公开(公告)号：US20240388141A1

公开(公告)日：2024-11-21

申请号：US18785320

申请日：2024-07-26

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Fralett Suarez Sandoval ,  Sarai Malinal Torres Delgado

IPC: H02J50/90 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80

Abstract: A transmitter device wirelessly powers at least one receiver device and comprises a power source for providing electric power; and a visualization unit; and at least one coil electrically connected to the power source. The at least one coil is configured to generate an electromagnetic powering field emanating from the at least one coil. The at least one coil is further configured to radiate the electromagnetic powering field towards a volumetric zone for powering at least one receiver device located in the volumetric zone. The visualization unit is configured to provide a visual representation of a characteristic of the electromagnetic powering field radiated towards the volumetric zone.

公开(公告)号：US12136889B2

公开(公告)日：2024-11-05

申请号：US18184091

申请日：2023-03-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhou Shu ,  Xiaofei Zhang ,  Peng Shuai

IPC: H02M7/23 ,  B60L53/12 ,  H02J1/00 ,  H02J1/10 ,  H02J7/00 ,  H02J7/02 ,  H02J50/10 ,  H02M3/00 ,  H02M3/158

Abstract: A power system, related to the field of electronic power. The power system includes a centralized controller and three power modules. Each phase of an alternating current power supply is connected to one power module, and an input end of each power module is connected to one phase of the alternating current power supply. Each power module includes a low voltage controller and at least two power units. Each power unit includes a unit controller. The centralized controller is connected to each low voltage controller by using a bus. The centralized controller sends a control signal to each unit controller by using each low voltage controller, to control the unit controller and/or a power conversion circuit. The power system can implement hot swap of the power module and improve on-site operation reliability.

公开(公告)号：US12136848B2

公开(公告)日：2024-11-05

申请号：US18152278

申请日：2023-01-10

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Baoguo Chen ,  Jianhua Zhu

IPC: H02J9/06 ,  H02J7/00 ,  H02M3/00

Abstract: The battery assembly includes a control unit and a DCDC converter. The control unit is configured to, when a first load is short-circuited in a process in which the battery assembly supplies power to the first load, control the DCDC converter to output a first current. The first current is greater than a maximum nominal discharge current of the battery assembly, is used to break an electrical connection between the first load and a busbar, and is less than a short-circuit protection current of the battery assembly; and/or the control unit is configured to, after a power supply encounters a power failure, control a discharge capability of the battery assembly to be greater than a maximum nominal discharge capability of the battery assembly, and supply power to a first load and a second load by using a DCDC converter.

公开(公告)号：US12136808B2

公开(公告)日：2024-11-05

申请号：US17701940

申请日：2022-03-23

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yongbing Gao ,  Chen Wang ,  Tiansan Lin ,  Yang Hu

IPC: H02H7/00 ,  H02H1/00 ,  H02H7/20 ,  H02J3/38

Abstract: A photovoltaic power generation system includes an inverter, a controller, and at least two direct current branch circuits. The leakage current detection apparatus is configured to: detect a leakage current of the direct current branch circuit on which the leakage current detection apparatus is located and send the leakage current to the controller. The controller is further configured to: when the photovoltaic power generation system runs and a value of a leakage current of the direct current branch circuit exceeds a preset range, determine that an insulation fault occurs on the direct current branch circuit. The system can determine the direct current branch circuit on which the insulation fault occurs in the photovoltaic power generation system, so that measures are taken in time for the direct current branch circuit on which the insulation fault occurs, to eliminate a potential safety hazard.

公开(公告)号：US20240364226A1

公开(公告)日：2024-10-31

申请号：US18765715

申请日：2024-07-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhengyan HE

IPC: H02M3/335 ,  H02J3/38 ,  H02M3/00

CPC classification number: H02M3/33573 ,  H02J3/38 ,  H02M3/015 ,  H02M3/33592 ,  H02J2300/24

Abstract: A direct current converter includes a full-bridge inverter, a control module, a transformer, a resonant circuit, and a rectifier module. The full-bridge inverter includes a first switching device, a second switching device, a third switching device, and a fourth switching device. The control module adjusts a duty cycle of the first switching device, the second switching device, the third switching device, or the fourth switching device to a first duty cycle. The control module further controls a working frequency of the direct current converter to be a first working frequency, where an absolute value of a difference between the first working frequency and a resonant frequency of the resonant circuit is less than or equal to a threshold.

