Battery winding needle

The utility model relates to a battery winding needle which comprises a winding needle body, the winding needle body comprises a left winding needle and a right winding needle, and the sections of the left winding needle and the right winding needle in the radial direction of the winding needle body are in non-mirror symmetry relative to a first axis. According to the winding needle, the winding needle body is of a non-mirror-symmetry structure, the rotating gravity center of the winding needle body deviates from the regular gravity center position of a conventional regular symmetrical winding needle, in the winding process, the winding needle conforms to the spiral shape of a winding core and changes along with the rotating angle, a pole piece can be automatically locked, and gaps between a diaphragm and positive and negative pole pieces can be reduced, so that the tension change of the pole piece is reduced; the stability is improved. 本申请涉及一种电池卷针，其包括：卷针本体，卷针本体包括左卷针和右卷针，左卷针和右卷针在卷针本体径向上的截面相对于第一轴线非镜像对称。本实用新型中，