Flame-retardant AC charging gun cable

Abstract

The utility model discloses a flame-retardant AC charging gun cable, which comprises a cable core and an outer sheath wrapping the cable core, and is characterized in that the cable core comprises a cable conductor, a signal line assembly and a control line assembly; and an aluminum hydroxide flame-retardant coating layer is arranged in the outer sheath. The cable is reasonable in structural design, and has the following beneficial effects that the aluminum hydroxide flame-retardant coating layer is arranged in the outer sheath, when high-temperature flame occurs, aluminum hydroxide can generate decomposition reaction and absorb a large amount of heat, and based on the heat balance principle, the surrounding temperature of the cable can be obviously reduced, flame combustion can be effectively inhibited, and the fire risk can be reduced; rescue time is won, and property loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a flame-retardant AC charging gun cable. Background Technology

[0002] With increasing environmental awareness and adjustments to the energy structure, new energy vehicles, especially electric vehicles, have experienced rapid development. Electric vehicles require charging stations and charging cables, leading to a continuous increase in demand for charging cables and placing higher requirements on their performance and quality.

[0003] With the rapid growth in the number of new energy vehicles, the market demand for charging gun cables is also increasing. However, worryingly, vehicle fires and charging station fires occur frequently. In such situations, flame-retardant AC charging gun cables play a crucial role. As a key channel connecting the vehicle and the charging station's power supply system, ordinary cables can become pathways for flames to spread, causing the fire to escalate further. However, flame-retardant AC charging gun cables, due to their flame-retardant properties, can effectively slow the spread of flames, buying valuable time to stop the fire and reduce property damage. Utility Model Content

[0004] The purpose of this utility model is to provide a flame-retardant AC charging gun cable, which improves the flame-retardant performance of the cable, effectively prevents the spread of flames during the charging process, ensures the safety of the charging process of new energy vehicles, and minimizes property losses caused by fire accidents.

[0005] To achieve the above objectives, the present invention provides a flame-retardant AC charging gun cable, comprising a cable core and an outer sheath enclosing the cable core. The cable core includes a cable conductor, a signal line assembly, and a control line assembly. The outer sheath is provided with an aluminum hydroxide flame-retardant coating layer.

[0006] The cable conductors are three in number; the three cable conductors are symmetrically arranged at the center of the cable core, forming a triangular shape.

[0007] The cable conductor is also provided with a conductor insulation layer, which is wrapped around the outer layer of the cable conductor; the cable conductor is made of stranded monofilaments of the sixth type of soft conductor in GB / T 3956 standard, and the conductor insulation layer is an ethylene propylene rubber layer;

[0008] The signal line assembly and the control line assembly are disposed between the cable conductor and the outer sheath;

[0009] The signal line assembly includes a signal wire core and a signal line insulation layer that wraps around the signal wire core; the signal wire core is made of stranded monofilaments of the sixth type of soft conductor in GB / T 3956 standard, and the signal line insulation layer is an ethylene propylene rubber layer;

[0010] The control wire assembly includes a control wire core and a control wire insulation layer that wraps around the control wire core; the control wire core is made of stranded monofilaments of the sixth type of soft conductor in GB / T 3956 standard, and the control wire insulation layer is an ethylene propylene rubber layer.

[0011] Furthermore, the cable core also includes a filler material, which is disposed in the gaps between the wires in the cable core for filling and fixing. The filler material is fiberglass rope.

[0012] Furthermore, the outer sheath is provided with two layers of aluminum hydroxide flame retardant coating, namely a first aluminum hydroxide flame retardant coating and a second aluminum hydroxide flame retardant coating.

[0013] Furthermore, the outer sheath has a structure consisting of, from the inside out, a first aluminum hydroxide flame-retardant coating layer, a wrapping and fixing layer, an inner sheath, a second aluminum hydroxide flame-retardant coating layer, and an outer sheath, with the outer layer sequentially wrapping around the inner layer.

[0014] Furthermore, the wrapping and fixing layer is a dense fiberglass tape wrapping tape, and the inner sheath and outer sheath are TPU sheaths.

