Title:
SQUARE TYPE STORAGE BATTERY
Document Type and Number:
Japanese Patent JP3553755
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve charging and discharging cycle life by fitting, on respective electrodes, a square electrode body, the first collector tab attached on the top of the electrode body, and the second collector tab attached on the bottom of the electrode body.
SOLUTION: A negative electrode 14 consists of a negative electrode body 2 and two collector tabs 1. The two collector tabs 1 are attached diagonally at the top and bottom of the negative electrode body 2, that is, the tab 1 is attached on the upper left and lower right sides of the body 2 respectively. A positive electrode consists of two collector tabs in the same way as the negative electrode. A storage battery to which two collector tabs are attached diagonally on the electrode has the highest operating voltage. This is because polarization becomes larger when the collector tab is attached on the upper left side of the electrode, however, polarization is minimum as the whole electrode because another collector tab is attached on the lower right side. Resistance decreases, heat generation is suppressed during charging, and the negative electrode is suppressed from being corroded, thus it is possible to improve charging efficiency at the negative electrode.
Inventors:
Yoshinori Matsuura
Koichi Sato
Katsuhiko Niiyama
Reizo Maeda
Kozo Nogami
Ikuro Yonezu
Koji Nishio
Koichi Sato
Katsuhiko Niiyama
Reizo Maeda
Kozo Nogami
Ikuro Yonezu
Koji Nishio
Application Number:
JP3198997A
Publication Date:
August 11, 2004
Filing Date:
February 17, 1997
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M4/70; H01M2/26; H01M10/02; H01M10/30; (IPC1-7): H01M2/26; H01M4/70; H01M10/30
Domestic Patent References:
| JP52005433A | ||||
| JP6140021A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Hidehiko Ito
Yutaka Horii
Toshio Morita
Hidehiko Ito
Yutaka Horii