Modification and Application of Organic Phase Change Materials for Thermal Peak Management
Authors: Mathias Nowottnick, Jacob Maxa, Andrej Novikov Company: University of Rostock Date Published: 9/22/2019
Abstract: The use of so-called phase change materials (PCM) as energy storage is very popular, especially for building climate control, but also in combination with regenerative energy generation, e.g. with solar cells. Recently, however, the use of PCM for electronics has also been the subject of targeted research. Especially in power electronics, such materials can effectively limit the peak temperatures of certain components. For use in electronics, the melting temperature must be set very precisely to the operating temperature of the module and the permissible peak temperature of the components. Organic PCMs from the group of sugar alcohols are therefore particularly suitable for this application because they are available in numerous variants with different melting points and can be alloyed with each other. For a permanent and reproducible use of PCM to limit peak temperatures, however, further properties are of importance: the volume change during melting, the thermal conductivity, the thermal stability and above all the recrystallization rate. In a joint research project, these properties were systematically investigated and adapted for industrial demonstrators.
thermal management, power electronics, packaging technology, materials