Jianhu JH-Series Explosion-Proof Battery Charge/Discharge Test Chamber with High-Precision Sensing and Integrated Environmental Conditioning

Overview

The Jianhu JH-Series Explosion-Proof Battery Charge/Discharge Test Chamber is an integrated environmental test system engineered for rigorous safety-critical evaluation of lithium-ion and next-generation electrochemical cells under controlled thermal and electrical stress conditions. Designed in accordance with IEC 62133, UN 38.3, and GB/T 31241 standards, the chamber combines precision temperature conditioning (−70 °C to +150 °C) with real-time electrical parameter monitoring—voltage, current, surface temperature, and internal cell resistance—within a certified explosion-resistant enclosure. Its core architecture employs dual-loop PID control with platinum RTD sensors (Class A, ±0.1 °C accuracy) and high-bandwidth shunt-based current sensing (±0.2% full-scale), enabling synchronized thermal-electrical profiling essential for abuse tolerance validation, cycle life assessment, and thermal runaway propagation studies.

Key Features

• Explosion-proof chamber construction compliant with IEC 60079-1 (flameproof enclosure ‘d’) and ISO 8501-1 surface preparation standards for hazardous area operation.
• Multi-stage compressor refrigeration system with cascade staging for stable sub-zero operation down to −70 °C, supported by insulated double-wall stainless steel chamber (SUS304 interior, 2.0 mm thickness).
• High-precision sensing suite: 4-wire Kelvin voltage measurement, 100 kHz bandwidth current transducers, and 16-channel thermocouple/RTD inputs with cold-junction compensation.
• Programmable thermal ramp profiles with rate control from 0.1 °C/min to 10 °C/min; independent verification via external NIST-traceable reference probe.
• Integrated safety interlocks: over-temperature cutoff (dual redundant sensors), pressure relief venting (rated to 2 bar), emergency power-off (EPO) with mechanical latch, and automatic purge sequence prior to door opening.
• Modular I/O architecture supporting CAN bus, RS485, and Ethernet interfaces for seamless integration with battery cyclers (e.g., Arbin, Bitrode, Neware) and SCADA systems.

Sample Compatibility & Compliance

The JH-Series accommodates cylindrical (18650, 21700, 32650), prismatic, and pouch-format cells up to 500 mm × 400 mm × 150 mm (customizable interior). It supports both passive thermal monitoring and active charge/discharge synchronization via TTL-triggered start/stop signals. Regulatory alignment includes compliance with ISO/IEC 17025 laboratory accreditation requirements for test method validation, as well as design conformance to UL 1642 Annex B (cell-level short-circuit testing), IEEE 1625/1679 (battery reliability protocols), and EU Machinery Directive 2006/42/EC. Optional third-party certification packages are available for ATEX Zone 1/21 and IECEx Ex d IIC T4 Gb/Da classification.

Software & Data Management

Equipped with Jianhu’s proprietary TestMaster™ v4.2 software, the system delivers time-synchronized acquisition at up to 100 Hz sampling across all analog channels. Data export conforms to ASTM E1447-22 (electrochemical test data format) and supports CSV, HDF5, and MATLAB .mat formats. Audit trail functionality meets FDA 21 CFR Part 11 requirements—including electronic signatures, user role-based access control (RBAC), and immutable event logging—with optional integration into LIMS platforms via RESTful API. Calibration records are digitally embedded and auto-verified during startup using checksummed sensor ID tags.

Applications

• Thermal runaway initiation and propagation analysis under controlled heating, overcharge, or external short-circuit conditions.
• Accelerated aging studies across temperature gradients to model Arrhenius-based degradation kinetics (SEI growth, electrolyte decomposition).
• Validation of battery management system (BMS) thermal response algorithms under dynamic load profiles.
• Pre-compliance screening for UN 38.3 Section 5.2 (thermal cycling), Section 5.3 (vibration), and Section 5.4 (mechanical shock) test sequences.
• Material-level evaluation of thermal interface materials (TIMs), flame-retardant separators, and solid-state electrolyte stability.
• Support for DOE-funded projects requiring traceable metrology per NIST SP 800-53 Rev. 5 (security controls for scientific instrumentation).

FAQ

What explosion-proof certifications does the JH-Series hold?
The standard configuration meets IEC 60079-1 (flameproof ‘d’ enclosure) and ISO 8501-1 surface cleanliness requirements. ATEX and IECEx certification kits—including certified cable glands, intrinsically safe signal conditioners, and zone-specific grounding hardware—are available as optional add-ons.
Can the chamber interface directly with commercial battery cyclers?
Yes—via isolated digital I/O (TTL/RS485) and analog voltage/current output channels. Preconfigured drivers for Arbin BT-Lab, Neware BTS, and Bitrode systems are included in TestMaster™ software.
Is temperature uniformity validated per IEC 60068-3-5?
Yes—each unit undergoes 9-point uniformity mapping per IEC 60068-3-5 Annex A, with results documented in the factory calibration report shipped with the system.
What is the maximum allowable sample mass for thermal runaway testing?
The standard chamber supports up to 15 kg net sample mass. For higher-mass configurations (>25 kg), reinforced structural framing and extended vent ducting must be specified at order stage.
Does the system support remote monitoring and alarm notification?
TestMaster™ includes SMTP-based email alerts and SNMP trap generation for critical events (e.g., temperature excursion >±3 °C, pressure rise >1.2 bar, sensor fault). Optional LTE modem integration enables cellular-based telemetry in off-grid lab environments.