Turbo3
Gold Member
Posts: 1974
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Mon Jul 04, 2016 10:48 pm

Here is an updated test version of LeafSpy Pro that adds any serial number information, if available, to an ECU listing.

2011 and 2013 data

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JeremyW
Posts: 1540
Joined: Sun Nov 13, 2011 12:53 am
Delivery Date: 23 Jun 2012
Leaf Number: 19136
Location: San Gabriel, CA

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Tue Jul 05, 2016 9:11 pm

NocturnalWalt wrote:There is other stuff I've found too, but I haven't put any time into making sense of it yet (I probably wont for a while either as my playing has lead me off in another direction). For anyone interested in taking this further themselves, these three requests to the LBC (one at a time) will read the current battery data stored in the LBC.

0x: 02 21 61 FF FF FF FF FF

0x: 02 21 62 FF FF FF FF FF

0x: 02 21 64 FF FF FF FF FF


I bet some of that data is in this: http://www.mynissanleaf.com/viewtopic.php?t=8260

:twisted:
Former 2012 SL leasee 6/23/12 - 9/23/15
Now driving Honda Fit EV, License plate: CHADEMO
2000 Honda Insight for long trips

NocturnalWalt
Posts: 21
Joined: Wed Dec 02, 2015 1:50 am
Delivery Date: 02 Dec 2015

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Wed Jul 06, 2016 4:32 am

Turbo 3 - That test version of LeafSpy Pro is evolving very nicely. Consult doesn't have the ability to read the Meter part number either which confirms exactly what you've already found. I hadn't tried firing that 84 serial number request at any of the other control modules, but that's interesting to know that things like the inverter and charger also report their serial number.

caederus - My interest/goals mostly hinge around having a lot more flexibility to swap and or upgrade the HV battery than we have now. Thanks for your offer of help - I'm sure I'll be able to take you up on that at some point. It is handy that you have a UK built Leaf. My 2013 Leaf is a JDM model and Turbo3's is USDM so that gives us a good base for us to compare findings against. I worked out the request/response IDs for different control modules by observing Consult making requests to the control modules I am interested in. Your LBC Serial results look quite different to the ones I've found and Turbo3 posted. They may be right, but it also might be worth re-checking your method and results.

I bet some of that data is in this: http://www.mynissanleaf.com/viewtopic.php?t=8260

JeremyW - Yeah I suspected the same thing.

caederus
Posts: 8
Joined: Sun Mar 20, 2016 9:34 am
Delivery Date: 01 Mar 2016

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Wed Jul 06, 2016 9:11 am

NocturnalWalt wrote:My interest/goals mostly hinge around having a lot more flexibility to swap and or upgrade the HV battery than we have now.
That would be great, and I'm sure we can get further along that path, though I suspect reprogramming any intentional safety/security checks will be tricky.

I worked out the request/response IDs for different control modules by observing Consult making requests to the control modules I am interested in.
Do you have access to one? I wish I did - it would be so useful for checking many things.

Your LBC Serial results look quite different to the ones I've found and Turbo3 posted. They may be right, but it also might be worth re-checking your method and results.
You mean query 79b, group 84? If that is also what Turbo3 is calling HV BATTERY, it doesn't seem so different to me.

Code: Select all

Yours   230SM114xxxxxxxx
Mine    230UK114BM001313
T3-2011 230JT1113A001477
T3-2013 230SM1135H000676


Here's the full candump log of the transaction:

Code: Select all

can0>79b#022184ffffffffff
can0<7bb#1016618432333055  ..a.230U
can0>79b#300100ffffffffff
can0<7bb#214b313134424d30  !K114BM0
can0>79b#300100ffffffffff
can0<7bb#2230313331332020  "01313
can0>79b#300100ffffffffff
can0<7bb#232020ffffffffff  #  .....
can0>79b#300100ffffffffff
timeout

NocturnalWalt
Posts: 21
Joined: Wed Dec 02, 2015 1:50 am
Delivery Date: 02 Dec 2015

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Wed Jul 06, 2016 2:18 pm

Sorry caederus! You are absolutely correct about your LBC serial number looking completely normal. What I somehow missed in your data was that you were just showing us the other control modules that also return serial numbers with that 84 request. Turbo3 obviously picked up on that, but I clearly wasn't paying attention or I was running in zombie mode after a long day or something :) Full credit to you for finding those. Yes I have somewhat frequent access to Consult.

Valdemar
Posts: 2497
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Fri Jul 08, 2016 12:00 pm

NocturnalWalt wrote:caederus - My interest/goals mostly hinge around having a lot more flexibility to swap and or upgrade the HV battery than we have now


And how is this progressing? Is there hope?
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
53.92AHr, SOH 84.5%, 140k miles

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NocturnalWalt
Posts: 21
Joined: Wed Dec 02, 2015 1:50 am
Delivery Date: 02 Dec 2015

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Wed Jul 13, 2016 3:18 am

Hi Valdemar. Yes there is certainly hope but my progress is slow. I think we will get there, but when is anyone's guess.

analyser
Posts: 17
Joined: Sun Apr 17, 2016 2:49 am
Delivery Date: 17 Apr 2016
Leaf Number: 021825

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Sun Jul 17, 2016 2:21 pm

NocturnalWalt wrote:.... Consult doesn't have the ability to read the Meter part number either ......

hm, pretty sure it did ....

analyser
Posts: 17
Joined: Sun Apr 17, 2016 2:49 am
Delivery Date: 17 Apr 2016
Leaf Number: 021825

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Sun Jul 17, 2016 2:33 pm

Turbo3 wrote:Here is an updated test version of LeafSpy Pro that adds any serial number information,....


Reading serial ... thats fine. Consult does that, but what is the practical application of knowing the serial?
Any plans to create the "Battery Programming Card" to be able to write into the LBS? Right now as others mentioned here - there is not much "flexibility" in swapping the pack. I would call it not a lack of flexibility but rather a huge issue - to open two packs and to swap the LBS (done recently in Auckland). Otherwise with the "card" handy it would not be required - just few minutes of reprog...

Turbo3
Gold Member
Posts: 1974
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: Active EV-CAN sampling: cell voltages, pack temperatures...

Fri Jul 22, 2016 4:07 pm

analyser wrote:
Turbo3 wrote:Here is an updated test version of LeafSpy Pro that adds any serial number information,....


Reading serial ... thats fine. Consult does that, but what is the practical application of knowing the serial?
Any plans to create the "Battery Programming Card" to be able to write into the LBS? Right now as others mentioned here - there is not much "flexibility" in swapping the pack. I would call it not a lack of flexibility but rather a huge issue - to open two packs and to swap the LBS (done recently in Auckland). Otherwise with the "card" handy it would not be required - just few minutes of reprog...

LeafSpy provides information like any good spy. It is up to the user(s) to decide how to use it. But knowing the battery serial number might tell you something about when/how the battery was manufactured if enough people report their data. Parts of the serial number might change based on chemistry or other interesting factors.

I would guess the "Battery Programming Card" generates a special code number required to marry the VCM and BMS ECU using the battery's serial number. A CAN trace of the process would tell us more about what is going on. I would thing the PCMCIA card includes an encryption chip so it is not going to be easy to bypass it. I don't recall seeing that card for sale so probably only dealers can get it.

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