Method and equipment for forming electric core tab

Abstract

The invention discloses a method and equipment for forming an electric core tab. The method comprises the following steps: winding an electric core on a winding machine by a tab in an initial shape; and after finishing the winding operation, carrying out punch forming on the tab on the wound electric core. The equipment comprises a machine frame assembly, a punch assembly and a clamp feeding assembly, wherein the punch assembly comprises a corner cutting mould with a punching head and a corner cutting position, and a punching and cutting drive part; the punch assembly is mounted on the machine frame assembly; the clamp feeding assembly comprises a linear guide rail pair, a movable sliding table, a feeding drive part and a clamp; the linear guide rail pair is mounted on the machine frame assembly and extends to the corner cutting position of the corner cutting mould; and the clamp is mounted on the movable sliding table. Compared with the conventional mode that the tab on a single pole piece is formed and wound into the electric core in the prior art, the complicated processes are reduced, the process efficiency is improved, the tab is more stable to form, and the process quality of the electric core winding operation is easily guaranteed by accurately controlling the position and the shape of the tab.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a method and equipment for forming battery tabs. Background technique [0002] The tab forming process of the battery cell in the lithium-ion battery is a key link in the manufacturing process of the lithium-ion battery (especially the square lithium-ion battery). positive and negative electrodes. At present, the tab forming process is usually carried out before the cell winding process, that is, firstly use a tab welding machine or a laser cutting machine to process the tab on a single pole piece into a certain shape, and then make the processed tab in the The battery is directly wound into the winding machine. [0003] However, on the one hand, this tab forming method needs to use a special tab welding machine or a laser cutting machine to form the tab on a single piece of pole piece, which is complicated and has low process efficiency. The shape and dimensional accuracy of the lugs...

AI Technical Summary

Problems solved by technology

[0003] However, on the one hand, this tab forming method needs to use a special tab welding machine or a laser cutting machine to form the tab on a single piece of pole piece, which is complicated and has low process efficiency. The shape and dimensional accuracy of the lugs ensure the process quality of the cell winding, which puts forward high requirements for the winding accuracy of the winding machine.

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