《储能电池制造技术双语课程》课件-项目九 电池性能检测与评价

1.电池基本性能检测BatteryBasicPerformanceTesting《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》学习目标电池外观检测BatteryappearanceinspectionLearningObjectives检测方法与标准TestingMethodsandStandards极性检测的重要性Theimportanceofpolaritydetection极性检测方法Polaritydetectionmethod学习目标LearningObjectives外形尺寸及质量检测Externaldimensionsandmassinspection重量检测Weightdetection室温放电容量检测RoomtemperaturedischargecapacitytestPART01电池外观检测Batteryappearanceinspection一、电池外观检测Batteryappearanceinspection观察划痕、凹痕、变形，检查涂层完整性，确认标识清晰，确保电池密封与稳定性。Inspectforscratches,dents,anddeformations,examinecoatingintegrity,verifyclearmarkings,andensurebatterysealingandstability.PART02检测方法与标准TestingMethodsandStandards二、检测方法与标准TestingMethodsandStandards人工目视结合工具，充足光照下检查，制定详细标准，明确不合格条件，确保检测一致准确。homosapienscombinesvisualinspectionwithtools,conductsexaminationsundersufficientlighting,establishesdetailedstandards,clarifiesdisqualificationcriteria,andensuresconsistentandaccuratedetection.PART03极性检测的重要性Theimportanceofpolaritydetection三、极性检测的重要性Theimportanceofpolaritydetection确保电池正确使用和安全运行，避免设备损坏和安全事故，对电池组组装至关重要。Ensuringtheproperuseandsafeoperationofbatteriestopreventequipmentdamageandsafetyincidentsiscrucialforbatterypackassembly.PART04极性检测方法Polaritydetectionmethod四、极性检测方法Polaritydetectionmethod常用万用表检测，显示正值则极性正确Commonmultimetertestingshowspositivevalueindicatescorrectpolarity.PART05外形尺寸及质量检测Externaldimensionsandmassinspection五、外形尺寸及质量检测Externaldimensionsandmassinspection测量电池长宽高，确保符合设计规格，偏差影响装配稳定性和安全性。Measurethelength,width,andheightofthebatterytoensurecompliancewithdesignspecifications,asdeviationsaffectassemblystabilityandsafety.PART06重量检测Weightdetection六、重量检测Weightdetection对比实际与标称重量，偏差揭示内部问题，影响性能和寿命。Comparingactualversusnominalweight,deviationsrevealinternalissuesthataffectperformanceandlifespan.PART07室温放电容量检测Roomtemperaturedischargecapacitytest七、室温放电容量检测Roomtemperaturedischargecapacitytest基于电化学特性，恒流放电至截止电压，计算Q=I×t。Basedonelectrochemicalcharacteristics,constantcurrentdischargetothecutoffvoltage,calculateQ=I×t.七、室温放电容量检测Roomtemperaturedischargecapacitytest充满电后室温静置，恒流放电至截止电压，监控电流电压变化。Afterfullycharged,letitstandatroomtemperature,thendischargeatconstantcurrentuntilreachingthecutoffvoltage,whilemonitoringthechangesincurrentandvoltage.2.电池安全性能检测BatterySafetyPerformanceTesting《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》PART01过充过放试验Overchargeandoverdischargetest一、过充过放试验

