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Pure electric vehicle endurance mileage calculating method and system

A pure electric vehicle and cruising range technology, which is applied in the calculation method and system field of pure electric vehicle cruising range, can solve the problems that the cruising range is difficult to achieve very accurate, the target distance of electric vehicles is short, and the charging time is long, etc., to solve the problems of users Some use problems, promotion and development effects

Inactive Publication Date: 2018-08-21
CHERY AUTOMOBILE CO LTD
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AI Technical Summary

Problems solved by technology

Due to the limitation of cruising range, coupled with the small number of charging stations and long charging time and other factors, electric vehicles are more likely to be afraid to travel because they are a little short of the target distance, or unable to reach home after driving tens of kilometers or even a few kilometers. (or arrive at the charging station), causing trouble to the user!
[0005] When users make travel plans, the cruising range displayed on the instrument of pure electric vehicles is a very critical reference content. However, it is limited by the estimation of battery power, driving habits of drivers, actual road conditions and many other factors. The cruising range displayed on the car dashboard is difficult to be very accurate

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  • Pure electric vehicle endurance mileage calculating method and system

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Embodiment Construction

[0020] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0021] The road conditions of pure electric vehicles have a significant impact on the cruising range of the vehicle. According to the characteristics of most motors (AC permanent magnet motors), the efficiency is generally low at low and high speeds, and the high-efficiency range of the motor is generally within the range of the motor. Medium to high revs. Since most electric vehicles currently use a fixed speed ratio, and the motor speed corresponds to the vehicle speed one by one, the energy consumption rate of the whole vehicle varies to a certain extent when the vehicle runs at different speeds.

[0022] Therefore, estimating the cruising range of pure electric vehicles based on the actual road conditions of the planned roads is more informative and can solve some user problems, which i...

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Abstract

The invention discloses a pure electric vehicle endurance mileage calculating method and system. The pure electric vehicle endurance mileage calculating method comprises the following steps that the electric energy consumption rate corresponding to the speed of a whole vehicle is calibrated in advance; when the vehicle runs based on vehicle navigation, road condition information corresponding to each road section of roads planned through vehicle navigation is obtained, and the electric energy consumption rate corresponding to the speed is obtained according to the speed in the road condition information corresponding to each road section of roads; according to the electric energy consumption rate corresponding to each road section, corresponding path length and current remaining battery capacity, the endurance mileage of the automobile running in paths planned through vehicle navigation is calculated.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for calculating the cruising range of pure electric vehicles. Background technique [0002] In recent years, with the support of national and local policies, pure electric vehicles have achieved relatively rapid development. The battery system, motor system and vehicle control of pure electric vehicles have made significant progress! [0003] In the automotive industry, the technological progress and development of pure electric vehicles has solved some environmental and energy problems, but there are still certain technical defects. Constrained by the development bottleneck of the battery industry, the cruising range of pure electric vehicles cannot meet people's psychological needs. Limited by various factors such as the development of battery technology and cost constraints, the cruising range of models currently on the market generally does not exceed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCB60L58/10B60L2240/12B60L2240/54B60L2240/64B60L2260/52Y02T10/70
Inventor 倪绍勇汪跃中王金桥王新树
Owner CHERY AUTOMOBILE CO LTD
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