Non-aqueous electrolyte battery

A non-aqueous electrolyte battery comprising:

• an electrode body configured to be housed, in a cylindrical battery can, in a spirally wound arrangement, wherein:
• the electrode body includes:
• a sheet-like positive electrode and a sheet-like negative electrode;
• and
• a first separator laminate and a second separator laminate, between which one of the positive electrode and the negative electrode is interposed, and which are welded together by ultrasonic welding or heat welding at a first weld region provided along a first side in a longitudinal direction and a second weld region provided along a second side in the longitudinal direction opposing the first side;
• wherein the first separator laminate has two or more separators welded together by ultrasonic welding or heat welding at a third weld region provided along the first side and a fourth weld region provided along the second side;
• the second separator laminate has two or more separators welded together by ultrasonic welding or heat welding at a fifth weld region provided along the first side and a sixth weld region provided along the second side, the fifth weld region being disposed in contact with the third weld region in a non-welded state, and the sixth weld region being disposed in contact with the fourth weld region in a non-welded state;
• the third weld region and the fifth weld region are disposed outside a first outer edge, in a transverse direction of the first separator laminate and the second separator laminate, of the one of the positive electrode and the negative electrode, and
• the fourth weld region and the sixth weld region are disposed outside a second outer edge, in the transverse direction, of the one of the positive electrode and the negative electrode, the second outer edge opposing the first outer edge.