Does the anatomy of this battery pack make sense ?
Its meant to be 8 in series and 4 in parallel.
I don’t think I got the 4 in parallel right ?
Also do you guys know what type of wires I need to buy for this, I have already bought a nickel/battery tab machine and the lithium ions (samsung) but I don’t know which wires to pick?
This gives me an idea for a modular type battery pack. I am very new to building packs and know very little about it so Im not sure if this will work at all but here goes. What if instead of soldering the packs in parallel, you took the positive lead and the negative lead and put them into and XT60/XT90 connector. Then did the same for each pack and connected them. This would be useful if you were flying and needed to break them down into smaller <99 WH packs (83.7=29.6) (29.63=88.8 WH) I was assuming a 3000mah cell for that last equation. Here is a digram that represents what I am saying.
U have 4 rows of 8 cells in series. Each cell is individual in this way. If u putt four in parallel…and then put that four in series with 4 in parallel etc. …then the parallel four cells will be working together as one and ull only need one balance wire for those 4
Im curious about these diagrams as well as I am trying to learn as much as possible about building your own pack. Would you point me in the direction of a diagram fro a compact or flat 10s3p 10s4p, or 8s4p? Preferably one that is easy to understand for a beginner in the field like me.
So my question is once I add a BMS will the first battery diagram post I made earlier work as a 8s4p battery pack making 8 series = 29.6 volts and 4 parallel = 10,000 mah in total??
Sorry guys I’m bit of an amateur at this, don’t know what “normal” sheme means?
the first you posted will make it very difficult to add a bms as while it’s said the cells are in parallel, they really aren’t and instead it’s 4 strings of cells in parallel. you want to put them in parallel so they are effectively one battery when in parallel. yes you’ll have 10ah either way but it’s about being able to add a bms. the last pic above the cells are grouped in parallel so they behave as one cell and you could add a bms volt sensor to one and they willl all show the same…as they’re truly in parallel
normal scheme
i wouldn’t say you have to attach each of the 8 wires to EACH of the 4 in parallel. you only need to attach to one in the four in parallel or just the tab and they’ll all have the same voltage
Hello, I am thinking of using a design like this my only question is where on each parallel group would you put the balance wire, and how exactly to make the bottom connection (the one that looks like a U on the very bottom) with nickel strip and a spot welder.
you can put the balance wires anywhere on the parallel pack and it’ll get the same voltage. maybe do a long strip of nickel for the bottom and spot weld the ends
dont know how much bending the tabs can do. likely. but if you just spot weld the two tabs at the bottom…no bending necessary. you’ll need longer tabs in that instance
Im sorry but I need a visual or something to understand exactly what you are saying as I am having a hard time understanding it. I am very new to building packs which is why.