Patent ID: 7585591

Claim:
A battery comprising: a unit cell including spirally rolled electrodes, wherein the spirally rolled electrodes include a cathode electrode and an anode electrode that extend spirally from a center of the unit cell in a direction of rolling such that a cathode outer end of the cathode electrode and an anode outer end of the anode electrode are located in the unit cell at a location that is furthest from the center of the unit cell, wherein the cathode outer end includes an inner surface that faces the center of the unit cell and an outer surface that faces an outer periphery of the spirally rolled electrodes, and wherein the anode outer end includes an inner surface that faces the center of the unit cell and an outer surface that faces the outer periphery of the spirally rolled electrodes; a jacket including a recessed section; a cathode lead terminal attached to the inner surface of the cathode outer end such that the cathode lead terminal extends perpendicular to the direction of rolling; and an anode lead terminal attached to the inner surface of the anode outer end such that the anode lead terminal extends perpendicular to the direction of rolling, wherein the recessed section includes an opening, the unit cell is placed in the recessed section such that the outer periphery of the spirally rolled electrodes faces the opening, and the recessed section is covered with a portion of the jacket, such that the cathode lead terminal and the anode lead terminal each extend straight out of the jacket without bending.