CN216928772U

CN216928772U - Protection film assembly for matte coating surface

Info

Publication number: CN216928772U
Application number: CN202220171169.3U
Authority: CN
Inventors: 韩德辉; 宋莉; 张东华
Original assignee: Hunan Wanqi Technology Co ltd
Current assignee: Hunan Wanqi Technology Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-08
Anticipated expiration: 2032-01-21

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a protection film component for the surface of a matte coating, which solves the problem that in the prior art, when the protection film component is impacted by the outside, deformation is possible, and even liquid in a lithium battery can be leaked, so that explosion accidents are caused. The protection film assembly for the surface of the matte coating comprises a back glue piece, an outer buffer layer, an inner buffer layer and an insulating layer, wherein the outer buffer layer is positioned on the outer side of the inner buffer layer, the outer buffer layer comprises an outer pressure-resistant layer, and an outer wrinkle layer is adhered to the inner side of the outer pressure-resistant layer. According to the protective film component, due to the arrangement of the protective layer and the outer buffer layer, when the battery is subjected to an external acting force, the outer buffer layer and the inner buffer layer can deform to buffer the acting force, so that the protective film component has good ductility, the protection performance is further improved, meanwhile, the ventilation holes and the exhaust holes improve the ventilation performance, the auxiliary heat dissipation effect is achieved, and the safety performance of the protective film component is further improved.

Description

Protection film assembly for matte coating surface

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a protective film component for the surface of a matte coating.

Background

Lithium batteries can be broadly classified into two types: lithium metal batteries are generally rechargeable batteries using manganese dioxide as a positive electrode material, metallic lithium or an alloy metal thereof as a negative electrode material, and a nonaqueous electrolyte solution, and lithium metal batteries are also generally rechargeable batteries using graphite as a negative electrode material.

In the use of the matte coating lithium battery, when the matte coating lithium battery is impacted by the outside, the possibility of deformation exists, and even the liquid in the lithium battery can be leaked, so that explosion accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a protective film component for the surface of a matte coating, which solves the problem that in the prior art, when the protective film component is impacted by the outside, deformation is possible, and even the liquid in a lithium battery is leaked, so that explosion accidents are caused.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a protection film assembly for the surface of a matte coating comprises a back glue piece, an outer buffer layer, an inner buffer layer and an insulating layer, wherein the outer buffer layer is positioned on the outer side of the inner buffer layer;

the outer buffer layer comprises an outer pressure-resistant layer, the inner side of the outer pressure-resistant layer is bonded with an outer wrinkle layer, and two sides of the inner side of the outer pressure-resistant layer are bonded with adhesive tapes I;

the inner buffer layer comprises an inner pressure-resistant layer, an inner fold layer is bonded on the outer side of the inner pressure-resistant layer, adhesive tapes II are bonded on two sides of the outer side of the inner pressure-resistant layer, and the outer fold layer corresponds to the raised positions of the inner fold layer and is in adhesive connection with the inner fold layer;

the inner buffer layer and the outer buffer layer are respectively positioned in the concave parts of the inner wrinkle layer and the outer wrinkle layer and are provided with a plurality of air holes, adhesion layers are respectively adhered between the outer buffer layer and the insulating layer and between the inner buffer layer and the back adhesive piece, and a protective layer is adhered on the outer side of the insulating layer.

Preferably, the gum piece includes the gum layer, the inside of gum layer adopts ripple line and horizontal line to weave to form, the back of ripple line and horizontal line all scribbles the gum.

Preferably, the corrugated lines and the transverse lines are distributed in a transversely and longitudinally staggered mode.

Preferably, the plurality of air holes on the surface of the inner buffer layer correspond to the plurality of air holes on the surface of the outer buffer layer.

Preferably, the adhesion layer comprises a double-sided adhesive layer, and a plurality of vent holes are formed in the surface of the double-sided adhesive layer.

Preferably, the cross section of the exhaust hole is an inclined plane, and the exhaust hole corresponds to the positions of the plurality of air holes respectively.

Preferably, the adhesive tape II positioned on the surface of the inner buffer layer corresponds to the adhesive tape I positioned on the surface of the outer buffer layer in position and extrudes mutually, and the adhesive tape I and the adhesive tape II are both made of transparent materials.

Preferably, the protective layer is made of rubber.

