公开(公告)号：US20230226919A1

公开(公告)日：2023-07-20

申请号：US18151610

申请日：2023-01-09

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Jiqing DOU ,  Quanwu WANG ,  Ningbo FENG ,  Bing CHEN ,  Ping LI

IPC: B60L3/00 ,  B60L53/20 ,  H02H7/12

CPC classification number: B60L3/0069 ,  B60L53/20 ,  H02H7/1213 ,  B60L2210/10 ,  B60L53/16

Abstract: An electric power conversion system and a vehicle, to improve vehicle availability. The electric power conversion system may receive electric energy provided by a first power supply, and supply power to at least one load module. The system may include a first direct current to direct current conversion module and a second direct current to direct current conversion module. The first direct current to direct current conversion module is configured to perform voltage conversion processing on the electric energy and provide the electric energy to the at least one load module. The second direct current to direct current conversion module is configured to perform voltage conversion processing on the electric energy and provide the electric energy to the at least one load module.

公开(公告)号：US20250100408A1

公开(公告)日：2025-03-27

申请号：US18897711

申请日：2024-09-26

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Fanyu MENG ,  Yaqi HUANG ,  Jiqing DOU ,  Tao LIANG

IPC: B60L53/22 ,  B60L1/00 ,  B60L58/20 ,  H02J1/08

Abstract: This application provides an on board power supply apparatus and an electric vehicle, which effectively resolves problems of easy damage to a switch circuit and a waste of electrical energy due to repeated turn-on of the switch circuit. The on board power supply apparatus includes a first power conversion circuit and a switch module. The switch module includes a driver, a switch assembly, and a latch circuit. A low-voltage load is configured to receive the low-voltage direct current or receive an output voltage of a low-voltage power supply through the switch assembly. When the low-voltage power supply supplies power to the low-voltage load through the switch assembly, in response to a turn-off signal output by the latch circuit, the driver controls the switch assembly to break a connection between the low-voltage power supply and the low-voltage load until the latch circuit stops outputting the turn-off signal.