METHOD AND APPARATUS FOR HEAT TRANSFER IN A CYLINDRICAL BATTERY CELL

An electrochemical battery cell includes a plurality of first electrodes, a plurality of second electrodes, a plurality of layers interleaved between and stacked in an electrode stack along a central stack axis with the first and second electrodes, a first current collector, and a second current collector. The second current collector includes an elongated cylinder and a fluidic coupler, the second current collector extends axially through the central stack cavity, and the second current collector includes a flow channel extending longitudinally between a first end and a second end.