Jianhu JH-Series Battery Environmental Test Chamber with Explosion-Proof Design

Overview

The Jianhu JH-Series Battery Environmental Test Chamber is an engineered solution for rigorous thermal validation of lithium-ion, solid-state, and next-generation electrochemical energy storage systems under extreme ambient conditions. Designed specifically for battery R&D, quality assurance, and safety certification workflows, this chamber employs a dual-stage cascade refrigeration architecture coupled with explosion-proof mechanical and electrical integration to enable stable, repeatable operation across an industry-leading temperature span of −70 °C to +180 °C. Its operational principle relies on precise thermodynamic control via PID-regulated heating elements and multi-stage compressors using environmentally compliant refrigerants (R23/R404A), ensuring minimal thermal inertia and high reproducibility in both static and dynamic thermal profiling. The chamber meets the fundamental requirements of UN 38.3, IEC 62133, GB/T 31485, and ISO 12405 for battery abuse testing—including low-temperature discharge, high-temperature storage, thermal runaway propagation, and combined environmental-vibration stress screening.

Key Features

• Explosion-proof enclosure constructed from 304 stainless steel with certified flame-retardant coating and integrated pressure-relief venting system compliant with ATEX Directive 2014/34/EU and IECEx Scheme (Ex d IIB T4)
• Cascade refrigeration system enabling deep-cold capability down to −70 °C without liquid nitrogen dependency; dual independent compressors improve cooling efficiency by up to 40% versus single-stage designs
• Surface-limited heating modules with dynamic power modulation to maintain heater surface temperature below 120 °C—critical for preventing inadvertent thermal initiation during cell-level testing
• Real-time multi-parameter monitoring interface (7-inch HMI touchscreen + PLC controller) supporting concurrent logging of chamber temperature, internal pressure, battery voltage, current, and surface thermocouple readings
• Triple-layer safety interlock architecture: door-mounted magnetic switch, internal pressure sensor, and over-temperature cutoff relay—all triggering immediate power isolation and optional suppression agent release
• Configurable ramp-and-soak profiles (up to 100 programmable steps), with data export via USB 2.0 and RS485 Modbus RTU for integration into LIMS or MES platforms

Sample Compatibility & Compliance

The JH-Series accommodates cylindrical (18650, 21700, 4680), prismatic, pouch, and custom-format battery cells and modules—up to 300 mm × 300 mm × 200 mm in standard configurations. Optional internal fixtures support simultaneous monitoring of up to four independent DUTs with dedicated voltage/current sensing channels. All models are designed and verified per IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-14 (change of temperature), and UL 1642 Annex B (thermal abuse). Full traceability documentation—including factory calibration certificates (NIST-traceable Pt100 sensors), explosion-proof component test reports, and CE Declaration of Conformity—is supplied with each unit. The system supports audit-ready data integrity protocols aligned with FDA 21 CFR Part 11 (electronic signatures, audit trail, user access controls) when paired with optional validated software packages.

Software & Data Management

Embedded firmware provides local control and real-time visualization of all monitored parameters, including trend graphs, alarm history, and cycle completion status. For enterprise-scale deployment, optional PC-based software (Jianhu TestSuite v3.2) enables remote chamber supervision, automated report generation (PDF/CSV), statistical process control (SPC) charting, and integration with LabVIEW, MATLAB, or Python-based analysis pipelines via TCP/IP API. All logged data includes timestamped metadata (operator ID, test ID, chamber serial number, sensor calibration expiry), satisfying GLP/GMP documentation requirements. Data encryption at rest (AES-256) and TLS 1.2–secured transmission ensure compliance with ISO/IEC 27001 information security standards.

Applications

• Electric vehicle (EV) battery pack qualification: cold-cranking performance at −40 °C, high-temperature calendar aging at 85 °C, and thermal shock cycling per SAE J2464
• Energy storage system (ESS) validation: capacity retention testing across −20 °C to +60 °C, accelerated life modeling, and thermal runaway propagation studies using calibrated calorimetric triggers
• Aerospace battery certification: stratospheric cold soak (−55 °C) and re-entry thermal simulation (+150 °C), often combined with MIL-STD-810H vibration profiles
• Material science research: electrolyte freezing point determination, SEI layer stability assessment, and binder thermal degradation kinetics under controlled humidity-free conditions
• Manufacturing QA/QC: incoming cell screening, batch homogeneity verification, and end-of-line functional burn-in testing

FAQ

What explosion-proof certifications does the JH-Series hold?
The chamber carries full ATEX Category 2G (gas) and IECEx Ex d IIB T4 certification, covering Group II B explosive atmospheres with maximum surface temperature class T4 (≤135 °C). Certificate numbers and test reports are provided upon request.
Can the chamber operate continuously at +180 °C?
Yes—rated for indefinite dwell at +180 °C with no derating, thanks to high-temperature insulation (ceramic fiber + vacuum panel hybrid), Class H insulation motors, and redundant over-temperature protection circuits.
Is remote monitoring supported out of the box?
Standard configuration includes RS485 Modbus RTU for SCADA integration; optional Ethernet/WiFi module enables cloud-based telemetry and mobile alerts via MQTT or HTTP RESTful API.
How is temperature uniformity validated?
Each unit undergoes 9-point uniformity mapping per IEC 60068-3-5 using NIST-traceable Class A PT100 probes; final report documents deviation across volume at −70 °C, +25 °C, and +180 °C.
Does Jianhu provide IQ/OQ/PQ documentation support?
Yes—validated installation, operational, and performance qualification templates are included, along with on-site commissioning services and third-party certification assistance through accredited partners in EU, US, and APAC regions.