汽车专业英语(幻灯片)chapter 6 electrical system课件.ppt

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1、ElectricalandelectronicsystemQuestion1:Listthemajorpartsofacarelectricalsystem.BatteryStarterChargingsystemIgnitionLightingAuxiliaryElectronicDeviceThepurposeofthebatteryistostoreelectricalenergy.Itdoesthisbyconvertingtheelectricalenergysuppliedtoitintochemicalenergys

2、othatwhenanelectricalcurrentisrequiredtheenergychangeisreversed.蓄电池用于储存电能，它将电能转变为化学能储存，在用电时再将化学能转变为电能。Inmakingthebattery,severalsimilarplatesareproperlyspacedandweldedtoformaplategroup.Platesoftwotypesareused,oneforthepositiveplategroup,theotherforthenegativeplategrou

3、p.Apositiveplateisnestedwithanegativeplategroup,withseparatorsplacedbetweentheplatestoformanelement.Separatorsaredesignedtoholdtheplatesapartsothattheydonottouch,andatthesametimetheymustbeporousenoughtopermitelectrolytetocirculatebetweentheplates.在制造蓄电池时，几块相似的极板以适当的间隔

4、焊在一起组成极板组．极板组分为两种，阳极板组和阴极板组．一块阳极板被一组阴极板所包围，隔板放在两组极板之间形成一个单元．隔板又必须具有多孔性，使电解液能够在各极板间流动．Question2:ListthetypesofBattery.Positiveplate正极板NegativeplateElectrolyteinlet电解液入口DiluteH2SO4稀释的H2SO4Lead-acidBattery铅酸电池Nickel-hydrogenBattery镍氢电池绝缘层HydrogenFuelCell氢燃料电池Lithium-ionB

5、attery锂离子PositiveplateNegativeplateElectrolyteWaterWaterAcidAcidCan金属容器Anode阳极Cathode阴极Thechargingsystemprovidestheelectricalenergyacarneedsonceitsenginestarts.Thechargingsystemdoestwojobs.First,itprovideselectricalpowerfortheignitionsystemandthecar'selectricalaccesso

6、ries.Second,itreplacesthepowerusedbythebatteryinstartingthecar.Inotherwords,thechargingsystemmaintainsthebattery’sstateofcharge.一旦开始发动，充电系统就给汽车提供电能。充电系统有两个任务：首先，给点火系和电力附件提供电能；其次，给电池补充在起步时消耗的电能，换句话说，就是维持电池的电荷状态。Question３:What’stheoperationtheoryofAlternator?Electricity

7、canbeproducedbymovingaconductorthroughamagneticfield,Theoppositealsoholdstrue.Bymovingthemagneticfieldandholdingtheconductor,electricitycanbegeneratedintheconductor.Thiscurrentiscalledaninducedcurrent.Thisisthebasicprincipleofthealternator,anelectromechanicaldevicetha

8、tchangesmechanicalenergyintoelectricalenergy.导体在磁场中移动会产生电流，反之也成立。保持导体固定不动，移动磁场，导体中就会产生电流，该电流称为感应电流。发电机的基本原理就是这样的，通过机电装置把机械能转