Ermittlung und Auslegung eines Konzeptes für ein energieeffizientes Thermomanagement einer Lithium-Ionen-Batterie unter Einsatz intelligenter Werkstoffe

The thermal management of lithium ion batteries is a central element for operation safety and high lifetime. A combined integration of mentioned thermal management and measures for crash safety into one battery package is desirable. The use of a latent heat accumulator should level temperature spikes and allow for high uniformity of temperature while reducing the energy demand of an active cooling system. The phase-change material is embedded in a matrix of closed-cell metal foam with microcracks to allow for a safe and well-directed application as well as sufficient heat transport. Based on measured data and literature a simulation model is created which makes a study of various arrangements of phase-change material possible. Then a preferential layout for a battery package is developed based on the obtained knowledge from these szenarios. It fullfills the thermal requirements regarding peak temperature and uniformity for the given load case. The preferential layout is used as a basis for the construction of a functional model