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US 9,178,186 B2Granted
Cell
AssigneeSony Corporation
InventorsKazuhito Hatta, Mashio Shibuya
Life of this patent
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Abstract
A cell in which thermal welding of a laminate packaging is performed so that the thickness of a thermal welded portion including an electrode terminal is larger than that of a thermal welded portion including no electrode terminal.
Claims14
A cell comprising:
- a cell element including a positive electrode, a negative electrode and an electrolyte;
- a laminated film comprised of an exterior resin layer an interior resin layer and a metal layer and sealed to have a sealing portion, the sealing portion having a sealed portion and an edge portion;
- and
- electrode terminals electrically connected to the cell element and extending through the sealing portion to outside of the edge portion of the laminated film,
- wherein,
- the sealed portion is thermal welded,
- the edge portion is not thermal welded and is located at an outermost edge of the laminated film,
- a thickness t2 of the edge portion of the laminated film is larger than a thickness t1 of the thermal welded portion and a thickness t4 of thermal welded portions including the electrode terminals is larger than a thickness t3 of the thermal welded portions without the electrode terminals, and
- in cross section, the sealing portion has a y-shape.
6 more elements
A cell comprising:
- a cell element including a positive electrode, a negative electrode and an electrolyte;
- a laminated film enclosing the cell element and being composed of an exterior resin layer an interior resin layer and a metal layer, a sealing portion of the laminated film having a sealed portion on which thermal welding has been performed and an edge portion on which thermal welding has not been performed, the sealed portion being between the edge portion and the cell element, the edge portion being at an outermost edge of the laminated film;
- and
- electrode terminals electrically connected to the cell element and extending through the sealing portion to outside of the edge portion,
- wherein,
- in cross section, a greatest thickness t2 of the edge portion is larger than a thickness t1 of an outer thickness ti of the sealed portion when both the sealed portion and the edge portion include an electrode terminal or both the sealed portion and the edge portion do not include an electrode terminal, and a thickness t4 of sealed portion including the electrode terminals is larger than a thickness t3 of the sealed portion without the electrode terminals.
3 more elements
Dependencies are inferred from the claim text.