 a different rate. 
% You can connect a detailed fluids component to the output port of the 
% battery to help in design optimization studies (example : cell-to-cell 
% cooling variation). 
% 
% * |Lumped thermal port|, connects every cell to the same thermal node 
% externally.
%
% * |Convection Boundary| specifies a convection boundary condition
% on the module face, with its own heat transfer coefficient.
% 
% * |Thermal lookup table| method specifies the heat transfer from battery
% cells to the coolant