The specific heat capacity is a measure of how much energy is necessary to raise the temperature of a system a given amount. A system with a higher specific heat capacity is said to have a higher thermal mass, meaning that with the same amount of heat, it will have a lower temperature rise.
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So, the thermal mass of the pack being 35.5kJ/deg C lines up with the testing results pretty much perfectlywell within margin of error.
With this heat capacity of the pack, we are able to calculate some of the transient effects of going up hills, etc. Our strategy lead (Clarke) says that while going up a hill, a 10kW power draw for 5 minutes would be a conservative estimate for the length of a hill.
At 10kW, we are drawing 76A at nominal voltage and producing 329.2W of heat.
1W = 1J/s
329.2J/s * 5min * 60sec/min = 98.76kJ
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