The battery pack is 63V 90AH with '21700' cells. There are 2 types for it, one is 15 cells in series and 18 cells in parallel for one battery pack unit. Another one is a big box and insert 6 battery pack unit in parallel, each battery pack unit consists of 15 cells in series and 3 cells in parallel. Communication via CAN bus protocol.
My questions is：
- What the different between one unit and 6 unit for balance, charge and discharge?
- How to deal with the communication among the 6 6 battery pack unit?
- Base on TI the solution and experience, which type is better? Why?
- Please base on above to provide the solution? If still need detail information, please let me know.
