纯电动汽车能量流向及降能耗措施分析.docxVIP

纯电动汽车能量流向及降能耗措施分析

摘要：能量流向分析是新能源汽车能耗的重要分析手段，通过能量流向分析可全面了解车型电耗的分布情况，定量地找到样车与标杆车型之间的能耗差异，从而确定最有效改善能耗水平的着手点。文章通过理论分析整车能耗机理，挖掘能耗的关键控制项；自动化控制实现各种能量相关的物理量的实时采集和数据处理，并作为降能耗措施的最终验收标准。基于高精度实测数据建立并标定整车能量流仿真模型，一方面精准定位潜在的节能方向；另一方面作为项目开发早期预判的理论支撑，对动力总成构架、部件选型及设计参数进行优化，寻找最

利于能耗的解决方案。

关键词：能量流；阻力分解；仿真分析；降能耗

AnalysisofEnergyFlowDirectionofElectricVehicleandResearchonMeasurestoReduceEnergyConsumption

Abstract:Energyflowanalysisisanimportantanalysismethodofenergyconsumptionofnewenergyvehicles.Throughenergyflowanalysis,wecancomprehensivelyunderstandthedistributionofpowerconsumptionofvehiclemodels,quantitativelyfindtheenergyconsumptiondifferencebetweensamplevehiclesandbenchmarkvehicles,anddeterminethestartingpointforthemosteffectiveimprovementofenergyconsumptionlevel.Inthispaper,theenergyconsumptionmechanismofthewholevehicleisanalyzedtheoretically,andthekeycontrolitemsofenergyconsumptionaremined;automaticcontrolrealizesreal-timecollectionanddataprocessingofvariousenergyrelatedphysicalquantities,andservesasthefinalacceptancestandardofenergyconsumptionreductionmeasures.Basedonthehigh-precisionmeasureddata,theenergyflowsimulationmodelofthewholevehicleisestablishedandcalibrated.Ontheonehand,itaccuratelylocatesthepotentialenergyconservationdirection,andontheotherhand,itservesasthetheoreticalsupportfortheearlypredictionoftheprojectdevelopment,optimizingthepowertrainframework,componentselectionanddesignparameters,andfindingthesolutionmostconducivetoenergy

电池传动轴电机MCU半轴蓄电池consumption.

电池

传动轴

电机

MCU

半

轴

蓄电池

Keywords:Energyflow;Resistancedecomposition;Simulationanalysis;Reduceenergyconsu-mption

在电动汽车的发展中，续驶里程和能耗是用户最为关注的问题，里程焦虑成为阻碍电动车发展最主要的瓶颈[1]。目前国内外围绕电动汽车能耗优化的研究主要应用的方法多数为整车软件仿真和系统台架试验。整车试验由于投入成本较高，试验工况复杂，尚未得到大规模应用[2]。而且能耗测试在整车上进行时，影响因素较