New energy voltage-resistant aluminum alloy cable

Abstract

The utility model discloses a new energy pressure-resistant aluminum alloy cable, which belongs to the technical field of cables, and comprises a supporting core, a plurality of cable core units which are arranged outside the supporting core along the circumferential direction and abut against each other end to end, each cable core unit is of an arc-shaped structure, an inner sheath is sleeved outside the plurality of cable core units, a filling layer is arranged between the cable core units and the inner sheath, and the filling layer is made of aluminum alloy. Part of the cable core units abut against the supporting core, the other part of the cable core units are separated from the supporting core, a buffer cavity is formed between the other part of the cable core units and the supporting core, each cable core unit comprises a buffer layer abutting against the supporting core and a first shielding layer arranged in the buffer layer, a second shielding layer is arranged outside the inner sheath, and an outer sheath is arranged outside the second shielding layer. According to the new energy pressure-resistant aluminum alloy cable, the pressure-resistant capability of the cable is improved through the arrangement of the buffer cavity, and the cable is prevented from being easily deformed and damaged due to pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and particularly to a new energy voltage-resistant aluminum alloy cable. Background Art

[0002] With the continuous development of new energy vehicles, modern vehicles are gradually shifting from single-engine drive to pure electric drive. By reasonably adopting hybrid power technology, fuel consumption and carbon emissions can be significantly reduced, the cost can be controlled within a certain range, and with the gradual maturity of technology and the expansion of production scale, the manufacturing cost is also decreasing significantly. In order to meet the charging needs of new energy vehicles, charging piles are gradually becoming popular. However, in the specific use process, the charging cable is easily crushed by vehicles and trampled by people, which easily causes serious deformation of the cable and thus charging failures. Therefore, how to improve the voltage resistance of the charging cable for new energy vehicles is crucial. However, the current voltage resistance of the charging cable needs to be improved, and the service life of the charging cable cannot be extended. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is that in the prior art, the voltage resistance of the new energy charging cable needs to be improved, and it is easily deformed and damaged due to pressure. Based on this, the utility model provides a new energy voltage-resistant aluminum alloy cable.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a new energy voltage-resistant aluminum alloy cable, including a support core, and a plurality of cable core units that are connected end to end and held against each other are arranged circumferentially outside the support core. The cable core units are in an arc structure. An inner sheath is sleeved outside the plurality of cable core units. A filling layer is arranged between the cable core units and the inner sheath. Some of the cable core units are in contact with the support core, and the other parts of the cable core units are separated from the support core and form a buffer cavity between them and the support core. The cable core unit includes a buffer layer in contact with the support core and a first shielding layer arranged inside the buffer layer. A second shielding layer is arranged outside the inner sheath, and an outer sheath is arranged outside the second shielding layer.

[0005] Further, the surface of the buffer layer close to the support core includes a fitting surface and a separating surface. There are two separating surfaces and they are symmetrically connected to the opposite sides of the fitting surface. The fitting surface is in contact with the outer surface of the support core, and the separating surface is separated from the support core. The buffer cavity is formed by the space between the separating surface and the outer surface of the support core.

[0006] Further, the cable core unit further includes an insulating layer and a cable core. The insulating layer is arranged outside the cable core, and the first shielding layer is arranged outside the insulating layer.

[0007] Further, the cable core is composed of multiple strands of conductive metal wires, and the conductive metal wires are made of aluminum alloy material.

[0008] Further, both the first shielding layer and the second shielding layer are copper braided nets.

[0009] Further, both the inner sheath and the outer sheath are made of low-smoke and halogen-free polyolefin material.

[0010] Further, the insulating layer is made of cross-linked polyethylene material.

[0011] Further, the new energy voltage-resistant aluminum alloy cable further includes an armor layer and a wear-resistant layer. The armor layer is arranged outside the outer sheath, and the wear-resistant layer is arranged outside the armor layer.

[0012] Further, the wear-resistant layer is made of thermoplastic polyurethane rubber.

[0013] The beneficial effects of the present utility model are as follows: For the new energy voltage-resistant aluminum alloy cable of the present utility model, the cable core units are mutually abutted at the head and the tail, which plays a limiting role on the cable core units, effectively preventing the cable core units from easily moving inside the inner sheath. The buffer cavity between the inner side of the cable core unit and the support core ensures that both ends of the cable core unit can bend and deform inward when subjected to pressure, thereby playing a certain buffering role. In addition, the buffer layer on the outermost side of the cable core unit can deform when compressed and can also buffer the pressure, avoiding serious damage to the conductors inside the cable core unit due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0015] Figure 1 is a schematic structural diagram of the new energy voltage-resistant aluminum alloy cable of the present utility model.

