《储能电池制造技术双语课程》课件-项目五 涂布工艺

1.涂布工艺过程CoatingProcessProcedure《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》（一）涂布前浆料调控Slurryregulationbeforecoating涂布工艺过程CoatingProcessProcedure合适粘度确保涂布均匀，过高影响厚度一致性，过低致针孔裂纹。Properviscosityensuresuniformcoatingapplication,whileexcessiveviscosityaffectsthicknessconsistencyandinsufficientviscosityleadstopinholesandcracks.粘度调控Slurryregulationbeforecoating表面张力影响润湿流平，添加表面活性剂降低张力。Surfacetensionaffectswettingandleveling,andaddingsurfactantsreducesthetension.表面张力调控surfacetensionregulation（一）涂布前浆料调控Slurryregulationbeforecoating涂布工艺过程CoatingProcessProcedure分散剂防颗粒团聚，粘结剂增强粘结力，消泡剂消除气泡，选择需考虑兼容性和电池性能影响。Dispersantspreventparticleagglomeration,bindersenhanceadhesivestrength,defoamerseliminateairbubbles,andselectionmustconsidercompatibilityandimpactonbatteryperformance.助剂调节Auxiliaryagentregulation（二）温度调控优化涂布Temperatureregulationoptimizedcoating涂布工艺过程CoatingProcessProcedure合适的温度调控策略可以提高浆料流动性、保证涂布均匀性，提升产品质量和生产效率。Appropriatetemperaturecontrolstrategiescanimproveslurryfluidity,ensurecoatinguniformity,andenhanceproductqualityandproductionefficiency.（三）涂布工艺参数控制Coatingprocessparametercontrol涂布工艺过程CoatingProcessProcedure弯液面曲率半径影响Meniscuscurvatureradiusinfluence调整涂布头与集流体间隙，改变浆料表面张力和粘度，控制涂布压力与涂布量，确保涂层均匀。Adjustthegapbetweenthecoatingheadandthecurrentcollector,modifytheslurry'ssurfacetensionandviscosity,controlthecoatingpressureandcoatingamounttoensureuniformcoating.（三）涂布工艺参数控制Coatingprocessparametercontrol涂布工艺过程CoatingProcessProcedure涂布速度与涂层质量Coatingspeedandcoatingquality平衡生产效率与涂层质量，合理选择涂布速度，避免条纹、橘皮等缺陷，确保涂层流平效果。Balanceproductionefficiencywithcoatingquality,rationallyselectthecoatingspeed,avoiddefectssuchasstreaksandorangepeel,andensurethelevelingeffectofthecoating.2.涂布后干燥工艺DryingProcessAfterCoating《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》（一）干燥工艺原理DryingProcessPrinciples涂布后干燥工艺DryingProcessAfterCoating基于蒸发原理，通过加热使NMP等溶剂从浆料中挥发。Basedontheprincipleofevaporation,solventssuchasNMParevolatilizedfromtheslurrythroughheating.干燥工艺原理DryingProcessPrinciples（一）干燥工艺原理DryingProcessPrinciples涂布后干燥工艺DryingProcessAfterCoating温度升高加快溶剂分子热运动，低压降低溶剂沸点，促进蒸发，真空干燥利于保护敏感电池材料。Temperatureriseacceleratesthethermalmotionofsolventmolecules,whilelowpressurereducestheboilingpointofthesolvent,promotingevaporation.Phoxinusphoxinussubsp.phoxinus

