Securely Intelligent Charging System and the Method Thereof

The present invention is proposed to improve a conventional two-pin charging device (dumb charger), which stops charging when the battery is fully charged and can avoid the inrush current at any charging stage. A novel intelligent securely charging system is proposed, which includes a control module for controlling the operation of the system, a power conversion module for converting the input AC power ACinto the electricity required by the system, a switch module for passing or interrupting electrical power transformation, and a pre-charging module with impedance higher than the switch module used for limiting the inrush current, and a voltage detection module which detects the battery voltage V, the charging voltage V. Further, the pre-charging module maintains in the on-state at any charging stage, and the switching module is configured to be in the on-state or off-state according to the application of the charging stage.