CN211125115U

CN211125115U - High-heat-dissipation wire structure for automobile

Info

Publication number: CN211125115U
Application number: CN201922456907.XU
Authority: CN
Inventors: 李章刚; 傅文汇
Original assignee: Aptiv Electric System Co ltd
Current assignee: Aptiv Electric System Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-07-28
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a high heat dissipation wire structure for car, including heart yearn, heat dissipation layer and sheath, the heat dissipation layer parcel is in the heart yearn outside, and the sheath parcel is in the outside on heat dissipation layer, and the heart yearn includes conductor and insulating layer, and the insulating layer parcel is in the conductor outside, and the heat dissipation layer includes many heat dissipation strips, and the heat dissipation strip is parallel to each other and along the axial setting of heart yearn, is equipped with first heat dissipation clearance between two adjacent heat dissipation strips. Compared with the prior art, the utility model provides the high radiating effect of wire is showing the life who improves the wire. Be equipped with first heat dissipation clearance between two adjacent heat dissipation strips in the heat dissipation layer for guarantee at wire in-process heat dissipation layer and heart yearn of buckling, and the laminating of sheath, ensure the radiating effect.

Description

High-heat-dissipation wire structure for automobile

Technical Field

The utility model relates to a car cable especially relates to a high heat dissipation wire structure for car.

Background

The existing automobile lead generally has no heat dissipation structure design, and basically only can be used for heat dissipation by heat radiation of the lead and air convection. The space in the vehicle is narrow and small, and the heat dissipation effect is poor. For copper and aluminum wires, the higher the wire temperature, the lower the current carrying capacity of the wire. If the current carrying capacity of a wire exceeds its ultimate carrying capacity, a fault may be caused by an untimely heat dissipation. The lead in the automobile works at higher temperature for a long time, which not only affects the transmission function of the power or signals of the lead, but also the protective sleeve on the outer layer of the lead is easy to age and peel off, resulting in the failure of the lead.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome the above-mentioned drawbacks of the prior art and provide a high heat dissipation wire structure for automobiles.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a high heat dissipation wire structure for car, includes heart yearn, heat dissipation layer and sheath, heat dissipation layer parcel in the heart yearn outside, the sheath parcel in the outside on heat dissipation layer, the heart yearn include conductor and insulating layer, the insulating layer parcel is in the conductor outside, heat dissipation layer include many heat dissipation strips, the heat dissipation strip is parallel to each other and along the axial setting of heart yearn, be equipped with first heat dissipation clearance between two adjacent heat dissipation strips.

Furthermore, each radiating strip comprises a plurality of radiating fins, the radiating fins are arranged at intervals to form the radiating strips, and the interval between every two adjacent radiating fins is a second radiating gap.

Further, the heat dissipation strip is a graphene sheet.

Furthermore, the thickness of the heat dissipation layer is 0.05 mm-2.0 mm.

Furthermore, the thickness of the insulating layer is 0.01-0.05 mm.

Furthermore, a heat conducting adhesive layer is arranged between the heat dissipation layer and the insulating layer.

Furthermore, the heat-conducting adhesive layer is made of acrylic adhesive doped with heat-conducting metal powder, heat-conducting powder aluminum nitride, graphite powder or graphene powder.

Furthermore, an electromagnetic shielding layer is arranged between the heat dissipation layer and the mutual sheath, the electromagnetic shielding layer adopts a tinned copper wire braided layer or an aluminum-magnesium alloy wire braided layer, and the braiding density is not less than 70%.

Further, the sheath is a PVC sheath, an X L PO sheath, an X L PE sheath, a silicon rubber sheath, a TPE sheath or a TPU sheath.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses an increase the heat dissipation layer in the wire structure, improved the radiating effect of wire, show the life who improves the wire. A first heat dissipation gap is formed between every two adjacent heat dissipation strips in the heat dissipation layer and used for ensuring the adhesion of the heat dissipation layer, the core wire and the sheath in the bending process of the lead and ensuring the heat dissipation effect; meanwhile, the flexibility of the lead is improved.

2. The utility model provides a heat dissipation strip is the form of fin combination to be equipped with second heat dissipation clearance between the fin, further ensured the laminating degree on heat dissipation layer when the wire is buckled, and can prevent that the heat dissipation layer is impaired when the wire is buckled.

3. The heat dissipation layer is adhered to the core wire through the heat conduction adhesive layer, and the heat dissipation structure is simple in structure, easy to achieve and low in cost.

4. Be equipped with the electromagnetic shield layer that adopts tinned copper wire weaving layer or almag silk weaving layer to form between heat dissipation layer and the sheath, electromagnetic shield layer itself helps the heat dissipation for the metal, can play signal shielding's effect simultaneously, improves the stability of wire work.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the first embodiment.

Fig. 2 is a schematic view of the distribution of the heat dissipation layer according to the second embodiment.

Fig. 3 is a schematic cross-sectional structure diagram of the third embodiment.

