Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ALUMINUM ALLOY SHEET FOR BATTERY CASE HAVING GOOD MOLDABILITY AND WELDABILITY
Document Type and Number:
WIPO Patent Application WO/2012/105143
Kind Code:
A1
Abstract:
The present invention provides an Al-Fe based aluminum alloy sheet having sufficiently high strength for application as a large lithium-ion battery container, as well as good moldability and good laser weldability. The cold-rolled aluminum alloy sheet has an elongation of 2% or more and tensile strength of 160 MPa or more, and has: a chemical composition comprising 0.3 to 1.5 mass% Fe, 0.3 to 1.0 mass% Mn, 0.2 to 1.0 mass% Cu, 0.2 to 1.0 mass% Mg, 0.002 to 0.20 mass% Ti, and 0.05 to 0.20 mass% Zr, with an Mn/Fe mass ratio of 0.2 to 1.0, and the remainder comprising Al and inevitable impurities, such inevitable impurities comprising less than 0.30 mass% Si; and a metallographic structure in which the number of second-phase particles with an equivalent circle diameter of 5 μm or more is less than 500/mm2. Alternatively, the aluminum alloy sheet is a cold-rolled annealed material having an elongation of 20% or more and tensile strength of 130 MPa or more.

Inventors:
SUZUKI KENTA (JP)
HORI HISASHI (JP)
KANAMORI KEIJI (JP)
Application Number:
PCT/JP2011/080110
Publication Date:
August 09, 2012
Filing Date:
December 26, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON LIGHT METAL CO (JP)
SUZUKI KENTA (JP)
HORI HISASHI (JP)
KANAMORI KEIJI (JP)
International Classes:
C22C21/00; H01M50/119; H01M50/131; C22F1/00; C22F1/04
Foreign References:
JP2003007260A2003-01-10
JP2000336448A2000-12-05
JP2007262559A2007-10-11
JP2007107048A2007-04-26
JP2008261008A2008-10-30
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Download PDF:
View/Download PDF      PDF Help
Claims:



 
Previous Patent: ENDOSCOPE SIGNAL CABLE

Next Patent: ALUMINUM ALLOY SHEET FOR BATTERY CASE HAVING GOOD MOLDABILITY AND WELDABILITY