[BPS]

Thanks, Carel for your quick reply. And for finding replacement parts for me.

 

[x.l.r.8]

Hi Tom, I may be getting ahead of myself but I’m controlling the drive/neutral/reverse switching from an arduino with a WiFi board controlled by an android tablet. I will isolate the drive pins to the inverter when I switch the charge pin to high. Will the bms open the precharge contractor once the positive contractor is closed. I am using Damien’s controller for the 72A gen 3 charger, do I set the ‘max charge currrent’ to the max output of the charger ie the DC amperage at pack voltage. Do I need to lower it just in case when using the open EVSE supplying 40A as opposed to the clipper one supplying 80A. If so is there a way to do this once again using a serial adaptor to the pi zero W to enable the changes on the tablet that I’ll be using as a switch control and dashboard.

 

[Tomdb]

If you are using the SimpBMS code, yes pre charge opens again.

The max charge current of the Opensource Tesla Charger is on the AC input side.

You set this to the max your wiring in the car can handle, only in some cases will it be required to be altered for charging using a dumb socket.

When using an EVSE and having the CP and PP wired the Charger will limit its current based on what the EVSE can provide.

Currently there is no DC limiting in the open source chargers, something that has been on my list for while to look at.

 

[x.l.r.8]

Okay got it, I can run the 72A charger full charge as its not like I'm going for pack lifetime, I can a get cheap contactor for pre charge and get a couple of GV 200's for the main contactors.

 

[x.l.r.8]

I have another quick question, if I’m going to be using more than 300 amps can I simply swap out the CAB300 for the CAB1500 ?

 

[Tomdb]

Never heard of a CAB1500

The CAB500 will work as it has or should have same can message build up as the CAB300.

 

[joromy]

Hi Tomb.
Can i use your SIMP-BMS with one tesla battery module (6 cell, one BMB)

 

[Tomdb]

Hi Tomb.
Can i use your SIMP-BMS with one tesla battery module (6 cell, one BMB)

You can even usse a BMB down to 4 or 3 cells. The Simp BMS does not care how many cells are connected as long as you feed it 12V.