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how to decide the battery pack voltage

783 Views 1 Reply 2 Participants Last post by  Sunking
i am working on a design of BEV, and have some particular design parameters to achieve.I went through the calculations but found difficulty in deciding the battery pack voltage for a range of 400 Km(NEDC) and the top speed of 280kmph.

Other requirements to be achieved:
0-100kmph=<2.8s
Nurburgring lap time<7'28"
vehicle mass<1650kgs
10s peak EM power=570kw
continuous EM power=200Kw
PT efficiency=90%
consumption=18kwh/100km
Mass(battery)<500kg
Volume<300L

I calculated the Kwh of the battery pack required to go 400km using Wh/mile requirement as 90.08kwh(installed) of which the only 72.065Kwh is usable.

How do I calculate Nominal voltage required from the requirements mentioned above?
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