The utility model has at least the following beneficial effects:

set up through protective layer and outer buffer layer under the battery receives the circumstances of external effort, outer buffer layer and interior buffer layer can produce deformation, cushion the effort, have good ductility, and then improved the protectiveness, and bleeder vent and exhaust hole have improved the gas permeability simultaneously, have played supplementary radiating effect, have further improved the security performance of this protective film subassembly.

The utility model also has the following beneficial effects:

1. the gum layer is woven by adopting the corrugated lines and the transverse lines, when the protective film is adhered to the surface of the battery, bubbles can be effectively avoided, the exhaust and heat dissipation performance is good, the safety in use is improved, and when the protective film is stripped from the battery, the corrugated lines and the transverse lines are woven to effectively avoid the phenomenon of glue residue.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic exploded perspective view of the present invention;

FIG. 2 is a perspective view of the backing member of the present invention;

FIG. 3 is a schematic exploded perspective view of a connection structure of an outer buffer layer and an inner buffer layer according to the present invention;

FIG. 4 is a schematic cross-sectional perspective view of an adhesion layer of the present invention.

In the figure: 1. a back glue piece; 11. a back glue layer; 12. a corrugated line; 13. a transverse line; 2. an outer buffer layer; 21. an outer pressure resistant layer; 22. an outer pleated layer; 23. a rubber strip I; 3. an inner buffer layer; 31. an inner pressure resistant layer; 32. an inner pleated layer; 33. a rubber strip II; 4. air holes are formed; 5. an adhesion layer; 51. a double-sided adhesive layer; 52. an exhaust hole; 6. an insulating layer; 7. and a protective layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-4, a protection film assembly for a matte coating surface comprises a back glue piece 1, an outer buffer layer 2, an inner buffer layer 3 and an insulating layer 6, and is characterized in that the outer buffer layer 2 is positioned at the outer side of the inner buffer layer 3;

the outer buffer layer 2 comprises an outer pressure-resistant layer 21, an outer wrinkle layer 22 is bonded on the inner side of the outer pressure-resistant layer 21, and adhesive tapes I23 are bonded on two sides of the inner side of the outer pressure-resistant layer 21;

the inner buffer layer 3 comprises an inner pressure-resistant layer 31, an inner fold layer 32 is bonded on the outer side of the inner pressure-resistant layer 31, adhesive tapes II 33 are bonded on two sides of the outer side of the inner pressure-resistant layer 31, and the outer fold layer 22 corresponds to the raised position of the inner fold layer 32 and is bonded;

the inner buffer layer 3 and the outer buffer layer 2 are respectively positioned in the concave parts of the inner fold layer 32 and the outer fold layer 22 and are provided with a plurality of vent holes 4, the adhesion layers 5 are respectively adhered between the outer buffer layer 2 and the insulating layer 6 and between the inner buffer layer 3 and the back rubber piece 1, and the protective layer 7 is adhered on the outer side of the insulating layer 6;

the scheme has the following working processes: set up through protective layer 7 and outer buffer layer 2 under the battery receives the circumstances of external effort, outer buffer layer 2 and interior buffer layer 3 can produce certain deformation under the effect of outer fold layer 22 and interior fold layer 32, cushion the effort, have good ductility, and then the protectiveness has been improved, the air accessible bleeder vent 4 that exists when the bonding is ventilative with exhaust hole 52, the gas permeability is improved, the effect of supplementary radiating has still been played simultaneously, insulating layer 6 can prevent the electrically conductive circumstances from appearing.

Further, gum piece 1 includes gum layer 11, and the inside of gum layer 11 adopts ripple line 12 and horizontal line 13 to weave to form, and ripple line 12 all is scribbled the gum with the back of horizontal line 13, and is concrete, can effectively avoid the production of bubble, has improved the laminating degree when bonding, when peeling off this protection film and battery simultaneously, can effectively avoid the remaining phenomenon of glue.

Further, corrugated line 12 and horizontal line 13 are horizontal vertical crisscross distribution, and is specific, and corrugated line 12 scribbles the gum with the back of horizontal line 13, and corrugated line 12's stroke is longer, can increase the area of scribbling the gum, improves the glued fastness, does not influence the exhaust function simultaneously.

Furthermore, the positions of the plurality of air holes 4 on the surface of the inner buffer layer 3 correspond to the positions of the plurality of air holes 4 on the surface of the outer buffer layer 2, so that the air can be better permeated, and the air permeability is improved.

