from chemistry to pack
Base vs side cooling of cylindrical cells is often brought up in online discussions and in many OEMs designing battery packs. We looked at this before within Thermal Conduction in a Cell, however, I think it is worth expanding this topic. The Tesla design cools the side of the cell and the Lucid Motors cools … Read more
The TIM application pattern is really important as you want complete coverage between the battery cells and the cooling system. What is TIM? This is Thermal Interface Material and is designed to bridge the gap between surfaces and hence enable a better heat transfer. No surface is perfectly flat and hence the TIM is a … Read more
Whatever way we cool a battery cell we will create temperature gradients in the cell. It is not possible to apply cooling to all of the active area of the electrodes, this would be nice, but would significantly reduce the energy density of the overall battery pack. So we have to apply cooling to the … Read more
Before looking at how to thermally manage a battery pack we need to look at the thermal conductivity of the active layers. If we look at the active layers of a cell the thermal conductivity in the plane of the layers is approximately 10x to 100x that through the planes. This should not be unexpected … Read more