A Lithium battery combined core film driving device

Abstract

The invention discloses a lithium battery core-combining film removal device, which includes a core-combining assembly and a support assembly, the support assembly includes a support block for supporting the cover plate, and the core-compound assembly includes a support block arranged on the support block Composite core boards on both sides in the length direction, the film-catching conveyor belt is arranged on the board surface of the composite core board, the driving direction of the film-catching conveyor belt is perpendicular to the length direction of the support block, During the process, the running direction of the film-catching conveyor belt is from the inner end to the outer end of the composite core board. The film-catching conveyor belt has been constraining the insulating film, and the external force is applied to make the insulating film in a state of flattening and smoothing until the two composite core boards Until the battery core is completely clamped, the present invention has the following advantages: in the process of closing the core, the film-moving action of the insulating film can be automatically realized; the device can realize the film-moving while closing the core simply by relying on mechanical action, and the action is simple and reliable ; The whole process has no damage to the battery cell, which ensures the product quality.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a lithium-ion battery core-combining film driving device. Background technique [0002] At present, the assembly of lithium battery square batteries mostly adopts the ultrasonic butterfly welding process: the tabs 101 of the two batteries 10 face each other, and a connecting piece 103 is respectively placed under the positive and negative tabs, and then placed on the top of the positive and negative tabs respectively. Place a protective sheet 104, and finally use an ultrasonic welding machine to align the ultrasonic welding mark 102 to weld the connecting sheet 103, the tab 101, and the protective sheet 104 together; the insulating film 106 is matched with the cover plate 105; 10 is placed on the insulating film 106, and then the connecting piece 103 and the cover plate 105 are welded together by laser welding and aligned with the laser welding mark 1031...

AI Technical Summary

Problems solved by technology

[0003] However, the current difficulty in core assembly is that during the process of core assembly, the insulating film is always in a free and unrestrained state. Affected by gravity, the insulating film cannot be flattened or smoothed, so that the insulating film frequently appears on the glued cells. Convexity

This phenomenon will directly affect the back-end shelling, top cover welding and other processes, and there will be undesirable problems such as shelling scratches and welding explosion points. This is the bottleneck of battery assembly that needs to be solved urgently.

Images