Further, adhesion layer 5 includes double-sided adhesive layer 51, and a plurality of exhaust hole 52 has been seted up on double-sided adhesive layer 51's surface, and is concrete, and the double-sided adhesive layer 51 that is located the inboard carries out the bonding with gum layer 11 and interior buffer layer 3 and fixes, and the double-sided adhesive layer 51 that is located the outside carries out bonding with outer buffer layer 2 and insulating layer 6 and fixes, has improved the steadiness of this protection film monolithic connection.

Further, the cross section of the vent hole 52 is an inclined plane, and the vent hole 52 corresponds to the positions of the plurality of vent holes 4, specifically, the combination of the vent hole 52 and the vent holes 4 is helpful for air permeation, thereby improving air permeability.

Further, be located two 33 adhesive tape on 3 surfaces of interior buffer layer and be located the corresponding and mutual extrusion in the position of 2 surperficial adhesive tape 23 of outer buffer layer, adhesive tape 23 is transparent material with two 33 adhesive tape, and is concrete, and when outer buffer layer 2 and interior buffer layer 3 took place deformation, adhesive tape 23 also extruded each other with two 33 adhesive tape simultaneously, had played certain cushioning effect, had improved crushing resistance.

Further, the protective layer 7 is made of rubber, and specifically, the rubber has certain deformation property, so that the pressure resistance is further improved.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A protection film assembly for the surface of a matte coating comprises a back adhesive piece (1), an outer buffer layer (2), an inner buffer layer (3) and an insulating layer (6), and is characterized in that the outer buffer layer (2) is positioned on the outer side of the inner buffer layer (3);

the outer buffer layer (2) comprises an outer pressure-resistant layer (21), an outer wrinkle layer (22) is bonded on the inner side of the outer pressure-resistant layer (21), and adhesive tapes I (23) are bonded on two sides of the inner side of the outer pressure-resistant layer (21);

the inner buffer layer (3) comprises an inner pressure-resistant layer (31), an inner fold layer (32) is bonded on the outer side of the inner pressure-resistant layer (31), adhesive tapes II (33) are bonded on two sides of the outer side of the inner pressure-resistant layer (31), and the outer fold layer (22) corresponds to the protruding position of the inner fold layer (32) and is in adhesive connection with the protruding position of the inner fold layer;

the inner buffer layer (3) and the outer buffer layer (2) are respectively positioned in the concave positions of the inner fold layer (32) and the outer fold layer (22) and are provided with a plurality of air holes (4), adhesive layers (5) are respectively adhered between the outer buffer layer (2) and the insulating layer (6) and between the inner buffer layer (3) and the back rubber piece (1), and a protective layer (7) is adhered on the outer side of the insulating layer (6).

2. The protective film assembly for the matte coating surface according to claim 1, wherein the adhesive backing member (1) comprises an adhesive backing layer (11), the inside of the adhesive backing layer (11) is woven by adopting corrugated lines (12) and transverse lines (13), and the back surfaces of the corrugated lines (12) and the transverse lines (13) are coated with the adhesive backing.

3. A protective film assembly for matte coating surfaces according to claim 2, wherein said corrugated lines (12) and transverse lines (13) are staggered transversely and longitudinally.

4. A protective film assembly for matte coating surfaces according to claim 1, wherein the plurality of ventilation holes (4) on the surface of the inner buffer layer (3) correspond in position to the plurality of ventilation holes (4) on the surface of the outer buffer layer (2).

5. The protective film assembly for the matte coating surface according to claim 1, wherein the adhesive layer (5) comprises a double-sided adhesive layer (51), and a plurality of vent holes (52) are formed in the surface of the double-sided adhesive layer (51).

6. A protective film assembly for a matte coating surface according to claim 5, wherein the cross section of the vent hole (52) is a slope, and the vent holes (52) correspond to the positions of the plurality of vent holes (4), respectively.

7. The protective film assembly for the matte coating surface according to claim 1, wherein the second adhesive tape (33) on the surface of the inner buffer layer (3) corresponds to the first adhesive tape (23) on the surface of the outer buffer layer (2) in position and is extruded with each other, and the first adhesive tape (23) and the second adhesive tape (33) are both made of transparent materials.

8. A protective film assembly for matte coating surfaces according to claim 1, wherein the protective layer (7) is made of rubber.