Jianhu JH-Series EV Charging Station Environmental Test Chamber with Explosion-Proof Design

Overview

The Jianhu JH-Series EV Charging Station Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of electric vehicle (EV) charging infrastructure under rigorously controlled temperature and humidity conditions. Designed specifically for compliance-driven validation of AC/DC charging stations, wallboxes, and associated power electronics, this chamber operates on a dual-loop PID-controlled air-circulation system with high-stability platinum resistance temperature sensors (PT100) and capacitive humidity transducers. Its core function is to replicate real-world climatic exposure—such as tropical high-humidity environments, arid desert heatwaves, or temperate seasonal transitions—to assess thermal management efficacy, insulation integrity, condensation resistance, and long-term reliability of charge controllers, contactors, cooling fans, and communication modules. Unlike general-purpose climate chambers, the JH-Series integrates certified explosion-proof architecture per IEC 60079-0 and GB 3836.1–2010 standards, enabling safe operation during fault-condition simulations where arc flash, internal overpressure, or thermal runaway events may occur.

Key Features

• Explosion-proof certified enclosure constructed from reinforced stainless steel (SUS304) with flameproof joints, pressure-relief vents, and intrinsically safe electrical feedthroughs.
• Dual-stage heating/cooling system with independent refrigerant circuits and PID-regulated resistive heaters for stable ramp-and-soak profiles across the full operating range.
• High-accuracy humidity generation via steam injection with deionized water reservoir and anti-scale ultrasonic humidifier; integrated desiccant-based dehumidification ensures rapid RH recovery.
• Real-time monitoring of chamber internal pressure, surface temperature of DUT mounting plates, and dew point deviation—data logged at user-configurable intervals (1–60 s).
• Compliance-ready safety interlocks: over-temperature cutoff (±0.5 °C hysteresis), over-pressure shutdown (< 1.2 bar gauge), door-open emergency venting, and automatic power isolation upon sensor fault detection.
• Modular interior layout with removable load racks, cable ports rated IP65, and optional EMI-shielded viewing window for in-situ diagnostics.

Sample Compatibility & Compliance

The chamber accommodates single- or multi-unit EV charging systems up to 120 kW output capacity, including liquid-cooled DC fast chargers (CCS/GB/T/CHAdeMO), AC Level 2 units, and smart grid-integrated controllers. Mounting interfaces support DIN-rail, wall-mount, and floor-stand configurations. All materials in direct contact with test specimens comply with UL 94 V-0 flame retardancy and RoHS 2011/65/EU restrictions. The system meets requirements for environmental stress screening (ESS) per MIL-STD-810H Method 501.7 (Temperature), Method 502.7 (Humidity), and Method 511.7 (Explosive Atmospheres). It supports audit-ready traceability for ISO/IEC 17025-accredited laboratories and aligns with functional safety expectations outlined in ISO 6469-3:2022 (Electrically propelled road vehicles — Safety specifications — Part 3: Electrical safety).

Software & Data Management

Control and data acquisition are managed through Jianhu’s proprietary ChamberLink™ v4.2 software suite, compliant with FDA 21 CFR Part 11 for electronic records and signatures. The interface provides role-based access control (administrator/operator/auditor), configurable test sequences with conditional branching (e.g., “if chamber RH > 95% for >10 min, initiate purge cycle”), and real-time trending of up to 32 analog/digital channels. Raw data exports in CSV, XML, and PDF formats include metadata stamps for instrument calibration status, operator ID, and environmental ambient conditions. Audit trails record all parameter changes, manual overrides, and alarm acknowledgments with immutable timestamps. Optional integration with LabArchives ELN and Siemens MindSphere enables end-to-end digital twin synchronization for predictive maintenance modeling.

Applications

• Pre-certification validation of charging equipment against IEC 62752 (AC charging systems), IEC 61851-23 (DC charging), and UL 2594 (EVSE safety standard).
• Accelerated life testing of power semiconductors (SiC MOSFETs, IGBT modules), PCB conformal coatings, and gasket materials under combined thermal-hygric cycling.
• Failure mode analysis of communication protocols (OCPP 1.6/2.0.1) under condensation-induced signal attenuation or connector corrosion.
• Verification of thermal derating algorithms during sustained 100% load operation at elevated ambient temperatures (e.g., 40 °C / 90% RH).
• Support for automotive OEM PPAP submissions requiring environmental robustness evidence per AIAG CQI-17 guidelines.

FAQ

Does this chamber support automated test sequencing for IEC 61000-4-21 radiated immunity pre-compliance testing?
No—radiated immunity testing requires RF-shielded enclosures and calibrated antennas. The JH-Series is optimized for climatic stress only; however, its modular design allows co-location with RF chambers in integrated test cells.
Can the chamber maintain 45 °C and 98% RH simultaneously for extended durations?
Yes—continuous operation at maximum setpoints is supported for ≥1,000 hours, subject to preventive maintenance of humidification nozzles and condensate drainage lines.
Is third-party calibration documentation included with shipment?
Each unit ships with NIST-traceable calibration certificates for temperature (±0.3 °C) and humidity (±2% RH) sensors, valid for 12 months from date of manufacture.
What is the minimum required clearance around the chamber for ventilation and service access?
A minimum of 600 mm clearance on rear and side panels is mandatory for airflow and compressor servicing; top clearance must exceed 1,200 mm if optional roof-mounted exhaust ducting is installed.
Are custom I/O interfaces available for integration into existing factory MES systems?
Yes—Modbus TCP, OPC UA, and RESTful API endpoints are standard; CAN bus gateways and Profibus-DP adapters are available as factory-installed options.