| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery which has enhanced the liquid filling efficiency of an electrolyte and the performance of the battery. SOLUTION: The battery 10 includes a power generation element 20 in which a positive electrode plate and a negative electrode plate are laminated, and a battery case 14 which holds the power generation element 20 and which has a liquid filling hole 12 blocked after used for filling the electrolyte from an exterior. In the battery 10, the inside of the part of the battery case 14 opposed to the liquid filling end face of the power generation element is recessed in a curved surface. A space 22 is provided between the liquid filling end face of the power generation element and the inside of the part opposed to the liquid filing end face of the battery case 14. Further, the liquid filling hole 12 is formed in the part of the battery case 14. The electrolyte filled from the liquid filling hole 12 is retained in the space 22, and permeated from the liquid filling end face into the power generation element. COPYRIGHT: (C)2005,JPO&NCIPI |
