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公开(公告)号：US12212221B2
公开(公告)日：2025-01-28
申请号：US17899611
申请日：2022-08-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhuyong Huang , Xiaofei Zhang , Peng Shuai
Abstract: This application discloses a power electronic transformer wherein each phase includes a plurality of power conversion modules. Each power conversion module includes a rectifier AC/DC circuit, a direct current bus capacitor, and a direct current-direct current DC/DC circuit. In each power conversion module, an output end of the AC/DC circuit is connected to an input end of the DC/DC circuit; the direct current bus capacitor is connected in parallel to the output end of the AC/DC circuit; and input ends of all the AC/DC circuits are connected in series, and output ends of all the DC/DC circuits are connected in parallel. The power electronic transformer includes a relatively small quantity of power conversion modules, thereby reducing occupied space and costs.
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公开(公告)号：US12212142B2
公开(公告)日：2025-01-28
申请号：US18362728
申请日：2023-07-31
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Kui Zhou , Fuwen Chen , Wenke Yang
Abstract: An electrical energy storage system is provided in this disclosure, which includes: M battery packs; M first DC/DC converters, where first terminals of the M first DC/DC converters are respectively connected to the M battery packs, the M first DC/DC converters are classified into N first DC/DC converter sets; and N second DC/DC converters, where the N second DC/DC converters one-to-one correspond to the N first DC/DC converter sets, a first terminal of each second DC/DC converter is connected to second terminals of all first DC/DC converters in a first DC/DC converter set corresponding to the second DC/DC converter, a second terminal of each second DC/DC converter is connected to a first interface of the electrical energy storage system, the first interface is to receive a direct current from a power generation system or output a direct current to the power generation system.
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公开(公告)号：US12206232B2
公开(公告)日：2025-01-21
申请号：US18521816
申请日：2023-11-28
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 power generation system is faulty.
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公开(公告)号：US20250023456A1
公开(公告)日：2025-01-16
申请号：US18899666
申请日：2024-09-27
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Yuan YAO , Xinyu YU , Kai XIN , Zhaoqi CAI
Abstract: Example power converters and detection methods are described. One example power converter includes a control device, a plurality of wiring terminals, a power conversion circuit, and a plurality of temperature detection devices. The control device is configured to: when an absolute value of a difference between a temperature value of one wiring terminal in the plurality of wiring terminals and a first reference temperature value is greater than or equal to a first temperature difference threshold, output a signal indicating that an abnormality occurs in the plurality of wiring terminals. In this application, a relative change of a temperature of one wiring terminal relative to another wiring terminal can be directly determined based on temperature values of the plurality of wiring terminals, thereby quickly determining, based on a magnitude of the relative change, whether there is an abnormal temperature rise caused by loose connections in the plurality of wiring terminals.
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35.发明申请公开(公告)号：US20250015017A1
公开(公告)日：2025-01-09
申请号：US18890724
申请日：2024-09-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Eckart Hoene , Luise Pawlak , Ming Wu , Xiaofeng Xu , Zhengyan He
Abstract: A semiconductor device includes a package body, a chip, a redistribution layer, and a conductive hot melt layer. The chip, the redistribution layer, and the conductive hot melt layer are all packaged in the package body. The redistribution layer includes a first conductive pad and a second conductive pad that are disposed at an interval from each other and insulated from each other, wherein a part of the redistribution layer other than the first conductive pad and the second conductive pad is connected to a pin of the chip; and the conductive hot melt layer is formed on a surface of the first conductive pad and a surface of the second conductive pad, and is in electrical contact with both the first conductive pad and the second conductive pad.
