A Quantitative Test and Calculation Method for Overall Efficiency of Automobile Electric Energy System

Abstract

The invention discloses a comprehensive efficiency quantitative test and calculation method for an automobile electric energy system. The steps include: firstly determining the set of cycle working conditions, experimental constant parameters, test times, and load demand power in the vehicle environment; The load demand power in the set is tested in a cyclic working condition, and the data at the sampling time of each test is recorded to obtain the total sampling set; the coarse error is eliminated and the optimized data processing algorithm is used for data processing through the Raida criterion, and the corrected test result is obtained. The set of test values; the corrected test value is substituted into the average efficiency calculation formula of the vehicle composite power supply system for calculation, and the average efficiency of the composite power supply system is obtained. The invention makes the average efficiency of the test more accurate, evaluates the comparison of the average efficiency of the test vehicle under different demand powers, and can provide certain data support for the optimization and improvement of the related control strategies of the subsequent composite power supply system, so as to achieve the purpose of optimizing energy management and 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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