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1、上海交通大学工程硕士学位论文ABSTRACTRESEARCHOFLOWPOWERWIRELESSCHARGINGANDSYSTEMIMPLEMENTATIONABSTRACTWirelesschargingisanemergingtechnology.Sincetheemergence,itattractedmanypeople'sattentionandinterest,includingscientificresearchinstitutions,enterprisesandcustomers.Withthepopularityofsmartmobilepho
2、nes,powerconsumptionofmobilephoneisalsogrowing,thetraditionalwayofchargingcablehasbeenunabletomeetthedemand.Ontheonehandisthebatterycapacitycannotmeettherequirements,ontheotherhand,avarietyoflinecrosstogetheranditseemsverymessy.Wirelesschargingstandardappearsastimegoesby.Itisexpectedt
3、oestablishauniversalwirelesschargingstandard.Manyuniversitieshavealsostudiedtheprincipleandimplementationoftheprototype.Butthereisagapwiththeactualproduct.Thecoretechnologyofintegratedcircuitiscontrolledbyforeigncompanies.Thisthesisisbasedonthepowertransmitterchipandtodesignawirelessc
4、hargingtransmittersystem,thendesignthesystemsoftware.Finallywefinishacommercialproduct.InorderforwirelesschargingsystemtomeettheQistandard,weshouldbefamiliarwiththestandard.Beforethedesignofchipandsystem,Istudiedthecontentofthestandard.Thestandardgivestheprincipleandrequirements,andal
5、sogivesareferencedesign.Butthedetailsofeachcompanyarenotthesame.Wefirstdoasetofwirelesschargingtransmitterandreceiverprototypesystem.Thenthechipteamdesignedwirelesschargingtransmitterchip.Basedonthisdesign,wedesignthetransmittersystemandthesoftware.Thekeytomeetthestandardliesinthesoft
6、ware.Theresearchresultsare:analysisoftheprincipleandstandardofwirelesscharging,mainlyoftheWPClowpowerwirelesschargingstandard.Therearemorethan10typesoflowpowertransmittingsystemandweselectedtheA11type(5Vinputwithsinglecoil).Intheaspectofsystemdesign,basedonthechipdesignedbythecompany,
7、weselectedtheperipheraldevicesincludingMOSFET,coil,capacitance,andamplifier,designedasystemfortransmittingboardwithwhichwedebuggedthesoftwarel.Thereceivingcircuitchipismoredifficulttodesign,wefirstusedseparateddevicestobuildaprototypesystem,butthevolumeislargeranditcannotbeputinsideth
8、emobi
