New energy automobile charging cable

Abstract

The utility model discloses a new energy automobile charging cable which comprises an inner supporting structure, and the outer side of the inner supporting structure is sleeved with a sheath structure. The inner supporting structure is provided with a plurality of supporting ridges, the plurality of supporting ridges divide an inner cavity of the sheath structure into a plurality of wiring cavities, wires are arranged in the wiring cavities in a penetrating manner, and filling bodies are arranged between the wires and the inner walls of the wiring cavities; a stress induction wire core is embedded in the center of the inner supporting structure. According to the utility model, the anti-compression and anti-fracture capability of the cable is improved, and an alarm can be given out when the cable is over-folded and over-pressed.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle charging cables. Background Art

[0002] New energy cables are used in the new energy vehicle sector and include various types of cables, including power cables, control signal cables, and communication data cables. In practical applications, charging cables are often exposed to the outside world and can be inadvertently compressed or squeezed by heavy objects, causing the cables to be abnormally stressed or bent for extended periods of time. Since the cable's status cannot be monitored in real time, prolonged periods of overstress or excessive bending can easily damage the cables, shortening their service life. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a new energy vehicle charging cable, which improves the cable's resistance to compression and bending, and can issue a warning when it is over-bent or over-pressured.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a new energy vehicle charging cable, comprising an inner support structure, wherein the outer side of the inner support structure is provided with a sheath structure;

[0005] The inner support structure is provided with a plurality of support ribs, and the plurality of support ribs divide the inner cavity of the sheath structure into a plurality of wiring cavities, wherein wires are passed through the wiring cavities, and a filling body is provided between the wires and the inner wall of the wiring cavity;

[0006] A stress-sensing wire core is embedded in the center of the inner support structure.

[0007] Furthermore, the stress sensing core includes a plurality of stress sensing units, and the plurality of stress sensing units are arranged at equal intervals along the central axis of the inner support structure.

[0008] Furthermore, the sheath structure includes a pull-resistant layer and a wear-resistant layer, the wear-resistant layer is sleeved on the outside of the pull-resistant layer, and the wear-resistant layer includes a plurality of reinforcement rings, which are arranged at equal intervals along the axis direction of the pull-resistant layer.

[0009] Furthermore, an annular groove is provided on the pull-resistant layer between two adjacent reinforcement rings.

[0010] Furthermore, the supporting ridges are arranged radially, and a plurality of the supporting ridges are arranged around at equal angles, and an elastic supporting sheet is fitted in the V-shaped groove between two adjacent supporting ridges.

[0011] Furthermore, an airbag cavity is provided in the supporting edge.

[0012] Furthermore, the wiring cavity is a cavity with a triangular cross-section.

[0013] Furthermore, the reinforcement ring is provided with a plurality of pressure-bearing surfaces, and the plurality of pressure-bearing surfaces correspond radially one-to-one to the plurality of wiring cavities.

[0014] Beneficial Effects: The utility model provides a new energy vehicle charging cable with a skeleton structure formed by a sheath and an internal support structure, which enhances the cable's overall compressive and bending resistance. The filler consolidation stabilizes the relative position of the internal guides, reducing the effects of external pressure or bending forces on the conductors. The built-in stress-sensing core collects stress changes at various points and generates warning signals at abnormal stress points, promptly eliminating potential overvoltage and overbending hazards and ensuring a long cable life. The internal support structure is designed to ensure sensing of multi-directional stress changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic structural diagram of a sheath structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] As attached Figure 1-2 The new energy vehicle charging cable includes an inner support structure 1, and a sheath structure 2 is provided on the outside of the inner support structure 1; the inner support structure 1 is provided with a plurality of supporting ridges 11, and the plurality of supporting ridges 11 divide the inner cavity of the sheath structure 2 into a plurality of wiring cavities, and a wire 3 is passed through the wiring cavity, and a filling body 4 is provided between the wire 3 and the inner wall of the wiring cavity.

[0019] This solution uses a filler layer to secure the position of each conductor relative to the inner support structure and the sheath structure, thereby utilizing the inner support structure to distribute and secure multiple conductors. The multiple supporting ribs of the inner support structure directly contact the inner wall of the sheath structure, transferring stress generated by external pressure or bending forces inward along the supporting ribs. The supporting ribs are constructed of a high-strength, highly elastic, flexible material capable of withstanding the primary stress distribution, allowing a small portion of the stress to be transferred to the conductors through the filler layer, thereby protecting the conductors on either side of the supporting ribs and achieving compressive resistance.

[0020] A stress sensing core 5 is embedded in the center of the inner support structure 1. The stress sensing core 5 includes a plurality of stress sensing units, which are arranged at equal intervals along the central axis of the inner support structure 1.

[0021] The stress changes transmitted from the supporting ridges to the center are collected by the stress-sensing core and transmitted as signals along the center core to the monitoring module. By analyzing the signals, the location of the compressed or bent cable is determined, and the location of the stress generation is determined. Accordingly, corresponding measures can be taken to eliminate the over-pressure and over-bending conditions, ensuring the normal use of the cable and its long service life. Preferably, the stress-sensing core can use a grating fiber optic cable or a series of pressure sensors, arranging the grating areas or pressure sensors at equal distances, so as to feedback the stress changes at equidistant points along the length of the cable, thereby determining the stress state of the cable.

