Secondary cell , battery pack , electric vehicle , accumulate system, electric tool and electronic equipment

A secondary cell, battery pack, electric vehicle, accumulate system, electric tool and electronic equipment that can obtain excellent battery characteristic is provided. Secondary cell possesses the spiral -wound electrode body that has by the flat shape of major axis and minor axis regulation, and just / negative pole is at the inboard tip of the book of coiling orientation, contains just first /the negative pole winding portion who extends and install positive negtive terminal towards the major axis orientation, it is relative with first anodal winding portion that first negative pole winding portion is separating the diaphragm, the negtive terminal positive terminal overlapping of getting along well in the minor axis orientation, include still that one or two above ladders relax parts,first to third region at least one region inside the country, set up at least one in first anodal winding portion and first negative pole winding portion on, the book outside of anodal coiling orientation is more leaned on in