[0016] In the figure: 1, support core; 2, cable core unit; 21, buffer layer; 211, fitting surface; 212, separation surface; 22, first shielding layer; 23, insulating layer; 24, cable core; 3, inner sheath; 4, filling layer; 9, buffer cavity; 5, second shielding layer; 6, outer sheath; 7, armor layer; 8, wear-resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will now be described in detail in conjunction with the drawings. This figure is a simplified schematic diagram, which only shows the basic structure of the present utility model in a schematic manner, so it only shows the components related to the present utility model.

[0018] Please refer to Figure 1The utility model provides a new energy pressure-resistant aluminum alloy cable, including a support core 1, a plurality of cable core units 2 are arranged circumferentially on the outside of the support core 1, the cable core units 2 are in an arc-shaped structure, an inner sheath 3 is commonly sheathed on the outside of the plurality of cable core units 2, the plurality of cable core units 2 are butted head to tail, a filling layer 4 is arranged between the cable core units 2 and the inner sheath 3, part of the cable core units 2 are butted against the support core 1, the other part of the cable core units 2 is separated from the support core 1 and a buffer cavity 9 is formed between the cable core units 2 and the support core 1, the cable core units 2 include a buffer layer 21 butted against the support core 1 and a first shielding layer 22 arranged inside the buffer layer 21, a second shielding layer 5 is arranged outside the inner sheath 3, and an outer sheath 6 is arranged outside the second shielding layer 5. In this embodiment, there are four cable core units 2.

[0019] The utility model of new energy pressure-resistant aluminum alloy cable has a filling layer 4 between the cable core unit 2 and the inner sheath 3 to fill the gap outside the cable core unit 2. At the same time, the multiple cable core units 2 are mutually supported head to tail, which plays a limiting role on the cable core unit 2 and effectively prevents the cable core unit 2 from easily moving in the inner sheath 3. The buffer cavity 9 between the inner side of the cable core unit 2 and the supporting core 1 ensures that the two ends of the cable core unit 2 can bend and deform inward when under pressure, thereby playing a certain buffering role. In addition, the outermost buffer layer 21 of the cable core unit 2 can be deformed when under pressure, and can buffer the pressure to avoid the internal conductor of the cable core unit 2 from being seriously compressed and damaged. The first shielding layer 22 is set in each cable core unit 2 to reduce the mutual interference of electromagnetic signals between the cable core units 2. Furthermore, the second shielding layer 6 set outside the outer sheath 3 can shield the electromagnetic signals outside the cable from interfering with the cable, thereby ensuring the normal operation of the cable. The inner sheath 3 and the outer sheath 6 are arranged on the inner and outer sides respectively, playing a double protection role, increasing the structural strength of the cable and preventing the cable from being easily damaged.

[0020] As a preferred embodiment, the cross-section of the buffer layer 21 is roughly an arc-shaped capsule structure, and the surface of the buffer layer 21 close to the support core 1 includes a fitting surface 211 and a separation surface 212, and there are two separation surfaces 212, which are symmetrically connected on the opposite sides of the fitting surface 211, wherein the fitting surface 211 fits with the outer surface of the support core 1, and the separation surface 212 is separated from the support core 1, and the buffer cavity 9 is formed by the space formed between the separation surface 212 and the outer surface of the support core 1. The fitting surface 211 fits with the support core 1, ensuring the contact area between the buffer layer 21 and the support core 1, thereby ensuring the connection stability between the two. In this embodiment, the buffer layer 21 is made of rubber material so that it can produce good deformation when under pressure to play a buffering function.

[0021] Further, the cable core unit 2 further includes an insulating layer 23 and a cable core 24. The insulating layer 23 is disposed outside the cable core 24, and the first shielding layer 22 is disposed outside the insulating layer 23. The outer shapes of the insulating layer 23 and the first shielding layer 22 are adapted to the shape of the buffer layer 21. The cable core 24 is composed of a plurality of conductive metal wires. In this embodiment, the conductive metal wires are made of aluminum alloy material. Aluminum alloy has good electrical conductivity and is lighter in weight than copper, enabling lightweight production. In this embodiment, the insulating layer 23 is made of cross-linked polyethylene material. Compared with polyethylene material, it can withstand higher temperatures and has high mechanical strength, ensuring the normal use of the insulating layer 23.

