Remaining driving range estimation method and device and electric vehicle

Abstract

The invention provides a remaining driving range estimation method and device and an electric automobile, and the remaining driving range estimation method comprises the steps: after the whole automobile is powered on, obtaining the initial power consumption per hundred kilometers stored in the last driving, and obtaining the battery state information and the automobile mode information; when the vehicle mode information is a static discharge mode, calculating a first to-be-corrected remaining driving range and average discharge power according to the battery state information and the initial power consumption per hundred kilometers; in a preset average speedometer, obtaining a target average vehicle speed corresponding to the average discharge power; in a preset first residual driving range correction coefficient table, a first target residual driving range correction coefficient corresponding to the target average vehicle speed is obtained; and calculating the current remaining driving mileage of the vehicle according to the first to-be-corrected remaining driving mileage and the first target remaining driving mileage correction coefficient. By adopting the scheme of the invention, the estimation accuracy is high, the error estimation of the residual driving range in the static discharge mode is avoided, and the use experience of a driver is improved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a method and device for estimating remaining driving range and an electric vehicle. Background technique [0002] Driving mileage refers to the mileage that an electric vehicle can maintain continuously under certain operating conditions after it is fully charged. The remaining driving range refers to the driving range of the electric vehicle under certain working conditions under the current on-board power. When driving a pure electric vehicle, drivers need to pay attention to the remaining driving range and other information displayed on the instrument frequently, so as to plan the travel route and mileage in advance and reduce anxiety about the mileage. However, the existing electric vehicles have the function of supplying power to other electric vehicles or equipment through the discharge socket in the static state. Electric vehicles have many long-term...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method and device for estimating the remaining mileage, and an electric vehicle, so as to solve the problem in the prior art that there is a large error in the estimation of the remaining mileage when the vehicle is in the static discharge mode

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