Nonaqueous electrolyte secondary batteries

A nonaqueous electrolyte secondary battery comprising:

• an electrode assembly including a negative electrode plate and a positive electrode plate wound together via a separator, die negative electrode plate including a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector, the positive electrode plate including a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector;
• a nonaqueous electrolyte;
• a bottomed cylindrical exterior case accommodating the electrode assembly and the nonaqueous electrolyte;
• and
• a sealing member sealing an open end of the exterior case, wherein
• the negative electrode plate has a first exposed portion of the negative electrode current collector and a second exposed portion of the negative electrode current collector which are exposed from the negative electrode active material layer on a coiling start end and on a coiling finish end, respectively,
• at least part of the second exposed portion of the negative electrode current collector is in contact with an inner face of a sidewall of the exterior case,
• a first negative electrode lead and a second negative electrode lead are joined to the first exposed portion of the negative electrode current collector and to the second exposed portion of the negative electrode current collector, respectively,
• the first negative electrode lead and the second negative electrode lead each lead out from one end face of the electrode assembly toward a bottom of the exterior case, and
• the first negative electrode lead is joined to the bottom of the exterior case, and the second negative electrode lead is joined to the first negative electrode lead.