Power adapter, terminal, and method for processing impedance anomalies in charging circuit

A power adapter comprising a power conversion component and a charging interface, the power conversion component being configured to form a charging loop with a terminal via the charging interface to charge a battery of the terminal, wherein, the power adapter further comprises:

• a detection component, a communication component and an anomaly processing component, wherein
• the detection component is configured to detect an output voltage of the power adapter when the power adapter charges the terminal;
• the communication component is configured to send voltage indication information to the terminal, the voltage indication information indicating the output voltage of the power adapter detected by the detection component,
• and to receive charging protection indication information from the terminal if the terminal determines that an impedance of the charging loop is abnormal based on a difference between an input voltage of the power adapter and the output voltage of the power adapter;
• and
• the anomaly processing component is configured to control the charging loop to enter into a protected state according to an indication of the charging protection indication information the indication of the charging protection indicative information indicating a protection state corresponding to a level of the impedance determined according to the difference.

A method for processing an impedance anomaly of a charging loop, comprising:

• receiving, by a terminal, voltage indication information from a power adapter when the power adapter charges the terminal, the voltage indication information indicating an output voltage of the power adapter;
• detecting, by the terminal, an input voltage of the power adapter;
• and
• determining, by the terminal, whether an impedance of the charging loop is abnormal according to a difference between the input voltage and the output voltage,
• determining, by the terminal, a level of the impedance according to the difference;
• and
• controlling, by the terminal and according to the level of impedance, the charging loop to enter into a protected state corresponding to the level of impedance if the impedance of the charging loop is abnormal.

A method for processing an impedance anomaly of a charging loop, comprising:

• detecting, by the power adapter, an output voltage of the power adapter when the power adapter charges the terminal;
• sending, by the power adapter, voltage indication information to the terminal, the voltage indication information indicating the output voltage of the power adapter detected by the power adapter;
• receiving, by the power adapter, charging protection indication information from the terminal if the terminal determines that an impedance of the charging loop is abnormal based on a difference between an input voltage of the power adapter and the output voltage of the power adapter;
• and
• controlling, by the power adapter, the charging loop to enter into a protected state according to an indication of the charging protection indication information, the indication of the charging protection indicative information indicating a protection state corresponding to a level of the impedance determined according to the difference.