Title:
積層型電池
Document Type and Number:
Japanese Patent JP3972205
Kind Code:
B2
Abstract:
A laminated battery has a battery element in which a plurality of positive electrode sheets, which are each composed of a positive electrode collector in which positive electrode material has been applied and in which a portion to which the positive electrode material has not been applied extends from one side, and a plurality of negative electrode sheets, which are each composed of a negative electrode collector in which a negative electrode material has been applied over an area that is greater than that of the positive electrode material and in which a portion to which the negative electrode material has not been applied extends from one side, are alternately stacked with interposed separators. On the side of the connection unit with a negative electrode lead, a portion of the negative electrode sheets that protrudes from the portions that have been applied with positive electrode material curves toward the connection unit. The spacing from the edges of the positive electrode sheets to the connection unit with the negative electrode lead on the side of the connection unit with the negative electrode lead is less than the spacing from the edges of the portions to which the positive electrode material has been applied to the connection unit with a positive electrode lead on the side of the connection unit with the positive electrode lead.
Inventors:
Hiroshi Yagada
Makihiro Otohata
Masatomo Paddy
Makihiro Otohata
Masatomo Paddy
Application Number:
JP2003377236A
Publication Date:
September 05, 2007
Filing Date:
November 06, 2003
Export Citation:
Assignee:
NEC
International Classes:
H01M10/04; H01M4/64; H01M4/66; H01M6/46; H01M10/05; H01M10/0585; H01M50/178; H01M50/528; H01M50/529; H01M50/533
Domestic Patent References:
| JP2003229117A |
Attorney, Agent or Firm:
Masaaki Ogata
Akio Miyazaki
Ishibashi Masayuki
Akio Miyazaki
Ishibashi Masayuki