Real-World References & Actionable Implementation
Moisture is one of the most underestimated failure drivers in lithium-ion cell manufacturing. Even brief dew point excursions can introduce residual moisture into electrodes, leading to gas generation, lithium plating, and long-term capacity fade. In Indian operating conditions—especially during monsoon seasons—robust dry room design and disciplined operational control are critical to maintaining consistent cell quality.
Key Real-World References & Actions
| Area |
Industry Reality |
Actionable Implementation |
| Dew Point |
–30°C to –35°C is common practice |
Alarm at –28°C, trip at –25°C |
| Temperature |
Affects slurry viscosity |
Maintain 25°C ±2°C |
| Air Changes |
20–50 ACH used in production |
Validate during commissioning |
| Pressurization |
Prevents moisture ingress |
Slight positive pressure |
| Dehumidification |
Desiccant systems handle monsoon load |
Redundant dehumidifiers |
| Human Load |
People introduce moisture |
Gowning + access control |
| Material Movement |
Transfers cause spikes |
Double-door airlocks |
| Moisture Testing |
Residual moisture impacts life |
KF testing per batch |
| Sensor Accuracy |
Drift causes false stability |
Quarterly calibration |
| Energy Usage |
Dry rooms consume maximum power |
Zone-based operation |
| Data Logging |
Excursions affect yield later |
BMS–MES integration |
| Contingency |
No SOP causes confusion |
Quarantine & re-dry SOP |
Practical Insight:
Plants that correlate dew point trends with electrode defect data are able to identify moisture-related issues early, reducing downstream scrap. Limiting personnel entry and improving material transfer discipline often yields greater moisture stability than increasing HVAC capacity alone.
