公开(公告)号：US20240079882A1

公开(公告)日：2024-03-07

申请号：US18507622

申请日：2023-11-13

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Longting Sun ,  Tiansan Lin ,  Bo Yu ,  Yongbing Gao

IPC: H02J3/46 ,  H02J3/00 ,  H02M1/00

CPC classification number: H02J3/46 ,  H02J3/0012 ,  H02M1/0048 ,  H02M1/007 ,  H02M1/008 ,  H02J2300/24

Abstract: This application discloses a photovoltaic power generation system control method, a photovoltaic power generation system, and a switching apparatus, to reduce a loss of the photovoltaic power generation system. The switching apparatus includes: a switching unit, a detection unit, and a controller. The switching unit includes a first output end, a second output end, a first input end connected to each first DC/DC converter in a one-to-one correspondence, and a second input end connected to each second DC/DC converter in a one-to-one correspondence. The first output end is connected to an input end of a first DC/AC converter, and the second output end is connected to an input end of a second DC/AC converter. The detection unit is separately connected to the first DC/AC converter, the second DC/AC converter, a plurality of first DC/DC converters, and a plurality of second DC/DC converters.

公开(公告)号：US20240030724A1

公开(公告)日：2024-01-25

申请号：US18477029

申请日：2023-09-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Lin Li ,  Zhipeng Wu ,  Bo Yu

IPC: H02J7/00

CPC classification number: H02J7/0016 ,  H02J7/005 ,  H02J7/0048 ,  H02J7/00712 ,  H02J2207/20

Abstract: In accordance with an embodiment, and energy storage system includes a battery cluster, a power conversion circuit, and a controller. An output end of the battery cluster is connected to a first terminal of the power conversion circuit, and a second terminal of the power conversion circuit is connected to an output end of the energy storage system. Each battery cluster includes at least two energy storage modules connected in series, each energy storage module includes one bypass circuit and one battery pack, and each battery pack includes a plurality of batteries. The controller controls each bypass circuit based on a first parameter value of each battery pack, so that electricity quantities of battery packs are balanced.

公开(公告)号：US11852671B2

公开(公告)日：2023-12-26

申请号：US17707436

申请日：2022-03-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhong Wang ,  Shengjie Zhang ,  Jianshan Li ,  Yu Peng ,  Shijiang Yu ,  He Zhou ,  Bo Yu

IPC: G01R31/52 ,  G01R31/14 ,  H02J3/38

CPC classification number: G01R31/14 ,  G01R31/52 ,  H02J3/381 ,  H02J2300/24

Abstract: A photovoltaic energy system and a method for detecting a ground insulation impedance, improve accuracy of detecting a ground insulation impedance after one or more conversion circuits are connected in parallel. The photovoltaic energy system includes one or more conversion circuits and a detection circuit. The detection circuit includes an alternating current signal source and a sampling resistor that are connected in series, a first sampling circuit, and a control circuit. The control circuit is configured to control the alternating current signal source to output harmonic signals of a first frequency and a second frequency. The first sampling circuit is configured to: when the alternating current signal source outputs the harmonic signal of the first frequency, collect a voltage at both terminals of the sampling resistor to obtain a first voltage.

公开(公告)号：US20240096782A1

公开(公告)日：2024-03-21

申请号：US18468362

申请日：2023-09-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Bo Yu ,  Xudong Wang ,  Xin Li

IPC: H01L23/498 ,  H01L23/373 ,  H01L25/07

CPC classification number: H01L23/49894 ,  H01L23/3735 ,  H01L23/49811 ,  H01L25/072 ,  H01L24/48 ,  H01L2224/48137

Abstract: A packaging device includes a first circuit substrate and a second circuit substrate that are electrically connected. The first circuit substrate includes a first line layer and a first insulation layer that are sequentially stacked, and a first electronic component is disposed on the first circuit substrate. The second circuit substrate includes a second line layer and a second insulation layer that are sequentially stacked, and a second electronic component is disposed on the second circuit substrate. A thermal conductivity of the first insulation layer is higher than a thermal conductivity of the second insulation layer. This application further provides a packaging module and an electronic device in which the packaging device is used. The packaging device in this application, the first insulation layer and the second insulation layer with different thermal conductivities are targetedly configured, and layouts of the first circuit substrate and the second circuit substrate are flexible.

公开(公告)号：US20240021890A1

公开(公告)日：2024-01-18

申请号：US18475774

申请日：2023-09-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianshan Li ,  Bo Yu ,  Bo Li

IPC: H01M10/42 ,  H01M50/204 ,  H01M10/48 ,  H01M50/583 ,  H02J7/00

CPC classification number: H01M10/4257 ,  H01M50/204 ,  H01M10/482 ,  H01M50/583 ,  H02J7/0013 ,  H01M2010/4271 ,  H01M2200/103 ,  H01M2010/4278

Abstract: This application discloses a battery system and an energy storage container. The battery system includes a plurality of battery packs that are connected in series. Each battery pack corresponds to one first switch that is connected in series to the battery pack. Each battery pack corresponds to one second switch that is connected in parallel to the battery pack. Each battery pack is connected in series to the corresponding first switch and then connected in parallel to the second switch. The first switch includes a plurality of controllable switching transistors that are connected in parallel. The second switch includes a plurality of controllable switching transistors that are connected in parallel. The plurality of controllable switching transistors included in the first switch correspond to at least two different turn-on moments. The plurality of controllable switching transistors included in the second switch correspond to at least two different turn-on moments.