Weather-resistant charging cable and charging pile

Abstract

The utility model discloses a weather resistant charging cable and charging pile, charging cable includes: by power line core, control line core, ground wire, auxiliary power cord and return flow pipe and is twisted into the cable core and the sheath of cladding in the cable core outside, the outside of power line core's central conductor is equipped with a cooling pipe, and the medium flow channel is formed between its inner wall and central conductor, and the medium flow channel and return flow pipe are all used for passing into cooling medium and the flow direction of cooling medium in the medium flow channel and return flow pipe is opposite, and the central conductor is twisted into by several conductor strands, and each conductor strand is twisted into by several monofilament conductors, and the monofilament conductor is composed of metal conductor and insulating coating coated on the outside surface of metal conductor. Return flow pipe and the power line core with the outside cooling pipe are all provided with 2. The utility model neither influences the heat dissipation performance of conductor itself, and can reduce the insulating property requirement of cooling medium in medium flow channel, improves the safety in the use process.

Description

Technical Field

[0001] This utility model relates to a weather-resistant charging cable and a charging pile, belonging to the field of new energy and energy-saving technology. Background Technology

[0002] Car charging pile cables are cables used to transmit electricity to new energy vehicles. Because these cables are used in charging piles, in addition to their primary function of power transmission, they also need to transmit signals. Generally, the signal transmission core and the power transmission core are twisted together in the same core, achieving a dual function. During use, the cable is frequently moved to charge the car, and the working environment is outdoors. Therefore, the cable requires good bending performance, abrasion resistance, heat resistance, water resistance, and resistance to diesel and gasoline. In existing technology, the cooling pipes in charging cables are generally made of fluoroplastics, such as one of FEP / PFA / PTFE. Although fluoroplastics have good temperature and abrasion resistance, their high hardness and lack of flexibility result in poor overall bending performance of the cable, making it inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a weather-resistant charging cable that does not affect the heat dissipation performance of the conductor itself, and can reduce the insulation performance requirements of the cooling medium in the medium flow channel, thereby improving safety during use.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a weather-resistant charging cable, comprising: a cable core formed by twisting together a power core, a control core, a ground wire, an auxiliary power wire, and a return pipe, and a sheath covering the outside of the cable core. A cooling pipe is sleeved on the outside of the central conductor of the power core. A medium flow channel is formed between the inner wall of the cooling pipe and the central conductor. Cooling medium is introduced into both the medium flow channel and the return pipe, and the flow direction of the cooling medium in the medium flow channel and the return pipe is opposite. The central conductor is formed by twisting together several conductor strands, and each conductor strand is formed by twisting together several monofilament conductors. The monofilament conductor is composed of a metal conductor and an insulating coating coated on the outer surface of the metal conductor.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, both the return pipe and the power core with cooling pipe on the outside are provided with 2 wires.

[0006] 2. In the above scheme, the diameter of the return pipe is smaller than the diameter of the cooling pipe.

[0007] 3. In the above scheme, the metal conductor is a copper conductor, and the insulating coating is an insulating varnish layer.

[0008] 4. In the above scheme, the monofilament conductor is a straight-welding enameled wire with a temperature resistance of 150℃~180℃.

[0009] 5. In the above scheme, the twisting pitch ratio of the central conductor, which is formed by twisting several conductor strands, is 10~20, and the twisting pitch ratio of the conductor strand, which is formed by twisting several monofilament conductors, is 15~25.