Reference numerals: 1. the heat dissipation structure comprises a core wire, 11, a conductor, 12, an insulating layer, 2, a heat dissipation layer, 21, a heat dissipation strip, 22, a first heat dissipation gap, 23, a heat dissipation fin, 24, a second heat dissipation gap, 3, a sheath, 4 and an electromagnetic shielding layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example one

As shown in fig. 1, the present embodiment provides a high heat dissipation wire structure for an automobile, including a core wire 1, a heat dissipation layer 2, and a sheath 3. Heat dissipation layer 2 parcel is in the 1 outside of heart yearn, and 3 parcels of sheath are in the outside of heat dissipation layer 2, wherein:

the core wire 1 includes a conductor 11 and an insulating layer 12. The insulating layer 12 wraps the outer side of the conductor 11, and the thickness of the insulating layer 12 is generally 0.01-0.05 mm, which is 0.05mm in the embodiment. The insulating layer 12 is made of a commercially available common wire insulating material, and has a relatively good thermal conductivity because of its relatively small thickness. The cross-sectional area of the core wire 1 is generally 0.05mm²To 160mm²In this embodiment, 10mm is adopted². The conductor 11 is a copper, copper alloy, aluminum or aluminum alloy conductor 11; the cross-sectional shape of the conductor 11 may be circular, rectangular or other irregular shapes.

The heat dissipation layer 2 includes a plurality of heat dissipation strips 21, and the heat dissipation strips 21 are parallel to each other and disposed outside the insulating layer 12 in the axial direction of the core wire 1. A first heat dissipation gap 22 is formed between two adjacent heat dissipation strips 21. In the embodiment, three heat dissipation strips 21 are adopted, the heat dissipation strips 21 are all made of graphene sheets, and the width of each graphene sheet is 1/6-1/3 of the periphery of the core wire 1. The thickness of the heat dissipation layer 2 is generally 0.05mm to 2.0mm, and this is 1mm in this embodiment. Each heat dissipation strip 21 is adhered to the outer side of the insulating layer 12 through a heat conductive adhesive, i.e., a heat conductive adhesive layer is arranged between the heat dissipation layer 2 and the insulating layer 12. The heat-conducting glue is acrylic glue doped with heat-conducting metal powder, heat-conducting powder aluminum nitride, graphite powder or graphene powder.

The sheath 3 is used as the outermost layer by adopting an extrusion process, and the material of the sheath 3 can be common protective materials such as PVC, X L PO, X L PE, silicon rubber, TPE, TPU and the like

The embodiment adds the graphene sheet as the heat dissipation layer 2 in the lead structure, homogenizes the temperature in the lead, and leads the temperature to an external low-temperature area, thereby improving the heat dissipation efficiency and ensuring the stable work of the lead.

Example two

As shown in fig. 2, the overall structure of the present embodiment is the same as that of the first embodiment, and the difference is that each heat dissipation strip 21 in the heat dissipation layer 2 is formed by arranging a plurality of heat dissipation fins 23 at intervals, and the intervals between the heat dissipation fins 23 are second heat dissipation gaps 24. The arrangement of the second heat dissipation gap 24 further ensures the adhesion of the heat dissipation layer when the wire is bent, and can prevent the heat dissipation layer from being damaged when the wire is bent.

EXAMPLE III

As shown in fig. 3, the overall structure of the present embodiment is the same as that of the first embodiment, and the difference is that an electromagnetic shielding layer 4 is disposed between the heat dissipation layer 2 and the sheath 3, the electromagnetic shielding layer 4 is a tinned copper wire braid or an aluminum magnesium alloy wire braid, and the braid density is not less than 70%. Electromagnetic shield layer 4 itself helps the heat dissipation for the metal, can play the effect of signal shielding simultaneously, prevents that the outside electromagnetic signal of wire from disturbing, improves the stability of wire work.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a high heat dissipation wire structure for car, its characterized in that, includes heart yearn (1), heat dissipation layer (2) and sheath (3), heat dissipation layer (2) parcel in heart yearn (1) outside, sheath (3) parcel in the outside of heat dissipation layer (2), heart yearn (1) including conductor (11) and insulating layer (12), insulating layer (12) parcel is in conductor (11) outside, heat dissipation layer (2) including many heat dissipation strip (21), heat dissipation strip (21) are parallel to each other and along the axial setting of heart yearn (1), are equipped with first heat dissipation clearance (22) between two adjacent heat dissipation strip (21).

2. The high-heat-dissipation wire structure for the automobile as claimed in claim 1, wherein each heat dissipation strip (21) comprises a plurality of heat dissipation fins (23), the heat dissipation fins (23) are arranged at intervals to form the heat dissipation strip (21), and the interval between adjacent heat dissipation fins (23) is a second heat dissipation gap (24).

3. The high heat dissipation wire structure for automobiles according to claim 1 or 2, wherein the heat dissipation strip (21) is a graphene sheet.

4. The high heat dissipation conducting wire structure for the automobile as claimed in claim 3, wherein the thickness of the heat dissipation layer (2) is 0.05mm to 2.0 mm.

5. The high-heat-dissipation lead structure for the automobile as claimed in claim 1, wherein the thickness of the insulating layer (12) is 0.01-0.05 mm.

6. The high heat dissipation wire structure for the automobile as claimed in claim 1, wherein a thermal conductive adhesive layer is disposed between the heat dissipation layer (2) and the insulation layer (12).

7. The high heat dissipation conducting wire structure for the automobile as claimed in claim 1, wherein an electromagnetic shielding layer (4) is disposed between the heat dissipation layer (2) and the mutual sheath (3), the electromagnetic shielding layer (4) is a braided layer of tin-plated copper wire or aluminum-magnesium alloy wire, and the braiding density is not less than 70%.

8. The structure of high heat dissipating lead wire for automobile of claim 1, wherein the sheath (3) is a PVC sheath, an X L PO sheath, an X L PE sheath, a silicone rubber sheath, a TPE sheath or a TPU sheath.