Cable for new energy electric vehicle charging pile

Abstract

The utility model relates to the technical field of cables, and discloses a cable for a charging pile of a new energy electric vehicle, which comprises a cable core assembly and heat dissipation rings arranged on the peripheral side of the cable core assembly, the heat dissipation rings are distributed along the length direction of the cable core assembly, and the thickness of the heat dissipation rings is reduced outwards along the radial direction. According to the cable, the heat dissipation ring is arranged on the outer side of the cable core assembly, the heat dissipation area of the cable core assembly is increased, the thickness of the heat dissipation ring is reduced outwards in the radial direction, heat dissipation, heat dissipation efficiency improvement and cable temperature reduction are facilitated through the arrangement, the cross section of the heat dissipation ring is arranged to be a triangular or trapezoidal structure which is closest to a concave parabola, and the heat dissipation efficiency is improved. Under a certain heat dissipation condition, the heat dissipation effect is guaranteed, materials can be saved, the load of the cable is reduced, and the cable is prevented from being broken due to overweight.

Description

Technical Field

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

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0003] At present, most new energy vehicles on the market are electric-driven. Such electric-driven new energy vehicles are usually charged using charging piles. The cables in the charging piles of new energy vehicles generate a lot of heat during use. If the heat is not dissipated in time, the temperature will be too high, affecting the service life. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a cable for a new energy electric vehicle charging pile, so that it can solve the problem of high temperature of the cable in the new energy vehicle charging pile during use.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A cable for a new energy electric vehicle charging pile comprises a cable core assembly and a heat dissipation ring arranged on the circumference of the cable core assembly. The heat dissipation ring is distributed along the length direction of the cable core assembly, and the thickness of the heat dissipation ring decreases radially outward.

[0007] In the present application, a heat dissipation ring is arranged on the outside of the cable core assembly to increase the heat dissipation area of ​​the cable core assembly, and the thickness of the heat dissipation ring decreases radially outward. Such an arrangement is conducive to heat dissipation, improves heat dissipation efficiency, and reduces the temperature of the cable.

[0008] Furthermore, the cross-section of the heat dissipation ring in the circumferential direction is a triangle.

[0009] Furthermore, the cross-section of the heat dissipation ring in the circumferential direction is trapezoidal.

[0010] In this application, the cross-section of the heat dissipation ring is set to a triangle or a trapezoid, which is the structure closest to a concave parabola. Under certain heat dissipation conditions, it can achieve the heat dissipation effect while saving material usage, reducing cable load, and preventing the cable from breaking due to excessive weight.

[0011] Furthermore, a heat dissipation layer is connected to the outer side of the heat dissipation ring.

[0012] In the present application, a heat dissipation layer is provided to guide the heat on the heat dissipation ring, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0013] In the present application, in order to further improve the heat dissipation efficiency, a heat dissipation layer is provided outside the heat dissipation ring, and the heat dissipation layer can play a role in protecting the heat dissipation ring.

[0014] Furthermore, a heat conducting plate is arranged on the inner wall of the heat dissipation layer along the length direction, and a groove for inserting the heat conducting plate is arranged on the heat dissipation ring.

[0015] Furthermore, the cable core assembly includes a fireproof layer and a plurality of conductive cores arranged in the fireproof layer, the conductive cores are all coated with an insulating layer, and a filling layer is arranged between the fireproof layer and the insulating layer.

[0016] Furthermore, the arrangement spacing of the heat dissipation rings close to the end of the cable core assembly is smaller than the arrangement spacing away from the end of the cable core assembly.

[0017] In the present application, more heat dissipation rings are arranged near the end of the cable core assembly, which can improve the heat dissipation at the joint and prevent the cable from being damaged by aging due to heat accumulation.

[0018] Beneficial effects of the utility model:

[0019] 1. In the present application, a heat dissipation ring is arranged on the outside of the cable core assembly to increase the heat dissipation area of ​​the cable core assembly, and the thickness of the heat dissipation ring decreases radially outward. Such an arrangement is conducive to heat dissipation, improves heat dissipation efficiency, and reduces the temperature of the cable.

[0020] 2. In this application, the cross-section of the heat dissipation ring is set to a triangle or a trapezoid, which is the structure closest to a concave parabola. Under certain heat dissipation conditions, it can achieve the heat dissipation effect while saving material usage, reducing the cable load, and preventing the cable from breaking due to excessive weight.

[0021] 3. Setting more heat dissipation rings near the end of the cable core assembly can improve heat dissipation at the joint and prevent cable aging and damage caused by heat accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic cross-sectional view of the cable of the utility model;

[0024] Figure 3 It is a connection diagram of the heat dissipation ring of the utility model;

[0025] in,

[0026] 10. Cable core assembly; 11. Fireproof layer; 12. Filling layer; 13. Insulation layer; 14. Conductive core;

[0027] 20. Heat dissipation ring;

[0028] 30. heat dissipation layer; 32. heat conducting plate. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0030] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] like Figure 1-3 As shown, the present application provides a cable for a new energy electric vehicle charging pile, comprising a cable core assembly 10 and a plurality of heat dissipation rings 20 arranged around the cable core assembly 10. The heat dissipation ring 20 is used to guide the heat generated by the cable core assembly 10 and dissipate the heat to the surrounding environment.

