Judgment method of braking system performance of new energy vehicles

Abstract

The invention discloses a new-energy automobile braking system performance determination method. The method comprises the steps that historical driving data is utilized to perform safety assessment onhistorical driving behaviors of a driver; vehicle braking data is utilized to calculate the average deceleration and the slip rate of a vehicle in a braking state, and the braking performance of thevehicle under a normal condition is judged according to the average deceleration and the slip rate, wherein the normal condition is defined as a state without a braking accident; an abnormal value ofvehicle travel data is detected, and whether the situation that braking pedal depth data is available but effective braking is unavailable and the situation that acceleration pedal depth is inconsistent with actual acceleration exist is detected to judge the control performance of a vehicle braking system; and the current braking system performance of the vehicle is determined according to the safety assessment result of the driving behaviors of the driver, the braking performance of the vehicle under the normal condition and the control performance of the vehicle braking system. According tothe method, artificial factors and mechanical factors are combined, and inaccurate judgment caused by either subjective evaluation factors or mechanical fault factors is eliminated.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles and vehicle safety detection, in particular to a method for judging the performance of a braking system of a new energy vehicle. Background technique [0002] In recent years, China's new energy vehicle industry has developed rapidly, and its production and sales volume has continued to maintain a leading position in the world. At this time, safety issues cannot be ignored. The recent out-of-control incidents of new energy vehicles in Xi'an, Wuhan, Changsha and other places have brought safety to the forefront of controversy. convince. Moreover, there have been rumors that the braking system of new energy vehicles is not sensitive for a long time. Therefore, it is an urgent technical problem to be solved in the industry to scientifically and objectively analyze and judge the braking performance of new energy vehicles. [0003] The disclosure of the above background technical content...

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a method for judging braking performance by analyzing driving behavior data and braking data, so as to solve the problem that the braking performance of new energy vehicles is not objective enough, and at the same time, it can also assist in the prevention of traffic accidents. Responsibility determination

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