Environmental adaptability is one of the key factors determining the success or failure of electronic and electrical products throughout their entire lifecycle. From smartphones to new energy vehicles, from5GFrom base stations to industrial sensors, any electronic device must withstand extreme temperatures.Programmable high and low temperature testing machineAs a simulation of complex temperature and humidity environments“Environmental Simulation Laboratory”By accurately controlling temperature and humidity parameters, helping enterprises detect product defects in advance, it has become a key focus of research and quality control in the electronic and electrical industry“core equipment”.

1、 Electronic and electrical products“Temperature sensitivity disorder”Why is it necessary to conduct high and low temperature tests?

The sensitivity of electronic components to temperature far exceeds daily perception. Temperature fluctuations may cause material deformation, solder joint detachment, battery performance degradation, and even circuit short circuits. According to industry statistics, approximately30%The malfunction of electronic devices is caused by abnormal environmental temperature, and high and low temperature tests can effectively expose the following issues:

Material compatibility: The difference in expansion coefficient of different materials (such as plastic, metal, silicone) at extreme temperatures may cause structural cracking or sealing failure.

Electrical performance: Low temperature causes a decrease in capacitor capacity and an increase in battery internal resistance; High temperature accelerates the increase of leakage current in semiconductor devices and the aging of insulation materials.

Mechanical stability: The combination of temperature changes and vibrations may cause connector loosenessPCBPlate deformation or fan bearing jamming.

Life prediction: Calculate the service life of the product at room temperature through high-temperature and high humidity accelerated aging tests.

Typical case:

A certain brand of smartphone is available-20℃During low-temperature testing, the screen touch layer peeled off from the glass substrate, resulting in touch failure.

A new energy vehicle battery pack is available55℃After the high-temperature cycling test,BMSCommunication interruption in the battery management system poses a safety hazard.

The early detection of such issues has avoided huge recall losses after the product is launched, highlighting the importance of high and low temperature testing“Risk interception”Value.

2、 Technological breakthrough of programmable high and low temperature testing machine: precise, flexible, and green

Compared with traditional incubators, programmable testing machines achieve multi-stage temperature and humidity alternation, slope control, and data recording through program control technology, which is closer to real usage scenarios. Dongguan Qingsheng Testing Equipment Co., LtdKSUNTaking the series as an example, its technical parameters directly match the needs of the electronic and electrical industry:

Temperature range:-70℃～150℃(Optional), covering extreme environments from low temperatures in the Arctic to high temperatures in the desert.

Humidity range:20%～98% RHSimulate humidity conditions along humid coasts or dry plateaus.

Temperature fluctuation:≤±0.5℃Ensure thatMEMSTesting accuracy of precision components such as sensors.

Refrigeration system: using cascade refrigeration+Taikang, France/German Bitzer compressor, guarantee-70℃Stability of ultra-low temperature testing.

Green refrigerant:R23/R404AEnvironmentally friendly refrigerant, compliant with the European UnionRoHSInstruction, disable date extended to2030Years later.

Technical highlights:

Fully enclosed compressor: noise from French Taikang compressor≤65dBSuitable for a quiet laboratory environment.

Data traceability:RS485Connect the interface to the computer, automatically generate temperature curve reports, and meet the requirementsISO 17025Laboratory certification requirements.

Intelligent control:OYO9256PColor touch screen support100Duan program programming, capable of simulating“room temperature→high temperature→low temperature”Complex cycle.

3、 Consumer Electronics and Automotive Electronics: Two Core Scenarios for High and Low Temperature Testing

Consumer Electronics: From“available”to“durable”The qualitative change

Test objects: smartphones, tablets, wearable devices.

Typical experiment:

High temperature and high humidity storage（60℃/90% RH，48Hour): Verify whether the coating on the shell is foaming and whether the buttons are stuck.

Low temperature operation test（-30℃）Detect screen response speed and camera focus stability.

Temperature shock（-40℃to85℃Quick switching: Simulate the temperature difference stress of aircraft cabin or polar scientific research equipment.

Case: A smartwatch manufacturer discovered through high and low temperature tests that,-20℃downOLEDScreen brightness attenuation30%After the subsequent improvement of the driving circuit, the low-temperature display performance has been enhanced50%.

Automotive Electronics: Safety First“three highs”verify

Test object: Vehicle mountedECUBattery Management System（BMS）TheADASSensors.

Typical experiment:

High temperature aging（85℃/85% RH，1000Hour: Accelerate insulation material aging, predict10Annual service life.

Low temperature start-up（-40℃）Ensure the engine control unit（ECU）Reliable ignition in cold regions.

temperature and humidity cycling+Vibration: Simulate the impact of sudden temperature changes during vehicle operation on connectors.

Case: A New Energy VehicleBMSFrequent errors were reported during high-temperature testing, and upon tracing, it was found that the temperature sensor harness connector had oxidized. After replacing the gold-plated connector, the fault rate returned to zero.

Conclusion

In the electronic and electrical industry“Quality is king”Under the competitive landscape, programmable high and low temperature testing machines have evolved from“Optional Equipment”upgrade to“Essential infrastructure”It can not only expose design flaws, but also help companies shorten their research and development cycles and reduce after-sales costs through data-driven optimization. With the Internet of Things andAIWith the development of technology, future testing machines will achieve remote monitoring, intelligent diagnosis, and predictive maintenance, providing stronger environmental adaptability guarantees for the global competition of electronic and electrical products.