Navigation method and system of electric vehicle as well as vehicle-mounted navigation terminal and server

Abstract

The invention discloses a navigation method and system of an electric vehicle as well as a vehicle-mounted navigation terminal and a server. The method comprises the following steps: establishing connection with the server; downloading a latest charging pile database from the server when monitoring that charging pile data is updated; updating a position of a charging pile in a local navigation map according to the latest charging pile database, obtaining current position information and a current remaining driving range of the electric vehicle, and obtaining a destination input by a user; generating navigation route information according to the current position information, the destination, the current remaining driving range and the position of the charging pile, and carrying out navigation according to the navigation route information. Through the method of the embodiment, the traffic cost needed for updating the navigation map is reduced; the position of the charging pile in the navigation map is updated in time; the charging pile information is accurately provided in the navigation map; the targeted navigation service is offered for the electric vehicle; the navigation experience of the user is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a navigation method and system for electric vehicles, a vehicle navigation terminal and a server. Background technique [0002] With the development of the modern automobile industry, automobiles have gradually become people's means of transportation. The increase in the number of automobiles has caused many problems such as traffic congestion, road blockage, and air quality degradation. Therefore, with the continuous development of the concept of green environmental protection, the technology of electric vehicles is also constantly developing. Therefore, as a low-carbon and environmentally friendly means of transportation, electric vehicles are accepted by more and more people and gradually become a reliable daily life. At the same time, just like ordinary cars need gas stations, electric vehicles also need charging piles for energy supplementation. [0003] When an E...

AI Technical Summary

Problems solved by technology

If in an unfamiliar city, the electric vehicle needs to be charged, and the electric charging station cannot be found in time, resulting in the inability to charge in time, wasting the battery's own power in the electric vehicle, and causing great inconvenience to the user

[0004] At present, with the acceleration of the construction of charging piles, the location information of many new charging piles is updated very quickly, which requires frequent upgrades of the navigation electronic map, otherwise the navigation electronic map cannot provide users with the latest charging pile location information, which will cause users to fail. Query the location information of the charging pile that needs to be queried

In the existing vehicle navigation system, the update of the navigation electronic map mostly adopts the traditional version update method, and the entire version of the map data is updated by replacing the storage medium or rewriting the data. The update cycle is long, and the update of the navigation electronic map requires more energy. Network resources, which will lead to higher traffic costs of the vehicle navigation terminal, and when the vehicle navigation terminal is navigating, the navigation prompts are only given according to the navigation line. However, for electric vehicles, the electric vehicle needs to be Charging, the car navigation terminal cannot promptly remind the surrounding charging pile information, and cannot provide effective travel reminders for electric vehicles

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