New energy automobile storage battery charging method and system

The invention provides a new energy automobile storage battery charging method and a system, and relates to the field of vehicles. The new energy automobile storage battery charging method comprises the steps: firstly detecting working state information of an automobile and an electric quantity state of a storage battery; wherein the working state information comprises a state of being connected with an external power supply, a driving motor working state, a range extender state and a power battery state; and then controlling a charging module charge the automobile storage battery according tothe working state information of the automobile and the electric quantity state of the storage battery, wherein the charging module comprises the external power supply, a driving motor, a range extender and a power battery. The storage battery can be charged in different charging modes according to the working state of the automobile and the electric quantity of the storage battery, and the purposes of improving the fuel