Vehicle Sunlight Simulation Test Chamber
The Full Vehicle Sunlight Simulation Test Chamber is a high-precision environmental testing facility designed to replicate intense solar radiation and extreme climate conditions. By integrating a full-spectrum lighting system with precise temperature and humidity controls, this chamber allows you to evaluate how entire vehicles or large-scale automotive components respond to prolonged sunlight exposure. It provides a controlled laboratory environment to assess material degradation, thermal expansion, and functional reliability under peak solar loads.
Applications
Full Vehicle Sunlight Simulation Test Chamber is designed to evaluate the aging performance of complete assemblies or entire vehicles under sunlight exposure. Users can assess changes in performance after irradiation, including alterations in shape, color, gloss, texture, strength, and various thermal expansion results. Additionally, it tests key metrics such as vehicle starting capability, motor performance, and overall air conditioning functionality under solar radiation.
Standards
GB/T 12535-2007 Test Methods for Starting Performance of Automobiles
GB 11556-2009 Defrosting and Demisting Test
GB/T 18297-2001 (Reference) Motor Performance Test
GB/T 2423.24-1995 Solar Radiation Test
GB/T 2423.3-2006 Test Method for Constant Humidity and Heat
GB/T 12782-2007 Requirements and Test Methods for Automotive Heating Performance
QC/T 658-2000 Test Method for Automotive Air Conditioning System Performance
Features
1. This vehicle-level solar simulation test chamber is designed for performance testing of electric vehicles with motor power ≤150kW, providing environmental simulation conditions ranging from -20°C to +60°C.
2. Functionality and volume can be customized according to different vehicle models and testing standards.
Parameters
| Category | Specifications |
|---|---|
| Temperature Control Range | -20°C ~ +60°C |
| Humidity Range | Relative humidity: 30% ~ 95%, no condensation in the low-temperature test chamber• Without illumination: 30% ~ 95% RH• With illumination: 30% ~ 80% RH |
| Condition Control | a. Cooling Time• 25°C ~ -20°C: ≤ 85 min (no load)• 60°C ~ 25°C: ≤ 40 min (no load)b. Heating Time• -20°C ~ 25°C: ≤ 50 min (no load)• 25°C ~ 60°C: ≤ 50 min (no load)c. Temperature Fluctuation• ≤ ±0.5°C (no load)d. Temperature Uniformity• ≤ ±1.5°C (no load)e. Temperature Deviation• ≤ ±2.0°C (with load, measured at vehicle front air inlet, roof, left and right sides) |
| Illumination System | a. Infrared Radiation Lamps• Working ambient temperature: -20°C ~ 60°C• Maximum radiation intensity: 1200±25W/m², uniformity: ±10%• Adjustment range: 30% ~ 100%b. Simulated Lamps• Uses two-terminal linear medium-wave infrared simulation lamps• Service life: ≥ 5000h (radiation intensity remains stable during this period)c. Illumination Adjustment• Automatically and manually adjustable via temperature control on the vehicle surfaced. Projection Area & Movement• Projection area: 5000mm × 2500mm (L×W)• Vertical movement distance: Minimum 2200mm, maximum 3000mm (distance from the lower surface of the lamp to the chamber bottom) |
Accessories
1.Solar Simulation Array: Vertically adjustable lamp rack with medium-wave IR lamps.
2.Humidity Control System: Includes a high-pressure water spray and dehumidification unit.
3.Sensor Package: High-precision temperature and humidity sensors, plus pyranometers for radiation monitoring.
4.Vehicle Interface Port: Sealed pass-throughs for vehicle exhaust and data cables.
5.Safety System: Over-temperature protection, emergency stop, and smoke detection alarms.
Test Procedures
1. Equipment and Sample Preparation
Equipment Inspection: Verify that the solar simulator chamber's irradiance (1000 W/m²), temperature (-40°C to 110°C), humidity (5%–95% RH), and air velocity (0.5–10 m/s) parameters comply with standards.
Sample Installation: Position the test vehicle at the chamber center, ≥0.3m from chamber walls, with ≥0.76m distance from radiation lamps.
2. Test Implementation
Cycle Test:
Cycle Count: Minimum 3 cycles, maximum 7 cycles, each lasting 24 hours.
Irradiance Control: Adjust in segments or continuously to maintain constant total energy.
Temperature Regulation: Set ambient and radiation temperatures according to test requirements.
Humidity Regulation: Control surface humidity via a water spray system.
Steady-State Test:
Cycle Count: Determined by exposure duration (e.g., 4 cycles for a 10-day test).
Parameter Settings: Maintain stable irradiance, temperature, and humidity.
3. Performance Testing
Initial Inspection: Record specimen appearance, temperature sensor data, and operational performance before testing.
Intermediate Inspection: Conduct visual inspection, dimensional measurement, and electrical testing at peak temperature.
Final Inspection: Evaluate performance changes post-testing to ensure compliance with product specifications.
FAQ
1. What safety measures are in place for testing electric vehicles (EVs)?
For EVs, the chamber can be equipped with specialized venting systems to handle potential battery off-gassing and integrated fire suppression systems. The control system also monitors vehicle surface temperature to prevent thermal runaway during high-radiation tests.
2. Is it possible to perform tests that involve driving the vehicle inside the chamber?
The standard chamber is designed for static environmental testing. However, for motor and AC performance tests, the chamber can be integrated with a chassis dynamometer (roller) to simulate driving loads while under solar radiation.
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