| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crude cell for a high-capacity secondary battery and its manufacturing method. <P>SOLUTION: The crude cell for a high-capacity secondary battery is provided with a polymer film 20 inside a crude cell 10 for a secondary battery (or a crude cell for a high-capacity secondary battery wound and laminated in a roll shape (a cross-section spiral shape; a Jelly Roll type)) with unit cells 11 each equipped with a cathode plate 12, an anode plate 13 and a separator 14 alternately laminated by a fold/fold method to support the crude cell 10. With this, a structure of the crude cell 10 is firmly supported to prevent torsion by an external shock of the crude cell 10 and reaction of the crude cell 10 itself. As a result, short-circuiting can be prevented by electrical connection of the cathode plate 12 and the anode plate 13 inside the crude cell 10, and moreover, interface characteristics of the cathode plate 12, the anode plate 13 and the separator 14 can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT |
