Electrical connection member, electrical connection structure, and method for manufacturing electrical connection member
AssigneeHitachi Metals, Ltd.
InventorsJunya NISHINA, Masaaki ISHIO
Life of this patent
Estimating the term…
Abstract
An electrical connection member (1, 301, 401, 501, 601) includes a clad material (10, 110, 610) including at least both a first Cu layer (12) made of a Cu material and a low thermal expansion layer (11) made of an Fe material or Ni material having an average thermal expansion coefficient from room temperature to 300° C. smaller than that of the first Cu layer, the first Cu layer and the low thermal expansion layer being bonded to each other.
Claims12
An electrical connection member (1, 301, 401, 501, 601) comprising:
- a clad material (10, 110, 610) including at least both a first Cu layer (12) made of a Cu material and a low thermal expansion layer (11) made of an Fe material or Ni material having an average thermal expansion coefficient from room temperature to 300° C. smaller than that of the first Cu layer, the first Cu layer and the low thermal expansion layer being bonded to each other;
- wherein
- a surface of the clad material on a side of the first Cu layer includes a first surface (14a) and a second surface (14b) connected to the first surface via a step (15) and located closer to the low thermal expansion layer than the first surface.
An electrical connection structure (100a) comprising:
- an electrical connection member (1, 301, 401, 501, 601) including a clad material (10, 110, 610) that includes at least both a first Cu layer (12) made of a Cu material and a low thermal expansion layer (11) made of an Fe material or Ni material having an average thermal expansion coefficient from room temperature to 300° C. smaller than that of the first Cu layer, the first Cu layer and the low thermal expansion layer being bonded to each other, the clad material having a surface on a side of the first Cu layer, the surface including a first surface (14a) and a second surface (14b) connected to the first surface via a step (15) and located closer to the low thermal expansion layer than the first surface;
- and
- a connection material to connect the electrical connection member to a connection target member in an electrical connection portion of the first surface or the second surface.
A method for manufacturing an electrical connection member (1, 301, 401, 501, 601), the method comprising:
- producing a clad material (10) including at least both a first Cu layer (12) made of a Cu material and a low thermal expansion layer (11) made of an Fe material or Ni material having an average thermal expansion coefficient from room temperature to 300° C. smaller than that of the first Cu layer, the first Cu layer and the low thermal expansion layer being roll-bonded to each other;
- and
- performing plastic working on the produced clad material to form, on a surface of the clad material on a side of the first Cu layer, a first surface (14a) and a second surface (14b) connected to the first surface via a step (15) and located closer to the low thermal expansion layer than the first surface.
Dependencies are inferred from the claim text.