New energy vehicle health condition remote evaluation method and system

Abstract

A new energy vehicle health condition remote evaluation method comprises the steps that a vehicle-mounted terminal obtains fault code data and vehicle condition data of a new energy vehicle and uploads the data to a cloud platform through a T-box; the cloud platform acquires maintenance record data of the new energy vehicle and fuses the maintenance record data with the vehicle fault code featuresand the vehicle condition data features to generate fault health features, vehicle condition health features and maintenance health features; data cleaning is performed on the fault health features,the vehicle condition health features and the maintenance health features; weight calculation is carried out on the features after data cleaning; and a health comprehensive score of the new energy vehicle is calculated according to the fault health features, the vehicle condition health features and the maintenance health after weight calculation. According to the method, the vehicle health condition can be remotely evaluated based on the vehicle big data and displayed to a driver in a numerical value scoring mode, multi-dimensional features are constructed through the algorithm, the vehicle health condition can be accurately evaluated, the weight is determined based on statistical distribution of the health features, and the importance of the features can be objectively and accurately recognized.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, in particular to a method and system for remote evaluation of the health status of new energy vehicles. Background technique [0002] Among the existing on-board equipment, the vehicle fault diagnosis system is already a relatively mature technology. Through the vehicle information acquisition module connected with the vehicle's internal electronic control unit, the detailed parameters of the vehicle's various control systems can be accurately obtained. On the vehicle end, the driver can see the vehicle's tire pressure, SOC, temperature, and fault code index data, but these data are used in isolation. The vehicle big data collected by Tbox has not yet been fully utilized for comprehensive evaluation , the vehicle's health status lacks the means to quantitatively distinguish it. [0003] Moreover, only when the vehicle has a problem or failure, the vehicle will provide users with limi...

AI Technical Summary

Problems solved by technology

On the vehicle end, the driver can see the vehicle's tire pressure, SOC, temperature, and fault code index data, but these data are used in isolation. The vehicle big data collected by Tbox has not yet been fully utilized for comprehensive evaluation , the vehicle's health status lacks the means to quantitatively differentiate

[0003] Moreover, only when the vehicle has a problem or failure, the vehicle will provide users with limited information through a specific identifier, code or simple text. When the user obtains the vehicle failure information, the vehicle may no longer be available, and the user cannot Obtaining vehicle health information before a vehicle accident can easily lead to safety accidents

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