CN210900117U - High-voltage insulation heat-conducting silica gel sheet - Google Patents

Abstract

The utility model discloses a high-voltage insulation heat-conducting silica gel sheet, which relates to the technical field of heat-conducting silica gel, and particularly relates to a high-voltage insulation heat-conducting silica gel sheet, which comprises a silica gel sheet body, wherein a radiating fin is arranged above the silica gel sheet body, fixed frame plates are arranged around the silica gel sheet body and the radiating fin, the upper end of the silica gel sheet body is provided with micro springs which are uniformly distributed, the top ends of the micro springs are fixedly connected with the radiating fin, the tail ends of the micro springs are fixedly connected with a supporting sheet, the supporting sheet is fixedly wrapped inside the silica gel sheet body, and the upper end of a; the utility model has the advantages that the arranged micro spring, the supporting sheet, the micro groove and the micro lug are mutually matched, so that the interface contact thermal resistance is greatly reduced, and the heat conduction and heat dissipation performance of the silicon sheet body is improved; the lower high-voltage insulating layer and the upper high-voltage insulating layer which are arranged are matched with each other, so that the double-insulation guarantee is provided, the high-voltage insulating property of the heat-conducting silica gel sheet is improved, and the practical performance of the heat-conducting silica gel sheet is greatly improved.

Description

High-voltage insulation heat-conducting silica gel sheet

Technical Field

The utility model relates to a heat conduction silica gel technical field specifically is a high voltage insulation heat conduction silica gel piece.

Background

With the multi-functionalization and miniaturization of various electronic and electric products, the negative effects caused by the heat dissipation problem are increasingly serious, and as the internal temperature is increased, a series of problems such as the service life of an electronic element is reduced, the processing speed of a chip is reduced, the idle power is increased, and the like are caused, the heat dissipation design becomes an important component of the modern electronic and electric industry, and the use of a heat sink to lead out heat is one of the most common heat dissipation designs, but because an unavoidable gap exists between the heat sink and a heat source, the heat dissipation effect is greatly reduced. In order to ensure that the electronic components can still keep a normal working state at the temperature of the use environment, a layer of heat-conducting insulating film is usually arranged on a heat exchange interface of the related components to be used as a heat-conducting interface material, so that the heat of a heating element is rapidly transferred to heat dissipation equipment, and the normal operation of the electronic equipment is ensured. But the following disadvantages still exist in the practical use process:

1. the existing heat-conducting silica gel sheet can not be tightly attached to the surfaces of different materials, the interface contact thermal resistance is large, and aiming at the application environment with large width difference at different positions, the gap of a heating element can not be fully filled due to the limited compressibility of the heat-conducting silica gel sheet, so the contact area is small;

2. the existing heat-conducting silica gel sheet has poor high-voltage insulation performance, so that the practicability is poor, and the heat-conducting silica gel sheet cannot be widely used in the field of electrical equipment.

Therefore, we propose a high voltage insulating and heat conducting silica gel sheet to solve the above drawbacks well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high voltage insulation heat conduction silica gel piece to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-voltage insulation heat-conducting silica gel sheet comprises a silica gel sheet body, wherein heat radiating fins are arranged above the silica gel sheet body, fixed frame plates are arranged on the periphery of the silica gel sheet body and the heat radiating fins, micro springs are uniformly distributed at the upper end of the silica gel sheet body, the top ends of the micro springs are fixedly connected with the heat radiating fins, the tail ends of the micro springs are fixedly connected with a supporting sheet, the supporting sheet is fixedly wrapped inside the silica gel sheet body, the silica gel sheet body comprises an upper heat-conducting silica gel layer, a lower high-voltage insulating layer, a graphite layer, an epoxy resin layer, an upper high-voltage insulating layer and a glass fiber layer, the upper end of the lower heat-conducting silica gel layer is provided with an upper heat-conducting silica gel layer, the upper end of the upper heat-conducting silica gel layer is provided with a lower high-voltage insulating, the upper end of the epoxy resin layer is provided with an upper high-voltage insulating layer, and the upper end of the upper high-voltage insulating layer is provided with a glass fiber layer.

Preferably, heat conduction silica gel layer and last heat conduction silica gel layer integrated into one piece down, just heat conduction silica gel layer and last heat conduction silica gel in situ portion are provided with the copper screen layer down.

Preferably, the lower surface of the lower heat conduction silica gel layer is provided with micro grooves which are uniformly distributed, the lower surface of the lower heat conduction silica gel layer is also provided with micro bumps which are uniformly distributed, and the micro grooves and the micro bumps are distributed in a mutually crossed manner.

