Multi-core high-efficiency heat dissipation type wire harness

Abstract

The utility model relates to the technical field of wire harnesses, in particular to a multi-core high-efficiency heat dissipation type wire harness, which comprises a plurality of groups of core wires, the core wires adopt conductors with hollow structures, the conductors are made of high-purity oxygen-free copper, the hollow parts of the core wires are filled with heat-conducting silica gel, and a composite insulating layer is wrapped outside the plurality of groups of core wires. The composite insulating layer is formed by an inner polyimide insulating layer and an outer graphene heat dissipation coating, the shielding layer is formed by weaving tinned copper wires with the weaving density not lower than 85% and wraps the composite insulating layer, the outer sheath is made of a silicone rubber material, and longitudinal heat dissipation grooves distributed in a spiral shape are formed in the outer sheath. And heat dissipation holes are formed in the shielding layer and the outer sheath. The beneficial effects of the utility model lie in that the core wire of the hollow structure is matched with the heat conduction silica gel, and a three-dimensional heat dissipation channel formed by the spiral longitudinal heat dissipation grooves and the transverse heat dissipation holes, so that the heat generated by the core wire can be quickly and effectively dissipated, compared with a traditional wire harness, the heat dissipation efficiency is obviously improved, and the operation temperature of the wire harness can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of wire harness technology, and in particular to a multi-core high-efficiency heat dissipation wire harness. Background Technology

[0002] With the continuous development of electronic devices and electrical systems, the demand for multi-core wire harnesses is increasing and the performance requirements are becoming more stringent. Multi-core wire harnesses are suitable for scenarios with high heat dissipation requirements, such as new energy vehicles, servers, and high-frequency communication equipment. They can effectively reduce the heat generated during the operation of the wire harness and ensure the stable transmission of electrical signals and power.

[0003] During the use of multi-core wire harnesses, a large amount of heat is generated because multiple core wires transmit current simultaneously. Traditional multi-core wire harnesses have poor heat dissipation performance. Their core wires usually use conventional copper conductors and ordinary insulation layers, making it difficult for heat to dissipate. On the one hand, the accumulation of heat can easily lead to accelerated aging of the insulation layer of the core wires, reducing insulation performance, increasing the risk of short circuits, and affecting the normal use and safety of the wire harness. On the other hand, excessively high temperatures can also affect the conductivity of the core wires, causing unstable signal transmission, and even problems such as signal attenuation and distortion. In addition, traditional wire harnesses lack effective heat dissipation structure design and cannot actively guide heat dissipation, relying only on natural heat dissipation, which has low heat dissipation efficiency and cannot meet the heat dissipation requirements of modern high-power, high-frequency equipment for multi-core wire harnesses.

[0004] To address the above issues, we have launched a multi-core, high-efficiency heat dissipation wire harness. Utility Model Content

[0005] This utility model discloses a multi-core high-efficiency heat dissipation wire harness, which aims to solve the technical problems in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-core high-efficiency heat-dissipating wire harness includes multiple sets of core wires. The core wires are hollow conductors made of high-purity oxygen-free copper. The hollow parts of the core wires are filled with thermally conductive silicone. The multiple sets of core wires are spirally twisted together. The harness also includes: a composite insulation layer that wraps around the multiple sets of core wires and consists of an inner polyimide insulation layer and an outer graphene heat-dissipating coating; a shielding layer that is braided with tinned copper wire with a braiding density of not less than 85% and wraps around the composite insulation layer; and an outer sheath that is made of silicone rubber with a smooth surface and has spirally distributed longitudinal heat dissipation grooves inside. Heat dissipation holes are distributed inside both the shielding layer and the outer sheath.

[0008] In the battery management system of electric vehicles, heat is generated when multiple core wires transmit large currents. The thermally conductive silicone in the hollow structure quickly conducts the heat, which is then diffused through the polyimide insulation layer and the graphene heat dissipation coating. Finally, the heat is dissipated to the outside through the heat dissipation holes of the shielding layer and the outer sheath, as well as the spiral heat dissipation grooves, ensuring the stable operation of the wiring harness.

[0009] In a preferred embodiment, each of the two ends of the plurality of core wires is fixedly connected with a connector.

[0010] When wiring equipment in industrial automated production lines, multi-segment, multi-core, high-efficiency heat-dissipating wire harnesses can be quickly connected using connectors. The connection is secure and does not affect the overall heat dissipation performance of the wire harness, facilitating equipment installation and maintenance while ensuring stable signal and power transmission.

[0011] In a preferred embodiment, the graphene heat dissipation coating is used to rapidly diffuse the heat conducted by the core wire into the surrounding environment.

[0012] In high-power server room cabling, when the core wires generate a lot of heat due to prolonged high-load operation, the graphene heat dissipation coating, with its high thermal conductivity, quickly and evenly diffuses the heat into the surrounding air, reducing the wire harness temperature, ensuring stable server operation, and preventing failures due to overheating.

[0013] In a preferred embodiment, the heat dissipation groove is aligned with the twisting direction of the multiple sets of core wires, serving to guide airflow along the axial direction of the wire harness.

[0014] In the electrical system of high-speed trains, the airflow generated during train operation flows along the heat dissipation grooves that are aligned with the twisting direction of the core wires, forming convection and quickly carrying away the heat inside the wiring harness. Even when the train is running at high speed for a long time and the wiring harness is continuously powered and generating heat, it can effectively dissipate heat.

[0015] In a preferred embodiment, the heat dissipation holes allow air to circulate, forming a three-dimensional heat dissipation channel.

[0016] In dense data center cabinet cabling, heat dissipation holes and heat dissipation channels work together to allow air to flow not only axially but also through the heat dissipation holes inside and outside the shielding layer and outer sheath, creating a three-dimensional heat dissipation channel to dissipate the heat generated by the cabling bundle in a timely manner and maintain the stable operation of the data center.

[0017] The multi-core high-efficiency heat dissipation wire harness provided by this utility model has the following advantages:

[0018] In this utility model:

[0019] 1. The hollow core wire, combined with thermally conductive silicone and a three-dimensional heat dissipation channel consisting of spiral longitudinal heat dissipation grooves and transverse heat dissipation holes, can quickly and effectively dissipate the heat generated by the core wire. Compared with traditional wire harnesses, the heat dissipation efficiency is significantly improved, which can effectively reduce the operating temperature of the wire harness.

[0020] 2. Excellent heat dissipation performance avoids the problems of insulation layer aging and decreased conductivity caused by heat accumulation, ensuring the insulation performance of the wire harness and the stability of signal transmission, reducing the probability of failure, improving the reliability of equipment operation, and greatly improving the quality of operation and efficiency compared with traditional devices. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the multi-core high-efficiency heat dissipation wire harness proposed in this utility model.

[0022] Figure 2 This is an exploded view of the multi-core high-efficiency heat dissipation wire harness proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the core wire structure of the multi-core high-efficiency heat dissipation wire harness proposed in this utility model.

[0024] Figure 4 This is a side sectional view of the multi-core high-efficiency heat dissipation wire harness proposed in this utility model.

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0026] In the attached diagram: 1. Core wire; 2. Thermally conductive silicone; 3. Composite insulation layer; 301. Polyimide insulation layer; 302. Graphene heat dissipation coating; 4. Shielding layer; 5. Outer sheath; 6. Heat dissipation groove; 7. Heat dissipation hole; 8. Connecting connector. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] The multi-core high-efficiency heat dissipation wire harness disclosed in this utility model is mainly used in wire harness applications.

[0029] Reference Figures 1-5 The multi-core high-efficiency heat dissipation wire harness includes multiple sets of core wires 1, each core wire 1 is a hollow conductor made of high-purity oxygen-free copper, the hollow part of the core wire 1 is filled with thermally conductive silicone 2, the multiple sets of core wires 1 are spirally twisted together, and also includes: a composite insulation layer 3, which wraps around the multiple sets of core wires 1 and is composed of an inner polyimide insulation layer 301 and an outer graphene heat dissipation coating 302; a shielding layer 4, which is made of tin-plated copper wire with a braiding density of not less than 85% and wraps around the composite insulation layer 3; an outer sheath 5, which is made of silicone rubber material with a smooth surface and has longitudinal heat dissipation grooves 6 distributed in a spiral pattern inside; and heat dissipation holes 7 are distributed inside both the shielding layer 4 and the outer sheath 5.

[0030] In this embodiment: In the battery management system of an electric vehicle, heat is generated when multiple core wires 1 transmit large currents. The thermally conductive silicone 2 in the hollow structure quickly conducts the heat. After passing through the polyimide insulation layer 301, the graphene heat dissipation coating 302 diffuses the heat, and then dissipates it to the outside through the heat dissipation holes 7 of the shielding layer 4 and the outer sheath 5, as well as the spiral heat dissipation groove 6, to ensure the stable operation of the wiring harness.

[0031] In a preferred embodiment, each end of the plurality of core wires 1 is fixedly connected with a connector 8.

[0032] In this embodiment, when wiring equipment in an industrial automated production line, multi-segment, multi-core, high-efficiency heat-dissipating wire harnesses are quickly connected using connector 8. The connection is secure and does not affect the overall heat dissipation performance of the wire harness, facilitating equipment installation and maintenance while ensuring stable signal and power transmission.

[0033] In a preferred embodiment, the graphene heat dissipation coating 302 is used to rapidly diffuse the heat conducted by the core wire 1 to the surrounding environment.

[0034] In this embodiment: In the cabling of a high-power server room, when the core wire 1 generates a lot of heat due to long-term high-load operation, the graphene heat dissipation coating 302, with its high thermal conductivity, quickly and evenly diffuses the heat into the surrounding air, reduces the temperature of the wire harness, ensures the stable operation of the server, and avoids failure due to overheating.

[0035] In a preferred embodiment, the heat dissipation groove 6 is aligned with the twisting direction of the multiple sets of core wires 1, and is used to guide air to flow along the axial direction of the wire harness.

[0036] In this embodiment, in the electrical system of a high-speed train, the airflow generated during train operation flows along the heat dissipation groove 6, which is in the same direction as the twisting of the core wire 1, forming convection and quickly carrying away the heat inside the wire harness. Even when the train is running at high speed for a long time and the wire harness is continuously powered and generating heat, it can effectively dissipate heat.

[0037] In a preferred embodiment, the heat dissipation holes 7 allow air to circulate, forming a three-dimensional heat dissipation channel.

[0038] In this embodiment, in dense data center cabinet cabling, the heat dissipation holes 7 and the heat dissipation slots 6 work together, allowing air to flow not only along the axial direction but also through the heat dissipation holes 7 inside and outside the shielding layer 4 and the outer sheath 5, forming a three-dimensional heat dissipation channel to promptly dissipate the heat generated by the cabling bundle and maintain the stable operation of the data center.

[0039] Working principle: When using this wire harness, the multiple core wires 1 are hollow conductors made of high-purity oxygen-free copper. The hollow part of the core wire 1 is filled with thermally conductive silicone 2. The multiple core wires 1 are spirally twisted together to ensure the conductivity and thermal efficiency of the wire harness. The composite insulation layer 3 wraps around the multiple core wires 1 and consists of an inner polyimide insulation layer 301 and an outer graphene heat dissipation coating 302. The graphene heat dissipation coating 302 quickly dissipates the heat conducted by the core wires 1 to the surrounding environment. The shielding layer 4 wraps around the composite insulation layer 3, effectively shielding... Electromagnetic interference is shielded; the outer sheath 5 is made of silicone rubber and has spirally distributed longitudinal heat dissipation grooves 6 inside. The heat dissipation grooves 6 are consistent with the twisting direction of the multiple core wires 1, guiding air to flow along the axial direction of the wire harness. Heat dissipation holes 7 are distributed inside both the shielding layer 4 and the outer sheath 5, allowing air to circulate and forming a three-dimensional heat dissipation channel; the two ends of the multiple core wires 1 are fixedly connected with connectors 8 to ensure the electrical connection of the wire harness, realize the efficient heat dissipation, conductivity and shielding performance of the wire harness, and ensure the stability and reliability of the wire harness in high-temperature environments.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A multi-core high-efficiency heat dissipation wire harness, comprising multiple sets of core wires (1), characterized in that, The core wire (1) is a hollow conductor made of high-purity oxygen-free copper. The hollow portion of the core wire (1) is filled with thermally conductive silicone (2). Multiple sets of the core wires (1) are spirally twisted together. The system also includes: A composite insulation layer (3) is wrapped around the outside of multiple sets of core wires (1) and is composed of an inner polyimide insulation layer (301) and an outer graphene heat dissipation coating (302). The shielding layer (4) is made of tin-plated copper wire with a braiding density of not less than 85% and is wrapped around the outside of the composite insulation layer (3). The outer sheath (5) is made of silicone rubber material with a smooth surface and has longitudinal heat dissipation grooves (6) arranged in a spiral pattern inside. Heat dissipation holes (7) are distributed inside both the shielding layer (4) and the outer sheath (5).

2. The multi-core high-efficiency heat dissipation wire harness according to claim 1, characterized in that, Each of the two ends of the multiple sets of core wires (1) is fixedly connected with a connector (8).

3. The multi-core high-efficiency heat dissipation wire harness according to claim 1, characterized in that, The graphene heat dissipation coating (302) is used to rapidly diffuse the heat conducted by the core wire (1) to the surrounding environment.

4. The multi-core high-efficiency heat dissipation wire harness according to claim 1, characterized in that, The heat dissipation groove (6) is in the same direction as the twisting of the multiple sets of core wires (1) and is used to guide air to flow along the axial direction of the wire harness.

5. The multi-core high-efficiency heat dissipation wire harness according to claim 1, characterized in that, The heat dissipation holes (7) allow air to circulate, forming a three-dimensional heat dissipation channel.

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