin Ma , Weiping Liu , Zhaoxue Cui
Abstract: A converter for avoiding a short-circuit fault of the converter while inhibiting a surge impact includes: a power factor correction (PFC) circuit, a surge protection circuit, and a switch circuit. The PFC circuit is configured to: convert a first component of a first alternating current received by an alternating current terminal of the PFC circuit into a first direct current, and output the first direct current through a direct current terminal of the PFC circuit; and convert a second direct current received by the direct current terminal of the PFC circuit into a second alternating current, and output the second alternating current through the alternating current terminal of the PFC circuit.
-
-
-
-
-
-
-
-
-
Search Results
15
records
(took 0.017 seconds)
