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公开(公告)号：US20230391218A1
公开(公告)日：2023-12-07
申请号：US18168529
申请日：2023-02-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xiaofeng Yao , Haibin Hu
CPC classification number: B60L53/51 , H02J7/35 , H02J7/00712 , H02J3/38 , H02J2207/20 , H02J2300/24 , B60L2210/40 , B60L2210/14
Abstract: This application provides a charging module and a charging system. The charging system includes a charging module. The charging module includes a direct current-to-direct current (DC/DC) charging component, a functional interface, an inverter, and a control and guide component. The functional interface includes a photovoltaic interface. The DC/DC charging component is configured to receive a first power exported by a photovoltaic module to charge an electric vehicle (EV). In this way, after receiving, through the photovoltaic interface, electrical energy converted from solar energy, the charging module does not need to cooperate with an on-board charger (OBC), but uses the DC/DC charging component to charge the EV with a direct current. The charging module provided in this application is not limited by a charging power of the OBC when charging the EV, thereby increasing an actual power for charging the EV and a charging speed.
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公开(公告)号：US12194875B2
公开(公告)日：2025-01-14
申请号：US18168529
申请日：2023-02-13
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Xiaofeng Yao , Haibin Hu
Abstract: This application provides a charging module and a charging system. The charging system includes a charging module. The charging module includes a direct current-to-direct current (DC/DC) charging component, a functional interface, an inverter, and a control and guide component. The functional interface includes a photovoltaic interface. The DC/DC charging component is configured to receive a first power exported by a photovoltaic module to charge an electric vehicle (EV). In this way, after receiving, through the photovoltaic interface, electrical energy converted from solar energy, the charging module does not need to cooperate with an on-board charger (OBC), but uses the DC/DC charging component to charge the EV with a direct current. The charging module provided in this application is not limited by a charging power of the OBC when charging the EV, thereby increasing an actual power for charging the EV and a charging speed.
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公开(公告)号：US11722001B2
公开(公告)日：2023-08-08
申请号：US17749373
申请日：2022-05-20
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yanzhong Zhang , Haijun Ye , Xiaofeng Yao
CPC classification number: H02J7/35 , H02J3/381 , H02M1/32 , H02M7/44 , H02J2207/20 , H02J2207/50 , H02J2300/24
Abstract: A pre-charging circuit is provided, including a first switch, a second switch, a diode, a first current-limiting apparatus, a capacitor, and an inverter unit. One end of the pre-charging circuit is connected to a power grid. After the first current-limiting apparatus, the first switch, and the diode are connected in series, one end of a line formed by the series connection is connected to one terminal of the capacitor, the other end of the line is connected to a first-phase alternating current of the power grid, and the other terminal of the capacitor is connected to a second-phase alternating current of the power grid via the inverter unit and the second switch successively.
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公开(公告)号：US12249905B2
公开(公告)日：2025-03-11
申请号：US18174855
申请日：2023-02-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhen Cao , Dong Chen , Xiaofeng Yao
Abstract: A serial-parallel converter protection system includes a controller, a drive, a first switching transistor, and a second switching transistor. An input terminal of a converter is connected to an output terminal of the converter through the first switching transistor. The output terminal of the converter is connected in parallel with the second switching transistor. When an output voltage of the converter is greater than a first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on. In some embodiments, when the output voltage of the converter is greater than the first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on, so that the converter is bypassed, thereby preventing a voltage and a current from impacting a component inside the converter.
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公开(公告)号：US12107534B2
公开(公告)日：2024-10-01
申请号：US17994632
申请日：2022-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhiwu Xu , Guilei Gu , Xiaofeng Yao
CPC classification number: H02S40/32 , G05F1/67 , H02J1/14 , H02J7/35 , H02J2300/26
Abstract: A photovoltaic system includes at least one DC/DC converter and the inverter. An input terminal of the at least one DC/DC converter is configured to connect to a photovoltaic module, an output terminal is configured to connect to an input terminal of the inverter by using a direct current bus, and an output terminal of the inverter is connected to an alternating current grid. When the inverter is switched from a non-power-limited working state to a power-limited working state, the inverter adjusts a bus voltage of the inverter to rise from a first voltage to a second voltage. After running in the power-limited working state for a time interval, the inverter adjusts the bus voltage to drop from the second voltage to a third voltage, where the third voltage is less than or equal to the first voltage.