[0010] A charging pile is also provided, including a weather-resistant charging cable, which is connected between the pile body and the charging gun.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model of a weather-resistant charging cable features a cooling tube sleeved around the center conductor of its power core. A medium flow channel is formed between the inner wall of the cooling tube and the center conductor. Cooling medium is introduced into both the medium flow channel and the return pipe, with the flow directions of the cooling medium being opposite. The center conductor is composed of several strands of conductor wire twisted together, and each strand is composed of several single conductor wires twisted together. Each single conductor wire consists of a metal conductor and an insulating coating applied to the outer surface of the metal conductor. While rapidly dissipating heat generated in the conductor through the cooling medium, the heat dissipation performance of the conductor itself is not affected, and the insulation performance requirements of the cooling medium in the medium flow channel are reduced, thereby improving safety during use. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of the weather-resistant charging cable of this utility model; Appendix Figure 2 This is a schematic diagram of the structure of the center conductor of the weather-resistant charging cable of this utility model; Appendix Figure 3 This is a schematic diagram of the structure of the single-wire conductor in the weather-resistant charging cable of this utility model; Appendix Figure 4 This is a schematic diagram of the charging pile structure; Appendix Figure 5 This is a schematic diagram of the cooling pipe in the weather-resistant charging cable of this utility model.

[0013] In the above attached diagram: 1. Power conductor; 11. Center conductor; 12. Cooling pipe; 13. Medium flow channel; 2. Control conductor; 3. Ground wire; 4. Auxiliary power line; 5. Return pipe; 6. Sheath; 7. Conductor strand; 8. Monofilament conductor; 81. Metal conductor; 82. Insulating coating; 10. Pile body; 14. Charging gun. Detailed Implementation

[0014] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0015] Example 1: A weather-resistant charging cable includes: a cable core formed by twisting together a power core 1, a control core 2, a ground wire 3, an auxiliary power line 4, and a return pipe 5, and a sheath 6 covering the outside of the cable core. A cooling pipe 12 is sleeved on the outside of the center conductor 11 of the power core 1. A medium flow channel 13 is formed between the inner wall of the cooling pipe 12 and the center conductor 11. Cooling medium is introduced into both the medium flow channel 13 and the return pipe 5, and the flow direction of the cooling medium in the medium flow channel 13 and the return pipe 5 is opposite. The center conductor 11 is formed by twisting together several conductor strands 7. Each conductor strand 7 is formed by twisting together several monofilament conductors 8. The monofilament conductor 8 consists of a metal conductor 81 and an insulating coating 82 coated on the outer surface of the metal conductor 81.

[0016] The aforementioned return pipe 5 and the power core 1 with cooling pipe 12 on the outside are each provided with 2; the diameter of the aforementioned return pipe 5 is smaller than the diameter of the cooling pipe 12.

[0017] The aforementioned single-wire conductor 8 is a straight-welding enameled wire with a temperature resistance of 170℃.

[0018] The twisting pitch ratio of the central conductor 11, which is formed by twisting several conductor strands 7, is 15, and the twisting pitch ratio of the conductor strands 7, which is formed by twisting several monofilament conductors 8, is 20.

[0019] Example 2: A charging pile includes a weather-resistant charging cable connected between the pile body 10 and the charging gun 14. The weather-resistant charging cable includes: a cable core formed by twisting together a power core 1, a control core 2, a ground wire 3, an auxiliary power line 4, and a return pipe 5, and a sheath 6 covering the outside of the cable core. A cooling pipe 12 is sleeved on the outside of the center conductor 11 of the power core 1. A medium flow channel 13 is formed between the inner wall of the cooling pipe 12 and the center conductor 11. Cooling medium is introduced into both the medium flow channel 13 and the return pipe 5, and the flow direction of the cooling medium in the medium flow channel 13 and the return pipe 5 is opposite. The center conductor 11 is formed by twisting together several conductor strands 7. Each conductor strand 7 is formed by twisting together several single conductors 8. The single conductor 8 is composed of a metal conductor 81 and an insulating coating 82 coated on the outer surface of the metal conductor 81.