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Patent Agency Ranking
公开(公告)号：US20250014964A1
公开(公告)日：2025-01-09
申请号：US18891135
申请日：2024-09-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Andreas MUNDING , Yumin Liu , Lasse Petteri Palm
IPC: H01L23/373 , H01L21/48 , H01L23/00 , H01L23/31
Abstract: A hybrid bond sheet for mounting a semiconductor power module to a heat sink includes a thermally conductive core layer having an upper main face and a lower main face; a first bond layer formed at the upper main face of the core layer for bonding the hybrid bond sheet to a semiconductor power module; and a second bond layer formed at the lower main face of the core layer for bonding the hybrid bond sheet to a heat sink; where the core layer is subdivided into a plurality of core metal sections and core polymer sections which are formed side-by-side between the upper main face and the lower main face, the subdivided core metal sections being configured to enable a uniform heat transfer between the semiconductor power module and the heat sink and to reduce thermal stress at interfaces between the hybrid bond sheet and the heat sink.
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37.发明授权公开(公告)号：US12193175B2
公开(公告)日：2025-01-07
申请号：US17711240
申请日：2022-04-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Wenxue Wu , Wanxiang Ye
IPC: H05K5/02
Abstract: The multi-temperature control cabinet includes a cabinet body, a cabinet door, and a refrigerating system. The refrigerating system includes at least one air conditioner, at least one direct ventilation unit, and an environment monitoring apparatus. Both the air conditioner and the direct ventilation unit are disposed on the cabinet door, and the air conditioner and the direct ventilation unit are disposed in parallel in a height direction of the cabinet door. An air guide assembly is disposed between the direct ventilation unit and an air exhaust vent of the air conditioner. The environment monitoring apparatus is connected to both the air conditioner and the direct ventilation unit, and the environment monitoring apparatus is configured to monitor temperature and humidity in the cabinet body, and control turning-on and turning-off of the air conditioner and the direct ventilation unit based on the temperature and the humidity in the cabinet body.
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公开(公告)号：US20250007323A1
公开(公告)日：2025-01-02
申请号：US18758260
申请日：2024-06-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Gouyi CHEN
IPC: H02J9/06
Abstract: An uninterruptible power supply. A rectifier of the uninterruptible power supply includes six first rectifier diodes, six second rectifier diodes, three alternating current side relays, six direct current side relays, a DC/DC conversion unit, and a controller. The other end of each alternating current side relay is connected to anodes of two first rectifier diodes, and cathodes of the two first rectifier diodes are respectively connected to two phases of positive input ends of the DC/DC conversion unit. The other end of each alternating current side relay is further connected to cathodes of two second rectifier diodes, and anodes of the two second rectifier diodes are respectively connected to two phases of negative input ends of the DC/DC conversion unit.
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公开(公告)号：US12184073B2
公开(公告)日：2024-12-31
申请号：US17875923
申请日：2022-07-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Mingxuan Dong , Yunfeng Liu , Kai Xin
Abstract: An energy storage system includes at least two power conversion systems PCSs, output terminals of the at least two PCSs are connected in parallel to connect to an alternating current power grid, and input terminals of the at least two PCSs are connected to an energy storage power supply. The first PCS is any one of the at least two PCSs. The voltage detection circuit detects a power grid voltage at a parallel connection point of the output terminals of the at least two PCSs. When determining, based on the power grid voltage at the parallel connection point, that islanding occurs in the alternating current power grid, the controller adjusts an angle of an output voltage of the first PCS to a reference angle, so that angles of output voltages of the at least two PCSs are the same.
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公开(公告)号：US12184067B2
公开(公告)日：2024-12-31
申请号：US17707451
申请日：2022-03-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jianhua Peng , Haibo Long , Zehua Liang , Wanxiang Ye , Wei Guo , Yanxing Yang , Fugao Zhao
Abstract: A communication power supply system includes an alternating current power distribution module, a rectifier module, a monitoring module, a direct current power distribution module, and a signal-driven collection board. The monitoring module sends a control signal to the direct current power distribution module by using the signal-driven collection board, where the control signal is used to control the closing or opening of a circuit in the direct current power distribution module. The communication power supply system uses the monitoring module to control the direct current power distribution module, to control whether to power on the loads connected to the direct current power distribution module.
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