A charging control method comprising: establishing communication between a charging device and a terminal device , the terminal device comprising a first controller , and the charging device comprising a second controller ; obtaining, by the second controller in communication with the first controller , a voltage value of a cell of the terminal device ; searching, by the second controller , a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell; rectifying and filtering, by a regulation circuit of the charging device , an input electric supply to obtain a first power signal, and performing, by the regulation circuit , current regulation on the first power signal based on the current regulation instruction to obtain a second power signal, and outputting, by the charging device , the second power signal to the terminal device ; detecting, by the charging device , abnormal charging information; closing, by a second switch circuit of the charging device , the output of the charging device in response to detecting the abnormal charging information; characterised in that the method further comprises: sending, by the second controller , a quick-charging request to the first controller to ask the terminal device whether to accept a high-current charging of the charging device on the cell of the terminal device ; and receiving, by the second controller , a quick-charging permission instruction sent by the first controller and performing high-current charging on the cell of the terminal device . establishing communication between a charging device and a terminal device , the terminal device comprising a first controller , and the charging device comprising a second controller ; obtaining, by the second controller in communication with the first controller , a voltage value of a cell of the terminal device ; searching, by the second controller , a threshold segment table to find a current regulation instruction matched with a threshold segment containing the voltage value of the cell; rectifying and filtering, by a regulation circuit of the charging device , an input electric supply to obtain a first power signal, and performing, by the regulation circuit , current regulation on the first power signal based on the current regulation instruction to obtain a second power signal, and outputting, by the charging device , the second power signal to the terminal device ; detecting, by the charging device , abnormal charging information; closing, by a second switch circuit of the charging device , the output of the charging device in response to detecting the abnormal charging information; characterised in that the method further comprises: sending, by the second controller , a quick-charging request to the first controller to ask the terminal device whether to accept a high-current charging of the charging device on the cell of the terminal device ; and receiving, by the second controller , a quick-charging permission instruction sent by the first controller and performing high-current charging on the cell of the terminal device . sending, by the second controller , a quick-charging request to the first controller to ask the terminal device whether to accept a high-current charging of the charging device on the cell of the terminal device ; and receiving, by the second controller , a quick-charging permission instruction sent by the first controller and performing high-current charging on the cell of the terminal device . <EOS>