公开(公告)号：US20240266966A1

公开(公告)日：2024-08-08

申请号：US18415297

申请日：2024-01-17

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Lin Du ,  Ping Li ,  Ningbo Feng ,  Tao Liang ,  Yuting Liu

IPC: H02M7/00 ,  B60L50/60 ,  B60L53/22 ,  H02M1/42 ,  H02M1/44 ,  H02M3/00 ,  H05K1/14 ,  H05K7/20

CPC classification number: H02M7/003 ,  B60L50/60 ,  B60L53/22 ,  H02M1/4266 ,  H02M1/44 ,  H02M3/003 ,  H05K1/14 ,  H05K7/209 ,  B60L2210/10 ,  B60L2210/30

Abstract: In accordance with an embodiment an apparatus, includes: a power conversion circuit having: a power port configured to receive power from an external power supply, a first direct current port configured to output a first direct current, a second direct current port configured to output a second direct current, wherein a voltage of the second direct current port is configured to be higher than a voltage of the first direct current port, an upper-layer printed circuit board (PCB) electrically connected to the second direct current port, and a lower-layer PCB electrically connected to the first direct current port and to the power port; a bottom housing; and a heat sink, wherein the lower-layer PCB, the upper-layer PCB, and the heat sink are sequentially stacked in and fastened to the bottom housing.

公开(公告)号：US12051966B2

公开(公告)日：2024-07-30

申请号：US17710676

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chen Chen ,  Bin Ma ,  Weiping Liu ,  Zhaoxue Cui

IPC: H02M1/32 ,  B60L53/22 ,  H02M7/12 ,  H02M7/797 ,  H02H9/04

CPC classification number: H02M1/32 ,  B60L53/22 ,  H02H9/047 ,  H02M7/125 ,  H02M7/797

Abstract: A converter for avoiding a short-circuit fault of the converter while inhibiting a surge impact includes: a power factor correction (PFC) circuit, a surge protection circuit, and a switch circuit. The PFC circuit is configured to: convert a first component of a first alternating current received by an alternating current terminal of the PFC circuit into a first direct current, and output the first direct current through a direct current terminal of the PFC circuit; and convert a second direct current received by the direct current terminal of the PFC circuit into a second alternating current, and output the second alternating current through the alternating current terminal of the PFC circuit.

公开(公告)号：US12047025B2

公开(公告)日：2024-07-23

申请号：US18149261

申请日：2023-01-03

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yue Chen ,  Xueliang Zhang ,  Ningbo Feng

IPC: H02P27/08 ,  H02M3/00 ,  H02M3/335

CPC classification number: H02P27/08 ,  H02M3/01 ,  H02M3/335

Abstract: An electric drive system is connected to a power battery pack to drive a motor, the motor includes an exciting winding, and the electric drive system includes a bus, a three-level inverter circuit, an electric excitation circuit, and a controller. The bus includes a positive bus and a negative bus. The three-level inverter circuit includes a first bus capacitor and a second bus capacitor. The first bus capacitor is connected between the positive bus and a bus midpoint, and the second bus capacitor is connected between the negative bus and the bus midpoint. A first input terminal of the electric excitation circuit is connected in parallel to the first bus capacitor, a second input terminal of the electric excitation circuit is connected in parallel to the second bus capacitor, and an output terminal of the electric excitation circuit is connected to the exciting winding of the motor.

公开(公告)号：US20240244802A1

公开(公告)日：2024-07-18

申请号：US18411345

申请日：2024-01-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yuting LIU ,  Lin DU ,  Shaolong LIU

IPC: H05K7/20 ,  B60L53/22 ,  H05K5/00

CPC classification number: H05K7/20854 ,  B60L53/22 ,  H05K5/0047

Abstract: A vehicle-mounted power supply apparatus and a vehicle. The vehicle-mounted power supply apparatus includes a power conversion circuit, an upper-layer PCB board, a lower-layer PCB board, a bottom cover, and a radiator. The upper-layer PCB board and the lower-layer PCB board are configured to bear a plurality of power switching transistors of the power conversion circuit, so that the power conversion circuit is distributed more flexibly. The lower-layer PCB board and a plurality of transformers are fastened to a bottom plate of the bottom cover, and cooled by heat dissipation through a lower-layer cooling channel in the bottom cover. The upper-layer PCB board and the radiator are sequentially stacked above the lower-layer PCB board and the plurality of transformers, and cooled by heat dissipation through an upper-layer cooling channel in the radiator.

公开(公告)号：US20240243577A1

公开(公告)日：2024-07-18

申请号：US18413296

申请日：2024-01-16

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Koujie DONG ,  Guozhuang BAI ,  Yi CAI ,  Huanmao XIE

IPC: H02J3/00 ,  H02J3/14 ,  H02J3/46

CPC classification number: H02J3/0075 ,  H02J3/144 ,  H02J3/46 ,  H02J2300/24

Abstract: A power conversion device includes a power conversion device includes an auxiliary power supply, a first load, a power conversion circuit, and a controller. When an output voltage of the auxiliary power supply in operation is greater than or equal to a first voltage threshold, the controller controls the first load to be connected to the power conversion device, so that the output voltage of the auxiliary power supply decreases. When the output voltage of the auxiliary power supply is greater than or equal to a second voltage threshold after the first load is connected to the power conversion device, the controller controls the first load to be disconnected from the power conversion device, and controls the output voltage of the auxiliary power supply to be a first target output voltage. The first voltage threshold is less than the second voltage threshold.

