INTERFACE BETWEEN JELLY ROLL AREA OF A BATTERY CELL AND CELL CAN

摘要

An embodiment is directed to a cylindrical battery cell, comprising a cell can, a jelly roll area of anode electrode, separator, and cathode electrode foils arranged in a middle section of the cell can. The anode electrode foils, the cathode electrode foils, or both extend out of the jelly roll area into an electrolyte area of the cell can. In one embodiment, some of the extended electrode foils are in direct contact with an end (e.g., top or bottom) of the cell can. In another embodiment, the extended electrode foils contact a plurality of connection taps that are thermally and electrically connected to an end (e.g., top or bottom) of the cell can. In another embodiment, the extended electrode foils are bent and stacked so as to function as a foil-integrated connection tap that is thermally and electrically connected to an end (e.g., top or bottom) of the cell can.