[0015] In summary, the device structure of this utility model is reasonably designed, and the application of its technical solution has the following beneficial effects: Regarding the flame-retardant performance of the flame-retardant AC charging gun cable, due to the presence of an aluminum hydroxide flame-retardant coating in the outer sheath, the aluminum hydroxide decomposes upon exposure to high-temperature flames, absorbing a large amount of heat. Based on the principle of heat balance, this significantly reduces the temperature around the cable, effectively suppressing flame combustion. Ordinary cable insulation and sheath layers are easily ignited under flames, becoming channels for flame spread. However, the cable of this utility model, thanks to the material properties of its aluminum hydroxide flame-retardant coating, can greatly prevent the spread of flames along the cable, significantly reducing fire risk, buying time for rescue, and minimizing property damage. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the flame-retardant AC charging gun cable of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1-Cable conductor; 2-Signal line assembly; 3-Control line assembly; 4-Filling material; 5-First aluminum hydroxide flame retardant coating layer; 6-Wrapping and fixing layer; 7-Inner sheath; 8-Second aluminum hydroxide flame retardant coating layer; 9-Outer sheath. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0019] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left front side is designated as "front," the observer's right rear side as "rear," the observer's left rear side as "left," the observer's right front side as "right," the observer's top as "up," and the observer's bottom as "down." It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" in this text indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0020] Existing flame-retardant cables mostly employ flame-retardant insulation and flame-retardant sheaths to achieve a flame-retardant effect, or use liquid cooling and other methods to achieve the same effect. This invention relates to a flame-retardant AC charging gun cable, characterized by its highly efficient flame-retardant effect. It is filled with fiberglass filler rope and wrapped with dense fiberglass tape. During filling, aluminum hydroxide flame-retardant coating is added and applied to the outer surface after filling, providing excellent insulation.

[0021] See Figure 1 The present invention provides a flame-retardant AC charging gun cable, including a cable core and an outer sheath covering the cable core. The cable core includes a cable conductor 1, a signal line assembly 2, and a control line assembly 3. The outer sheath is provided with an aluminum hydroxide flame-retardant coating layer.

[0022] The outer sheath contains an aluminum hydroxide flame-retardant coating. When aluminum hydroxide is heated and decomposes, it absorbs a large amount of heat and releases water of crystallization, thereby reducing the temperature of the material surface. The aluminum oxide produced by the decomposition can form a dense protective film, which plays a role in heat insulation and oxygen isolation, preventing the spread of flames.

[0023] In a preferred embodiment of this utility model, the number of cable conductors 1 is 3; the three cable conductors 1 are symmetrically arranged at the center of the cable core, forming a triangular shape. Specifically, the cable conductors 1 are also provided with a conductor insulation layer, which wraps around the outer layer of the cable conductors 1; the cable conductors 1 are made of stranded monofilaments of the sixth type of soft conductor in GB / T 3956 standard, and the conductor insulation layer is an ethylene propylene rubber layer.

[0024] Specifically, signal line assembly 2 and control line assembly 3 are disposed between cable conductor 1 and outer sheath. Specifically, signal line assembly 2 includes a signal wire core and a signal wire insulation layer enclosing the signal wire core; the signal wire core is made of stranded monofilaments of the sixth type of soft conductor as specified in GB / T 3956 standard, and the signal wire insulation layer is an ethylene propylene rubber layer. Specifically, control line assembly 3 includes a control wire core and a control wire insulation layer enclosing the control wire core; the control wire core is made of stranded monofilaments of the sixth type of soft conductor as specified in GB / T 3956 standard, and the control wire insulation layer is an ethylene propylene rubber layer.

[0025] The cable conductors 1, signal cores, and control cores use the sixth type of soft conductor monofilament in GB / T 3956 standard. These monofilaments are regularly twisted into a single strand, and then each strand is re-twisted, resulting in excellent bending performance, no loosening, more stable production in subsequent processes, and superior products.

[0026] The insulation layers of the cable conductors, signal lines, and control lines are made of high-quality ethylene propylene rubber. This material has excellent insulation and mechanical properties, as well as corrosion resistance, cold resistance, high temperature resistance, oil resistance, and water resistance. As a type of rubber, it also has good flexibility and is easy to bend.

[0027] Specifically, the cable core also includes filler 4, which is placed in the gaps between the cores to fill and fix them. Filler 4 is fiberglass rope. The filler 4 is made of fiberglass rope, and the main material of fiberglass rope is silicon dioxide, which has good flame retardant properties.

