Huawei Device Co., Ltd.

Huawei Technologies Co., Limited

Lixiang Zheng

Yanguo He

Fengxin Wang

Shengcai Liu

Changqi Li

Wanbao Peng

Yanfeng Zhao

A self-loop detection method for a charging device includes switching a positive signal cable Dand a negative signal cable Dfrom a connected state to a disconnected state; and detecting whether a positive signal cable Dand a negative signal cable Dare switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.

Self-loop detection method and apparatus for charging device

A power supply terminal, and a charging control method are disclosed. The power supply terminal includes a USB port, a switch, a power source module, and a processor, where the USB port is configured to connect to a power receiving terminal; one end of the power source module is connected to a power source pin VBUS of the USB port and is configured to charge the power receiving terminal by using the power source pin VBUS; a first end of the switch is connected to the data pin D+ and a second end of the switch is connected to the data pin D&#x2212;; when the switch is on and the processor detects that a drop amplitude of the output voltage of the power source module exceeds a preset value, in a process in which the power source module outputs a voltage to charge the power receiving terminal.

Systems and methods for charging via USB port

A mobile power supply terminal and a power supply method is presented. For the mobile power supply terminal, a trigger circuit and a control circuit are added to a conventional device. After a to-be-charged device is connected to the mobile terminal, one end of a power supply interface generates a level signal, to make the trigger circuit generate a trigger signal; and then the control circuit controls, according to the trigger signal, the mobile power supply terminal to enter a power supply mode, and controls a power supply source to charge the to-be-charged device using the power supply interface.

Mobile power supply terminal and power supply method thereof

Growing community of inventors

Xi'an, China

Lixiang Zheng