| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a coin-shaped battery having a high discharge current characteristic, by housing a group of wound electrode plates in a case formed into a semicircular shell. SOLUTION: A positive electrode plate, a negative electrode plate and a separator, all of which are formed into bands each with a predetermined width, are wound flat with the separator interventing between the positive and negative electrode plates, and this group 1a of electrode plates, being square in top view, has its corners cut into straight or arc to improve space factor within a circular negative electrode case 5. Removal of moisture, which is problematic when the coin-shaped battery having a high load current characteristic is formed of a group of wound electrode plates, is accomplished by a vacuum drying process and the coin-shaped battery of high reliability can be formed by such manufacturing method as prevents dust generated during lead welding from being scattered into the case. |
