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This PCB essentially just has a connector mounted on it, which plug into the Analog Front-End devices to provide the inputs for voltage and temperature sensing. This makes wiring a lot more manageable, as each line from the battery goes into the PCB, and then a bundle comes out of each PCB to the BMS board.
Battery Modules
Individual 18650 cells are spot-welded together in parallel to form modules.They manufactured the ABS plastic brackets themselves, by milling them out using the CNC machine in the University of Minnesota mechanical engineering student shop. This involved using featureCAM to create tool paths and G-code to run the machine.
They created a jig so that the blanks could be bolted to a plate and then milled out, four at a time. This process took the team over 2 weeks to complete.
They spot-welded their battery pack to nickel strips through the bracket, using a spot-welder they built for their previous car (Daedalus).
Diamond Metal Products sponsored the laser-cut nickel pieces.
