New energy automobile charging cable

Abstract

The utility model discloses a new energy automobile charging cable, which comprises a positioning core, a plurality of leads arranged around the positioning core, an insulating layer arranged between the positioning core and the plurality of leads, an inner sheath layer and an outer sheath layer arranged outside the insulating layer, and a heat transfer layer arranged between the inner sheath layer and the outer sheath layer. Wherein the heat transfer layer is of a metal wire net structure, the insulating layer is provided with arc-shaped clamping grooves matched with the wires, the side walls of the wires abut against the inner side of the inner sheath layer, and a heat conduction silica gel layer is arranged in a gap between the inner sheath layer and the insulating layer. According to the utility model, the heat transfer layer is arranged between the inner sheath layer and the outer protective sleeve, the metal wire net structure increases the contact area, the heat transfer effect is improved, and heat can be uniformly distributed on the outer protective sleeve of the cable. Heat concentration of the outer protective sleeve is avoided, aging of the outer protective sleeve is slowed down, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically, to a charging cable for new energy vehicles. Background Art

[0002] Facing the increasingly severe energy, environment, and climate change, developing new energy-powered vehicles has gradually become a global consensus. In recent years, with the increasing rise of new energy technologies, the electric vehicle industry has achieved unprecedented rapid development. Currently, some domestic and foreign automobile brands have mass-produced electric vehicles on the market, and the charging safety and reliability of electric vehicles have increasingly attracted the attention of people from all walks of life in the electric vehicle industry. The charging cable of an electric vehicle is the cable for realizing the charging of an electric vehicle.

[0003] In the prior art, for example, the charging cable of an electric vehicle in the utility model CN212322710U. In this patent, through the silicone grease sleeve and the heat conduction plate arranged outside the wire core, the high temperature generated by the wire core is transferred to the heat conduction plate, thereby reducing the high temperature on the power line, the ground line, and the signal control line, effectively solving the problem that the high temperature inside the charging cable affects the service life of the power line core. However, the setting method of the heat conduction plate causes heat accumulation, and the local temperature on the outer sheath layer of the cable is too high. With long-term use, it accelerates the aging of the outer sheath layer of the cable and then causes damage. At the same time, the protruding friction blocks arranged outside the cable still cause wear to the wire skin at the intervals between the friction blocks. At the same time, the friction blocks will be consumed completely in subsequent use and cannot protect the cable for a long time. Summary of the Utility Model

[0004] An object of the utility model is to solve at least the above problems and / or defects and provide at least the advantages described hereinafter.

[0005] To achieve these objects and other advantages according to the utility model, a charging cable for new energy vehicles is provided, including a positioning core, and a plurality of wires are arranged around the positioning core. An insulating layer is arranged between the positioning core and the plurality of wires. An inner sheath layer and an outer sheath layer are arranged outside the insulating layer. A heat transfer layer is arranged between the inner sheath layer and the outer protective sleeve.

[0006] Wherein, the heat transfer layer is a metal wire mesh structure. Arc-shaped card slots matched with the respective wires are arranged on the insulating layer, and the side walls of the respective wires are abutted against the inner side of the inner sheath layer. A heat-conducting silicone layer is arranged in the gap between the inner sheath layer and the insulating layer.

[0007] Preferably, a stainless steel steel wire rope is arranged along the axial direction at the center of the positioning core.

[0008] Preferably, it further includes: a protective sleeve is arranged on the outer side wall of the outer sheath layer along the length direction of the cable.

[0009] Preferably, the protective sleeve includes a corrugated pipe and fixing rings, and the fixing rings are fixedly connected to both ends of the corrugated pipe.

[0010] Preferably, a reflective layer is provided on the outer side of the protective sleeve.

[0011] The utility model has at least the following beneficial effects:

[0012] In the utility model, a heat transfer layer is arranged between the inner sheath layer and the outer protective sleeve. The metal wire mesh structure increases the contact area, improves the heat transfer effect, and enables the heat to be evenly distributed on the outer protective sleeve of the cable. The concentration of heat on the outer protective sleeve is avoided, the aging of the outer protective sleeve is slowed down, and the service life of the cable is prolonged.

