Gigafactory & Battery Manufacturing
Engineering Services India

Dry rooms are the defining engineering challenge of any Gigafactory. Cathode and anode electrode manufacturing typically requires dew point between −30°C and −40°C. Electrolyte filling and cell assembly can require below −40°C. KVRM designs the complete dry room HVAC system — from moisture load analysis through to BMS controls philosophy — achieving ISO 14644 classification targets alongside dew point control.

• Dew point analysis — determining target dew point class for each manufacturing zone
• Electrode manufacturing: dew point to −30°C to −40°C (ISO 14644 Class 5–6)
• Cell assembly / electrolyte filling: dew point to −40°C and below
• Dehumidification system selection — rotor dehumidifiers, dual-stage systems
• Moisture load analysis — building envelope, personnel, process loads
• Make-up air handling unit (MAHU) — pre-conditioning before dehumidification
• Recirculation air handling unit (RAHU) — internal loop dew point control
• Chilled water system design for dehumidification rotors and cooling coils
• HVAC load calculation — sensible heat, latent heat, process loads per zone
• Annual dry room energy consumption model
• Controls philosophy — dew point cascade control, pressurisation strategy
• BMS integration specification

Gigafactories require an extensive range of process utilities for cell manufacturing — each demanding specialist design to achieve the purity, pressure, and flow specifications required by battery production equipment. KVRM designs and coordinates all utility systems from source to point-of-use.

• Compressed dry air (CDA) — ultra-dry to ISO 8573 Class 1.2.1 (−70°C dew point)
• Deionised / ultrapure water (DI water / UPW) — generation and distribution loop design
• Vacuum system — process vacuum for slurry mixing, coating, calendering, and drying
• Chilled water and process cooling water (PCW) loops — hydraulic analysis (AFT Fathom)
• Nitrogen gas (N₂) — blanketing for electrode handling, dry rooms, and electrolyte systems
• Argon (Ar) — inert atmosphere for specific cell chemistry processes
• Industrial gas storage and distribution — bulk storage, vaporisers, pressure regulation
• HT/LT electrical distribution — power supply for all process equipment
• Earthing and ESD (electrostatic discharge) protection — anti-static flooring, bonding

N-Methyl-2-pyrrolidone (NMP) is the primary solvent used in cathode electrode slurry preparation. During the coating and drying process, NMP evaporates and must be captured — both for environmental compliance and for solvent reuse economics. NMP recovery is a regulatory requirement in India and internationally, with recovery rates typically targeted at 99%+.

• Condensation-based NMP recovery — solvent vapour condensed from dryer exhaust air
• Thermal oxidation (TO) / Regenerative Thermal Oxidiser (RTO) — for lower-concentration streams
• Recovery system selection — condensation vs RTO based on NMP concentration and volume
• Dryer exhaust ductwork and capture hood design
• NMP concentration profiling — dryer inlet, mid-point, and outlet concentrations
• ATEX / IECEx hazardous area classification for NMP handling zones
• Recovered NMP purification and reuse system design
• Environmental compliance documentation — emissions limit compliance

Formation and ageing is the most energy-intensive step in battery cell manufacturing — and the most demanding from an infrastructure perspective. Cells undergo initial charge/discharge cycles at precisely controlled temperature (typically 25°C ±1°C). KVRM designs both the electrical infrastructure and the thermal management system for formation and ageing rooms.

• Temperature uniformity design — ±1°C across formation and ageing chambers
• HVAC system — precision temperature and humidity control for formation rooms
• Regenerative formation cycling infrastructure — energy recovery from discharge cycles
• Formation cycler power supply — high-current DC distribution design
• Electrical load scheduling — formation and ageing represent 10–20% of plant energy
• Cooling load calculation — heat rejection from charge/discharge cycles
• Safety systems — cell overpressure detection, thermal runaway monitoring
• BMS integration — temperature monitoring and alarm system for all chambers

Lithium-ion battery fires present unique hazards — thermal runaway, toxic gas venting (HF, CO, VOCs), re-ignition risk, and extreme heat release rates. KVRM designs NFPA 855 compliant fire protection for all battery manufacturing and storage areas — from cell manufacturing to finished module storage.

• NFPA 855 compliance — Standard for Stationary Energy Storage Systems
• Fire protection strategy — suppression, ventilation, separation, and detection philosophy
• Automatic sprinkler system design (NFPA 13) for manufacturing and storage areas
• Rack sprinkler / in-rack suppression for battery module and pack storage
• Gas venting and exhaust system for thermal runaway events
• Smoke and gas detection — early warning aspirating smoke detection (VESDA)
• Fire barrier and compartmentation strategy for high-energy storage zones
• Thermal runaway cascade prevention — inter-cell and inter-rack separation

Some battery manufacturing processes require particulate contamination control in addition to dew point control — particularly cell assembly (winding, stacking) and electrolyte filling. KVRM designs the complete classified environment to ISO 14644, integrated with the dry room HVAC system.

• ISO 14644 particle classification — Class 5 to Class 7 for applicable zones
• Combined dew point + particulate control — integrated HVAC design
• Unidirectional airflow design for highest cleanliness zones
• Differential pressure cascade — dry room to clean room to general production
• HEPA H14 filtration where particle contamination control required
• Material pass-through design — airlocks, gowning rooms, ULPA tunnels
• Design Qualification (DQ) documentation support

Gigafactories are among the most energy-intensive manufacturing facilities built today. Energy management is both an operational cost issue and a critical ESG metric — battery manufacturers increasingly report production-normalised energy consumption (kWh/kWh produced) as a key sustainability indicator.

• Total plant energy model — production-normalised energy consumption targets
• Dry room energy optimisation — heat recovery wheel, free cooling hours
• Formation and ageing energy — charge/discharge regenerative efficiency
• Renewable energy integration — rooftop solar PV sizing and yield modelling
• ISO 50001 energy management system implementation support
• BEE Designated Consumer compliance support (if applicable)
• Carbon footprint — Scope 2 (purchased electricity) reduction roadmap
• EU Battery Regulation 2023/1542 — carbon footprint declaration support

End-to-end project management for Gigafactory construction as the independent owner’s representative — protecting the client’s interests from pre-FEED through dry room performance qualification and handover.

• Pre-FEED and FEED PMC — basis of design, contractor selection, value engineering
• EPC oversight — schedule management, QA/QC, cost control, site supervision
• Dry room HVAC qualification — dew point performance testing and sign-off
• Utility system commissioning — UPW, CDA, chilled water, vacuum, gas systems
• NMP recovery system commissioning and performance verification
• Formation room temperature uniformity testing and acceptance
• Variation order management — independent assessment of EPC contractor claims
• Mechanical completion and handover documentation management