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公开(公告)号：US20220285885A1
公开(公告)日：2022-09-08
申请号：US17683767
申请日：2022-03-01
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Kai YIN , Cheng MA , Xiaoke RAN , Wei GUO
IPC: H01R13/642 , H02B1/056 , H02B1/20
Abstract: The power distribution component is configured to connect to a power distribution box in a pluggable manner. A main body is provided with a first power terminal, a signal terminal, and a second power terminal that are arranged along a first direction. The first power terminal is configured to electrically connect to a first power busbar of the power distribution box, the signal terminal is configured to electrically connect to a signal busbar of the power distribution box, and the second power terminal is configured to electrically connect to a second power busbar of the power distribution box. Polarities of the first power terminal and the second power terminal are opposite. An end, facing away from the main body, of the mistake proofing structure is provided with an abutting surface, configured to abut against the signal busbar when the power distribution component is reversely inserted into the power distribution box.
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公开(公告)号：US11438026B2
公开(公告)日：2022-09-06
申请号：US17137915
申请日：2020-12-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yongbing Gao , Yanzhong Zhang , Tiansan Lin , Wei Shui , Chen Wang
Abstract: An inverter in a power generation system converts a direct current that is input from a direct-current-side device into an alternating current for power supply. The inverter includes a control apparatus and a communications apparatus. The control apparatus controls the inverter to convert the direct current that is input from the direct-current-side device into an alternating current for power supply. The communications apparatus is coupled to the control apparatus, and sends a networking information request signal used to request networking information to the direct-current-side device in the power generation system through a direct-current power line, where a frequency of the networking information request signal is within a first frequency band. The communications apparatus also receives the networking information from the direct-current-side device; and sends a control signal to the direct-current-side device, where a frequency of the control signal is within a second frequency band.
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公开(公告)号：US11437904B2
公开(公告)日：2022-09-06
申请号：US17112571
申请日：2020-12-04
Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Inventor： Zhengyan He , Jiebin Cheng , Qinghai Wang , Yuliang Lu
Abstract: Embodiments of the present disclosure disclose a power converter and a related system. The power converter includes a controller and a power conversion circuit. The power conversion circuit is configured to convert an input power of an input power supply into an output power of a load, where the input power supply is an external power supply connected to the power converter. The controller is configured to control on/off of the first switch element, to implement connection/disconnection between the input power supply and the inductive element; and control the unidirectional conduction circuit to be turned on before the first switch element is turned on in the power conversion cycle.
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公开(公告)号：US20220268822A1
公开(公告)日：2022-08-25
申请号：US17675388
申请日：2022-02-18
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hualei JU
Abstract: An insulation impedance detection method includes: An inverter injects a first common-mode voltage into an alternating current side, where the first common-mode voltage is divided by an alternating current grounding insulation impedance of an alternating current cable and a direct current grounding insulation impedance of a photovoltaic unit. The inverter can obtain an impedance value of the alternating current grounding insulation impedance based on the first common-mode voltage, a voltage divided by the alternating current grounding insulation impedance for the first common-mode voltage (a second common-mode voltage on the alternating current grounding insulation impedance), and an impedance value of the direct current grounding insulation impedance. The alternating current grounding insulation impedance is detected by using a necessary device, namely, the inverter in a photovoltaic power generation system. In this way, an additional detection device is not mounted, which reduces costs and complexity of alternating current grounding insulation impedance detection.
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公开(公告)号：US20220255455A1
公开(公告)日：2022-08-11
申请号：US17668238
申请日：2022-02-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: This application discloses a converter and a power adapter, to reduce an energy loss of the power adapter. The converter includes: a DC power supply, a primary power transistor, an auxiliary power transistor, a first capacitor, a transformer, and a control circuit. The first capacitor is connected in series to the transformer to form a series circuit, the series circuit is connected in parallel to a first terminal and a second terminal of the auxiliary power transistor. The control circuit is configured to: when an excitation current in the transformer is in a continuous state, regulate a target voltage to a preset voltage threshold, and control the primary power transistor to be turned on when first dead time ends, where the target voltage is a voltage between the first terminal of the primary power transistor and the ground.
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Patent Agency Ranking
公开(公告)号：US20220255407A1
公开(公告)日：2022-08-11
申请号：US17708792
申请日：2022-03-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhenxing Chen , Guoquan Yu , Wenwu Ma , Chao Cao
Abstract: This application provides a motor, a power assembly, and a motor drive device. In this application, the motor includes a grounding ring and a first sealing piece, or includes a grounding ring, a first sealing piece, and a second sealing piece. The grounding ring is electrically connected to a rotating shaft and a housing. Because the grounding ring is made of a material with good conduction performance, a shaft induced voltage transmitted on the rotating shaft can be transmitted to the housing through the grounding ring, instead of being transmitted to the housing through a motor bearing, thereby avoiding bearing electric corrosion of the motor bearing.
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公开(公告)号：US11411496B2
公开(公告)日：2022-08-09
申请号：US16565302
申请日：2019-09-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Hengchun Mao , Yan-Fei Liu , Renhua Wu
Abstract: A power regulator includes an input capacitor connected between a first voltage bus and an intermediate point, an output capacitor connected between a second voltage bus and the intermediate point, a plurality of switches and an inductor connected between the input capacitor and the output capacitor, wherein a source of one switch of the plurality of switches is connected to the intermediate point and a protection device connected between the intermediate point and a third voltage bus.
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公开(公告)号：US20220247214A1
公开(公告)日：2022-08-04
申请号：US17727355
申请日：2022-04-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Songnan YANG , Xiaoqing HU , Bing CAI
Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing of the mobile terminal, and includes two interconnected coils. The two coils are located in a same plane and are connected in series, and winding directions of the two coils are opposite, so that directions of magnetic fluxes generated by the two coils on the metal rear housing are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.
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公开(公告)号：US20220240420A1
公开(公告)日：2022-07-28
申请号：US17584948
申请日：2022-01-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Qian ZHU , Yonghuang TONG , Qingfei SONG
IPC: H05K7/20
Abstract: A ventilation wall system has an air intake end for air entering and an air exhaust end for air exhausting. The ventilation wall system includes a heat exchanger module, a fan module, an electric control module, and an air filter module. The heat exchanger module is configured to exchange heat for air entering the heat exchanger module. The fan module is configured to convey air on one side of the fan module to the other side of the fan module. The electric control module is electrically connected to the fan module and the heat exchanger module. The air filter module is configured to filter air entering the air intake end. When the fan module is disposed on a side that is of the heat exchanger module and that is close to the air exhaust end, air after heat exchange performed by the heat exchanger module is sent out.
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公开(公告)号：US20220231499A1
公开(公告)日：2022-07-21
申请号：US17584102
申请日：2022-01-25
Applicant: Huawei Digital Power Technologies Co., Ltd.
Abstract: A photovoltaic power generation system includes a capacitor bridge arm, an inverter bridge arm, and the fault protection apparatus. The capacitor bridge arm includes a positive electrode output port, a negative electrode output port, and a reference output port The inverter bridge arm includes a positive electrode input port, a negative electrode input port, and a reference input port. The positive electrode input port is connected to the positive electrode output port. The negative electrode input port is connected to the negative electrode output port. The reference input port is connected to the reference output port by using the fault protection apparatus. The fault protection apparatus is turned off based on a magnitude value or a variation of a voltage, or a magnitude value or a variation of a current between the reference input port and the positive electrode input port or the negative electrode input port.
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