CN220652267U - Heat insulation film and electronic product - Google Patents

Abstract

The application relates to a thermal-insulated membrane and electronic product, thermal-insulated membrane includes membrane body, hydrogel and enhancement frame, this internal accommodation space that is formed with of membrane, the hydrogel is located in the accommodation space, the enhancement frame is located on the membrane body surface, and be located around the hydrogel. The application provides a thermal-insulated membrane, after the hydrogel is poured into accommodation space, because accommodation space is inside to be not establish reinforcing frame, so the in-process bubble of hydrogel water injection can discharge smoothly, improves product quality, then after the hot melt encapsulation, sets up reinforcing frame on the membrane body surface again to enclose around the hydrogel, thereby improve the structural strength of whole product. In addition, set up reinforcing frame on the membrane body surface, put in easily, can reduce the preparation degree of difficulty, reduce the warpage probability.

Description

Heat insulation film and electronic product

Technical Field

The application relates to the technical field of energy storage and heat dissipation, in particular to a heat insulation film and an electronic product.

Background

With the rising and development of the energy industry, the fields of batteries, charging piles and the like are rapidly developed, and the heat dissipation requirement for the energy storage field is also rapidly increased.

For example, an electric automobile mainly uses a lithium ion battery as a power battery, and battery thermal runaway is a primary safety problem of the electric automobile under extreme conditions, and the problem that the temperature is too high due to overcharge of the battery is common and serious, so that the electric automobile catches fire and explodes.

Because hydrogel strength is poor and pressure is not resisted, the existing hydrogel heat insulation material is formed by adding structural members such as frames between two packaging films so as to enhance mechanical properties.

However, when the frame is arranged in the membrane bag, the bubbles in the hydrogel are difficult to be discharged out of the membrane bag due to the interference of the frame during water injection packaging, so that the quality of a product is affected, and if vacuum degassing is used, the water loss of the gel is easily caused.

In addition, the hydrogel is a large whole block, so that the frame to be used is large and long in size, and the frame is easy to warp and difficult to put in when being put into a film bag in the packaging process.

Disclosure of Invention

The embodiment of the application provides a thermal-insulated membrane and electronic product, because the reinforcing frame is not established to accommodating space inside, so after the hydrogel is poured into accommodating space into, the in-process bubble of hydrogel water injection can discharge smoothly, improves product quality, then after the hot melt encapsulation, set up reinforcing frame again on the membrane body surface to enclose around the hydrogel, thereby improve the structural strength of whole product.

In a first aspect, there is provided a thermal insulation film comprising:

a film body in which an accommodation space is formed;

the hydrogel is positioned in the accommodating space;

the reinforcing frame is arranged on the outer surface of the membrane body and positioned around the hydrogel.

In some embodiments, the reinforcing frame is plastic, rubber, or cured glue.

In some embodiments, the film body employs an encapsulating film pouch.

In some embodiments, the film body includes a base film and a packaging upper film, the packaging upper film is disposed on the base film, and the accommodating space is formed between the packaging upper film and the base film.

In some embodiments, the packaging upper film is provided with a protruding portion protruding from the packaging upper film in a direction away from the bottom film, and the accommodating space is formed between the protruding portion and the bottom film.

In some embodiments, the plurality of accommodating spaces are distributed in a matrix, and adjacent reinforcing frames are connected to form a whole frame.

In some embodiments, the hydrogel materials in any two of the accommodating spaces are the same or different.

In some embodiments, the hydrogel is made of polyacrylamide hydrogel, polyacrylic hydrogel, sodium alginate hydrogel or chitosan hydrogel with water content of more than 60%.

In some embodiments, the reinforcement frame has a relief space between the reinforcement frame and the hydrogel edge located therein.

In a second aspect, there is provided an electronic product comprising a thermal insulating film as described in any one of the above.

