Title:
LITHIUM-ION SECONDARY-BATTERY CASE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/030918
Kind Code:
A1
Abstract:
This invention provides a lithium-ion secondary-battery case, and a manufacturing method therefor, that can be joined with no weld spatter and is strong with respect to external forces acting on said case. Said case is characterized in that: a cup component (2) comprises an austenite stainless-steel foil; a cap component (3) comprises a two-phase stainless steel that exhibits an austenite start temperature Ac1 between 650°C and 950°C during a temperature-raising process and has an austenite-ferrite two-phase temperature region starting at 880°C; said components are placed in direct contact with each other; and in a heating-temperature range of 880-1080°C, diffusion bonding is performed, accompanied by grain-boundary migration as the ferrite phase of the two-phase steel transforms into an austenite phase.
Inventors:
NORITA KATSUYA (JP)
MIURA NORIMASA (JP)
KUROBE JUN (JP)
MIURA NORIMASA (JP)
KUROBE JUN (JP)
Application Number:
PCT/JP2014/004368
Publication Date:
March 03, 2016
Filing Date:
August 25, 2014
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
C22C38/00; H01M50/119; H01M50/133; H01M50/159
Foreign References:
| JP2013041788A | 2013-02-28 | |||
| JP2013103271A | 2013-05-30 | |||
| JP2006179840A | 2006-07-06 | |||
| JP2004052100A | 2004-02-19 |
Other References:
See also references of EP 3174125A4
Attorney, Agent or Firm:
MORI, Yoshiaki et al. (JP)
Woods Yoshiaki (JP)
Woods Yoshiaki (JP)
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