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Patent Agency Ranking
公开(公告)号：US12107425B2
公开(公告)日：2024-10-01
申请号：US17980812
申请日：2022-11-04
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaofeng Yao , Yang Cheng , Guozhao Duan
CPC classification number: H02J3/381 , H02J3/00125 , H02M1/32 , H02J2300/24
Abstract: This application discloses a photovoltaic power generation system and method, and the system includes an inverter and at least one shutdown apparatus. A type of the shutdown apparatus includes at least one of a shutdown device and an optimizer; and an input end of each shutdown apparatus is connected to a corresponding PV module, and power of the corresponding PV module is output. In the system, when a parameter of the inverter meets a preset condition, some shutdown apparatuses are turned off to lower an input voltage of the inverter, and ensure that an input end of the inverter has a direct current source, and the system can operate as usual; and the preset condition is that the input voltage of the inverter is greater than a first preset voltage, or an input current of the inverter is less than a first preset current.
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公开(公告)号：US20230114612A1
公开(公告)日：2023-04-13
申请号：US18045731
申请日：2022-10-11
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhengang Song , Xiaofeng Yao
IPC: H02M7/5387
Abstract: An inverter and an inverter apparatus improves efficiency of the inverter while enabling an output voltage of the inverter to meet requirements of different devices. The inverter includes an input capacitor branch, a first bridge arm, a second bridge arm, a first inductor, a second inductor, a first capacitor, a second capacitor, and a freewheeling circuit. A first terminal of the first bridge arm is connected to a first terminal of the second bridge arm and a first terminal of the input capacitor branch. A second terminal of the first bridge arm is connected to a second terminal of the second bridge arm and a second terminal of the input capacitor branch. An intermediate node of the first bridge arm is connected to a first terminal of the second inductor. An intermediate node of the second bridge arm is connected to a first terminal of the first inductor.
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公开(公告)号：US12009665B2
公开(公告)日：2024-06-11
申请号：US17825108
申请日：2022-05-26
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaofeng Yao , Yanzhong Zhang , Guilei Gu
CPC classification number: H02J3/381 , H02S40/30 , H02J2300/24 , Y02E10/56
Abstract: A photovoltaic system, an optimizer, a controller, a computer program product, a computer-readable storage medium, a chip, and a method for adjusting a working state of an optimizer are provided. The photovoltaic system includes a photovoltaic panel and an optimizer. The optimizer includes a controller, a first output port, and a second output port. The controller is configured to detect an electrical signal parameter between the first output port and the second output port. The controller is configured to adjust a working state of the optimizer from a no-output state or a limited-output state to an unlimited-output state when the electrical signal parameter changes. In the photovoltaic system, the working state can be adjusted without using an unlocking apparatus, so that an implementation is simple, and costs are reduced.
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公开(公告)号：US20240063754A1
公开(公告)日：2024-02-22
申请号：US18496226
申请日：2023-10-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Zhen Cao , Dong Chen , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
Abstract: This application provides a power converter box used in a photovoltaic system. The power converter box includes at least two power converters, and the at least two power converters include one primary power converter and at least one secondary power converter. The primary power converter obtains status information of a photovoltaic substring corresponding to a secondary power converter, and sends, to an inverter by using a PLC communication module in the primary power converter, the status information of the photovoltaic substring corresponding to the secondary power converter and status information of a photovoltaic substring corresponding to the primary power converter. The primary power converter further receives, by using the PLC communication module in the primary power converter, control information sent by the inverter, controls, based on the control information, an output power of the photovoltaic substring corresponding to the primary power converter.
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公开(公告)号：US20230115497A1
公开(公告)日：2023-04-13
申请号：US17964128
申请日：2022-10-12
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Dong Chen , Zhen Cao , Xiaofeng Yao , Jiebin Cheng , Guilei Gu
IPC: H02J3/38 , H02M1/32 , H02M1/36 , H02M3/158 , H03K17/082
Abstract: A power converter analog chip includes a sampling circuit configured to collect electrical parameters of the power converter; a maximum power point tracking circuit configured to perform maximum power point tracking based on the input power or the output power obtained by the electrical parameters, and to obtain an adjustment signal; a rapid shutdown circuit configured to, when receiving a rapid shutdown instruction sent from the outside of the analog chip, generate a rapid shutdown signal; a protection circuit, configured to, when an electrical parameter of the power converter exceeds a first preset threshold, generate a protection signal and send the protection signal to the multiplexer; and a multiplexer configured to select one of the rapid shutdown signal, the protection signal, or the adjustment signal as a control signal, to control a power component in the power converter.
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