I am designing a PCB board that will combine 6 cells in series. However, I am thinking this might not work because of the amount of current that is required from those cells. My battery has to be able to provide up to 100A for few seconds, and 50A for continuous.
The yellow plane (5mm in width) is what will be connecting each cell in series, however with most calculators it is asking for at least 55 mm with a 20C temp rise. I can't go higher on the temp rise because this will be a battery board and don't want my battery to heat up. I also can't make the board any bigger because of my mechanical requirements. However, I can go thicker with more layers, but I have no idea how to calculate how many layers I will need to make this connection work.