Huawei Technologies Co., Limited

Honor Device Co., Ltd.

Fenwei Zhang

Yupeng Qiu

Chunjiang Zhao

Haibin Zhou

Ruiliang Li

Yajun Pan

Haitao Tian

A power supply circuit of a terminal device includes a voltage boost circuit, a battery chip, and a controller. The battery chip is configured to provide an output voltage of a battery for a load. An input end of the voltage boost circuit is connected to a positive electrode of the battery, and an output end of the voltage boost circuit is connected to the load. The output voltage of the battery is boosted when the temperature is relatively low or the output voltage of the battery is relatively low. In addition, when a relatively high pulse current occurs on the terminal and the output voltage of the voltage boost circuit is stepped down, both the battery chip and the voltage boost circuit is controlled to supply power to the load.

Power supply circuit of terminal device, terminal device, and power supply method

A terminal obtains a parameter from a charger, including at least one of an input voltage value and an output current value of the charger and a temperature value of a charging output port of the charger. When a parameter value is greater than a threshold, the terminal terminates a charging process based on a relationship between a corresponding threshold and at least one of a difference between the output current value of the charger and an input current value of the terminal, a power loss from the charger to the terminal, and a temperature value.

Charging protection method, terminal, and charger

The present disclosure relates to a method for checking a charging parameter. The method includes: after a communication channel between a terminal and a charger is successfully established, reading, by the terminal, charging capability information of the charger in a preset manner; comparing a maximum capability value of the charger for each preset charging parameter with a target value that is corresponding to a corresponding preset charging parameter and that is stored in the terminal, and determining a minimum value as a first configuration value for the corresponding preset charging parameter; writing, into the charger, the first configuration value that is obtained by means of comparison and that is for each preset charging parameter; reading a second configuration value of the charger for each preset charging parameter; and sending, by the terminal, a charging acknowledgment instruction to the charger after determining that all preset charging parameters are successfully configured.

Method and device for checking charging parameter, and charger

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Beijing, China

Fenwei Zhang