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61.发明公开公开(公告)号：US20240322609A1
公开(公告)日：2024-09-26
申请号：US18735556
申请日：2024-06-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Haijun QIN , Jian WU , Weirong LIU , Yuan CHENG , Lei SHI
CPC classification number: H02J50/402 , H02J50/005 , H02J50/20 , H02J50/80 , H02J50/90
Abstract: A power supply end, a wireless power supply system, a power supply method, and a computer storage medium, to improve wireless power supply efficiency. The power supply end includes a transceiver and a plurality of radiation circuits. The transceiver is configured to: generate a charging signal including an electromagnetic wave of at least one frequency band, and separately provide the charging signal for the plurality of radiation circuits. Each of the plurality of radiation circuits can transmit an electromagnetic wave of one or more target frequency bands. The plurality of radiation circuits include a first radiation circuit and a second radiation circuit. One or more target frequency bands included in an electromagnetic wave transmitted by the first radiation circuit are different from one or more target frequency bands included in an electromagnetic wave transmitted by the second radiation circuit.
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公开(公告)号：US12101033B2
公开(公告)日：2024-09-24
申请号：US17853479
申请日：2022-06-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
CPC classification number: H02M3/33571 , H02M1/0058 , H02M3/01 , H02M3/33569 , H02M3/33576
Abstract: This application provides a switching conversion circuit, including: a power module, supplying power to a switching conversion module and an integrated circuit (IC) controller; and the switching conversion module is an asymmetrical half-bridge flyback structure and includes at least a first switching transistor, a second switching transistor, a first capacitor, and a transformer. The transformer includes a first secondary-side winding and a second secondary-side winding, and the first secondary-side winding of the transformer is coupled to a load. The IC controller turns on the first switching transistor or the second switching transistor based on a value of a first voltage, so that the switching conversion module enters an operating state to supply power to the load; and turns off the first switching transistor and the second switching transistor based on a value of a second voltage, so that the switching conversion module stops supplying power to the load.
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公开(公告)号：US20240313582A1
公开(公告)日：2024-09-19
申请号：US18673718
申请日：2024-05-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Daniel Gil Belo
CPC classification number: H02J50/20 , H02J50/80 , H02J50/402
Abstract: A wireless power transfer system includes a wireless power transmitter configured to transmit a query power signal and a wireless power receiver that is in an energy depleted state that is configured to transmit a backscatter signal in response to receipt of the query power signal. The wireless power transmitter is configured to detect the backscatter signal from the wireless power receiver, determine from the backscatter signal if a wireless power delivery requirement of the wireless power receiver is met, and deliver wireless power to the wireless power receiver if the wireless power delivery requirement is met.
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公开(公告)号：US20240305099A1
公开(公告)日：2024-09-12
申请号：US18668538
申请日：2024-05-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhangping SHAO , Kai XIN , You ZHOU
CPC classification number: H02J3/1835 , H02J3/38 , H02J2300/24 , H02J2300/28
Abstract: A converter circuit is configured to output a first reactive current to a power grid when a voltage value of an output port of the converter circuit decreases from a first working voltage value to a second working voltage value. The drive control circuit is configured to: in a process in which the converter circuit outputs the first reactive current to the power grid, when it is detected that the voltage value of the output port of the converter circuit increases to a third working voltage value and the third working voltage value is greater than or equal to a first recovery voltage value, control the converter circuit to output a second reactive current to the power grid, to recover the voltage value of the output port of the converter circuit to the first working voltage value.
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公开(公告)号：US20240297578A1
公开(公告)日：2024-09-05
申请号：US18659348
申请日：2024-05-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Muhammad YAQOOB
CPC classification number: H02M3/01 , H02M3/33571 , H02M3/33584
Abstract: A bi-directional series-resonant DC-DC power converter apparatus incorporating an improved multi-mode controller eliminates burst mode operation while supporting a wide voltage range handling capability. The converter includes a half bridge switching network and a full bridge switching network coupled together with a series resonant impedance including an inductor, a capacitor, and a transformer. Under normal and heavy load conditions, a controller regulates the converter output by varying the switching frequency of a half bridge and a full bridge switching network. The converter phase shift ensures ZVS operation based on a converter gain. Under light loading, the switching frequency will exceed a pre-determined maximum frequency and a second control mode is employed where the switching frequency is set to the maximum frequency and converter output is regulated by using a feedback control loop to vary the phase shift and duty cycle of the two switching networks.