[0032] The heat dissipation ring 20 is distributed along the length of the cable core assembly 10, and the thickness of the heat dissipation ring 20 decreases radially outward. That is, the heat dissipation ring 20 is a cylindrical structure with a thick middle and thin ends. The cross section of the heat dissipation ring 20 in the circumferential direction is a triangle, and of course the cross section of the heat dissipation ring 20 in the circumferential direction can also be a trapezoid.

[0033] Specifically, it is theoretically proven that under a certain heat dissipation condition, fins with a concave parabola profile save the most material. In practical applications, triangular ribs or trapezoidal ribs with simple processes and performance closest to the concave parabola are often used for heat dissipation. In the present application, the profile of the heat dissipation ring 20 is set to be triangular or trapezoidal, which reduces the material usage of the heat dissipation ring 20 while ensuring the heat dissipation effect, thereby improving the practicality of the device.

[0034] In the present application, the heat dissipation rings 20 can be evenly distributed along the length direction of the cable core assembly 10, that is, the distances between adjacent heat dissipation rings 20 are equal. Of course, the heat dissipation rings 20 can also be unevenly distributed, the purpose of which is to improve the heat dissipation efficiency at the connection points at both ends of the cable. Since both ends of the cable core assembly 10 are usually connected to the joints, higher heat is usually generated there. Therefore, more heat dissipation rings 20 can be arranged near the end of the cable core assembly 10 to improve the heat dissipation efficiency and reduce the cable temperature.

[0035] A heat dissipation layer 30 is connected to the outside of the heat dissipation ring 20. The heat dissipation layer 30 is used to protect the heat dissipation ring 20 and prevent the heat dissipation ring 20 from being damaged by external facilities. The heat dissipation layer 30 can be sleeved on the side of the heat dissipation ring 20 for use, and can also be connected to the heat dissipation ring 20 for use. A plurality of heat conducting plates 32 are arranged on the inner wall of the heat dissipation layer 30 along the length direction. The heat dissipation ring 20 is provided with a groove for connecting the heat conducting plate 32. The heat dissipation layer 30 is connected to the heat dissipation ring 20 through the groove and the heat conducting plate 32. The heat conducting plate 32 can guide the heat on the heat dissipation ring 20 to the heat dissipation layer 30, and the heat dissipation layer 30 assists in dissipating the heat into the nearby air.

[0036] The cable core assembly 10 includes a fireproof layer 11 and a plurality of conductive cores 14 arranged in the fireproof layer 11. The conductive cores 14 are all coated with an insulating layer 13. A filling layer 12 is arranged between the fireproof layer 11 and the insulating layer 13. In the present application, the fireproof layer 11 and the insulating layer 13 are arranged outside the conductive core 14 to ensure the fireproof and insulating performance of the conductive core 14, and the filling layer 12 is used to ensure the torsion resistance of the cable.

[0037] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A cable for a new energy electric vehicle charging pile, characterized in that: It comprises a cable core assembly (10) and a plurality of heat dissipation rings (20) arranged on the circumference of the cable core assembly (10); the heat dissipation rings (20) are distributed along the length direction of the cable core assembly (10); and the thickness of the heat dissipation rings (20) decreases radially outwards.

2. The cable for the new energy electric vehicle charging pile according to claim 1, characterized in that: The cross section of the heat dissipation ring (20) in the circumferential direction is a triangle.

3. The cable for the new energy electric vehicle charging pile according to claim 1, characterized in that: The cross section of the heat dissipation ring (20) in the circumferential direction is a trapezoid.

4. The cable for the new energy electric vehicle charging pile according to claim 1, characterized in that: A heat dissipation layer (30) is connected to the outer side of the heat dissipation ring (20).

5. The cable for the new energy electric vehicle charging pile according to claim 4, characterized in that: A heat conducting plate (32) is arranged on the inner wall of the heat dissipation layer (30) along the length direction, and a groove for inserting the heat conducting plate (32) is arranged on the heat dissipation ring (20).

6. The cable for the new energy electric vehicle charging pile according to claim 5, characterized in that: The cable core assembly (10) comprises a fireproof layer (11) and a plurality of conductive cores (14) arranged in the fireproof layer (11); the conductive cores (14) are each coated with an insulating layer (13); and a filling layer (12) is arranged between the fireproof layer (11) and the insulating layer (13).

7. The cable for the new energy electric vehicle charging pile according to claim 1, characterized in that: The arrangement spacing of the heat dissipation rings (20) close to the end of the cable core assembly (10) is smaller than the arrangement spacing away from the end of the cable core assembly (10).

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