Method and system for estimating remaining cruising range of electric vehicle and electric vehicle

A cruising range, electric vehicle technology, applied in the automotive field, can solve problems such as affecting power battery energy management, inaccurate and reliable cruising range, etc.

Active Publication Date: 2018-01-09
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the remaining cruising range of an electric vehicle is not only related to the state of charge of the power battery, but also related to driving habits, performance degradation of the power battery, etc., the electric vehicle estimated based on the linear model of the state of charge of the power battery The remaining cruising range is not accurate and reliable, which affects the energy management of the power battery

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  • Method and system for estimating remaining cruising range of electric vehicle and electric vehicle
  • Method and system for estimating remaining cruising range of electric vehicle and electric vehicle
  • Method and system for estimating remaining cruising range of electric vehicle and electric vehicle

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Embodiment Construction

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

[0052] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connect...

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Abstract

The present invention provides a method, system and electric vehicle for estimating the remaining cruising range of an electric vehicle, wherein the method includes: acquiring the discharge current and discharge voltage of a power battery, and calculating the current discharge energy of the power battery according to the discharge current and discharge voltage ; Obtain the state of charge and the number of charges and discharges of the power battery; input the state of charge, the number of charges and discharges of the power battery and the total discharge energy of the power battery per unit time into the neural network to obtain the cruising range compensation coefficient; when the vehicle is in a driving state , calculate the driving distance of the vehicle per unit time; obtain the remaining cruising range of the vehicle according to the driving distance of the vehicle per unit time, the cruising range compensation coefficient, the state of charge of the power battery, and the difference between the state of charge of the power battery before and after the unit time. The method of the invention can accurately calculate the remaining cruising range of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and system for estimating the remaining cruising range of an electric vehicle and the electric vehicle. Background technique [0002] At present, with the depletion of non-renewable energy sources and the increasingly serious environmental pollution, vehicles are constantly developing in the direction of low energy consumption and low emissions. Electric vehicles have the advantage of zero emissions. However, electric vehicles are limited by the development of power batteries, their cruising range is limited, and the charging of power batteries is relatively time-consuming. Therefore, how to manage the energy of the power battery to extend the cruising range of electric vehicles is an urgent problem to be solved. [0003] In related technologies, the remaining cruising range of the electric vehicle is usually estimated according to a linear model of the state of cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18
CPCB60L58/12B60L58/10B60L3/00B60L3/12B60L2240/547B60L2240/549B60L2260/52B60L2260/54B60L58/16B60L50/60Y02T10/70
Inventor 李玮代康伟耿姝芳梁海强
Owner BEIJING ELECTRIC VEHICLE
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