公开(公告)号：US20230179011A1

公开(公告)日：2023-06-08

申请号：US18161252

申请日：2023-01-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tao Liang ,  Weiping Liu ,  Ren Liu ,  Dong Li

IPC: H02J7/34 ,  H02M1/32 ,  H02M1/36 ,  H02J7/00

CPC classification number: H02J7/345 ,  H02M1/32 ,  H02M1/36 ,  H02J7/0013 ,  H02J2207/20 ,  H02J2207/50 ,  B60L2210/10 ,  B60L3/04

Abstract: Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor.

公开(公告)号：US12244170B2

公开(公告)日：2025-03-04

申请号：US18161252

申请日：2023-01-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tao Liang ,  Weiping Liu ,  Ren Liu ,  Dong Li

IPC: H02J7/34 ,  H02J7/00 ,  H02M1/32 ,  H02M1/36 ,  B60L3/04

Abstract: Embodiments of this application provide a voltage conversion circuit, a control method, a DC/DC converter and a device. The voltage conversion circuit includes a failure isolation module, a soft start module, and a voltage conversion module. The voltage conversion module includes an output filter capacitor. Both a first terminal of the failure isolation module and a first terminal of the soft start module are connected to a positive electrode of a first battery, both a second terminal of the failure isolation module and a second terminal of the soft start module are connected to a first terminal of the output filter capacitor, and a second terminal of the output filter capacitor is connected to a negative electrode of the first battery. The soft start module is configured to connect the first battery and the output filter capacitor, so that the first battery charges the output filter capacitor.

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.