[0028] Specifically, the outer sheath has two layers of aluminum hydroxide flame-retardant coating, namely the first aluminum hydroxide flame-retardant coating layer 5 and the second aluminum hydroxide flame-retardant coating layer 8. Specifically, the structure of the outer sheath, from the inside out, consists of the first aluminum hydroxide flame-retardant coating layer 5, the wrapping and fixing layer 6, the inner sheath 7, the second aluminum hydroxide flame-retardant coating layer 8, and the outer sheath 9, with the outer layer wrapping around the inner layer. Specifically, the wrapping and fixing layer 6 is a dense fiberglass tape wrapping tape, and the inner sheath 7 and the outer sheath 9 are TPU sheaths.

[0029] The wrapping and fixing layer 6 uses dense fiberglass tape. Compared with ordinary fiberglass tape, dense fiberglass tape has a higher fiberglass (silica) capacity per unit area and stronger flame retardant ability.

[0030] The inner sheath 7 and the outer sheath 9 are made of flame-retardant TPU material, which has a tensile strength of up to 20 N / mm² and an elongation of up to 300%, and also has wear-resistant and aging-resistant properties.

[0031] This utility model relates to a flame-retardant AC charging gun cable, characterized by its highly efficient flame-retardant effect. It is filled with fiberglass filler rope and wrapped with dense fiberglass tape. During filling, aluminum hydroxide flame-retardant coating is applied to the outer surface after filling, providing excellent insulation. Simultaneously, to meet standard requirements and achieve flame retardancy, the outer sheath consists of an inner sheath 7 and an outer sheath 9, which undergo two extrusion processes during production. The aluminum hydroxide flame-retardant coating is applied in between, resulting in even better flame retardant performance.

[0032] Of course, it is also possible to add aluminum hydroxide flame retardant coating powder during filling and apply it to the inside of the filler wrapping.

[0033] The advantages of this utility model are as follows: 1. The filler 4 and the wrapping and fixing layer 6 are respectively made of fiberglass filler rope and dense fiberglass tape, which have good flame retardant effect; 2. During the cabling process, aluminum hydroxide flame retardant coating is added for powder coating, which has a flame retardant effect; 3. Under the premise of meeting the standard thickness, the outer sheath is set with an inner sheath 7 and an outer sheath 9, which are extruded separately. The aluminum hydroxide flame retardant coating is powder coated in the middle process, which not only does not increase the cost, but also has a flame retardant effect, thus achieving a good flame retardant effect.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A flame retardant alternating current charging gun cable comprising a core and an outer jacket surrounding the core, characterized in that: The cable core comprises cable conductors, a signal wire assembly and a control wire assembly; the outer sheath is provided with an aluminum hydroxide flame-retardant coating layer; The number of the cable conductors is 3; the three cable conductors are symmetrically arranged at the center of the cable core and form a triangle shape. The cable conductor is further provided with a conductor insulation layer, which is wrapped outside the cable conductor; the cable conductor is the sixth soft conductor monofilament twisted according to GB / T 3956 standard, and the conductor insulation layer is an ethylene-propylene rubber layer; The signal wire assembly and the control wire assembly are arranged between the cable conductor and the outer sheath; The signal wire assembly comprises a signal wire core and a signal wire insulation layer wrapped around the signal wire core; the signal wire core is the sixth soft conductor monofilament twisted according to GB / T 3956 standard, and the signal wire insulation layer is an ethylene-propylene rubber layer; The control wire assembly comprises a control wire core and a control wire insulation layer wrapped around the control wire core; the control wire core is the sixth soft conductor monofilament twisted according to GB / T 3956 standard, and the control wire insulation layer is an ethylene-propylene rubber layer.

2. The flame resistant AC charging gun cable of claim 1, wherein: The cable core further comprises a filler, which is arranged to fill and fix the gap between each wire core in the cable core; the filler is a glass fiber rope.

3. The flame resistant AC charging gun cable of claim 2, wherein: The outer sheath is provided with two layers of aluminum hydroxide flame-retardant coating layers, namely a first aluminum hydroxide flame-retardant coating layer and a second aluminum hydroxide flame-retardant coating layer.

4. The flame resistant AC charging gun cable of claim 3, wherein: The structure of the outer sheath comprises, from inside to outside, the first aluminum hydroxide flame-retardant coating layer, a wrapping fixing layer, an inner sheath, the second aluminum hydroxide flame-retardant coating layer and an outer sheath, which wraps the inner sheath.

5. The flame resistant AC charging gun cable of claim 4, wherein: The wrapping fixing layer is a dense glass fiber tape wrapping tape, and the inner sheath and the outer sheath are TPU sheaths.

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