公开(公告)号：US20250070300A1

公开(公告)日：2025-02-27

申请号：US18811991

申请日：2024-08-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Qi WU ,  Yihong WU ,  Yuandong MENG ,  Haibin GUO ,  Ye He

IPC: H01M10/615 ,  H01M10/42 ,  H01M10/635 ,  H01M10/6571

Abstract: An energy storage apparatus and an energy storage system. The energy storage apparatus includes a cell and a heating circuit. The heating circuit includes a heating resistor and a switch. The heating resistor and the switch are configured to be connected in series to a power supply loop. The switch in the heating circuit is controlled to be on and off, so that the heating resistor is intermittently connected to and disconnected from the power supply loop. The switch may control, based on a power supply voltage provided by the power supply loop, turn-on time and turn-off time of a line between the power supply loop and the heating resistor in each switching cycle, to dynamically adjust an average heating power of the heating circuit.

公开(公告)号：US20240204682A1

公开(公告)日：2024-06-20

申请号：US18418431

申请日：2024-01-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhigang LIANG ,  Yuandong MENG ,  Tao ZENG ,  Lixia ZOU ,  Chao YAN

IPC: H02M7/219 ,  H02J7/02 ,  H02M1/44

CPC classification number: H02M7/219 ,  H02J7/02 ,  H02M1/44 ,  H02J2207/20

Abstract: When a voltage phase of an ith-phase rectifier circuit of the three-phase rectifier circuit precedes a current phase of the ith-phase rectifier circuit by a first angle, the controller controls a switch of the ith-phase rectifier circuit to be turned on within a second angle after a voltage of the ith-phase rectifier circuit reaches a zero crossing point, where the second angle is greater than or equal to the first angle; and when the current phase of the ith-phase rectifier circuit of the three-phase rectifier circuit precedes the voltage phase of the ith-phase rectifier circuit by the first angle, the controller controls the switch of the ith-phase rectifier circuit to be turned on within a third angle before the voltage of the ith-phase rectifier circuit reaches the zero crossing point, where the third angle is greater than or equal to the first angle.

公开(公告)号：US20220352849A1

公开(公告)日：2022-11-03

申请号：US17868105

申请日：2022-07-19

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianqiang WANG ,  Yuandong MENG ,  Song WAN ,  Yanzhong ZHANG

IPC: H02S50/15 ,  H02J3/00 ,  G06T7/00

Abstract: A photovoltaic string location update method and apparatus includes: obtaining, based on a physical map, a physical location of a first photovoltaic string corresponding to a first logical location in the physical map, the physical map indicating a correspondence between a logical location of a photovoltaic string and a physical location of the photovoltaic string, and the photovoltaic string includes the first photovoltaic string; and when the physical location of the first photovoltaic string in the physical map is different from a first actual physical location of the first photovoltaic string, updating the physical location of the photovoltaic string in the physical map to the first actual physical location, to obtain an updated physical map. The first actual physical location of the photovoltaic string is inconsistent with the physical location in the physical map, to prepare for subsequent operation and maintenance accurately performed on the photovoltaic string.

公开(公告)号：US20250121712A1

公开(公告)日：2025-04-17

申请号：US19002272

申请日：2024-12-26

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Ningbo FENG ,  Zhigang LIANG ,  Yuandong MENG

IPC: B60L53/20 ,  B60L1/00 ,  B60L53/16 ,  H02M7/219 ,  H02M7/5387

Abstract: An example on-board charger includes an insulating housing and an on-board charging device. In the on-board charging device, a bidirectional direct current conversion circuit is configured to receive a first direct current transmitted by a direct current bus, and output a second direct current through a power battery connection port to supply power to a power battery. A first bridge arm circuit is configured to receive an alternating current through an alternating current power supply input port, and output the first direct current. A second bridge arm circuit is configured to receive the first direct current and output a second alternating current through the alternating current load power supply port to supply power to the alternating current load.

公开(公告)号：US20240243604A1

公开(公告)日：2024-07-18

申请号：US18413345

申请日：2024-01-16

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Siwei YANG ,  Haibin GUO ,  Shaohui ZHONG ,  Yuandong MENG

IPC: H02J7/04 ,  H02M1/088 ,  H02M3/335

CPC classification number: H02J7/04 ,  H02M1/088 ,  H02M3/33573 ,  H02M3/33584 ,  H02J2207/20

Abstract: A power conversion circuit includes a controller, a first-level DC/DC conversion circuit, a plurality of second-level DC/DC conversion circuits, a switching module, a first capacitor, a plurality of second capacitors, and a battery. When a voltage of the battery is less than a first voltage threshold and voltages of the first capacitor and the second capacitor are less than a third voltage threshold, the controller controls the switching module to be turned off or turned on, so that the plurality of second-level DC/DC conversion circuits are connected in series; or when the voltage of the battery is greater than a second voltage threshold and voltages at two ends of the first capacitor and the second capacitor are less than the third voltage threshold, the controller controls the switching module to be turned off or turned on, so that the plurality of second-level DC/DC conversion circuits are connected in parallel.

公开(公告)号：US20220209710A1

公开(公告)日：2022-06-30

申请号：US17696555

申请日：2022-03-16

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Song WAN ,  Wuben SUN ,  Yuandong MENG ,  Zhigang WANG ,  Yanzhong ZHANG

IPC: H02S20/32 ,  H02S40/30

Abstract: A photovoltaic system includes a plurality of photovoltaic racks, a plurality of photovoltaic strings connected to each photovoltaic rack in the plurality of photovoltaic racks, a detector, and a controller. Each photovoltaic rack is configured to rotate by an angle through the controller. Each photovoltaic string is configured to convert light energy into electric energy. The detector is separately connected to the controller and the plurality of photovoltaic strings, and is configured to detect blocking parameters of the plurality of photovoltaic strings. The controller is connected to the plurality of photovoltaic racks, and is configured to: control, based on illumination angles, the plurality of photovoltaic racks to rotate by an angle, obtain a photovoltaic rack blocking relationship based on the blocking parameters of the plurality of photovoltaic strings, and adjust a rotation angle of a first photovoltaic rack or a second photovoltaic rack based on the photovoltaic rack blocking relationship.