Lithium battery winding needle

A lithium battery winding needle, comprising a first arc-shaped column (11), a second arc-shaped column (12), a third arc-shaped column (13), a fourth arc-shaped column (14), a first hinge point (21), a second hinge point (22), a third hinge point (23), a fourth hinge point (24), a first separator clip (31), and a second separator clip (32), wherein the first arc-shaped column (11), the second arc-shaped column (12), the third arc-shaped column (13), and the fourth arc-shaped column (14) are enclosed in sequence to form a cylindrical hollow chamber structure;

• the first arc-shaped column (11) and the second arc-shaped column (12) are hinged to each other through the first hinge point (21);
• the second arc-shaped column (12) and the third arc-shaped column (13) are hinged to each other through the second hinge point (22);
• the third arc-shaped column (13) and the fourth arc-shaped column (14) are hinged to each other through the third hinge point (23);
• the fourth arc-shaped column (14) and the first arc-shaped column (11) are hinged to each other through the fourth hinge point (24);
• and the first separator clip (31) and the second separator clip (32) are arranged in the cylindrical hollow chamber structure.