Energy lithium batteries for an electric vehicle control method

The present invention relates to a control method for an electric vehicle energy lithium batteries, the method comprising the sequential steps of: charging the vehicle controller ECU when the mileage clearing, charging is completed, the controller ECU calculates the vehicle battery pack, Meanwhile, the driver of the vehicle before the driver set mileage; ECU determines whether the body controller battery pack can support a set mileage, if the judgment result is no, power generating units is started, otherwise the generator does not operate; reached after the end of the set mileage, began the next cycle. The energy usage of the lithium batteries of the present invention is controlled by the rational distribution, so that the electric vehicle power lithium battery pack can be reasonably utilized, to extend the driving range of electric vehicles, but also reduce the price of an electric vehicle on the basis of the number of expensive power lithium battery, greatly reducing the cost of the vehicle, the vehicle to facilitate promotion and application.