Computing method of remained driving distance of pure electric vehicle

The invention discloses a computing method of a remained driving distance of a pure electric vehicle. The computing method is characterized in that the remained driving distance is Sremain, (the formula is in the specification), wherein an average number of E is average electric quantity consumed by the pure electric vehicle in a unit of mileage from the moment that the pure electric vehicle is fully charged to the current moment, and Eremain is remained electric quality of the pure electric vehicle at the current moment; (the formula is in the specification), wherein n is a positive integer, Sdelta ti is a distance driven by the pure electric vehicle in ith time bucket, Wdelta ti is electric energy consumed by the pure electric vehicle in the ith time bucket, and delta ti represents the ith time bucket before the current moment.