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公开(公告)号：US20250069802A1
公开(公告)日：2025-02-27
申请号：US18944814
申请日：2024-11-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Fralett Suarez Sandoval , Sarai Malinal Torres Delgado
Abstract: An inductor arrangement for generating or receiving an electromagnetic field, the inductor arrangement comprising: a flat coil-shaped multi-layer substrate comprising a first conductive layer and a second conductive layer which are separated by an insulating layer, the flat coil-shaped multi-layer substrate being structured to form a planar inductor; and a third conductive layer and a fourth conductive layer deposited on the insulating layer at edges of the structured flat coil-shaped multi-layer substrate, wherein the first conductive layer, the second conductive layer, the third conductive layer and the fourth conductive layer are structured to form a tubular conductive layer, the tubular conductive layer enclosing the flat coil-shaped multi-layer substrate.
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公开(公告)号：US20250055327A1
公开(公告)日：2025-02-13
申请号：US18924722
申请日：2024-10-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuechao LI , Chao WANG , Baoshan WU , Changyuan LI
Abstract: A wireless charging module, an electronic device, and a charger. The wireless charging module includes a charging coil and a magnetic attachment apparatus. A magnetic attachment apparatus includes a plurality of magnetic attachment units where each one includes a first and a second assembly, and the first and the second assembly are disposed on a same surface in a first direction. The first assembly includes a plurality of magnets those magnetic field directions of which are parallel and opposite to each other, so that lateral magnetic fields cancel each other out, to weaken a magnetic field radiated around or to an inside by the magnetic attachment apparatus. Therefore, a soft magnetic material can be omitted or reduced. An enhancement in magnetic field strength on a side of the magnetic attachment apparatus leads to better limit a location of contact between the electronic device and the charger.
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公开(公告)号：US12225687B2
公开(公告)日：2025-02-11
申请号：US17969201
申请日：2022-10-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuan Liu , Dangen Nie , Peiguo Liu
Abstract: A cooling capacity distribution unit includes a liquid-cooled circulating pump disposed in a cabinet, and a frequency converter that supplies power to the liquid-cooled circulating pump. The frequency converter includes an AC-DC module and a DC-AC module. The AC-DC module is configured to be connected to mains, and the DC-AC module is connected to the liquid-cooled circulating pump. The cooling capacity distribution unit further includes a power supply unit, where the power supply unit includes a backup battery disposed in the cabinet, and a DC-DC module connected to the backup battery. The DC-DC module is connected to the DC-AC module and is configured to supply power to the liquid-cooled circulating pump.
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公开(公告)号：US12224620B2
公开(公告)日：2025-02-11
申请号：US17570662
申请日：2022-01-07
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Chuntao Zhang
Abstract: Embodiments of this application provide a power supply circuit, including a first power conversion module, a plurality of battery banks, a first bus, and a second bus. A first wiring terminal of the first power conversion module is connected to the battery bank, a second wiring terminal of the first power conversion module is connected to the first bus and the second bus, and the first power conversion module is configured to: perform direct current to direct current (DC/DC) conversion on a current output by a corresponding battery bank, and output currents to the first bus and the second bus. In this application, a quantity of battery banks are set to be less than a quantity of inverters in a UPS system, so that costs are reduced.
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公开(公告)号：US20250047208A1
公开(公告)日：2025-02-06
申请号：US18783772
申请日：2024-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Ye HE , Rongsen ZHENG , Shangrong LAN
Abstract: A power conversion apparatus may include a direct current-direct current conversion circuit and a controller. The direct current-direct current (DC-DC) conversion circuit may include a full-bridge circuit, the full-bridge circuit includes a first bridge arm and a second bridge arm that are connected in parallel, and each of the bridge arms includes an upper bridge arm switch and a lower bridge arm switch that are connected in series. The controller controls turn-on/off of the upper bridge arm switch and the lower bridge arm switch of each of the bridge arms based on a voltage of a first connection point between the upper bridge arm switch and the lower bridge arm switch in the first bridge arm and a voltage of a second connection point between the upper bridge arm switch and the lower bridge arm switch in the second bridge arm.
