Teh Stork said:
circuit said:
On every EV race contest. This is mandatory for all participants, written black on white in racing rules.
Also such fusing is available in my 18650 kit.
Well, I'm working as a consultant on a formula student car building the battery pack and I can tell you with 100% confidence that only one pack fuse is needed. So no, cell level fusing is not mandatory in every EV race contest.
Other rules include thermal monitoring of 2 thirds of cells and cell voltage monitoring on every cell.
This is strange, because many customers were talking about cell-level fuses. Also I recall this being discussed here on forums.
I will ask to show the document, when I get a chance.
Did a quick google search and found a nice english document. It is about snowmobiles, but probably not that much different. From page 51:
EV6.1.5 If more than one battery cell is used to form a set of single cells in parallel such that groups of parallel cells are then combined in series, then either each cell must be appropriately fused or the cell manufacturer must certify that it is acceptable to use this number of single cells in parallel. Any certification must be included in the ESF.
EDIT: the same text is in "Formula hybrid 2014 rules". Document attached.