Application of High and Low Temperature Test Chambers in the Research of New Energy Materials：
1. Lithium-ion batteries: High and low temperature tests run through all R&D stages of lithium-ion batteries, from materials, cells to modules.
2. Material level: Evaluate the basic physical and chemical properties of basic materials such as positive and negative electrode materials, electrolytes, and separators at different temperatures. For instance, testing the lithium plating risk of anode materials at low temperatures, or examining the thermal shrinkage rate (MSDS) of separators at high temperatures.
3. Cell level: Simulate the cold winter in the frigid zone (such as -40℃ to -20℃), test the low-temperature start-up, discharge capacity and rate performance of the battery, and provide data support for improving low-temperature performance. Cyclic charge and discharge tests are conducted at high temperatures (such as 45℃ and 60℃) to accelerate aging and predict the long-term service life and capacity retention rate of the battery.
4. Fuel cells: Proton exchange membrane fuel cells (PEMFC) have extremely strict requirements for the management of water and heat. Cold start capability is a key technical bottleneck for the commercialization of fuel cells. The test chamber simulates an environment below freezing point (such as -30℃) to test whether the system can be successfully started after freezing and to study the mechanical damage of ice crystals to the catalytic layer and proton exchange membrane.
5. Photovoltaic materials: Solar panels need to serve outdoors for more than 25 years, enduring the harsh tests of day and night as well as the four seasons. By simulating the temperature difference between day and night (such as 200 cycles from -40℃ to 85℃), the thermal fatigue of the interconnect solder tape of the battery cells, the aging and yellowing of the encapsulation materials (EVA/POE), and the bonding reliability between different laminated materials can be tested to prevent delamination and failure.
Modern high and low temperature test chambers are no longer simple temperature change chambers, but intelligent testing platforms integrating multiple functions. The advanced test chamber is equipped with observation Windows and test holes, allowing researchers to monitor the samples in real time during temperature changes.
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