Overchargeandoverdischargetest过充过放电检测旨在评估锂离子电池在过度放电情况下的安全性能和稳定性。Overchargeandover-dischargetestingaimstoevaluatethesafetyperformanceandstabilityoflithium-ionbatteriesunderexcessivedischargeconditions.PART02外部短路试验Externalshortcircuittest二、外部短路试验Externalshortcircuittest模拟意外短路，评估电池安全性能，测试热管理和防护机制。Simulateaccidentalshortcircuits,evaluatebatterysafetyperformance,andtestthermalmanagementandprotectionmechanisms.PART03试验步骤Experimentalprocedure三、试验步骤Experimentalprocedure使用专用装置短接正负极，监测温度变化，观察鼓包、冒烟、起火等安全现象。Useadedicateddevicetoshort-circuitthepositiveandnegativeelectrodes,monitortemperaturechanges,andobservesafetyphenomenasuchasbulging,smoking,andignition.PART04加热试验Heatingtest四、加热试验Heatingtest考察电池高温安全，监测电压、电流、温度，评估热失控风险。Evaluatebatterysafetyathightemperatures,monitorvoltage,current,andtemperature,andassessthermalrunawayrisks.PART05温度循环试验Temperaturecyclingtest五、温度循环试验Temperaturecyclingtest模拟温度变化，检测电池稳定性，分析性能参数变化，确保安全使用。Simulatetemperaturevariations,testbatterystability,analyzeperformanceparameterchanges,andensuresafeusage.PART06挤压试验Compressiontest六、挤压试验Compressiontest评估电池受挤压安全性，监测电压电流，检查结构完整性及电解液泄漏。Evaluatebatterysafetyundercompression,monitorvoltageandcurrent,inspecttheintegrityofBroussonetiapapyriferaandcheckforelectrolyteleakage.3.电池一致性筛选SelectionBasedonBatteryUniformity《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》目录筛选电池容量SelectionofBatteryCapacityCONTENT筛选电池内阻SelectionofBatteryInternalResistance筛选电池电压SelectionofBatteryVoltage筛选电池自放电率SelectionofBatterySelf-DischargeRatePART01筛选电池容量SelectionofBatteryCapacity一、筛选电池容量SelectionofBatteryCapacity电池容量的重要性SignificanceofBatteryCapacity衡量电能存储能力，确保电池组一致性，对电动车性能与安全至关重要。Measuringelectricalenergystoragecapacityandensuringtheconsistencyofbatterypacksarecrucialtotheperformanceandsafetyofelectricvehicles.一、筛选电池容量SelectionofBatteryCapacity电池容量的重要性SignificanceofBatteryCapacity单体容量差异导致过充风险，影响寿命，放电不均降低整体效能，损害电池组性能。Differencesamongsingle-cellcapacitiesresultinovercharginghazards,affectlongevity;meanwhile,unevendischargelowerssystemefficacyandcompromisesthefunctionalityofthebatteryarray.一、筛选电池容量SelectionofBatteryCapacity容量筛选方法Capacity-BasedSortingProcess专业设备循环充放电测容量，严格控温25℃，筛选容量差异±0.5%内电池组。Professionalequipmentconductscycliccharge-dischargeteststomeasurecapacityunderstricttemperaturecontrolat25°C,selectingbatterypackswithcapacityvariationswithin±0.5%.PART02筛选电池内阻SelectionofBatteryInternalResistance二、筛选电池内阻SelectionofBatteryInternalResistance电池内阻影响ImpactofBatteryInternalResistance欧姆内阻源于材料电阻，极化内阻因电化学反应产生。Ohmicresistanceoriginatesfrommaterialresistivity,whilepolarizationresistancearisesfromelectrochemicalreactions.二、筛选电池内阻SelectionofBatteryInternalResistance电池内阻影响ImpactofBatteryInternalResistance内阻不一致致电流分配不均，增加热量，降低效率，加速老化，可能引发安全问题。Non-uniforminternalresistanceleadstounevencurrentdistribution,increasedheatgeneration,reducedefficiency,acceleratedaging,andpotentialsafetyhazards.二、筛选电池内阻SelectionofBatteryInternalResistance内阻筛选方法InternalResistanceScreeningMethod直流放电法与交流阻抗法DCDischargeMethod/ACImpedanceMethod内阻测量方法MethodsforMeasuringInternalResistance二、筛选电池内阻SelectionofBatteryInternalResistance内阻筛选方法InternalResistanceScreeningMethod内阻差异±10%内，确保电池组电流均匀分配。