A needle for winded battery pole core

A volume needle of battery pole core used for winding comprises a column (1), wherein one end of the column takes the shape of a cone column which is provided with a groove (2) along the axial direction. The groove (2) divides the column (1) into two columns which are mutually separated: a column (3) and a column (4). The needle of battery pole core provided by the utility model further comprises shoring pieces (5) which are provided with at least two notches (6) and (7) while in use. The ends part of the two column (3) and (4) are positioned separately inside the two notches (6) (7), and distract the groove (2). The needle of battery pole core provided by the utility model is characterized in: simple structure, easy processing, less friction in volume needle extraction, assurance for winding quality of the battery pole core.