| 摘要 |
PURPOSE: An energy storage device is provided to improve electrical resistance by securing a sufficient contact area between a current collection unit and an electrode device. CONSTITUTION: An electrode device(40) includes an anode electrode, a cathode electrode and a separator. An opening is respectively formed on the center of the anode electrode, the cathode electrode, and the center of the separator. The separator is interposed between the anode electrode and the cathode electrode. A first current collection unit(52,54) is combined with the upper side and the lower side of the electrode device. A second current collection unit(62,64) is combined with the upper side and the lower side of the electrode device through the central opening. A housing(72,74) receives the electrode device. The electrolyte is filled inside the housing. The anode electrode, the cathode electrode, and the separator have a circular shape. |
