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reverse-engineered BMS, Teensy3.2 based, working with Tesla module oem slaveboard
#1
A while ago I picked up a conversation between Tom dBree and Daniel Boekel in another forum " https://www.diyelectriccar.com/forums/ "
Tom and Daniel were involved in developing this reverse engineered board based on the work of Colin Kidder
It's based on a Teensy 3.2 +Tom's refined code/board, and well what can I say,
it's just working.
Since Daniel is living in the next town, I had a visit and bought some boards to try out.

It has a build in canbus connection to Victron kit, and just works out of the box.
Good to know development just doesn't stop, meanwhile Mitsubsihi VW BMW drive batteries can be adressed too,
next will be can integration to Brusa and other chargers

See example of my test-rigg with a 2S2P ~48V ~20Kwh Tesla module set-up, Victron Color Control GX, Victron Quattro 48V5000
Features of the SimpleBMS:
-Overvoltage monitoring
-Temperature monitoring
-Undervoltage monitoring
-Balancing during charge
-Current measurement
-AH counter

Outputs
-Contactors/relays or other 12V signals
-pre-charge
-PWM 'gas/fuel' gauge control
-Serial interface for Victron VE direct

updated continously on Github
price:
€300 ex vat ex shipping 
bare board SimpleBMS + Teensy3.2 + code

All manuals + code on Github


We are based in Continental Europe, Netherlands
BR Carel Hassink

Crimp Daddy, ardenking5, Korishan And 3 others like this post
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
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#2
isn't that sods law if it works with Mitsubsihi could have bought this rather than batrium
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#3
Hello Arden,

Did you check forum's thread?? it's good reading
It is in no way comparable with Batrium, no graphical interface
all command line, through Arduino IDE serial interface,
only works on oem second-life batteries, limited brands.
Not included extra's: cabling/serial loop to link-up oem slave boards, LEM shunt/cable, contactors
This is a true diy kit + you need to have a more than basic skillset of building your storage battery.

but yes, me happy with it.

pricing €300 + VAT ~€363 ex postage
so not really cheaper either,
but a solution to some hard to hook up oem batteries like the Tesla modules VW modules BMW modules,
and yes it works with GS YUASA cells too, but with some effort (check the Simpbms manual)

At the moment working on a port of the Simp bms to HV voltage inverters like the SMA Sunny Boy storage 2,5-6 range
http://files.sma.de/dl/31186/SBS37-60-DE...V21web.pdf
But as allways slow process, and a long way still before finished for market entry.

best 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
#4
Thanks Carel

Going to watch this with interest have a few winter projects to keep me busy at the moment as well
inc water harvesting Smile
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#5
Simple BMS still for sale? How do I order?

Can we see manual to plan the build before ordering? Need to have an idea if its way over my head or not to get this system up and running.
Reply
#6
Hi there,
right,

I stock and sell these €300 ex vat/postage,
starterkit dinrail holder molex crimps etc available too

SIMPbms works out of the box with Tesla + GS YUASA cmu.
and will control features like setting of start voltage for balancing, balance hysteresis, can have values set for over/under voltage under/over temp etc.
I prefer to use Victron kit to work with SIMPbms, since these inverters have very wide adjustable voltage span
battery modules + SIMPbms = battery side, >>>connects with utp cable to can-port of Venus GX>>>>to inverter,  all done.
plus the rest of settings/cablework/switches/tripshunts etc

To hook up Tesla modules you need to make a daisy chain of connectors, best to recycle from scraps out of the Tesla battery box.
To hook up GS YUASA cell blocks: this is a can-loop bus, starts with 120 Ohm resistor, and must be terminated too ( done on Venus GX)
Keep YUASA CMU connectors from battery module cable loom + about 15cm length of wire, as the JST pins are a pain to crimp


 
I cannot attach pdf files, so just contact me by e-mail c.hassink@pro-lox.nl
or look on github here

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
#7
Great work, thank you :-)

We are in the process of getting a battery upgrade for our BMW i3's, so I will probably soon have one or two 60Ah/18.8kWh OEM BMW battery packs on my hand. I would like to use one or two of these old packs as battery storage for our PV system, ideally, I would like to keep the hole pack/casing intact and use a high voltage Inverter/Charger like Sunny Boy storage. Obviously I'll need a suitable BMS to make it work.

This seem to be more or less the project you are working on, how is your progress?
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#8
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
Lykke likes this post
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
#9
Thanks for the update Carel, will be great when your team crack this nut also. I would have liked to contribute, but I'm afraid this is way out of my league. I will follow the project here and on github, Maybe I can do something when it gets more applied.
Reply
#10
Lykke,
keep following me,
we need testers later

best Carel
Lykke likes this post
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


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