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SHANDONGＵＮＩＶＥＲＳＩＴＹＯＦＴＥＣＨＮＯＬＯＧＹ毕业设计说明书电动汽车气压制动系统设计学院：交通与车辆工程学院专业：交运1202学生姓名：雷威学号：12110202112指导教师：鲁力群2016年6月中文摘要-I-摘要制动系统是电动汽车的一个重要构成部分，它的工作性能会影响电动汽车的安全性。电动汽车制动系统是用以强制行驶中的电动汽车减速或泊车、使下坡行驶的汽车的车速保持稳定以及使已停驶的遇上电动汽车在原地保持不动的机构。随着高速公路的迅速发展和车速的提高以及车流密度提高的日趋增大，为了确保行车安全，汽车制动系统的工作可靠性显得非常重要。也只有制动效能良好、制动系统运行可靠的电动汽车，才能充分发挥其动力性能。气压制动是最常见的制动系统，多用于中重型汽车。气压制动系统是发展最早的一种动力制动系统。其供能装置和传动装置全都是气压式的。其控制装置大多数是由制动踏板机构和制动阀等气压控制元件组成。本文以荣威E50电动汽车为研究对象，通过理论分析和计算对其气压制动系统结构进行设计，讨论气压制动系统在纯电动汽车上的应用。关键词：气压制动；制动性；电动汽车；制动装置；Abstract-II-AbstractElectricvehiclebrakingsystemisanimportantpart,itdirectlyaffectsthesafetyofelectricvehicleselectricvehiclebrakingsystemisusedtoforcetherunningoftheelectricvehicletosloworstop,thedownhilldrivingcarspeedremainedstableandwasnotinelectricvehiclesinsituresidesnotactuatingmechanism.WiththerapiddevelopmentofExpresswayandincreasethespeedandtrafficdensityincreasingdaybyday,inordertoguaranteethetrafficsafety,vehiclebrakingsystemworkingreliabilitybecomesmoreandmoreimportannt.Onlythebrakingefficiency,goodbrakesystemworkreliableelectricvehicle,inordertogivefullplaytoitsdynamicperformance.Thebarometricbrakesystemisthemostfamiliarpowerservobrakesystem．Thebarometricbrakesystemisthefirstdevelopmentofadynamicbrakingsystem.Itsenergysupplyallequipmentandgear-typepressureMostofthecontroldeviceisabrakepedalandthebrakeandotherinstitutionsformedtheoriginal.Inthispaper,theapplicationofRoeweE50electriccar,Throughtheoreticalanalysisandcalculationofthestructureofitsairbrakesystemdesign,discussionofairbrakesystemonpureelectricvehicles.Keywords:barometricbrakesyste;rakeperformance;Electricvehicle;Brakerigging目录-III-目录摘要............................................................................................................................IAbstract.......................................................................................................................II目录..............................................................................................................................III第一章绪论..................................................................................................................11.1课题背景与意义........................................................................................11.1.1电动汽车历史...................................................................................11.1.2我国电动车行业现状.........................................................................21.1.3电动汽车发展前景.............................................................................31.2制动系统的作用.............................................................................................41.3气压制动系统研究现状.................................................................................51.4本文研究内容.................................................................................................5第二章制动系的总体设计..........................................................................................62.1制动系统的设计要求.....................................................................................62.2制动系的参数选择.........................................................................................62.3前后轴制动力分配系数与同步附着系数的确定.........................................72.3.1确定同步附着系数0.........................................................................72.3.2确定前后轴制动力矩分配系数β......................................................92.4本章小结........................................................................................................9第三章制动器的设计与计算....................................................................................103.1制动器制动力矩的确定...............................................................................103.2鼓式制动器的主要参数...............................................................................113.2.1确定制动鼓直径D............................................................................113.2.2摩擦衬片宽度b及包角...............................................................133.2.3摩擦衬片初始角的选取....................................................................14目录-IV-3.2.4确定摩擦衬片的型号及摩擦系数................................................143.2.5摩擦衬块内径R1与外径R2.........................................................153.2.6摩擦衬块工作面积A........................................................................153.3制动器制动因数的计算...............................................................................153.4制动鼓主要零部件的结构设计...................................................................163.4.1摩擦材料............................................................................................173.4.2制动鼓................................................................................................173.4.3制动蹄................................................................................................183.4.4制动底板............................................................................................193.4.5制动蹄的支承....................................................................................193.4.6凸轮式张开机构......................................................................