Charging Method and Charger

摘要

A charging method and a charger are provided that relate to the field of electronics, and can adjust a charging current of the charger in real time and avoid a short circuit of the charger. The method in the present invention includes setting a multi-level charging current; when a terminal is charged at a present charging current, acquiring a real-time charging voltage corresponding to the present charging current; determining whether a difference between the real-time charging voltage corresponding to the present charging current and an ideal charging voltage exceeds a voltage drop threshold; when the difference does not exceed the voltage drop threshold, boosting a charging current to a next-level charging current; and when the difference exceeds the voltage drop threshold, reducing the charging current to a previous-level charging current, so as to select an appropriate charging current to charge the terminal.

主权项

1. A charging method, comprising:
acquiring a real-time charging voltage corresponding to a present charging current when a terminal is charged at the present charging current; determining whether a difference between the real-time charging voltage corresponding to the present charging current and an ideal charging voltage exceeds a preset voltage drop threshold, wherein the ideal charging voltage is an electromotive force provided by a charging power supply when a charging circuit is not connected to load, and the voltage drop threshold is a maximum divided voltage generated when a maximum load current of a charger passes an internal resistor of the charger; reducing a charging current to a previous-level charging current of the present charging current such that the terminal is charged at the previous-level charging current when the difference between the real-time charging voltage corresponding to the present charging current and the ideal charging voltage exceeds the voltage drop threshold; and boosting the charging current to a next-level charging current of the present charging current such as to continue to determine whether the difference between the real-time charging voltage and the ideal charging voltage exceeds the voltage drop threshold when the difference between the real-time charging voltage corresponding to the present charging current and the ideal charging voltage does not exceed the voltage drop threshold, and continuing to boost the charging current to the highest-level charging current when the difference does not exceed the voltage drop threshold.