BMS decoded?

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SolarMike

Member
Joined
Jun 22, 2018
Messages
5
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
 
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.
 
^^^
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 http://www.mynissanleaf.com/viewtopic.php?f=51&t=21997&p=500684&hilit=mph#p500684 and http://www.mynissanleaf.com/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-chevrolet-volt-coolingheating-systems-explained/ and http://media.gm.com/media/us/en/chevrolet/home.detail.html/content/Pages/news/us/en/2011/Feb/0214_battery.html.
 
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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