Title:
SECONDARY CELL
Document Type and Number:
WIPO Patent Application WO/2012/014510
Kind Code:
A1
Abstract:
A secondary cell is provided with an electrode group that is charged with and discharges electricity, a can that has an opening and houses the electrode group therein, a lid that is welded to the opening of the can and seals the opening, a positive-electrode connection member and a negative-electrode connection member that each have one end electrically connected to the electrode group and the other end passing through the lid and protruding to the outside of the lid, and a positive-electrode external terminal and a negative-electrode external terminal that are respectively connected to the positive-electrode connection member and the negative-electrode connection member by caulking on the outside of the lid. In each of the positive-electrode connection member and the negative-electrode connection member, a caulked portion the diameter of which is enlarged is formed on the outside of the lid, and in the caulked portion, thin sections which can be laser spot welded are locally formed, and the thin sections are laser spot welded.
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Inventors:
AOTA, Kinya (1410, Inada, Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
青田 欣也 (〒61 茨城県ひたちなか市稲田１４１０番地 日立ビークルエナジー株式会社内 Ibaraki, 〒3120061, JP)
FUJITA, Toshiro (1410, Inada, Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
青田 欣也 (〒61 茨城県ひたちなか市稲田１４１０番地 日立ビークルエナジー株式会社内 Ibaraki, 〒3120061, JP)
FUJITA, Toshiro (1410, Inada, Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
Application Number:
JP2011/053971
Publication Date:
February 02, 2012
Filing Date:
February 23, 2011
Export Citation:
Assignee:
HITACHI VEHICLE ENERGY, LTD. (1410, Inada Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
日立ビークルエナジー株式会社 (〒61 茨城県ひたちなか市稲田１４１０番地 Ibaraki, 〒3120061, JP)
AOTA, Kinya (1410, Inada, Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
青田 欣也 (〒61 茨城県ひたちなか市稲田１４１０番地 日立ビークルエナジー株式会社内 Ibaraki, 〒3120061, JP)
日立ビークルエナジー株式会社 (〒61 茨城県ひたちなか市稲田１４１０番地 Ibaraki, 〒3120061, JP)
AOTA, Kinya (1410, Inada, Hitachinaka-sh, Ibaraki 61, 〒3120061, JP)
青田 欣也 (〒61 茨城県ひたちなか市稲田１４１０番地 日立ビークルエナジー株式会社内 Ibaraki, 〒3120061, JP)
International Classes:
H01M2/30; H01M2/06
Attorney, Agent or Firm:
NAGAI, Fuyuki (Fukoku Seimei Building2-2-2, Uchisaiwaicho, Chiyoda-ku, Tokyo 11, 〒1000011, JP)
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