Preferably, the support sheets are aluminum alloy sheets, and are all located inside the upper surface glass fiber layer of the upper high-voltage insulating layer.

Preferably, the radiating fin is an aluminum alloy plate, a heat insulation layer is arranged around the radiating fin, and radiating holes are uniformly distributed in the radiating fin.

Preferably, the fixed frame plate is a heat-conducting silica gel strip, the head end and the tail end of the heat-conducting silica gel strip are connected through gluing, and the shape of the fixed frame plate is consistent with the shapes of the radiating fin, the heat insulation layer and the silica gel sheet body.

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

1. the utility model applies pressure to the silicon sheet body by mutually matching the arranged micro spring, the supporting sheet, the micro groove and the micro lug, so that the silicon sheet body can be tightly attached to the surfaces of different materials, thereby greatly reducing the interface thermal contact resistance; the micro grooves and the micro bumps can be used for different application environments, gaps or protrusions can be fully wrapped and filled, and heat conduction and heat dissipation performance of the silicon sheet body is improved.

2. The utility model discloses a lower high-voltage insulation layer that sets up and high-voltage insulation layer mutually support have dual insulation guarantee, have improved the high-voltage insulating properties of this heat conduction silica gel piece for this heat conduction silica gel piece can be used for the high-voltage apparatus field safely extensively, has promoted its practicality greatly.

Drawings

FIG. 1 is a schematic view of the appearance structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic view of the structure of the silica gel sheet body of the present invention.

In the figure: 1. a silicon sheet body; 2. fixing the frame plate; 3. a heat sink; 4. a micro-spring; 5. a support sheet; 6. a lower heat-conducting silica gel layer; 7. a copper mesh layer; 8. a heat conducting silica gel layer is arranged; 9. a lower high voltage insulating layer; 10. an epoxy resin layer; 11. an upper high voltage insulating layer; 12. a glass fiber layer; 13. a micro bump; 14. a micro groove; 15. and a graphite layer.

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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a high-voltage insulation heat-conducting silica gel sheet comprises a silica gel sheet body 1, wherein a heat radiating fin 3 is arranged above the silica gel sheet body 1, a fixed frame plate 2 is arranged on the peripheries of the silica gel sheet body 1 and the heat radiating fin 3, the heat radiating fin 3 is an aluminum alloy plate, a heat insulating layer is arranged on the periphery of the heat radiating fin 3, heat radiating holes are uniformly distributed on the heat radiating fin 3, the effective heat radiating contact area of the heat radiating fin 3 is ensured, the outer layer of the heat radiating fin 3 is prevented from transmitting heat back to other parts of equipment needing heat radiation, the fixed frame plate 2 is a heat-conducting silica gel strip, the head end and the tail end of the heat-conducting silica gel strip are connected through gluing, the fixed frame plate 2 can be enclosed into any shape, the shape of the fixed frame plate 2 is consistent with the heat insulating layer of the heat radiating fin 3 and the shape of the silica gel sheet body 1, the terminal fixedly connected with backing sheet 5 of miniature spring 4, and backing sheet 5 fixed parcel is inside silicon sheet body 1, and backing sheet 5 is the aluminum alloy piece, and backing sheet 5 all is located the inside of the upper surface glass fiber layer 12 of high-pressure insulating layer 11 in silicon sheet body 1, and when installing heating element, miniature spring 4 can exert pressure to silicon sheet body 1 for the inseparable laminating of silicon sheet body 1 is on heating element surface.

Referring to fig. 3, a silicone sheet body 1 includes an upper heat conductive silicone layer 8, a lower heat conductive silicone layer 6, a lower high voltage insulating layer 9, a graphite layer 15, an epoxy layer 10, an upper high voltage insulating layer 11, and a glass fiber layer 12, an upper heat conductive silicone layer 8 is disposed at an upper end of the lower heat conductive silicone layer 6, the lower heat conductive silicone layer 6 and the upper heat conductive silicone layer 8 are integrally formed, a copper mesh layer 7 is disposed inside the lower heat conductive silicone layer 6 and the upper heat conductive silicone layer 8 to sufficiently and effectively dissipate heat of the lower heat and facilitate cooling, micro grooves 14 are uniformly distributed on a lower surface of the lower heat conductive silicone layer 6, micro bumps 13 are uniformly distributed on a lower surface of the lower heat conductive silicone layer 6, the micro grooves 14 and the micro bumps 13 are distributed in a crossing manner to adapt to different gaps and protrusions on a heating element and increase a contact area, the lower high voltage insulating layer 9 is disposed at an upper end of the upper heat, the upper end of lower high-voltage insulation layer 9 is provided with graphite layer 15, and graphite is lamination column structure, and graphite layer 15 increases heat transfer area, and the heat is even fast, and graphite layer 15's upper end is provided with epoxy layer 10, and epoxy layer 10 is as the protection, and epoxy layer 10's upper end is provided with high-voltage insulation layer 11, and is provided with glass fiber layer 12 on the upper end of high-voltage insulation layer 11, and glass fiber layer 12 mechanical strength is high, is difficult for gluing even.

