CN209882449U

CN209882449U - Composite structure based on silica gel and phase-change material

Info

Publication number: CN209882449U
Application number: CN201920353755.8U
Authority: CN
Inventors: 胡福朝; 周廷东
Original assignee: Chongqing Feicheng Metal Product Co Ltd
Current assignee: Chongqing Feicheng Metal Product Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2019-12-31
Anticipated expiration: 2029-03-19

Abstract

The utility model belongs to the field of heat conduction materials, and discloses a composite structure based on silica gel and phase change materials, which comprises an insulating heat conduction silica gel body, a first heat conductor and a second heat conductor, wherein the first heat conductor and the second heat conductor are in insulating connection through the insulating heat conduction silica gel body; the first heat conductor and the second heat conductor are both filled with phase change heat conduction materials. The structure is used for heat dissipation of electronic components or heat transfer among the electronic components, and has the characteristics of insulation, heat conduction and no influence on the installation of electronic products.

Description

Composite structure based on silica gel and phase-change material

Technical Field

The utility model relates to a heat conduction material field specifically is a composite construction based on silica gel and phase change material.

Background

The heat-conducting silica gel is an insulating material and can be used for insulating and heat-conducting application of various electronic products; the heat conductor based on the phase-change material is a metal heat conduction material with a stable structure.

CN 201510068626.0 discloses a phase change material rod, which is designed to be composed of a first shell, a second shell, a heat conductive silica gel sheet and a phase change material. The first shell and the second shell are made of heat-conducting, insulating and flame-retardant materials. Through the specially designed structure, the space inside the two shells forms a seal after the two shells are assembled, and the closed space can be filled with the phase-change material. One surface of the heat-conducting silica gel sheet is attached to the grooves of the first shell and the second shell, and the other surface of the heat-conducting silica gel sheet is in close contact with the cylindrical surface of the battery. The design improves the structural strength of the finished product, retains the good heat conduction and heat storage performance of the phase-change material, overcomes the defects of poor insulating property, low flame retardant property and the like of the monomer phase-change material, prevents the phase-change material from leaking and is safe to use. The battery box is characterized in that the thermal management of the temperature of a single battery during operation is realized under the condition of not increasing the volume of the battery box, the volume energy density of the battery box is not reduced, and the performance of the battery is improved.

This solution only solves the problem of insulating and heat conducting between the battery and the heat conducting material.

In practical applications, customers may put forth additional requirements, such as to achieve insulation and heat conduction between a heat source of the electronic component and the heat dissipation mechanism, and to meet the requirement of the mounting accuracy of the electronic component. In other words, the thermal conductor developed by the inventor should not only ensure good thermal conductivity and safe insulation, but also cannot cause any burden and influence on the installation and operation of the electronic product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a composite construction based on silica gel and phase change material, this structure is used for electronic components's heat dissipation or the heat transfer between the electronic components, and it has insulating, heat conduction, does not have the characteristics of influence to the installation of electronic product.

In order to achieve the above object, the utility model provides a following technical scheme: a composite structure based on silica gel and phase-change materials comprises an insulating heat-conducting silica gel body, a first heat-conducting body and a second heat-conducting body, wherein the first heat-conducting body and the second heat-conducting body are in insulating connection through the insulating heat-conducting silica gel body; the first heat conductor and the second heat conductor are both filled with phase change heat conduction materials.

In the composite structure based on the silica gel and the phase change material, the first heat conductor and the second heat conductor have the same structure; the first heat conductor comprises a body, wherein a plurality of rows of closed cylindrical pipelines are arranged in the body; the phase change heat conduction material is filled in the cylindrical pipeline; the other part of the cylindrical pipeline except the phase change heat conduction material is a vacuum or negative pressure cavity.

In the composite structure based on the silica gel and the phase change material, the first heat conductor is plate-shaped or column-shaped.

In the composite structure based on the silica gel and the phase-change material, the body is made of an aluminum alloy material.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a first heat conductor and second heat conductor pass through insulating heat conduction silica gel as the intermediate junction body, it can realize thermal quick transmission, and can insulate, and simultaneously, first heat conductor and second heat conductor are hard material, insulating heat conduction silica gel is soft material, first heat conductor and second heat conductor can with the heat source, carry out stable connection between cold source or two electronic components, and insulating heat conduction silica gel strip is soft, it can tolerate the interval in the connection process, the error in the aspect of fit clearance etc. can not bring the difficult problem in the aspect of fixing to first heat conductor and second heat conductor, and if when this structure was applied to the electronic equipment of mobility on, it had better antidetonation and sealing performance.

Drawings

Fig. 1 is a plan view of embodiment 1 of the present invention;

fig. 2 is a sectional view taken along line a-a of example 1 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-2, a composite structure based on silica gel and phase change material includes an insulating heat conductive silica gel 1, a first heat conductor 2, and a second heat conductor 3, wherein the first heat conductor 2 and the second heat conductor 3 are connected in an insulating manner through the insulating heat conductive silica gel 1; the first heat conductor 2 and the second heat conductor 3 are both filled with phase change heat conduction materials 4.

