Walk-In Chambers for Electric Vehicle Testing
Walk-in chambers are insulated environmental enclosures large enough for personnel and equipment access, enabling electric vehicle testing of full systems—vehicles, powertrains, battery modules—under controlled temperature and humidity. Indeecon's modular walk-in chambers range from personnel-accessible standard units (2–12 m³) to drive-in systems (20–100+ m³) capable of testing full vehicles, EV battery packs, and large assemblies. Modular cam-lock PUF construction assembles on-site in 2–5 days with ±1°C uniformity across 100+ m³ volumes via 100+ air exchanges per hour and floor loading rated to 3,000 kg/m². Fast-Ramp configurations achieve 5°C/min thermal transitions per SAE J2030 and MIL-STD-810.
What Makes Our Walk in Chambers / Walk in Environmental Chamber Stand Out
- Large capacity for bulk and oversized items
- Customisable temperature and humidity ranges
- High-performance PUF insulated panel construction
- Advanced PLC based control with data logging
- Walk-in accessibility with heavy-duty floor
Key Features
- Modular Cam-Lock PUF Construction: Tongue-and-groove panels with thermal-bridge-free assembly — on-site build-up in 2–5 days, no permanent installation required
- Heavy-Duty Floor Reinforcement: Stainless steel 304 checkered plates support full vehicles (up to 3,000 kg/m²) and EV battery packs without floor deflection
- 100+ Air Exchanges per Hour: Turbo-blower with mist elimination maintains ±1°C uniformity across chambers up to 100+ m³ — prevents stratification in large volumes
- Advanced Humidity Control: 10–95% RH standard (5–98% RH in performance models) with dew-point sensing and dual-compressor design for rapid ramp cycles
- Fast-Ramp Option: Up to 5°C/min thermal transitions — welded high-temp steel construction for ALT and thermal shock protocols
- Personnel Safety System: Interior door release mechanism, emergency audible alarm, and main kill switch — disables all heating/cooling for immediate safe exit
- Temperature Range: Standard S-Series -40°C to +85°C; Drive-In L-Series -20°C to +85°C; Fast-Ramp -70°C to +150°C
- Optional: Multi-zone sensor arrays, cloud data logging with real-time alerts, IoT compliance reporting
What Is a Walk-In Chamber?
A walk-in chamber is a large-format environmental chamber built for personnel and equipment access, used to test full systems — vehicles, powertrains, battery packs, and large assemblies — under controlled temperature and humidity conditions. Unlike a benchtop environmental chamber, a walk-in hot and cold chamber allows technicians to enter, load, and instrument test articles directly inside the test volume.
Walk-in chambers are widely used for electric vehicle testing, where full vehicles or battery packs must be exposed to extreme temperature and humidity cycles that replicate real-world climate conditions — from arctic cold starts to desert heat soak.
Walk-In Chamber vs. Humidity Test Chamber vs. Standard Environmental Chamber
| Feature | Walk-In Chamber | Humidity Test Chamber | Standard Environmental Chamber |
|---|---|---|---|
| Access | Personnel walk-in | Reach-in / benchtop | Reach-in / benchtop |
| Typical Volume | 2 m³ – 100+ m³ | 0.1 m³ – 2 m³ | 0.1 m³ – 1 m³ |
| Best For | Full vehicles, EV battery packs, large assemblies | Humidity-focused component testing | Small components, cells, PCBs |
| Floor Loading | Up to 3,000 kg/m² (reinforced) | N/A | N/A |
| Common Use Case | Electric vehicle testing, drive-in validation | Moisture ingress, corrosion pre-screening | R&D, QC sampling |
For electric vehicle testing specifically, a walk-in hot and cold chamber with reinforced flooring and drive-in access is the standard choice, as it's the only format large enough to accommodate a full vehicle or battery pack while replicating both temperature and humidity extremes simultaneously.
