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：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：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：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：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：US20220271562A1

公开(公告)日：2022-08-25

申请号：US17743294

申请日：2022-05-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wanxiang YE ,  Zehua LIANG ,  Yanxing YANG ,  Wei GUO ,  Zezhou YANG

IPC: H02J9/06

Abstract: In the power source switching control system, a circuit breaker includes a controller and an on/off apparatus. The controller controls, based on a signal of a monitor, the on/off apparatus to adjust an on/off state of a power source connected to the circuit breaker, that is, adjust, from an on state to an off state based on a switch-off signal of the monitor, a working power source that is currently working, and adjust a backup power source from an off state to an on state based on a switch-on signal of the monitor, to implement a process of power source switching between the working power source and the backup power source.