High-flame-retardant charging pile cable

Abstract

The utility model relates to the charging pile cable field, and discloses a high flame retardation charging pile cable comprising a filling layer, the outer side of the filling layer is fixedly connected with a nylon braid layer, the outer side of the nylon braid layer is fixedly connected with a tensile layer, and the inner periphery of the filling layer is uniformly and fixedly connected with a plurality of silicate fiber layers. The inner side of each silicate fiber layer is fixedly connected with a fitting protection layer, the inner side of each fitting protection layer is fixedly connected with a protection copper sleeve, the inner side of each protection copper sleeve is fixedly connected with a transmission wire, and the inner side of each fitting protection layer is evenly and fixedly connected with a plurality of flame-retardant rubber rings from top to bottom. According to the utility model, spontaneous combustion caused by overhigh temperature of the cable conductors is avoided, the conductors are separated, the spontaneous combustion of the conductors does not influence other conductors, the loss cost is reduced, and heat conduction paths are effectively reduced, so that the heat insulation performance of the cable is improved, and the heat insulation capability of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the field of charging pile cables, in particular to a highly flame-retardant charging pile cable. Background Art

[0002] A charging pile cable is a cable used to transmit electric energy between a charging pile and an electric vehicle. The vehicle is charged through the cable. The amount of electricity transmitted by the cable is relatively large, and the cable is generally relatively thick to ensure the safety and reliability of the charging process.

[0003] After retrieval, the charging pile cable with the publication number CN213400680U includes a cable. The cable includes a vacuum heat insulation layer, a heat conduction layer and a main body. There are four sun protection and high temperature resistance layers on the surface of the vacuum heat insulation layer. The sun protection and high temperature resistance layers are all made of a mixture of magnesium oxide and zinc oxide. There are intervals between the sun protection and high temperature resistance layers. Six contact lines are arranged inside the vacuum heat insulation layer. The contact lines are all connected to the vacuum heat insulation layer and the heat conduction layer. The vacuum heat insulation layer internally wraps the heat conduction layer, and the inner side of the heat conduction layer wraps the main body. The main body is divided into a heat-resistant protection layer, a filling layer and a cable; the charging pile cable of the utility model uses the sun protection and high temperature resistance layer to ensure the high temperature resistance and sun protection ability of the cable, ensure the appearance of the cable after long-term use, reduce the heat transfer through the vacuum heat insulation layer, ensure the internal temperature data of the cable, conduct heat through the contact lines for heat transmission, absorb the heat of the cable through the heat conduction layer to prevent the cable temperature from being too high;

[0004] Based on the above patent, the sun protection and high temperature resistance layer ensures the high temperature resistance and sun protection ability of the cable, ensures the appearance of the cable after long-term use, reduces the heat transfer through the vacuum heat insulation layer, ensures the internal temperature data of the cable, conducts heat through the contact lines for heat transmission, absorbs the heat of the cable through the heat conduction layer to prevent the cable temperature from being too high, protects the cable through the heat-resistant protection layer to prevent cable damage due to overheating, fills the cable through the filling layer to prevent cable damage when bent, but after long-term use and the simultaneous use of multiple cables, the current passing through the cable may cause internal cable combustion due to overheating of the external environment, resulting in damage. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a highly flame-retardant charging pile cable that separates flame retardancy and heat insulation.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A highly flame-retardant charging pile cable includes a filling layer. The outer side of the filling layer is fixedly connected with a nylon braided layer. The outer side of the nylon braided layer is fixedly connected with a tensile layer. A plurality of silicate fiber layers are uniformly and fixedly connected to the inner circumference of the filling layer. The inner sides of the silicate fiber layers are all fixedly connected with a fitting protective layer. The inner side of the fitting protective layer is fixedly connected with a protective copper sleeve. The inner side of the protective copper sleeve is fixedly connected with a transmission wire. A plurality of flame-retardant rubber rings are uniformly and fixedly connected to the inner side of the fitting protective layer from top to bottom. An insulation protection assembly is installed outside the tensile layer.