Compliance Standards
- SAE J2030 — Environmental Limits and Testing Requirements for Electronic Equipment in Heavy-Duty Vehicles
- ASTM E691 — Round-Robin Testing for Environmental Chambers; precision and bias assessment
- MIL-STD-810H — DoD Environmental Engineering Test Method Standard
- ISO 17025 / NABL — Chamber uniformity mapping, temperature/humidity calibration, and traceability documentation
Applications
- Automotive Components & Full Vehicle Testing: Door seals, HVAC, ECMs, infotainment systems, and full vehicle validation per OEM protocols
- EV Battery Testing / Electric Vehicle Testing: BMS qualification, high-voltage harness testing, module-level thermal cycling for cell safety validation
- Aerospace Large Assemblies: Flight control surfaces, avionics racks, and structural panels under combined thermal and humidity stress
- Electronics & Power Distribution: Industrial inverters, power supplies, and converter reliability under combined temperature and humidity stress
- Contract Testing Laboratories: High-throughput multi-client capability with certified uniformity, SPC data logging, and audit trail documentation
- R&D Prototype Durability: Accelerated life testing (ALT) and failure mode analysis for automotive and aerospace components
Safety Features
- Independent over-temperature safety limit with alarm
- Pressure relief ports for rapid temperature transitions
- Personnel safe-release hardware and emergency alarms
- Electrical safety circuit with phase and motor protection
Optional Features
- Inert gas purging and oxygen concentration monitoring
- Multi-channel data logging and remote SCADA access
- Customised cable ports and passthroughs for test items
- Heavy-duty reinforced floor for vehicle or pallet loading
How It Works
- Load test items into the chamber using a trolley or pallet jack
- Configure the environmental test profile on the PLC touchscreen
- The system regulates cooling, heating, and moisture according to the setpoints
- Integrated airflow systems ensure uniform conditions across the entire room
- Monitor and record data for the duration of the environmental cycle
Datasheets & Resources
- Temperature Range
- Humidity Range
- Internal Volume
Frequently Asked Questions
Q: What is the difference between Standard and Large/Drive-In series?
A: Standard (S-Series, 2–12 m³) accommodates benchtop equipment and small assemblies with personnel access via door. Large (L-Series, 20–100+ m³) features drive-in access and reinforced floor (3,000 kg/m²) for full-vehicle and engine testing.
Q: How accurate is the ±1°C uniformity specification?
A: Uniformity is measured per ASTM E691 across 9–16 sensor points distributed throughout the chamber at mid-cycle. Achieved via 100+ air exchanges/hour and optimized return-air ducting.
Q: Can you retrofit an existing chamber for higher ramp rates?
A: Partial retrofits (improved AHU, control upgrade) are possible but limited by chamber mass and compressor capacity. For 5°C/min ramps, a new welded Fast-Ramp design is recommended.
Q: Do you provide ISO 17025 calibration certificates?
A: Yes. Our NABL-accredited lab offers annual chamber uniformity mapping, control sensor calibration, and traceability documentation as part of the comprehensive service plan.
Q: What is the typical energy consumption for a 50 m³ chamber?
A: 15–25 kW (heating) + 8–12 kW (cooling compressors + AHU) depending on thermal load and ramp rate. We provide detailed power budgets during design phase.
Plan Your Walk-In Chamber Installation
Our thermal engineering team conducts site surveys, designs custom chamber layouts, and provides turnkey installation with NABL calibration. Contact us for a feasibility assessment.
What's the difference between a walk-in chamber and a standard environmental chamber?
A walk-in chamber is a large-format environmental chamber built for personnel access, full vehicles, or oversized assemblies — typically 2 m³ to 100+ m³. A standard environmental chamber (benchtop or reach-in) is sized for smaller components, cells, or subassemblies and doesn't allow interior access.
Can a walk-in chamber function as both a humidity test chamber and a temperature chamber?
Yes. Indeecon's walk-in chambers are dual-function by design, combining temperature control (-70°C to +150°C depending on series) with humidity test chamber capability (10–95% RH standard, 5–98% RH in performance models) in a single enclosure.
Is a walk-in hot and cold chamber suitable for electric vehicle testing?
Yes. Walk-in hot and cold chambers with reinforced flooring (up to 3,000 kg/m²) and drive-in access are specifically used for electric vehicle testing, including full-vehicle thermal soak, battery pack validation, and BMS qualification under real-world temperature extremes.
What size walk-in chamber do I need for EV testing?
Sizing depends on the test article: compact walk-in chambers (2–12 m³) suit subassemblies and battery modules, while drive-in L-Series chambers (20–100+ m³) are required for full electric vehicle testing where the vehicle itself must fit inside the chamber.
How is humidity controlled in a walk-in environmental chamber?
Humidity test chamber control is achieved via dew-point sensing and dual-compressor design, maintaining 10–95% RH with rapid ramp capability — critical for combined temperature/humidity stress testing per SAE J2030 and MIL-STD-810H.
Related Guides
Continue your evaluation with the most relevant master pages, comparison guides, and technical resources for this product family.
- Environmental Test Chamber Guide — Overview of chamber types, standards, and use-case fit.
- Environmental Chamber Selection Guide — Choose the right chamber by range, specimen size, and standard.
- XLPE Curing Automation Guide — Process-engineering guide for curing automation and throughput planning.