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Control method and system of electric vehicle

A technology for electric vehicles and control methods, which is applied to control devices, vehicle components, input parameters of external conditions, etc., can solve problems such as the life safety of drivers in danger, and achieve the effect of improving reliability and ensuring safety.

Inactive Publication Date: 2015-05-20
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the safety distance is set too small, it may even endanger the life of the driver

Method used

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  • Control method and system of electric vehicle
  • Control method and system of electric vehicle
  • Control method and system of electric vehicle

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote 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.

[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or e...

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Abstract

The invention provides a control method and system of an electric vehicle. The method comprises the following steps that in the running process of the electric vehicle, the relative seed, distance and road condition information between the electric vehicle and a front vehicle or a front obstacle are detected; according to the relative seed, the distance and the road condition information, the collision time of the electric vehicle and the front vehicle or the front obstacle is estimated; when it is judged that the collision time is within a preset range, prompting information is sent out, and the speed of the electric vehicle is limited; when the collision time is smaller than first preset time, prompting information is sent out, and emergency brake is carried out on the electric vehicle. According to the control method, the estimated collision time is compared with the first preset time and the preset range, so that speed limiting or prompting or emergency brake is carried out on the electric vehicle according to the comparison result, then a driver has enough time to do corresponding operation, meanwhile, the safety of the driver can be guaranteed, and reliability is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a control method and system for electric vehicles. Background technique [0002] With the continuous development of electric vehicle technology, the safety of electric vehicles has attracted more and more attention from users. When encountering emergencies or situations such as driver fatigue driving and distraction, it is very easy to cause traffic accidents such as rear-end collisions. [0003] The existing control method only judges whether to brake based on the distance, that is, the safety distance is set rigidly and the electric vehicle is braked when the vehicle distance is less than the safety distance. Because this method only judges based on the distance and does not fully consider the variability of the safety distance, it will reduce the reliability of the electric vehicle. If the safety distance is set too small, it may even endanger the life safety of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/09B60W10/08B60W10/18
CPCB60W10/08B60W10/18B60W30/09B60W50/14B60W2520/10B60W2554/00B60W2554/801B60W2710/083B60W2710/18
Inventor 赵祥日闫丽娟申佳佳孙忠敏孙钢
Owner BEIQI FOTON MOTOR CO LTD