PyroBubbles New Packing Concept for Lithium-ion Batteries

摘要

Lithium-ion batteries are gaining ground. The range of possible applications is virtually endless and the future of a modern information society without them seems inconceivable. Lithium batteries are generally considered safe. The development dynamics have increased the complexity and severely changed the number of different types as well as the chemical specifications. It is common knowledge that lithium batteries potentially exhibit "high inertia". This means that several days could pass between the actual damaging event and a possible thermal runaway. Energy density, self-ignition potential, overload (severe temperature increase due to exothermal events), total discharge or the loss of electrolyte: The hidden risks may not be underestimated. Risks are particularly due to faulty usage, improper handling or errors during production. Chemical reactions of the electrolyte may also cause extremely caustic hydrofluoric acid (HF) as well as highly inflammable and partially poisonous organic connections. As the chemical reactions of the lithium cells are exothermic, it is possible that the reaction of one cell "infects" the neighbouring cells. Alexander Lehmann, Chairman at Fire-Shield I AG also describes this infectious effect of a lithium cell as a "domino effect", because it is possible that the neighbouring cells are "infected", causing the entire module and/or the entire battery to burn down; this event is called thermal runaway.