[0008] Further, the insulation protection assembly includes an insulation layer located outside the tensile layer. The insulation layer has a rigid foam closed-cell structure and is not easy to conduct heat. An ultraviolet reflection layer is coated on the outer side of the insulation layer.

[0009] Further, the insulation layer is made of polyurethane foam.

[0010] Further, the inner sides of the flame-retardant rubber rings are respectively correspondingly attached to the outside of the protective copper sleeve.

[0011] Further, the filling layer is made of aluminum carbonate colloid.

[0012] Further, the flame-retardant rubber ring is made of boron nitride colloid.

[0013] Further, the tensile layer is a nitrile rubber layer.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the flame retardancy of the cable is achieved through the filling layer, silicate fiber layer, fitting protective layer, transmission wire, protective copper sleeve, and flame-retardant rubber ring, avoiding spontaneous combustion caused by excessive temperature of the cable wire. Moreover, the multiple wires are separated, so the spontaneous combustion of one wire will not affect other wires, reducing the loss cost.

[0016] 2. In the utility model, the cable is insulated through the ultraviolet reflection layer and the insulation layer. The internal bubbles are isolated from each other and are not easy to conduct heat, effectively reducing the heat conduction path, thereby improving its insulation performance and the heat insulation ability of the cable. Description of the Drawings

[0017] Figure 1 is a cross-sectional view of a highly flame-retardant charging pile cable proposed by the utility model;

[0018] Figure 2 is a layered sectional view of a highly flame-retardant charging pile cable proposed by the utility model;

[0019] Figure 3 is an internal view of the fitting protective layer of a highly flame-retardant charging pile cable proposed by the utility model.

[0020] Legend Explanation:

[0021] 1. Filling layer; 2. Silicate fiber layer; 3. Fitting protective layer; 4. Transmission wire; 5. Protective copper sleeve; 6. Nylon braided layer; 7. Tensile layer; 8. UV reflection layer; 9. Heat insulation layer; 10. Flame retardant rubber ring. Specific Embodiment

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Refer to Figure 1 and Figure 2 An embodiment provided by the present invention: A highly flame-retardant charging pile cable includes a filling layer 1. A nylon braided layer 6 is fixedly connected to the outside of the filling layer 1. A tensile layer 7 is fixedly connected to the outside of the nylon braided layer 6. A plurality of silicate fiber layers 2 are uniformly and fixedly connected to the inner circumference of the filling layer 1. A fitting protective layer 3 is fixedly connected to the inner side of each silicate fiber layer 2. A protective copper sleeve 5 is fixedly connected to the inner side of the fitting protective layer 3. A transmission wire 4 is fixedly connected to the inner side of the protective copper sleeve 5. A plurality of flame retardant rubber rings 10 are uniformly and fixedly connected to the inner side of the fitting protective layer 3 from top to bottom. A heat insulation protection component is installed outside the tensile layer 7. The inner sides of the flame retardant rubber rings 10 are respectively attached to the outside of the protective copper sleeve 5. The filling layer 1 is made of aluminum carbonate colloid. The flame retardant rubber ring 10 is made of boron nitride colloid. The tensile layer 7 is a nitrile rubber layer;

[0024] When the current transmitted by the internal transmission wire 4 is too large and the temperature outside it continues to increase, the current may break through the outside of the protective copper sleeve 5, causing the fitting protective layer 3 to catch fire. As the inner side of the fitting protective layer 3 burns, the open flame contacts the flame retardant rubber ring 10, releasing nitrogen and diluting the oxygen concentration, thereby suppressing the combustion of the flame. At the same time, the silicate fiber layer 2 forms independent spaces between the wires, and the aluminum carbonate in the filling layer 1 can decompose at high temperatures to release carbon dioxide and water vapor, forming a protective layer to isolate the flame, having a good flame retardant effect, making the segmentation effect more distinct, avoiding spontaneous combustion caused by excessive temperature of the cable wires, and separating multiple wires so that the spontaneous combustion of one wire will not affect other wires, reducing the loss cost.

