Novel mylar membrane

Abstract

The utility model relates to the technical field of Mylar membranes, in particular to a novel Mylar membrane. The membrane comprises a bottom surface mylar membrane, and seepage holes are formed in the top surface of the bottom surface mylar membrane; the two sides of the top face of the bottom face mylar film are each fixedly provided with a side face mylar film wrapping piece, and side face holes are formed in the surfaces of the side face mylar film wrapping pieces. And large-area mylar film coating sheets are fixedly arranged on the two sides of the side-surface mylar film coating sheets. According to the novel mylar membrane, through the arrangement of the side surface pores and the large surface pores, the bottom surface mylar membrane is coated on the bottom surface of a battery, the side surface mylar membrane coating sheet and the large surface mylar membrane coating sheet are respectively coated on the side edges of the battery, the side surface pores are formed in the surface of the side surface mylar membrane coating sheet, and the large surface pores are formed in the surface of the large surface mylar membrane coating sheet. And after the electrolyte flows downwards, the electrolyte remaining on the mylar film can be infiltrated into the naked battery cell through multiple ways of large-surface pores and side-surface pores, so that the liquid injection efficiency is improved, and the infiltration effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mylar film technical field, concretely relates to a novel mylar film. BACKGROUND

[0002] Mylar film refers to a kind of tough polyester high molecular substance, with good heat resistance.Mylar film belongs to YAEB class insulating material, can effectively prevent the short circuit between different electrodes in battery.It can provide necessary electrical isolation between different components of battery, ensure that battery works safely and stably.

[0003] However, the traditional mylar film has no liquid permeation aperture on large face and side face, and the liquid injection efficiency is low, and the infiltration effect is poor.

[0004] Therefore, a novel mylar film is provided. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a novel mylar film to solve the problems of low liquid injection efficiency and poor infiltration effect.

[0006] To achieve the above-mentioned purpose, a novel mylar film is provided, which comprises a bottom surface mylar film, the top surface of the bottom surface mylar film is provided with a liquid permeation aperture, the two sides of the top surface of the bottom surface mylar film are fixedly provided with side surface mylar film cladding sheets, the surface of the side surface mylar film cladding sheet is provided with a side surface aperture, the two sides of the side surface mylar film cladding sheet are fixedly provided with large surface mylar film cladding sheets, and the surface of the large surface mylar film cladding sheet is provided with a large surface aperture.

[0007] As a further improvement of the technical solution, the number of liquid permeation apertures is several, and the several liquid permeation apertures are equidistantly arranged along the axial direction.

[0008] As a further improvement of the technical solution, the number of side surface apertures is several and the same as the aperture diameter of liquid permeation apertures.

[0009] As a further improvement of the technical solution, the large surface aperture has the same aperture diameter as the liquid permeation aperture, and the number of large surface apertures is several.

[0010] As a further improvement of the technical solution, the number of side surface mylar film cladding sheets and large surface mylar film cladding sheets is two groups, and the two groups of side surface mylar film cladding sheets and large surface mylar film cladding sheets are symmetrically arranged.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The new Mylar film piece is characterized in that the bottom Mylar film is wrapped around the bottom of the battery, the side Mylar film piece and the large-area Mylar film piece are wrapped around the side of the battery, the surface of the side Mylar film piece is provided with the side aperture, the surface of the large-area Mylar film piece is provided with the large-area aperture, and the electrolyte remaining in the Mylar film after flowing down can infiltrate into the bare battery through the large-area aperture and the side aperture, thereby improving the injection efficiency and the infiltration effect. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is a structure schematic view of the large-area aperture and the side aperture of the utility model;

[0015] Figure 3 It is a structure schematic view of the bottom Mylar film of the utility model.

[0016] The meanings of the various reference numerals in the drawings are as follows:

[0017] 1, bottom Mylar film; 2, liquid-permeable aperture; 3, side Mylar film piece; 4, side aperture; 5, large-area Mylar film piece; 6, large-area aperture. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] In the description of the utility model, it should be understood that the orientations or position relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientations or position relationships shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as a limitation on the utility model.

[0020] Please refer to Figures 1-3 The embodiment is aimed at providing a new Mylar film piece, which comprises a bottom Mylar film 1, and the top surface of the bottom Mylar film 1 is provided with a liquid-permeable aperture 2.

