>> P.6
ChinaGBStandards—SafetyTestingandRelatedProductsTestmethodStandardConditionsCompliantproductGB/T31485-2015SafetyRequirementsandTestMethodsforTractionBatteriesforElectricVehicles6.2:Cell6.3:ModuleGB/T31467.3-2015Lithium-ionbatterypackandsystemforelectricvehiclesThirdpart:SafetyRequirementsandTestingMethods6.2.2/6.3.2Overdischarge6.2.3/6.3.3Overcharge6.2.4/6.3.4Externalshortcircuit6.2.6/6.3.6Heating6.2.7/6.3.7Crush6.2.10/6.3.10Thermalcycle6.2.11/6.3.11Lowpressure7.1Vibration7.6Crush7.7Temperatureshock7.8Temperature/humiditycycle7.12Highaltitude7.13Overtemperatureprotection7.14Shortcircuitprotection7.15Overchargeprotection7.16OverdischargeprotectionAftercharging,1Cdischarge,90minutesAftercharging,1Ccharge,Cell:Rateduppervoltagelimit/Module:1.5timestherateduppervoltagelimitofanycellor1hrAdvancedSafetyTesterAftercharging,Shortcircuitat5mΩorlessshort-circuitresistance,10minutesAftercharging,Heatto130°Cat5°Cperminute,Holdfor30minutesAftercharging,Crushusingø75mmsemi-cylindricaljig,Crushspeed:5±1mm/s,Cell:Crushto100kNorupto30%Module:Crushpressureof1000timesthebatteryweightAftercharging,25°C→–40°C→25°C→85°C→25°C,5cyclesTemperatureChamberEnvironmentalStressChamberRapid-RateThermalCycleChamberAdvancedSafetyTesterPlatinousSeriesTemperatureChamberWalk-InTypeTemperatureChamberAftercharging,Holdbelowroomtemperatureat11.6kPaorlessfor6hoursLowPressureLowTemperatureChamberThreedirections,5to200Hz,21hoursineachdirectionTemperature&VibrationCombinedEnvironmentalTestChamberAftercharging,Crushusingø75mmsemi-cylindricaljig,Crushto100kNorupto30%AdvancedSafetyTesterAftercharging,–40±2°C⇔85±2°Cfor5cycles,Temperaturechangewithin30minutesLargeCapacityThermalShockChamberWalk-InTypeTemperature&HumidityChamberLowPressureLowTemperatureChamberAdvancedSafetyTesterAftercharging,20°C⇔80°C95%rhfor5cyclesAftercharging,afterholdingatatmosphericpressureof4000mabovesealevelfor5hours,1CdischargeCharge-DischargetestatatratedmaximumtemperatureinBCUoperationstateExternalshortcircuitatratedmaximumtemperatureinBCUoperationstate,20mΩorless,10minutes1CchargeinBCUoperationstate,Stopat1.2timestheratedupperlimitvoltage,SOC130%,ortheratedupperlimittemperature+5°C1Cdischarge(Max.400A)inBCUoperationstate,30minutesormore,Stopat25%thelowerlimitoftotalvoltageortheratedupperlimittemperature+5°CAccordingtoin-houseresearchasofOctober,2018.5
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