[0013] Other advantages, objectives and features of the utility model will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic cross-sectional structure diagram of a new energy vehicle charging cable provided by the utility model;

[0015] Figure 2 FIG. is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 FIG. is a schematic installation structure diagram of the protective sleeve of the utility model;

[0017] Figure 4 FIG. is a schematic diagram of a partial structure of a protrusion on the outer side of the cable;

[0018] Figure 5 FIG. is another schematic diagram of the structure where the protrusion is located on the outer side of the cable.

[0019] Reference numerals in the drawings: 1, stainless steel wire rope; 2, power line; 3, inner sheath layer; 4, signal control line; 5, heat transfer layer; 6, outer sheath layer; 7, insulating layer; 8, positioning core; 9, charging cable; 10, protective sleeve; 11, fixing ring; 12, ground wire; 13, heat-conducting silicone layer; 14, protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further detailed description of the utility model is provided in conjunction with the drawings, so that those skilled in the art can implement it with reference to the text of the specification.

[0021] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0022] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In addition, in the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0025] The following will describe the present experimental new model in detail with reference to the drawings:

[0026] Figure 1 There is shown a charging cable for a new energy vehicle of the present utility model, which includes a positioning core 8, and a plurality of wires are arranged around the positioning core 8. An insulating layer 7 is arranged between the positioning core 8 and the plurality of wires. An inner sheath layer 3 and an outer sheath layer 6 are arranged outside the insulating layer 7. A heat transfer layer 5 is arranged between the inner sheath layer 3 and the outer protective sheath;

[0027] Among them, the heat transfer layer 5 is a metal wire mesh structure. Arc-shaped card slots matched with the respective wires are arranged on the insulating layer 7, and the side walls of the respective wires are abutted against the inner side of the inner sheath layer 3. A heat-conducting silicone layer 13 is arranged in the gap between the inner sheath layer 3 and the insulating layer 7.

[0028] Working principle:

[0029] During the charging process of the charging cable 9, multiple wires including the power line 2, the ground wire 12, and the signal control line 4 generate high temperatures during operation. The insulating layer 7 clamps each wire through multiple arc-shaped card slots arranged in the radial direction of the cable, avoiding signal interference between the wires and also limiting the positions of the wires in the cable (the material of the insulating layer 7 is polycarbonate). The multiple wires directly abut against the inner sheath layer 3 through the heat-conducting silicone layer 13 and the outer sidewalls of the wires. The heat-conducting silicone has good heat-conducting performance and high-temperature resistance characteristics, increasing the contact area and thus improving the heat conduction efficiency. This enables the heat to be quickly transferred to the inner sheath layer 3 (the inner sheath layer 3 is set as a polyvinyl chloride inner sheath layer 3), and through the inner sheath layer 3 directly contacting the heat transfer layer 5, the heat can be quickly transferred to the heat transfer layer 5, and the temperature of the heat transfer layer 5 rises (the heat transfer layer 5 is set as a wire mesh. Through the wire mesh heat transfer layer 5, the heat conduction effect is ensured, and at the same time, the tear resistance and flexibility of the heat transfer layer 5 are effectively improved, further avoiding the phenomenon of breakage during the use of the cable). Here, the material of the heat transfer layer 5 is selected as copper because copper has good heat conduction coefficient and ductility. At the same time, the metal heat transfer layer 5 enhances the signal shielding ability of the cable. The wire mesh structure adopted by the heat transfer layer 5 can evenly transfer the heat to the outer sheath layer 6 (the outer sheath layer 6 is set as a chlorinated polyethylene outer sheath layer 6), enabling the cable to evenly dissipate the heat onto the outer sheath layer 6, avoiding the concentration of heat on the outer sheath layer 6 of the cable, slowing down the aging speed of the outer sheath layer 6, and increasing the service time of the cable.

[0030] In the above solution, a stainless steel wire rope 1 is arranged along the axial direction at the center of the positioning core 8. By adopting this technical method, the positioning core 8, as the internal support structure of the cable, can effectively maintain the shape and structural stability of the cable, preventing the cable from deforming or being damaged under external forces such as bending and stretching. A stainless steel wire rope 1 is set as the center line in the middle of the positioning core 8 to further enhance the overall tensile performance of the charging cable 9.

