| 摘要 |
<p>A flat alkaline storage battery comprising a low case having an open end and a bottomed end, a sealing plate which closes the opening of the case, an insulating gasket interposed between the case and the sealing plate, positive and negative electrodes housed in the case, a separator interposed between the positive and negative electrodes, and an alkaline electrolyte. Conventional storage batteries have involved the problems that the battery bulges when oxygen electrochemically produced at the positive electrode at the end of charging and when overcharged is consumed not rapidly, and that the contact resistance is liable to increase because the pressing force that causes the battery to be pressed on the case or sealing plate. An alkaline storage battery of the invention is an improvement free of the problems and comprising a spacer jointed to the inner bottom face of the case and having projections which define gas transfer paths distributed two-dimensionally between the inner bottom face of the case and the electrode, and/or a spacer jointed to the inner face of the sealing plate and having projections which define a gas transfer paths distributed two-dimensionally between the inner face of the sealing plate and the electrode.</p> |
