Nonaqueous electrolyte solution secondary battery and manufacturing method thereof

PROBLEM TO BE SOLVED: To highly maintain the performance of a nonaqueous electrolyte solution secondary battery even when the nonaqueous electrolyte solution secondary battery in a charged state is stored in high temperature environment.SOLUTION: A nonaqueous electrolyte solution secondary battery comprises a winding electrode body configured by winding a cathode and an anode with a separator between them. The cathode has a cathode exposed part at one end in the width direction thereof, the cathode exposed part being configured such that a cathode mixture layer is not provided in a cathode electricity collecting body. The anode has an anode exposed part in the width direction thereof, the anode exposed part being configured such that an anode mixture layer is not provided in an anode electricity collecting body. At one end of the winding electrode body in the axial direction thereof, the cathode exposed part projects further outwards in the axial direction than the separator and anode. At the other end of the winding electrode body in the axial direction thereof, the anode exposed part projects further outwards than the separator and cathode. The cathode exposed part has a notch on the outermost peripheral part of at least the cathode.SELECTED DRAWING: Figure 3