Charging pile cable

Abstract

The utility model discloses a charging pile cable, which relates to the field of charging cables, aims to solve the problems of short service life, poor wear resistance and poor torsion in the prior art, and adopts the technical scheme that the charging pile cable comprises a cable core, the cable core comprises a charging wire core, the charging wire core comprises a cooling pipe and a plurality of conductors, the conductors are arranged around the cooling pipe, an insulating layer is arranged outside the conductors, and the insulating layer is arranged outside the cooling pipe. The cable core further comprises a ground wire core, an auxiliary power supply wire core and a control wire core and is provided with a return pipe, and filling layers are filled between the wire cores in the cable core and between the wire cores and the return pipe. At least one of the two control wire cores is provided with a shielding layer. And a sheath is arranged outside the cable core. The charging wire core conductor adopts the aluminum alloy soft wire matched with the aramid yarn, the insulating layer adopts the polyether-ether-ketone, the filling adopts the ceramic fireproof filling rope, and the sheath adopts the polyurethane elastomer and nylon double-layer sheath, so that the cable has a quick charging function, and meanwhile, the cable has excellent performance of high strength, high twisting resistance, high wear resistance and rat and ant prevention.

Description

Technical Field

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

[0002] With the rapid growth in new energy vehicle sales, demand for charging stations is also increasing year-on-year. A typical fast charge to 80% of the rated capacity takes 2-3 hours, and the fastest takes 30 minutes. In the wire and cable industry, reducing charging time is often achieved by increasing the cable's conductor cross-sectional area. However, charging station cables typically use Category 5 or 6 round annealed copper, either metallized or unmetallized, resulting in heavy cables. Due to the frequent dragging and movement during use, increasing the conductor cross-sectional area to achieve high power and current carrying capacity would make the charging station cables unwieldy and unreliable. Furthermore, current charging station cables often suffer from shortcomings such as short service life, poor wear resistance, and poor torsional rigidity. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a charging pile cable that can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a charging pile cable, which adopts the technical solution of comprising a cable core, wherein the cable core comprises a charging core, and the charging core comprises a cooling tube and a conductor. There are multiple conductors, which are arranged around the cooling tube, and the conductor is provided with an insulating layer. The conductor is arranged around the cooling tube, so that the conductor can be cooled in time, thereby meeting the requirements of high-power and high-current charging. The coolant in the cooling tube adopts low-viscosity, high-specific heat capacity oil such as transformer oil, silicone oil or coolant. The cable core also comprises a ground core, an auxiliary power core and a control core, and is provided with a return pipe. A filling layer is filled between each core in the cable core and between the core and the return pipe. After the cable is connected to the gun head, the cooling tube and the return pipe are connected through the pipe inside the gun head. There are two control cores, at least one of which is provided with a shielding layer. The cable core is provided with a sheath.

[0005] As a preferred technical solution of the present invention, the conductor is a stranded wire of aged aluminum alloy monofilaments. Compared with copper cables, although the cable cross-section is increased, the overall cable weight is lighter.

[0006] As a preferred technical solution of the present invention, the conductor is a stranded wire composed of aged aluminum alloy monofilaments and aramid yarn. Aramid yarn offers high tensile strength, high tension, low elongation, high modulus, high breaking strength, high temperature resistance, and flame retardancy. Its strength is 5-6 times that of steel wire, its toughness is twice that of steel wire, and its modulus is 2-3 times that of steel wire or fiberglass, yet its weight is only about 1 / 5 that of steel wire. It does not decompose or melt at temperatures of 560°C. The addition of aramid yarn to the conductor increases its tensile strength.

[0007] As a preferred technical solution of this utility model, the insulation layer is made of polyetheretherketone (PEEK). PEEK has extremely high heat resistance, with a glass transition temperature as high as 143°C and a continuous operating temperature of up to 260°C. It can maintain excellent mechanical and electrical properties even in high-temperature environments. Furthermore, PEEK offers excellent mechanical strength and rigidity, as well as good toughness and impact resistance. Furthermore, PEEK has excellent chemical stability, flame retardancy, and radiation resistance.

[0008] As a preferred technical solution of the present invention, the filling layer is a ceramic fireproof and fire-resistant filling rope. This can enhance the tensile strength of the cable, ensure the relative position stability of the insulation cores, and ensure the cable has good roundness. Under special conditions such as high temperatures of 500°C to 3000°C or flames, it can quickly form a hard ceramic shell, effectively isolating the insulation cores and preventing contact and short circuits.

[0009] As a preferred technical solution of the present invention, the ground wire core, the auxiliary power wire core, and the control wire core are all made of Category 5 or Category 6 soft copper conductor and extruded polyetheretherketone material.

[0010] As a preferred technical solution of the present invention, the sheath includes an inner sheath and an outer sheath, and the outer sheath is located outside the inner sheath.

[0011] As a preferred technical solution of the present invention, the inner sheath is a polyurethane elastomer sheath, and the outer sheath is a nylon sheath. Polyurethane thermoplastic elastomers are characterized by excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low-temperature resistance, and good resistance to oil, chemicals, and the environment. The outer layer is a nylon sheath, which offers excellent processing properties, flexibility, toughness, and wear resistance, as well as excellent self-lubrication and chemical corrosion resistance, particularly resistance to gasoline, motor oil, and other oils. It effectively protects against rodents and termites, meeting environmental requirements.

