This is specific heating per volume. Considering that the Tesla cell has ~80% more volumetric energy density (643.3 Wh/l vs 355.3 Wh/l), if normalize the specific heating per unit of charge (instead of volume), the BYD cell is now only around 10% better.
TLDR - the Tesla cell is 1.8 times the energy density so 2 times the heating for 1.8 times the charge added.
This is specific heating per volume. Considering that the Tesla cell has ~80% more volumetric energy density (643.3 Wh/l vs 355.3 Wh/l), if normalize the specific heating per unit of charge (instead of volume), the BYD cell is now only around 10% better.
TLDR - the Tesla cell is 1.8 times the energy density so 2 times the heating for 1.8 times the charge added.
Thanks for your remark. It’s easy to misinterpret technical papers like this one from OP.