公开(公告)号：US12040699B2

公开(公告)日：2024-07-16

申请号：US17862462

申请日：2022-07-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jie Ren

IPC: H02M1/42 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M1/4233 ,  H02M1/0009 ,  H02M1/08

Abstract: A drive controller is used in a control system of a power factor correction (PFC) circuit. The control system further includes the PFC circuit. The PFC circuit includes a first bridge arm, a second bridge arm, a first switching transistor, and a second switching transistor. The driving controller includes a sampling circuit and a driving circuit. The sampling circuit is configured to obtain a target current value between the first switching transistor and the second switching transistor. The drive circuit is configured to turn off gate inputs of the first switching transistor and the second switching transistor when the target current value is greater than a current threshold, to turn off the first switching transistor and the second switching transistor and protect the control system.

公开(公告)号：US20240235423A9

公开(公告)日：2024-07-11

申请号：US18489576

申请日：2023-10-18

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Yunyu TANG ,  Lei SHI ,  Yaojia ZHANG ,  Dong CHEN ,  Kai XIN

IPC: H02M7/5387 ,  H02M1/00

CPC classification number: H02M7/53871 ,  H02M1/0054

Abstract: This application describes examples of a grid-tied inverter apparatus and a grid-tied control method. In one example, the grid-tied inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of power switching transistors based on an output current value of the inverter apparatus, to adjust a resonance frequency of the filter circuit through different resonant branches, so that the resonance frequency meets a grid-tied requirement.

公开(公告)号：US20240235378A1

公开(公告)日：2024-07-11

申请号：US18614196

申请日：2024-03-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wenbin Hou ,  Xiaoqiu Li ,  Yanjun Hu

IPC: H02M1/32 ,  B60L53/60 ,  H02J7/00 ,  H02M1/42 ,  H02M3/335

CPC classification number: H02M1/322 ,  B60L53/60 ,  H02J7/0063 ,  H02M1/4233 ,  H02M3/33573 ,  H02M3/33576 ,  B60L2210/10

Abstract: This application discloses a bus capacitor discharging method and a related device thereof. The discharging method is applicable to a DC/DC converter, and the DC/DC converter includes a chopper unit, a transformer, and a rectifier unit. A bus capacitor is coupled to the chopper unit, the chopper unit is coupled to a primary side of the transformer, a secondary side of the transformer is coupled to the rectifier unit, and the chopper unit and the rectifier unit are both coupled to a controller. During specific implementation, when determining to discharge the bus capacitor, the controller may control the rectifier unit to short-circuit the secondary side of the transformer, and control the chopper unit to close a loop formed between the bus capacitor and the primary side of the transformer.

公开(公告)号：US12034279B2

公开(公告)日：2024-07-09

申请号：US17405787

申请日：2021-08-18

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Cheng Ma ,  Xiaoke Ran ,  Hongbing Wang ,  Wei Guo

IPC: H02B1/20 ,  H02J5/00 ,  H02M7/04

CPC classification number: H02B1/20 ,  H02J5/00 ,  H02M7/04

Abstract: A power conversion apparatus includes M first slots, wherein each of M first slots is electrically connected to an input side of one of N first bus bars, and a respective first slot of the M first slots is electrically connected to a first module that can supply an alternating current or a direct current to the first bus bar electrically connected to the first slot. The apparatus further includes P second slots, wherein each of the P second slots is electrically connected between an output side of one of the N first bus bars and an input side of one of second bus bars, and a respective second slot of the P second slots is electrically connected to a second module that converts an alternating current into a direct current or that converts a direct current into a direct current.

公开(公告)号：US20240213783A1

公开(公告)日：2024-06-27

申请号：US18393156

申请日：2023-12-21

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Mingxuan Dong ,  Shuo Wang ,  Jie Chen ,  Wenchao Li ,  Mingquan Zhao ,  Kai Xin

IPC: H02J3/38 ,  H02J3/32 ,  H02J3/46

CPC classification number: H02J3/381 ,  H02J3/32 ,  H02J3/46 ,  H02J2300/24

Abstract: This application provides an inverter, a power grid power supply system, and a method for controlling an excitation inrush current. The controller adjusts the output voltage of the conversion circuit based on a first phase that is of the output voltage of the conversion circuit and that is during reduction of the output voltage, the magnetic flux of the iron core in the transformer, an output voltage that is of the conversion circuit and that is after the output voltage is reduced, and the target voltage value, so as to increase the output voltage of the conversion circuit and keep the magnetic flux of the iron core less than the saturation magnetic flux.

