the place for Battery Engineers

[bbp-topic-index]

  • Pack Mass from Cell Density

    It is possible to use the battery pack database to estimate the pack mass from cell density. The key relationship we have is between cell and pack gravimetric energy density. This graph has been pulled together by scouring the internet for cell and battery data. The ratio of cell density to pack density is 0.6235…

  • Sodium Ion Cell Manufacturing Process

    A look at the Sodium Ion Cell Manufacturing Process, but perhaps more usefully a look at the differences compared to the lithium based cell manufacturing processes. Note: this is a work in progress as we gather information and knowledge. Hence some sections are empty because we do not know, not because there are no differences.…

  • Anti-Shunt Tab Design

    The anti-shunt tab design is there to enable a better resistance micro spot weld. The busbar for a cylindrical or prismatic cell has to be welded blind. Meaning you can only weld from the topside of the busbar as the cell itself is a sealed system. The anti-shunt tab design shown on the left welded…