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Patent Agency Ranking
公开(公告)号：US20250042306A1
公开(公告)日：2025-02-06
申请号：US18780790
申请日：2024-07-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yankun XU , Sen Cao , Yang Cheng
IPC: B60L58/27 , B60L15/20 , H01M10/615 , H01M10/625 , H01M10/637
Abstract: A method for pulse heating a power battery of an electric vehicle and an electric vehicle. A powertrain includes a first power circuit and a second power circuit. The method is used to control the second power circuit or a motor power circuit to generate a pulse alternating current on a direct current bus, and the pulse alternating current is used to heat the power battery. A phase value of a pulse alternating current output by at least one of the first power circuit and the second power circuit is adjusted, to reduce a phase difference between a pulse alternating current generated by the first power circuit and a pulse alternating current generated by the second power circuit, thereby improving heating efficiency of the power battery.
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公开(公告)号：US20250042263A1
公开(公告)日：2025-02-06
申请号：US18793104
申请日：2024-08-02
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Lizhou Yang , Wenda Li , Jie Tang
Abstract: This application provides a motor controller for an electric vehicle. The motor controller includes a control circuit and an inverter circuit. The control circuit is configured to: in response to that the drive motor rotates with a pair of wheels of the electric vehicle, control a switch module to connect a center tap of the multiphase winding to the other end of the power battery, and control the inverter circuit to adjust a voltage at both ends of the bus capacitor. The bridge arms of the inverter circuit of the motor controller provided in this application and the winding of the drive motor form a voltage conversion circuit to adjust the voltage at both ends of the bus capacitor, to improve power performance and vehicle endurance of the electric vehicle.
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公开(公告)号：US12218608B2
公开(公告)日：2025-02-04
申请号：US17685702
申请日：2022-03-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Liming Ye , Heping Dai , Ning Wang , Gang Ye
Abstract: A method includes detecting a voltage signal of a three-level power converter, the voltage signal indicative of a capacitor voltage balancing in the three-level power converter, and dynamically adjusting an operating variable to adjust the voltage signal until the capacitor voltage balancing in the three-level power converter satisfies a criteria.
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公开(公告)号：US20250038284A1
公开(公告)日：2025-01-30
申请号：US18783760
申请日：2024-07-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Gongde CHEN , Baoguo Chen , Ye He
IPC: H01M10/48 , H01M10/0525 , H01M10/42
Abstract: An energy storage system includes an electrochemical cell pack, a startup circuit, and an auxiliary source circuit. The startup circuit includes a first control circuit and a second control circuit, the second control circuit includes a first voltage divider circuit and a second voltage divider circuit that are connected in series, the first voltage divider circuit includes a switching device and a voltage divider that are connected in series, and a connection point between the first voltage divider circuit and the second voltage divider circuit is connected to a first control end of the first control circuit. When the switching device is turned on, a voltage of the electrochemical cell pack needs to meet a specified condition, and the first control circuit turns on a line between the electrochemical cell pack and the auxiliary source circuit, to enable the battery pack to supply power to the auxiliary source circuit.
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公开(公告)号：US12212266B2
公开(公告)日：2025-01-28
申请号：US17858812
申请日：2022-07-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Jiyang Li , Wen Ye
Abstract: A powertrain, a coolant flow rate estimation method, and an electric vehicle are provided. Coolant in a first cooling loop of the powertrain is configured to cool an inverter. An electronic pump drives the coolant to circulate in the first cooling loop. When a phase current of a motor is greater than or equal to a preset current value, a controller determines a rotation speed of the electronic pump at a first moment as a first rotation speed, and determines a coolant flow rate at the first moment based on a temperature at a first position in the first cooling loop, a temperature at a second position in the inverter, and a power loss of the inverter. In the solution of this application, data does not need to be separately calibrated for different thermal management systems. This reduces time consumed by data calibration and improves practicability.
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