I think it is good that the rows of cells are staggered so the basic pattern is an equilateral triangle rather than a square. This would allow for a higher density of cells.
You need to have a fuse wire or very narrow tab (1mm?) from each cell to the bus. I believe one per cell is sufficient. The other cell terminal can be tabbed in parallel which is easier than tabbing to the bus. So unless you can run an 8mm tab in parallel let's say on the V- side between the cells, then this design requires double number of tabs to bus, which is somewhat more labour intensive.
The 1s30p module is too small, I think. You would need 96 of these to make a 96s30p pack. I am building the same idea to extend the range of a Leaf by 12 kWh, and the layout is 14s10p banks with two in series in the same enclosure to make a module, and then 3.5 modules in series - namely the 4th module will have a center tab and only one of the two banks will be used, with the other bank unused in the Leaf: 3.5s2s14s10p for an equivalent of 98s10p. The batteries are the NCR18650B, 3.4 Ah each. Placing and connecting 96 modules will not be easy, as compared to 4 modules (12kWh) or 7 modules (24kWh).
Each module will contain a charger, two 14s balancers and protection circuits, two cell group DVM so each of the 14 groups in a bank can be manually checked, and a module digital ammeter.
One nice feature of this design is that each module is nominal 50V (when the two banks inside a module are connected in parallel - 2p14s10p) which matches the 48V standard for propulsion motors. So the modules can easily double as 48V (or 96V or 144V) packs for non-Leaf applications.
Here is a thread and picture for it:
http://www.diyelectriccar.com/forums/showpost.php?p=909826&postcount=22
You need to have a fuse wire or very narrow tab (1mm?) from each cell to the bus. I believe one per cell is sufficient. The other cell terminal can be tabbed in parallel which is easier than tabbing to the bus. So unless you can run an 8mm tab in parallel let's say on the V- side between the cells, then this design requires double number of tabs to bus, which is somewhat more labour intensive.
The 1s30p module is too small, I think. You would need 96 of these to make a 96s30p pack. I am building the same idea to extend the range of a Leaf by 12 kWh, and the layout is 14s10p banks with two in series in the same enclosure to make a module, and then 3.5 modules in series - namely the 4th module will have a center tab and only one of the two banks will be used, with the other bank unused in the Leaf: 3.5s2s14s10p for an equivalent of 98s10p. The batteries are the NCR18650B, 3.4 Ah each. Placing and connecting 96 modules will not be easy, as compared to 4 modules (12kWh) or 7 modules (24kWh).
Each module will contain a charger, two 14s balancers and protection circuits, two cell group DVM so each of the 14 groups in a bank can be manually checked, and a module digital ammeter.
One nice feature of this design is that each module is nominal 50V (when the two banks inside a module are connected in parallel - 2p14s10p) which matches the 48V standard for propulsion motors. So the modules can easily double as 48V (or 96V or 144V) packs for non-Leaf applications.
Here is a thread and picture for it:
http://www.diyelectriccar.com/forums/showpost.php?p=909826&postcount=22