| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a square storage battery for back up use made of a nickel-hydrogen storage battery which has a large capacity, and in which desired charging efficiency can be obtained even under a high environmental temperature and the occurrence of leakage of liquid can be prevented surely. <P>SOLUTION: The square nickel-hydrogen storage battery 11 houses an electrolode plate group 20 comprising by laminating a positive electrode plate 21 containing a positive electrode material made mainly of nickel hydroxide and a negative electrode plate 22 containing a negative electrode material made mainly of a hydrogen storage alloy are laminated via a separator 23 in the square battery case 24 together with an electrolytic solution. External terminals 27, 28 of the positive electrode and the negative electrode are arranged on one face of the square case 24 and respective external terminals 27, 28 are sealed to duplicate by a plurality of annular packings 42, 45 at the penetrating part of the square battery case, and at least Co and Yb<SB>2</SB>O<SB>3</SB>are contained in the positive electrode material. <P>COPYRIGHT: (C)2004,JPO</p> |
