| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize winding slippage or exfoliation of a mixture layer at the time of winding by configuring an electrode group for battery to be wound so as to touch a separator having different coefficients of friction on both sides or a positive electrode plate and a negative electrode plate, which has a larger coefficient of friction, and to provide a nonaqueous secondary battery with high safety by minimizing heat generation due to internal short circuit by using the electrode group. <P>SOLUTION: The electrode group for battery is configured to be wound so as to touch a separator 14 having different coefficients of friction on front and rear sides or a positive electrode plate 12 and a negative electrode plate 13, which has a larger coefficient of friction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
