Patent ID: 10249909

Abstract:
A nonaqueous electrolyte secondary battery including an electrode assembly the electrode assembly being fastened with a rectangular or square fixing tape applied to cover the end of the coil, the side of the fixing tape in contact with the electrode assembly including self-adhesive portions having a pressure-sensitive adhesive and a non-adhesive portion having no pressure-sensitive adhesive, the self-adhesive portions being disposed at both ends of the non-adhesive portion in the direction of the width of the fixing tape so that the non-adhesive portion is interposed between the self-adhesive portions, the battery satisfying 0.9≤Wb/Wa≤1 and 0.35≤Wc/Wa≤0.8 wherein Wa is the height of the electrode assembly, Wb is the width of the fixing tape and Wc is the width of the non-adhesive portion.