Jianhu DVX-EB Series Explosion-Proof Environmental Test Chamber for Battery, Power Electronics & Semiconductor IC Testing

Overview

The Jianhu DVX-EB Series Explosion-Proof Environmental Test Chamber is an engineered solution for accelerated reliability validation of lithium-ion batteries, power electronic modules (e.g., IGBTs, SiC MOSFETs), and semiconductor integrated circuits under rigorously controlled thermal and humidity stress conditions. Built upon a dual-wall stainless-steel chamber architecture with intrinsically safe electrical routing, flameproof viewing windows, and pressure-relief venting, the system conforms to Class I, Division 1 hazardous location requirements per IEC 60079-0 and IEC 60079-1. Its core function is to replicate real-world environmental extremes—including rapid thermal cycling, sustained high-humidity exposure, and low-temperature storage—while maintaining operational integrity during potential off-gas events or internal cell venting. The chamber employs a cascade refrigeration system with environmentally compliant R404A/R23 mixed-refrigerant stages, enabling stable operation across −70 °C to +150 °C without mechanical or thermal shock to test specimens. Integrated PID-controlled heating, humidification (optional), and dehumidification subsystems ensure traceable, repeatable profiles aligned with international battery safety standards such as UN 38.3, IEC 62133, UL 1642, and GB 31241.

Key Features

• Explosion-proof certified enclosure (ATEX/IECEx-compliant design) with reinforced borosilicate viewport, explosion-resistant lighting, and spark-free internal components
• Dual-stage compressor refrigeration system delivering stable sub-zero operation down to −70 °C with ≤45 min cooling ramp from ambient
• Precision temperature control with ±0.5 °C stability and ±2.0 °C uniformity across working volume; humidity control optional (10–98% RH, ±2% RH accuracy)
• Programmable multi-segment thermal/humidity profiles supporting complex test sequences per IEC 60068-2-14 (thermal shock) and IEC 60068-2-30 (damp heat cyclic)
• Real-time monitoring of chamber pressure, internal gas composition (O₂, CO, H₂ optional sensor integration), surface temperature, and specimen voltage/current via isolated analog/digital I/O ports
• Modular interior configuration with customizable mounting rails, cable feedthroughs (IP67-rated), and non-reactive 304 stainless-steel work surfaces

Sample Compatibility & Compliance

The DVX-EB Series accommodates cylindrical, prismatic, and pouch-format Li-ion cells (up to 20 Ah), battery modules (≤12 V, ≤100 A), power converter stacks (e.g., EV inverter assemblies), and bare die or packaged semiconductor ICs (including GaN and SiC devices). Chamber interiors are compatible with standard battery test fixtures, thermal interface material evaluation jigs, and wafer-level probe station adapters. All configurations meet mandatory safety and metrological requirements for laboratory-grade environmental simulation: IEC 61000-4-2 (ESD immunity), IEC 61000-4-3 (radiated RF immunity), and EN 61326-1 (EMC for measurement equipment). Calibration documentation supports ISO/IEC 17025 traceability through NIST-traceable reference sensors. The system is routinely deployed in GLP-compliant labs conducting UN 38.3 Section 38.3.4 (thermal test), UL 1642 Clause 9 (abuse testing), and JEDEC JESD22-A104 (temperature cycling) protocols.

Software & Data Management

Control and data acquisition are managed via Jianhu’s proprietary WinTest Pro v4.2 software platform, compliant with FDA 21 CFR Part 11 for electronic records and signatures. The interface provides full audit trail logging—including user login/logout timestamps, parameter change history, alarm event capture, and calibration certificate uploads—with encrypted local database storage and optional cloud backup (AWS S3 or on-premise NAS). Real-time graphing supports overlay of up to eight channels (chamber temp, specimen surface temp, voltage, current, O₂%, pressure, humidity, ramp rate), with export to CSV, PDF, or XML for integration into LIMS or MES systems. Remote access is enabled via TLS 1.2-secured web portal with role-based permissions (operator, engineer, QA reviewer). Software updates follow a validated release process documented per ISO 13485 Annex C.

Applications

• Lithium-ion battery safety validation: overcharge/overdischarge thermal runaway propagation studies, nail penetration tests under thermal stress, post-crush thermal monitoring
• Power electronics qualification: thermal cycling endurance of DC-DC converters, inverter gate drivers, and motor controllers under combined temperature/humidity load
• Semiconductor reliability screening: moisture sensitivity level (MSL) testing per J-STD-020, high-temperature operating life (HTOL) at elevated humidity, bias-HAST simulation
• Material compatibility assessment: thermal aging of encapsulants, conformal coatings, and PCB laminates under alternating condensing/non-condensing humidity regimes
• Regulatory pre-compliance testing for CE marking (EN 62133-2), UL certification (UL 2580), and China CCC (GB/T 31485) battery safety standards

FAQ

Does the DVX-EB Series comply with ATEX Directive 2014/34/EU for use in Zone 1 hazardous areas?
Yes—the chamber’s electrical architecture, enclosure integrity, and ventilation design are certified by TÜV Rheinland to ATEX Category 2G (Gas) and IECEx Ex db IIB T4 Gb per EN 60079-0 and EN 60079-1.
Can the system be integrated with external battery cyclers or source-measure units (SMUs)?
Yes—via IEEE-488 (GPIB), RS-485 Modbus RTU, or Ethernet TCP/IP interfaces; hardware-triggered start/stop synchronization and real-time analog feedback (0–10 V) are supported.
Is humidity control included as standard or optional?
Humidity capability is optional; standard DVX-EB models are dry-thermal only. Humidity-equipped variants include steam generator, desiccant wheel dehumidifier, and capacitive RH sensors calibrated per ISO 17025.
What documentation is provided for regulatory audits?
Each unit ships with Factory Acceptance Test (FAT) report, IQ/OQ protocol templates, calibration certificates (NIST-traceable), risk assessment (ISO 14971), and full compliance matrix mapping to IEC 60068, UL 1642, and GB/T 2423 series standards.
Are custom chamber dimensions available?
Yes—Jianhu offers bespoke internal volumes (from 150 L to 2000 L) with structural reinforcement, additional feedthroughs, and specialized mounting solutions; lead time and validation requirements apply.