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Patent Agency Ranking
公开(公告)号：US20240291331A1
公开(公告)日：2024-08-29
申请号：US18428271
申请日：2024-01-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Chaoqiang WU , Hongbin LI , Kui JIANG
CPC classification number: H02K1/165 , H02K15/026 , H02K15/0478 , H02K15/065 , H02K2213/03
Abstract: A stator core, a motor, and a manufacturing method of a stator. The stator core includes a plurality of groups of first silicon steel sheets and one or more groups of second silicon steel sheets, each group of first silicon steel sheets includes one or more first silicon steel sheets, the one or more first silicon steel sheets in each group of first silicon steel sheets are connected end to end to form a ring-shaped structure, the plurality of groups of first silicon steel sheets are adjacently arranged in an axial direction of the stator core, each group of second silicon steel sheets is cylindrical, and the one or more groups of second silicon steel sheets are sleeved on outer peripheral surfaces of the plurality of groups of first silicon steel sheets.
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公开(公告)号：US20240291271A1
公开(公告)日：2024-08-29
申请号：US18655656
申请日：2024-05-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A power supply apparatus includes a first power module, a second power module, an energy storage module, and a controller. An output terminal of the first power module is connected in parallel to an output terminal of the second power module, which is then connected to a load, and load dynamic response performance of the second power module is better than load dynamic response performance of the first power module. The energy storage module is connected to the output terminal of the first power module and connected between a midpoint of the load and a reference ground. The energy storage module is configured to store electric energy and supply power to the load. The controller is configured to, in response to the load being in a dynamic change status, control the second power module to supply power to the energy storage module.
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68.发明公开公开(公告)号：US20240290857A1
公开(公告)日：2024-08-29
申请号：US18656251
申请日：2024-05-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Kimimori HAMADA , Fei HU
IPC: H01L29/423 , H01L29/16 , H01L29/66 , H01L29/78 , H02M7/12
CPC classification number: H01L29/4236 , H01L29/1608 , H01L29/66666 , H01L29/7827 , H01L29/7832 , H02M7/12
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 epitaxial layer includes a first P-type semiconductor region. A bottom of the trench structure is in contact with the first P-type semiconductor region. The trench structure includes a plurality of first trenches and one second trench. The first trenches extend in a first 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 a second direction. The source is disposed at the interlayer dielectric layer. The source is in contact with the source region through the contact hole and is connected to the first P-type semiconductor region.
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公开(公告)号：US20240283244A1
公开(公告)日：2024-08-22
申请号：US18653079
申请日：2024-05-02
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoguo CHEN , Hua JIANG , Yiyi HUANG , Hui DONG
IPC: H02J1/08
CPC classification number: H02J1/084
Abstract: A power supply circuit may include a plurality of first switches, a plurality of second switches, and a third switch. The plurality of first switches may be in a one-to-one correspondence with the plurality of load units, and the plurality of second switches may be in a one-to-one correspondence with the plurality of load units. A first end of each first switch and a first end of the third switch may be connected to a first end of a direct current power supply, a second end of each first switch may be connected to a first end of a corresponding second switch and a first end of a corresponding load unit, a second end of each second switch may be connected to a second end of the third switch, and a second end of the direct current power supply may be connected to a second end of each load unit.
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公开(公告)号：US20240275176A1
公开(公告)日：2024-08-15
申请号：US18642308
申请日：2024-04-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Sebastian Rosado , Piniwan Thiwanka Bandara Wijekoon
CPC classification number: H02J3/381 , H02M1/007 , H02M7/49 , H02J2300/26 , H02J2300/28
Abstract: A power conversion system includes one or more solid state transformers, and a medium voltage DC-AC inverter. Each solid state transformer includes a primary stage, including at least one DC-AC converter, each arranged to receive low voltage DC power from a power generation unit, and one or more primary medium frequency transformer windings, and a secondary stage, including at least one AC-DC rectifier, each arranged to receive AC power from a respective secondary medium frequency transformer winding. The medium voltage DC-AC inverter is configured to receive medium voltage DC power from one or more rectifiers and output medium voltage AC power.
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