The invention belongs to the technical field of electric vehicles, and relates to an 
energy control method of an extended range 
electric vehicle. The problems of short service life of power batteries, low working efficiency of engines and the unitary vehicle 
operation mode in the prior art are solved. The 
energy control method of the extended range 
electric vehicle comprises the following steps of (1) acquiring the health status of a 
power battery, (2) judging whether the health status of the 
power battery is smaller than the health status index value of the 
power battery or not, (3) judging whether a 
brake pedal acts, (4) judging whether the electric quantity of the power battery is higher than the electric quantity 
lower limit value of the power battery which is in the health status or not, (5) entering into a multipoint electric quantity 
recovery stage in a whole vehicle mode, (6) entering into a single-point electric quantity consumption stage in a whole vehicle mode, (7) judging whether the 
brake pedal acts, (8) judging whether the electric quantity of the power battery is higher than the electric quantity 
lower limit value of the power battery which is in a non-health status, (9) entering into a curve electric quantity maintaining stage in a whole vehicle mode, and (10) entering into a curve electric quantity consumption stage in a whole vehicle mode and controlling the 
operation mode of the whole vehicle by the power demanded by the whole vehicle.