[0022] The sheath structure 2 comprises a tensile layer 21 and a wear-resistant layer 22. The wear-resistant layer 22 is sleeved onto the outer surface of the tensile layer 21 and includes a plurality of reinforcement rings 221, arranged equidistantly along the axis of the tensile layer 21. An annular groove 211 is provided on the tensile layer 21 between adjacent reinforcement rings 221. The wear-resistant layer, which contacts the outside world, is made of a high-strength, wear-resistant metal or insulating material. The tensile layer provides a certain degree of toughness to withstand external forces. The multiple reinforcement rings form a corrugated pattern on the cable surface, which, combined with its inherent pressure-bearing properties, further enhances its external pressure-bearing capacity. The gaps between adjacent reinforcement rings, the annular grooves within the gaps, and the tensile strength of the tensile layer itself enable the cable to withstand significant bending forces. Upon bending to a certain degree, adjacent reinforcement rings collide with each other, preventing further bending. The stress generated by this collision is transmitted inward through the supporting edges to the stress-sensing core, thereby providing a warning during excessive bending.

[0023] The supporting ribs 11 are arranged radially, and a plurality of the supporting ribs 11 are arranged around each other at equal angles, and an elastic supporting sheet 12 is fitted into the V-shaped groove between two adjacent supporting ribs 11. An airbag cavity 13 is provided in the supporting ribs 11.

[0024] When pressure or bending force acts on the cable surface, it is multi-directional. The elastic support sheet is used to increase the root strength of the supporting ribs, thereby constraining the positions of multiple supporting ribs so that the multiple supporting ribs are always arranged radially to avoid bending under pressure. This allows stress changes to be quickly transmitted radially inward, while preventing bending from compressing the adjacent wires, thereby protecting the wires.

[0025] The built-in air pocket enhances the compressive strength and buffering capacity of the support ribs, allowing stress to be applied to the stress-sensing core without generating excessive force, thereby desensitizing the stress-sensing core and increasing the monitoring range. Furthermore, the air pocket cavity responds to forces acting in any direction on the support ribs, ensuring that stress in any direction is transmitted to the central stress-sensing core.

[0026] The wiring cavity is a triangular cross-section cavity. The reinforcement ring 221 is provided with a plurality of pressure-bearing surfaces 222, and the plurality of pressure-bearing surfaces 222 correspond to the plurality of wiring cavities in a radial direction.

[0027] When the external pressure acts just on the end of the supporting edge, the stress can be directly transmitted inward along the supporting edge. When the position of the external pressure corresponds to each wire, it acts directly on the pressure-bearing surface and is evenly transmitted inward to act on the filling body. The filling body is constrained by the wiring cavity structure to be a triangular structure, which further plays a role in compressive protection for the internal wires. Under the action of pressure, the two inward oblique sides of the filling body exert pressure on the supporting edges and elastic support sheets on both sides respectively, and can also be transmitted along the supporting edges to the stress-sensing wire core in the center, thereby achieving the purpose of multi-directional pressure resistance and multi-directional stress monitoring.

[0028] Among them, the filling body can be filled with flame retardant materials, and the airbag cavity inside the internal support structure can be filled with flame retardant gas. The wiring cavity becomes a separate flame retardant chamber, separating multiple wires in multiple flame retardant chambers. The fire caused by any wire can be effectively suppressed to avoid spreading to other wires.

[0029] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A new energy vehicle charging cable, characterized by: It comprises an inner support structure (1), wherein the outer side of the inner support structure (1) is covered with a sheath structure (2); The inner support structure (1) is provided with a plurality of support ribs (11), and the plurality of support ribs (11) divide the inner cavity of the sheath structure (2) into a plurality of wiring cavities, wherein a wire (3) is passed through the wiring cavity, and a filling body (4) is provided between the wire (3) and the inner wall of the wiring cavity; A stress-sensing wire core (5) is embedded in the center of the inner support structure (1).

2. A new energy vehicle charging cable according to claim 1, characterized in that: The stress induction core (5) comprises a plurality of stress induction units, and the plurality of stress induction units are arranged at equal intervals along the central axis of the inner support structure (1).

3. A new energy vehicle charging cable according to claim 2, characterized in that: The sheath structure (2) comprises a pull-resistant layer (21) and a wear-resistant layer (22), wherein the wear-resistant layer (22) is sleeved on the outside of the pull-resistant layer (21), and the wear-resistant layer (22) comprises a plurality of reinforcement rings (221), wherein the plurality of reinforcement rings (221) are arranged at equal intervals along the axial direction of the pull-resistant layer (21).

4. A new energy vehicle charging cable according to claim 3, characterized in that: An annular groove (211) is provided on the tension-resistant layer (21) between two adjacent reinforcement rings (221).

5. A new energy vehicle charging cable according to claim 4, characterized in that: The supporting ribs (11) are arranged radially, and a plurality of the supporting ribs (11) are arranged around each other at equal angles, and an elastic supporting sheet (12) is fitted in the V-shaped groove between two adjacent supporting ribs (11).

6. A new energy vehicle charging cable according to claim 5, characterized in that: An airbag cavity (13) is provided in the supporting edge (11).

7. A new energy vehicle charging cable according to claim 6, characterized in that: The wiring cavity is a triangular cross-section cavity.

8. The new energy vehicle charging cable according to claim 7, characterized in that: The reinforcement ring (221) is provided with a plurality of pressure-bearing surfaces (222), and the plurality of pressure-bearing surfaces (222) correspond radially one-to-one to the plurality of wiring cavities.

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