-
公开(公告)号：US20250167717A1
公开(公告)日：2025-05-22
申请号：US19030039
申请日：2025-01-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: H02P29/024
Abstract: This application provides a motor controller, a drive circuit, a power device. The motor controller includes a bridge arm circuit and a drive circuit. The bridge arm circuit includes a plurality of switching transistor bridge arms. The drive circuit is configured to provide a plurality of drive voltages to a plurality of switching transistors of the bridge arm circuit respectively. The drive circuit includes a plurality of transformers, a primary-side switch, and a control unit. A primary-side winding of each transformer includes a primary-side primary winding and a primary-side feedback winding. A secondary-side winding of each transformer is configured to output one drive voltage. One end of each primary-side primary winding is configured to connect to a power supply. The other end of each primary-side primary winding is connected to an end of the primary-side switching transistor. The motor controller reduces structural complexity of the drive circuit.
-
公开(公告)号：US20250167681A1
公开(公告)日：2025-05-22
申请号：US19032051
申请日：2025-01-18
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhaohui Wang , Lei Shi , Yongbing Gao
Abstract: A power conversion apparatus, wherein two bus capacitors are connected in series between a direct current bus, and the direct current bus is connected to a first output end and a second output end of the power conversion apparatus. An input end of a first direct current conversion circuit is connected to a first group of first input ends, and an output end of a first direct current conversion circuit is connected to two ends of a first bus capacitor. An input end of a second direct current conversion circuit is connected to a second group of second input ends, and an output end of the second direct current conversion circuit is connected to two ends of a second bus capacitor. A first group of second input ends are connected to the direct current bus, and a second group of first input ends are connected to the direct current bus.
-
公开(公告)号：US20250167634A1
公开(公告)日：2025-05-22
申请号：US19027826
申请日：2025-01-17
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Luyi Yang , Shuai Ma , Chuanyang Li , Gongchuan Xia
Abstract: A motor for oil anti-leakage includes a motor housing and a motor stator. The motor housing includes a motor accommodating cavity which penetrates the motor housing along an axial direction of the motor. The motor accommodating cavity is configured to fasten the motor stator, and the motor accommodating cavity includes a stator cavity and an end cavity. The stator cavity and the end cavity are arranged adjacent to each other. An inner wall of the end cavity is a rough surface, and an inner wall of the stator cavity is a machined surface.
-
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：US20250153559A1
公开(公告)日：2025-05-15
申请号：US19025876
申请日：2025-01-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shaobo Yang , Quanming Li , Heng Wang
Abstract: This disclosure provides a powertrain and a mechanical device. The powertrain includes a heat exchanger, an electronic assembly, and a motor. The electronic assembly includes a first housing, the motor includes a second housing, the first housing is fastened to the second housing, and the heat exchanger is also fastened to the first housing, so that both the heat exchanger and the electronic assembly and both the electronic assembly and the motor are fastened as a whole. The electronic assembly includes an electronic component, and the electronic component is disposed in an accommodation cavity of the first housing. The heat exchanger includes a first flow channel, and the first flow channel is configured to transmit a cooling working medium. This embodiment can improve integration of the powertrain and heat dissipation effect of the powertrain.
-
Patent Agency Ranking
公开(公告)号：US12301100B2
公开(公告)日：2025-05-13
申请号：US18168515
申请日：2023-02-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ken Chin , Yuanjun Liu , Zhixiang Hu
Abstract: A power factor correction (PFC) circuit includes an alternating current input circuit, a totem-pole PFC circuit, an input sampling circuit, an output sampling circuit, and a PFC control protection circuit. A first output terminal of the alternating current input circuit is respectively connected to a first input terminal of the totem-pole PFC circuit and a first input terminal of the input sampling circuit.
-
公开(公告)号：US20250150010A1
公开(公告)日：2025-05-08
申请号：US18934504
申请日：2024-11-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Sen CAO , Hongyong LI , Yankun XU
IPC: H02P21/16 , B60L58/27 , H01M10/615 , H01M10/625 , H01M10/637 , H02P21/22
Abstract: A motor controller for pulse heating of a power battery. The motor controller includes an inverter circuit, the inverter circuit includes three switching transistor bridge arms, two ends of each switching transistor bridge arm are respectively configured to connect to positive and negative electrodes of the power battery through a direct current bus, and bridge arm midpoints of the three switching transistor bridge arms are separately configured to connect to a three-phase winding of a motor. The bridge arm midpoints of the three switching transistor bridge arms are configured to output a three-phase current, the three-phase current is used to generate a pulse alternating current on the direct current bus, and the pulse alternating current is used to heat the power battery. A current of each phase of the three-phase current is a unipolar triangular wave, and a sum of the three-phase current is zero.
-
公开(公告)号：US20250149234A1
公开(公告)日：2025-05-08
申请号：US19014345
申请日：2025-01-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jinkun LIANG , Yanjun ZHI , Zhou ZHENG , Xiaoqing HU , Xiaming JING
Abstract: A integrated inductor includes a first magnetic core, at least two second magnetic cores, and at least two windings. The first magnetic core includes a first surface and a second surface that are opposite to each other in a first direction. The second magnetic cores are disposed in the first direction on a side that is of the first surface and that is away from the second surface. The winding is wound around the first magnetic core and the second magnetic core. The second magnetic core includes a first part and a second part. Along the first direction and on a side that is of the first surface and that is opposite to the second surface, the first part is located between the winding and the first surface, and the second part is located on side that is of the winding and that is away from the first surface.
-
公开(公告)号：US20250141345A1
公开(公告)日：2025-05-01
申请号：US19009701
申请日：2025-01-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yao Chang , Jianrui Xue
IPC: H02M1/32 , B60L8/00 , G01K7/01 , H02M7/00 , H02M7/5387
Abstract: A power module includes a first power semiconductor chip, a first temperature sensor, a first diode chip, and a first circuit board. The first power semiconductor chip includes a first output electrode. The first temperature sensor is located inside the first power semiconductor chip, a first cathode of the first temperature sensor is electrically connected to the first output electrode. The first diode chip is electrically connected to the first power semiconductor chip, and a voltage is generated between the first output electrode and the first cathode when the first diode chip generates a reverse recovery current. The first circuit board is configured to obtain a first voltage difference between the first output electrode and the first cathode, to obtain a temperature of the first diode chip. The power module in this application can accurately and quickly detect temperatures of the first power semiconductor chip and the first diode chip.
-
公开(公告)号：US20250118956A1
公开(公告)日：2025-04-10
申请号：US18982866
申请日：2024-12-16
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiufeng Zhang , Yanzhong Zhang
Abstract: A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic inverter is faulty.
-
-
-
-
-
-
-
-
-
Search Results
1139
records
(took 0.044 seconds)
