Battery packaging material, method for manufacturing the same, and battery
AssigneeDai Nippon Printing Co., Ltd.
InventorsMakoto AMANO, Takanori YAMASHITA
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Abstract
A battery packaging material is configured from a laminate including, at a minimum, a polyester film layer, an aluminum alloy foil layer, and a heat fusible resin layer in the stated order. The thickness of the polyester film layer is 23-27 μm (inclusive), the thickness of the aluminum alloy foil layer is 27-43 μm (inclusive), the thickness of the heat fusible resin layer is 70-100 μm (inclusive), and the insulation breakdown voltage of the surface of the polyester film layer side is 13 kV or greater.
Claims13
A battery packaging material comprising a laminate in which, at least, a polyester film layer, an aluminum alloy foil layer, and a heat-sealable resin layer are laminated in this order,
- wherein a thickness of the polyester film layer is 23 μm or more and 27 μm or less,
- a thickness of the aluminum alloy foil layer is 27 μm or more and 43 μm or less, a thickness of the heat-sealable resin layer is 70 μm or more and 100 μm or less, and
- a dielectric breakdown voltage of a surface on a side of the polyester film layer is 13 kV or more.
A method for manufacturing a battery packaging material comprising a step of laminating at least, a polyester film layer, an aluminum alloy foil layer, and a heat-sealable resin layer in this order to obtain a laminate, wherein
- a thickness of the polyester film layer is 23 μm or more and 27 μm or less,
- a thickness of the aluminum alloy foil layer is 27 μm or more and 43 μm or less,
- a thickness of the heat-sealable resin layer is 70 μm or more and 100 μm or less, and
- a dielectric breakdown voltage of a surface on a side of the polyester film layer is 13 kV or more.
Dependencies are inferred from the claim text.