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Discussion Starter · #1 ·
Hello I am very new electric conversion and ready to work on one. I have bought pretty much all the parts and in the process designing location of everything.
Below is the battery layout. There are 12 batteries total and use as 6S2P and is split to 8 back and 4 front.
The back battery will run all the way to the front and will that cause voltage difference since it is 10 ft?
Do you think this is a good idea?
I do wish to max out at 1000amp
Thanks you,
Ryan
 

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Below is the battery layout. There are 12 batteries total and use as 6S2P and is split to 8 back and 4 front.
The back battery will run all the way to the front and will that cause voltage difference since it is 10 ft?
There is voltage drop in every conductor, and there will be more drop in the long (10 foot) connection between modules than in the shorter connection, but since it is a series connection between pairs of modules that won't matter to the balance between modules - the current goes through each of them, and that's the important part.
 

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Discussion Starter · #6 ·
To me it's already assembled and I don't have the parts to link them together into 10s12P so I personally think this is the best way for me. If you have any other ideas I'm more than happy to consider it.
 

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To me it's already assembled and I don't have the parts to link them together into 10s12P so I personally think this is the best way for me. If you have any other ideas I'm more than happy to consider it.
The parallel connections are done by bus plates. Because there is one pair of threaded sockets for each pair of 8 Ah cells, in the 6P modules the plates have three rows of holes (at the ends) and six rows of holes (3 for positive one cell group plus 3 for negative of the next cell group); to reconfigure these modules to 5S12P you would replace those plates with plates twice as long (six rows of holes at the ends and 12 rows of holes for the other plates). With 5S12P modules you would then connect all modules in series for the same 30S12P overall pack. This would simplify the BMS substantially, but if the seller doesn't offer different sizes of bus plates (they don't appear to) you would need to custom-build the longer plates.
 

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Discussion Starter · #9 ·
I have consider that but it seems like copper busbar prices are too high that's why I followed this diagram by Orion bms and It seems like it will work for me. If it does not seem like a good idea to follow orion bms I'll find a way for longer busbars.
Rectangle Slope Font Parallel Pattern
 

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I have consider that but it seems like copper busbar prices are too high that's why I followed this diagram by Orion bms and It seems like it will work for me. If it does not seem like a good idea to follow orion bms I'll find a way for longer busbars. View attachment 127748
As you get the modules from Battery Hookup them, each module is wired the way the Orion diagram suggests - that's good. What you are proposing to do is connect each module in parallel with another module, which is not suggested by the diagram.
 

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Discussion Starter · #13 ·
As you get the modules from Battery Hookup them, each module is wired the way the Orion diagram suggests - that's good. What you are proposing to do is connect each module in parallel with another module, which is not suggested by the diagram.
So I decided to do what you proposed and this is the new diagram. Does this resolve the issues?
Rectangle Line Font Parallel Plot
 

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