公开(公告)号：US12038082B1

公开(公告)日：2024-07-16

申请号：US18339394

申请日：2023-06-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wenwu Ma ,  Yi Cao ,  Maojie Ren ,  Jinsong Zhang

IPC: F16H57/04 ,  B60K1/00 ,  F16H57/02

CPC classification number: F16H57/0476 ,  B60K1/00 ,  F16H57/0436 ,  F16H2057/02034 ,  F16H2057/02043 ,  F16H57/0486

Abstract: A control method and apparatus may be applied to an electric drive system. The electric drive system includes an oil pump, a motor, a reducer, and a housing, the motor and the reducer are disposed in the housing, lubricating oil is stored in the housing, and the oil pump is configured to pump the lubricating oil. The method includes: obtaining a first rotational speed of the motor, a second rotational speed of the oil pump, and a temperature of the lubricating oil in the housing; and controlling a rotational speed of the oil pump to be a third rotational speed based on the first rotational speed, the second rotational speed, and the temperature. In this way, the rotational speed of the oil pump can be adjusted to change liquid levels of the lubricating oil in a cavity and oil pump power at different rotational speeds of the oil pump.

公开(公告)号：US20240235252A9

公开(公告)日：2024-07-11

申请号：US18401455

申请日：2023-12-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shijiang Yu ,  Zhipeng Wu ,  He Zhou ,  Lei Shi ,  Yang Hu

IPC: H02J9/06 ,  H02J3/00 ,  H02J3/32 ,  H02J7/35

CPC classification number: H02J9/068 ,  H02J3/0012 ,  H02J3/32 ,  H02J7/35 ,  H02J9/061 ,  H02J2207/20 ,  H02J2300/24

Abstract: This disclosure provides an energy storage apparatus, an energy storage apparatus control method, and a photovoltaic system. The energy storage apparatus includes: a plurality of battery clusters, a plurality of conversion units, a start unit, and a controller. The controller includes a plurality of control units. The start unit is configured to: after receiving a start signal, control a control switch in at least one battery cluster to close, to start a control unit corresponding to the battery cluster. The control unit is configured to: determine, based on a state of the control switch in the battery cluster, whether a black start mode is on; and when determining that the black start mode is on, control a DC-DC converter in the corresponding conversion unit to release electric energy stored in a battery pack in the corresponding battery cluster, to energize a direct current bus.

公开(公告)号：US20240235250A9

公开(公告)日：2024-07-11

申请号：US18489810

申请日：2023-10-18

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Zhou SHU ,  Xiangbiao PENG

IPC: H02J9/06

CPC classification number: H02J9/062

Abstract: Example control methods and apparatus are described. An example control method for an uninterruptible power supply system includes: when a bypass power supply branch supplies power to a load, outputting a first drive signal to a first switch device and outputting a second drive signal to a second switch device; and controlling the first drive signal and the second drive signal to have a phase difference with an input voltage of the bypass power supply branch; or when a load current of the bypass power supply branch is less than a first threshold, outputting an inverter control signal to control an inverter power supply branch to charge an energy storage battery; or when a current of the inverter power supply branch flows back to an input end of the bypass power supply branch, turning off the first switch device and the second switch device via the inverter power supply branch.

公开(公告)号：US20240227600A1

公开(公告)日：2024-07-11

申请号：US18612537

申请日：2024-03-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ziming DENG ,  Zezhou YANG ,  Yuanning HE ,  Zhanlin REN ,  Wei GUO ,  Wanxiang YE

IPC: B60L53/50 ,  B60L53/30

CPC classification number: B60L53/50 ,  B60L53/30

Abstract: A charging system includes n first charging modules, a first switch matrix, a second switch matrix, and m first output apparatuses. Each first charging module includes a plurality of first power converters, each first power converter has one output bus, the output bus of the first power converter is connected to the first switch matrix. The first switch matrix is configured to connect or disconnect output buses of any two of the plurality of first power converters. The first output apparatus j is connected to a corresponding first charging module by using the second switch matrix. The second switch matrix is configured to transmit, to the first output apparatus j, electric energy on an output bus of a first power converter in any first charging module corresponding to the first output apparatus j.

公开(公告)号：US12021390B2

公开(公告)日：2024-06-25

申请号：US18145830

申请日：2022-12-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Min Liu ,  Shuchao Wang ,  Yao Chang ,  Song Wan

IPC: H02J3/46

CPC classification number: H02J3/466 ,  H02J2300/26

Abstract: This application discloses a photovoltaic station and a power coordination method for a photovoltaic station. Sample inverters are disposed in arrays requiring power adjustment in the photovoltaic station. Real-time active power of sample inverters in each array is obtained. Then, an available active capacity and an available reactive capacity of the array and available active capacities and available reactive capacities of all the arrays requiring power adjustment are obtained based on the real-time active power of the sample inverters. Finally, active power and reactive power of the photovoltaic station are separately allocated to the N arrays based on the available active capacities and the available reactive capacities respectively corresponding to the N arrays. Because the sample inverters come from the arrays requiring power adjustment, differences between inverters and differences between the arrays can be fully exploited, and the available active capacities of the arrays can be more accurately obtained by using the sample inverters. Therefore, a more accurate available power capacity of the photovoltaic station is obtained by using relatively accurate available active capacities.