Sealed cylindrical nickel-metal hydride storage battery

A method for producing a sealed cylindrical nickel-metal hydride storage battery comprising:

• an electrode group;
• a metal case for accommodating said electrode group;
• and
• a seal plate provided with a safety vent, for sealing an opening of said metal case,
• said electrode group being composed of at least one non-sintered type hollow cylindrical electrode of one polarity, at least one non-sintered type hollow cylindrical electrode of the other polarity, and a separator for separating these electrodes from each other, wherein said electrodes are arranged alternately in the form of concentric circles with the separator interposed therebetween so that the electrode of the one polarity is located in the center;
• and
• wherein each of said electrodes is constructed in a configuration comprising vertically split bodies or a slit in a vertical direction, one piece of continuing separator separates the electrode of one polarity from the electrode of the other polarity, and the separator which is wound only one turn to cover an outer side of the inner electrode goes through a clearance between the split bodies or the slit of the outer electrode and is connected to its portion covering an outer side of said outer electrode;
• the method comprising the steps of:
• (a) preparing electrodes having a configuration comprising vertically split bodies or a slit in a vertical direction, one piece of long separator, and a core;
• (b) arranging the electrode of one polarity around the core holding an end of the separator, drawing the separator out of said electrode of one polarity from a clearance between the split bodies or the slit of said electrode and winding the separator only one turn on an outer side of said electrode;
• (c) arranging the electrode of the other polarity on an outer side of said wound separator, drawing a remaining portion of said separator out of said electrode of the other polarity from a clearance between the split bodies or the slit of said electrode and winding said separator on an outer side of said electrode;
• (d) repeating the step (c) until the number of remaining electrode is 1;
• and
• (e) arranging the remaining electrode on an outer side of an outermost turn of said wound separator.