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US 9,070,919 B2Granted
Positive electrode tab lead, negative electrode tab lead, and battery
AssigneeShowa Denko Packaging Co., Ltd.
InventorsKiyoshi Tada, Daisuke Hashimoto, Satoshi Yamazaki
Life of this patent
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Abstract
The present invention is to provide a positive tab lead capable of being connected with each other with a sufficient connection strength at a low energy cost. It is constituted such that a partial coating layer (13) made of nickel, tin or solder is formed on at least a part of a region of an aluminum plate (11) exposed to an outside of an outer cover. It is preferable to form a chitosan layer (14) containing one or more compounds selected from the group consisting of chitosan and chitosan derivatives on the surface of the tab lead.
Claims5
A positive tab lead comprising:
- an aluminum plate;
- a partial coating layer made of nickel, tin or solder formed on at least both sides of a region of the aluminum plate to be exposed to an outside of an outer cover;
- and
- an insulating tab film thermally welded to both sides of a longitudinally intermediate region of the aluminum plate such that the insulating tab film extends over both of at least a portion of the region where the partial coating layer is formed and at least a portion of the region where the partial coating layer is not formed;
- wherein
- the insulating tab film is not provided over an outer end region of the aluminum plate;
- and
- an edge portion of the outer cover is arranged such that the edge portion pinches the insulating tab film, and the edge portion of the outer cover is sealed to the insulating tab film.
5 more elements
Dependencies are inferred from the claim text.