Jianhu JH-Series Explosion-Proof Lithium Battery Environmental Test Chamber

Overview

The Jianhu JH-Series Explosion-Proof Lithium Battery Environmental Test Chamber is an engineered precision system designed for safe, repeatable, and standards-compliant environmental simulation of lithium-ion and lithium-metal battery cells, modules, and packs under extreme thermal and humidity conditions. Built to address the stringent safety and metrological requirements of battery R&D, quality assurance, and regulatory validation, this chamber integrates dual-stage refrigeration, PID-controlled electric heating, steam-based humidification, and condensate-driven dehumidification—all within a certified explosion-proof enclosure (Class I, Division 1, Groups C & D per NEC/UL 60079-1 and GB 3836.1–2021). Its core function is to replicate real-world operational and storage environments—including sub-zero cold starts (−40 °C), high-temperature cycling (up to +150 °C), and controlled humidity ranges (10–98% RH)—while maintaining continuous intrinsically safe operation during potential off-gas events or thermal runaway scenarios. The chamber’s architecture complies with the fundamental environmental stress testing principles outlined in IEC 62660-2, UN 38.3, GB/T 31485–2015, and ISO 12405-2, ensuring data integrity for functional, safety, and lifetime evaluation protocols.

Key Features

• Explosion-proof rated chamber body with reinforced stainless-steel interior, ATEX/IECEx-compatible electrical interface, and flameproof viewing window
• Dual-refrigeration system using environmentally compliant R404A/R23 cascade compressors for rapid cooling ramp rates (≥3 °C/min from 25 °C to −40 °C)
• PID-controlled electric heating elements with over-temperature cut-off and independent thermal fusing
• Steam-generation humidification system with deionized water reservoir and automatic level monitoring
• Cold-surface condensate dehumidification with integrated drain management and anti-freeze protection
• High-efficiency forced-air circulation via axial fans and optimized baffle-guided airflow path—achieving ≤±1.0 °C temperature uniformity and ≤±3% RH humidity uniformity across working volume (per IEC 60068-3-5)
• Embedded 7-inch color touchscreen HMI with multi-level user access, real-time trend graphs, and configurable alarm thresholds

Sample Compatibility & Compliance

The JH-Series accommodates cylindrical (18650, 21700), prismatic, and pouch-format Li-ion/Li-metal samples up to 500 mm × 500 mm × 400 mm (W×D×H) in standard configurations. Internal mounting rails, cable feedthroughs (IP65-rated), and optional gas venting ports support integration with external battery cyclers, voltage/current monitors, and off-gas analyzers (e.g., FTIR or GC-MS). All control logic and sensor outputs comply with GLP/GMP data integrity requirements: audit trails are time-stamped, non-erasable, and exportable in CSV/PDF; electronic signatures meet FDA 21 CFR Part 11 criteria when paired with validated software packages. The chamber satisfies mechanical and environmental test prerequisites in UL 1642, IEEE 1625/1679, and GB 38031–2020 for electric vehicle traction batteries—including thermal shock, high-temperature storage, low-temperature discharge, and humidity exposure sequences.

Software & Data Management

The embedded controller supports local data logging at user-defined intervals (1 s to 60 min) with onboard storage for ≥30 days of full-resolution data (temperature, humidity, setpoints, alarms, door status). Optional LAN/Wi-Fi connectivity enables remote supervision via Jianhu’s proprietary LabControl Suite—a Windows-based application offering real-time multi-chamber monitoring, automated test sequence scripting (per IEC 61851-23), statistical process control (SPC) charting, and PDF report generation with digital signature fields. All logged datasets include metadata traceable to NIST-traceable calibration certificates for Pt100 temperature sensors (class A, ±0.15 °C) and capacitive RH sensors (±2% RH, 20–80% RH range). Firmware updates are delivered via encrypted USB key with SHA-256 verification to ensure supply chain integrity.

Applications

• Accelerated life testing of EV battery modules under combined thermal-humidity stress profiles
• Safety validation per UN 38.3 T.5 (temperature cycling) and T.6 (thermal abuse)
• Electrolyte volatility and SEI stability assessment across −20 °C to +85 °C gradients
• Humidity-induced corrosion screening of aluminum current collectors and nickel-rich cathodes
• Pre-conditioning of battery packs prior to mechanical shock, vibration, or crush testing
• Calibration and verification of reference sensors used in battery management system (BMS) development

FAQ

Does the chamber support programmable ramp-soak profiles with humidity coupling?

Yes—the controller allows simultaneous definition of temperature and humidity setpoints across up to 99 segments, with linear or stepwise transitions and hold durations from 1 minute to 999 hours. Humidity setpoints are automatically disabled below 0 °C to prevent icing.
What calibration documentation is provided at shipment?

Each unit ships with a factory calibration certificate covering temperature (−40 °C to +150 °C) and humidity (20–80% RH) at three spatial points (center, top corner, bottom corner), traceable to CNAS-accredited laboratories.
Can the chamber be integrated into an existing MES or LIMS environment?

Yes—Modbus TCP and OPC UA server options are available for bidirectional communication with enterprise manufacturing systems, enabling automatic job dispatch, result ingestion, and compliance reporting.