Experimental development of a calorimeter setup to measure heat generation of Li-lon cells during thermal runaway
Johannes Rieser
https://tugraz.webex.com/tugraz/j.php?MTID=m2790c3d2a9a49c31369978e2a76de31c
11:15 - 12:15 Wednesday 05 June 2024 In recent years, energy and environmental concerns have driven the need for electric transportation and energy storage systems. Lithium-ion batteries (LIBs) have the advantages of high specific energy, high energy density, long cycle life, low self-discharge and long shelf life, and are therefore the dominant state-of-the-art energy storage.
However, the major drawback of LIBs is the risk of thermal runaway (TR), an exothermic reaction that leads to fire, explosion and other life-threatening emissions from the battery. Preventing and understanding TR is key to future developments. In this work, the heat release of an automotive LIB is studied by a novel experimental approach using a combination of a cell calorimeter and a cyclonic particle separator. This experimental setup allows the energy released during TR of the cell body, the ejected particles and the vent gases to be measured separately. Determining the energy of the venting products from a single cell is a critical safety issue to minimize the thermal impact on the entire battery system.
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Institute of Solid State Physics
