Shulou(Shulou.com)11/24 Report--

CTOnews.com, June 15, two professors from Purdue University in the United States recently developed a continuously adjustable thermal regulator, which will enhance the safety and performance of batteries in a series of electronic devices and systems of vehicles (battery thermal management, space regulation, vehicle thermal comfort and thermal energy storage, etc.).

▲ source Pexels specifically, Ruan Xiulin, a professor at the school of mechanical engineering at the university, and Amy Marconnet, an associate professor, invented a solid-state continuously adjustable heat device based on compressible graphene foam coincidence material, which can achieve heat dissipation, heat insulation and function in a "wide temperature range".

"at present, the function of batteries and electronic devices is becoming more and more powerful, and heat management has become a key issue," said Ruan Xiulin. just as humans wear coats in winter and shirts in summer, they need to be comfortable within a certain temperature range. batteries and electronic devices are in the same way, and they are even more picky about the temperature range than humans. "

"if the battery is too hot, the performance will become worse," Amy Marconnet said. "when the battery heats up, there will be a chemical reaction that accelerates the heating process, an unstable process known as' thermal runaway 'and the risk of fire and explosion. If the battery temperature is too low, it is easy to cause internal damage, directly leading to shorter battery life of electric vehicles and reduced standby time of mobile phones."

In response to this situation, the thermal regulator invented by Purdue University can improve the thermal management of the battery by changing the thickness of the material inside the regulator, which will help the battery to adapt to different climates and seasons. By using a thermal regulator to adjust the channel between the battery and the environment, you can insulate the battery in a cold environment and make it easier to dissipate heat in a warm environment.

CTOnews.com noted that the graphene foam used in the device consists of nano-sized carbon particles deposited in a specific pattern and small air voids in the middle. When it is not compressed, the foam acts as an insulator and the air storage device retains the original heat. When it is compressed, the air escapes and the heat is transferred to the whole. In addition, the heat transfer can be accurately adjusted according to the degree of compression of the foam.

It is reported that the research results of the two professors have been published in two peer-reviewed academic journals. The battery application research is published in Natural Communications, and the basic research is published in ACS Applied Materials and Interfaces.

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