Walk in High and Low Temperature Humidity Test Chamber

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The High and Low Temperature Humidity Test Chamber is a high-performance environmental simulation system specifically engineered for the rigorous testing of EV power batteries. With a massive $12text{m}^3$ internal capacity, this chamber allows you to evaluate the functional reliability and structural integrity of battery packs under extreme thermal and hygroscopic conditions. Whether you are conducting long-term durability cycles or matching a Battery Management System (BMS) to new cell chemistries, this equipment provides the stable, repeatable environment necessary for precision data acquisition.

Applications

High and Low Temperature Humidity Test Chamber is designed for performance and reliability testing of electric vehicle power batteries. It can be integrated with battery performance testing systems and is also suitable for research and development, matching, and other tests involving power batteries and battery management systems.

Standards

GB/T 2423.1: Environmental testing methods for electrical and electronic products - Test A: Low-temperature test method

GB/T 2423.2: Environmental testing methods for electrical and electronic products - Test B: High-temperature test method

GB/T 2423.3: Environmental testing methods for electrical and electronic products - Constant humidity and heat test method

GB/T 2423.4: Environmental Testing Methods for Electrical and Electronic Products - Alternating Humidity and Heat Test Method

GB/T 10586-2006: Technical Conditions for High and Low Temperature Test Chambers

GB/T 10592-2023: Technical Conditions for High and Low Temperature Test Chambers

IEC 62660-4 Lithium-ion batteries for electric road vehicle propulsion

GB/T 31484-2015 Cycle life requirements and test methods for power batteries used in electric vehicles

Features

1. Comprehensive Safety Protection: Equipped with explosion-proof devices, automatic fire suppression systems, and gas detection units to ensure testing safety.

2. Intelligent Operation and Energy Efficiency: Supports program control and remote monitoring, utilizes fluorine-free refrigerants and energy-saving technologies, and complies with environmental standards.

Parameters

No.	Item	Specifications
1	Inner Chamber Volume	12 m³
2	Inner Chamber Dimensions	3000mm (W) × 2000mm (D) × 2000mm (H)
3	Temperature Range	-45°C ~ +100°C (adjustable)
4	Temperature Fluctuation	≤ 0.5°C (no load, steady state)
5	Temperature Uniformity	≤ 2°C (no load, steady state)
6	Temperature Deviation	≤ ±2°C (no load, steady state)
7	Heating Rate	≥ 2°C/min (room temperature ~ 85°C, with non-linear load of 1000kg battery pack)
8	Cooling Rate	≥ 1.0°C/min (room temperature ~ -40°C, with non-linear load of 1000kg battery pack)
9	Humidity Range	20% ~ 98% RH (adjustable)
10	Humidity Deviation	- Humidity > 75% RH: ≤ ±2~3% RH- Humidity ≤ 75% RH: ≤ ±5% RH
11	Humidity Fluctuation	≤ 2% RH
12	Humidity Uniformity	- Humidity > 75% RH: ≤ ±2~3% RH- Humidity ≤ 75% RH: ≤ ±5% RH
13	Air Pressure Balance System	Equipped with an air pressure balance valve, which opens automatically under a certain pressure difference

Accessories

1.Integrated Fire Suppression: Automatic extinguishing system triggered by thermal or smoke sensors.

2.Gas Detection Sensors: Real-time monitoring for $H_2$, $CO$, and other battery vent gases.

3.Cable Access Ports: Sealed ports (typically $100text{mm}$) for connecting the battery to external cyclers or BMS testers.

4.Pressure Balance Valve: Mechanical relief valve to equalize internal and external pressure during rapid temperature changes.

5.Multi-Pane Observation Window: Heated glass to prevent frost and condensation during low-temperature or high-humidity runs.

Test Procedures

1. Pre-Operation Preparation

Ensure power cords and grounding wires are securely connected.

Open the chamber door, remove any debris inside, and verify proper sealing.

Check refrigerant levels and ensure the water inlet contains adequate clean water (manual water addition required for some models).

2. Parameter Settings

Set high temperature (e.g., 80°C), low temperature (e.g., -40°C), and humidity (e.g., 95% RH) via the control panel.

Configure preheating duration, constant temperature duration, and cycle count (e.g., 5 cycles).

‌3. Sample Placement‌

Place the power battery inside the chamber, close the door, and wait for preheating to complete.

If testing ports are required, connect cables and secure them.

‌4. Initiate Testing‌

Press the power button to start operation according to the set parameters.

Monitor sample conditions closely during testing and record temperature, humidity, and other data.

‌5. End of Operation‌

After testing concludes, turn off the power and clean any accumulated water or debris from the chamber.

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