A film tearing method and film tearing device and film tearing machine applied in the method

Abstract

The invention discloses a film tearing method for the surface coating of an electric core and a film tearing device and a film tearing machine applied in the method. The film tearing method includes a step of applying glue, a step of preparing a film for tearing, and a step of tearing the film. This film tearing method can simultaneously tear off the upper film and the lower film on the surface of the battery cell, which improves the production efficiency of the tear film, and tears the film at a uniform speed, which can prevent the film from being left on the surface of the battery cell during the film tearing process. Imprints and wrinkles, which meet the requirements of no imprints and no wrinkles on the surface of the battery cell after tearing off the film. The film tearing device includes a power transmission core mechanism and a battery connection mechanism, an upper tape clamping mechanism and a lower tape clamping mechanism; this film tearing device and a film tearing machine using the film tearing device improve the film tearing production efficiency , It also meets the requirements of no marks and no wrinkles on the surface of the battery cell after tearing off the film, and the structure is simple.

Description

technical field [0001] The invention relates to the field of a film tearing method and film tearing equipment, in particular to a film tearing method of a battery surface protection coating and a film tearing device and a film tearing machine applied in the method. Background technique [0002] The existing film tearing method uses the clip of the film tearing device to pick up the upper film at the front end of the battery cell to be torn off, tears the film from the front end of the battery cell to the rear end, and then wraps around the battery core from the rear end, and then wraps the film from the rear end of the battery cell. Tear off the film at the front end until the lower film is completely removed. This method is to tear off the upper film of the battery first, and then go around to the bottom of the battery and continue to tear the lower film of the battery. The movement track of the clip is similar to a U shape. , but this U-shaped trajectory film tearing metho...

AI Technical Summary

Problems solved by technology

[0002] The existing film tearing method uses the clip of the film tearing device to pick up the upper film at the front end of the battery cell to be torn off, tears the film from the front end of the battery cell to the rear end, and then wraps around the battery core from the rear end, and then wraps the film from the rear end of the battery cell. Tear off the film at the front end until the lower film is completely removed. This method is to tear off the upper film of the battery first, and then go around to the bottom of the battery and continue to tear the lower film of the battery. The movement track of the clip is similar to a U shape. , but this U-shaped trajectory film tearing method, because when the upper film is torn to the rear end of the battery cell, the rear end of the battery cell and the lower film can be torn off, and the battery cell must be kept still for a while, and then the front end of the battery is clamped. Keep the upper surface and the lower surface of the rear end suspended without restraint, so that the clip can continue to tear the upper film at the rear end of the cell, and go around the U-shaped track to the bottom of the rear end of the cell to continue tearing off the lower film at the rear end of the cell, and finally the remaining The lower film at the front end of the battery cell cannot be torn off. The battery cell must be stopped again, and the rear end of the battery should be clamped again so that the lower surface of the front end is suspended without binding, and then the lower film at the front end is torn off, which belongs to: tearing the upper film without binding -Stop avoiding the jig--re-clamp the front end of the cell (the lower film is clamped and bound)--loosen the rear end of the cell (exposing the bound rear end of the upper film and the rear end of the lower film)--tear without restraint Membrane—stop again to avoid the jig—re-clamp the rear end of the cell again—loosen the front end of the cell (exposing the bound front end of the lower film)—the interrupted tearing method of tearing off the unbound front end of the lower film must go through two The above interrupted tearing method of stopping, avoiding and restarting the tearing film

Since the upper film of the battery cell is torn off first, and then the film is torn off, and the battery is restarted after at least two interruptions, the efficiency of battery tearing film is reduced. After stopping and restarting, the surface of the battery is prone to wrinkles and marks. In order to ensure the next process of the battery cell For the use of batteries, it is necessary to increase the surface cleaning process of the batteries to remove wrinkles and marks, resulting in low film tearing efficiency in the entire battery manufacturing process, and there is a follow-up battery surface cleaning process, which makes the entire battery production process Low efficiency and many steps affect production efficiency and increase production cost

[0003] In the existing method of tearing the film, the structure of the corresponding film tearing device is also relatively complicated due to the need to stop and avoid the battery cell many times during the film tearing process, clamp and position it multiple times, and then start to tear off the corresponding film at the fixture.

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