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Discussion Starter · #1 ·
Hello wise folk,



I have a Hyper 9 low-voltage system with an AC1 controller, and I intend to fit these plus 5 Tesla modules to my Beetle.



I bought a chill plate with the controller which will obviously only be used when the motor is running.


I am aware the Tesla modules should be kept cool-ish, and at least at an even temperature to avoid hot spots. I am also aware that Li batteries don't like to be charged when cold.



I was intending to have one coolant circuit for the controller, and another for the batteries (which would need an in-line heating element when charging in the cold) but I'm wondering about combining the two circuits so as to only have one pump.


Anybody got any thoughts on this? Having two separate circuits with two pumps has its pros and cons - more to go wrong, but perhaps less complex than combining the two. In winter, heating the coolant whilst charging would also heat up the controller chill plate if i do combine them, which is not efficient but perhaps not problematic as charge is not coming from the batteries, and once the car is running the controller heat would heat them.



Many thanks.
 

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Discussion Starter · #2 ·
Hi, thanks for that.



I'm using an Orion BMS2, which seems very capable, but progress is very slow for me as I have a day job which eats almost all my time.


Have you used one of these with the Hyper9 setup yet? I am told that Netgain are releasing a firmware upgrade so that the Orion can limit current discharge via CAN - something I just assumed would work 'out of the box'.
 

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Discussion Starter · #4 ·
I believe the charger should work fine with the Orion over CAN, my fear was being able to control regen and discharge rates in the X1 controller via CAN.



I am planning to use Charge Enable and Discharge Enable (from the Orion) to close a contactor which would complete the battery -motor circuit. In that way, if the Orion decides that the pack cannot accept any charge (from regen) it can open the contactor if the CAN messages to the X1 are ignored.
 

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Discussion Starter · #5 ·
Yes, I got five modules from a P100D, so the higher energy density version (6.4KWh vs 5.2KWh). My provisional plan is to mount 2 up front, and 3 behind the rear seats, although I'd prefer to keep them all together if possible.
 

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Discussion Starter · #6 ·
Yes, I realised that after I bought the 36 cell version!


I think I will probably put an isolator between the packs, and I'll just have to remember to disconnect the Orion before I turn off the disconnect.
 
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