massive battery bank connections
massive battery bank connections
(OP)
Hi,
I'm working on an automation project that's going to be powered by 12v batteries. This is going to have 48 of the largest odyssey batteries. These will be connected in parallel connected groups of 4 batteries, 16 groups total. The question is how to switch between groups. Do both + and - terminals need to be switched with relays, or can one side all be connected to a common buss, and only switch one leg?
I believe both legs needs to be switched, otherwise the charge will equalize between groups at a different potential (among other problems). But I'm getting some persistent arguments against me, and if we only switched one leg it would use half as many relays.
Any thoughts?
mk
I'm working on an automation project that's going to be powered by 12v batteries. This is going to have 48 of the largest odyssey batteries. These will be connected in parallel connected groups of 4 batteries, 16 groups total. The question is how to switch between groups. Do both + and - terminals need to be switched with relays, or can one side all be connected to a common buss, and only switch one leg?
I believe both legs needs to be switched, otherwise the charge will equalize between groups at a different potential (among other problems). But I'm getting some persistent arguments against me, and if we only switched one leg it would use half as many relays.
Any thoughts?
mk





RE: massive battery bank connections
If so then you only need to tie all the negatives together and to the load and then switch between your groups of batteries.
Weird setup you're planning.
Keith Cress
kcress - http://www.flaminsystems.com
RE: massive battery bank connections
Mike Halloran
Pembroke Pines, FL, USA
RE: massive battery bank connections
There are almost certainly single cells with sufficient capacity to avoid having to parallel strings, which will simplify the scheme somewhat. Example manufacturers would be Hoppecke, SAFT, Alcad, Enersys to name a few.
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