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US 12,609,420 B2Granted
Terminal component, secondary battery, and method for producing the terminal component
AssigneePrime Planet Energy & Solutions, Inc.
InventorsTakahiro Sakurai, Kota Ohata
Life of this patent
Estimating the term…
Abstract
A terminal component disclosed herein includes a first metal and a second metal stacked on the first metal. On the first metal, nickel is plated at least on a boundary surface with the second metal. A joining portion joined by diffusion of the metals is formed in a portion of a boundary between the first metal and the second metal.
Claims10
A terminal component comprising:
- a first metal formed of copper;
- and
- a second metal formed of aluminum or aluminum alloy, the second metal being stacked on the first metal,
- wherein, on the first metal, nickel is plated at least on an entire surface of a boundary surface of the first metal at an interface with the second metal, wherein the average thickness of the nickel plating in a central region of the boundary surface at the interface between the first metal and the second metal is less than the average thickness of the nickel plating on the boundary surface, and
- a joining portion jointed by diffusion of the metals is formed in the central region of the boundary surface between the first metal and the second metal, wherein in other regions of the boundary surface, there is less diffusion of copper into the second metal as compared to the amount of diffusion of copper into the second metal in the central region.
2 more elements
A method for producing a terminal component, the method comprising steps of:
- preparing a first metal formed of copper;
- preparing a second metal formed of aluminum or aluminum alloy;
- and
- electrically connecting the first metal and the second metal and joining a portion of a boundary surface of the first metal at an interface between the first metal and the second metal, wherein the joining is performed by diffusion of the metals in a central region of the boundary surface,
- wherein, on the first metal, nickel is plated on an entire surface of the boundary surface of the first metal at the interface with the second metal, wherein the average thickness of the nickel plating in the central region of the boundary surface at the interface between the first metal and the second metal is less than the average thickness of the nickel plating on the boundary surface, and
- wherein in other regions of the boundary surface, there is less diffusion of copper into the second metal as compared to the amount of diffusion of copper into the second metal in the central region.
3 more elements
Dependencies are inferred from the claim text.