Comprehensive efficiency quantitative testing and calculation method for automotive electric energy system

Abstract

The invention discloses a comprehensive efficiency quantitative testing and calculation method for an automotive electric energy system. The comprehensive efficiency quantitative testing and calculation method comprises the steps of: firstly, determining a set of cycle operating conditions, experimental constant parameters, a number of tests and load demand power in a whole vehicle environment; performing cycle operating condition test on load demand power in the set, and recording data at a sampling moment of each test to obtain a total sample set; eliminating gross errors by adopting a Pautacriterion and processing data by adopting an optimization data processing algorithm to obtain a test value set after test correction; and substituting a corrected test quantity into a whole vehicle compound power supply system average efficiency calculation formula for calculation to obtain compound power supply system average efficiency. The comprehensive efficiency quantitative testing and calculation method makes the average efficiency of tests more precise, evaluates the comparison of average efficiency of test vehicles under different demanded power, and can provide certain data supportfor the optimization and improvement of the subsequent compound power supply system relevant control strategy, so as to achieve the purpose of optimizing the energy management control.

Description

technical field [0001] The invention belongs to the field of vehicle energy management, and specifically relates to a quantitative test and calculation method for comprehensive efficiency of an automobile electric energy system. Background technique [0002] With the development of automobiles, especially the new energy automobile industry, more and more electronic control units are integrated in the vehicle, and the power consumption of electric loads accounts for an increasing proportion of the vehicle power system. Therefore, for the vehicle composite power system The research on is particularly important, and it will be a hot issue in the field of vehicle energy management at present and in the future. [0003] The common traditional power supply system is gradually unable to meet the needs of the current vehicle electrical system. Therefore, the power supply system is developing in the direction of refined management of batteries, intelligent management of generators, a...

AI Technical Summary

Problems solved by technology

[0003] The common traditional power system is gradually unable to meet the needs of the current vehicle electrical system. Therefore, the power system is developing in the direction of refined management of batteries, intelligent management of generators, and a composite power system in which batteries and supercapacitors are connected in parallel.

[0004] In the prior art, most researchers have studied the efficiency of the composite power system of new energy vehicles, but less research has been done on traditional vehicles and hybrid vehicles

Moreover, in the research on traditional vehicles and hybrid vehicles, most of them are analyzed in the form of bench simulation computer modeling by establishing batteries, optimizing objective functions, supercapacitor models, etc. However, the real-time driving conditions of vehicles are complex and changeable. Bench Simulation Inaccurate Estimation of Hybrid Power System Efficiency

In addition, the existing experimental design methods consider too single factors and lack systematic experimental method strategy formulation, so the accuracy of experimental results and data is not ideal.

In addition, the processing of experimental data is too simple and lacks consideration of the accuracy of real-time experimental data collection, so the final effect obtained will also be biased, so it is impossible to systematically measure the average efficiency of the composite power supply system from the numerical level

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