Hi guys! I’m assembling my first board soon (and consequently my first battery pack soon), and I was hoping I could get some feedback. I’m making a single stack 10S4P battery pack from Samsung 30Qs. Each battery group will be laid next to each other. How does this look? I would love some criticisms/corrections.
Is the wiring correct for a (discharge) bypassed BMS?
Are 4 wires between each serial pack overkill? / Is the serial connection between packs 5 and 6 overkill? (would one or two wires be sufficient?)
Should I have any fuses between the battery pack and connection to the FSESCs? I heard this is a no no, since if the fuse blows, you have no breaks. Plus the FSESC will shut off on its own when there is too much voltage/current.
Do the balance leads belong on the negative side?
It seems like this BMS comes with 11 leads (correct me if I’m wrong). Does the “b-” lead go to the negative end of the first battery group in the pack? There also seems to be a “b+” connection. Where does this go?
I came up with my diagram based on these:
b264’s diagram
The BMS I used
The fuse(s) I used
The charge port I used
I will be charging 42V @2.5A, if that helps/matters to know.
I plan on adding a light circuit in the future. A voltage step down is needed, correct? (Link: https://www.amazon.com/Pololu-Step-Down-Voltage-Regulator-D24V6F5/dp/B016VG8XI2)
If you’ve come this far, thanks for reading!