The beneficial effects that technical scheme that this application provided brought include:

the embodiment of the application provides a thermal-insulated membrane and electronic product, the thermal-insulated membrane that this application provided, after the hydrogel is poured into accommodation space into, because accommodation space is inside to be not establish reinforcing frame, so the in-process bubble of hydrogel water injection can discharge smoothly, improves product quality, then after the hot melt encapsulation, sets up reinforcing frame on the membrane body surface again to enclose around the hydrogel, thereby improve the structural strength of whole product.

In addition, set up reinforcing frame on the membrane body surface, put in easily, can reduce the preparation degree of difficulty, reduce the warpage probability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a membrane body and hydrogel provided in an embodiment of the present application;

FIG. 2 is a schematic view of a thermal insulation film according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of a thermal barrier film provided in an embodiment of the present application;

fig. 4 is a schematic view of a heat insulation film according to an embodiment of the present application in use.

In the figure: 1. a film body; 10. an accommodating space; 11. a base film; 12. packaging and coating a film; 13. a boss; 2. a hydrogel; 3. a reinforcing frame; 4. an avoidance space; 5. a cylindrical battery.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

Referring to fig. 1 and 2, an embodiment of the present application provides a heat insulation film, which includes a film body 1, a hydrogel 2 and a reinforcing frame 3, wherein an accommodating space 10 is formed in the film body 1, the hydrogel 2 is located in the accommodating space 10, and the reinforcing frame 3 is disposed on an outer surface of the film body 1 and is located around the hydrogel 2.

The application provides a thermal-insulated membrane, after hydrogel 2 pours into accommodation space 10 into, because accommodation space 10 is inside does not establish braced frame 3, so the in-process bubble of hydrogel water injection can discharge smoothly, improves product quality, then after the hot melt encapsulation, set up braced frame 3 again on membrane body 1 surface to enclose around hydrogel 2, thereby improve the structural strength of whole product.

In addition, set up reinforcing frame 3 on the surface of membrane body 1, put in easily, can reduce the preparation degree of difficulty, reduce the warpage probability.

The reinforcement frame 3 mainly plays a role of reinforcing structural strength, and various options are available in terms of material selection, such as, for example, plastic or rubber is adopted for the reinforcement frame 3, and for example, glue may be dispensed on the outer surface of the film body 1, and the reinforcement frame 3 is formed after the glue is solidified.

The material of the hydrogel 2 may be selected from various materials, for example, polyacrylamide hydrogel, polyacrylic hydrogel, sodium alginate hydrogel or chitosan hydrogel is used as the material of the hydrogel 2. Further, the water content of these materials exceeds 60%.

The film body 1 provided in the embodiment of the present application also has various options.

For example, referring to fig. 1, the film body 1 employs a packaging film bag.

For the case of adopting packaging film bags, in the production process, the hydrogel 2 can be in a filling mode, the packaging film bags are firstly hot-melted into bag-shaped cavities with openings through a glue filling machine, or the bags are used, the glue filling machine is used for filling the hydrogel into the accommodating space 10 through one or more flow channels and then flows to the next hot-melting position, and the product is hot-melted and packaged. And then flows to the next station, and a reinforcing frame 3 is added outside the product by using dispensing or frame attaching equipment. A roller may be used to form the product into a roll for storage. When in use, the utility model is cut for a certain length.

For another example, referring to fig. 3, the film body 1 includes a base film 11 and an upper package film 12, the upper package film 12 is disposed on the base film 11, and a receiving space 10 is formed between the upper package film 12 and the base film 11.

For the condition of adopting the bottom film 11 and the packaging upper film 12, in the production process, the hydrogel 2 can be coated in a coating mode, the hydrogel is uniformly coated in different areas of the bottom film 11, the packaging upper film 12 is covered by a film coating process, then the edge is sealed by hot melting, and finally the reinforcing frame 3 is added outside the product by using dispensing or frame pasting equipment. A roller may be used to form the product into a roll for storage. When in use, the utility model is cut for a certain length.

In use, the base film 11 is generally far from the heating element and is an exterior surface, so in order to improve visual effect and facilitate manufacture, as shown in fig. 3 and 4, the packaging upper film 12 is provided with a protruding portion 13 protruding from the packaging upper film 12 in a direction away from the base film 11, and a receiving space 10 is formed between the protruding portion 13 and the base film 11.

