储能系统制造缺陷概述.pdf

1、PV ModuleTech EU 2025BESS manufacturing defect overviewGeorge TouloupasVP,ESG and New ServicesINTERTEK CEA HAS CONDUCTED QUALITY AUDITS ON OVER 65 GWH OF LITHIUM-ION BATTERY ENERGY STORAGE PROJECTS SINCE 2018Copyright 2025 Intertek CEA2700+inspections in 70+BESS factories70%of tier 1*BESS cell manuf

2、acturers audited worldwide 3000+total manufacturing issues identified*Tier 1:definition is based on BMI(Benchmark Mineral Intelligence)USAChinaIndiaVietnamSouth KoreaHere are our key findings from our 2024 inspections.Locations of factory auditsIN 2024 THE MAJORITY OF IDENTIFIED QUALITY ISSUES WERE

3、AT THE SYSTEM LEVELSYSTEM-LEVEL DEFECTS ACCOUNTED FOR 72%OF ALL DEFECTS IDENTIFIED IN 2024,UP FROM 48%.MANY OF THESE DEFECTS POSE SERIOUS RISKS TO BESS SAFETY,RELIABILITY,AND PERFORMANCE.Copyright 2025 Intertek CEA330%23%48%15%13%72%0%10%20%30%40%50%60%70%80%Cell-level defectsModule-level defectsSys

4、tem-level defectsShare of QA Findings by Manufacturing StagePrevious Years202428%of systems had defects in fire detection and suppression,which are critical for preventing runaway fires.19%of systems had faulty auxiliary circuit panels,increasing the risk of control system failure.15%of systems had

5、thermal management defects,raising the risk of overheating and accelerated degradation.6%of systems failed capacity tests directly impacting energy delivery and project performance.Safety-critical failures:Performance failures:System-level defectsDistribution of Total Findings4The large number of sy

6、stem-level issues is mainly caused by the following contributors:The BESS integration process is highly manual and labor-intensive,with weaker quality control often carried out by outsourced integration companies who have little incentive to ensure long-term performance.The rapid product iteration p