We never got it to work
we stopped the trial
probably chosen the wrong chemistry since BYD is Lifepo, and BMW i3 has NMC chemistry, so different discharge curve>
also SMA has a very propriety firmware not easy
Many more HV inverters currently available on the market, with better chances
take a look here
good luck
mfg Carel Hassink
Beiträge von CarelHassink
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Simon,
perhaps follow this thread,
a nice example of building a 3 phase Victron system, in steps.
https://secondlifestorage.com/…ith-tesla-batteries.7966/
(courtesy: Jens)
My advice is to read all you can on the subject at the Victron Energy website
https://www.victronenergy.de/ -
Please Simon,
I have given you loads of info in our direct mail exchange.
Keep it simple .
Stick to a 48V system, that will be a challenge on it's own.
Perhaps take a look at Victron Energy inverters these come with a 5 Year warranty,
imho one of the longest warranty time I see in the market place.
Victron Energy is more or less open source, and has an active online community,
Many examples of builds with Second-life ev batteries supported by SIMPbms and Victron systems
My take ditch the Kostal inverter
None of the top-brands are fond/eager to go open source,
or sort of cooperative to support what you are aiming for with HV storage -
Hello Siera,
Nissan has chosen for a decentralized BMS system 96S<
so no way SIMPbms could ever work with Nissan batteries
Your best choice will be rec-bms.com or batrium.com
Both of these producers have their bms working with Victron and SMA
none of them High Voltage however.
best Carel -
Leaf 30kWh, and 40Kwh drive batteriesarriving this and next week, c.hassink@pro-lox.nl
best Carel -
Lukas, please bare with me,
Maybe a mistake, but I never used the EMUS bms, and I'm sorry not being able to help
I work with a team to develop SIMPbms, a arduino based bms, with GNU licensed code,it makes use of the cmu's on batteries like Tesla/GS YUASA, BMW i3+i8 in pipline VW cells
I can only say it works for Tesla modules and by best in combination with a GX device + Victron inverter/chargers>
more info check my facebook page facebook.com/carel1956
see attached manual -
No, not really,
More info on the retrofit AC coupled system of Victron can be fond here:https://www.victronenergy.com/…esign-installation-manual
best Carel -
Hi,
your "old inverter" is that the pv inverter??,if so you would need an ac coupled charger inverter anyhow,
like the SMA SI
or my preference the Victron MultiPlusII 48V/5000/70 / 24V/3000/35,
or check out the new Victron MultiPlusII-GX, with Venus GX brain, directly connected with SIMPbms, and VE-bus smart-shunt
"Old inverter" being a battery charger/inverter non-can
Sure you could use contactors to shutdown at set charge/discharge voltage, but would loose the elegance of can-control, throttling down current at end of charge ( and many more values adjustable etc)
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Hello,
perhaps check this link, a very nice example of a 2S Tesla module set-up using SIMPbms and Victron kithttps://secondlifestorage.com/showthread.php?tid=7966
we've been playing around with the potential of our SIMPbms,currently working with cmu based battery blocks that can be found in:
Tesla model S+X (TESLA3 under work)
Mitsubishi Outlander + I-miev and sisters, GS YUASA LEV40N +50N
GM VOLT/ Opel Ampera
BMW I3 (beta-testing)
can control over SMA Sunny Island + Victron inverters
we prefer Victron, since their voltage span is widely adjustable from 38V-66V,whereas SMA SI range is more limited 43-63V
a small team is currently undertaking a project to crack, reverse engineer the SMA SBS HV series can-protocol to BYD HV battery, and to implement a man in the middle option to use SMPbms and HV ev batteries like Tesla, BMW, Mitsubishi.
unfortunately it's a tough cookie to get it working right...., any help from the community is welcomeCarel
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Hello,
thanks for the pointer,
yep we do know Damien, Tom and Damien were working on the Tesla cmu before,
Damien is very much involved with second-life ev cars, hacking motor controllers and the lot.
Not so much with SMA solar/battery inverters,
but thanks, we need all the help we can get from the community
when ready, all info will be on Github
to give it back to the community of enthousiastic diy'ers
best Carel