公开(公告)号：US20240208344A1

公开(公告)日：2024-06-27

申请号：US18599783

申请日：2024-03-08

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Baoquan LIU ,  Quanxi LIN ,  Fei NING ,  Minggui HU

IPC: B60L53/302 ,  F25B41/20 ,  F25B41/40 ,  F25B49/02

CPC classification number: B60L53/302 ,  F25B41/20 ,  F25B41/40 ,  F25B49/022 ,  F25B49/027 ,  F25B2600/2515 ,  F25B2700/21

Abstract: A refrigerating system include a heat management module, a direct cooling module, a plurality of heat exchange modules, and a plurality of cooling pipes. The heat management module may send, to the direct cooling module, control information that indicates that the charging pile needs to charge a terminal device. The direct cooling module may be configured to convert a gas refrigerant transmitted in a second pipe assembly into a liquid refrigerant, and transmit the liquid refrigerant to each heat exchange module and each cooling pipe through the first pipe assembly.

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：US20240200669A1

公开(公告)日：2024-06-20

申请号：US18536558

申请日：2023-12-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Linfeng LU ,  Malin LI ,  Hao MENG ,  Tao HUANG

IPC: F16K11/07 ,  B60K11/02 ,  F16K27/00

CPC classification number: F16K11/0716 ,  B60K11/02 ,  F16K27/003 ,  F16K27/042

Abstract: A temperature control system. The temperature control system includes a plurality of liquid pipelines and a multi-port valve. The multi-port valve includes a valve body and a valve core. The valve body has a mounting cavity, and the valve core is mounted in the mounting cavity. The valve body includes a body and a block-shaped additional portion, the mounting cavity is located on the body, and the block-shaped additional portion is attached to at least a part of a side wall of the body. The valve body includes a plurality of vias, and each via penetrates the block-shaped additional portion and a corresponding side wall of the body. Each liquid pipeline is configured to communicate with one via, there is a battery pack on at least one liquid pipeline, and the temperature control system is configured to control a temperature of the battery pack.

公开(公告)号：US20240195207A1

公开(公告)日：2024-06-13

申请号：US18587553

申请日：2024-02-26

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Qing BIAN ,  Wenbin CHEN

IPC: H02J7/35 ,  H02J3/32 ,  H02J3/38 ,  H02J7/00

CPC classification number: H02J7/35 ,  H02J3/32 ,  H02J3/381 ,  H02J7/0024 ,  H02J2207/20 ,  H02J2300/24

Abstract: Examples of a flipped conversion circuit and a photovoltaic power generation system are described. In one example, a flipped conversion circuit includes a plurality of connection ends, a half-bridge switch unit, an output capacitor unit, a resonant unit, a series diode unit, an energy storage switch unit, an input unit, an output unit, and a controller. The energy storage switch unit includes at least one switch device and a first diode, and the at least one switch device is connected to the first diode in series. The controller is configured to convert, by controlling the switch device in the half-bridge switch unit and the switch device in the energy storage switch unit to be turned on or turned off, a first voltage that is input by the input unit into a second voltage, so that the output unit outputs the second voltage.

公开(公告)号：US20240186812A1

公开(公告)日：2024-06-06

申请号：US18503255

申请日：2023-11-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jianhua ZHU ,  Mugui ZHENG ,  Yong HUANG ,  Junlin HU

IPC: H02J7/00

CPC classification number: H02J7/00714 ,  H02J7/0013 ,  H02J7/0048 ,  H02J7/005 ,  H02J7/0063

Abstract: A power supply management system includes a monitoring module and a plurality of battery modules. The battery module includes a BMS, a DC/DC converter, and a plurality of battery packs. When the battery packs of the plurality of battery modules are charged or discharged by using the DC/DC converter, the monitoring module may detect charge/discharge rates of the battery modules, and when the charge/discharge rates of the battery modules are less than a specified threshold, control a part of battery modules that are being charged or discharged to stop being charged or discharged. After a quantity of battery modules that are being charged or discharged is decreased, the charge/discharge rates are increased.