[0025] Refer to Figure 1 , Figure 2 and Figure 3, the heat insulation protection component includes a heat insulation layer 9 located outside the tensile layer 7. The heat insulation layer 9 has a rigid foam closed-cell structure and is not easy to conduct heat. The outer side of the heat insulation layer 9 is coated with an ultraviolet reflection layer 8, and the heat insulation layer 9 is made of polyurethane foam;

[0026] External light directly contacts the surface of the cable. The ultraviolet rays in the sunlight are reflected outward by the ultraviolet reflection layer 8, avoiding damage to the heat insulation layer 9 by sunlight. The heat insulation layer 9 has a closed-cell structure, and the internal bubbles are isolated from each other and are not easy to conduct heat, effectively reducing the heat conduction path, thereby improving its heat insulation performance and the heat insulation ability of the cable. The internal bubbles are isolated from each other and are not easy to conduct heat, effectively reducing the heat conduction path, thereby improving its heat insulation performance and the heat insulation ability of the cable.

[0027] Working principle: When the current transmitted by the internal transmission wire 4 is too large, the temperature outside it continuously increases, and the current may penetrate the outside of the protective copper sleeve 5, causing the fitting protective layer 3 to burn. As the inner side of the fitting protective layer 3 burns, the open fire contacts the flame retardant rubber ring 10, thereby releasing nitrogen and diluting the oxygen concentration, thus inhibiting the combustion of the flame. At the same time, the silicate fiber layer 2 forms an independent space between each wire, and the aluminum carbonate in the filling layer 1 can decompose at high temperatures to release carbon dioxide and water vapor, forming a protective layer to isolate the flame, having a good flame retardant effect and making the segmentation effect more distinct. External light directly contacts the surface of the cable. The ultraviolet rays in the sunlight are reflected outward by the ultraviolet reflection layer 8, avoiding damage to the heat insulation layer 9 by sunlight. The heat insulation layer 9 has a closed-cell structure, and the internal bubbles are isolated from each other and are not easy to conduct heat, effectively reducing the heat conduction path, thereby improving its heat insulation performance and the heat insulation ability of the cable.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly flame-retardant charging pile cable, comprising a filling layer (1), characterized in that: The outer side of the filling layer (1) is fixedly connected to a nylon braided layer (6), the outer side of the nylon braided layer (6) is fixedly connected to a tensile layer (7), the inner side of the filling layer (1) is evenly fixedly connected to a plurality of silicate fiber layers (2), the inner side of each silicate fiber layer (2) is fixedly connected to a bonding protective layer (3), the inner side of the bonding protective layer (3) is fixedly connected to a protective copper sleeve (5), the inner side of the protective copper sleeve (5) is fixedly connected to a transmission conductor (4), the inner side of the bonding protective layer (3) is evenly fixedly connected to a plurality of flame-retardant rubber rings (10) from top to bottom, and a heat insulation protection component is installed on the outside of the tensile layer (7).

2. A highly flame-retardant charging pile cable according to claim 1, characterized in that: The heat insulation protection component comprises a heat insulation layer (9) located outside the tensile layer (7); the heat insulation layer (9) is a rigid foam closed-cell structure that is not easy to conduct heat; and the outer side of the heat insulation layer (9) is coated with an ultraviolet reflection layer (8).

3. A highly flame-retardant charging pile cable according to claim 2, characterized in that: The heat insulation layer (9) is made of polyurethane foam.

4. A highly flame-retardant charging pile cable according to claim 1, characterized in that: The inner sides of the flame-retardant rubber rings (10) are respectively correspondingly fitted to the outer sides of the protective copper sleeves (5).

5. A highly flame-retardant charging pile cable according to claim 1, characterized in that: The filling layer (1) is made of aluminum carbonate colloid.

6. A highly flame-retardant charging pile cable according to claim 1, characterized in that: The flame retardant rubber ring (10) is made of boron nitride colloid.

7. A highly flame-retardant charging pile cable according to claim 1, characterized in that: The tensile layer (7) is a nitrile rubber layer.

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