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151.发明公开公开(公告)号：US20230208137A1
公开(公告)日：2023-06-29
申请号：US18177975
申请日：2023-03-03
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Francisco Daniel FREIJEDO FERNÁNDEZ
CPC classification number: H02J3/08 , H02M1/4208 , H02M1/0009 , H02M1/0087
Abstract: Example unity power factor converter, (UPFC) operating methods and apparatus are described. In one example, the UPFC comprises a closed-loop control for regulation of an input current from a power grid in accordance with a reference variable for the input current. The UPFC is configured to determine amplitudes of frequency components of the input current, and establish a phase angle of the reference variable in dependence of a phase angle of a fundamental frequency component of an input voltage from the power grid and of the amplitudes of the frequency components.
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公开(公告)号：US20230199998A1
公开(公告)日：2023-06-22
申请号：US18174080
申请日：2023-02-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yonghui PENG
CPC classification number: H05K7/1492 , H05K7/2079
Abstract: A data center and an expansion method are provided to avoid a phenomenon of dense cables during data center expansion. In the data center, a first power device is connected to a computing device by using a bus, and a plug-in node and an idle electrical connection end are pre-disposed on the bus. In this way, when expansion is required, a second power device for expansion is directly added to the idle electrical connection end, and the bus is disconnected by using the plug-in node. In this way, the first power device and the second power device for expansion respectively supply power to the computing device by using two parts of the disconnected bus. According to this mode, no additional cable is required during the data center expansion, but an existing cable is directly disconnected to support power supply of a power device for expansion.
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公开(公告)号：US11677328B2
公开(公告)日：2023-06-13
申请号：US17481076
申请日：2021-09-21
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Weiping Liu , Yongtao Liang , Chen Chen
IPC: H02M7/219 , H02M7/5387 , H02M1/10
CPC classification number: H02M7/219 , H02M1/10 , H02M7/5387
Abstract: A converter and a power supply system are disclosed, and relate to the power electronics field, to resolve a problem that a sampling circuit in an OBC circuit is relatively complex. The converter includes an alternating current unit, a switching unit, a conversion unit, a direct current unit, and a controller. The alternating current unit includes a U line, a V line, a W line, and an N line. The N line is connected to a ground of the controller, so that the controller can be directly connected to the U line, the V line, and the W line, to collect a voltage of the U line, a voltage of the V line, and a voltage of the W line. This simplifies the sampling circuit.
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公开(公告)号：US20230179106A1
公开(公告)日：2023-06-08
申请号：US18063321
申请日：2022-12-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jun Wang , Lei Shi , Yunfeng Liu , Zhaohui Wang
IPC: H02M3/335 , H02M1/08 , H03K17/687
CPC classification number: H02M3/33584 , H02M1/08 , H03K17/687
Abstract: A bidirectional direct current converter includes a controller that controls a switching transistor in the bidirectional direct current converter to reduce an inductance of an inductor, thereby reducing a size and costs of the inductor, and further reducing a size and costs of the entire bidirectional direct current converter. The bidirectional direct current converter further includes a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, and a capacitor. The controller is coupled to the first switching transistor, the second switching transistor, the third switching transistor, and the fourth switching transistor. The controller performs complementary control on the first switching transistor and the third switching transistor, and performs complementary control on the second switching transistor and the fourth switching transistor.
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公开(公告)号：US20230170814A1
公开(公告)日：2023-06-01
申请号：US18161225
申请日：2023-01-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhengdong Jiang , Peng Shuai , Zhuyong Huang
Abstract: A solid-state transformer (10) that maintains output voltage continuity during maintenance is provided. The solid-state transformer includes an input end (101), a plurality of power units (U1 to UM), and an output end (102). The input end is configured to input first three-phase alternating-current electrical power. The plurality of power units are connected in parallel to the input end and the output end, and each power unit is configured to convert the first three-phase alternating-current electrical power into first direct-current electrical power, and output the first direct-current electrical power from the output end. A power supply system (100) including the foregoing solid-state transformer is further included.
