An environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable

Abstract

This utility model discloses an environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable, belonging to the field of cable technology. It includes a conductor, an insulation layer, a steel wire layer, a control layer, a control insulation layer, a filler layer, a shielding layer, a fireproof layer, and a sheath layer. The conductor is made of multi-strand copper wire, and the insulation layer is made of silicone rubber. The steel wire layer is located at the center of the cable. The control layer includes signal lines and control lines, and the control insulation layer is made of fluoroplastic. The filler layer is made of fiberglass rope. The shielding layer is located outside the filler layer. A fireproof layer, made of ceramicized silicone rubber, is located outside the shielding layer. The sheath layer is made of polyolefin. This utility model, by providing a filler layer outside the insulation layer and the control insulation layer, using fiberglass rope, eliminates internal voids that easily form in traditional cable cores. This filler layer prevents flame spread, fixes the position of each core wire, and improves strength. It also enhances heat resistance and slows heat conduction to the core wires.

Description

Technical Field

[0001] This utility model relates to an environmentally friendly, fireproof, and interference-resistant AC charging pile cable, belonging to the field of cable technology. Background Technology

[0002] With the large-scale promotion of electric vehicles, AC charging stations have become an important infrastructure in public parking lots, residential communities, and commercial centers. Charging stations transmit power from the grid to vehicles via cables, requiring the cables to have high current-carrying capacity, good flexible laying performance, and reliable protection levels to adapt to various indoor and outdoor environments.

[0003] Traditional cables have insufficient fire resistance in their sheaths, making them prone to spontaneous combustion and unable to meet the requirements of high-safety-level environments. They also have weak electromagnetic interference resistance; single-layer shielding is susceptible to signal interference during high-power charging and discharging and in strong near-field electromagnetic environments, affecting the data communication and control accuracy of charging piles. Furthermore, they cause some environmental pollution.

[0004] Therefore, there is an urgent need for an environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable to meet the safety, reliability, and environmental protection requirements of cables. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an environmentally friendly fireproof and interference-resistant AC charging pile cable, which solves the problems of insufficient fire resistance, weak electromagnetic interference resistance, and certain environmental pollution caused by traditional cables.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: an environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable, comprising...

[0007] Conductor, insulating layer

[0008] It also includes a steel wire layer, a control layer, a control insulation layer, a filler layer, a shielding layer, a fireproof layer, and a sheath layer.

[0009] The conductor is provided with, in sequence, the insulation layer, the steel wire layer, the control layer, the control insulation layer, the filler layer, the shielding layer, the fireproof layer, and the sheath layer.

[0010] The conductor is made of multi-strand copper wire and has multiple conductors. An insulation layer made of silicone rubber is provided on the outside of the conductor. The steel wire layer is provided on the outside of the insulation layer and located at the center of the cable. A control layer is also provided on the outside of the insulation layer. The control layer includes signal lines and control lines. The signal lines are symmetrically arranged on the outside of the insulation layer from left to right, and the control lines are symmetrically arranged on the outside of the insulation layer from top to bottom. The signal lines and control lines can transmit signals. A control insulation layer made of fluoroplastic is provided on the outside of both the signal lines and the control lines.

[0011] The filling layer is disposed outside the insulating layer and the control insulating layer, and the filling layer is made of fiberglass rope; the shielding layer is disposed outside the filling layer, and the shielding layer is made of aluminum foil and tin-plated copper wire double-layer braid; a fireproof layer is disposed outside the shielding layer, and the fireproof layer is made of ceramicized silicone rubber; the sheath layer is disposed outside the fireproof layer, and the sheath layer is made of polyolefin.

[0012] Preferably, the conductor is further wound with bulletproof wire, and the surface of the conductor is not oxidized.

[0013] Preferably, the thickness of the control insulation layer is between 0.8 mm and 1.0 mm.

[0014] Preferably, the signal line and the control line are made of the sixth type of soft conductor monofilament in GB / T 3956 standard, with a wire diameter between 0.150-0.196mm.

[0015] Preferably, the thickness of the insulating layer is 0.5mm-0.6mm.

[0016] Preferably, the filling layer is disposed on the outside of the insulating layer and the control insulating layer by wrapping around them, and only one filling layer is disposed, with a circular cross-section.

[0017] Preferably, the fireproof layer is disposed on the outside of the shielding layer by wrapping.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a filling layer made of fiberglass rope outside the insulation layer and control insulation layer. Traditional cable cores are prone to voids; by using fiberglass rope as a filling layer, internal gaps are eliminated, preventing flame spread and fixing the positions of each core wire, thus increasing strength. It also improves heat resistance and slows heat conduction to the core wires. A fireproof layer is provided outside the shielding layer. This fireproof layer forms a dense ceramic protective layer at 1500℃, achieving a fire resistance of ≥90 minutes, blocking heat conduction, protecting the internal structure, and delaying temperature rise.

