| 摘要 |
PROBLEM TO BE SOLVED: To provide a rectangular battery with a high capacity and its manufacture. SOLUTION: A battery has a generating element formed with two windings, for which a multiplex sheet A with at least two long sheets laminated is wound in the same direction or in mutually opposite directions with both longitudinal ends as winding start ends in such a manner that winding internal stress arising in winding is left. In this way the angular battery is easily formed. Still, an initial facing space between a positive electrode collector and a negative electrode collector is kept for a long time because the winding internal stress is left in the generating element, so that the battery can show stable capability and a long life. |
