Battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakashi KAWAGUCHI, Ryota OKIMOTO
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Abstract
A battery includes an electrode group including a first electrode and a second electrode, a case housing the electrode group and having a bottomed cylindrical shape with an opening at one end, a sealing body sealing the opening, and a gasket provided between an opening end portion of the case and the sealing body. The sealing body includes a current collector plate electrically connected to the first electrode, and a cap with a disk shape overlaid on the outer side of the current collector plate and welded to the current collector plate. The cap includes a weld portion welded to the current collector plate, and a thick portion that is provided on the side toward the opening end portion relative to the weld portion and that is raised outward to be thicker than the weld portion.
Claims6
A battery comprising:
- an electrode group including a first electrode and a second electrode;
- a case housing the electrode group and having a bottomed cylindrical shape with an opening at one end;
- a sealing body sealing the opening;
- and
- a gasket provided between an opening end portion of the case and the sealing body,
- wherein the sealing body includes a current collector plate electrically connected to the first electrode, and a cap with a disk shape overlaid on an outer side of the current collector plate and welded to the current collector plate, and
- the cap includes a weld portion welded to the current collector plate, and a thick portion that is provided on a side toward the opening end portion relative to the weld portion and that is raised outward to be thicker than the weld portion.
Dependencies are inferred from the claim text.