Electric drive product comprehensive efficiency evaluation method and device

Abstract

The invention provides an electric drive product comprehensive efficiency evaluation method, which comprises the following steps: carrying out a bench test on a to-be-evaluated system to respectively obtain system efficiency data of the to-be-evaluated system in a driving mode and a braking mode; counting the actual operation data of the whole vehicle working condition of the vehicle of the same type as the to-be-evaluated system in a preset time period through a cloud platform or an actual vehicle following mode; and integrating the system efficiency data and the actual operation data, and analyzing to obtain a comprehensive energy consumption evaluation result of the to-be-evaluated system. According to the invention, the efficiency of the electric driving system of the whole vehicle under different working conditions is taken into consideration, comprehensive efficiency evaluation is carried out on the to-be-evaluated electric driving system through evaluation indexes of multiple dimensions, and a more comprehensive evaluation method is provided for the comprehensive efficiency evaluation system of the electric driving system.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a method and device for evaluating the comprehensive efficiency of electric drive products. Background technique [0002] Comprehensive efficiency is an important index for evaluating a set of electric drive products, and the evaluation result of this index is directly related to the energy consumption of the whole vehicle. At present, when evaluating the overall efficiency of an electric drive product in the industry, the proportion of high-efficiency areas in the system efficiency map or the average system efficiency is usually used as the evaluation index of system efficiency. This evaluation method has certain defects, that is, it does not take into account The frequency of use of the working range of the motor under the working conditions of the whole vehicle. If the high-efficiency range of the motor does not cover the common range of the whole vehicle, then eve...

AI Technical Summary

Problems solved by technology

At present, when evaluating the overall efficiency of an electric drive product in the industry, the proportion of high-efficiency areas in the system efficiency map or the average system efficiency is usually used as the evaluation index of system efficiency. This evaluation method has certain defects, that is, it does not take into account The frequency of use of the working range of the motor under the working conditions of the whole vehicle. If the high-efficiency range of the motor does not cover the common range of the whole vehicle, then even if the high-efficiency area ratio and average efficiency of the motor are high, the energy consumption performance of the whole vehicle will be poor

With the increasing maturity of the new energy electric drive system industry, the shortcomings of the existing technology, which is not related to the actual working conditions of the vehicle, have become more and more obvious.

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