| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery capable of preventing residual electrolyte on an insulation plate when the electrolyte is injected. <P>SOLUTION: A nickel-hydrogen secondary battery 2 comprises an outer can 10 whose upper end is opened; an electrode group 22, in which a positive electrode 24 and a negative electrode 26 are laminated via a separator 28, spirally wound and housed in the outer can 10; an upper insulation plate 32 arranged on a top of the electrode group 22 and having electric insulation; an electrolyte injected in the outer can 10 and impregnated in the electrode group 22; and a sealing body 14 fixed in the opening and sealing the opening by caulking an opening edge of the outer can 10. The upper insulation plate 32 has a liquid injection port 38 provided at its center and passing the electrolyte; an outer peripheral edge 42 having a size and a shape coincide with those of an inner peripheral edge of the outer can 10; and a funnel face 36 provided between the outer peripheral edge 42 and the liquid injection port 38 and indented toward a bottom wall 8 of the outer can 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