UtheteisaKongdryingfacilitatestheprotectionofsensitivebatterymaterials.干燥环境影响Dryenvironmentimpact（二）干燥的传质传热过程Dryingheatandmasstransferprocess涂布后干燥工艺DryingProcessAfterCoating热量从外部热源传递到湿物料，为水分蒸发提供能量；同时，物料中的水分以气态或液态形式从内部迁移到表面，再扩散到周围干燥介质中。Heatistransferredfromanexternalheatsourcetothewetmaterial,providingenergyformoistureevaporation;simultaneously,themoisturewithinthematerialmigratesfromtheinteriortothesurfaceingaseousorliquidform,thendiffusesintothesurroundingdryingmedium.（三）干燥工艺过程Dryingprocess涂布后干燥工艺DryingProcessAfterCoating预热阶段Preheatingstage渐升温度防热应力，控速1-3℃/min。Graduallyincreasingtemperaturetopreventthermalstress,withacontrolledrateof1-3℃/min.恒速干燥阶段Constant-ratedryingstage降速干燥阶段Fallingratedryingperiod（四）锂离子电池连续设备Lithium-ionbatterycontinuousproduction.equipment涂布后干燥工艺DryingProcessAfterCoatingContinuousdryingequipmentcomposition连续干燥设备组成Dryingchamberdesign。干燥箱体设计（五）极片干燥流程Electrodesheetidryingprocess涂布后干燥工艺DryingProcessAfterCoating干燥温度控制干燥时间优化气流速度调节湿度管理DryingtemperaturecontrolDryingtimeoptimizationAirflowvelocityregulationHumiditymanagement3.涂布后干燥缺陷认知UnderstandingofDryingDefectsAfterCoating《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》火山口弊病Craterdefect一、因表面张力为主引起的弊病Defectsprimarilycausedbysurfacetension干燥不均致溶剂快蒸，表面张力增，吸引浆料流，形成中心凹陷边缘凸起。Unevendryingcausesrapidsolventevaporation,surfacetensionincreases,attractingslurryflow,formingacentraldepressionwithraisededges.二、对流蜂窝弊病Convectivecellularpathology溶剂蒸发气流成对流，留蜂窝状迹，需稳温控气流，加表面活性剂抑对流。Thesolventevaporationairflowformsconvection,leavinghoneycomb-liketraces,requiringstabletemperature-controlledairflow,withsurfactantsaddedtosuppressconvection.边缘溶剂快蒸，张力拉浆料堆，设边缘控装置，调涂布参数减弊。Edgesolventrapidevaporation,tensionpullingslurryaccumulation,setedgecontroldevice,adjustcoatingparameterstomitigatedefects.三、厚边与画框弊病Thickedgesandframingdefects四、粘接剂分布与性能AdhesiveDistributionandProperties粘接剂的分布状态直接决定涂层与集流体的附着力、涂层内部的结构稳定性，以及电池的电学性能（如内阻、倍率）和循环寿命。Thedistributionstateoftheadhesivedirectlydeterminestheadhesionbetweenthecoatingandthecurrentcollector,thestructuralstabilitywithinthecoating(broussonetiapapyrifera),aswellastheelectricalperformance(suchasinternalresistanceandratecapability)andcyclelifeofthebattery.五、空气运动为主引起的弊病Thedrawbacksprimarilycausedbyutetheisakongqimovement带状弊病Streakdefects干燥过程气流不均，致涂层厚薄不一，需优化通风，确保气流均匀。Unevenairflowduringthedryingprocessleadstoinconsistentcoatingthickness.Itisnecessarytooptimizeventilationtoensureuniformairflow.六、斑状弊病Mottleddefect局部气流不稳定，形成斑点状缺陷，合理设计干燥设备，增加气流稳定性。Localairflowinstabilityleadstospot-likedefects;reasonablydesigndryingequipmenttoenhanceairflowstability.七、其他弊病Otherdrawbacks气孔问题Stomatalissues控制气孔形成，需优化浆料制备与干燥工艺，采用真空搅拌，设置排气装置，延长干燥时间。Tocontrolstomatalformation,itisnecessarytooptimizetheslurrypreparationanddryingprocess,utilizePhoxinusphoxinussubsp.phoxinusUthetheisakongforstirring,installexhaustdevices,andextenddryingtime.八、发白现象Whiteningphenomenon防止涂层发白，应调整干燥温度与浆料配方，减缓溶剂挥发，确保成分均匀扩散。Topreventcoatingwhitening,thedryingtemperatureandslurryformulationshouldbeadjustedtoslowdownsolventevaporationandensureuniformdiffusionofcomponen