Cylindrical lithium-ion battery with full terminal lug, pole and pole current collector plate assembly

Abstract

A cylindrical, full-pole lithium-ion battery, characterized in that it comprises a housing (4), a cell (5) and a pole and a pole current collector plate (3) assembly, wherein the cell (5) is located in the housing (4), the housing (4) is a grooved structure body, the housing (4) includes a bottom portion (42) and a bottom end surface (43), the assembly includes the positive pole (1), the positive current collector plate (3), the first insulating member (21) and the second insulating member (22), wherein the second insulating member (22) is disposed between the positive current collector plate (3) and the first insulating member (21); the positive pole (1) includes a conductive end (11), a connecting end (12) and a connecting rod (13), the conductive end (11) and the connecting end (12) are connected via the connecting rod (13), and all the width of the conductive end (11) and the width of the connecting end (12) are both greater than the width of the connecting rod (13);the connecting rod (13) penetrates the first insulating element (21) and the second insulating element (22) in turn, the first insulating element (21) is arranged closer to the conductive end (11) than the second insulating element (22), and there is a receiving space (23) between the first insulating element (21) and the second insulating element (22); the positive current collecting plate (3) includes a welding plate (31) and a conductive protrusion (32), the conductive protrusion (32) is arranged on the end surface of the welding plate (31) facing the second insulating element (22), and the end surface of the connecting end (12) facing the positive current collecting plate (3) is provided with a first groove (121), the contact portion of the positive current collecting plate (3) and the positive pole (1) is located away from the welding plate (31) its end surface facing away is a groove of the lower surface of the first groove (121);