Special cable sheath structure for high-strength direct-current charging pile

Abstract

The utility model discloses a special cable sheath structure for a high-strength direct-current charging pile in the field of cables, which comprises an outer sheath and a plurality of core wires, the core wires are arranged in the outer sheath, and the inner layer of the outer sheath is provided with a reinforcing layer; the reinforcing layer is formed by weaving high-strength fiber ropes, and the weaving density is larger than or equal to 80% and smaller than 100%. According to the utility model, by adopting the newly designed charging pile cable outer sheath reinforced protection structure, various harsh use environments of the charging pile cable in a public parking area can be satisfied, the service life of the charging pile connecting cable is greatly prolonged, and the safety of the charging pile connecting cable is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable field, especially relate to a high strength direct current charging pile special cable sheath structure. BACKGROUND

[0002] In prior art, direct current charging pile is generally installed and arranged in outdoor public parking area, and the outer sheath of direct current charging pile cable needs to withstand external force such as dragging, twisting, abrasion, impact, and the sheath damage condition often occurs within the expected service life, so as to damage the internal structure of charging pile cable, directly bring the safety hazard of electric vehicle charging process, and cause the charging pile connecting cable to be unable to be normally used or even directly scrapped. At present, a high-strength charging pile special cable sheath structure is urgently needed. SUMMARY

[0003] The utility model discloses a kind of high-strength direct current charging pile special cable sheath structures, can be met with various harsh use environments of charging pile cable of public parking area by using the new design of charging pile cable outer sheath reinforced protection structure, greatly improve the service life and safety of charging pile connecting cable.

[0004] The utility model discloses a kind of high-strength direct current charging pile special cable sheath structures, including outer sheath and core wire, core wire is arranged in outer sheath, the core wire is provided with multiple, the inner layer of outer sheath is provided with reinforcing layer.

[0005] Compared with prior art, the utility model has the beneficial effects that: 1, the utility model effectively improves the protection strength of outer sheath, and a layer of reinforcing layer is woven in the inner layer of outer sheath, the reinforcing layer is woven by high-strength fiber rope, and the weaving density is greater than or equal to 80%, and outer sheath protection structure design is adopted;2, outer sheath extrusion process technology is used, which improves the sheath strength while meeting the softness of charging pile cable, and outer sheath extrusion adopts extrusion process with larger pressure, to ensure that the outer sheath material and woven reinforcing layer are completely bonded;3, wear-resistant and impact-resistant verification technology is used, one is wear-resistant performance verification: cable outer sheath should withstand not less than 10,000 times of scraping test and 1,000 times of dragging test, without core wire current circuit breaking or core wire inner conductor short circuit;Second is impact-resistant verification: cable outer sheath can heat impact test requirements, after vehicle rolling test, cable meets the requirements of not having current circuit breaking or conductor short circuit, while the insulation and sheath appearance are observed without cracking phenomenon.

[0006] As a further improvement of this utility model, the reinforcing layer is woven from high-strength fiber rope with a weaving density greater than or equal to 80% and less than 100%. The high-strength fiber rope can be made of high-strength polyethylene fiber rope, high-strength carbon fiber rope, etc. The woven reinforcing layer greatly improves the structural strength of the outer sheath and protects the internal core wire.

[0007] As a further improvement of this utility model, each of the core wires is surrounded by a wrapping tape layer, the reinforcing layer wraps around the wrapping tape layer, and the outer sheath is made of polymer material extruded to cover the reinforcing layer. The outer sheath is extruded using a high-pressure extrusion process to ensure complete adhesion between the outer sheath material and the braided reinforcing layer.

[0008] As a further improvement of this invention, asbestos is filled between the core wires within the wrapping tape layer. The asbestos completely fills the gaps between the core wires within the wrapping tape layer, resulting in higher structural strength.

[0009] As a further improvement of this utility model, a total of eight core wires are provided. The outer peripheries of two adjacent core wires are tangentially arranged to improve the tightness, stability and strength of the cable. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] The structure consists of 1 core wire, 2 asbestos, 3 wrapping tape layer, 4 reinforcing layer, and 5 outer sheath. Detailed Implementation

[0012] like Figure 1 The diagram shows a high-strength DC charging pile cable sheath structure, comprising an outer sheath 5 and core wires 1. Multiple core wires 1 are arranged within the outer sheath 5. A reinforcing layer 4 is provided inside the outer sheath 5. The reinforcing layer 4 is woven from high-strength fiber rope with a weaving density greater than or equal to 80% and less than 100%. The high-strength fiber rope can be high-strength polyethylene fiber rope, high-strength carbon fiber rope, etc. The woven reinforcing layer 4 significantly improves the structural strength of the outer sheath 5, protecting the internal core wires 1. Each core wire 1 is wrapped with a wrapping tape layer 3, which is then wrapped by the reinforcing layer 4. The outer sheath 5 is extruded with a polymer material to cover the reinforcing layer 4. The outer sheath 5 is extruded using a high-pressure extrusion process to ensure complete adhesion between the outer sheath 5 material and the braided reinforcing layer 4.

[0013] Asbestos 2 is filled between each core wire 1 within the wrapping tape layer 3. The asbestos 2 completely fills the gaps between each core wire 1 within the wrapping tape layer 3, resulting in higher structural strength.

[0014] Eight core wires 1 are arranged in total. The outer peripheries of two adjacent core wires 1 are arranged tangentially, so that the compactness, stability and strength of the cable are improved.

[0015] The utility model discloses a protective structure design of outer sheath 5, extrusion process technology of outer sheath 5 and wear and impact resistance verification technology. The utility model effectively improves the protection strength of outer sheath 5, and a reinforcing layer 4 is woven in the inner layer of outer sheath 5, the reinforcing layer 4 is woven by high-strength fiber rope, and the weaving density is greater than or equal to 80%, and the protective structure design of outer sheath 5 is adopted. The extrusion process technology of outer sheath 5 improves the strength of the protective layer and also meets the softness of the charging pile cable, the extrusion process technology of outer sheath 5 uses large pressure extrusion, which ensures that the material of outer sheath 5 and the woven reinforcing layer 4 are completely bonded. The wear and impact resistance verification technology is adopted, and the wear resistance verification is as follows: the cable outer sheath 5 should withstand not less than 10,000 times of scraping test and 1,000 times of dragging test, without current circuit breaking of core wire 1 and short circuit between inner conductors of core wire 1. The impact resistance verification is as follows: the cable outer sheath can meet the requirements of not having current circuit breaking and short circuit between conductors after vehicle rolling test, and there is no cracking phenomenon in the insulation and sheath appearance.

[0016] The utility model discloses not limited to the above embodiment, on the basis of the technical scheme disclosed in the utility model, the skilled in the art can make some substitutions and deformation to some technical features in the disclosed technical content without creative labor, and these substitutions and deformation are all within the protection scope of the utility model.

Claims

1. A sheath structure for a high-strength DC charging pile cable, comprising an outer sheath and core wires, wherein the core wires are disposed within the outer sheath, and multiple core wires are disposed therein, characterized in that, The outer sheath has an inner reinforcing layer; the reinforcing layer is woven from high-strength fiber rope with a weaving density greater than or equal to 80% and less than 100%; each core wire is wrapped with a wrapping tape layer, and the reinforcing layer wraps around the wrapping tape layer; the outer sheath is made of polymer material extruded to cover the reinforcing layer; asbestos is filled between each core wire in the wrapping tape layer; there are a total of eight core wires; the outer peripheries of two adjacent core wires are tangential.

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