Tesla Model S Shunt

Topics concerning the Tesla front and rear drive unit drop-in board
Post Reply
nilsvr
Posts: 43
Joined: Fri Mar 18, 2022 9:49 pm
Location: Germany
Has thanked: 2 times
Been thanked: 3 times

Tesla Model S Shunt

Post by nilsvr »

Hi,

I have aquired the original Tesla contactors and additionally got the shunt from the battery pack. The only thread i found about this piece is from 2017 when Damien got one as a donation and posted about it on DIY Electric car forum.
https://www.diyelectriccar.com/threads/ ... nt.189858/
Sadly there was never an update post.

Did someone manage to use this shunt for current measuring or do i need to buy another one.

I am planning on using SimpBMS for the Battery (I3) and an LDU with the evbmw board.

Best regards
Nils
User avatar
tom91
Posts: 2300
Joined: Fri Mar 01, 2019 9:15 pm
Location: Bristol
Has thanked: 200 times
Been thanked: 527 times

Re: Tesla Model S Shunt

Post by tom91 »

Shunt requires isolated comms, and people have had it working. However this is not compatible with the SimpBMS.
Also be careful the OE Tesla Contactors are none economised thus need a diode and be setup as per SimpBMS usermanual.
Creator of SimpBMS
Founder Volt Influx https://www.voltinflux.com/
Webstore: https://citini.com/
nilsvr
Posts: 43
Joined: Fri Mar 18, 2022 9:49 pm
Location: Germany
Has thanked: 2 times
Been thanked: 3 times

Re: Tesla Model S Shunt

Post by nilsvr »

Thank you for the info.
Then i guess i will be on the lookout for another current sensor.
I also have the contactors from an I3 Battery pack and will check if they have an economizer. (And maybe there is even a current sensor in the I3 SME)
User avatar
asavage
Posts: 371
Joined: Sat May 14, 2022 10:57 pm
Location: Oak Harbor, Washington, USA
Has thanked: 356 times
Been thanked: 117 times
Contact:

Re: Tesla Model S Shunt

Post by asavage »

nilsvr wrote: Fri Jun 03, 2022 7:45 am I also have the contactors from an I3 Battery pack and will check if they have an economizer.
For those who follow: the i3 LIM sends PWM to non-economized contactors.
viewtopic.php?p=28239#p28239
Image
Al Savage
2014 RAV4 EV
NissanDiesel
Post Reply