[0022] In this embodiment, both the first shielding layer 22 and the second shielding layer 5 are copper braided nets. A copper braided net is a shielding material woven from fine copper wires. Compared with a relatively rigid shielding sleeve, it has good flexibility, ensuring that the cable has good bending performance.

[0023] In addition, the support core 1 is made of silica gel material. The silica gel material can ensure that the cable has good bending performance to a certain extent. At the same time, the toughness of the silica gel can prevent the cable from being overly twisted, avoiding the situation where the cable is damaged due to severe twisting.

[0024] As a preferred embodiment, both the inner sheath 3 and the outer sheath 6 are made of low-smoke and halogen-free polyolefin material. This material has a low smoke emission and high flame retardancy characteristics, reducing the emission of toxic and harmful gases during combustion, which is beneficial for personnel evacuation and rescue.

[0025] The new energy voltage-resistant aluminum alloy cable of the present utility model further includes an armor layer 7 and a wear-resistant layer 8. The armor layer 7 is disposed outside the outer sheath 6 to strengthen the strength of the cable. The wear-resistant layer 8 is disposed outside the armor layer 7 to enhance the wear-resistant performance of the cable. In this embodiment, the wear-resistant layer 8 is made of thermoplastic polyurethane rubber. This material has excellent resilience and good wear-resistant performance. Its wear-resistant performance is 2 - 10 times that of natural rubber, reducing the wear of the cable during use. At the same time, this material has characteristics such as oil resistance, water resistance, and weather resistance, preventing easy damage and extending the service life.

[0026] Inspired by the above ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the scope of the present utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A new energy-resistant aluminum alloy cable, characterized in that: It includes a support core, and a plurality of cable core units that are abutted end to end are arranged circumferentially on the outside of the support core. The cable core units are in an arc structure. An inner sheath is sleeved outside the plurality of cable core units. A filling layer is arranged between the cable core units and the inner sheath. Some of the cable core units abut against the support core, and the other parts of the cable core units are separated from the support core and form a buffer cavity between them and the support core. The cable core unit includes a buffer layer abutting against the support core and a first shielding layer arranged inside the buffer layer. A second shielding layer is arranged outside the inner sheath, and an outer sheath is arranged outside the second shielding layer.

2. The new energy voltage-resistant aluminum alloy cable according to claim 1, characterized in that: The surface of the buffer layer close to the support core includes a fitting surface and a separating surface. There are two separating surfaces and they are symmetrically connected to opposite sides of the fitting surface. The fitting surface fits with the outer surface of the support core, and the separating surface is separated from the support core. The buffer cavity is formed by the space between the separating surface and the outer surface of the support core.

3. The new energy voltage-resistant aluminum alloy cable according to claim 1, wherein: The cable core unit further includes an insulating layer and a cable core. The insulating layer is arranged outside the cable core, and the first shielding layer is arranged outside the insulating layer.

4. The new energy voltage-resistant aluminum alloy cable according to claim 3, characterized in that: The cable core is composed of a plurality of conductive metal wires, and the conductive metal wires are made of an aluminum alloy material.

5. The new energy voltage-resistant aluminum alloy cable according to claim 1, characterized in that: Both the first shielding layer and the second shielding layer are copper braided nets.

6. The new energy pressure-resistant aluminum alloy cable according to claim 1, characterized in that: Both the inner sheath and the outer sheath are made of a low-smoke and halogen-free polyolefin material.

7. The new energy voltage-resistant aluminum alloy cable according to claim 3, characterized in that: The insulating layer is made of a cross-linked polyethylene material.

8. The new energy voltage-resistant aluminum alloy cable according to claim 1, wherein: The new energy voltage-resistant aluminum alloy cable further includes an armor layer and a wear-resistant layer. The armor layer is arranged outside the outer sheath, and the wear-resistant layer is arranged outside the armor layer.

9. The new energy voltage-resistant aluminum alloy cable according to claim 8, characterized in that: The wear-resistant layer is made of thermoplastic polyurethane rubber.

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