[0020] This invention provides a shielding layer on the outside of the filling layer. The shielding layer is made of aluminum foil and tinned copper wire, which can achieve wide-bandwidth and high / low-frequency dual shielding, significantly suppress EMI, protect signal and control lines, and reduce the impact of external electromagnetic waves on peripheral equipment.

[0021] This invention utilizes a polyolefin sheath layer, specifically a low-smoke halogen-free polyolefin. When the sheath layer burns, it releases low amounts of smoke and contains almost no toxic halogens, complying with environmental protection and safety standards. This improves indoor environmental safety and reduces subsequent cleaning costs.

[0022] This invention features a multi-strand conductor, which enhances flexibility and bending fatigue life, ensuring no arcing during high-current transmission, and improving conductivity while reducing energy loss. A steel wire layer is also incorporated at the cable's center, significantly improving tensile and compressive strength, ensuring mechanical safety during installation and maintenance, maintaining cross-sectional shape, preventing internal voids, and extending lifespan. A control insulation layer is located outside the control layer, providing high-temperature flame retardancy and excellent electrical isolation, ensuring stable signal and control data transmission, reducing maintenance frequency, and improving system reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] In the diagram: 1-Conductor, 2-Insulation layer, 3-Steel wire layer, 4-Signal line, 13-Signal line, 5-Control insulation layer, 14-Control insulation layer, 6-Control line, 8-Control line, 7-Control insulation layer, 9-Control insulation layer, 10-Filling layer, 11-Shielding layer, 12-Shielding layer, 15-Fireproof layer, 16-Sheath layer. Detailed Implementation

[0025] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1

[0026] like Figure 1 As shown, an environmentally friendly fireproof and interference-resistant AC charging pile cable includes a conductor 1, an insulation layer 2, a steel wire layer 3, a control layer, a control insulation layer, a filler layer 10, a shielding layer 11, a shielding layer 12, a fireproof layer 15, and a sheath layer 16.

[0027] Reference Figure 1 The conductor 1 is provided with an insulating layer 2, a filling layer 10, a shielding layer 11, a shielding layer 12, a fireproof layer 15, and a sheath layer 16 in sequence on its outer side.

[0028] An insulating layer 2 is provided on the outer side of conductor 1. Conductor 1 is made of multi-strand copper wire. Multiple conductors 1 are provided. There are four conductors 1, each made of multi-strand copper wire with the same number of wires. An insulating layer 2 is provided on the outer side of each multi-strand copper wire. In this embodiment, there are four insulating layers 2, each covering the outer side of a different conductor 1. The insulating layer 2 on the outer side of each conductor 1 is connected to the outer insulating layers 2 of two of the remaining three conductors 1. That is, the conductors 1 are positioned at the four vertices of a square, and the outer insulating layers 2 of adjacent conductors 1 are in contact with each other.

[0029] In this embodiment, the insulating layer 2 covers the outside of the conductor 1. The insulating layer 2 is made of high-temperature resistant silicone rubber, with a thickness of 0.8mm-1.0mm and an extrusion temperature of 170-185℃. It is tightly extruded, with no visible defects such as pores or pinholes in the cross-section, and the surface of the insulating layer 2 is smooth. It has good high-temperature resistance and flame retardant properties, effectively preventing short circuits and leakage between conductors 1.

[0030] The steel wire layer 3 is disposed on the outside of the insulation layer 2. In this embodiment, the steel wire layer 3 is located at the center of the cable. The steel wire layer 3 is made of 0.3mm steel wire braided together, which can improve the tensile strength and mechanical strength of the cable and prevent the cable from breaking due to external forces during installation or use.

[0031] A control layer is also provided outside the insulation layer 2. The control layer includes signal lines 4, 13, 6, and 8. Signal lines 4, 13, 6, and 8 are made of stranded monofilaments of a sixth type of soft conductor, with the monofilament diameter controlled between 0.150 and 0.196 mm. Signal lines 4 and 13 can transmit signals, while control lines 6 and 8 can transmit control signals. In this embodiment, signal line 4 is located at the right end of the conductor's horizontal centerline, contacting the adjacent insulation layer 2; signal line 13 is located at the left end of the conductor's horizontal centerline, contacting the adjacent insulation layer 2; control line 6 is located at the lower end of the conductor's vertical centerline, contacting the adjacent insulation layer 2; and control line 8 is located at the upper end of the conductor's vertical centerline, contacting the adjacent insulation layer 2.

[0032] A control insulation layer 5 is provided on the outer side of signal lines 4, 13, 6, and 8. The control insulation layer 5 is made of fluoroplastic and is applied to the outside of signal lines 4, 13, 6, and 8 by extrusion at a speed of 21 m / min, resulting in an extruded thickness of 0.5 mm-0.6 mm. This signal line insulation layer exhibits good high-temperature resistance and flame retardant properties, effectively preventing short circuits and signal interference between signal line conductors. In this embodiment, control insulation layer 5 is located on the outer side of signal line 4, control insulation layer 14 on the outer side of signal line 13, control insulation layer 5 on the outer side of control line 6, and control insulation layer 8.

