| 摘要 |
PURPOSE:To provide a battery having excellent performance by using band-like electrodes formed with many active material layers into a square pattern on a current collector, and winding them into a wound body to form an electrode body so that the current collector portion formed with no active material layer is arranged at the bent portion had a small radius of curvature, CONSTITUTION:Band-like electrodes formed with many active material layers into a square pattern on a current collector are used, and they are wound into a bound body to form an electrode body so that the active material layers are arranged on a pair of parallel sides. They are wound into the wound body to form the electrode body so that a current collector portion 22 formed with no active material layer is arranged. The electrode body is arranged with electrode presser plates 5 in parallel on both sides of the active material layers, and it is stored in an angular iron battery can 4 applied with Ni plating. Negative electrode leads 6 guided from negative electrodes 2 are welded on the upper inner wall of a battery can 4. Positive leads 7 guided from positive electrodes 2 are welded to a positive electrode external terminal 9 fitted to a cover body 8 via a polypropylene packing 10 in advance. |
