A lithium battery packaging equipment

Abstract

The invention discloses a lithium battery plastic wrapping device, which comprises a base, and the base is provided with: a film feeding mechanism, which has two turntables for placing rolled films, and a tensioning mechanism is arranged on the film release path corresponding to each turntable in turn. Wheels and extruding parts for pre-expanding the flat roll film; the film cutting mechanism is set on the film release path, and is equipped with a film pulling component for pulling the roll film and a cutter for cutting the film; the coating workbench, the The film coating workbench described above is provided with a suction film assembly that is pulled apart by a roll film, and a push cylinder for pushing out the coated lithium battery; the feeding mechanism has a single row of feeding channels for transporting lithium batteries, and The end of the channel is provided with a cylinder that pushes the lithium battery into the unrolled film; the discharge mechanism has a discharge channel that accepts and pushes the cylinder to push out the lithium battery. Adjust the position of the splint, and the end of the discharge channel is provided with an elastic pressure plate acting on the lithium battery. The coating speed of the invention is fast and the quality is high.

Description

technical field [0001] The invention relates to the field of lithium battery production and manufacturing, in particular to a lithium battery plastic packaging equipment. Background technique [0002] Lithium batteries usually come in two shapes: cylindrical and square. The inside of the battery adopts a spiral wound structure, and a very fine and highly permeable polyethylene film separator material is used to space the positive and negative electrodes. The positive electrode includes a current collector composed of lithium cobalt oxide (or lithium nickel cobalt manganate, lithium manganate, lithium iron phosphate, etc.) and aluminum foil. The negative electrode consists of a current collector composed of graphitized carbon material and copper foil. The battery is filled with an organic electrolyte solution. In addition, a safety valve and a PTC element (partial cylindrical use) are installed to protect the battery from damage when the battery is in an abnormal state and...

AI Technical Summary

Problems solved by technology

[0005] There are many problems in the use of the existing coating equipment, such as: the film unwinding speed of the diaphragm unwinding mechanism is slow; the film tape is flat after cutting, and it is difficult to push the battery into the film tape; The location of the battery is uneven, resulting in inconsistent lengths of the coating at both ends of the battery cell; the coated lithium battery is discharged from the discharge channel, and is next to the conveyor belt that rolls down to the drying tunnel, and the film shrinkage film is bonded together, causing the film shrinkage to fail. Affect the coating quality of lithium batteries

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