Firstly, congrats! Looks awesome, and fast.
Sutho wrote:
We are also using Kokam. Will be running peaks of 12C, a relatively high average and will be using a lot of regen.
What vehicle set-up were you running on the dyno.....and how long were you pulling 10C?
Induction motor was in the car (open wheel racer). Rear wheel chain drive through a spool.
Going back over my videos, we actually weren't pulling 10C constantly on the dyno - more like 7C. With short bursts in the dyno power run of 14C. From a cold start, monitoring throughout testing, the temperature of the batteries never increase over a few degC which I thought was promising.
This was in 2011, don't think anyone has done much more dyno testing on the vehicle(s) since. The endurance race is about 20mins - last year it was a 40deg day - the motor overheated, but again the batteries seemed to be fine. We have individual temp monitoring of each cell through the BMS - I know they have never gone out of spec and caused a fault, but i've never looked at the log file.
What BMS are you using?
I know a lot of the European teams don't run any battery cooling, but I guess over there the probability of 40deg+ race conditions is low.
Still, better to have too much temperature conditioning, than not enough on the time you need it. Your boxes look great.
Sutho wrote:- AMR Prototype Dual-Inline Stack AC Motors
Can you provide more details on these motors? What is AMR?
Great project. I see your using dual 800A fuses - bit overkill? Whats the pack voltage? Do you really expect to put that kind of power to the road?
