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

IPC: B60L53/51 ,  B60L53/10 ,  B60L53/53 ,  H02J3/38 ,  H02J7/00 ,  H02J7/35

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.

公开(公告)号：US12051905B2

公开(公告)日：2024-07-30

申请号：US17966185

申请日：2022-10-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanzhong Zhang ,  Yongbing Gao ,  Xun Wang ,  Roland Huempfner

IPC: H02J3/32 ,  G06F1/26 ,  H02J3/38 ,  H02M3/158 ,  H02M5/10

CPC classification number: H02J3/38 ,  H02M3/1582 ,  H02M5/10

Abstract: Embodiments of this application provide a power system. An output terminal of a power supply or a DC-to-DC unit is cascaded. In addition, according to the power system provided in embodiments of this application, a quantity of cables from the power supply or the DC-to-DC unit to the DC-to-AC unit may be further reduced by cascading an output terminal of the power supply or the DC-to-DC unit and cascading an input of the DC-to-AC unit.

公开(公告)号：US12009783B2

公开(公告)日：2024-06-11

申请号：US17473534

申请日：2021-09-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianqiang Wang ,  Song Wan ,  Yanzhong Zhang ,  Yongbing Gao ,  Xinyu Yu

IPC: H02H7/00 ,  H02H1/00 ,  H02H7/20 ,  H02S50/15

CPC classification number: H02S50/15 ,  H02H1/0007 ,  H02H7/20

Abstract: A fault detection apparatus includes an image capture module and a detection module, and the fault detection apparatus is configured to capturing an image of the photovoltaic module in a light emitting state, and performing fault detection on the photovoltaic module based on the image when a signal-to-noise ratio of the image is maximized, to identify a fault type of the photovoltaic module.

公开(公告)号：US11824493B2

公开(公告)日：2023-11-21

申请号：US17826475

申请日：2022-05-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhen Cao ,  Guilei Gu ,  Su Zhou ,  Dong Chen ,  Lei Shi ,  Yanzhong Zhang

IPC: H02S40/32 ,  H02S40/36 ,  H02S40/34

CPC classification number: H02S40/36 ,  H02S40/32 ,  H02S40/34

Abstract: A power converter box and at least one junction box are integrated on a backplane of the photovoltaic module as a whole, and there is a cable for connecting the power converter and the junction box. In this case, relative to the conventional technology in which a junction box is independent of a power converter, a length of a cable used when the junction box and the power converter box are taken as a whole is shorter than a length of a cable used in the conventional technology. In this case, compared with the conventional technology in which a cable is connected to an independently placed power converter, the power converter only needs to establish a connection relationship by using a solder ribbon, a circuit board cable, and the like with low costs, so that production costs are low.

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

IPC: H02J7/35 ,  H02J3/38 ,  H02M1/32 ,  H02M7/44

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.

公开(公告)号：US20230046346A1

公开(公告)日：2023-02-16

申请号：US17966185

申请日：2022-10-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanzhong Zhang ,  Yongbing Gao ,  Xun Wang ,  Roland Huempfner

IPC: H02J3/38 ,  H02M3/158 ,  H02M5/10

Abstract: Embodiments of this application provide a power system. An output terminal of a power supply or a DC-to-DC unit is cascaded. In addition, according to the power system provided in embodiments of this application, a quantity of cables from the power supply or the DC-to-DC unit to the DC-to-AC unit may be further reduced by cascading an output terminal of the power supply or the DC-to-DC unit and cascading an input of the DC-to-AC unit.

公开(公告)号：US20220407456A1

公开(公告)日：2022-12-22

申请号：US17896730

申请日：2022-08-26

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Song Wan ,  Yongbing Gao ,  Xun Wang ,  Yanzhong Zhang ,  Zhipeng Wu

IPC: H02S50/10 ,  H02S40/32

Abstract: A linkage protection system includes an inverter, an anti-potential-induced degradation (PID) apparatus, and an insulation-monitoring apparatus. The anti-PID apparatus is configured to inject a voltage into an input end or an output end of the inverter, to increase or decrease a voltage-to-earth of a photovoltaic system. The insulation-monitoring apparatus is configured to inject an insulation-monitoring voltage into a direct current (DC) side or an alternating current (AC) side of the inverter. The anti-PID apparatus and the insulation-monitoring apparatus directly or indirectly communicate with each other, to learn of information about whether a peer apparatus is operating, and perform linkage control. The anti-PID apparatus and the insulation-monitoring apparatus operate in different time periods.

公开(公告)号：US20220140781A1

公开(公告)日：2022-05-05

申请号：US17575537

申请日：2022-01-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanzhong Zhang ,  Zhenhuan Shu

IPC: H02S40/32 ,  H02S40/38

Abstract: A photovoltaic system includes a plurality of photovoltaic strings, at least one junction device, and at least one inverter. Each photovoltaic string includes a first direct current output terminal, and is configured to generate a first direct current. Each junction device is coupled to the plurality of photovoltaic strings. Each junction device is configured to output second direct currents through second direct current output terminals of the junction device after converging a plurality of first direct currents. An ith junction device includes a plurality of second direct current output terminals. The ith junction device is configured to output a plurality of mutually independent second direct currents after converging a plurality of first direct currents, and i is a positive integer. A quantity of the plurality of second direct currents is less than a quantity of the plurality of first direct currents.