The invention relates to a cylindrical
cell adopting non-
welding conductive connection, which comprises an upper cover, a shell, a roll core and a conductive
adhesive, the roll core accommodated in the shell is formed by winding a negative plate, a positive plate, a first diaphragm and a second diaphragm, the negative
electrode leakage
current collector of which the positive
electrode plate is exposed out of the adjacent diaphragm is positioned at the one end of the roll core, the negative
electrode leakage
current collector is electrically connected with the adjacent bottom of the shell or the contact surface of the pole through a conductive
adhesive, the positive electrode leakage
current collector of which the positive electrode plate is exposed out of the adjacent diaphragm is positioned at the other end of the roll core, and the positive electrode leakage current collector is electrically connected with the adjacent contact surface of the pole or the bottom of the shell through a conductive
adhesive; and the conductive adhesive is composed of an electric conductor and a bonding body which are located on the same layer. The invention also relates to a preparation method of the cylindrical
battery cell adopting non-
welding conductive connection. The method has the advantages that the safety performance of the
battery cell is improved on the premise of not influencing the
energy density of the
battery cell, the low-
voltage defect of the battery
cell is improved, the manufacturing procedures are reduced, the equipment purchase and maintenance cost is reduced, and cost reduction and efficiency improvement are realized.