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Patent Agency Ranking
公开(公告)号：US20230170792A1
公开(公告)日：2023-06-01
申请号：US18162524
申请日：2023-01-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yongbing Gao , Dong Chen , Lei Shi
IPC: H02M1/36 , H02M7/5387 , H02M1/44
CPC classification number: H02M1/36 , H02M7/5387 , H02M1/44 , H02J3/00
Abstract: Embodiments of this application provide a power conversion circuit, a power transmission system, and a photovoltaic device. The power conversion circuit includes: a first bridge arm, where the first bridge arm includes a first upper bridge arm and a first lower bridge arm; the first upper bridge arm includes a switching component connected between an input positive end and an output end; the first lower bridge arm includes a switching component connected between the output end and an input negative end; each of the switching components includes a switching transistor and a first diode anti-parallel connected to the switching transistor.
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公开(公告)号：US20230170720A1
公开(公告)日：2023-06-01
申请号：US18070878
申请日：2022-11-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ruisheng Li
IPC: H02J7/00
CPC classification number: H02J7/00716 , H02J7/00041 , H02J7/007194 , H02J7/0048
Abstract: A charging apparatus and charging method. The apparatus includes a step-current adjustment circuit and an inertial link circuit. The step-current adjustment circuit is configured to determine a first current value based on a charging current condition, and provide a current of the first current value to the inertial link circuit, where the charging current condition includes a temperature and a charge state of the battery, and determine a second current value based on a present charging current condition and in response to the charging current condition changing, and provide a current of the second current value to a current smoothing module. The inertial link circuit adjusts the charging current from the first current value to the second current value in response to the received charging current being converted from the first current value to the second current value, and continuously outputs the adjusted current to the battery.
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公开(公告)号：US20230164962A1
公开(公告)日：2023-05-25
申请号：US18158286
申请日：2023-01-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Faming Sun , Quanming Li , Jun Chen
IPC: H05K7/20
CPC classification number: H05K7/209 , H05K7/20936 , H05K7/20409
Abstract: A heat dissipation apparatus or an inverter, includes a main heat sink, an extra heat sink, and a heat conducting element, the main heat sink includes a main substrate and a main fin, one end of the main fin is connected to the main substrate, the extra heat sink is located at an end of the main fin farther from the main substrate, the extra heat sink is detachably connected to the main heat sink, and the heat conducting element extends from the main substrate to the extra heat sink, to transfer heat between the main substrate and the extra heat sink. In this application, the heat dissipation apparatus is designed as a split structure. A dual heat dissipation function of the main heat sink and the extra heat sink improves a heat dissipation capability of the heat dissipation apparatus, and improves heat dissipation efficiency.
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公开(公告)号：US20230155239A1
公开(公告)日：2023-05-18
申请号：US17987144
申请日：2022-11-15
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Ruisheng MA , Jiafei SHI
IPC: H01M50/264 , H01M50/209 , H01M50/507 , H01M50/588 , H01M50/593 , H01M50/242
CPC classification number: H01M50/264 , H01M50/209 , H01M50/507 , H01M50/588 , H01M50/593 , H01M50/242
Abstract: A cell fixing apparatus includes a first shell element, a second shell element, and a plurality of pressure-adding beams. The first shell element and the second shell element are relatively fixedly connected, the first shell element and the second shell element are disposed at intervals in a first direction, so that an accommodating cavity is provided between the first shell element and the second shell element, and the accommodating cavity is configured to accommodate the cell. The plurality of pressure-adding beams may be disposed on a surface of the first shell element that is away from the second shell element. The plurality of pressure-adding beams may include a first-type beam and a second-type beam. A size of the first-type beam in the first direction is greater than that of the second-type beam. The pressure-adding beams are used to limit deformation of the cell in the accommodating cavity.
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公开(公告)号：US20230150352A1
公开(公告)日：2023-05-18
申请号：US17984552
申请日：2022-11-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Jiyang Li
Abstract: An oil temperature control method is applied to a controller of an electric vehicle that includes an oil cooling circuit, where the oil cooling circuit flows through a motor and an inverter. The method includes the following steps: determining an oil temperature at a detection point, where the detection point is a specified location in the oil cooling circuit; when the oil temperature is lower than a first target temperature, triggering one or more of the following operations: bypassing an oil-water heat exchanger, reducing a water flow rate, and increasing a power of an oil pump; or when the oil temperature is higher than a second target temperature, triggering one or more of the following operations: disabling a bypass path of an oil-water heat exchanger, increasing a water flow rate, and reducing a power of an oil pump.
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