| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing plate for a cylindrical battery cell with high productivity at an assembly process and excellent in airtightness. SOLUTION: For the cylindrical battery cell made by sealing in a battery outer package case nearly cylindrical electrode plate group spirally winding around a positive electrode plate consisting a positive electrode mixture containing a positive electrode active material in its strip positive electrode collector and a negative electrode plate consisting of a negative electrode mixture containing a negative electrode active material in its strip negative electrode collector with an interposition of strip separators, gasket layers of the sealing plate are made in multiple layers of two kinds or more of resin, made of either PBT, PPS, PP or nylon, and another layer over it made of either boron resin or acrylic resin. COPYRIGHT: (C)2008,JPO&INPIT |
