High and low temperature explosion-proof test chamber technology analysis and application scene overview

I. Multiple explosion-proof structure design

The high and low temperature explosion-proof test chamber adopts 304 stainless steel or high-strength explosion-proof material box, the inner layer and the shell between the addition of explosion-proof interlayer, which can resist the explosion shock wave. The front door of the device is equipped with a secondary explosion-proof structure, integrated explosion-proof locks and explosion-proof chains; the back door is equipped with a pressure relief door, and the side is installed with an automatic explosion-proof pressure relief port, which opens immediately when the pressure exceeds the limit to relieve the pressure and inhibit the proliferation of explosions. Reinforced hinges and explosion-proof locks ensure the sealing of the door to avoid accidental opening during the test.

II. Explosion-proof electrical and temperature control system

Electrical safety

The circuit of the high and low temperature explosion-proof test chamber conforms to Ex d IIC T4/T6 explosion-proof standard, and is equipped with explosion-proof motor, explosion-proof heater and anti-static wind wheel to eliminate the risk of electric sparks. The fan adopts explosion-proof low-voltage asynchronous high-temperature-resistant motor with anti-static stainless steel blades to ensure safe air circulation.

Precise temperature control

The temperature range of the high and low temperature explosion-proof tester covers 

-40℃ to +120℃ (expandable to -85℃ or +180℃), and some models support humidity control (10%～98%RH). Its heating rate ≥ 3 ℃ / min (-40 ℃ +120 ℃), cooling rate ≥ 1 ℃ / min (+120 ℃ ~ -40 ℃), volatility ≤ ± 0.2 ℃, uniformity ≤ ± 2 ℃, through the PID + SSR algorithm and inverter refrigeration technology to achieve precise regulation.

III. Intelligent safety protection and double-layer design

Intelligent protection system

High and low temperature explosion-proof test chamber built-in smoke sensor linkage carbon dioxide fire extinguishing device, detecting the risk of spontaneous combustion within 0.5 seconds after the start of fire extinguishing. The gas monitoring module detects the concentration of flammable and explosive gases in real time, and triggers sound and light alarms and cuts off the power supply when abnormal.

Pressure Relief and Protection

The pressure relief port on the top of the device can instantly release high-pressure gas, pressure relief efficiency ≥ 95%; double-layer tempered glass observation window with built-in LED lighting, support for customized size. The independent double-layer structure of the high and low temperature explosion-proof test chamber integrates multiple mechanisms such as over-temperature/over-pressure alarm and leakage protection to ensure safe operation.

Core application areas

New energy and battery testing

High and low temperature explosion-proof test chamber is used for lithium battery validation, simulating the extreme environment of -70℃ to +150℃, testing the charging and discharging performance and the risk of thermal runaway, such as new energy vehicle battery packs, energy storage system durability testing. In charging pile evaluation, the equipment can simulate high/low temperature alternating environment to ensure insulation and heat dissipation performance.

Aerospace and Military

The high and low temperature explosion-proof test chamber verifies the thermal expansion and strength change of spacecraft components (-70℃~+200℃) to ensure the tolerance of extreme environment at high altitude. In military equipment testing, the equipment can simulate desert/polar climate to verify the operational stability of weapon systems and electronic equipment.

Automotive Industry

High and low temperature explosion-proof test chambers are used to evaluate the functional reliability of on-board sensors and battery management systems at -40℃~+80℃. In vehicle testing, the equipment can simulate cold (-40℃) and hot (+60℃) environments to verify the extreme climate safety of vehicles.

Electronic and electrical industry

High and low temperature explosion-proof test chamber detects the electrical performance and thermal expansion and contraction effect of chips and PCB boards under high and low temperatures. In industrial equipment verification, the equipment evaluates the insulation and starting ability of motors and relays under extreme temperatures.

High and low temperature explosion-proof test chamber meets the testing needs of military industry, new energy and other high-risk scenarios through the deep integration of explosion-proof structure, intelligent control and safety protection. Its wide temperature range coverage, rapid temperature change and accurate control capabilities for aerospace, automotive electronics and other fields to provide reliable environmental simulation solutions.