公开(公告)号：US20220216817A1

公开(公告)日：2022-07-07

申请号：US17703810

申请日：2022-03-24

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yuan ZHOU ,  Bucheng JI ,  Xing ZHANG ,  Zhengqiang ZHANG

IPC: H02P27/08 ,  H02M7/5387

Abstract: This application provides a power supply system of a motor control module and a vehicle. The power supply system includes a first current limiting unit and an isolation unit. An output end of a first direct current power supply is coupled to a first input end of the isolation unit to form a first power supply loop with the isolation unit. A first output end of a second direct current power supply is coupled to one end of the first current limiting unit. The other end of the first current limiting unit is coupled to a second input end of the isolation unit to form a second power supply loop with the isolation unit. The second power supply loop is connected in parallel to the first power supply loop.

公开(公告)号：US20220203864A1

公开(公告)日：2022-06-30

申请号：US17680775

申请日：2022-02-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xuejuan KONG ,  Yunwu ZHAO ,  Xing ZHANG

IPC: B60L58/13 ,  G01R31/3835 ,  B60L3/00 ,  G01R19/165

Abstract: This application discloses a voltage monitoring method, a voltage monitoring apparatus, and an electric vehicle. The voltage monitoring apparatus includes a power conversion module and a microcontroller electrically connected to the power conversion module. The power conversion module is configured to output a voltage. The microcontroller includes an ADC module, a monitoring module, and an IO module. The ADC module is configured to obtain an output voltage of the power conversion module, and determine whether the output voltage encounters an exception. The monitoring module is configured to: when the output voltage encounters an exception, output a control signal through the IO module. The power conversion module correspondingly stops outputting a voltage based on the control signal. Based on this, diagnostic coverage of the power conversion module can reach 99% for a single-point fault metric, thereby meeting a requirement of a corresponding level of ASIL D.