公开(公告)号：US20250023460A1

公开(公告)日：2025-01-16

申请号：US18902523

申请日：2024-09-30

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Xiaolu HU ,  Zezhou YANG ,  Liqiong YI ,  Shaoxian CHEN

IPC: H02M1/42 ,  H02H7/125 ,  H02M1/00

Abstract: A power control circuit includes an alternating current power supply module, a power module, and a controller. The power module includes a bridgeless power factor correction circuit. A sampling apparatus in the alternating current power supply module samples a current signal output by an alternating current power supply or the power module, and outputs an obtained sampled signal to the controller. The controller controls on and off of a switch element in the alternating current power supply module based on the received sampled signal, and the controller switches off the switch element when the sampled signal includes a lightning surge signal. In addition, the controller is further configured to perform current metering on the sampled signal.

公开(公告)号：US20230136512A1

公开(公告)日：2023-05-04

申请号：US18147177

申请日：2022-12-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shu ZHONG ,  Zejie LV ,  Liqiong YI ,  Denghai PAN ,  Yuping QIU ,  Zezhou YANG

IPC: H02M3/00 ,  H02M3/335

Abstract: A resonant converter and a voltage conversion method. The resonant converter includes a high-frequency inversion circuit, an inductor-inductor-capacitor (LLC) resonant tank network, and a hybrid rectification circuit. The LLC resonant tank network is separately coupled to the high-frequency inversion circuit and the hybrid rectification circuit. The high-frequency inversion circuit is configured to convert a first direct current voltage into a first alternating current voltage. The LLC resonant tank network is configured to adjust the first alternating current voltage to obtain a second alternating current voltage.

公开(公告)号：US20220352713A1

公开(公告)日：2022-11-03

申请号：US17865656

申请日：2022-07-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zezhou YANG ,  Xiaoke RAN ,  Wanxiang YE ,  Liqiong YI

IPC: H02H11/00

Abstract: A reverse power connection preventing circuit includes a diode and an actuation unit that are connected in series between a positive input terminal and a negative input terminal of a circuit breaker. A positive electrode of the diode points to the negative input terminal of the circuit breaker, and a negative electrode of the diode points to the positive input terminal of the circuit breaker. When a power supply is forward connected to the circuit breaker, the diode is cut off, there is no current on the actuation unit, and the reverse power connection preventing circuit is in a power-off state. When the power supply is reversely connected to the circuit breaker, the diode conducts, and the actuation unit is configured to prevent closing of the circuit breaker, and/or the actuation unit is configured to perform an alarm prompt, to perform an early warning.

公开(公告)号：US20230154671A1

公开(公告)日：2023-05-18

申请号：US18150995

申请日：2023-01-06

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zezhou YANG ,  Liqiong YI ,  Shu ZHONG ,  Baoguo CHEN ,  Xiaolu HU

IPC: H01F27/30 ,  H01F27/28 ,  H01F3/14 ,  H02M1/00 ,  H02M3/335

CPC classification number: H01F27/306 ,  H01F27/2804 ,  H01F3/14 ,  H02M1/0064 ,  H02M3/33569 ,  H01F2038/006

Abstract: A matrix transformer, a power converter, and a matrix transformer winding arrangement method. Each of the magnetic core columns of n sub-transformers of the matrix transformer is wound with a first winding and a second winding, first windings are used to form a high-voltage-side winding of the matrix transformer, and second windings are used to form a low-voltage-side winding of the matrix transformer. A ratio of a turn quantity design value of the high-voltage-side winding to the quantity n of the sub-transformers is not an integer.

公开(公告)号：US20240364212A1

公开(公告)日：2024-10-31

申请号：US18768559

申请日：2024-07-10

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Liqiong YI ,  Zezhou YANG ,  Dibin ZHOU

IPC: H02M1/42 ,  H02M1/00 ,  H02M3/00

CPC classification number: H02M1/4241 ,  H02M1/007 ,  H02M1/4216 ,  H02M3/003 ,  H02M3/01

Abstract: A power conversion circuit and an electronic device. After circuit units that each are in a resonant circuit of the power conversion circuit, and that each include a resonant capacitor and/or a resonant inductor, are connected in series in a triangle connection. When it can be ensured that the circuit units connected in series in the triangle connection and the circuit units connected in series in a star connection relationship provide a same resonant frequency, a capacitance value of the resonant capacitor is reduced, and/or current stress of the resonant capacitor and/or current stress of the resonant inductor are/is reduced.

公开(公告)号：US20240166067A1

公开(公告)日：2024-05-23

申请号：US18431146

申请日：2024-02-02

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Yuanning HE ,  Ping KUANG ,  Liqiong YI ,  Xinru HAN ,  Yichang WANG ,  Quanxi LIN

IPC: B60L53/31 ,  B60L53/16 ,  B60L53/67

CPC classification number: B60L53/31 ,  B60L53/16 ,  B60L53/67

Abstract: A charging system may include a plurality of power modules, a distributing switch module, and a plurality of charging ports. The distributing switch module includes a first distributing unit and a second distributing unit. The first distributing unit may connect a first part of power modules in the plurality of power modules to a first charging port, to distribute powers of the first part of power modules to the first charging port. The second distributing unit may connect a second part of power modules in the plurality of power modules to a second charging port, to distribute powers of the second part of power modules to the second charging port. Therefore, the first charging port may charge a first terminal, and the second charging port may charge a second terminal.