Cylindrical battery including electrode group and current collector plate
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHaruhisa YAGI, Yusuke MORIYAMA, Tomoaki SHINOBU, Takayuki HIROSE
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Abstract
In a winding electrode group a separator and an electrode plate are stacked and wound. A first current collector plate includes a ring member and a partial ring member. The partial ring member is joined, in a first welded part (embodiment), to each of a plurality of first electrode core members arranged in a radial direction of the electrode group. Of a plurality of first welded parts (embodiment), two first welded parts (embodiment) adjacent in the radial direction are disposed at positions shifted in a winding direction intersecting the radial direction.
Claims8
A cylindrical battery comprising:
- a winding electrode group formed by stacking and winding a separator and an electrode plate;
- and
- a current collector plate joined, in a welded part, to each of a plurality of ends of electrode plates arranged in a radial direction of the electrode group,
- wherein, of a plurality of welded parts, two welded parts adjacent in the radial direction are disposed at positions shifted in a winding direction intersecting the radial direction.
Dependencies are inferred from the claim text.