| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress performance deterioration of a battery in which a winding axis portion of a power generating element is provided with a winding core. <P>SOLUTION: A nonaqueous electrolyte secondary battery comprises a power generating element in which a positive electrode plate, a negative electrode plate, and separator are wound, and a winding core disposed in a winding axis portion of the power generating element and made of a resin. Since a layer made of an alkali-resistant resin is provided between the winding core and the power generating element, a reaction between the winding core and the electrode plates or a nonaqueous electrolyte contained in the separator is prevented. <P>COPYRIGHT: (C)2012,JPO&INPIT |
