CN217691367U

CN217691367U - Battery insulating film

Info

Publication number: CN217691367U
Application number: CN202123287394.8U
Authority: CN
Inventors: 张俊瑜
Original assignee: Shenzhen Runfeng New Energy Co ltd
Current assignee: Shenzhen Runfeng New Energy Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-10-28
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a battery insulating film, which belongs to the technical field of insulating films and comprises an outer layer, an insulating layer and an inner layer; the inner layer comprises a heat absorption layer, a flame retardant layer and a heat conduction layer, and the flame retardant layer is arranged between the heat absorption layer and the heat conduction layer; the bottom of heat-absorbing layer evenly is provided with a plurality of arch, and the inside of heat-absorbing layer evenly is provided with a plurality of through-hole, the heat-absorbing layer adopts is temperature sensitive material, fire-retardant layer is fire-retardant polyester film, the heat-conducting layer is heat conduction silica gel layer, the skin includes wearing layer and anti-corrosion coating, the insulating layer includes PET layer, glass fiber layer and insulating cement, the insulating cement includes the skin on PET layer and glass fiber layer. The utility model discloses a cooperation between heat-sink shell, fire-retardant layer and the heat-conducting layer can improve the heat conductivity to this battery insulation film greatly, improves the thermal diffusivity to the battery greatly.

Description

Battery insulating film

Technical Field

The utility model belongs to the technical field of the insulating film, specifically, relate to a battery insulating film.

Background

The insulating film is a thin film capable of ensuring good electrical insulation. Such films should have very high resistivity and breakdown field strength, while the electronic structure is characterized by a large forbidden bandwidth. For use in high frequency insulation, materials are also required to have low dielectric losses.

The existing insulating film for the battery has the following defects: the security is than lower, and thermal-insulated effect is poor, and life is not long, for this reason the utility model provides a battery insulating film.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery insulating film has solved the problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical scheme:

a battery insulating film includes an outer layer, an insulating layer, and an inner layer;

the inner layer comprises a heat absorption layer, a flame retardant layer and a heat conduction layer, and the flame retardant layer is arranged between the heat absorption layer and the heat conduction layer;

the bottom of the heat absorbing layer is evenly provided with a plurality of bulges, and the inside of the heat absorbing layer is evenly provided with a plurality of through holes.

Preferably, the heat absorbing layer is made of a thermosensitive material.

Preferably, the flame-retardant layer is a flame-retardant polyester film.

Preferably, the heat conducting layer is a heat conducting silica gel layer.

Preferably, the outer layer comprises a wear layer and a corrosion resistant layer.

Preferably, the insulating layer comprises a PET layer, a glass fiber layer and an insulating glue, and the insulating glue is included in the outer layers of the PET layer and the glass fiber layer.

The utility model has the advantages that: the utility model discloses a cooperation between heat-sink shell, fire-retardant layer and the heat-conducting layer can improve the heat conductivity to this battery insulation film greatly, improves the thermal diffusivity to the battery greatly.

Drawings

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

Fig. 1 is a schematic structural diagram of the battery insulating film of the present invention.

Fig. 2 is a schematic structural diagram of the outer layer of the present invention.

Fig. 3 is a schematic structural diagram of the middle insulating layer of the present invention.

Fig. 4 is a schematic structural view of the middle layer of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an outer layer; 2. an insulating layer; 3. an inner layer; 4. a heat absorbing layer; 5. a flame retardant layer; 6. a heat conductive layer; 7. a protrusion; 8. a through hole; 9. a wear layer; 10. an anti-corrosion layer; 11. a PET layer; 12. a glass fiber layer; 13. and (4) insulating glue.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention relates to a battery insulation film, which comprises an outer layer 1, an insulation layer 2 and an inner layer 3; the inner layer 3 comprises a heat-absorbing layer 4, a flame-retardant layer 5 and a heat-conducting layer 6, and the flame-retardant layer 5 is arranged between the heat-absorbing layer 4 and the heat-conducting layer 6; the bottom of the heat absorbing layer 4 is evenly provided with a plurality of bulges 7, and the inside of the heat absorbing layer 4 is evenly provided with a plurality of through holes 8.

Can improve the heat-conducting ability of group battery through heat-conducting layer 6 in this embodiment, derive the heat on the group battery on heat-sink shell 4 fast, heat-sink shell 4 can carry out quick absorption to the heat of deriving, the arch 7 of setting can increase to the area of contact with heat-conducting layer 6 to accelerate the thermal absorption to heat-conducting layer 6.

The heat absorbing layer 4 is made of heat sensitive material. The flame-retardant layer 5 is a flame-retardant polyester film. The heat conduction layer 6 is a heat conduction silica gel layer. The outer layer 1 comprises a wear layer 9 and a corrosion resistant layer 10.

In this embodiment, the heat absorbing layer 4 is made of a thermosensitive material, the thermosensitive material has a good heat absorbing function, the flame-retardant polyester film has high flame retardancy and high thermal stability, the heat-conducting silica gel is a high-end heat-conducting compound, the heat-conducting silica gel has high heat conductivity, excellent heat conductivity, good electroconductivity, a wide use temperature, good use stability, low consistency and good construction performance.

The insulating layer 2 comprises a PET layer 11, a glass fiber layer 12 and an insulating glue 13, wherein the insulating glue 13 is included on the outer layers of the PET layer 11 and the glass fiber layer 12.

The PET layer 11 in this example is a relatively full-blown packaging film. The transparency is good and the luster is good; the air tightness and the fragrance retention are good; moderate moisture resistance and reduced moisture permeability at low temperatures. The PET film has excellent mechanical performance, the toughness is the best of all thermoplastic plastics, and the tensile strength and the impact strength are much higher than those of the common films; the product has good stiffness and stable size, and is suitable for secondary processing of printing, paper bags and the like; the glass fiber layer 12 is an inorganic non-metallic material with excellent performance, and has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength;

the insulating glue 13 is a multi-component compound glue with good electrical insulating properties. Asphalt, natural resin or synthetic resin is used as a main material, has high viscosity at normal temperature, and is used for connecting the outer layer 1 and the inner layer 3.

In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the principles of the present invention, and various modifications, additions and substitutions as may be made to the specific embodiments described herein by those skilled in the art are intended without departing from the spirit and scope of the invention as defined in the accompanying claims.

Claims

1. A battery insulating film characterized in that: comprises an outer layer (1), an insulating layer (2) and an inner layer (3);

the inner layer (3) comprises a heat absorption layer (4), a flame retardant layer (5) and a heat conduction layer (6), and the flame retardant layer (5) is arranged between the heat absorption layer (4) and the heat conduction layer (6);

the bottom of the heat absorption layer (4) is uniformly provided with a plurality of bulges (7), and the inside of the heat absorption layer (4) is uniformly provided with a plurality of through holes (8).

2. The battery insulating film according to claim 1, wherein: the heat absorption layer (4) is made of thermosensitive materials.

3. The battery insulating film according to claim 1, wherein: the flame-retardant layer (5) is a flame-retardant polyester film.

4. The battery insulating film according to claim 1, wherein: the heat conducting layer (6) is a heat conducting silica gel layer.

5. The battery insulating film according to claim 1, wherein: the outer layer (1) comprises a wear layer (9) and an anti-corrosion layer (10).

6. The battery insulating film according to claim 1, wherein: the insulating layer (2) comprises a PET layer (11), a glass fiber layer (12) and insulating glue (13), wherein the insulating glue (13) comprises outer layers of the PET layer (11) and the glass fiber layer (12).