Energy storage device
AssigneeGS Yuasa International Ltd.
InventorKenji KAWATE
Life of this patent
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Abstract
An energy storage device (battery) includes an electrode assembly having current collecting tabs, each of which is formed of a plurality of projecting portions, projecting from a first straight line portion on one side in a stacking direction of electrode sheets. The electrode assembly is housed in a case (exterior body). The energy storage device further includes current collectors, which are electrically connected to the external terminals, disposed on the case. The current collectors, are connected to the current collecting tabs, arranged in a stacking direction of the electrode sheets, on a second straight line portion side where the projecting portions, are not formed.
Claims8
An energy storage device comprising:
- an electrode assembly having a positive electrode sheet and a negative electrode sheet stacked alternately with a separator interposed therebetween, and a positive electrode current collecting tab and a negative electrode current collecting tab formed of projecting portions which project from a first portion on one side in a stacking direction of the respective electrode sheets, the electrode assembly being housed in a case;
- a positive electrode external terminal and a negative electrode external terminal disposed on the case;
- and
- a positive electrode current collector and a negative electrode current collector disposed between the electrode assembly and the case, electrically connected to the respective external terminals, and electrically connected to the respective current collecting tabs on the other side in the stacking direction of the respective electrode sheets, the other side being a second portion side of the respective electrode sheets.
Dependencies are inferred from the claim text.