[0020] The aforementioned return pipe 5 and cooling pipe 12 both include a silicone tube layer and a carbon fiber braided layer disposed on the outer surface of the silicone tube layer. The carbon fiber braided layer is coated with silicone adhesive, thereby bonding the carbon fiber braided layer to the silicone tube layer and forming a silicone coating layer on the outer side of the carbon fiber braided layer. The weaving requirements of the carbon fiber braided layer are: 3K carbon fiber, 24 spindles, 15 mesh. Liquid silicone adhesive is applied to the outer surface of the carbon fiber braided layer and then cured at high temperature. During this process, part of the silicone adhesive is immersed into the carbon fiber braided layer to bond and fix the carbon fiber braided layer and the silicone tube layer to prevent relative sliding between the two. The other part of the silicone adhesive is cured to form a solid silicone coating layer on the outer surface of the carbon fiber braided layer. Silicone itself is a thermosetting material with a temperature resistance rating of 150℃~180℃; Silicone tubing is a flexible tube with good expandability, making it more convenient to thread the water nozzles at both ends during use. After threading, it will elastically shrink, providing a good seal. Braided tubing offers better temperature resistance. When the internal liquid pressure is too high, the silicone tubing is bound by glass fiber to prevent expansion and increase burst pressure. The cooling tube has a larger and more stable liquid flow pressure, increasing the liquid flow rate and carrying away more heat, thus improving heat dissipation efficiency. It also has good strength, tear resistance, and scratch resistance, making the cabling less prone to deformation and increasing stiffness and roundness.

[0021] The aforementioned return pipe 5 and the power core 1 with cooling pipe 12 on the outside are each provided with 2; the diameter of the aforementioned return pipe 5 is smaller than the diameter of the cooling pipe 12.

[0022] The aforementioned metal conductor 81 is a copper conductor, the aforementioned insulating coating 82 is an insulating varnish layer, and the aforementioned single-wire conductor 8 is a straight-welded enameled wire with a temperature resistance of 160℃.

[0023] An insulating coating is added to the outside of each monofilament conductor. This coating is thinner than that of an extruded insulation layer and does not affect the conductor's heat dissipation performance. At the same time, because of the insulating coating, the insulation performance requirements for the cooling medium flowing through the outside of the central conductor are not high, which also enhances the safety performance during use, especially after long-term use.

[0024] The aforementioned weather-resistant charging cable can quickly dissipate heat generated in the conductor through the cooling medium without affecting the conductor's own heat dissipation performance. It can also reduce the insulation performance requirements of the cooling medium in the medium flow channel, thereby improving safety during use.

[0025] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A weather-resistant charging cable, comprising: A cable core consisting of a power core (1), a control core (2), a ground wire (3), an auxiliary power line (4), and a return pipe (5) twisted together, and a sheath (6) covering the outside of the cable core, characterized in that: a cooling pipe (12) is sleeved on the outside of the center conductor (11) of the power core (1), and a medium flow channel (13) is formed between the inner wall of the cooling pipe (12) and the center conductor (11). The medium flow channel (13) and the return pipe (5) are both used to introduce cooling medium, and the cooling medium flows in opposite directions in the medium flow channel (13) and the return pipe (5). The center conductor (11) is formed by twisting together several conductor strands (7), and each conductor strand (7) is formed by twisting together several single conductors (8). The single conductor (8) consists of a metal conductor (81) and an insulating coating (82) coated on the outer surface of the metal conductor (81).

2. The weather-resistant charging cable according to claim 1, characterized in that: The return pipe (5) and the power core (1) with cooling pipe (12) on the outside are each provided with 2 wires.

3. The weather-resistant charging cable according to claim 2, characterized in that: The diameter of the return pipe (5) is smaller than the diameter of the cooling pipe (12).

4. The weather-resistant charging cable according to claim 1, characterized in that: The metal conductor (81) is a copper conductor, and the insulating coating (82) is an insulating varnish layer.

5. The weather-resistant charging cable according to claim 1, characterized in that: The monofilament conductor (8) is a straight-welded enameled wire with a temperature resistance of 150℃~180℃.

6. The weather-resistant charging cable according to claim 1, characterized in that: The twisting pitch ratio of the center conductor (11), which is formed by twisting several conductor strands (7), is 10 to 20, and the twisting pitch ratio of the conductor strands (7), which is formed by twisting several monofilament conductors (8), is 15 to 25.

7. A charging pile, characterized in that: Includes the weather-resistant charging cable as described in any one of claims 1 to 6, wherein the weather-resistant charging cable is connected between the pile body (10) and the charging gun (14).

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