Welding method of aluminum foil
First Claim
1. A method of welding an aluminum foil having a dielectric layer formed thereon, which comprises the steps of:
- depositing a dielectric layer to a predetermined thickness on at least one side of an aluminum foil, said dielectric layer comprising a chemical conversion coated layer deposited on the surface of said aluminum foil;
placing said aluminum foil having said dielectric layer deposited thereon on a back bar made of a heat resistant material having good electrical insulating properties;
placing an electrically conductive-metal on the aluminum foil over said dielectric layer;
bringing first and second electrode tips into contact under pressure with the surface of the electrically-conductive metal, said electrode tips being spaced from each other by a predetermined distance; and
causing a welding current to flow between the first and second electrode tips, thereby conducting a series resistance welding of the aluminum foil to the electrically-conductive metal through said dielectric layer.
1 Assignment
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Accused Products
Abstract
A welding method of an aluminum foil, which permits the direct resistance welding of an aluminum foil, with a chemical conversion coated layer of Al2 O3 formed thereon, to a lead wire, includes placing an aluminum foil, with a chemical conversion coated layer formed on the surface thereof, on a back bar made of a material having good electrical insulating property and heat resistance, arranging an electrically-conductive metal on the aluminum foil, bring first and second electrode tips into contact under pressure with the surface of the electrically-conductive metal with the electrode tips spaced from each other and then causing a welding current to flow between the first and second electrode tips, thereby conducting the series resistance welding of the aluminum foil to the electrically-conductive metal.
44 Citations
10 Claims
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1. A method of welding an aluminum foil having a dielectric layer formed thereon, which comprises the steps of:
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depositing a dielectric layer to a predetermined thickness on at least one side of an aluminum foil, said dielectric layer comprising a chemical conversion coated layer deposited on the surface of said aluminum foil; placing said aluminum foil having said dielectric layer deposited thereon on a back bar made of a heat resistant material having good electrical insulating properties; placing an electrically conductive-metal on the aluminum foil over said dielectric layer; bringing first and second electrode tips into contact under pressure with the surface of the electrically-conductive metal, said electrode tips being spaced from each other by a predetermined distance; and causing a welding current to flow between the first and second electrode tips, thereby conducting a series resistance welding of the aluminum foil to the electrically-conductive metal through said dielectric layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification