Heat-conducting gasket with high electrical insulating property

Abstract

The utility model discloses a heat-conducting gasket with high electrical insulating property, which belongs to the field of heat-conducting gaskets and is characterized in that a plurality of transverse through holes are formed in the side wall of an insulating layer, a plurality of vertical holes are formed in the lower end of the insulating layer, and a heat-conducting layer is arranged in the transverse through holes and the vertical holes; the heat conduction layer comprises heat conduction pipes and heat conduction vertical pipelines, the first heat conduction pipe, the second heat conduction pipe and the third heat conduction pipe are stacked in parallel, heat conduction circulation channels are formed in the first heat conduction pipe, the second heat conduction pipe and the third heat conduction pipe, and the multiple heat conduction vertical pipelines are arranged on the side walls of the first heat conduction pipe, the second heat conduction pipe and the third heat conduction pipe. The cable has excellent electrical insulating property, and ensures safe operation of equipment at high temperature and high pressure. Heat is efficiently dissipated, heat is quickly conducted to the heat dissipation area, and the heat dissipation efficiency is improved. The structure is compact, the integrated design and the compact assembly ensure that the gasket has good heat conduction and insulation performance in a limited space. And the flat heat conduction channels and the equidistant heat conduction pipelines ensure that the heat is uniformly transferred.

Description

Technical Field

[0001] This utility model relates to the field of thermally conductive pads, and in particular to a thermally conductive pad with high electrical insulation. Background Technology

[0002] Thermal pads are materials used to fill the air gap between heat-generating components and heat sinks or metal bases. They are widely used in electronic devices such as high-speed hard drives, memory modules, power supply modules, heat dissipation modules, transistors, vacuum tubes, automotive engine control units, and communication hardware. In these fields, thermal pads play a crucial role as thermal interface materials.

[0003] As an important heat conduction material in electronic devices, thermal pads do have some drawbacks related to multi-channel thermal design in practical applications.

[0004] Thermal pads are designed to improve heat transfer efficiency by filling the gaps between heat-generating components and heatsinks or housings using their flexibility, compliance, and high compressibility. However, when using multi-channel thermal conductivity, the internal structure of the thermal pad may become relatively loose. This is because multi-channel designs often require constructing more complex heat conduction paths within the pad, which can lead to a decrease in the overall structural strength of the pad material.

[0005] A loose structure directly affects the thermal conductivity of thermal pads. On one hand, a loose internal structure may increase thermal resistance, hindering heat transfer. On the other hand, loose pads are more prone to deformation under external forces, further reducing their fit with heat-generating components and heat sinks, thus affecting effective heat transfer. Summary of the Invention

[0006] The main objective of this invention is to provide a thermally conductive pad with high electrical insulation, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A thermally conductive pad with high electrical insulation includes an insulating layer, wherein the sidewall of the insulating layer has a plurality of transverse through holes and the lower end of the insulating layer has a plurality of vertical holes, wherein the transverse through holes and the vertical holes are filled with a thermally conductive layer.

[0009] The thermally conductive layer includes thermally conductive pipes and thermally conductive vertical pipes. The first, second, and third thermally conductive pipes are stacked in parallel. Each of the first, second, and third thermally conductive pipes has a thermally conductive flow channel. The sidewalls of the first, second, and third thermally conductive pipes have multiple thermally conductive vertical pipes. The first, second, and third thermally conductive pipes are adapted to the horizontal through holes, and the thermally conductive vertical pipes are adapted to the vertical holes. A colloid injection channel is formed at the intersection of the first, second, and third thermally conductive pipes. The colloid injection channel has a lateral overflow hole that communicates with the thermally conductive flow channel. Thermally conductive silicone grease overflows from the colloid injection channel into the thermally conductive flow channel.

[0010] As a preferred embodiment of this utility model, the first heat pipe, the second heat pipe and the third heat pipe have the same diameter, the first heat pipe, the second heat pipe and the third heat pipe are designed as a single unit, and a notch is formed at the connection of the first heat pipe, the second heat pipe and the third heat pipe. This notch is adapted to the transverse through hole, so that the first heat pipe, the second heat pipe and the third heat pipe fit into the transverse through hole.

[0011] As a preferred embodiment of this utility model, the first heat pipe, the second heat pipe and the third heat pipe are designed with a flat channel for the entire heat conduction flow channel, and the heat conduction vertical pipe is connected to the heat pipe by a thread, and multiple heat conduction vertical pipes are distributed equidistantly on the heat pipe.

[0012] As a preferred embodiment of this utility model, a push-type heat-conducting strip is inserted into the colloid injection channel. The push-type heat-conducting strip has the same shape as the colloid injection channel, and the push-type heat-conducting strip squeezes the thermal grease in the colloid injection channel into the heat-conducting flow channel.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This product possesses excellent electrical insulation properties, ensuring the safe and stable operation of equipment under extreme environments of high temperature and high pressure, and providing robust protection for electrical systems.

[0015] This product boasts highly efficient heat conduction capabilities. Through a carefully designed thermally conductive layer, it rapidly transfers heat from the heat source to the heat dissipation area, significantly improving heat dissipation efficiency. Furthermore, its compact structure, achieved through an integrated design and tightly fitted component layout, ensures excellent thermal conductivity and insulation even in limited spaces. To further optimize heat conduction, the product employs flat thermal flow channels and equidistantly distributed vertical thermal conduits, ensuring uniform heat transfer within the pad and preventing localized overheating.

[0016] This product excels in stability and cleanliness. By employing push-type thermal strips and thermal fillers, it effectively prevents the overflow of thermal grease, thereby maintaining the cleanliness of the gasket and ensuring long-term performance stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a diagram showing the overall structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the heat-conducting layer of this utility model;

[0020] Figure 4 This is a diagram illustrating the heat-conducting layer of this utility model;

[0021] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0022] In the diagram: 1. Insulating layer; 2. Thermally conductive layer; 20. First thermally conductive pipe; 21. Second thermally conductive pipe; 22. Third thermally conductive pipe; 23. Thermal flow channel; 24. Lateral overflow hole; 25. Vertical thermally conductive pipe; 26. Glue injection channel; 27. Push-type thermally conductive strip; 3. Horizontal through hole; 4. Vertical hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 5 As shown, a thermally conductive pad with high electrical insulation is provided. The pad consists of an insulating layer 1 with multiple horizontal through-holes 3 carefully designed on its sidewalls, and multiple vertical holes 4 also formed at the lower end of the insulating layer 1. The interior of these horizontal through-holes 3 and vertical holes 4 is filled with a thermally conductive layer 2 to ensure that the pad can efficiently conduct heat while providing insulation performance.

[0025] The thermally conductive layer 2 consists of thermally conductive pipes and vertically conductive conduits 25, specifically including a first thermally conductive pipe 20, a second thermally conductive pipe 21, and a third thermally conductive pipe 22, which are arranged in a parallel stacked design. Thermally conductive flow channels 23 are uniformly formed on the surfaces of the first thermally conductive pipe 20, the second thermally conductive pipe 21, and the third thermally conductive pipe 22. Furthermore, multiple vertically conductive conduits 25 are provided on the sidewalls of these thermally conductive pipes, which are adapted to the horizontal through-holes 3 and vertical holes 4 to ensure effective heat transfer within the gasket. At the intersection of the first thermally conductive pipe 20, the second thermally conductive pipe 21, and the third thermally conductive pipe 22, a colloid injection channel 26 is formed. The inner side of this channel also has lateral overflow holes 24 communicating with the thermally conductive flow channels 23. When thermally conductive silicone grease is filled into the colloid injection channel 26, the silicone grease can smoothly overflow and fill the thermally conductive flow channels 23.

[0026] To ensure structural compactness and thermal conductivity, the first heat pipe 20, the second heat pipe 21, and the third heat pipe 22 are designed with the same diameter and are integrated into one piece. At the joints, these heat pipes form notches that perfectly fit into the transverse through-holes 3, ensuring that the first heat pipe 20, the second heat pipe 21, and the third heat pipe 22 can fit tightly into the transverse through-holes 3, thereby improving the overall thermal conductivity.

[0027] To further optimize thermal conductivity, the first heat pipe 20, the second heat pipe 21, and the third heat pipe 22 are designed as a flat heat conduction channel 23, while the vertical heat conduction pipes 25 are connected to the heat pipes by threads, ensuring that multiple vertical heat conduction pipes 25 can be distributed equidistantly on the heat pipes, thereby uniformly distributing heat.

[0028] Insulation layer 1 serves as the base of the gasket, and its material is selected from one or more mixtures of silicone resin, polyimide, epoxy resin, alumina fiber, and carbon fiber / glass fiber. These materials all possess excellent electrical insulation properties, ensuring the safe use of the gasket under high temperature and high pressure environments.

[0029] The thermally conductive material of the thermally conductive layer 2 is selected from one or more mixtures of artificial graphite film, alumina, boron nitride, carbon fiber, and silicone thermal pads. These materials all have excellent thermal conductivity and can quickly and effectively conduct heat from the heat source to the heat dissipation area.

[0030] A push-type thermal conductive strip 27 is specially designed inside the colloid injection channel 26, and its shape is completely consistent with the colloid injection channel 26. When the push-type thermal conductive strip 27 is inserted, it can squeeze the thermal conductive silicone grease in the colloid injection channel 26 into the thermal conductive flow channel 23, thereby further improving the thermal conductivity of the gasket.

[0031] The push-type thermally conductive strip 27 is composed of thermally conductive fillers, including one or more of alumina, boron nitride, and aluminum nitride. These fillers not only provide excellent thermal conductivity but also ensure that thermal grease does not overflow during use, thus maintaining the cleanliness of the pad and the stability of its performance.

[0032] Prepare an insulating layer 1, ensuring that its sidewalls have multiple horizontal through holes 3 and its lower end has multiple vertical holes 4. Prepare a heat-conducting layer 2, including a first heat-conducting pipe 20, a second heat-conducting pipe 21, and a third heat-conducting pipe 22. These heat-conducting pipes are designed to be stacked in parallel, and heat-conducting channels 23 are evenly opened on their surfaces. Multiple vertical heat-conducting channels 25 are opened on the sidewalls of the heat-conducting pipes, ensuring that they are compatible with the horizontal through holes 3 and the vertical holes 4. A colloid injection channel 26 is formed at the intersection of the first heat-conducting pipe 20, the second heat-conducting pipe 21, and the third heat-conducting pipe 22, and a lateral overflow hole 24 communicating with the heat-conducting channel 23 is provided inside the channel. An integrated design is adopted to ensure that the diameters of the first heat-conducting pipe 20, the second heat-conducting pipe 21, and the third heat-conducting pipe 22 are consistent, and a notch is formed at the connection point to perfectly fit the horizontal through holes 3. The heat-conducting vertical pipes 25 are designed to be threaded onto the heat-conducting pipe, ensuring that multiple heat-conducting vertical pipes 25 can be distributed equidistantly on the heat-conducting pipe.

[0033] Choose a material for insulating layer 1, such as one or more of silicone resin, polyimide, epoxy resin, alumina fiber, and carbon fiber / glass fiber. Choose a thermally conductive material for thermally conductive layer 2, such as one or more of artificial graphite film, alumina, boron nitride, carbon fiber, and silicone thermal pads.

[0034] Prepare a push-type thermal conductive strip 27, whose shape is completely consistent with the colloid injection channel 26, and which is composed of one or more thermally conductive fillers such as alumina, boron nitride, and aluminum nitride. Insert the push-type thermal conductive strip 27 into the colloid injection channel 26 to ensure that the thermal grease can be squeezed into the thermal flow channel 23.

[0035] Insert the filled thermally conductive layer 2 into the horizontal through-holes 3 and vertical holes 4 of the insulating layer 1, ensuring that the vertical thermally conductive pipes 25 fit the holes. Ensure that all components fit tightly to improve overall thermal conductivity and structural compactness.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A thermally conductive pad with high electrical insulation, comprising an insulating layer (1) and a first thermally conductive pipe (20), characterized in that: The sidewall of the insulating layer (1) is provided with a plurality of transverse through holes (3), and the lower end of the insulating layer (1) is provided with a plurality of vertical holes (4). The transverse through holes (3) and the vertical holes (4) are filled with a heat-conducting layer (2). The heat-conducting layer (2) includes heat-conducting pipes and heat-conducting vertical pipes (25). The first heat-conducting pipe (20), the second heat-conducting pipe (21), and the third heat-conducting pipe (22) are stacked in parallel. Heat-conducting channels (23) are provided on the first heat-conducting pipe (20), the second heat-conducting pipe (21), and the third heat-conducting pipe (22). Multiple heat-conducting vertical pipes (25) are provided on the side walls of the first heat-conducting pipe (20), the second heat-conducting pipe (21), and the third heat-conducting pipe (22). The second heat pipe (21) and the third heat pipe (22) are adapted to the horizontal through hole (3), and the heat-conducting vertical pipe (25) is adapted to the vertical hole (4). The first heat pipe (20), the second heat pipe (21) and the third heat pipe (22) intersect to form a colloid injection channel (26). The colloid injection channel (26) has a lateral overflow hole (24) that communicates with the heat-conducting flow channel (23). The thermal grease in the colloid injection channel (26) overflows into the heat-conducting flow channel (23).

2. The thermally conductive pad with high electrical insulation according to claim 1, characterized in that: The first heat pipe (20), the second heat pipe (21) and the third heat pipe (22) have the same diameter. The first heat pipe (20), the second heat pipe (21) and the third heat pipe (22) are designed as a single unit. A notch is formed at the connection of the first heat pipe (20), the second heat pipe (21) and the third heat pipe (22). The notch is adapted to the transverse through hole (3) so that the first heat pipe (20), the second heat pipe (21) and the third heat pipe (22) fit into the transverse through hole (3).

3. A thermally conductive pad with high electrical insulation according to claim 2, characterized in that: The first heat pipe (20), the second heat pipe (21) and the third heat pipe (22) are designed as a flat channel for the entire heat conduction flow channel (23). The heat conduction vertical pipe (25) is connected to the heat pipe by a thread, and multiple heat conduction vertical pipes (25) are distributed equidistantly on the heat pipe.

4. A thermally conductive pad with high electrical insulation according to any one of claims 1-3, characterized in that: A push-type heat-conducting strip (27) is inserted into the colloid injection channel (26). The push-type heat-conducting strip (27) has the same shape as the colloid injection channel (26). The push-type heat-conducting strip (27) squeezes the thermal grease in the colloid injection channel (26) into the thermal flow channel (23).

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