ALKALINE SECONDARY BATTERY,申请号JP20040080442-传众专利搜索

ALKALINE SECONDARY BATTERY

申请公布号：JP2005268102(A)

申请号：JP20040080442

申请日期：2004.03.19

申请公布日期：2005.09.29

申请人：

SANYO ELECTRIC CO LTD

发明人：WAKINO MASAHIRO;AKAHO ATSUTOSHI;TAKEE MASAO

分类号：H01M2/26;H01M4/38;H01M4/52;H01M10/30

主分类号：H01M2/26

摘要：<P>PROBLEM TO BE SOLVED: To provide a battery in which reduction of self-discharge characteristics of the battery can be suppressed, and in which a sudden occurrence of short circuit can be prevented even in the case the amount of manganese contained in a hydrogen storage alloy is reduced and a battery to charge and discharge a large electric current is used for a long period. <P>SOLUTION: In an alkaline secondary battery having an electrode body composed so that a belt state positive electrode plate containing a cobalt compound and a negative electrode plate having an active material containing manganese pinch a separator, the negative electrode active material contains 3.0 mass % of manganese at maximum, and the positive electrode plate and the negative electrode plate make the ratio of length in the longitudinal direction and the short-length direction at least 15 in a mutually superposing region. By this, performance of self discharge is made to be superior, and this leads to prevention of deterioration of lifetime of the battery. <P>COPYRIGHT: (C)2005,JPO&NCIPI