Electrochemical cell asssembly
First Claim
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1. A method for making electrical contact to a foil electrode of an electrochemical cell comprising the steps of punching an array of apertures in a predetermined section of a rectangularly shaped conductive element;
- forming at least one pair of opposed teeth from the material punched from each aperture such that the teeth project from the same side of the conductive element, are longer than the thickness of the foil electrode, and are directed toward each other;
pressing the conductive element into the surface of the foil electrode such that the teeth pierce through the electrode; and
bending the teeth toward each other until they are flush with the opposite surface of the electrode.
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Abstract
This invention pertains to an improved means of making electrical and mechanical contact to metal foil electrode in an electrochemical cell. A conductive element is used which has a multiplicity of teeth projecting therefrom. The teeth pierce through the metal foil electrode and are bent over to be flush with the electrode surface. A strong mechanical and electrical bond results.
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Citations
4 Claims
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1. A method for making electrical contact to a foil electrode of an electrochemical cell comprising the steps of punching an array of apertures in a predetermined section of a rectangularly shaped conductive element;
- forming at least one pair of opposed teeth from the material punched from each aperture such that the teeth project from the same side of the conductive element, are longer than the thickness of the foil electrode, and are directed toward each other;
pressing the conductive element into the surface of the foil electrode such that the teeth pierce through the electrode; and
bending the teeth toward each other until they are flush with the opposite surface of the electrode. - View Dependent Claims (2, 3)
- forming at least one pair of opposed teeth from the material punched from each aperture such that the teeth project from the same side of the conductive element, are longer than the thickness of the foil electrode, and are directed toward each other;
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4. A method for making electrical contact to a foil electrode of an electrochemical cell comprising the steps of punching an array of apertures in a predetermined section of a rectangularly shaped conductive element;
- forming at least one pair of teeth from the material punched from each aperture such that the teeth project from the same side of the conductive element;
pressing the conductive element teeth first onto and through a first surface of the foil electrode and into the thickness thereof; and
forcing the material of the foil electrode to flow past and behind the teeth to hold the conductive element in good electrical and mechanical contact with the foil electrode.
- forming at least one pair of teeth from the material punched from each aperture such that the teeth project from the same side of the conductive element;
Specification