Referring to fig. 3 and 4, in some preferred embodiments, the plurality of receiving spaces 10 are arranged in a matrix arrangement, and adjacent reinforcing frames 3 are connected to form a unitary frame.

Through dividing the whole area of the heat insulation film into a plurality of different small areas, a plurality of accommodating spaces 10 which are distributed and arranged in a matrix form are formed, and hydrogel 2 can be placed in each accommodating space 10, so that the management and control difficulty of the whole size manufacturing tolerance of the heat insulation film can be reduced, and the whole bearing effect is improved. And when a problem occurs in one region of the heating element, the hydrogel 2 of the heat-insulating film corresponding to the region can be heat-insulated or cooled against the region, and even if the hydrogel 2 fails, the entire heat-insulating film can be prevented from being failed.

In addition, the hydrogel 2 can be placed in each accommodating space 10 because the accommodating spaces 10 are divided into independent different accommodating spaces 10, so that the hydrogels with different specifications or materials can be used for packaging in the different accommodating spaces 10, and the heat insulation and heat conduction and mechanical properties of the heat insulation film are optimized.

Because the heat-generating body is that the battery is some is the blade battery, is some cylindrical battery 5 as shown in fig. 4, in order to make the application provide the thermal-insulated membrane also can be applicable to cylindrical heat-generating body, see the fig. 4 and show, have between the hydrogel 2 edge that strengthens frame 3 and is located in it and dodge space 4, set up the purpose of dodging space 4, when the thermal-insulated membrane curls, the hydrogel 2 can appear expanding, dodge space 4 has reserved the space for the expansion of hydrogel 2, avoid hydrogel 2 to extrude strengthening frame 3.

The spacing between the reinforcing frame 3 and the edge of the hydrogel 2 located therein may be determined according to practical needs, for example, the spacing may be designed to be 0.1 to 10mm, as an example.

The cross-sectional shape of the reinforcing frame 3 may be determined according to actual needs, for example, as can be seen from fig. 4, the cross-sectional shape of the reinforcing frame 3 is substantially trapezoidal, and the lower base is provided on the package upper film 12.

Further, the upper base of the trapezoid may be designed to be arc-shaped in order to match the cylindrical heating element.

The embodiment of the application also provides an electronic product, which comprises the heat insulation film.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A thermal barrier film, comprising:

a film body (1), wherein an accommodating space (10) is formed in the film body (1);

a hydrogel (2), wherein the hydrogel (2) is positioned in the accommodating space (10);

the reinforcing frame (3) is arranged on the outer surface of the membrane body (1) and is positioned around the hydrogel (2).

2. The insulating film of claim 1, wherein:

the reinforcing frame (3) is made of plastic, rubber or solidified glue.

3. The insulating film of claim 1, wherein:

the film body (1) adopts a packaging film bag.

4. The insulating film of claim 1, wherein:

the film body (1) comprises a bottom film (11) and an encapsulation upper film (12), wherein the encapsulation upper film (12) is arranged on the bottom film (11), and an accommodating space (10) is formed between the encapsulation upper film (12) and the bottom film (11).

5. The insulating film of claim 4, wherein:

the packaging upper film (12) is provided with a protruding part (13) formed by protruding the packaging upper film (12) towards a direction far away from the bottom film (11), and the accommodating space (10) is formed between the protruding part (13) and the bottom film (11).

6. The insulating film of claim 1, wherein:

the plurality of accommodating spaces (10) are distributed in a matrix, and adjacent reinforcing frames (3) are connected to form an integral frame.

7. The insulating film of claim 6, wherein:

the materials of the hydrogels (2) in any two accommodating spaces (10) are the same or different.

8. The insulating film of claim 1, wherein: an avoidance space (4) is arranged between the reinforcement frame (3) and the edge of the hydrogel (2) positioned in the reinforcement frame.

9. An electronic product, characterized in that: comprising the heat insulating film according to any one of claims 1 to 8.