[0033] In this embodiment, the filler layer 10 is disposed outside the insulating layer 2 and the control insulating layer 5, and the filler layer 10 is disposed in a wrapping manner. Only one filler layer 10 is provided, and the cross-section of the filler layer 10 is a ring.

[0034] The filling layer 10 uses fiberglass rope, which is wrapped with two layers of dense fiberglass tape. The dense fiberglass tape has a higher fiberglass content per unit area and stronger flame retardant ability compared with ordinary fiberglass tape.

[0035] A shielding layer is provided on the outside of the filling layer 10. The shielding layer adopts a double-layer structure of aluminum foil and tinned copper wire to effectively shield electromagnetic interference. In this embodiment, the shielding layer 11 is made of aluminum foil, and the shielding layer 12 is made of tinned copper wire.

[0036] A fireproof layer 15 is provided on the outside of the shielding layer 12. The fireproof layer 15 is made of ceramicized silicone rubber and is set by overlapping and wrapping. The fireproof layer 15 can form a ceramicized protective layer at high temperature to prevent the spread of flames.

[0037] The sheath layer 16 is located on the outside of the fireproof layer and is made of polyolefin, specifically low-smoke halogen-free polyolefin. The thickness of the sheath layer 16 is 1.8mm-2.0mm. The surface of the sheath layer 16 is well plasticized, with a good appearance and uniform color, and should be free from defects such as dents, scorching, sharp edges, holes, joints, bamboo-like shapes, particles, pores, and lumps. It has good high-temperature resistance, flame retardancy, and corrosion resistance, effectively protecting the internal structure of the cable from external environmental erosion, while improving the overall fire resistance of the cable.

[0038] In this embodiment, an insulating layer 2 is covered on the outside of the conductor 1. After multiple strands of copper wire are twisted together, they are tightly wrapped with a silicone rubber insulating layer through an extrusion process, which can ensure the electrical performance of the core wire and its heat resistance and flame retardant properties.

[0039] The four conductors are positioned at the four vertices of a square, with the outer insulation layers 2 of adjacent conductors 1 in contact with each other. A steel wire layer is located at the very center of the cable, enabling the cable to withstand external tension and impact. The filler layer 10 tightly wraps around the conductor 1, control layer, and steel wire layer 3 in the center of the cable, fixing them into a whole, eliminating gaps and improving flame retardant performance.

[0040] Shielding layers 11 and 12 are made of aluminum foil and tin-plated copper wire, respectively, providing high-coverage electromagnetic shielding. Fire-resistant layer 15 covers the shielding layers in a spiral wrapping manner. Fire-resistant layer 15 forms a dense ceramic protective layer at high temperatures, extending the cable's survival time in a fire. Sheath layer 16 covers fire-resistant layer 15 through extrusion, providing external protection.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable, comprising: Conductor, insulating layer Its features are: It also includes a steel wire layer, a control layer, a control insulation layer, a filler layer, a shielding layer, a fireproof layer, and a sheath layer. The conductor is provided with, in sequence, the insulation layer, the steel wire layer, the control layer, the control insulation layer, the filler layer, the shielding layer, the fireproof layer, and the sheath layer. The conductor is made of multi-strand copper wire and has multiple conductors. An insulation layer made of silicone rubber is provided on the outside of the conductor. The steel wire layer is provided on the outside of the insulation layer and located at the center of the cable. A control layer is also provided on the outside of the insulation layer. The control layer includes signal lines and control lines. The signal lines are symmetrically arranged on the outside of the insulation layer from left to right, and the control lines are symmetrically arranged on the outside of the insulation layer from top to bottom. The signal lines and control lines can transmit signals. A control insulation layer made of fluoroplastic is provided on the outside of both the signal lines and the control lines. The filling layer is disposed outside the insulating layer and the control insulating layer, and the filling layer is made of fiberglass rope; the shielding layer is disposed outside the filling layer, and the shielding layer is made of aluminum foil and tin-plated copper wire double-layer braid; a fireproof layer is disposed outside the shielding layer, and the fireproof layer is made of ceramicized silicone rubber; the sheath layer is disposed outside the fireproof layer, and the sheath layer is made of polyolefin.

2. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The conductor is also wrapped with bulletproof wire, and the surface of the conductor is not oxidized.

3. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The thickness of the control insulation layer is between 0.8 mm and 1.0 mm.

4. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The signal lines and control lines are made of the sixth type of soft conductor monofilament in GB / T 3956 standard, with a wire diameter between 0.150-0.196mm.

5. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The thickness of the insulating layer is 0.5mm-0.6mm.

6. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The filling layer is disposed on the outside of the insulating layer and the control insulating layer by wrapping. Only one filling layer is provided, and its cross-section is a ring.

7. The environmentally friendly, fire-resistant, and interference-resistant AC charging pile cable according to claim 1, characterized in that: The fireproof layer is applied to the outside of the shielding layer by wrapping it around.

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