Plate-like electric conductor for a busbar and the busbar formed therefrom

Patent metadata

Field	Value
Publication number	US-9362014-B2
Application number	US-201414243228-A
Country	US
Kind code	B2
Filing date	Apr 2, 2014
Priority date	Oct 11, 2012
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A plate-like electric conductor for a busbar having excellent electric conductivity, strength and bendability, and a busbar formed therefrom.
The electric conductor formed from an aluminum alloy plate having a thickness of 0.5-12 mm is obtained by subjecting an aluminum alloy consisting essentially of Fe: 0.05-2.0%; Si: 0.05-0.6%; Cu: 0.01-0.35%; by mass, and the balance comprising Al and inevitable impurities to a hot rolling process. The electric conductor has the electric conductivity of 55-60% IACS, tensile strength not lower than 170 MPa and yield strength not lower than 155 MPa, in the as-rolled state at the room temperature, and does not suffer from cracking upon bending by 90° with an inner bending radius equal to its thickness, while having the electric conductivity of 55-60% IACS, tensile strength not lower than 160 MPa, and yield strength not lower than 145 MPa, after a heat treatment at 140-160° C. for not longer than 1,000 hours.

First claim

The invention claimed is:

1. A plate-like electric conductor for a busbar formed from an aluminum alloy plate having a thickness (T) of 0.5-12 mm obtained by using an aluminum alloy consisting essentially of 0.05-2.0% by mass of Fe, 0.05-0.6% by mass of Si, 0.01-0.35% by mass of Cu, and a balance comprising Al and inevitable impurities, and subjecting the aluminum alloy to a hot rolling process so as to obtain the plate-like electric conductor having an electric conductivity of 55-60% IACS, in an as-rolled state at the room temperature,
wherein the plate-like electric conductor has a tensile strength not lower than 170 MPa and a yield strength not lower than 155 MPa, in the as-rolled state at the room temperature, and the plate-like electric conductor does not suffer from cracking when the plate-like electric conductor is bent by 90° with an inner bending radius equal to said thickness (T),
and wherein the plate-like electric conductor has the electric conductivity of 55-60% IACS, the tensile strength not lower than 160 MPa, and the yield strength not lower than 145 MPa, at the room temperature, after a heat treatment in which the plate-like electric conductor is held at a temperature of 140-160° C. for not longer than 1,000 hours.

2. The plate-like electric conductor according to claim 1 , wherein the aluminum alloy contains 0.1-1.6% by mass of Fe.

3. The plate-like electric conductor according to claim 1 , wherein the aluminum alloy contains 0.05-0.5% by mass of Si.

4. The plate-like electric conductor according to claim 1 , wherein the aluminum alloy contains 0.05-0.30% by mass of Cu.

5. The plate-like electric conductor according to claim 1 , wherein the aluminum alloy contains not more than 0.15% by mass of the inevitable impurities.

6. The plate-like electric conductor according to claim 1 , wherein the aluminum alloy plate has the thickness of 0.5-8 mm.

7. A busbar consisting of a plate-like electric conductor according to claim 1 .

Assignees

• Uacj Corp

Inventors

• Nakanishi Hidetaka
• Asano Mineo
• Tanaka Hiroki

Classifications

• C22C21/02

  with silicon as the next major constituent · CPC title

• C22C9/00

  Alloys based on copper · CPC title

• C22C21/00

  Alloys based on aluminium · CPC title

• C22F1/043

  of alloys with silicon as the next major constituent · CPC title

• C22C21/08

  with silicon · CPC title