Abstract: TooptimizetheequipmentconfigurationschemeofGEOsatelliteplatform，aLithiumionbatteryconfigurationoutsidetheeast/westpanelwasproposed.Thefeasibilityoftheschemeanditsinfluenceonsatelliteplatformwereanalyzedfromseveralaspects，especiallyinstructuraldesign，thermaldesignaswellasdevelopmentprocessofsatelliteplatform.Takingthe135A·hLithiumionbatteryasanexample，theanalysisresultsofthermalcontroldesignshowthatthenewconfigurationofLithiumionbatteryhasmoreadvantagescomparedtoitsconfigurationinsidethesouth/northpanel.Thenewconfigurationnotonlysavesmorelayoutspaceforlotsofequipmentinsidethemoduleofsatelliteplatform,butalsooptimizesthedevelopmentprocessofthesatellite.Furthermore，themechanicalandthermalperformancesofthemountingpanelarealsoimproved.Forinstance，theheatingpowerandheatrejectionareaaredecreasedby70%.Significantsavingsofthedesignresourcesareobtained.Therefore，theproposedconfigurationisaneffectiveapproachtoenhancethesystemperformanceofsatelliteplatform.

Key words: geostationaryearthorbit, Lithiumionbattery, configurationoutsidetheeast/westpanel, layout