This embodiment adopts first heat conductor 2 and second heat conductor 3 to pass through insulating heat conduction silica gel as intermediate connection body, it can realize thermal quick transmission, and can be insulating, simultaneously, first heat conductor 2 and second heat conductor 3 are hard material, insulating heat conduction silica gel 1 is soft material, first heat conductor 2 and second heat conductor 3 can with the heat source, carry out stable connection between cold source or two electronic components, and insulating heat conduction silica gel strip is soft, it can tolerate the interval in the connection process, the error in the aspect of fit clearance etc. can not bring the difficult problem in the aspect of fixing to first heat conductor 2 and second heat conductor 3, and if this structure is applied to the electronic equipment of mobility on, it has better antidetonation and sealing performance. The connection between the first heat conductor 2 and the second heat conductor 3 and the insulating and heat-conducting silicone gel 1 can be bonded by a heat-resistant adhesive, and the end parts of the first heat conductor 2 and the second heat conductor 3 can be wrapped by elastic force of the insulating and heat-conducting silicone gel 1, or the connection can be realized by a buckle of an external device, so that the embodiment is not limited.

As an application method, the structure can be used for heat control of a lithium battery box, as is well known, the lithium battery box is used as a widely used vehicle power battery, the requirement of the lithium battery box is very strict in waterproofness, and heat generated by the battery can be rapidly dissipated, the structure can be skillfully combined with the application scene, the first heat conductor 2 can be designed into a wave shape adaptive to the surface shape of the battery, the second heat conductor 3 can be designed into a plate shape or a plate structure with a plurality of heat dissipation fins, the insulating heat conduction silicon colloid 1 can be fixed on a shell of the lithium battery box and can be hermetically connected with the lithium battery box, elastic change can be carried out during vibration, and remarkable influence on the first heat conductor 2 and the second heat conductor 3 cannot be caused. Through the design of this structure, can effectively improve lithium cell case's heat conductivity, leakproofness, insulating nature, use reliability etc..

As another application scenario of this embodiment, for a commercial processor, the heat generation amount is huge, and we design the first heat conductor 2 as a plate to be connected with the processor, and design the second heat conductor 3 as an external heat dissipation mechanism with heat dissipation fins, and connect through the insulating heat conductive silicone body 1, so that it is possible to avoid the influence of external vibration and other factors on the precise processor, and meanwhile, the processor has excellent waterproof and insulating properties.

In this embodiment, the first heat conductor 2 and the second heat conductor 3 have the same structure, and in practical application, the structures of the first heat conductor 2 and the second heat conductor 3 may be designed to be different according to the actual heat conduction speed requirement; the first heat conductor 2 comprises a body 21, wherein a plurality of rows of closed cylindrical pipelines 22 are arranged in the body 21; the phase change heat conduction material 4 is filled in the cylindrical pipeline 22; the other part of the cylindrical pipe 22 except the phase change heat conductive material 4 is a vacuum or negative pressure cavity.

The cylindrical pipe 22 is arranged on the first heat conductor 2 as a hard heat conductor, and is expected to generate heat exchange as fast as possible with a small enough volume of the heat conductor.

Of course, the scheme does not exclude the square column or any other irregular pipeline structure.

Preferably, the first heat conductor 2 is plate-shaped or column-shaped, and the body 21 is made of aluminum alloy material 21. In practical application, other metal materials such as stainless steel, copper and the like are not excluded, but the aluminum alloy material is good in heat conductivity coefficient, good in hardness and light in weight.

In this embodiment, the phase change heat conductive material is a material that liquefies at a low temperature and vaporizes at a high temperature, which is common in the art, and is not limited to this, as described in cn201320265315.x, CN201620736977.4, and CN 201320362113.7.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a composite construction based on silica gel and phase change material, includes insulating heat conduction colloidal silica, first heat conductor, its characterized in that: the first heat conductor and the second heat conductor are in insulated connection through an insulated heat-conducting silica gel body; the first heat conductor and the second heat conductor are both filled with phase change heat conduction materials.

2. The composite structure based on silica gel and phase change material as claimed in claim 1, wherein the first and second thermal conductors are identical in structure; the first heat conductor comprises a body, wherein a plurality of rows of closed cylindrical pipelines are arranged in the body; the phase change heat conduction material is filled in the cylindrical pipeline; the other part of the cylindrical pipeline except the phase change heat conduction material is a vacuum or negative pressure cavity.

3. The composite structure of claim 2, wherein the first thermal conductor is plate-shaped or column-shaped.

4. The composite structure based on silica gel and phase change material as claimed in claim 2, wherein the body is made of aluminum alloy.