公开(公告)号：US20220263324A1

公开(公告)日：2022-08-18

申请号：US17627483

申请日：2020-07-16

申请人： Huawei Technologies Co., Ltd.

发明人： Ni Sun ,  Chunjiang Zhao ,  Chengxu Zhang ,  Jianwei Zhu

IPC分类号： H02J7/00

摘要： This application provides a power supply system for a terminal device, and a chip, and relates to the charging field. The power supply system includes a battery pack, a bypass circuit, a voltage step-down circuit, and a controller. The battery pack includes at least two batteries. The controller is configured to: when the batteries in the battery pack need to be switched to a series mode, control the voltage step-down circuit to work and control the bypass circuit to stop working, and is further configured to: when the batteries in the battery pack need to be switched to a parallel mode, control the bypass circuit to work and control the voltage step-down circuit to stop working. In the system, switching between the series mode and the parallel mode can be automatically implemented based on an actual situation, so that endurance and stability of the terminal device are improved.