Title:
【発明の名称】密閉型アルカリ蓄電池
Document Type and Number:
Japanese Patent JP3326274
Kind Code:
B2
Abstract:
PURPOSE:To restrain the self-discharge, and improve the preserving characteristic by arranging a sulfonated polypropylene resin nonwoven fabric sheet in a position to get wet in alkaline electrolyte. CONSTITUTION:A sulfonated polypropylene resin nonwoven fabric sheet 2 is arranged so as to cover a winding base end part 1a with one electrode sheet (a positive electrode sheet or a negative electrode sheet) 1. In this case, since a corner part of the winding base end part 1a of the sheet 1 becomes hard to break through a separator 3 at winding time, a preserving characteristic is improved, and in addition, a generating rate of an internal short circuit is reduced. A position where the sulfonated polypropylene resin nonwoven fabric sheet is arranged in a battery can is set in a place to get wet in alkaline electrolyte. Thereby, leakage of the electrolyte is hardly caused in the last stage of charging or at overcharge time, and a movement in the electrolyte of a nitrate ion or the like being a decomposed product material of polyamide resin is checked, and self-discharge becomes hard to be caused, so that a preserving characteristic can be improved.
More Like This:
| JP2000082452 | ALKALINE MANGANESE SECONDARY BATTERY |
| JPH05307948 | LEAD-ACID BATTERY |
| JPS5583158 | ALKALINE CELL |
Inventors:
Reizo Maeda
Yoshito Konno
Mitsuzo Nogami
Koji Nishio
Toshihiko Saitoh
Yoshito Konno
Mitsuzo Nogami
Koji Nishio
Toshihiko Saitoh
Application Number:
JP7947094A
Publication Date:
September 17, 2002
Filing Date:
March 25, 1994
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01M2/16; H01M2/18; H01M2/34; H01M10/28; (IPC1-7): H01M10/28; H01M2/16; H01M2/18; H01M2/34
Domestic Patent References:
| JP5121063A | ||||
| JP62115657A | ||||
| JP4137368A | ||||
| JP3295177A | ||||
| JP3184275A | ||||
| JP4174964A | ||||
| JP6457568A | ||||
| JP7130392A | ||||
| JP513097A | ||||
| JP7263017A | ||||
| JP193075A | ||||
| JP6111847A | ||||
| JP4174965A |
Attorney, Agent or Firm:
Tomohiro Matsuo