[0012] As a preferred technical solution of the present invention, the shielding layer is a copper wire braided shielding layer or an aluminum-plastic composite tape plus a copper wire braided composite shielding layer.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention makes the charging wire core conductor lighter by using aluminum alloy, adds aramid yarn to the conductor, and has higher tensile strength. At the same time, the cable adopts a cooling tube, and the current carrying capacity of the cable can be increased with the same cross-section. The insulation adopts polyetheretherketone, which has excellent mechanical strength and rigidity, as well as good toughness and impact resistance. The filling adopts ceramic fireproof and fire-resistant filling rope to enhance the tensile strength of the cable and ensure the relative position of the insulation core is stable when the cable is compressed and torsion. The sheath adopts a double-layer sheath of polyurethane elastomer and nylon. The utility model enables the charging pile cable to have a fast charging function, and the cable has excellent properties of high strength, high torsion resistance, high wear resistance and anti-rat and ant. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the utility model.

[0015] In the figure: 1. Cooling tube; 2. Conductor; 3. Insulation layer; 4. Ground wire core; 5. Auxiliary power wire core; 6. Control wire core; 7. Filling layer; 8. Return pipe; 9. Inner sheath; 10. Outer sheath. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0017] like Figure 1 As shown, the utility model discloses a charging pile cable, and the technical solution adopted is, including a cable core, with two charging cores in the cable core, the center of the charging core is a cooling tube 1, and a conductor 2 is arranged around the outside of the cooling tube 1, which can promptly take away the heat generated by the conductor 2 through the silicone oil flowing in the cooling tube 1. In order to obtain lower weight and maintain better toughness, the conductor 2 adopts a bundled twisted wire of aged aluminum alloy monofilament and aramid yarn, which maintains a lighter weight while ensuring the strength of the charging core. The charging core is covered with an insulating layer 3, and the insulating layer 3 adopts PEEK material, which is connected to the conductor 2 and covered on the outside of all conductors 2 of each charging core.

[0018] The two charging cores are arranged side by side, with a return pipe 8 above the connecting line and a ground core 4 below. The return pipe 8 and the ground core 4 are symmetrical about the connecting line of the two charging cores.

[0019] Two auxiliary power cables 5 are symmetrically positioned on either side of the ground cable 4, and two control cables 6 are symmetrically positioned on either side of the return pipe 8. Each of these cables utilizes Category 5 soft copper conductors, extruded with PEEK insulation. One of the control cables 6 also features a braided copper shield to prevent signal interference between the two cables.

[0020] A filling layer 7 is filled in the gaps between the two charging cores, the ground core 4, the two auxiliary power cores 5, and the two control cores 6 to maintain good roundness. The filling layer 7 uses ceramic fire-proof and fire-resistant filling rope. An inner sheath 9 is provided outside the filling layer 7. The inner sheath 9 uses a polyurethane elastomer. The inner sheath 9 is wrapped with an outer sheath 10, which is a nylon sheath.

[0021] After the charging gun head is connected in this embodiment, the cooling pipe 1 and the return pipe 8 are connected through the internal pipe of the charging gun head.

[0022] The connection method involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to common knowledge.

[0023] Components not described in detail herein are prior art.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging pile cable, characterized by: The invention comprises a cable core, wherein the cable core comprises a charging core, the charging core comprises a cooling tube (1) and a conductor (2), wherein the conductor (2) is provided in plurality and arranged around the cooling tube (1), and an insulating layer (3) is provided on the outside of the conductor (2); the cable core further comprises a ground core (4), an auxiliary power core (5) and a control core (6), and is provided with a return pipe (8), and a filling layer (7) is filled between each core in the cable core and between the core and the return pipe (8); there are two control cores (6), at least one of which is provided with a shielding layer; and the cable core is provided with a sheath.

2. The charging pile cable according to claim 1, characterized in that: The conductor (2) is a stranded wire of aged aluminum alloy monofilaments.

3. The charging pile cable according to claim 2, characterized in that: The conductor (2) is a bundle of twisted wires of aged aluminum alloy monofilaments and aramid yarns.

4. The charging pile cable according to claim 1, characterized in that: The insulating layer (3) is a polyetheretherketone insulating layer.

5. The charging pile cable according to claim 1, characterized in that: The filling layer (7) is a ceramic fireproof and fire-resistant filling rope.

6. The charging pile cable according to claim 1, characterized in that: The sheath comprises an inner sheath (9) and an outer sheath (10), wherein the outer sheath (10) is located outside the inner sheath (9).

7. The charging pile cable according to claim 6, characterized in that: The inner sheath (9) is a polyurethane elastomer sheath; the outer sheath (10) is a nylon sheath.

8. The charging pile cable according to claim 1, characterized in that: The shielding layer is a copper wire braided shielding layer or an aluminum-plastic composite tape plus a copper wire braided composite shielding layer.

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