Project 1 Mechanical design of battery pack

Assumptions

Load voltage requirement : 72V

Load energy requirement : 3.24KWh

Conclusions from the assumptions

Capacity of battery pack should be : 45AH

Number of cells in series : 22

Number of parallel strings : 18

DC - DC converter is used to maintain constant voltage of 72V

ANR26650 plastic battery holder is used

For electrical connections between cells SIGMA clad strips are used and joined using spot welding

The whole battery pack is placed in an aluminium battery enclousre with fins on side for cooling the battery