Jianhu Ice-Water Thermal Shock Test Chamber – OK-BSCJ Series

Overview

The Jianhu OK-BSCJ Series Ice-Water Thermal Shock Test Chamber is an engineered solution for evaluating the structural integrity, sealing performance, and thermal shock resistance of enclosures and assemblies under rapid, controlled transitions between high-temperature water and sub-zero ice-water environments. Unlike conventional thermal cycling chambers, this system operates on a dual-bath immersion and high-pressure spray principle—directly simulating real-world scenarios such as hot automotive components encountering sudden cold-water splash during winter driving or battery packs subjected to flood-level immersion after thermal soak. The chamber implements a dual independent temperature control architecture: one stainless-steel water bath maintained at up to +80 °C (adjustable), and a second ice-water bath stabilized at 0 °C ±0.3 °C with precise ice concentration management. Temperature transition between baths is executed via programmable robotic sample transfer, achieving ≤3-second mechanical switching time and ±0.1-second timing resolution—critical for replicating transient thermal stress profiles defined in ISO 20653, GB/T 2423.34, and IEC 60529 IPX9K test protocols.

Key Features

• 316L stainless-steel inner chamber and dual-bath tanks—resistant to corrosion from saltwater, deicing agents, and repeated thermal cycling
• Independent high-precision PID-controlled heating and refrigeration systems for each bath, enabling ≥80 °C differential (e.g., +80 °C / 0 °C)
• Adjustable immersion depth (0–500 mm) with calibrated level sensors and overflow protection
• High-pressure ice-water spray module: 0–100 bar pressure range, 0–14 L/min flow control, compliant with ISO 20653 Annex D
• Integrated explosion-proof enclosure, gas detection system (O₂/CO₂), and automatic fire suppression (Novec 1230)
• Sample load capacity up to 2,000 kg—engineered for full EV battery pack testing
• Compliance-ready data logging: timestamped temperature, pressure, flow, position, and door status with audit trail

Sample Compatibility & Compliance

The OK-BSCJ series accommodates samples ranging from compact ECU housings (≤300 mm × 300 mm × 200 mm) to full-scale electric vehicle battery modules (up to 1,800 mm × 1,200 mm × 200 mm). Its modular fixture interface supports custom mounting brackets, cable feedthroughs, and real-time signal monitoring ports. The system meets essential regulatory and industry requirements including CE (2014/30/EU EMC Directive, 2014/35/EU LVD), UL 61010-1, and RoHS 3. It is validated for use in GLP-compliant laboratories and supports FDA 21 CFR Part 11 electronic signature readiness when paired with Jianhu’s optional IQ/OQ documentation package. Test methods implemented align with ISO 20653:2013 (road vehicles—protection against ingress of water), GB/T 2423.34–2012 (environmental testing—part 2: tests—test Z/AD: climatic sequence), and SAE J2344 (thermal shock evaluation of EV battery enclosures).

Software & Data Management

The chamber is operated via Jianhu’s proprietary TMS-3000 control software, running on an embedded industrial PC with a 10.1″ capacitive touchscreen HMI. The software provides ISO/IEC 17025-aligned test sequencing—including multi-step ramp-soak-spray-immersion cycles—and supports user-defined pass/fail logic based on real-time sensor thresholds. All operational parameters (temperature setpoints, pressure curves, dwell times, transfer actuation) are stored with SHA-256 hashing and immutable timestamps. Data export is available in CSV, PDF test reports (with digital signature fields), and XML formats compatible with LIMS integration. Optional cloud connectivity enables remote monitoring, predictive maintenance alerts, and secure role-based access control—fully auditable for GMP and AS9100 quality system reviews.

Applications

This test chamber serves mission-critical reliability validation across multiple high-regulation sectors:

• Electric Vehicle Battery Systems: IP67/IP68 sealing verification, thermal shock-induced crack propagation analysis, and post-impact waterproof integrity assessment per UN GTR 20
• Automotive Electronics: ECU, ADAS sensors, headlamp assemblies, and power electronics subjected to simulated road-splash thermal shock per ISO 16750-4
• Aerospace Components: Avionics enclosures, hydraulic actuators, and landing gear seals tested under rapid thermal gradients mimicking altitude-induced condensation and rain ingestion
• Industrial Power Electronics: Inverters, DC-DC converters, and charging infrastructure housings evaluated for long-term hermeticity under cyclic thermal-mechanical stress
• Medical Device Enclosures: Portable diagnostic equipment and implantable device housings validated per IEC 60601-1 Clause 11 (mechanical strength and ingress protection)

FAQ

Does the OK-BSCJ series support both immersion and spray testing within a single test sequence?

Yes. The system integrates independent immersion tanks and a high-pressure spray nozzle array, allowing fully programmable hybrid sequences—for example: pre-heat → ice-water immersion → robotic transfer → high-pressure spray → dwell → data capture.

What calibration standards does Jianhu follow for temperature and pressure sensors?

All platinum RTD sensors (Class A, IEC 60751) and piezoresistive pressure transducers (traceable to NIST via CNAS-accredited lab) undergo annual third-party calibration per ISO/IEC 17025. Calibration certificates include uncertainty budgets and as-found/as-left data.

Can the chamber be integrated into an existing factory MES or QMS platform?

Yes. The TMS-3000 software provides OPC UA server functionality and RESTful API endpoints for bidirectional communication with Siemens Opcenter, PTC ThingWorx, or custom enterprise systems.

Is non-standard customization available for battery pack fixtures or extended temperature ranges?

Yes. Jianhu maintains an in-house mechanical design team and CNC machining capability. Custom load frames, thermal shunts, and extended low-temperature (-20 °C ice-water) configurations are developed under formal Design Transfer Agreements with full DFM review and FAT/SAT documentation.

How is data integrity ensured during extended unattended operation (e.g., 72-hour soak tests)?

The embedded controller features dual SD card mirroring, watchdog-timed firmware reset, and automatic local backup to encrypted internal SSD. All sensor inputs are oversampled at 10 Hz and median-filtered to suppress transient noise without compromising response fidelity.