Packaging

Measuring the thermal diffusivity and thermal conductivity along with the specific heat capacity form the basis for comprehensive understanding. But in Packaging process, LFA and DSC is not proper to investigate these thermophysical properties due to the sample size. Battery Pack sample is too big to be measured by LFA and DSC. But HFM can measure Battery Pack sample. HFM 446 Lambda Eco-Line, makes sure that the highest level of energy efficiency is at work when measuring thermal conductivity and even specific heat capacity.

Each time a material is exposed to temperature changes – it shows a variation in its dimension. Whether it is in the course of its regular thermal expansion or by passing a phase transition, the substance will either be shrunk or elongated. For example, polymer separators can shrink significantly at elevated temperatures which affects the battery performance and safety. To predict the deformation and stresses in the separator in battery cells, it is necessary to measure the expansion/shrinkage behavior. This is achieved by Thermomechanical Analysis (TMA) and Dilatometer (DIL), expressed by the coefficient of thermal expansion (CTE).