SolarMike
Posts: 4
Joined: Fri Jun 22, 2018 2:13 pm
Delivery Date: 22 Jun 2018

BMS decoded?

Fri Jun 22, 2018 4:59 pm

This has probably been asked before but has anyone actually figured out how to trick the BMS into working with a different battery pack? I have everything from a Leaf (going into my pickup truck) except the battery and due to not being able to find said Leaf battery, I am trying to find a way to make the system work with, for example, volt packs? Has anyone done it? The decoding is not up my alley, unfortunately.

MIke

GerryAZ
Gold Member
Posts: 1727
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: BMS decoded?

Fri Jun 22, 2018 10:51 pm

The BMS (Nissan calls it the LBC for lithium battery controller) is inside the battery case. If you have the LBC that was in your donor car along with the wiring harness and connectors, you should be able to make it work by connecting all of the cell voltage inputs to the cells of your alternative battery (assuming the same number of cells and approximately the volts/cell.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

cwerdna
Posts: 7912
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: BMS decoded?

Fri Jun 22, 2018 11:50 pm

I believe viewtopic.php?t=17470 refers to the BMS (LBC inside the pack).

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SolarMike
Posts: 4
Joined: Fri Jun 22, 2018 2:13 pm
Delivery Date: 22 Jun 2018

Re: BMS decoded?

Tue Jun 26, 2018 5:20 pm

Problem is, I do not have the battery case or batteries.

cwerdna
Posts: 7912
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: BMS decoded?

Tue Jun 26, 2018 6:16 pm

Cor at http://www.mynissanleaf.com/viewtopic.php?f=51&t=21997 gets them from wrecked/salvage Leafs.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SolarMike
Posts: 4
Joined: Fri Jun 22, 2018 2:13 pm
Delivery Date: 22 Jun 2018

Re: BMS decoded?

Tue Jun 26, 2018 7:04 pm

A lot to read. So far it doesn't look good for an event free swap.....if I can find a battery.

cwerdna
Posts: 7912
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: BMS decoded?

Wed Jun 27, 2018 1:33 am

^^^
If you're trying to use a Leaf's battery, powertrain and other EV bits for the basis of an EV conversion, you're probably best off going w/a Leaf pack. Other packs might have a different discharge curve for the modules and maybe not even the right configuration of modules/cells.

Is converting some ICEV (pickup truck?) into an EV your goal?

There's also the issue of needing to pair the car w/the pack. See viewtopic.php?f=51&t=21997&p=500684&hilit=mph#p500684 and viewtopic.php?f=51&t=21997&p=464829&hilit=mph#p464829.

Volt's battery pack has elaborate thermal management that Leaf doesn't: https://gm-volt.com/2010/12/09/the-chev ... explained/ and http://media.gm.com/media/us/en/chevrol ... ttery.html.

'13 Leaf SV w/premium package (owned)
'13 Leaf SV w/QC + LED & premium packages (lease over, car returned)
'06 Prius

Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SolarMike
Posts: 4
Joined: Fri Jun 22, 2018 2:13 pm
Delivery Date: 22 Jun 2018

Re: BMS decoded?

Wed Jun 27, 2018 3:39 am

Yes, I have two goals, one was to remove the entire traditional rear suspension from my truck and put a Leaf based "sub assembly" in it's place. The second one was to replace the current diesel with a smaller one and put another Leaf motor and inverter on it to charge the battery, for long range use only. The only thing I am missing from the the system is the battery and depending on how difficult it is to make thing talk to each other, the options would be either use the Leaf battery with loom, controller(s) et al or ditch it all and put in a couple Volt packs and start from scratch with controlling the battery charge, gauges and controls.

There is so much talk about how to work with this stuff but I am a coding liddite and need a black box to hook up to.

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