...

So it's a distributed topology that has a CAN interface which collates the cell data and responds to questions from the system CAN bus.

Mesh Network

Linear Tech acquired a company called Dust Networks in 2011, whose technology produces a wireless full-mesh network that supports redundant edge routing. This would allow for us to form clusters of BMS nodes, and then simplify wiring and design (and thereby the manufacturing process) and dealing with the persistent reliability issues associated with automotive wiring harnesses and connections in electric vehicles.

Redundant AFE Communications

Linear Tech released the LTC6813-1, which is likely the same chip that is used in the Tesla Model 3 (if not very similar). This provides a bidirectional isoSPI interface, allowing for a break in the isoSPI chain in one direction. The idea would be that the driver would alternate the direction of reads for every read, such that if one pair of lines broke, it would still be possible to receive data, albeit at half the rate.