公开(公告)号：US12124242B2

公开(公告)日：2024-10-22

申请号：US17994529

申请日：2022-11-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan Kong ,  Zhen Fang ,  Lihua Liu

IPC: G05B19/4155 ,  G01B7/30 ,  G01D5/20 ,  G01R31/34

CPC classification number: G05B19/4155 ,  G01B7/30 ,  G01D5/20 ,  G01R31/343 ,  G05B2219/41329

Abstract: A motor angle detection and diagnosis apparatus is connected to a drive motor using a resolver. The resolver is configured to output a resolver feedback signal of an electrical angle of the drive motor. An angle sampling and diagnosis system in the motor angle detection and diagnosis apparatus performs two-channel simultaneous sampling on a resolver feedback signal, obtained after adjustment by the resolver feedback processing circuit, separately calculates a first electrical angle and a second electrical angle; diagnoses data obtained after the two-channel sampling of the first electrical angle and the second electrical angle in real time, diagnoses hardware circuits, and controls the motor controller to enter a safe state when a diagnosis result is abnormal. In this solution, sampling is performed by using two sampling channels, so that angle decoding of at least an ASIL C can be implemented.

公开(公告)号：US20240349447A1

公开(公告)日：2024-10-17

申请号：US18748429

申请日：2024-06-20

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jinliang SONG ,  Wei CHEN

IPC: H05K7/20

CPC classification number: H05K7/20263 ,  H05K7/20272 ,  H05K7/20781

Abstract: A cooling system, a cabinet, and a data center. The cooling system is applied to the cabinet and includes a water-cooled heat exchanger, a film cooler, a circulating pump, and a water refill apparatus. The water-cooled heat exchanger is located at an air inlet of the cabinet and is configured to perform heat exchange and cooling on air at the air inlet. The film cooler is located at an air outlet of the cabinet and is configured to perform heat exchange and cooling on air at the air outlet. The water-cooled heat exchanger is provided with a first water inlet and a first water outlet, the film cooler is provided with a second water inlet and a second water outlet, the first water inlet communicates with the second water outlet, the first water outlet communicates with the second water inlet.

公开(公告)号：US20240347613A1

公开(公告)日：2024-10-17

申请号：US18642385

申请日：2024-04-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Kimimori HAMADA ,  Fei HU

IPC: H01L29/423 ,  H01L21/02 ,  H01L21/8234 ,  H01L29/66 ,  H01L29/78 ,  H01L29/786

CPC classification number: H01L29/4236 ,  H01L21/02293 ,  H01L21/823418 ,  H01L29/66712 ,  H01L29/7813 ,  H01L29/78696

Abstract: A semiconductor device includes an N-type semiconductor substrate, an epitaxial layer, a trench structure, a gate, an interlayer dielectric layer, a source, and a drain. The trench structure is disposed at the epitaxial layer. The trench structure includes a plurality of first trenches and one second trench. The plurality of first trenches extend in a first direction and are arranged at intervals in a second direction. The second trench extends in the second direction. The second trench and each of the plurality of first trenches are disposed in a cross manner and communicate with each other. The interlayer dielectric layer covers the gate, and has a contact hole that extends in the second direction. The source is disposed at the interlayer dielectric layer, and is in contact, through the contact hole, with the epitaxial layer.

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：US20240339880A1

公开(公告)日：2024-10-10

申请号：US18626626

申请日：2024-04-04

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hiroshi TANGE ,  Weihua HUANG ,  Qi CONG

IPC: H02K3/12 ,  H02K1/02 ,  H02K1/16 ,  H02K3/34

CPC classification number: H02K3/12 ,  H02K1/02 ,  H02K1/16 ,  H02K3/345

Abstract: An annular silicon steel sheet, a circular wire motor assembly, a circular wire motor, and a powertrain. The annular silicon steel sheet includes a plurality of open slots, each open slot penetrates the silicon steel sheet in an axial direction of the silicon steel sheet, and a projection of each open slot in the axial direction of the silicon steel sheet includes a first curve segment, a second curve segment, and a third curve segment. The first curve segment and the third curve segment are oppositely arranged in a circumferential direction of the silicon steel sheet, a bending direction of the first curve segment is away from a bending direction of the third curve segment, and a bending direction of the second curve segment is away from an opening of the open slot. The open slots improve the performance of the circular wire motor and the powertrain.