reverse-engineered BMS, Teensy3.2 based, working with Tesla module oem slaveboard


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Darkwing

Member
Joined
Feb 10, 2021
Messages
31
I misunderstood anti islanding. Totally agreed that the system cannot be allowed to push power to a grid that is shutdown.
Will read Jens's example.

Thanks for your time and effort it is highly appreciated. One question you didnt answer, will one SIMPbms work for 8 bmw battery packs alternatively 6 Tesla, or is it one pr pack ?
 

CarelHassink

Member
Joined
Oct 21, 2017
Messages
166
Really I want you to read the manual,
it's either or, but never mixed.
 

yasko

Member
Joined
Nov 10, 2017
Messages
81
Hi Darkwing,
If you have some time for reading, check my project here. It was inspired by Carel's idea of using EV batteries with HV hybrid inverters.
The system is working well, but it's still WIP, more like a proof concept.
And I have some concerns about using an HV system in DIY projects because HV DC is not a joke.
 

Darkwing

Member
Joined
Feb 10, 2021
Messages
31
Thread read. I like the hv for the same reason as you. Closed package minimum involvement in cabling.
However i have taken Carel's advice very serious, and will try and see if i can make it work as a 48volt system i think.
I will loose the enclosure, dont think it will allow for a rewiring. With 6 tesla batteries i can use a hv inverter but stay well below the 500volt mark.
But still think that the 48 may be the right road for someone not educated in electricity.
I'm required by law to have an actual electrician perform final install, but i will be honest, i will need to prove to myself it works before i pay for an electrician. I will spend some time reading up based on Carel's information. Will return with final results and decisions.
 

Lykke

New member
Joined
Oct 6, 2019
Messages
6
Darkwing, do you live in the Copenhagen area? I'll be happy to show you my setup and how I rewired the i3 batteries.
IMG_20210214_160330.jpgIMG_20210214_160419.jpg
 

Darkwing

Member
Joined
Feb 10, 2021
Messages
31
Hi Lykke
I would love to see your setup, and essentially run in your footsteps.
I can be reached at 20878138
Feel free to reach out anytime.
 

Aadithya2410

New member
Joined
Mar 17, 2021
Messages
5
Hi. I have a doubt regarding a part in the SIMP BMS code. I am not sure if this is the right place to ask but could someone please explain why there are only 5 Module ID requests when there are in total if I am not wrong, 8 Modules for the BMW i3 Pack. I was assuming this part of the code is to detect the module ID to establish communication. Any help is appreciated, thanks...

1615995359625.png
 

Aadithya2410

New member
Joined
Mar 17, 2021
Messages
5
Lykke,
small team working on it, Even in Norway, Tom in UK, Daniel and me in Holland,
actually 2 separate projects
1) getting the SIMP to talk to SMA SBS series
2) getting the SIMP to talk to the BMW cmu's

2) We have slow progress, thanks to Kai we now have the full can database of the BMW i3, but that was just 2 weeks ago
1) we bought a BYD 6.4 HV battery and a SMA SBS6 to hook up a can sniffer, Even from Norway would log into my home network to crack code etc.
that didn't work to well, so now we have moved all kit on pallet to Norway, and have it at Even's place.
Hopefully that will speed up process.

All code will be on Github when ready,
latest scores are GS YUASA LEV50N cmu (iMIEV etc), VOLT/Ampera cmu:
https://github.com/tomdebree

best Carel
Hi. I am also planning take up similar projects and am really interested to know about possibilities of getting the BMWi3 can database, dbc files of Modules, and Module IDs. Any help would be highly appreciated. Thanks
 

CarelHassink

Member
Joined
Oct 21, 2017
Messages
166
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Aadithya

I can tell you SIMPbms does work with BMW13 +i8 CSC modules but to a max of 8modules ( max 8 ID's)

Code on Github is what is shared.

Unfortunately I had to ditch efforts to try developing code to make the SMA SBS HV-inverters work

Just a friendly word: where did you purchase your SIMPbms??,

Carel

 

fstoiber

New member
Joined
Jul 5, 2021
Messages
2
Hello,

we connected the Sungrow SH10RT to our own battery.

communication works via CAN with a Raspberry PI.

Now we need a complete battery and a BMS that can communicate with the BMS in the battery for easy installation.

either a complete BMW i3 battery in the housing or a Tesla battery

BMW i3 Batterie
or
Tesla S Batterie 85kWh

Kind regards fstoiber
 

Aadithya2410

New member
Joined
Mar 17, 2021
Messages
5
Hello,

we connected the Sungrow SH10RT to our own battery.

communication works via CAN with a Raspberry PI.

Now we need a complete battery and a BMS that can communicate with the BMS in the battery for easy installation.

either a complete BMW i3 battery in the housing or a Tesla battery

BMW i3 Batterie
or
Tesla S Batterie 85kWh

Kind regards fstoiber
Hey we are also looking for continuous supply of BMW i3 battery packs. Where are you based?? Maybe we could help each other out.
 

Aadithya2410

New member
Joined
Mar 17, 2021
Messages
5
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Aadithya

I can tell you SIMPbms does work with BMW13 +i8 CSC modules but to a max of 8modules ( max 8 ID's)

Code on Github is what is shared.

Unfortunately I had to ditch efforts to try developing code to make the SMA SBS HV-inverters work

Just a friendly word: where did you purchase your SIMPbms??,

Carel

Hey yeah I'm working for Voltfang. So we had purchased the SIMP BMS from you.
 

CarelHassink

Member
Joined
Oct 21, 2017
Messages
166
Germany, Aachen. Awesome.
Aadithya, talk to Roman, your co-worker, it saves me the explanation on the subject of sourcing BMW i3's
I've sold Voltfang 7x BMWi3 60/94Ahr batteries so far.

Carel
 

CarelHassink

Member
Joined
Oct 21, 2017
Messages
166
Hello,

we connected the Sungrow SH10RT to our own battery.

communication works via CAN with a Raspberry PI.

Now we need a complete battery and a BMS that can communicate with the BMS in the battery for easy installation.

either a complete BMW i3 battery in the housing or a Tesla battery

BMW i3 Batterie
or
Tesla S Batterie 85kWh

Kind regards fstoiber

Hello fstoiber
Perhaps contact me via e-mail, or via messenger on facebook.com/carel1956

I have a couple of Tesla packs in stock,

best regards, Carel Hassink
 

SunshadeCorp

New member
Joined
Mar 26, 2022
Messages
1
Hello guys,

we are also working on connecting custom batteries to a Sungrow SH10RT inverter.
For this, we are using batteries from electric vehicles.
We have also set up the can communication using a Raspberry Pi.
We are completeley open source, so if you are interested you can visit our repositories at Github:

We managed to fake the CAN BMS communication to the inverter by replaying BYD battery communication.
I would be very interested in how you managed to reverse engineer the CAN communication.
Would you like to get in touch to talk about this?

Best Regards
Arne
 

mike200088

New member
Joined
May 3, 2022
Messages
1
Hello,

we connected the Sungrow SH10RT to our own battery.

communication works via CAN with a Raspberry PI.

Now we need a complete battery and a BMS that can communicate with the BMS in the battery for easy installation.

either a complete BMW i3 battery in the housing or a Tesla battery

BMW i3 Batterie
or
Tesla S Batterie 85kWh

Kind regards fstoiber
Hello fstoiber,

is it possible for you to share more details of your HV setup with the Sungrow hybrid. Do you have some CAN dbc to have a look?
I am also located in bavaria and working on it.

Best regards
Michael
 
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