| 摘要 |
PURPOSE:To lower the temperature rise of a battery due to heat generated at the time of high rate discharge, and prevent the occurrence of shortcircuit due to dislocation on active material surface and a wrinkle on each electrode plate by integrating a current collector body with resin, and making current collecting metal thickness equal to several times of resin thickness. CONSTITUTION:The lower end of a multilayer resin film 3 comprising a strip type resin film l bonded to another resin film 2 is removed, and aluminum 4 as current collecting metal is vacuum deposited on the entire surface of the film 2 to the thickness of approximately 500 angstrom (about 0.02 X thickness of film 3 and about 0.05 X thickness of film 2). Thereafter, the film 1 not covered with the aluminum 4 is peeled from the film 3. Furthermore, aluminum 5 is similarly applied to the reverse side of the film 2 not covered with the aluminum 4. Then, the aluminum 4 is removed to a constant pattern via the irradiation of a laser beam, thereby providing a current collector body 9 comprising the film 2 with a current collecting section 6, a large current cutout section 7 and a electrochemical reaction section 8 formed thereon. |
