Path programming method of electric automobile, and navigation device

Abstract

The invention discloses a path programming method of an electric automobile, and a navigation device. The method comprises the following steps: obtaining a first navigation path according to a departure point and a destination through planning; acquiring the reachable mileage of the electric automobile; determining whether the mileage of the first navigation path is greater than the reachable mileage or not; searching charging stations in the reachable mileage along the first navigation path by adopting the departure point as a starting point if so; calculating the weights of the charging stations, and selecting one charging station according to the weights; determining whether a distance from the selected charging station to the destination is greater than the maximum driving mileage of the automobile or not; and continuously searching the charging stations in the maximum driving mileage along the first navigation path by adopting the selected charging station as a next starting point if so, and programming a second navigation path by adopting the selected charging station as a passing point according to the starting point and the destination if not. The endurance of the electric automobile is guaranteed to avoid a case that charging stations cannot be found when the electric automobile needs to be charged.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a route planning method and navigation equipment for electric vehicles. Background technique [0002] With the increasing shortage of earth's energy, new energy vehicles (electric vehicles) using electric energy have taken advantage of the trend and have a certain market share. New energy vehicles have the characteristics of less pollution and low noise. However, due to technical limitations, the battery capacity of new energy vehicles that use electric energy is limited, and the supporting charging stations often only exist in specific locations. This has caused great inconvenience, causing users of electric vehicles to often worry about being unable to charge while driving. Contents of the invention [0003] The purpose of the present invention is to provide a route planning method and a navigation device for an electric vehicle, so that the electric vehicle can conveniently find a...

AI Technical Summary

Problems solved by technology

New energy vehicles have the characteristics of less pollution and low noise. However, due to technical limitations, the battery capacity of new energy vehicles that use electric energy is limited, and the supporting charging stations often only exist in specific locations. It has brought a lot of inconvenience, causing electric car users to often worry about not being able to charge while driving

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