[0031] In the above solution, it further includes: a protective sleeve 10 is arranged on the outer sidewall of the outer sheath layer 6 along the length direction of the cable. By adopting this technical method, the friction between the cable and the ground can be reduced, avoiding the damage of the outer sheath layer 6 of the cable and the risk of electric leakage.

[0032] In the above solution, the protective sleeve 10 includes a corrugated pipe and fixing rings 11, and the fixing rings 11 are fixedly connected to both ends of the corrugated pipe. The corrugated pipe adopts a TPE telescopic corrugated pipe, and the fixing rings 11 adopt adjustable clamps. The TPE telescopic corrugated pipe is threaded through the easily worn part of the charging cable 9, and the length of the TPE telescopic corrugated pipe is adjusted according to the size of the worn part, so that the corrugated pipe completely wraps the easily worn part. After the adjustment is completed, the adjustable clamp is used to fix the corrugated pipe on the charging cable. By adopting this technical method, the corrugated pipe can be adjusted to a suitable length according to the size of the worn part, and the corrugated pipe can be quickly replaced by fixing it with an adjustable clamp.

[0033] In the above solution, a reflective layer is provided on the outer side of the protective sleeve 10. By adopting this technical method, during the charging process of the cable, part of the cable is located on the ground. Through the reflective layer on the outer side of the protective sleeve 10, the cable reflects the light source in the environment, making it easier for the vehicle owner or pedestrian to discover the cable at night, thus playing a reminder and warning role, improving safety, and also preventing people from tripping. At the same time, in actual applications, the reflective material can also be sprayed on the outer side of the protective sleeve.

[0034] At the same time, a plurality of protrusions 14 are provided on the outer surface of the charging cable 9 in the circumferential direction. The length of the protrusions 14 can be the same as the length of the cable, or can be provided between two protective sleeves, and the height of the protective sleeve 10 is higher than the height of the protrusions 14. During use, the cable can be protected only by the plurality of protrusions 14 on the outside of the cable. The position, quantity, and height of the protrusions 14 can be adjusted accordingly according to the thickness of the cable, so that the protrusions 14 can ensure that the cable does not rub against the ground;

[0035] The combination of the protrusions 14 and the protective sleeve 10 is selected to increase the practicability of the cable. During the manufacturing process, the protrusions 14 are formed in a local area of the cable, and the rest is a normal cable. The protective sleeve 10 is sleeved on the area of the cable without the protrusions 14. The cable first rubs against the ground through the protective sleeve 10, and the height of the protective sleeve 10 is higher than the height of the protrusions 14, further enhancing the wear resistance of the cable.

[0036] The above solution is only an illustration of a preferred example, but is not limited thereto. When implementing the present utility model, appropriate replacements and / or modifications can be made according to the needs of users.

[0037] Although the embodiments of the present utility model have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated and described examples here.

Claims

1. A charging cable for a new energy vehicle, comprising a positioning core, and a plurality of wires are arranged around the positioning core. An insulating layer is arranged between the positioning core and the plurality of wires, and an inner sheath layer and an outer sheath layer are arranged outside the insulating layer, and is characterized in that, A heat transfer layer is provided between the inner sheath layer and the outer protective sheath; Among them, the heat transfer layer is a metal wire mesh structure. Arc-shaped card slots matching with each wire are provided on the insulating layer, and the side walls of each wire are abutted against the inner side of the inner sheath layer. A heat-conducting silica gel layer is provided in the gap between the inner sheath layer and the insulating layer.

2. The charging cable for new energy vehicles according to claim 1, characterized in that, A stainless steel wire rope is arranged along the axial direction at the center of the positioning core.

3. The new energy vehicle charging cable according to claim 1, characterized in that, It also includes: A protective sleeve is arranged on the outer side wall of the outer sheath layer along the length direction of the cable.

4. The new energy vehicle charging cable according to claim 3, characterized in that, The protective sleeve includes a corrugated pipe and fixing rings, and the fixing rings are fixedly connected to both ends of the corrugated pipe.

5. The new energy vehicle charging cable according to claim 3, wherein A reflective layer is arranged on the outer side of the protective sleeve.

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