Cellswithinternalresistancevariationwithin±10%ensureuniformcurrentdistributionacrossthebatterypack.PART03筛选电池电压SelectionofBatteryVoltage三、筛选电池电压SelectionofBatteryVoltage电池电压一致性的意义heSignificanceofBatteryVoltageUniformity电池电压一致性BatteryVoltageUniformity充电不平衡，放电不充分，加速老化，降低循环寿命与能量利用。Poorbatteryvoltageuniformityleadstounbalancedcharging,incompletedischarging,acceleratedaging,andconsequentlyreducedcyclelifealongwithlowerenergyutilizationrates."三、筛选电池电压SelectionofBatteryVoltage电压筛选步骤VoltageScreeningProcedure确保电池50%SOC，统一充放电预处理，使用专业仪器测量电压，剔除偏差大电池，电压差异控于±5mV内。Ensurebatteriesat50%SOC,conductuniformcharge-dischargepretreatment,measurevoltageusingprofessionalinstruments,eliminatebatterieswithlargedeviations,andcontrolthevoltagedifferencewithin±5mV.PART04筛选电池自放电率SelectionofBatterySelf-DischargeRate四、筛选电池自放电率SelectionofBatterySelf-DischargeRate自放电率对电池性能的影响TheImpactofSelf-DischargeRateonBatteryPerformance自放电指电池未使用时电量自然减少，反映电池内部稳定性的关键指标。Self-dischargereferstothenaturallossofelectricchargewhenabatteryisnotinuse,anditisakeyindicatorreflectingtheinternalstabilityofthebattery.四、筛选电池自放电率SelectionofBatterySelf-DischargeRate自放电率对电池性能的影响TheImpactofSelf-DischargeRateonBatteryPerformance高自放电率致锂电存储中电量快速损失，影响效率与寿命，造成充电不平衡及容量衰减不均。Ahighself-dischargeratecausesrapidlossofelectricquantityduringlithiumbatterystorage,affectingefficiencyandlifespan,leadingtounevenchargingandnon-uniformcapacityfading.四、筛选电池自放电率SelectionofBatterySelf-DischargeRate自放电率筛选方法Self-dischargeratescreeningmethod01.自放电率测试Self-dischargeratetest电池充满电后，在恒温湿环境下定期测电压或容量，计算单位时间内电量损失，确定自放电率。Afterthebatteryisfullycharged,measureitsvoltageorcapacityregularlyunderconstanttemperatureandhumidityconditions.Thencalculatetheelectricquantitylossperunittimetodeterminetheself-dischargerate.四、筛选电池自放电率SelectionofBatterySelf-DischargeRate自放电率筛选方法Self-dischargeratescreeningmethod02.电池组筛选BatteryPackScreening测试一批电池自放电率，挑选相近的组成电池组，控制单体内差异，确保性能一致性，剔除高自放电率电池。Conducttestsontheself-dischargeratesforagroupofbatteries,pickouttheoneshavingcomparableratestoassembleintobatterypacks,managevariationsbetweenindividualunits,guaranteeuniformperformance,andremovebatteriesexhibitinghighself-dischargerates.4.涂布后质量涂层评价EvaluationofCoatingQualityAfterApplication《储能电池制造技术》《ManufacturingTechnologyofEnergyStorageBatteries》（一）涂布缺陷病Coatingdefectissues涂布后质量涂层评价EvaluationofCoatingQualityAfterApplication涂布后细长线状缺陷，由浆料流动性不均引起，需预处理浆料，调整粘度，维护涂布头。Slenderlineardefectsaftercoating,causedbyunevenslurryfluidity,requirepre-treatmentoftheslurry,viscosityadjustment,andmaintenanceofthecoatinghead.拉丝和细条道Wiredrawingandfinestriations（二）纵条道Stripedpattern涂布后质量涂层评价EvaluationofCoatingQualityAfterApplication沿极片纵向分布，与设备机械问题相关，需精确调试设备，优化流道设计，控制涂布参数。Distributedalongthelongitudinaldirectionoftheelectrodesheet,relatedtomechanicalequipmentissues,requiringpreciseequipmentdebugging,optimizedrunnerdesign,andcontrolle