The Future of the Lithium-ion Battery Assessment Standards on the Test Bench
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How can energy densities of traction batteries be further increased? Some misunderstandings and misinterpretations can be seen in the answers and various arguments. But exactly this field of tension is ideally suited to sound out the directions of future cell research and to better assess today’s battery systems and cell technologies. The three other important performance criteria such as power density, service life and safety do not even have to be taken into account, as this article by the University of Stuttgart explains.
Sensitization for the appropriate assessment variables
The measure of energy density (voltage times specific capacity) is always the main development driver for the next and future generations of batteries. At first glance, this makes a lot of sense and is understandable. However, not only gravimetric energy density (Wh/kg) should be used as a unit of measurement, but also volumetric energy density (Wh/l). This applies in any case to high-voltage batteries that...