YL-GQ-8000E Battery Walk-in Low-Pressure Environmental Test Chamber

Overview

The YL-GQ-8000E Battery Walk-in Low-Pressure Environmental Test Chamber is an engineered solution for simulating high-altitude atmospheric conditions during functional and safety validation of electric vehicle (EV) traction battery packs and energy storage systems. Designed in accordance with ISO 16750-3, GB/T 31467.3, and UN GTR No. 20 Annex 4 requirements, the chamber enables controlled exposure to low-pressure environments—down to 10 kPa absolute pressure (equivalent to ~30,000 m altitude)—while maintaining precise, independent regulation of temperature across a wide operational range (−50 to +100 °C). Its walk-in architecture accommodates full-size battery modules, complete pack assemblies, or even prototype battery-integrated vehicles, supporting both static and dynamic testing protocols—including 1C discharge under depressurized thermal soak per China’s GB 38031-2020 Clause 7.12.2.

Key Features

• Reinforced structural integrity: 200 × 200 × 200 cm internal workspace with thickened SUS#304 stainless-steel interior and dual-layer insulated cold-rolled steel exterior (white epoxy finish) for long-term corrosion resistance and thermal stability.
• High-fidelity pressure control system: Dual-stage vacuum pump assembly with PID-regulated mass flow control, achieving ≤5-minute depressurization from ambient (101.3 kPa) to 10 kPa at −50 °C, and maintaining pressure deviation within ±2 kPa (10–40 kPa), ±5% (40–2 kPa), or ±0.1 kPa (2–1 kPa).
• Independent thermodynamic regulation: High-efficiency refrigeration/heating circuitry delivers consistent cooling (1 °C/min avg.) and heating (3 °C/min avg.) rates, with temperature resolution of 0.1 °C and uniformity ≤2.0 °C (unloaded, steady-state, ambient pressure).
• Integrated safety architecture: Comprehensive protection suite includes over-pressure/over-temperature cutoffs, earth-leakage detection, motor overload monitoring, real-time acoustic-optic alarms, and optional explosion-proof enclosure rating (per IEC 60079-0) for hazardous gas environments.
• Modular instrumentation interface: Standard analog/digital I/O ports support synchronized acquisition of voltage, surface temperature, and pressure data from up to 32 external sensors—enabling correlation with BMS telemetry during live discharge cycles.

Sample Compatibility & Compliance

The YL-GQ-8000E accommodates battery systems conforming to GB/T 34013, ISO 12405, and SAE J2929 dimensional envelopes. Its open-floor layout and reinforced floor load capacity (>1,500 kg/m²) permit installation of battery carriers, test sleds, or small EV chassis (up to two standard sample vehicles included). All operational parameters meet GLP-aligned traceability standards: temperature and pressure controllers are NIST-traceable, calibration certificates available upon request. The system supports audit-ready documentation for ISO 9001, IATF 16949, and FDA 21 CFR Part 11-compliant electronic records when paired with optional validated software modules.

Software & Data Management

Control and monitoring are executed via a 10.4-inch color TFT touchscreen HMI running embedded Linux OS with real-time logging at user-defined intervals (100 ms to 60 s). Data export formats include CSV, Excel-compatible .xlsx, and binary .tdms for post-processing in MATLAB or Python. Optional Ethernet/IP or Modbus TCP connectivity enables integration into centralized lab management systems (LIMS) or MES platforms. Audit trail functionality logs all parameter changes, operator logins, and alarm events with timestamp and user ID—fully compliant with GLP/GMP data integrity requirements. Remote supervision via secure HTTPS portal is supported with TLS 1.2 encryption and role-based access control.

Applications

• Altitude simulation for EV battery certification (GB 38031, UN R100, ECE R100-02).
• Thermal runaway propagation studies under reduced oxygen partial pressure.
• Seal integrity verification of battery enclosures and coolant manifolds at sub-atmospheric conditions.
• Electrolyte vapor pressure assessment and outgassing behavior analysis.
• Validation of BMS sensor accuracy and fault response logic during rapid decompression events.
• Pre-conditioning of battery modules prior to vibration, shock, or mechanical abuse testing.

FAQ

What altitude does 10 kPa represent?
Atmospheric pressure of 10 kPa absolute corresponds to approximately 30,500 meters (100,000 ft) above sea level—well beyond typical aircraft service ceilings, enabling conservative margin testing for aerospace-grade battery systems.
Can the chamber perform combined temperature–pressure cycling?
Yes. The controller supports programmable multi-segment profiles with simultaneous ramping of temperature and pressure, including dwell steps, linear ramps, and hold-to-stabilize logic per ISO 16750-3 Annex C.
Is the system suitable for testing lithium metal or solid-state batteries?
Absolutely. The inert interior surface, absence of organic gaskets, and optional nitrogen purge capability minimize reactivity risks—making it appropriate for next-generation chemistries requiring ultra-dry, low-oxygen test environments.
How is pressure calibrated and verified?
Each unit ships with factory calibration using a NIST-traceable quartz reference transducer (±0.05% FS). Field verification kits and annual recalibration services are available through authorized Yuelian service centers.
Does the chamber meet electromagnetic compatibility (EMC) requirements for lab use?
Yes. The power distribution and control cabinet comply with EN 61326-1 (industrial environment) and pass conducted/radiated emissions testing per CISPR 11 Group 1, Class A limits. Full EMC test reports are supplied with delivery documentation.