The working principle is as follows: when the silicon sheet heating element is used, the fixed frame plate 2 is sleeved on the heating element to be fixed, the micro spring 4 extrudes the support sheet 5 and the surface of the heating element of the silicon sheet body 1, and the silicon sheet body 1 is pressed by the mutual matching of the arranged micro spring 4, the support sheet 5, the micro groove 14 and the micro bump 13, so that the silicon sheet body 1 can be tightly attached to the surface of the heating element, and the interface contact thermal resistance of the heating element is greatly reduced; the micro grooves 14 and the micro bumps 13 can be used for different application environments, and gaps or protrusions can be fully wrapped and filled to improve the heat conduction and heat dissipation performance of the silicon sheet body 1. Through the lower high-voltage insulation layer 9 and the upper high-voltage insulation layer 11 that set up mutually support, have the dual insulation guarantee, improved the high-voltage insulation performance of this heat conduction silica gel piece for this heat conduction silica gel piece can be used for high-voltage electrical equipment field safely extensively, has promoted its practicality greatly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high voltage insulation heat conduction silica gel piece, includes silica gel piece body (1), its characterized in that: the silicon sheet comprises a silicon sheet body (1), wherein cooling fins (3) are arranged above the silicon sheet body (1), fixed frame plates (2) are arranged on the peripheries of the silicon sheet body (1) and the cooling fins (3), micro springs (4) which are uniformly distributed are arranged at the upper end of the silicon sheet body (1), the top ends of the micro springs (4) are fixedly connected with the cooling fins (3), the tail ends of the micro springs (4) are fixedly connected with supporting sheets (5), the supporting sheets (5) are fixedly wrapped inside the silicon sheet body (1), the silicon sheet body (1) comprises an upper heat-conducting silicon layer (8), a lower heat-conducting silicon layer (6), a lower high-pressure insulating layer (9), a graphite layer (15), an epoxy resin layer (10), an upper heat-conducting silicon layer (11) and a glass fiber layer (12), and the upper end of the lower heat-conducting silicon layer (6) is provided with an, and the upper end of going up heat conduction silica gel layer (8) is provided with down high-pressure insulation layer (9), the upper end of low-pressure insulation layer (9) is provided with graphite layer (15), just the upper end of graphite layer (15) is provided with epoxy layer (10), the upper end of epoxy layer (10) is provided with high-pressure insulation layer (11), just the upper end of high-pressure insulation layer (11) is provided with glass fiber layer (12).

2. The high-voltage insulating and heat-conducting silica gel sheet according to claim 1, wherein: the lower heat conduction silica gel layer (6) and the upper heat conduction silica gel layer (8) are integrally formed, and the copper net layer (7) is arranged inside the lower heat conduction silica gel layer (6) and the upper heat conduction silica gel layer (8).

3. The high-voltage insulating and heat-conducting silica gel sheet according to claim 1, wherein: the lower surface of lower heat conduction silica gel layer (6) is provided with evenly distributed's miniature recess (14), just the lower surface of lower heat conduction silica gel layer (6) still is provided with evenly distributed's miniature lug (13), miniature recess (14) and miniature lug (13) intercrossing distributes.

4. The high-voltage insulating and heat-conducting silica gel sheet according to claim 1, wherein: the supporting sheets (5) are aluminum alloy sheets, and the supporting sheets (5) are located inside the glass fiber layer (12) on the upper surface of the upper high-voltage insulating layer (11).

5. The high-voltage insulating and heat-conducting silica gel sheet according to claim 1, wherein: the radiating fin (3) is an aluminum alloy plate, a heat insulating layer is arranged around the radiating fin (3), and radiating holes are uniformly distributed on the radiating fin (3).

6. The high-voltage insulating and heat-conducting silica gel sheet according to claim 5, wherein: the fixed frame plate (2) is a heat-conducting silica gel strip, the head end and the tail end of the heat-conducting silica gel strip are connected through gluing, and the shape of the fixed frame plate (2) is consistent with the shape of the radiating fin (3) with the heat insulation layer and the silica gel sheet body (1).

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