Nonaqueous electrolyte secondary battery
AssigneeSony Corporation
InventorRyutaro Matsuoka
Life of this patent
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Abstract
A nonaqueous electrolyte secondary battery includes a battery can container which houses a wound electrode body formed by winding a belt-shaped anode and cathode isolated by a separator together with an electrolytic solution, an anode terminal fixed to the battery can container through a gasket, and a safety valve incorporated between the anode terminal and the wound electrode body. The safety valve includes a safety cover annularly formed, a stripper disk annularly formed, and a disk holder, annularly formed, which houses the stripper disk in the safety cover to fix and integrate the safety cover and the stripper disk therewith.
Claims11
A nonaqueous electrolyte secondary battery comprising:
- a battery can container which houses a wound electrode body formed by winding a belt-shaped anode and cathode, and isolated by a separator together with an electrolytic solution;
- an anode terminal fixed to the battery can container through a gasket;
- and
- a safety valve incorporated between the anode terminal and the wound electrode body, wherein the safety cover is formed with an annular-shaped protrusion for housing the disk holder therein, and the protrusion has a disconnection preventing portion for preventing disconnection of the disk holder,
- wherein the safety valve includes:
- an annular-shaped safety cover;
- an annular-shaped stripper disk;
- and
- an annular-shaped disk holder which houses the annular-shaped stripper disk in the annular-shaped safety cover, the annular-shaped stripper disk and the annular-shaped safety cover being fixed and integrated.
A nonaqueous electrolyte secondary battery comprising:
- a battery can container which houses a wound electrode body formed by winding a belt-shaped anode and cathode, and isolated by a separator together with an electrolytic solution;
- an anode terminal fixed to the battery can container through a gasket;
- and
- a safety valve incorporated between the anode terminal and the wound electrode body,
- wherein the safety valve includes:
- an annular-shaped safety cover;
- an annular-shaped stripper disk,
- an annular-shaped disk holder which houses the annular-shaped stripper disk in the annular-shaped safety cover, the annular-shaped stripper disk and the annular-shaped safety cover being fixed and integrated;
- and
- wherein the disk holder is formed by outsert-molding a thermoplastic resin wherein:
- the disk holder is outsert-molded so as to be internally fitted into the dropout preventing portion of the choking protrusion of the safety cover, and
- a flange of the disk holder protrudes toward a direction of protrusion of the choking protrusion of the safety cover.
Dependencies are inferred from the claim text.