Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Tesla module with SimpleBMS settings
#1
Hello 

I have 4 Tesla Model S modules. I am going to have a 48V setup. 
I am using SimpleBMS to control Victron Inverter and MPPT.
Can anyone help me by reviewing my settings for the BMS?

1 – Over Voltage Setpoint = Overvoltage limit per cell in mV 4200mV
2 – Under Voltage Setpoint = Under-voltage limit per cell in mV 3000mV

3 – Over Temperature Setpoint = Setpoint at which allowed discharge and charge current is reduced to zero 65.00C

4 - Under Temperature Setpoint = Setpoint at which allowed discharge and charge current is reduced to zero -10.00C

5 – Balance Voltage Setpoint = Setpoint of cell voltage in mV at which during charging cells will start balancing. 3.900mV
6 – Balance Voltage Hysteresis = Voltage required to be above the lowest cell to allow balancing of cell in mV 40mV


7 – Battery Capacity = each group of parallel cells monitored per slave capacity in Ah 100
8 – Max Discharge = maximum discharge current in A, transmitted current limit will taper from max current starting at discharge temp to zero at over temperature. 30.00A
9 – discharge voltage limit = used to calculate max discharge setpoint, voltage per cell will get converted to pack level by BMS 3200mV
Reply
#2
Hello Seawater, I sent you a PM, best Carel Hassink
pro-LOX, Carel Hassink, 
Obdam, Netherlands
36Kw ESS, 320 Yuasa LEV40 cells
14.2Kwp Ciggs solar panels, 2 Goodwe 3phase inverters
SMA SI 8.0 single phase + controls, REC BMS

second life ev/phev li-on batteries
follow me on facebook.com/Carel1956
Reply
#3
Hi, I'm setting up a similar setup with 2 tesla modules in parallel for a 24V ESS system and am having trouble finding some of the info for these settings as well.

For the max discharge is that per module or for the entire pack? 
I've seen discharge current listed as 1C / 233A continuous for these but wasn't sure if that's with the liquid cooling setup which I won't have.  Was hoping to draw 150A from these as a pack.
Reply
#4
Eli, seldom seen an inverter that can do 150A draw,
but no harm done to set it to 150A, the limitation is given by your inverter.

What model and brand is it?? a Victron make perhaps

Carel
pro-LOX, Carel Hassink, 
Obdam, Netherlands
36Kw ESS, 320 Yuasa LEV40 cells
14.2Kwp Ciggs solar panels, 2 Goodwe 3phase inverters
SMA SI 8.0 single phase + controls, REC BMS

second life ev/phev li-on batteries
follow me on facebook.com/Carel1956
Reply
#5
That's right, I'm using 2 Victron Multiplus 3000s in a split phase setup.  Thanks for the quick response!

Just to make sure do you know if that's 150A for each module giving 300A total?
Reply
#6
https://www.victronenergy.com/upload/doc...-US-EN.pdf
Max discharge/charge is 70A, if you connect 2xMP3000/70 total max = ~140A, so still under your setting of 150A in SIMPbms
pro-LOX, Carel Hassink, 
Obdam, Netherlands
36Kw ESS, 320 Yuasa LEV40 cells
14.2Kwp Ciggs solar panels, 2 Goodwe 3phase inverters
SMA SI 8.0 single phase + controls, REC BMS

second life ev/phev li-on batteries
follow me on facebook.com/Carel1956
Reply
#7
Looks like it's a 70A charge max from that document, discharge though I should be able to draw 3kW continuous (peak is 6kW) on battery which I assume should give 3000kW/24V=125A per Multiplus.  The install manual also recommneds a 300A fuse on the battery.  

I don't anticipate our loads going over 2-3kW so 150A should work fine.

Thanks again!
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)