[0021] The bottom Mylar film 1 is fixedly provided with side Mylar film cover sheets 3 on both sides of the top surface, and the surface of the side Mylar film cover sheet 3 is provided with side apertures 4.

[0022] The side Mylar film cover sheet 3 is fixedly provided with large Mylar film cover sheets 5 on both sides, and the surface of the large Mylar film cover sheet 5 is provided with large apertures 6.

[0023] Through the arrangement of the side apertures 4 and the large apertures 6, the bottom Mylar film 1 is wrapped on the bottom surface of the battery, the side Mylar film cover sheet 3 and the large Mylar film cover sheet 5 are wrapped on the side edges of the battery respectively, the surface of the side Mylar film cover sheet 3 is provided with side apertures 4, and the surface of the large Mylar film cover sheet 5 is provided with large apertures 6. After the electrolyte flows down, the electrolyte remaining in the Mylar film can infiltrate into the bare battery through the large apertures 6 and the side apertures 4, thereby improving the liquid injection efficiency and improving the infiltration effect.

[0024] Please refer to Figure 3 The number of the liquid permeation apertures 2 is several, and the several liquid permeation apertures 2 are equidistantly arranged along the axial direction.

[0025] Through the arrangement of the liquid permeation apertures 2, the electrolyte at the bottom of the Mylar film can flow conveniently.

[0026] Please refer to Figure 2 The number of the side apertures 4 is several and the aperture diameter of the side apertures 4 is the same as that of the liquid permeation apertures 2.

[0027] Through the arrangement of the side apertures 4, the electrolyte at the side can flow conveniently.

[0028] Please refer to Figure 2 The aperture diameter of the large apertures 6 is the same as that of the liquid permeation apertures 2, and the number of the large apertures 6 is several.

[0029] Through the arrangement of the large apertures 6, the electrolyte at the large surface can flow conveniently.

[0030] Please refer to Figure 2 The number of the side Mylar film cover sheet 3 and the large Mylar film cover sheet 5 is two groups, and the two groups of the side Mylar film cover sheet 3 and the large Mylar film cover sheet 5 are symmetrically arranged.

[0031] Through the arrangement of the side Mylar film cover sheet 3 and the large Mylar film cover sheet 5, the battery can be wrapped.

[0032] Working steps: the bottom Mylar film 1 is wrapped on the bottom surface of the battery, and the side Mylar film cover sheet 3 and the large Mylar film cover sheet 5 are wrapped on the side edges of the battery respectively.

[0033] The surface of the side Mylar film covering sheet 3 is provided with side gaps 4, and the surface of the large Mylar film covering sheet 5 is provided with large gaps 6.

[0034] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel Mylar diaphragm characterized by: Including the bottom surface of the mylar film (1), the top surface of the bottom surface of the mylar film (1) is provided with liquid permeable aperture (2); Both sides of the top surface of the bottom surface of the mylar film (1) are fixedly provided with side surface mylar film covering sheet (3), the surface of the side surface mylar film covering sheet (3) is provided with side surface aperture (4); Both sides of the side surface mylar film covering sheet (3) are fixedly provided with large surface mylar film covering sheet (5), the surface of the large surface mylar film covering sheet (5) is provided with large surface aperture (6).

2. The novel Mylar diaphragm as claimed in claim 1, wherein: The number of the liquid permeable aperture (2) is several, and several liquid permeable apertures (2) are arranged equidistantly along the axial direction.

3. The novel Mylar diaphragm as claimed in claim 1, wherein: The number of the side surface aperture (4) is several and the same as the aperture diameter of the liquid permeable aperture (2).

4. The novel Mylar diaphragm as claimed in claim 1, wherein: The large surface aperture (6) is the same as the aperture diameter of the liquid permeable aperture (2), and the number of the large surface aperture (6) is several.

5. The novel Mylar diaphragm of claim 4, wherein: The number of the side surface mylar film covering sheet (3) and the large surface mylar film covering sheet (5) is two groups, and two groups of the side surface mylar film covering sheet (3) and the large surface mylar film covering sheet (5) are symmetrically arranged.

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