公开(公告)号：US20220214408A1

公开(公告)日：2022-07-07

申请号：US17566291

申请日：2021-12-30

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Lei ZHOU ,  Xiaoqiu LI

IPC: G01R31/69 ,  B60L53/16 ,  B60L53/66

Abstract: A plug status detection circuit, a controller, and a vehicle are provided, to detect a plug status in different standards by using one detection circuit. The plug status detection circuit includes a wake-up circuit and a sampling circuit. The wake-up circuit is configured to immediately output or delay outputting a wake-up signal based on a resistance value of a connected resistor of the plug status detection circuit when a plug is connected to a socket, where the wake-up signal is used to trigger a CPU to drive the sampling circuit. The sampling circuit is configured to inject a startup voltage under the drive of the CPU, and after the startup voltage is injected, a level of a detection point of the sampling circuit is used to indicate a plug status.

公开(公告)号：US20220250494A1

公开(公告)日：2022-08-11

申请号：US17733824

申请日：2022-04-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Bin MA ,  Xiaoqiu LI ,  Chen CHEN

IPC: B60L53/22 ,  B60L58/12 ,  B60L53/53

Abstract: This application provides a wake-up circuit for a charge controller which includes a first-stage charging circuit and a second-stage charging circuit. The first-stage charging circuit includes a first capacitor. When an input terminal of the first-stage charging circuit receives a high level signal and the first capacitor is in a partially charged state, the first-stage charging circuit charges the first capacitor and outputs a first charging voltage to the second-stage charging circuit. When the input terminal of the first-stage charging circuit receives a low level signal, the first-stage charging circuit discharges the first capacitor. The second-stage charging circuit includes a second capacitor. When the second-stage charging circuit receives the first charging voltage output by the first-stage charging circuit, the second-stage charging circuit charges the second capacitor and outputs a wake-up signal to the charge controller. This application can increase a scenario coverage of the wake-up circuit to ensure high applicability.