SageBrush wrote:This has nothing to do with being solid or not, it has to do with surface area for passive heat dissipation.
Ah, BINGO. As the pack is not a solid object, or of a uniform density for that matter - the spaces inside the pack, the density of the individual cells, and any number of other factors are also relevant to how the pack passively dissipates heat.
Or how "the pack" passively absorbs heat (chassis/ambient), i.e. its effective thermal resistance to the
chassis and ambient - both paths are in parallel. Like parallel resistors, one path may dominate,
i.e. the much lower thermal resistance.
Leaf SL MY 9/13: 66K miles, 50 Ahrs, 5.2 miles/kWh (average), Hx=70, SOH=78, L2 charges to 100% > 1000, max battery temp < 95F, min discharge point > 20 Ahrs