I am using Texas Inst IC for a lithium ion battery which is in the 4Serial-3Parallel cell configuration. In addition, I don't use LED or LCD in this lithium-ion battery. My cells have 3500mAh capacity.
I am planning to increase the number of parallel cells but I am not sure about maximum number of parallel cells(for example 4Serial - 8 Parallel Configuration).
Especially, my concern is about cell balancing. Becasue internal balancing current is 5mA.
What are your recommendations? Can I use this PCB with 4Serial-8Parallel configuration?
As I said before, I have PCB(with bq20z655-r1) and it is working very well for 4Serial-3Parallel configuration. Now I am planning to use 2 parallel PCB. I mean 4S-3P + 4S-3P with 2 PCB. Please check the image:
Maybe It can be solve something for balancing. What is your idea for that?
Please check this document for cell balancing: http://www.ti.com/lit/an/slua340c/slua340c.pdf